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Diffstat (limited to 'lib/syntax_tools/src/erl_syntax.erl')
| -rw-r--r-- | lib/syntax_tools/src/erl_syntax.erl | 1923 |
1 files changed, 689 insertions, 1234 deletions
diff --git a/lib/syntax_tools/src/erl_syntax.erl b/lib/syntax_tools/src/erl_syntax.erl index 32fd3722d6..76a6a6dc36 100644 --- a/lib/syntax_tools/src/erl_syntax.erl +++ b/lib/syntax_tools/src/erl_syntax.erl @@ -14,10 +14,8 @@ %% Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 %% USA %% -%% $Id$ -%% %% @copyright 1997-2006 Richard Carlsson -%% @author Richard Carlsson <[email protected]> +%% @author Richard Carlsson <[email protected]> %% @end %% ===================================================================== @@ -26,23 +24,20 @@ %% This module defines an abstract data type for representing Erlang %% source code as syntax trees, in a way that is backwards compatible %% with the data structures created by the Erlang standard library -%% parser module <code>erl_parse</code> (often referred to as "parse +%% parser module `erl_parse' (often referred to as "parse %% trees", which is a bit of a misnomer). This means that all -%% <code>erl_parse</code> trees are valid abstract syntax trees, but the +%% `erl_parse' trees are valid abstract syntax trees, but the %% reverse is not true: abstract syntax trees can in general not be used -%% as input to functions expecting an <code>erl_parse</code> tree. +%% as input to functions expecting an `erl_parse' tree. %% However, as long as an abstract syntax tree represents a correct -%% Erlang program, the function <a -%% href="#revert-1"><code>revert/1</code></a> should be able to -%% transform it to the corresponding <code>erl_parse</code> +%% Erlang program, the function {@link revert/1} should be able to +%% transform it to the corresponding `erl_parse' %% representation. %% -%% A recommended starting point for the first-time user is the -%% documentation of the <a -%% href="#type-syntaxTree"><code>syntaxTree()</code></a> data type, and -%% the function <a href="#type-1"><code>type/1</code></a>. +%% A recommended starting point for the first-time user is the documentation +%% of the {@link syntaxTree()} data type, and the function {@link type/1}. %% -%% <h3><b>NOTES:</b></h3> +%% == NOTES: == %% %% This module deals with the composition and decomposition of %% <em>syntactic</em> entities (as opposed to semantic ones); its @@ -52,36 +47,31 @@ %% in general, the user is assumed to pass type-correct arguments - if %% this is not done, the effects are not defined. %% -%% With the exception of the <code>erl_parse</code> data structures, +%% With the exception of the {@link erl_parse()} data structures, %% the internal representations of abstract syntax trees are subject to %% change without notice, and should not be documented outside this %% module. Furthermore, we do not give any guarantees on how an abstract %% syntax tree may or may not be represented, <em>with the following %% exceptions</em>: no syntax tree is represented by a single atom, such -%% as <code>none</code>, by a list constructor <code>[X | Y]</code>, or -%% by the empty list <code>[]</code>. This can be relied on when writing +%% as `none', by a list constructor `[X | Y]', or +%% by the empty list `[]'. This can be relied on when writing %% functions that operate on syntax trees. -%% @type syntaxTree(). An abstract syntax tree. The -%% <code>erl_parse</code> "parse tree" representation is a subset of the -%% <code>syntaxTree()</code> representation. +%% @type syntaxTree(). An abstract syntax tree. The {@link erl_parse()} +%% "parse tree" representation is a proper subset of the `syntaxTree()' +%% representation. %% %% Every abstract syntax tree node has a <em>type</em>, given by the -%% function <a href="#type-1"><code>type/1</code></a>. Each node also -%% has associated <em>attributes</em>; see <a -%% href="#get_attrs-1"><code>get_attrs/1</code></a> for details. The -%% functions <a href="#make_tree-2"><code>make_tree/2</code></a> and <a -%% href="#subtrees-1"><code>subtrees/1</code></a> are generic +%% function {@link type/1}. Each node also has associated +%% <em>attributes</em>; see {@link get_attrs/1} for details. The functions +%% {@link make_tree/2} and {@link subtrees/1} are generic %% constructor/decomposition functions for abstract syntax trees. The -%% functions <a href="#abstract-1"><code>abstract/1</code></a> and <a -%% href="#concrete-1"><code>concrete/1</code></a> convert between +%% functions {@link abstract/1} and {@link concrete/1} convert between %% constant Erlang terms and their syntactic representations. The set of -%% syntax tree nodes is extensible through the <a -%% href="#tree-2"><code>tree/2</code></a> function. +%% syntax tree nodes is extensible through the {@link tree/2} function. %% -%% A syntax tree can be transformed to the <code>erl_parse</code> -%% representation with the <a href="#revert-1"><code>revert/1</code></a> -%% function. +%% A syntax tree can be transformed to the {@link erl_parse()} +%% representation with the {@link revert/1} function. -module(erl_syntax). @@ -309,7 +299,7 @@ data/1, is_tree/1]). --export_type([forms/0, syntaxTree/0, syntaxTreeAttributes/0]). +-export_type([forms/0, syntaxTree/0, syntaxTreeAttributes/0, padding/0]). %% ===================================================================== %% IMPLEMENTATION NOTES: @@ -390,11 +380,15 @@ -record(wrapper, {type :: atom(), attr = #attr{} :: #attr{}, - tree :: term()}). + tree :: erl_parse()}). %% ===================================================================== --type syntaxTree() :: #tree{} | #wrapper{} | tuple(). % XXX: refine +-type syntaxTree() :: #tree{} | #wrapper{} | erl_parse(). + +-type erl_parse() :: erl_parse:abstract_form() | erl_parse:abstract_expr(). +%% The representation built by the Erlang standard library parser +%% `erl_parse'. This is a subset of the {@link syntaxTree()} type. %% ===================================================================== %% @@ -404,12 +398,11 @@ %% ===================================================================== -%% @spec type(Node::syntaxTree()) -> atom() -%% -%% @doc Returns the type tag of <code>Node</code>. If <code>Node</code> +%% @doc Returns the type tag of `Node'. If `Node' %% does not represent a syntax tree, evaluation fails with reason -%% <code>badarg</code>. Node types currently defined by this module are: -%% <p><center><table border="1"> +%% `badarg'. Node types currently defined by this module are: +%% +%% <center><table border="1"> %% <tr> %% <td>application</td> %% <td>arity_qualifier</td> @@ -476,12 +469,13 @@ %% <td>variable</td> %% <td>warning_marker</td> %% </tr> -%% </table></center></p> -%% <p>The user may (for special purposes) create additional nodes -%% with other type tags, using the <code>tree/2</code> function.</p> +%% </table></center> +%% +%% The user may (for special purposes) create additional nodes +%% with other type tags, using the {@link tree/2} function. %% -%% <p>Note: The primary constructor functions for a node type should -%% always have the same name as the node type itself.</p> +%% Note: The primary constructor functions for a node type should +%% always have the same name as the node type itself. %% %% @see tree/2 %% @see application/3 @@ -606,39 +600,38 @@ type(Node) -> %% ===================================================================== -%% @spec is_leaf(Node::syntaxTree()) -> boolean() -%% -%% @doc Returns <code>true</code> if <code>Node</code> is a leaf node, -%% otherwise <code>false</code>. The currently recognised leaf node +%% @doc Returns `true' if `Node' is a leaf node, +%% otherwise `false'. The currently recognised leaf node %% types are: -%% <p><center><table border="1"> +%% +%% <center><table border="1"> %% <tr> -%% <td><code>atom</code></td> -%% <td><code>char</code></td> -%% <td><code>comment</code></td> -%% <td><code>eof_marker</code></td> -%% <td><code>error_marker</code></td> +%% <td>`atom'</td> +%% <td>`char'</td> +%% <td>`comment'</td> +%% <td>`eof_marker'</td> +%% <td>`error_marker'</td> %% </tr><tr> -%% <td><code>float</code></td> -%% <td><code>integer</code></td> -%% <td><code>nil</code></td> -%% <td><code>operator</code></td> -%% <td><code>string</code></td> +%% <td>`float'</td> +%% <td>`integer'</td> +%% <td>`nil'</td> +%% <td>`operator'</td> +%% <td>`string'</td> %% </tr><tr> -%% <td><code>text</code></td> -%% <td><code>underscore</code></td> -%% <td><code>variable</code></td> -%% <td><code>warning_marker</code></td> +%% <td>`text'</td> +%% <td>`underscore'</td> +%% <td>`variable'</td> +%% <td>`warning_marker'</td> %% </tr> -%% </table></center></p> -%% <p>A node of type <code>tuple</code> is a leaf node if and only if -%% its arity is zero.</p> +%% </table></center> %% -%% <p>Note: not all literals are leaf nodes, and vice versa. E.g., +%% A node of type `tuple' is a leaf node if and only if its arity is zero. +%% +%% Note: not all literals are leaf nodes, and vice versa. E.g., %% tuples with nonzero arity and nonempty lists may be literals, but are %% not leaf nodes. Variables, on the other hand, are leaf nodes but not -%% literals.</p> -%% +%% literals. +%% %% @see type/1 %% @see is_literal/1 @@ -666,29 +659,29 @@ is_leaf(Node) -> %% ===================================================================== -%% @spec is_form(Node::syntaxTree()) -> boolean() -%% -%% @doc Returns <code>true</code> if <code>Node</code> is a syntax tree +%% @doc Returns `true' if `Node' is a syntax tree %% representing a so-called "source code form", otherwise -%% <code>false</code>. Forms are the Erlang source code units which, +%% `false'. Forms are the Erlang source code units which, %% placed in sequence, constitute an Erlang program. Current form types %% are: -%% <p><center><table border="1"> +%% +%% <center><table border="1"> %% <tr> -%% <td><code>attribute</code></td> -%% <td><code>comment</code></td> -%% <td><code>error_marker</code></td> -%% <td><code>eof_marker</code></td> -%% <td><code>form_list</code></td> +%% <td>`attribute'</td> +%% <td>`comment'</td> +%% <td>`error_marker'</td> +%% <td>`eof_marker'</td> +%% <td>`form_list'</td> %% </tr><tr> -%% <td><code>function</code></td> -%% <td><code>rule</code></td> -%% <td><code>warning_marker</code></td> -%% <td><code>text</code></td> +%% <td>`function'</td> +%% <td>`rule'</td> +%% <td>`warning_marker'</td> +%% <td>`text'</td> %% </tr> -%% </table></center></p> +%% </table></center> +%% %% @see type/1 -%% @see attribute/2 +%% @see attribute/2 %% @see comment/2 %% @see eof_marker/0 %% @see error_marker/1 @@ -715,10 +708,8 @@ is_form(Node) -> %% ===================================================================== -%% @spec get_pos(Node::syntaxTree()) -> term() -%% %% @doc Returns the position information associated with -%% <code>Node</code>. This is usually a nonnegative integer (indicating +%% `Node'. This is usually a nonnegative integer (indicating %% the source code line number), but may be any term. By default, all %% new tree nodes have their associated position information set to the %% integer zero. @@ -750,10 +741,7 @@ get_pos(Node) -> %% ===================================================================== -%% @spec set_pos(Node::syntaxTree(), Pos::term()) -> syntaxTree() -%% -%% @doc Sets the position information of <code>Node</code> to -%% <code>Pos</code>. +%% @doc Sets the position information of `Node' to `Pos'. %% %% @see get_pos/1 %% @see copy_pos/2 @@ -774,14 +762,10 @@ set_pos(Node, Pos) -> %% ===================================================================== -%% @spec copy_pos(Source::syntaxTree(), Target::syntaxTree()) -> -%% syntaxTree() -%% -%% @doc Copies the position information from <code>Source</code> to -%% <code>Target</code>. +%% @doc Copies the position information from `Source' to `Target'. %% -%% <p>This is equivalent to <code>set_pos(Target, -%% get_pos(Source))</code>, but potentially more efficient.</p> +%% This is equivalent to `set_pos(Target, +%% get_pos(Source))', but potentially more efficient. %% %% @see get_pos/1 %% @see set_pos/2 @@ -811,24 +795,20 @@ set_com(Node, Com) -> %% ===================================================================== -%% @spec get_precomments(syntaxTree()) -> [syntaxTree()] -%% %% @doc Returns the associated pre-comments of a node. This is a %% possibly empty list of abstract comments, in top-down textual order. %% When the code is formatted, pre-comments are typically displayed %% directly above the node. For example: -%% <pre> -%% % Pre-comment of function -%% foo(X) -> {bar, X}.</pre> +%% ```% Pre-comment of function +%% foo(X) -> {bar, X}.''' %% -%% <p>If possible, the comment should be moved before any preceding +%% If possible, the comment should be moved before any preceding %% separator characters on the same line. E.g.: -%% <pre> -%% foo([X | Xs]) -> -%% % Pre-comment of 'bar(X)' node -%% [bar(X) | foo(Xs)]; -%% ...</pre> -%% (where the comment is moved before the "<code>[</code>").</p> +%% ```foo([X | Xs]) -> +%% % Pre-comment of 'bar(X)' node +%% [bar(X) | foo(Xs)]; +%% ...''' +%% (where the comment is moved before the "`['"). %% %% @see comment/2 %% @see set_precomments/2 @@ -846,11 +826,8 @@ get_precomments_1(#attr{com = #com{pre = Cs}}) -> Cs. %% ===================================================================== -%% @spec set_precomments(Node::syntaxTree(), -%% Comments::[syntaxTree()]) -> syntaxTree() -%% -%% @doc Sets the pre-comments of <code>Node</code> to -%% <code>Comments</code>. <code>Comments</code> should be a possibly +%% @doc Sets the pre-comments of `Node' to +%% `Comments'. `Comments' should be a possibly %% empty list of abstract comments, in top-down textual order. %% %% @see comment/2 @@ -880,15 +857,11 @@ set_precomments_1(#attr{com = Com} = Attr, Cs) -> %% ===================================================================== -%% @spec add_precomments(Comments::[syntaxTree()], -%% Node::syntaxTree()) -> syntaxTree() +%% @doc Appends `Comments' to the pre-comments of `Node'. %% -%% @doc Appends <code>Comments</code> to the pre-comments of -%% <code>Node</code>. -%% -%% <p>Note: This is equivalent to <code>set_precomments(Node, -%% get_precomments(Node) ++ Comments)</code>, but potentially more -%% efficient.</p> +%% Note: This is equivalent to `set_precomments(Node, +%% get_precomments(Node) ++ Comments)', but potentially more +%% efficient. %% %% @see comment/2 %% @see get_precomments/1 @@ -915,24 +888,20 @@ add_precomments_1(Cs, #attr{com = Com} = Attr) -> %% ===================================================================== -%% @spec get_postcomments(syntaxTree()) -> [syntaxTree()] -%% %% @doc Returns the associated post-comments of a node. This is a %% possibly empty list of abstract comments, in top-down textual order. %% When the code is formatted, post-comments are typically displayed to %% the right of and/or below the node. For example: -%% <pre> -%% {foo, X, Y} % Post-comment of tuple</pre> +%% ```{foo, X, Y} % Post-comment of tuple''' %% -%% <p>If possible, the comment should be moved past any following +%% If possible, the comment should be moved past any following %% separator characters on the same line, rather than placing the %% separators on the following line. E.g.: -%% <pre> -%% foo([X | Xs], Y) -> -%% foo(Xs, bar(X)); % Post-comment of 'bar(X)' node -%% ...</pre> -%% (where the comment is moved past the rightmost "<code>)</code>" and -%% the "<code>;</code>").</p> +%% ```foo([X | Xs], Y) -> +%% foo(Xs, bar(X)); % Post-comment of 'bar(X)' node +%% ...''' +%% (where the comment is moved past the rightmost "`)'" and +%% the "`;'"). %% %% @see comment/2 %% @see set_postcomments/2 @@ -950,11 +919,8 @@ get_postcomments_1(#attr{com = #com{post = Cs}}) -> Cs. %% ===================================================================== -%% @spec set_postcomments(Node::syntaxTree(), -%% Comments::[syntaxTree()]) -> syntaxTree() -%% -%% @doc Sets the post-comments of <code>Node</code> to -%% <code>Comments</code>. <code>Comments</code> should be a possibly +%% @doc Sets the post-comments of `Node' to +%% `Comments'. `Comments' should be a possibly %% empty list of abstract comments, in top-down textual order %% %% @see comment/2 @@ -984,15 +950,11 @@ set_postcomments_1(#attr{com = Com} = Attr, Cs) -> %% ===================================================================== -%% @spec add_postcomments(Comments::[syntaxTree()], -%% Node::syntaxTree()) -> syntaxTree() -%% -%% @doc Appends <code>Comments</code> to the post-comments of -%% <code>Node</code>. +%% @doc Appends `Comments' to the post-comments of `Node'. %% -%% <p>Note: This is equivalent to <code>set_postcomments(Node, -%% get_postcomments(Node) ++ Comments)</code>, but potentially more -%% efficient.</p> +%% Note: This is equivalent to `set_postcomments(Node, +%% get_postcomments(Node) ++ Comments)', but potentially more +%% efficient. %% %% @see comment/2 %% @see get_postcomments/1 @@ -1019,14 +981,12 @@ add_postcomments_1(Cs, #attr{com = Com} = Attr) -> %% ===================================================================== -%% @spec has_comments(Node::syntaxTree()) -> boolean() +%% @doc Yields `false' if the node has no associated +%% comments, and `true' otherwise. %% -%% @doc Yields <code>false</code> if the node has no associated -%% comments, and <code>true</code> otherwise. -%% -%% <p>Note: This is equivalent to <code>(get_precomments(Node) == []) -%% and (get_postcomments(Node) == [])</code>, but potentially more -%% efficient.</p> +%% Note: This is equivalent to `(get_precomments(Node) == []) +%% and (get_postcomments(Node) == [])', but potentially more +%% efficient. %% %% @see get_precomments/1 %% @see get_postcomments/1 @@ -1050,13 +1010,11 @@ has_comments(_) -> false. %% ===================================================================== -%% @spec remove_comments(Node::syntaxTree()) -> syntaxTree() -%% -%% @doc Clears the associated comments of <code>Node</code>. +%% @doc Clears the associated comments of `Node'. %% -%% <p>Note: This is equivalent to -%% <code>set_precomments(set_postcomments(Node, []), [])</code>, but -%% potentially more efficient.</p> +%% Note: This is equivalent to +%% `set_precomments(set_postcomments(Node, []), [])', but +%% potentially more efficient. %% %% @see set_precomments/2 %% @see set_postcomments/2 @@ -1075,16 +1033,12 @@ remove_comments(Node) -> %% ===================================================================== -%% @spec copy_comments(Source::syntaxTree(), Target::syntaxTree()) -> -%% syntaxTree() -%% -%% @doc Copies the pre- and postcomments from <code>Source</code> to -%% <code>Target</code>. +%% @doc Copies the pre- and postcomments from `Source' to `Target'. %% -%% <p>Note: This is equivalent to -%% <code>set_postcomments(set_precomments(Target, -%% get_precomments(Source)), get_postcomments(Source))</code>, but -%% potentially more efficient.</p> +%% Note: This is equivalent to +%% `set_postcomments(set_precomments(Target, +%% get_precomments(Source)), get_postcomments(Source))', but +%% potentially more efficient. %% %% @see comment/2 %% @see get_precomments/1 @@ -1099,16 +1053,13 @@ copy_comments(Source, Target) -> %% ===================================================================== -%% @spec join_comments(Source::syntaxTree(), Target::syntaxTree()) -> -%% syntaxTree() +%% @doc Appends the comments of `Source' to the current +%% comments of `Target'. %% -%% @doc Appends the comments of <code>Source</code> to the current -%% comments of <code>Target</code>. -%% -%% <p>Note: This is equivalent to -%% <code>add_postcomments(get_postcomments(Source), -%% add_precomments(get_precomments(Source), Target))</code>, but -%% potentially more efficient.</p> +%% Note: This is equivalent to +%% `add_postcomments(get_postcomments(Source), +%% add_precomments(get_precomments(Source), Target))', but +%% potentially more efficient. %% %% @see comment/2 %% @see get_precomments/1 @@ -1125,8 +1076,6 @@ join_comments(Source, Target) -> %% ===================================================================== -%% @spec get_ann(syntaxTree()) -> [term()] -%% %% @doc Returns the list of user annotations associated with a syntax %% tree node. For a newly created node, this is the empty list. The %% annotations may be any terms. @@ -1142,11 +1091,7 @@ get_ann(_) -> []. %% ===================================================================== -%% @spec set_ann(Node::syntaxTree(), Annotations::[term()]) -> -%% syntaxTree() -%% -%% @doc Sets the list of user annotations of <code>Node</code> to -%% <code>Annotations</code>. +%% @doc Sets the list of user annotations of `Node' to `Annotations'. %% %% @see get_ann/1 %% @see add_ann/2 @@ -1168,13 +1113,11 @@ set_ann(Node, As) -> %% ===================================================================== -%% @spec add_ann(Annotation::term(), Node::syntaxTree()) -> syntaxTree() -%% -%% @doc Appends the term <code>Annotation</code> to the list of user -%% annotations of <code>Node</code>. +%% @doc Appends the term `Annotation' to the list of user +%% annotations of `Node'. %% -%% <p>Note: this is equivalent to <code>set_ann(Node, [Annotation | -%% get_ann(Node)])</code>, but potentially more efficient.</p> +%% Note: this is equivalent to `set_ann(Node, [Annotation | +%% get_ann(Node)])', but potentially more efficient. %% %% @see get_ann/1 %% @see set_ann/2 @@ -1195,14 +1138,10 @@ add_ann(A, Node) -> %% ===================================================================== -%% @spec copy_ann(Source::syntaxTree(), Target::syntaxTree()) -> -%% syntaxTree() +%% @doc Copies the list of user annotations from `Source' to `Target'. %% -%% @doc Copies the list of user annotations from <code>Source</code> to -%% <code>Target</code>. -%% -%% <p>Note: this is equivalent to <code>set_ann(Target, -%% get_ann(Source))</code>, but potentially more efficient.</p> +%% Note: this is equivalent to `set_ann(Target, +%% get_ann(Source))', but potentially more efficient. %% %% @see get_ann/1 %% @see set_ann/2 @@ -1214,23 +1153,20 @@ copy_ann(Source, Target) -> %% ===================================================================== -%% @spec get_attrs(syntaxTree()) -> syntaxTreeAttributes() -%% %% @doc Returns a representation of the attributes associated with a %% syntax tree node. The attributes are all the extra information that %% can be attached to a node. Currently, this includes position %% information, source code comments, and user annotations. The result %% of this function cannot be inspected directly; only attached to -%% another node (cf. <code>set_attrs/2</code>). +%% another node (see {@link set_attrs/2}). %% -%% <p>For accessing individual attributes, see <code>get_pos/1</code>, -%% <code>get_ann/1</code>, <code>get_precomments/1</code> and -%% <code>get_postcomments/1</code>.</p> +%% For accessing individual attributes, see {@link get_pos/1}, +%% {@link get_ann/1}, {@link get_precomments/1} and +%% {@link get_postcomments/1}. %% %% @type syntaxTreeAttributes(). This is an abstract representation of -%% syntax tree node attributes; see the function <a -%% href="#get_attrs-1"><code>get_attrs/1</code></a>. -%% +%% syntax tree node attributes; see the function {@link get_attrs/1}. +%% %% @see set_attrs/2 %% @see get_pos/1 %% @see get_ann/1 @@ -1247,11 +1183,7 @@ get_attrs(Node) -> #attr{pos = get_pos(Node), %% ===================================================================== -%% @spec set_attrs(Node::syntaxTree(), -%% Attributes::syntaxTreeAttributes()) -> syntaxTree() -%% -%% @doc Sets the attributes of <code>Node</code> to -%% <code>Attributes</code>. +%% @doc Sets the attributes of `Node' to `Attributes'. %% %% @see get_attrs/1 %% @see copy_attrs/2 @@ -1270,14 +1202,10 @@ set_attrs(Node, Attr) -> %% ===================================================================== -%% @spec copy_attrs(Source::syntaxTree(), Target::syntaxTree()) -> -%% syntaxTree() +%% @doc Copies the attributes from `Source' to `Target'. %% -%% @doc Copies the attributes from <code>Source</code> to -%% <code>Target</code>. -%% -%% <p>Note: this is equivalent to <code>set_attrs(Target, -%% get_attrs(Source))</code>, but potentially more efficient.</p> +%% Note: this is equivalent to `set_attrs(Target, +%% get_attrs(Source))', but potentially more efficient. %% %% @see get_attrs/1 %% @see set_attrs/2 @@ -1289,7 +1217,6 @@ copy_attrs(S, T) -> %% ===================================================================== -%% @spec comment(Strings) -> syntaxTree() %% @equiv comment(none, Strings) -spec comment([string()]) -> syntaxTree(). @@ -1299,22 +1226,19 @@ comment(Strings) -> %% ===================================================================== -%% @spec comment(Padding, Strings::[string()]) -> syntaxTree() -%% Padding = none | integer() -%% %% @doc Creates an abstract comment with the given padding and text. If -%% <code>Strings</code> is a (possibly empty) list +%% `Strings' is a (possibly empty) list %% <code>["<em>Txt1</em>", ..., "<em>TxtN</em>"]</code>, the result %% represents the source code text %% <pre> -%% %<em>Txt1</em> -%% ... -%% %<em>TxtN</em></pre> -%% <code>Padding</code> states the number of empty character positions +%% %<em>Txt1</em> +%% ... +%% %<em>TxtN</em></pre> +%% `Padding' states the number of empty character positions %% to the left of the comment separating it horizontally from -%% source code on the same line (if any). If <code>Padding</code> is -%% <code>none</code>, a default positive number is used. If -%% <code>Padding</code> is an integer less than 1, there should be no +%% source code on the same line (if any). If `Padding' is +%% `none', a default positive number is used. If +%% `Padding' is an integer less than 1, there should be no %% separating space. Comments are in themselves regarded as source %% program forms. %% @@ -1338,8 +1262,6 @@ comment(Pad, Strings) -> %% ===================================================================== -%% @spec comment_text(syntaxTree()) -> [string()] -%% %% @doc Returns the lines of text of the abstract comment. %% %% @see comment/2 @@ -1351,11 +1273,8 @@ comment_text(Node) -> %% ===================================================================== -%% @spec comment_padding(syntaxTree()) -> none | integer() -%% %% @doc Returns the amount of padding before the comment, or -%% <code>none</code>. The latter means that a default padding may be -%% used. +%% `none'. The latter means that a default padding may be used. %% %% @see comment/2 @@ -1366,23 +1285,21 @@ comment_padding(Node) -> %% ===================================================================== -%% @spec form_list(Forms::[syntaxTree()]) -> syntaxTree() -%% %% @doc Creates an abstract sequence of "source code forms". If -%% <code>Forms</code> is <code>[F1, ..., Fn]</code>, where each -%% <code>Fi</code> is a form (cf. <code>is_form/1</code>, the result +%% `Forms' is `[F1, ..., Fn]', where each +%% `Fi' is a form (see {@link is_form/1}, the result %% represents %% <pre> -%% <em>F1</em> -%% ... -%% <em>Fn</em></pre> -%% where the <code>Fi</code> are separated by one or more line breaks. A -%% node of type <code>form_list</code> is itself regarded as a source -%% code form; cf. <code>flatten_form_list/1</code>. -%% -%% <p>Note: this is simply a way of grouping source code forms as a +%% <em>F1</em> +%% ... +%% <em>Fn</em></pre> +%% where the `Fi' are separated by one or more line breaks. A +%% node of type `form_list' is itself regarded as a source +%% code form; see {@link flatten_form_list/1}. +%% +%% Note: this is simply a way of grouping source code forms as a %% single syntax tree, usually in order to form an Erlang module -%% definition.</p> +%% definition. %% %% @see form_list_elements/1 %% @see is_form/1 @@ -1401,9 +1318,7 @@ form_list(Forms) -> %% ===================================================================== -%% @spec form_list_elements(syntaxTree()) -> [syntaxTree()] -%% -%% @doc Returns the list of subnodes of a <code>form_list</code> node. +%% @doc Returns the list of subnodes of a `form_list' node. %% %% @see form_list/1 @@ -1414,10 +1329,8 @@ form_list_elements(Node) -> %% ===================================================================== -%% @spec flatten_form_list(Node::syntaxTree()) -> syntaxTree() -%% -%% @doc Flattens sublists of a <code>form_list</code> node. Returns -%% <code>Node</code> with all subtrees of type <code>form_list</code> +%% @doc Flattens sublists of a `form_list' node. Returns +%% `Node' with all subtrees of type `form_list' %% recursively expanded, yielding a single "flat" abstract form %% sequence. %% @@ -1443,10 +1356,8 @@ flatten_form_list_1([], As) -> %% ===================================================================== -%% @spec text(String::string()) -> syntaxTree() -%% %% @doc Creates an abstract piece of source code text. The result -%% represents exactly the sequence of characters in <code>String</code>. +%% represents exactly the sequence of characters in `String'. %% This is useful in cases when one wants full control of the resulting %% output, e.g., for the appearance of floating-point numbers or macro %% definitions. @@ -1463,10 +1374,7 @@ text(String) -> %% ===================================================================== -%% @spec text_string(syntaxTree()) -> string() -%% -%% @doc Returns the character sequence represented by a -%% <code>text</code> node. +%% @doc Returns the character sequence represented by a `text' node. %% %% @see text/1 @@ -1477,18 +1385,15 @@ text_string(Node) -> %% ===================================================================== -%% @spec variable(Name) -> syntaxTree() -%% Name = atom() | string() -%% %% @doc Creates an abstract variable with the given name. -%% <code>Name</code> may be any atom or string that represents a +%% `Name' may be any atom or string that represents a %% lexically valid variable name, but <em>not</em> a single underscore -%% character; cf. <code>underscore/0</code>. +%% character; see {@link underscore/0}. %% -%% <p>Note: no checking is done whether the character sequence +%% Note: no checking is done whether the character sequence %% represents a proper variable name, i.e., whether or not its first %% character is an uppercase Erlang character, or whether it does not -%% contain control characters, whitespace, etc.</p> +%% contain control characters, whitespace, etc. %% %% @see variable_name/1 %% @see variable_literal/1 @@ -1517,9 +1422,7 @@ revert_variable(Node) -> %% ===================================================================== -%% @spec variable_name(syntaxTree()) -> atom() -%% -%% @doc Returns the name of a <code>variable</code> node as an atom. +%% @doc Returns the name of a `variable' node as an atom. %% %% @see variable/1 @@ -1535,9 +1438,7 @@ variable_name(Node) -> %% ===================================================================== -%% @spec variable_literal(syntaxTree()) -> string() -%% -%% @doc Returns the name of a <code>variable</code> node as a string. +%% @doc Returns the name of a `variable' node as a string. %% %% @see variable/1 @@ -1553,9 +1454,7 @@ variable_literal(Node) -> %% ===================================================================== -%% @spec underscore() -> syntaxTree() -%% -%% @doc Creates an abstract universal pattern ("<code>_</code>"). The +%% @doc Creates an abstract universal pattern ("`_'"). The %% lexical representation is a single underscore character. Note that %% this is <em>not</em> a variable, lexically speaking. %% @@ -1579,10 +1478,8 @@ revert_underscore(Node) -> %% ===================================================================== -%% @spec integer(Value::integer()) -> syntaxTree() -%% %% @doc Creates an abstract integer literal. The lexical representation -%% is the canonical decimal numeral of <code>Value</code>. +%% is the canonical decimal numeral of `Value'. %% %% @see integer_value/1 %% @see integer_literal/1 @@ -1608,11 +1505,8 @@ revert_integer(Node) -> %% ===================================================================== -%% @spec is_integer(Node::syntaxTree(), Value::integer()) -> boolean() -%% -%% @doc Returns <code>true</code> if <code>Node</code> has type -%% <code>integer</code> and represents <code>Value</code>, otherwise -%% <code>false</code>. +%% @doc Returns `true' if `Node' has type +%% `integer' and represents `Value', otherwise `false'. %% %% @see integer/1 @@ -1630,9 +1524,7 @@ is_integer(Node, Value) -> %% ===================================================================== -%% @spec integer_value(syntaxTree()) -> integer() -%% -%% @doc Returns the value represented by an <code>integer</code> node. +%% @doc Returns the value represented by an `integer' node. %% %% @see integer/1 @@ -1648,10 +1540,7 @@ integer_value(Node) -> %% ===================================================================== -%% @spec integer_literal(syntaxTree()) -> string() -%% -%% @doc Returns the numeral string represented by an -%% <code>integer</code> node. +%% @doc Returns the numeral string represented by an `integer' node. %% %% @see integer/1 @@ -1662,11 +1551,8 @@ integer_literal(Node) -> %% ===================================================================== -%% @spec float(Value::float()) -> syntaxTree() -%% %% @doc Creates an abstract floating-point literal. The lexical -%% representation is the decimal floating-point numeral of -%% <code>Value</code>. +%% representation is the decimal floating-point numeral of `Value'. %% %% @see float_value/1 %% @see float_literal/1 @@ -1701,9 +1587,7 @@ revert_float(Node) -> %% ===================================================================== -%% @spec float_value(syntaxTree()) -> float() -%% -%% @doc Returns the value represented by a <code>float</code> node. Note +%% @doc Returns the value represented by a `float' node. Note %% that floating-point values should usually not be compared for %% equality. %% @@ -1721,10 +1605,7 @@ float_value(Node) -> %% ===================================================================== -%% @spec float_literal(syntaxTree()) -> string() -%% -%% @doc Returns the numeral string represented by a <code>float</code> -%% node. +%% @doc Returns the numeral string represented by a `float' node. %% %% @see float/1 @@ -1735,17 +1616,15 @@ float_literal(Node) -> %% ===================================================================== -%% @spec char(Value::char()) -> syntaxTree() -%% %% @doc Creates an abstract character literal. The result represents -%% "<code>$<em>Name</em></code>", where <code>Name</code> corresponds to -%% <code>Value</code>. +%% "<code>$<em>Name</em></code>", where `Name' corresponds to +%% `Value'. %% -%% <p>Note: the literal corresponding to a particular character value is -%% not uniquely defined. E.g., the character "<code>a</code>" can be -%% written both as "<code>$a</code>" and "<code>$\141</code>", and a Tab -%% character can be written as "<code>$\11</code>", "<code>$\011</code>" -%% or "<code>$\t</code>".</p> +%% Note: the literal corresponding to a particular character value is +%% not uniquely defined. E.g., the character "`a'" can be +%% written both as "`$a'" and "`$\141'", and a Tab +%% character can be written as "`$\11'", "`$\011'" +%% or "`$\t'". %% %% @see char_value/1 %% @see char_literal/1 @@ -1771,11 +1650,8 @@ revert_char(Node) -> %% ===================================================================== -%% @spec is_char(Node::syntaxTree(), Value::char()) -> boolean() -%% -%% @doc Returns <code>true</code> if <code>Node</code> has type -%% <code>char</code> and represents <code>Value</code>, otherwise -%% <code>false</code>. +%% @doc Returns `true' if `Node' has type +%% `char' and represents `Value', otherwise `false'. %% %% @see char/1 @@ -1793,9 +1669,7 @@ is_char(Node, Value) -> %% ===================================================================== -%% @spec char_value(syntaxTree()) -> char() -%% -%% @doc Returns the value represented by a <code>char</code> node. +%% @doc Returns the value represented by a `char' node. %% %% @see char/1 @@ -1811,10 +1685,8 @@ char_value(Node) -> %% ===================================================================== -%% @spec char_literal(syntaxTree()) -> string() -%% -%% @doc Returns the literal string represented by a <code>char</code> -%% node. This includes the leading "<code>$</code>" character. +%% @doc Returns the literal string represented by a `char' +%% node. This includes the leading "`$'" character. %% %% @see char/1 @@ -1825,16 +1697,14 @@ char_literal(Node) -> %% ===================================================================== -%% @spec string(Value::string()) -> syntaxTree() -%% %% @doc Creates an abstract string literal. The result represents %% <code>"<em>Text</em>"</code> (including the surrounding -%% double-quotes), where <code>Text</code> corresponds to the sequence -%% of characters in <code>Value</code>, but not representing a -%% <em>specific</em> string literal. E.g., the result of -%% <code>string("x\ny")</code> represents any and all of -%% <code>"x\ny"</code>, <code>"x\12y"</code>, <code>"x\012y"</code> and -%% <code>"x\^Jy"</code>; cf. <code>char/1</code>. +%% double-quotes), where `Text' corresponds to the sequence +%% of characters in `Value', but not representing a +%% <em>specific</em> string literal. +%% +%% For example, the result of `string("x\ny")' represents any and all of +%% `"x\ny"', `"x\12y"', `"x\012y"' and `"x\^Jy"'; see {@link char/1}. %% %% @see string_value/1 %% @see string_literal/1 @@ -1861,11 +1731,8 @@ revert_string(Node) -> %% ===================================================================== -%% @spec is_string(Node::syntaxTree(), Value::string()) -> boolean() -%% -%% @doc Returns <code>true</code> if <code>Node</code> has type -%% <code>string</code> and represents <code>Value</code>, otherwise -%% <code>false</code>. +%% @doc Returns `true' if `Node' has type +%% `string' and represents `Value', otherwise `false'. %% %% @see string/1 @@ -1883,9 +1750,7 @@ is_string(Node, Value) -> %% ===================================================================== -%% @spec string_value(syntaxTree()) -> string() -%% -%% @doc Returns the value represented by a <code>string</code> node. +%% @doc Returns the value represented by a `string' node. %% %% @see string/1 @@ -1901,9 +1766,7 @@ string_value(Node) -> %% ===================================================================== -%% @spec string_literal(syntaxTree()) -> string() -%% -%% @doc Returns the literal string represented by a <code>string</code> +%% @doc Returns the literal string represented by a `string' %% node. This includes surrounding double-quote characters. %% %% @see string/1 @@ -1915,11 +1778,8 @@ string_literal(Node) -> %% ===================================================================== -%% @spec atom(Name) -> syntaxTree() -%% Name = atom() | string() -%% %% @doc Creates an abstract atom literal. The print name of the atom is -%% the character sequence represented by <code>Name</code>. +%% the character sequence represented by `Name'. %% %% @see atom_value/1 %% @see atom_name/1 @@ -1948,11 +1808,8 @@ revert_atom(Node) -> %% ===================================================================== -%% @spec is_atom(Node::syntaxTree(), Value::atom()) -> boolean() -%% -%% @doc Returns <code>true</code> if <code>Node</code> has type -%% <code>atom</code> and represents <code>Value</code>, otherwise -%% <code>false</code>. +%% @doc Returns `true' if `Node' has type +%% `atom' and represents `Value', otherwise `false'. %% %% @see atom/1 @@ -1970,9 +1827,7 @@ is_atom(Node, Value) -> %% ===================================================================== -%% @spec atom_value(syntaxTree()) -> atom() -%% -%% @doc Returns the value represented by an <code>atom</code> node. +%% @doc Returns the value represented by an `atom' node. %% %% @see atom/1 @@ -1988,9 +1843,7 @@ atom_value(Node) -> %% ===================================================================== -%% @spec atom_name(syntaxTree()) -> string() -%% -%% @doc Returns the printname of an <code>atom</code> node. +%% @doc Returns the printname of an `atom' node. %% %% @see atom/1 @@ -2001,15 +1854,12 @@ atom_name(Node) -> %% ===================================================================== -%% @spec atom_literal(syntaxTree()) -> string() -%% -%% @doc Returns the literal string represented by an <code>atom</code> +%% @doc Returns the literal string represented by an `atom' %% node. This includes surrounding single-quote characters if necessary. %% -%% <p>Note that e.g. the result of <code>atom("x\ny")</code> represents -%% any and all of <code>'x\ny'</code>, <code>'x\12y'</code>, -%% <code>'x\012y'</code> and <code>'x\^Jy\'</code>; cf. -%% <code>string/1</code>.</p> +%% Note that e.g. the result of `atom("x\ny")' represents +%% any and all of `'x\ny'', `'x\12y'', +%% `'x\012y'' and `'x\^Jy\''; see {@link string/1}. %% %% @see atom/1 %% @see string/1 @@ -2021,14 +1871,12 @@ atom_literal(Node) -> %% ===================================================================== -%% @spec tuple(Elements::[syntaxTree()]) -> syntaxTree() -%% -%% @doc Creates an abstract tuple. If <code>Elements</code> is -%% <code>[X1, ..., Xn]</code>, the result represents +%% @doc Creates an abstract tuple. If `Elements' is +%% `[X1, ..., Xn]', the result represents %% "<code>{<em>X1</em>, ..., <em>Xn</em>}</code>". %% -%% <p>Note: The Erlang language has distinct 1-tuples, i.e., -%% <code>{X}</code> is always distinct from <code>X</code> itself.</p> +%% Note: The Erlang language has distinct 1-tuples, i.e., +%% `{X}' is always distinct from `X' itself. %% %% @see tuple_elements/1 %% @see tuple_size/1 @@ -2055,10 +1903,7 @@ revert_tuple(Node) -> %% ===================================================================== -%% @spec tuple_elements(syntaxTree()) -> [syntaxTree()] -%% -%% @doc Returns the list of element subtrees of a <code>tuple</code> -%% node. +%% @doc Returns the list of element subtrees of a `tuple' node. %% %% @see tuple/1 @@ -2074,13 +1919,11 @@ tuple_elements(Node) -> %% ===================================================================== -%% @spec tuple_size(syntaxTree()) -> integer() -%% -%% @doc Returns the number of elements of a <code>tuple</code> node. +%% @doc Returns the number of elements of a `tuple' node. %% -%% <p>Note: this is equivalent to -%% <code>length(tuple_elements(Node))</code>, but potentially more -%% efficient.</p> +%% Note: this is equivalent to +%% `length(tuple_elements(Node))', but potentially more +%% efficient. %% %% @see tuple/1 %% @see tuple_elements/1 @@ -2092,7 +1935,6 @@ tuple_size(Node) -> %% ===================================================================== -%% @spec list(List) -> syntaxTree() %% @equiv list(List, none) -spec list([syntaxTree()]) -> syntaxTree(). @@ -2102,35 +1944,31 @@ list(List) -> %% ===================================================================== -%% @spec list(List, Tail) -> syntaxTree() -%% List = [syntaxTree()] -%% Tail = none | syntaxTree() -%% %% @doc Constructs an abstract list skeleton. The result has type -%% <code>list</code> or <code>nil</code>. If <code>List</code> is a -%% nonempty list <code>[E1, ..., En]</code>, the result has type -%% <code>list</code> and represents either "<code>[<em>E1</em>, ..., -%% <em>En</em>]</code>", if <code>Tail</code> is <code>none</code>, or +%% `list' or `nil'. If `List' is a +%% nonempty list `[E1, ..., En]', the result has type +%% `list' and represents either "<code>[<em>E1</em>, ..., +%% <em>En</em>]</code>", if `Tail' is `none', or %% otherwise "<code>[<em>E1</em>, ..., <em>En</em> | -%% <em>Tail</em>]</code>". If <code>List</code> is the empty list, -%% <code>Tail</code> <em>must</em> be <code>none</code>, and in that -%% case the result has type <code>nil</code> and represents -%% "<code>[]</code>" (cf. <code>nil/0</code>). +%% <em>Tail</em>]</code>". If `List' is the empty list, +%% `Tail' <em>must</em> be `none', and in that +%% case the result has type `nil' and represents +%% "`[]'" (see {@link nil/0}). %% -%% <p>The difference between lists as semantic objects (built up of +%% The difference between lists as semantic objects (built up of %% individual "cons" and "nil" terms) and the various syntactic forms %% for denoting lists may be bewildering at first. This module provides %% functions both for exact control of the syntactic representation as %% well as for the simple composition and deconstruction in terms of -%% cons and head/tail operations.</p> +%% cons and head/tail operations. %% -%% <p>Note: in <code>list(Elements, none)</code>, the "nil" list -%% terminator is implicit and has no associated information (cf. -%% <code>get_attrs/1</code>), while in the seemingly equivalent -%% <code>list(Elements, Tail)</code> when <code>Tail</code> has type -%% <code>nil</code>, the list terminator subtree <code>Tail</code> may +%% Note: in `list(Elements, none)', the "nil" list +%% terminator is implicit and has no associated information (see +%% {@link get_attrs/1}), while in the seemingly equivalent +%% `list(Elements, Tail)' when `Tail' has type +%% `nil', the list terminator subtree `Tail' may %% have attached attributes such as position, comments, and annotations, -%% which will be preserved in the result.</p> +%% which will be preserved in the result. %% %% @see nil/0 %% @see list/1 @@ -2187,10 +2025,8 @@ revert_list(Node) -> S, P). %% ===================================================================== -%% @spec nil() -> syntaxTree() -%% %% @doc Creates an abstract empty list. The result represents -%% "<code>[]</code>". The empty list is traditionally called "nil". +%% "`[]'". The empty list is traditionally called "nil". %% %% @see list/2 %% @see is_list_skeleton/1 @@ -2213,13 +2049,11 @@ revert_nil(Node) -> %% ===================================================================== -%% @spec list_prefix(Node::syntaxTree()) -> [syntaxTree()] -%% -%% @doc Returns the prefix element subtrees of a <code>list</code> node. -%% If <code>Node</code> represents "<code>[<em>E1</em>, ..., +%% @doc Returns the prefix element subtrees of a `list' node. +%% If `Node' represents "<code>[<em>E1</em>, ..., %% <em>En</em>]</code>" or "<code>[<em>E1</em>, ..., <em>En</em> | -%% <em>Tail</em>]</code>", the returned value is <code>[E1, ..., -%% En]</code>. +%% <em>Tail</em>]</code>", the returned value is `[E1, ..., +%% En]'. %% %% @see list/2 @@ -2227,28 +2061,31 @@ revert_nil(Node) -> list_prefix(Node) -> case unwrap(Node) of - {cons, _, Head, _} -> - [Head]; + {cons, _, Head, Tail} -> + [Head | cons_prefix(Tail)]; Node1 -> (data(Node1))#list.prefix end. +%% collects sequences of conses; cf. cons_suffix/1 below +cons_prefix({cons, _, Head, Tail}) -> + [Head | cons_prefix(Tail)]; +cons_prefix(_) -> + []. + %% ===================================================================== -%% @spec list_suffix(Node::syntaxTree()) -> none | syntaxTree() -%% -%% @doc Returns the suffix subtree of a <code>list</code> node, if one -%% exists. If <code>Node</code> represents "<code>[<em>E1</em>, ..., +%% @doc Returns the suffix subtree of a `list' node, if one +%% exists. If `Node' represents "<code>[<em>E1</em>, ..., %% <em>En</em> | <em>Tail</em>]</code>", the returned value is -%% <code>Tail</code>, otherwise, i.e., if <code>Node</code> represents -%% "<code>[<em>E1</em>, ..., <em>En</em>]</code>", <code>none</code> is +%% `Tail', otherwise, i.e., if `Node' represents +%% "<code>[<em>E1</em>, ..., <em>En</em>]</code>", `none' is %% returned. %% -%% <p>Note that even if this function returns some <code>Tail</code> -%% that is not <code>none</code>, the type of <code>Tail</code> can be -%% <code>nil</code>, if the tail has been given explicitly, and the list -%% skeleton has not been compacted (cf. -%% <code>compact_list/1</code>).</p> +%% Note that even if this function returns some `Tail' +%% that is not `none', the type of `Tail' can be +%% `nil', if the tail has been given explicitly, and the list +%% skeleton has not been compacted (see {@link compact_list/1}). %% %% @see list/2 %% @see nil/0 @@ -2259,34 +2096,36 @@ list_prefix(Node) -> list_suffix(Node) -> case unwrap(Node) of {cons, _, _, Tail} -> - %% If there could be comments/annotations on the tail node, - %% we should not return `none' even if it has type `nil'. - case Tail of + case cons_suffix(Tail) of {nil, _} -> - none; % no interesting information is lost - _ -> - Tail + none; + Tail1 -> + Tail1 end; Node1 -> (data(Node1))#list.suffix end. +%% skips sequences of conses; cf. cons_prefix/1 above +cons_suffix({cons, _, _, Tail}) -> + cons_suffix(Tail); +cons_suffix(Tail) -> + Tail. + %% ===================================================================== -%% @spec cons(Head::syntaxTree(), Tail::syntaxTree()) -> syntaxTree() -%% %% @doc "Optimising" list skeleton cons operation. Creates an abstract -%% list skeleton whose first element is <code>Head</code> and whose tail -%% corresponds to <code>Tail</code>. This is similar to -%% <code>list([Head], Tail)</code>, except that <code>Tail</code> may -%% not be <code>none</code>, and that the result does not necessarily +%% list skeleton whose first element is `Head' and whose tail +%% corresponds to `Tail'. This is similar to +%% `list([Head], Tail)', except that `Tail' may +%% not be `none', and that the result does not necessarily %% represent exactly "<code>[<em>Head</em> | <em>Tail</em>]</code>", but -%% may depend on the <code>Tail</code> subtree. E.g., if -%% <code>Tail</code> represents <code>[X, Y]</code>, the result may +%% may depend on the `Tail' subtree. E.g., if +%% `Tail' represents `[X, Y]', the result may %% represent "<code>[<em>Head</em>, X, Y]</code>", rather than %% "<code>[<em>Head</em> | [X, Y]]</code>". Annotations on -%% <code>Tail</code> itself may be lost if <code>Tail</code> represents -%% a list skeleton, but comments on <code>Tail</code> are propagated to +%% `Tail' itself may be lost if `Tail' represents +%% a list skeleton, but comments on `Tail' are propagated to %% the result. %% %% @see list/2 @@ -2308,10 +2147,8 @@ cons(Head, Tail) -> %% ===================================================================== -%% @spec list_head(Node::syntaxTree()) -> syntaxTree() -%% -%% @doc Returns the head element subtree of a <code>list</code> node. If -%% <code>Node</code> represents "<code>[<em>Head</em> ...]</code>", the +%% @doc Returns the head element subtree of a `list' node. If +%% `Node' represents "<code>[<em>Head</em> ...]</code>", the %% result will represent "<code><em>Head</em></code>". %% %% @see list/2 @@ -2325,15 +2162,13 @@ list_head(Node) -> %% ===================================================================== -%% @spec list_tail(Node::syntaxTree()) -> syntaxTree() -%% -%% @doc Returns the tail of a <code>list</code> node. If -%% <code>Node</code> represents a single-element list +%% @doc Returns the tail of a `list' node. If +%% `Node' represents a single-element list %% "<code>[<em>E</em>]</code>", then the result has type -%% <code>nil</code>, representing "<code>[]</code>". If -%% <code>Node</code> represents "<code>[<em>E1</em>, <em>E2</em> +%% `nil', representing "`[]'". If +%% `Node' represents "<code>[<em>E1</em>, <em>E2</em> %% ...]</code>", the result will represent "<code>[<em>E2</em> -%% ...]</code>", and if <code>Node</code> represents +%% ...]</code>", and if `Node' represents %% "<code>[<em>Head</em> | <em>Tail</em>]</code>", the result will %% represent "<code><em>Tail</em></code>". %% @@ -2358,10 +2193,8 @@ list_tail(Node) -> %% ===================================================================== -%% @spec is_list_skeleton(syntaxTree()) -> boolean() -%% -%% @doc Returns <code>true</code> if <code>Node</code> has type -%% <code>list</code> or <code>nil</code>, otherwise <code>false</code>. +%% @doc Returns `true' if `Node' has type +%% `list' or `nil', otherwise `false'. %% %% @see list/2 %% @see nil/0 @@ -2377,24 +2210,22 @@ is_list_skeleton(Node) -> %% ===================================================================== -%% @spec is_proper_list(Node::syntaxTree()) -> boolean() -%% -%% @doc Returns <code>true</code> if <code>Node</code> represents a -%% proper list, and <code>false</code> otherwise. A proper list is a -%% list skeleton either on the form "<code>[]</code>" or +%% @doc Returns `true' if `Node' represents a +%% proper list, and `false' otherwise. A proper list is a +%% list skeleton either on the form "`[]'" or %% "<code>[<em>E1</em>, ..., <em>En</em>]</code>", or "<code>[... | -%% <em>Tail</em>]</code>" where recursively <code>Tail</code> also +%% <em>Tail</em>]</code>" where recursively `Tail' also %% represents a proper list. %% -%% <p>Note: Since <code>Node</code> is a syntax tree, the actual +%% Note: Since `Node' is a syntax tree, the actual %% run-time values corresponding to its subtrees may often be partially -%% or completely unknown. Thus, if <code>Node</code> represents e.g. -%% "<code>[... | Ns]</code>" (where <code>Ns</code> is a variable), then -%% the function will return <code>false</code>, because it is not known -%% whether <code>Ns</code> will be bound to a list at run-time. If -%% <code>Node</code> instead represents e.g. "<code>[1, 2, 3]</code>" or -%% "<code>[A | []]</code>", then the function will return -%% <code>true</code>.</p> +%% or completely unknown. Thus, if `Node' represents e.g. +%% "`[... | Ns]'" (where `Ns' is a variable), then +%% the function will return `false', because it is not known +%% whether `Ns' will be bound to a list at run-time. If +%% `Node' instead represents e.g. "`[1, 2, 3]'" or +%% "`[A | []]'", then the function will return +%% `true'. %% %% @see list/2 @@ -2417,14 +2248,11 @@ is_proper_list(Node) -> %% ===================================================================== -%% @spec list_elements(Node::syntaxTree()) -> [syntaxTree()] -%% %% @doc Returns the list of element subtrees of a list skeleton. -%% <code>Node</code> must represent a proper list. E.g., if -%% <code>Node</code> represents "<code>[<em>X1</em>, <em>X2</em> | +%% `Node' must represent a proper list. E.g., if +%% `Node' represents "<code>[<em>X1</em>, <em>X2</em> | %% [<em>X3</em>, <em>X4</em> | []]</code>", then -%% <code>list_elements(Node)</code> yields the list <code>[X1, X2, X3, -%% X4]</code>. +%% `list_elements(Node)' yields the list `[X1, X2, X3, X4]'. %% %% @see list/2 %% @see is_proper_list/1 @@ -2450,17 +2278,15 @@ list_elements(Node, As) -> %% ===================================================================== -%% @spec list_length(Node::syntaxTree()) -> integer() -%% %% @doc Returns the number of element subtrees of a list skeleton. -%% <code>Node</code> must represent a proper list. E.g., if -%% <code>Node</code> represents "<code>[X1 | [X2, X3 | [X4, X5, -%% X6]]]</code>", then <code>list_length(Node)</code> returns the +%% `Node' must represent a proper list. E.g., if +%% `Node' represents "`[X1 | [X2, X3 | [X4, X5, +%% X6]]]'", then `list_length(Node)' returns the %% integer 6. %% -%% <p>Note: this is equivalent to -%% <code>length(list_elements(Node))</code>, but potentially more -%% efficient.</p> +%% Note: this is equivalent to +%% `length(list_elements(Node))', but potentially more +%% efficient. %% %% @see list/2 %% @see is_proper_list/1 @@ -2487,18 +2313,16 @@ list_length(Node, A) -> %% ===================================================================== -%% @spec normalize_list(Node::syntaxTree()) -> syntaxTree() -%% %% @doc Expands an abstract list skeleton to its most explicit form. If -%% <code>Node</code> represents "<code>[<em>E1</em>, ..., <em>En</em> | +%% `Node' represents "<code>[<em>E1</em>, ..., <em>En</em> | %% <em>Tail</em>]</code>", the result represents "<code>[<em>E1</em> | %% ... [<em>En</em> | <em>Tail1</em>] ... ]</code>", where -%% <code>Tail1</code> is the result of -%% <code>normalize_list(Tail)</code>. If <code>Node</code> represents +%% `Tail1' is the result of +%% `normalize_list(Tail)'. If `Node' represents %% "<code>[<em>E1</em>, ..., <em>En</em>]</code>", the result simply %% represents "<code>[<em>E1</em> | ... [<em>En</em> | []] ... -%% ]</code>". If <code>Node</code> does not represent a list skeleton, -%% <code>Node</code> itself is returned. +%% ]</code>". If `Node' does not represent a list skeleton, +%% `Node' itself is returned. %% %% @see list/2 %% @see compact_list/1 @@ -2528,16 +2352,14 @@ normalize_list_1(Es, Tail) -> %% ===================================================================== -%% @spec compact_list(Node::syntaxTree()) -> syntaxTree() -%% %% @doc Yields the most compact form for an abstract list skeleton. The %% result either represents "<code>[<em>E1</em>, ..., <em>En</em> | -%% <em>Tail</em>]</code>", where <code>Tail</code> is not a list +%% <em>Tail</em>]</code>", where `Tail' is not a list %% skeleton, or otherwise simply "<code>[<em>E1</em>, ..., -%% <em>En</em>]</code>". Annotations on subtrees of <code>Node</code> +%% <em>En</em>]</code>". Annotations on subtrees of `Node' %% that represent list skeletons may be lost, but comments will be -%% propagated to the result. Returns <code>Node</code> itself if -%% <code>Node</code> does not represent a list skeleton. +%% propagated to the result. Returns `Node' itself if +%% `Node' does not represent a list skeleton. %% %% @see list/2 %% @see normalize_list/1 @@ -2575,10 +2397,8 @@ compact_list(Node) -> %% ===================================================================== -%% @spec binary(Fields::[syntaxTree()]) -> syntaxTree() -%% %% @doc Creates an abstract binary-object template. If -%% <code>Fields</code> is <code>[F1, ..., Fn]</code>, the result +%% `Fields' is `[F1, ..., Fn]', the result %% represents "<code><<<em>F1</em>, ..., %% <em>Fn</em>>></code>". %% @@ -2611,10 +2431,7 @@ revert_binary(Node) -> %% ===================================================================== -%% @spec binary_fields(syntaxTree()) -> [syntaxTree()] -%% -%% @doc Returns the list of field subtrees of a <code>binary</code> -%% node. +%% @doc Returns the list of field subtrees of a `binary' node. %% %% @see binary/1 %% @see binary_field/2 @@ -2631,7 +2448,6 @@ binary_fields(Node) -> %% ===================================================================== -%% @spec binary_field(Body) -> syntaxTree() %% @equiv binary_field(Body, []) -spec binary_field(syntaxTree()) -> syntaxTree(). @@ -2641,15 +2457,11 @@ binary_field(Body) -> %% ===================================================================== -%% @spec binary_field(Body::syntaxTree(), Size, -%% Types::[syntaxTree()]) -> syntaxTree() -%% Size = none | syntaxTree() -%% %% @doc Creates an abstract binary template field. -%% If <code>Size</code> is <code>none</code>, this is equivalent to -%% "<code>binary_field(Body, Types)</code>", otherwise it is -%% equivalent to "<code>binary_field(size_qualifier(Body, Size), -%% Types)</code>". +%% If `Size' is `none', this is equivalent to +%% "`binary_field(Body, Types)'", otherwise it is +%% equivalent to "`binary_field(size_qualifier(Body, Size), +%% Types)'". %% %% (This is a utility function.) %% @@ -2667,13 +2479,10 @@ binary_field(Body, Size, Types) -> %% ===================================================================== -%% @spec binary_field(Body::syntaxTree(), Types::[syntaxTree()]) -> -%% syntaxTree() -%% %% @doc Creates an abstract binary template field. If -%% <code>Types</code> is the empty list, the result simply represents -%% "<code><em>Body</em></code>", otherwise, if <code>Types</code> is -%% <code>[T1, ..., Tn]</code>, the result represents +%% `Types' is the empty list, the result simply represents +%% "<code><em>Body</em></code>", otherwise, if `Types' is +%% `[T1, ..., Tn]', the result represents %% "<code><em>Body</em>/<em>T1</em>-...-<em>Tn</em></code>". %% %% @see binary/1 @@ -2727,9 +2536,7 @@ revert_binary_field(Node) -> %% ===================================================================== -%% @spec binary_field_body(syntaxTree()) -> syntaxTree() -%% -%% @doc Returns the body subtree of a <code>binary_field</code>. +%% @doc Returns the body subtree of a `binary_field'. %% %% @see binary_field/2 @@ -2749,12 +2556,10 @@ binary_field_body(Node) -> %% ===================================================================== -%% @spec binary_field_types(Node::syntaxTree()) -> [syntaxTree()] -%% %% @doc Returns the list of type-specifier subtrees of a -%% <code>binary_field</code> node. If <code>Node</code> represents +%% `binary_field' node. If `Node' represents %% "<code>.../<em>T1</em>, ..., <em>Tn</em></code>", the result is -%% <code>[T1, ..., Tn]</code>, otherwise the result is the empty list. +%% `[T1, ..., Tn]', otherwise the result is the empty list. %% %% @see binary_field/2 @@ -2774,14 +2579,12 @@ binary_field_types(Node) -> %% ===================================================================== -%% @spec binary_field_size(Node::syntaxTree()) -> none | syntaxTree() -%% %% @doc Returns the size specifier subtree of a -%% <code>binary_field</code> node, if any. If <code>Node</code> +%% `binary_field' node, if any. If `Node' %% represents "<code><em>Body</em>:<em>Size</em></code>" or %% "<code><em>Body</em>:<em>Size</em>/<em>T1</em>, ..., -%% <em>Tn</em></code>", the result is <code>Size</code>, otherwise -%% <code>none</code> is returned. +%% <em>Tn</em></code>", the result is `Size', otherwise +%% `none' is returned. %% %% (This is a utility function.) %% @@ -2810,9 +2613,6 @@ binary_field_size(Node) -> %% ===================================================================== -%% @spec size_qualifier(Body::syntaxTree(), Size::syntaxTree()) -> -%% syntaxTree() -%% %% @doc Creates an abstract size qualifier. The result represents %% "<code><em>Body</em>:<em>Size</em></code>". %% @@ -2834,10 +2634,7 @@ size_qualifier(Body, Size) -> %% ===================================================================== -%% @spec size_qualifier_body(syntaxTree()) -> syntaxTree() -%% -%% @doc Returns the body subtree of a <code>size_qualifier</code> -%% node. +%% @doc Returns the body subtree of a `size_qualifier' node. %% %% @see size_qualifier/2 @@ -2848,10 +2645,8 @@ size_qualifier_body(Node) -> %% ===================================================================== -%% @spec size_qualifier_argument(syntaxTree()) -> syntaxTree() -%% %% @doc Returns the argument subtree (the size) of a -%% <code>size_qualifier</code> node. +%% `size_qualifier' node. %% %% @see size_qualifier/2 @@ -2862,16 +2657,14 @@ size_qualifier_argument(Node) -> %% ===================================================================== -%% @spec error_marker(Error::term()) -> syntaxTree() -%% %% @doc Creates an abstract error marker. The result represents an %% occurrence of an error in the source code, with an associated Erlang -%% I/O ErrorInfo structure given by <code>Error</code> (see module +%% I/O ErrorInfo structure given by `Error' (see module %% {@link //stdlib/io} for details). Error markers are regarded as source %% code forms, but have no defined lexical form. %% -%% <p>Note: this is supported only for backwards compatibility with -%% existing parsers and tools.</p> +%% Note: this is supported only for backwards compatibility with +%% existing parsers and tools. %% %% @see error_marker_info/1 %% @see warning_marker/1 @@ -2902,10 +2695,7 @@ revert_error_marker(Node) -> %% ===================================================================== -%% @spec error_marker_info(syntaxTree()) -> term() -%% -%% @doc Returns the ErrorInfo structure of an <code>error_marker</code> -%% node. +%% @doc Returns the ErrorInfo structure of an `error_marker' node. %% %% @see error_marker/1 @@ -2921,16 +2711,14 @@ error_marker_info(Node) -> %% ===================================================================== -%% @spec warning_marker(Error::term()) -> syntaxTree() -%% %% @doc Creates an abstract warning marker. The result represents an %% occurrence of a possible problem in the source code, with an -%% associated Erlang I/O ErrorInfo structure given by <code>Error</code> +%% associated Erlang I/O ErrorInfo structure given by `Error' %% (see module {@link //stdlib/io} for details). Warning markers are %% regarded as source code forms, but have no defined lexical form. %% -%% <p>Note: this is supported only for backwards compatibility with -%% existing parsers and tools.</p> +%% Note: this is supported only for backwards compatibility with +%% existing parsers and tools. %% %% @see warning_marker_info/1 %% @see error_marker/1 @@ -2961,10 +2749,7 @@ revert_warning_marker(Node) -> %% ===================================================================== -%% @spec warning_marker_info(syntaxTree()) -> term() -%% -%% @doc Returns the ErrorInfo structure of a <code>warning_marker</code> -%% node. +%% @doc Returns the ErrorInfo structure of a `warning_marker' node. %% %% @see warning_marker/1 @@ -2980,16 +2765,14 @@ warning_marker_info(Node) -> %% ===================================================================== -%% @spec eof_marker() -> syntaxTree() -%% %% @doc Creates an abstract end-of-file marker. This represents the %% end of input when reading a sequence of source code forms. An %% end-of-file marker is itself regarded as a source code form %% (namely, the last in any sequence in which it occurs). It has no %% defined lexical form. %% -%% <p>Note: this is retained only for backwards compatibility with -%% existing parsers and tools.</p> +%% Note: this is retained only for backwards compatibility with +%% existing parsers and tools. %% %% @see error_marker/1 %% @see warning_marker/1 @@ -3013,7 +2796,6 @@ revert_eof_marker(Node) -> %% ===================================================================== -%% @spec attribute(Name) -> syntaxTree() %% @equiv attribute(Name, none) -spec attribute(syntaxTree()) -> syntaxTree(). @@ -3023,23 +2805,20 @@ attribute(Name) -> %% ===================================================================== -%% @spec attribute(Name::syntaxTree(), Arguments) -> syntaxTree() -%% Arguments = none | [syntaxTree()] -%% %% @doc Creates an abstract program attribute. If -%% <code>Arguments</code> is <code>[A1, ..., An]</code>, the result +%% `Arguments' is `[A1, ..., An]', the result %% represents "<code>-<em>Name</em>(<em>A1</em>, ..., -%% <em>An</em>).</code>". Otherwise, if <code>Arguments</code> is -%% <code>none</code>, the result represents +%% <em>An</em>).</code>". Otherwise, if `Arguments' is +%% `none', the result represents %% "<code>-<em>Name</em>.</code>". The latter form makes it possible %% to represent preprocessor directives such as -%% "<code>-endif.</code>". Attributes are source code forms. +%% "`-endif.'". Attributes are source code forms. %% -%% <p>Note: The preprocessor macro definition directive +%% Note: The preprocessor macro definition directive %% "<code>-define(<em>Name</em>, <em>Body</em>).</code>" has relatively -%% few requirements on the syntactical form of <code>Body</code> (viewed -%% as a sequence of tokens). The <code>text</code> node type can be used -%% for a <code>Body</code> that is not a normal Erlang construct.</p> +%% few requirements on the syntactical form of `Body' (viewed +%% as a sequence of tokens). The `text' node type can be used +%% for a `Body' that is not a normal Erlang construct. %% %% @see attribute/1 %% @see attribute_name/1 @@ -3233,9 +3012,7 @@ revert_module_name(A) -> %% ===================================================================== -%% @spec attribute_name(syntaxTree()) -> syntaxTree() -%% -%% @doc Returns the name subtree of an <code>attribute</code> node. +%% @doc Returns the name subtree of an `attribute' node. %% %% @see attribute/1 @@ -3251,15 +3028,12 @@ attribute_name(Node) -> %% ===================================================================== -%% @spec attribute_arguments(Node::syntaxTree()) -> -%% none | [syntaxTree()] -%% %% @doc Returns the list of argument subtrees of an -%% <code>attribute</code> node, if any. If <code>Node</code> +%% `attribute' node, if any. If `Node' %% represents "<code>-<em>Name</em>.</code>", the result is -%% <code>none</code>. Otherwise, if <code>Node</code> represents +%% `none'. Otherwise, if `Node' represents %% "<code>-<em>Name</em>(<em>E1</em>, ..., <em>En</em>).</code>", -%% <code>[E1, ..., E1]</code> is returned. +%% `[E1, ..., E1]' is returned. %% %% @see attribute/1 @@ -3326,9 +3100,6 @@ attribute_arguments(Node) -> %% ===================================================================== -%% @spec arity_qualifier(Body::syntaxTree(), Arity::syntaxTree()) -> -%% syntaxTree() -%% %% @doc Creates an abstract arity qualifier. The result represents %% "<code><em>Body</em>/<em>Arity</em></code>". %% @@ -3350,10 +3121,7 @@ arity_qualifier(Body, Arity) -> %% ===================================================================== -%% @spec arity_qualifier_body(syntaxTree()) -> syntaxTree() -%% -%% @doc Returns the body subtree of an <code>arity_qualifier</code> -%% node. +%% @doc Returns the body subtree of an `arity_qualifier' node. %% %% @see arity_qualifier/2 @@ -3364,10 +3132,8 @@ arity_qualifier_body(Node) -> %% ===================================================================== -%% @spec arity_qualifier_argument(syntaxTree()) -> syntaxTree() -%% %% @doc Returns the argument (the arity) subtree of an -%% <code>arity_qualifier</code> node. +%% `arity_qualifier' node. %% %% @see arity_qualifier/2 @@ -3378,9 +3144,6 @@ arity_qualifier_argument(Node) -> %% ===================================================================== -%% @spec module_qualifier(Module::syntaxTree(), Body::syntaxTree()) -> -%% syntaxTree() -%% %% @doc Creates an abstract module qualifier. The result represents %% "<code><em>Module</em>:<em>Body</em></code>". %% @@ -3414,10 +3177,8 @@ revert_module_qualifier(Node) -> %% ===================================================================== -%% @spec module_qualifier_argument(syntaxTree()) -> syntaxTree() -%% %% @doc Returns the argument (the module) subtree of a -%% <code>module_qualifier</code> node. +%% `module_qualifier' node. %% %% @see module_qualifier/2 @@ -3433,10 +3194,7 @@ module_qualifier_argument(Node) -> %% ===================================================================== -%% @spec module_qualifier_body(syntaxTree()) -> syntaxTree() -%% -%% @doc Returns the body subtree of a <code>module_qualifier</code> -%% node. +%% @doc Returns the body subtree of a `module_qualifier' node. %% %% @see module_qualifier/2 @@ -3452,11 +3210,9 @@ module_qualifier_body(Node) -> %% ===================================================================== -%% @spec qualified_name(Segments::[syntaxTree()]) -> syntaxTree() -%% %% @doc Creates an abstract qualified name. The result represents %% "<code><em>S1</em>.<em>S2</em>. ... .<em>Sn</em></code>", if -%% <code>Segments</code> is <code>[S1, S2, ..., Sn]</code>. +%% `Segments' is `[S1, S2, ..., Sn]'. %% %% @see qualified_name_segments/1 @@ -3484,10 +3240,8 @@ revert_qualified_name(Node) -> %% ===================================================================== -%% @spec qualified_name_segments(syntaxTree()) -> [syntaxTree()] -%% %% @doc Returns the list of name segments of a -%% <code>qualified_name</code> node. +%% `qualified_name' node. %% %% @see qualified_name/1 @@ -3503,13 +3257,10 @@ qualified_name_segments(Node) -> %% ===================================================================== -%% @spec function(Name::syntaxTree(), Clauses::[syntaxTree()]) -> -%% syntaxTree() -%% -%% @doc Creates an abstract function definition. If <code>Clauses</code> -%% is <code>[C1, ..., Cn]</code>, the result represents +%% @doc Creates an abstract function definition. If `Clauses' +%% is `[C1, ..., Cn]', the result represents %% "<code><em>Name</em> <em>C1</em>; ...; <em>Name</em> -%% <em>Cn</em>.</code>". More exactly, if each <code>Ci</code> +%% <em>Cn</em>.</code>". More exactly, if each `Ci' %% represents "<code>(<em>Pi1</em>, ..., <em>Pim</em>) <em>Gi</em> -> %% <em>Bi</em></code>", then the result represents %% "<code><em>Name</em>(<em>P11</em>, ..., <em>P1m</em>) <em>G1</em> -> @@ -3523,13 +3274,12 @@ qualified_name_segments(Node) -> %% @see is_form/1 %% @see rule/2 --record(function, {name, clauses}). -%% XXX: This one is problematic because there is a tuple with the same -%% tag and size that comes from 'erl_parse' -%% -record(function, {name :: syntaxTree(), clauses :: [syntaxTree()]}). +%% Don't use the name 'function' for this record, to avoid confusion with +%% the tuples on the form {function,Name,Arity} used by erl_parse. +-record(func, {name :: syntaxTree(), clauses :: [syntaxTree()]}). %% type(Node) = function -%% data(Node) = #function{name :: Name, clauses :: Clauses} +%% data(Node) = #func{name :: Name, clauses :: Clauses} %% %% Name = syntaxTree() %% Clauses = [syntaxTree()] @@ -3556,7 +3306,7 @@ qualified_name_segments(Node) -> -spec function(syntaxTree(), [syntaxTree()]) -> syntaxTree(). function(Name, Clauses) -> - tree(function, #function{name = Name, clauses = Clauses}). + tree(function, #func{name = Name, clauses = Clauses}). revert_function(Node) -> Name = function_name(Node), @@ -3572,9 +3322,7 @@ revert_function(Node) -> %% ===================================================================== -%% @spec function_name(syntaxTree()) -> syntaxTree() -%% -%% @doc Returns the name subtree of a <code>function</code> node. +%% @doc Returns the name subtree of a `function' node. %% %% @see function/2 @@ -3585,15 +3333,12 @@ function_name(Node) -> {function, Pos, Name, _, _} -> set_pos(atom(Name), Pos); Node1 -> - (data(Node1))#function.name + (data(Node1))#func.name end. %% ===================================================================== -%% @spec function_clauses(syntaxTree()) -> [syntaxTree()] -%% -%% @doc Returns the list of clause subtrees of a <code>function</code> -%% node. +%% @doc Returns the list of clause subtrees of a `function' node. %% %% @see function/2 @@ -3604,21 +3349,19 @@ function_clauses(Node) -> {function, _, _, _, Clauses} -> Clauses; Node1 -> - (data(Node1))#function.clauses + (data(Node1))#func.clauses end. %% ===================================================================== -%% @spec function_arity(Node::syntaxTree()) -> integer() -%% -%% @doc Returns the arity of a <code>function</code> node. The result +%% @doc Returns the arity of a `function' node. The result %% is the number of parameter patterns in the first clause of the %% function; subsequent clauses are ignored. %% -%% <p>An exception is thrown if <code>function_clauses(Node)</code> +%% An exception is thrown if `function_clauses(Node)' %% returns an empty list, or if the first element of that list is not -%% a syntax tree <code>C</code> of type <code>clause</code> such that -%% <code>clause_patterns(C)</code> is a nonempty list.</p> +%% a syntax tree `C' of type `clause' such that +%% `clause_patterns(C)' is a nonempty list. %% %% @see function/2 %% @see function_clauses/1 @@ -3634,7 +3377,6 @@ function_arity(Node) -> %% ===================================================================== -%% @spec clause(Guard, Body) -> syntaxTree() %% @equiv clause([], Guard, Body) -type guard() :: 'none' | syntaxTree() | [syntaxTree()] | [[syntaxTree()]]. @@ -3646,34 +3388,28 @@ clause(Guard, Body) -> %% ===================================================================== -%% @spec clause(Patterns::[syntaxTree()], Guard, -%% Body::[syntaxTree()]) -> syntaxTree() -%% Guard = none | syntaxTree() -%% | [syntaxTree()] | [[syntaxTree()]] -%% -%% @doc Creates an abstract clause. If <code>Patterns</code> is -%% <code>[P1, ..., Pn]</code> and <code>Body</code> is <code>[B1, ..., -%% Bm]</code>, then if <code>Guard</code> is <code>none</code>, the +%% @doc Creates an abstract clause. If `Patterns' is +%% `[P1, ..., Pn]' and `Body' is `[B1, ..., +%% Bm]', then if `Guard' is `none', the %% result represents "<code>(<em>P1</em>, ..., <em>Pn</em>) -> %% <em>B1</em>, ..., <em>Bm</em></code>", otherwise, unless -%% <code>Guard</code> is a list, the result represents +%% `Guard' is a list, the result represents %% "<code>(<em>P1</em>, ..., <em>Pn</em>) when <em>Guard</em> -> %% <em>B1</em>, ..., <em>Bm</em></code>". %% -%% <p>For simplicity, the <code>Guard</code> argument may also be any +%% For simplicity, the `Guard' argument may also be any %% of the following: %% <ul> -%% <li>An empty list <code>[]</code>. This is equivalent to passing -%% <code>none</code>.</li> -%% <li>A nonempty list <code>[E1, ..., Ej]</code> of syntax trees. -%% This is equivalent to passing <code>conjunction([E1, ..., -%% Ej])</code>.</li> -%% <li>A nonempty list of lists of syntax trees <code>[[E1_1, ..., -%% E1_k1], ..., [Ej_1, ..., Ej_kj]]</code>, which is equivalent -%% to passing <code>disjunction([conjunction([E1_1, ..., -%% E1_k1]), ..., conjunction([Ej_1, ..., Ej_kj])])</code>.</li> +%% <li>An empty list `[]'. This is equivalent to passing +%% `none'.</li> +%% <li>A nonempty list `[E1, ..., Ej]' of syntax trees. +%% This is equivalent to passing `conjunction([E1, ..., +%% Ej])'.</li> +%% <li>A nonempty list of lists of syntax trees `[[E1_1, ..., +%% E1_k1], ..., [Ej_1, ..., Ej_kj]]', which is equivalent +%% to passing `disjunction([conjunction([E1_1, ..., +%% E1_k1]), ..., conjunction([Ej_1, ..., Ej_kj])])'.</li> %% </ul> -%% </p> %% %% @see clause/2 %% @see clause_patterns/1 @@ -3789,10 +3525,7 @@ unfold_try_clause({clause, Pos, [{tuple, _, [C, V, _]}], %% ===================================================================== -%% @spec clause_patterns(syntaxTree()) -> [syntaxTree()] -%% -%% @doc Returns the list of pattern subtrees of a <code>clause</code> -%% node. +%% @doc Returns the list of pattern subtrees of a `clause' node. %% %% @see clause/3 @@ -3808,13 +3541,11 @@ clause_patterns(Node) -> %% ===================================================================== -%% @spec clause_guard(Node::syntaxTree()) -> none | syntaxTree() -%% -%% @doc Returns the guard subtree of a <code>clause</code> node, if -%% any. If <code>Node</code> represents "<code>(<em>P1</em>, ..., +%% @doc Returns the guard subtree of a `clause' node, if +%% any. If `Node' represents "<code>(<em>P1</em>, ..., %% <em>Pn</em>) when <em>Guard</em> -> <em>B1</em>, ..., -%% <em>Bm</em></code>", <code>Guard</code> is returned. Otherwise, the -%% result is <code>none</code>. +%% <em>Bm</em></code>", `Guard' is returned. Otherwise, the +%% result is `none'. %% %% @see clause/3 @@ -3836,10 +3567,7 @@ clause_guard(Node) -> %% ===================================================================== -%% @spec clause_body(syntaxTree()) -> [syntaxTree()] -%% -%% @doc Return the list of body subtrees of a <code>clause</code> -%% node. +%% @doc Return the list of body subtrees of a `clause' node. %% %% @see clause/3 @@ -3855,10 +3583,8 @@ clause_body(Node) -> %% ===================================================================== -%% @spec disjunction(List::[syntaxTree()]) -> syntaxTree() -%% -%% @doc Creates an abstract disjunction. If <code>List</code> is -%% <code>[E1, ..., En]</code>, the result represents +%% @doc Creates an abstract disjunction. If `List' is +%% `[E1, ..., En]', the result represents %% "<code><em>E1</em>; ...; <em>En</em></code>". %% %% @see disjunction_body/1 @@ -3874,10 +3600,8 @@ disjunction(Tests) -> %% ===================================================================== -%% @spec disjunction_body(syntaxTree()) -> [syntaxTree()] -%% %% @doc Returns the list of body subtrees of a -%% <code>disjunction</code> node. +%% `disjunction' node. %% %% @see disjunction/1 @@ -3888,10 +3612,8 @@ disjunction_body(Node) -> %% ===================================================================== -%% @spec conjunction(List::[syntaxTree()]) -> syntaxTree() -%% -%% @doc Creates an abstract conjunction. If <code>List</code> is -%% <code>[E1, ..., En]</code>, the result represents +%% @doc Creates an abstract conjunction. If `List' is +%% `[E1, ..., En]', the result represents %% "<code><em>E1</em>, ..., <em>En</em></code>". %% %% @see conjunction_body/1 @@ -3907,10 +3629,8 @@ conjunction(Tests) -> %% ===================================================================== -%% @spec conjunction_body(syntaxTree()) -> [syntaxTree()] -%% %% @doc Returns the list of body subtrees of a -%% <code>conjunction</code> node. +%% `conjunction' node. %% %% @see conjunction/1 @@ -3921,8 +3641,6 @@ conjunction_body(Node) -> %% ===================================================================== -%% @spec catch_expr(Expr::syntaxTree()) -> syntaxTree() -%% %% @doc Creates an abstract catch-expression. The result represents %% "<code>catch <em>Expr</em></code>". %% @@ -3949,9 +3667,7 @@ revert_catch_expr(Node) -> %% ===================================================================== -%% @spec catch_expr_body(syntaxTree()) -> syntaxTree() -%% -%% @doc Returns the body subtree of a <code>catch_expr</code> node. +%% @doc Returns the body subtree of a `catch_expr' node. %% %% @see catch_expr/1 @@ -3967,9 +3683,6 @@ catch_expr_body(Node) -> %% ===================================================================== -%% @spec match_expr(Pattern::syntaxTree(), Body::syntaxTree()) -> -%% syntaxTree() -%% %% @doc Creates an abstract match-expression. The result represents %% "<code><em>Pattern</em> = <em>Body</em></code>". %% @@ -4002,9 +3715,7 @@ revert_match_expr(Node) -> %% ===================================================================== -%% @spec match_expr_pattern(syntaxTree()) -> syntaxTree() -%% -%% @doc Returns the pattern subtree of a <code>match_expr</code> node. +%% @doc Returns the pattern subtree of a `match_expr' node. %% %% @see match_expr/2 @@ -4020,9 +3731,7 @@ match_expr_pattern(Node) -> %% ===================================================================== -%% @spec match_expr_body(syntaxTree()) -> syntaxTree() -%% -%% @doc Returns the body subtree of a <code>match_expr</code> node. +%% @doc Returns the body subtree of a `match_expr' node. %% %% @see match_expr/2 @@ -4038,15 +3747,12 @@ match_expr_body(Node) -> %% ===================================================================== -%% @spec operator(Name) -> syntaxTree() -%% Name = atom() | string() -%% %% @doc Creates an abstract operator. The name of the operator is the -%% character sequence represented by <code>Name</code>. This is +%% character sequence represented by `Name'. This is %% analogous to the print name of an atom, but an operator is never %% written within single-quotes; e.g., the result of -%% <code>operator('++')</code> represents "<code>++</code>" rather -%% than "<code>'++'</code>". +%% `operator('++')' represents "`++'" rather +%% than "`'++''". %% %% @see operator_name/1 %% @see operator_literal/1 @@ -4064,9 +3770,7 @@ operator(Name) -> %% ===================================================================== -%% @spec operator_name(syntaxTree()) -> atom() -%% -%% @doc Returns the name of an <code>operator</code> node. Note that +%% @doc Returns the name of an `operator' node. Note that %% the name is returned as an atom. %% %% @see operator/1 @@ -4078,11 +3782,8 @@ operator_name(Node) -> %% ===================================================================== -%% @spec operator_literal(syntaxTree()) -> string() -%% %% @doc Returns the literal string represented by an -%% <code>operator</code> node. This is simply the operator name as a -%% string. +%% `operator' node. This is simply the operator name as a string. %% %% @see operator/1 @@ -4093,9 +3794,6 @@ operator_literal(Node) -> %% ===================================================================== -%% @spec infix_expr(Left::syntaxTree(), Operator::syntaxTree(), -%% Right::syntaxTree()) -> syntaxTree() -%% %% @doc Creates an abstract infix operator expression. The result %% represents "<code><em>Left</em> <em>Operator</em> %% <em>Right</em></code>". @@ -4144,10 +3842,8 @@ revert_infix_expr(Node) -> %% ===================================================================== -%% @spec infix_expr_left(syntaxTree()) -> syntaxTree() -%% %% @doc Returns the left argument subtree of an -%% <code>infix_expr</code> node. +%% `infix_expr' node. %% %% @see infix_expr/3 @@ -4163,10 +3859,7 @@ infix_expr_left(Node) -> %% ===================================================================== -%% @spec infix_expr_operator(syntaxTree()) -> syntaxTree() -%% -%% @doc Returns the operator subtree of an <code>infix_expr</code> -%% node. +%% @doc Returns the operator subtree of an `infix_expr' node. %% %% @see infix_expr/3 @@ -4182,10 +3875,8 @@ infix_expr_operator(Node) -> %% ===================================================================== -%% @spec infix_expr_right(syntaxTree()) -> syntaxTree() -%% %% @doc Returns the right argument subtree of an -%% <code>infix_expr</code> node. +%% `infix_expr' node. %% %% @see infix_expr/3 @@ -4201,9 +3892,6 @@ infix_expr_right(Node) -> %% ===================================================================== -%% @spec prefix_expr(Operator::syntaxTree(), Argument::syntaxTree()) -> -%% syntaxTree() -%% %% @doc Creates an abstract prefix operator expression. The result %% represents "<code><em>Operator</em> <em>Argument</em></code>". %% @@ -4247,10 +3935,7 @@ revert_prefix_expr(Node) -> %% ===================================================================== -%% @spec prefix_expr_operator(syntaxTree()) -> syntaxTree() -%% -%% @doc Returns the operator subtree of a <code>prefix_expr</code> -%% node. +%% @doc Returns the operator subtree of a `prefix_expr' node. %% %% @see prefix_expr/2 @@ -4266,10 +3951,7 @@ prefix_expr_operator(Node) -> %% ===================================================================== -%% @spec prefix_expr_argument(syntaxTree()) -> syntaxTree() -%% -%% @doc Returns the argument subtree of a <code>prefix_expr</code> -%% node. +%% @doc Returns the argument subtree of a `prefix_expr' node. %% %% @see prefix_expr/2 @@ -4285,7 +3967,6 @@ prefix_expr_argument(Node) -> %% ===================================================================== -%% @spec record_field(Name) -> syntaxTree() %% @equiv record_field(Name, none) -spec record_field(syntaxTree()) -> syntaxTree(). @@ -4295,11 +3976,8 @@ record_field(Name) -> %% ===================================================================== -%% @spec record_field(Name::syntaxTree(), Value) -> syntaxTree() -%% Value = none | syntaxTree() -%% %% @doc Creates an abstract record field specification. If -%% <code>Value</code> is <code>none</code>, the result represents +%% `Value' is `none', the result represents %% simply "<code><em>Name</em></code>", otherwise it represents %% "<code><em>Name</em> = <em>Value</em></code>". %% @@ -4321,9 +3999,7 @@ record_field(Name, Value) -> %% ===================================================================== -%% @spec record_field_name(syntaxTree()) -> syntaxTree() -%% -%% @doc Returns the name subtree of a <code>record_field</code> node. +%% @doc Returns the name subtree of a `record_field' node. %% %% @see record_field/2 @@ -4334,13 +4010,11 @@ record_field_name(Node) -> %% ===================================================================== -%% @spec record_field_value(syntaxTree()) -> none | syntaxTree() -%% -%% @doc Returns the value subtree of a <code>record_field</code> node, -%% if any. If <code>Node</code> represents -%% "<code><em>Name</em></code>", <code>none</code> is -%% returned. Otherwise, if <code>Node</code> represents -%% "<code><em>Name</em> = <em>Value</em></code>", <code>Value</code> +%% @doc Returns the value subtree of a `record_field' node, +%% if any. If `Node' represents +%% "<code><em>Name</em></code>", `none' is +%% returned. Otherwise, if `Node' represents +%% "<code><em>Name</em> = <em>Value</em></code>", `Value' %% is returned. %% %% @see record_field/2 @@ -4352,15 +4026,12 @@ record_field_value(Node) -> %% ===================================================================== -%% @spec record_index_expr(Type::syntaxTree(), Field::syntaxTree()) -> -%% syntaxTree() -%% %% @doc Creates an abstract record field index expression. The result %% represents "<code>#<em>Type</em>.<em>Field</em></code>". %% -%% <p>(Note: the function name <code>record_index/2</code> is reserved +%% (Note: the function name `record_index/2' is reserved %% by the Erlang compiler, which is why that name could not be used -%% for this constructor.)</p> +%% for this constructor.) %% %% @see record_index_expr_type/1 %% @see record_index_expr_field/1 @@ -4399,10 +4070,7 @@ revert_record_index_expr(Node) -> %% ===================================================================== -%% @spec record_index_expr_type(syntaxTree()) -> syntaxTree() -%% -%% @doc Returns the type subtree of a <code>record_index_expr</code> -%% node. +%% @doc Returns the type subtree of a `record_index_expr' node. %% %% @see record_index_expr/2 @@ -4418,10 +4086,7 @@ record_index_expr_type(Node) -> %% ===================================================================== -%% @spec record_index_expr_field(syntaxTree()) -> syntaxTree() -%% -%% @doc Returns the field subtree of a <code>record_index_expr</code> -%% node. +%% @doc Returns the field subtree of a `record_index_expr' node. %% %% @see record_index_expr/2 @@ -4437,7 +4102,6 @@ record_index_expr_field(Node) -> %% ===================================================================== -%% @spec record_access(Argument, Field) -> syntaxTree() %% @equiv record_access(Argument, none, Field) -spec record_access(syntaxTree(), syntaxTree()) -> syntaxTree(). @@ -4447,17 +4111,13 @@ record_access(Argument, Field) -> %% ===================================================================== -%% @spec record_access(Argument::syntaxTree(), Type, -%% Field::syntaxTree()) -> syntaxTree() -%% Type = none | syntaxTree() -%% %% @doc Creates an abstract record field access expression. If -%% <code>Type</code> is not <code>none</code>, the result represents +%% `Type' is not `none', the result represents %% "<code><em>Argument</em>#<em>Type</em>.<em>Field</em></code>". %% -%% <p>If <code>Type</code> is <code>none</code>, the result represents +%% If `Type' is `none', the result represents %% "<code><em>Argument</em>.<em>Field</em></code>". This is a special -%% form only allowed within Mnemosyne queries.</p> +%% form only allowed within Mnemosyne queries. %% %% @see record_access/2 %% @see record_access_argument/1 @@ -4512,10 +4172,7 @@ revert_record_access(Node) -> %% ===================================================================== -%% @spec record_access_argument(syntaxTree()) -> syntaxTree() -%% -%% @doc Returns the argument subtree of a <code>record_access</code> -%% node. +%% @doc Returns the argument subtree of a `record_access' node. %% %% @see record_access/3 @@ -4533,14 +4190,12 @@ record_access_argument(Node) -> %% ===================================================================== -%% @spec record_access_type(syntaxTree()) -> none | syntaxTree() -%% -%% @doc Returns the type subtree of a <code>record_access</code> node, -%% if any. If <code>Node</code> represents -%% "<code><em>Argument</em>.<em>Field</em></code>", <code>none</code> -%% is returned, otherwise if <code>Node</code> represents +%% @doc Returns the type subtree of a `record_access' node, +%% if any. If `Node' represents +%% "<code><em>Argument</em>.<em>Field</em></code>", `none' +%% is returned, otherwise if `Node' represents %% "<code><em>Argument</em>#<em>Type</em>.<em>Field</em></code>", -%% <code>Type</code> is returned. +%% `Type' is returned. %% %% @see record_access/3 @@ -4558,10 +4213,7 @@ record_access_type(Node) -> %% ===================================================================== -%% @spec record_access_field(syntaxTree()) -> syntaxTree() -%% -%% @doc Returns the field subtree of a <code>record_access</code> -%% node. +%% @doc Returns the field subtree of a `record_access' node. %% %% @see record_access/3 @@ -4579,7 +4231,6 @@ record_access_field(Node) -> %% ===================================================================== -%% @spec record_expr(Type, Fields) -> syntaxTree() %% @equiv record_expr(none, Type, Fields) -spec record_expr(syntaxTree(), [syntaxTree()]) -> syntaxTree(). @@ -4589,13 +4240,9 @@ record_expr(Type, Fields) -> %% ===================================================================== -%% @spec record_expr(Argument, Type::syntaxTree(), -%% Fields::[syntaxTree()]) -> syntaxTree() -%% Argument = none | syntaxTree() -%% -%% @doc Creates an abstract record expression. If <code>Fields</code> is -%% <code>[F1, ..., Fn]</code>, then if <code>Argument</code> is -%% <code>none</code>, the result represents +%% @doc Creates an abstract record expression. If `Fields' is +%% `[F1, ..., Fn]', then if `Argument' is +%% `none', the result represents %% "<code>#<em>Type</em>{<em>F1</em>, ..., <em>Fn</em>}</code>", %% otherwise it represents %% "<code><em>Argument</em>#<em>Type</em>{<em>F1</em>, ..., @@ -4661,14 +4308,12 @@ revert_record_expr(Node) -> %% ===================================================================== -%% @spec record_expr_argument(syntaxTree()) -> none | syntaxTree() -%% -%% @doc Returns the argument subtree of a <code>record_expr</code> node, -%% if any. If <code>Node</code> represents -%% "<code>#<em>Type</em>{...}</code>", <code>none</code> is returned. -%% Otherwise, if <code>Node</code> represents +%% @doc Returns the argument subtree of a `record_expr' node, +%% if any. If `Node' represents +%% "<code>#<em>Type</em>{...}</code>", `none' is returned. +%% Otherwise, if `Node' represents %% "<code><em>Argument</em>#<em>Type</em>{...}</code>", -%% <code>Argument</code> is returned. +%% `Argument' is returned. %% %% @see record_expr/3 @@ -4686,9 +4331,7 @@ record_expr_argument(Node) -> %% ===================================================================== -%% @spec record_expr_type(syntaxTree()) -> syntaxTree() -%% -%% @doc Returns the type subtree of a <code>record_expr</code> node. +%% @doc Returns the type subtree of a `record_expr' node. %% %% @see record_expr/3 @@ -4706,10 +4349,8 @@ record_expr_type(Node) -> %% ===================================================================== -%% @spec record_expr_fields(syntaxTree()) -> [syntaxTree()] -%% %% @doc Returns the list of field subtrees of a -%% <code>record_expr</code> node. +%% `record_expr' node. %% %% @see record_expr/3 @@ -4727,15 +4368,11 @@ record_expr_fields(Node) -> %% ===================================================================== -%% @spec application(Module, Function::syntaxTree(), -%% Arguments::[syntaxTree()]) -> syntaxTree() -%% Module = none | syntaxTree() -%% %% @doc Creates an abstract function application expression. If -%% <code>Module</code> is <code>none</code>, this is call is equivalent -%% to <code>application(Function, Arguments)</code>, otherwise it is -%% equivalent to <code>application(module_qualifier(Module, Function), -%% Arguments)</code>. +%% `Module' is `none', this is call is equivalent +%% to `application(Function, Arguments)', otherwise it is +%% equivalent to `application(module_qualifier(Module, Function), +%% Arguments)'. %% %% (This is a utility function.) %% @@ -4752,11 +4389,8 @@ application(Module, Name, Arguments) -> %% ===================================================================== -%% @spec application(Operator::syntaxTree(), -%% Arguments::[syntaxTree()]) -> syntaxTree() -%% %% @doc Creates an abstract function application expression. If -%% <code>Arguments</code> is <code>[A1, ..., An]</code>, the result +%% `Arguments' is `[A1, ..., An]', the result %% represents "<code><em>Operator</em>(<em>A1</em>, ..., %% <em>An</em>)</code>". %% @@ -4794,14 +4428,11 @@ revert_application(Node) -> %% ===================================================================== -%% @spec application_operator(syntaxTree()) -> syntaxTree() +%% @doc Returns the operator subtree of an `application' node. %% -%% @doc Returns the operator subtree of an <code>application</code> -%% node. -%% -%% <p>Note: if <code>Node</code> represents +%% Note: if `Node' represents %% "<code><em>M</em>:<em>F</em>(...)</code>", then the result is the -%% subtree representing "<code><em>M</em>:<em>F</em></code>".</p> +%% subtree representing "<code><em>M</em>:<em>F</em></code>". %% %% @see application/2 %% @see module_qualifier/2 @@ -4818,10 +4449,8 @@ application_operator(Node) -> %% ===================================================================== -%% @spec application_arguments(syntaxTree()) -> [syntaxTree()] -%% %% @doc Returns the list of argument subtrees of an -%% <code>application</code> node. +%% `application' node. %% %% @see application/2 @@ -4837,11 +4466,8 @@ application_arguments(Node) -> %% ===================================================================== -%% @spec list_comp(Template::syntaxTree(), Body::[syntaxTree()]) -> -%% syntaxTree() -%% -%% @doc Creates an abstract list comprehension. If <code>Body</code> is -%% <code>[E1, ..., En]</code>, the result represents +%% @doc Creates an abstract list comprehension. If `Body' is +%% `[E1, ..., En]', the result represents %% "<code>[<em>Template</em> || <em>E1</em>, ..., <em>En</em>]</code>". %% %% @see list_comp_template/1 @@ -4876,9 +4502,7 @@ revert_list_comp(Node) -> %% ===================================================================== -%% @spec list_comp_template(syntaxTree()) -> syntaxTree() -%% -%% @doc Returns the template subtree of a <code>list_comp</code> node. +%% @doc Returns the template subtree of a `list_comp' node. %% %% @see list_comp/2 @@ -4894,10 +4518,7 @@ list_comp_template(Node) -> %% ===================================================================== -%% @spec list_comp_body(syntaxTree()) -> [syntaxTree()] -%% -%% @doc Returns the list of body subtrees of a <code>list_comp</code> -%% node. +%% @doc Returns the list of body subtrees of a `list_comp' node. %% %% @see list_comp/2 @@ -4912,11 +4533,8 @@ list_comp_body(Node) -> end. %% ===================================================================== -%% @spec binary_comp(Template::syntaxTree(), Body::[syntaxTree()]) -> -%% syntaxTree() -%% -%% @doc Creates an abstract binary comprehension. If <code>Body</code> is -%% <code>[E1, ..., En]</code>, the result represents +%% @doc Creates an abstract binary comprehension. If `Body' is +%% `[E1, ..., En]', the result represents %% "<code><<<em>Template</em> || <em>E1</em>, ..., <em>En</em>>></code>". %% %% @see binary_comp_template/1 @@ -4951,9 +4569,7 @@ revert_binary_comp(Node) -> %% ===================================================================== -%% @spec binary_comp_template(syntaxTree()) -> syntaxTree() -%% -%% @doc Returns the template subtree of a <code>binary_comp</code> node. +%% @doc Returns the template subtree of a `binary_comp' node. %% %% @see binary_comp/2 @@ -4969,10 +4585,7 @@ binary_comp_template(Node) -> %% ===================================================================== -%% @spec binary_comp_body(syntaxTree()) -> [syntaxTree()] -%% -%% @doc Returns the list of body subtrees of a <code>binary_comp</code> -%% node. +%% @doc Returns the list of body subtrees of a `binary_comp' node. %% %% @see binary_comp/2 @@ -4988,8 +4601,6 @@ binary_comp_body(Node) -> %% ===================================================================== -%% @spec query_expr(Body::syntaxTree()) -> syntaxTree() -%% %% @doc Creates an abstract Mnemosyne query expression. The result %% represents "<code>query <em>Body</em> end</code>". %% @@ -5018,9 +4629,7 @@ revert_query_expr(Node) -> %% ===================================================================== -%% @spec query_expr_body(syntaxTree()) -> syntaxTree() -%% -%% @doc Returns the body subtree of a <code>query_expr</code> node. +%% @doc Returns the body subtree of a `query_expr' node. %% %% @see query_expr/1 @@ -5036,13 +4645,10 @@ query_expr_body(Node) -> %% ===================================================================== -%% @spec rule(Name::syntaxTree(), Clauses::[syntaxTree()]) -> -%% syntaxTree() -%% -%% @doc Creates an abstract Mnemosyne rule. If <code>Clauses</code> is -%% <code>[C1, ..., Cn]</code>, the results represents +%% @doc Creates an abstract Mnemosyne rule. If `Clauses' is +%% `[C1, ..., Cn]', the results represents %% "<code><em>Name</em> <em>C1</em>; ...; <em>Name</em> -%% <em>Cn</em>.</code>". More exactly, if each <code>Ci</code> +%% <em>Cn</em>.</code>". More exactly, if each `Ci' %% represents "<code>(<em>Pi1</em>, ..., <em>Pim</em>) <em>Gi</em> -> %% <em>Bi</em></code>", then the result represents %% "<code><em>Name</em>(<em>P11</em>, ..., <em>P1m</em>) <em>G1</em> :- @@ -5097,9 +4703,7 @@ revert_rule(Node) -> %% ===================================================================== -%% @spec rule_name(syntaxTree()) -> syntaxTree() -%% -%% @doc Returns the name subtree of a <code>rule</code> node. +%% @doc Returns the name subtree of a `rule' node. %% %% @see rule/2 @@ -5114,9 +4718,7 @@ rule_name(Node) -> end. %% ===================================================================== -%% @spec rule_clauses(syntaxTree()) -> [syntaxTree()] -%% -%% @doc Returns the list of clause subtrees of a <code>rule</code> node. +%% @doc Returns the list of clause subtrees of a `rule' node. %% %% @see rule/2 @@ -5131,16 +4733,14 @@ rule_clauses(Node) -> end. %% ===================================================================== -%% @spec rule_arity(Node::syntaxTree()) -> integer() -%% -%% @doc Returns the arity of a <code>rule</code> node. The result is the +%% @doc Returns the arity of a `rule' node. The result is the %% number of parameter patterns in the first clause of the rule; %% subsequent clauses are ignored. %% -%% <p>An exception is thrown if <code>rule_clauses(Node)</code> returns +%% An exception is thrown if `rule_clauses(Node)' returns %% an empty list, or if the first element of that list is not a syntax -%% tree <code>C</code> of type <code>clause</code> such that -%% <code>clause_patterns(C)</code> is a nonempty list.</p> +%% tree `C' of type `clause' such that +%% `clause_patterns(C)' is a nonempty list. %% %% @see rule/2 %% @see rule_clauses/1 @@ -5156,9 +4756,6 @@ rule_arity(Node) -> %% ===================================================================== -%% @spec generator(Pattern::syntaxTree(), Body::syntaxTree()) -> -%% syntaxTree() -%% %% @doc Creates an abstract generator. The result represents %% "<code><em>Pattern</em> <- <em>Body</em></code>". %% @@ -5193,9 +4790,7 @@ revert_generator(Node) -> %% ===================================================================== -%% @spec generator_pattern(syntaxTree()) -> syntaxTree() -%% -%% @doc Returns the pattern subtree of a <code>generator</code> node. +%% @doc Returns the pattern subtree of a `generator' node. %% %% @see generator/2 @@ -5211,9 +4806,7 @@ generator_pattern(Node) -> %% ===================================================================== -%% @spec generator_body(syntaxTree()) -> syntaxTree() -%% -%% @doc Returns the body subtree of a <code>generator</code> node. +%% @doc Returns the body subtree of a `generator' node. %% %% @see generator/2 @@ -5229,9 +4822,6 @@ generator_body(Node) -> %% ===================================================================== -%% @spec binary_generator(Pattern::syntaxTree(), Body::syntaxTree()) -> -%% syntaxTree() -%% %% @doc Creates an abstract binary_generator. The result represents %% "<code><em>Pattern</em> <- <em>Body</em></code>". %% @@ -5266,9 +4856,7 @@ revert_binary_generator(Node) -> %% ===================================================================== -%% @spec binary_generator_pattern(syntaxTree()) -> syntaxTree() -%% -%% @doc Returns the pattern subtree of a <code>generator</code> node. +%% @doc Returns the pattern subtree of a `generator' node. %% %% @see binary_generator/2 @@ -5284,9 +4872,7 @@ binary_generator_pattern(Node) -> %% ===================================================================== -%% @spec binary_generator_body(syntaxTree()) -> syntaxTree() -%% -%% @doc Returns the body subtree of a <code>generator</code> node. +%% @doc Returns the body subtree of a `generator' node. %% %% @see binary_generator/2 @@ -5302,10 +4888,8 @@ binary_generator_body(Node) -> %% ===================================================================== -%% @spec block_expr(Body::[syntaxTree()]) -> syntaxTree() -%% -%% @doc Creates an abstract block expression. If <code>Body</code> is -%% <code>[B1, ..., Bn]</code>, the result represents "<code>begin +%% @doc Creates an abstract block expression. If `Body' is +%% `[B1, ..., Bn]', the result represents "<code>begin %% <em>B1</em>, ..., <em>Bn</em> end</code>". %% %% @see block_expr_body/1 @@ -5321,7 +4905,7 @@ binary_generator_body(Node) -> %% %% Body = [erl_parse()] \ [] --spec block_expr(Body::[syntaxTree()]) -> syntaxTree(). +-spec block_expr([syntaxTree()]) -> syntaxTree(). block_expr(Body) -> tree(block_expr, Body). @@ -5333,10 +4917,7 @@ revert_block_expr(Node) -> %% ===================================================================== -%% @spec block_expr_body(syntaxTree()) -> [syntaxTree()] -%% -%% @doc Returns the list of body subtrees of a <code>block_expr</code> -%% node. +%% @doc Returns the list of body subtrees of a `block_expr' node. %% %% @see block_expr/1 @@ -5352,12 +4933,10 @@ block_expr_body(Node) -> %% ===================================================================== -%% @spec if_expr(Clauses::[syntaxTree()]) -> syntaxTree() -%% -%% @doc Creates an abstract if-expression. If <code>Clauses</code> is -%% <code>[C1, ..., Cn]</code>, the result represents "<code>if +%% @doc Creates an abstract if-expression. If `Clauses' is +%% `[C1, ..., Cn]', the result represents "<code>if %% <em>C1</em>; ...; <em>Cn</em> end</code>". More exactly, if each -%% <code>Ci</code> represents "<code>() <em>Gi</em> -> +%% `Ci' represents "<code>() <em>Gi</em> -> %% <em>Bi</em></code>", then the result represents "<code>if %% <em>G1</em> -> <em>B1</em>; ...; <em>Gn</em> -> <em>Bn</em> %% end</code>". @@ -5392,10 +4971,7 @@ revert_if_expr(Node) -> %% ===================================================================== -%% @spec if_expr_clauses(syntaxTree()) -> [syntaxTree()] -%% -%% @doc Returns the list of clause subtrees of an <code>if_expr</code> -%% node. +%% @doc Returns the list of clause subtrees of an `if_expr' node. %% %% @see if_expr/1 @@ -5411,13 +4987,10 @@ if_expr_clauses(Node) -> %% ===================================================================== -%% @spec case_expr(Argument::syntaxTree(), Clauses::[syntaxTree()]) -> -%% syntaxTree() -%% -%% @doc Creates an abstract case-expression. If <code>Clauses</code> is -%% <code>[C1, ..., Cn]</code>, the result represents "<code>case +%% @doc Creates an abstract case-expression. If `Clauses' is +%% `[C1, ..., Cn]', the result represents "<code>case %% <em>Argument</em> of <em>C1</em>; ...; <em>Cn</em> end</code>". More -%% exactly, if each <code>Ci</code> represents "<code>(<em>Pi</em>) +%% exactly, if each `Ci' represents "<code>(<em>Pi</em>) %% <em>Gi</em> -> <em>Bi</em></code>", then the result represents %% "<code>case <em>Argument</em> of <em>P1</em> <em>G1</em> -> %% <em>B1</em>; ...; <em>Pn</em> <em>Gn</em> -> <em>Bn</em> end</code>". @@ -5461,9 +5034,7 @@ revert_case_expr(Node) -> %% ===================================================================== -%% @spec case_expr_argument(syntaxTree()) -> syntaxTree() -%% -%% @doc Returns the argument subtree of a <code>case_expr</code> node. +%% @doc Returns the argument subtree of a `case_expr' node. %% %% @see case_expr/2 @@ -5479,10 +5050,7 @@ case_expr_argument(Node) -> %% ===================================================================== -%% @spec case_expr_clauses(syntaxTree()) -> [syntaxTree()] -%% -%% @doc Returns the list of clause subtrees of a <code>case_expr</code> -%% node. +%% @doc Returns the list of clause subtrees of a `case_expr' node. %% %% @see case_expr/2 @@ -5498,12 +5066,10 @@ case_expr_clauses(Node) -> %% ===================================================================== -%% @spec cond_expr(Clauses::[syntaxTree()]) -> syntaxTree() -%% -%% @doc Creates an abstract cond-expression. If <code>Clauses</code> is -%% <code>[C1, ..., Cn]</code>, the result represents "<code>cond +%% @doc Creates an abstract cond-expression. If `Clauses' is +%% `[C1, ..., Cn]', the result represents "<code>cond %% <em>C1</em>; ...; <em>Cn</em> end</code>". More exactly, if each -%% <code>Ci</code> represents "<code>() <em>Ei</em> -> +%% `Ci' represents "<code>() <em>Ei</em> -> %% <em>Bi</em></code>", then the result represents "<code>cond %% <em>E1</em> -> <em>B1</em>; ...; <em>En</em> -> <em>Bn</em> %% end</code>". @@ -5538,10 +5104,7 @@ revert_cond_expr(Node) -> %% ===================================================================== -%% @spec cond_expr_clauses(syntaxTree()) -> [syntaxTree()] -%% -%% @doc Returns the list of clause subtrees of a <code>cond_expr</code> -%% node. +%% @doc Returns the list of clause subtrees of a `cond_expr' node. %% %% @see cond_expr/1 @@ -5557,7 +5120,6 @@ cond_expr_clauses(Node) -> %% ===================================================================== -%% @spec receive_expr(Clauses) -> syntaxTree() %% @equiv receive_expr(Clauses, none, []) -spec receive_expr([syntaxTree()]) -> syntaxTree(). @@ -5567,25 +5129,21 @@ receive_expr(Clauses) -> %% ===================================================================== -%% @spec receive_expr(Clauses::[syntaxTree()], Timeout, -%% Action::[syntaxTree()]) -> syntaxTree() -%% Timeout = none | syntaxTree() -%% -%% @doc Creates an abstract receive-expression. If <code>Timeout</code> -%% is <code>none</code>, the result represents "<code>receive -%% <em>C1</em>; ...; <em>Cn</em> end</code>" (the <code>Action</code> -%% argument is ignored). Otherwise, if <code>Clauses</code> is -%% <code>[C1, ..., Cn]</code> and <code>Action</code> is <code>[A1, ..., -%% Am]</code>, the result represents "<code>receive <em>C1</em>; ...; +%% @doc Creates an abstract receive-expression. If `Timeout' +%% is `none', the result represents "<code>receive +%% <em>C1</em>; ...; <em>Cn</em> end</code>" (the `Action' +%% argument is ignored). Otherwise, if `Clauses' is +%% `[C1, ..., Cn]' and `Action' is `[A1, ..., +%% Am]', the result represents "<code>receive <em>C1</em>; ...; %% <em>Cn</em> after <em>Timeout</em> -> <em>A1</em>, ..., <em>Am</em> -%% end</code>". More exactly, if each <code>Ci</code> represents +%% end</code>". More exactly, if each `Ci' represents %% "<code>(<em>Pi</em>) <em>Gi</em> -> <em>Bi</em></code>", then the %% result represents "<code>receive <em>P1</em> <em>G1</em> -> %% <em>B1</em>; ...; <em>Pn</em> <em>Gn</em> -> <em>Bn</em> ... %% end</code>". %% -%% <p>Note that in Erlang, a receive-expression must have at least one -%% clause if no timeout part is specified.</p> +%% Note that in Erlang, a receive-expression must have at least one +%% clause if no timeout part is specified. %% %% @see receive_expr_clauses/1 %% @see receive_expr_timeout/1 @@ -5649,11 +5207,8 @@ revert_receive_expr(Node) -> %% ===================================================================== -%% @spec receive_expr_clauses(syntaxTree()) -> [syntaxTree()] -%% type(Node) = receive_expr -%% %% @doc Returns the list of clause subtrees of a -%% <code>receive_expr</code> node. +%% `receive_expr' node. %% %% @see receive_expr/3 @@ -5671,15 +5226,12 @@ receive_expr_clauses(Node) -> %% ===================================================================== -%% @spec receive_expr_timeout(Node::syntaxTree()) -> Timeout -%% Timeout = none | syntaxTree() -%% -%% @doc Returns the timeout subtree of a <code>receive_expr</code> node, -%% if any. If <code>Node</code> represents "<code>receive <em>C1</em>; -%% ...; <em>Cn</em> end</code>", <code>none</code> is returned. -%% Otherwise, if <code>Node</code> represents "<code>receive +%% @doc Returns the timeout subtree of a `receive_expr' node, +%% if any. If `Node' represents "<code>receive <em>C1</em>; +%% ...; <em>Cn</em> end</code>", `none' is returned. +%% Otherwise, if `Node' represents "<code>receive %% <em>C1</em>; ...; <em>Cn</em> after <em>Timeout</em> -> ... end</code>", -%% <code>Timeout</code> is returned. +%% `Timeout' is returned. %% %% @see receive_expr/3 @@ -5697,10 +5249,8 @@ receive_expr_timeout(Node) -> %% ===================================================================== -%% @spec receive_expr_action(Node::syntaxTree()) -> [syntaxTree()] -%% %% @doc Returns the list of action body subtrees of a -%% <code>receive_expr</code> node. If <code>Node</code> represents +%% `receive_expr' node. If `Node' represents %% "<code>receive <em>C1</em>; ...; <em>Cn</em> end</code>", this is the %% empty list. %% @@ -5720,8 +5270,6 @@ receive_expr_action(Node) -> %% ===================================================================== -%% @spec try_expr(Body::syntaxTree(), Handlers::[syntaxTree()]) -> -%% syntaxTree() %% @equiv try_expr(Body, [], Handlers) -spec try_expr([syntaxTree()], [syntaxTree()]) -> syntaxTree(). @@ -5731,8 +5279,6 @@ try_expr(Body, Handlers) -> %% ===================================================================== -%% @spec try_expr(Body::syntaxTree(), Clauses::[syntaxTree()], -%% Handlers::[syntaxTree()]) -> syntaxTree() %% @equiv try_expr(Body, Clauses, Handlers, []) -spec try_expr([syntaxTree()], [syntaxTree()], [syntaxTree()]) -> syntaxTree(). @@ -5742,8 +5288,6 @@ try_expr(Body, Clauses, Handlers) -> %% ===================================================================== -%% @spec try_after_expr(Body::syntaxTree(), After::[syntaxTree()]) -> -%% syntaxTree() %% @equiv try_expr(Body, [], [], After) -spec try_after_expr([syntaxTree()], [syntaxTree()]) -> syntaxTree(). @@ -5753,30 +5297,26 @@ try_after_expr(Body, After) -> %% ===================================================================== -%% @spec try_expr(Body::[syntaxTree()], Clauses::[syntaxTree()], -%% Handlers::[syntaxTree()], After::[syntaxTree()]) -> -%% syntaxTree() -%% -%% @doc Creates an abstract try-expression. If <code>Body</code> is -%% <code>[B1, ..., Bn]</code>, <code>Clauses</code> is <code>[C1, ..., -%% Cj]</code>, <code>Handlers</code> is <code>[H1, ..., Hk]</code>, and -%% <code>After</code> is <code>[A1, ..., Am]</code>, the result +%% @doc Creates an abstract try-expression. If `Body' is +%% `[B1, ..., Bn]', `Clauses' is `[C1, ..., +%% Cj]', `Handlers' is `[H1, ..., Hk]', and +%% `After' is `[A1, ..., Am]', the result %% represents "<code>try <em>B1</em>, ..., <em>Bn</em> of <em>C1</em>; %% ...; <em>Cj</em> catch <em>H1</em>; ...; <em>Hk</em> after %% <em>A1</em>, ..., <em>Am</em> end</code>". More exactly, if each -%% <code>Ci</code> represents "<code>(<em>CPi</em>) <em>CGi</em> -> -%% <em>CBi</em></code>", and each <code>Hi</code> represents +%% `Ci' represents "<code>(<em>CPi</em>) <em>CGi</em> -> +%% <em>CBi</em></code>", and each `Hi' represents %% "<code>(<em>HPi</em>) <em>HGi</em> -> <em>HBi</em></code>", then the %% result represents "<code>try <em>B1</em>, ..., <em>Bn</em> of %% <em>CP1</em> <em>CG1</em> -> <em>CB1</em>; ...; <em>CPj</em> %% <em>CGj</em> -> <em>CBj</em> catch <em>HP1</em> <em>HG1</em> -> %% <em>HB1</em>; ...; <em>HPk</em> <em>HGk</em> -> <em>HBk</em> after -%% <em>A1</em>, ..., <em>Am</em> end</code>"; cf. -%% <code>case_expr/2</code>. If <code>Clauses</code> is the empty list, -%% the <code>of ...</code> section is left out. If <code>After</code> is -%% the empty list, the <code>after ...</code> section is left out. If -%% <code>Handlers</code> is the empty list, and <code>After</code> is -%% nonempty, the <code>catch ...</code> section is left out. +%% <em>A1</em>, ..., <em>Am</em> end</code>"; see +%% {@link case_expr/2}. If `Clauses' is the empty list, +%% the `of ...' section is left out. If `After' is +%% the empty list, the `after ...' section is left out. If +%% `Handlers' is the empty list, and `After' is +%% nonempty, the `catch ...' section is left out. %% %% @see try_expr_body/1 %% @see try_expr_clauses/1 @@ -5834,10 +5374,7 @@ revert_try_expr(Node) -> %% ===================================================================== -%% @spec try_expr_body(syntaxTree()) -> [syntaxTree()] -%% -%% @doc Returns the list of body subtrees of a <code>try_expr</code> -%% node. +%% @doc Returns the list of body subtrees of a `try_expr' node. %% %% @see try_expr/4 @@ -5853,10 +5390,8 @@ try_expr_body(Node) -> %% ===================================================================== -%% @spec try_expr_clauses(Node::syntaxTree()) -> [syntaxTree()] -%% %% @doc Returns the list of case-clause subtrees of a -%% <code>try_expr</code> node. If <code>Node</code> represents +%% `try_expr' node. If `Node' represents %% "<code>try <em>Body</em> catch <em>H1</em>; ...; <em>Hn</em> %% end</code>", the result is the empty list. %% @@ -5874,10 +5409,8 @@ try_expr_clauses(Node) -> %% ===================================================================== -%% @spec try_expr_handlers(syntaxTree()) -> [syntaxTree()] -%% %% @doc Returns the list of handler-clause subtrees of a -%% <code>try_expr</code> node. +%% `try_expr' node. %% %% @see try_expr/4 @@ -5893,10 +5426,7 @@ try_expr_handlers(Node) -> %% ===================================================================== -%% @spec try_expr_after(syntaxTree()) -> [syntaxTree()] -%% -%% @doc Returns the list of "after" subtrees of a <code>try_expr</code> -%% node. +%% @doc Returns the list of "after" subtrees of a `try_expr' node. %% %% @see try_expr/4 @@ -5912,9 +5442,6 @@ try_expr_after(Node) -> %% ===================================================================== -%% @spec class_qualifier(Class::syntaxTree(), Body::syntaxTree()) -> -%% syntaxTree() -%% %% @doc Creates an abstract class qualifier. The result represents %% "<code><em>Class</em>:<em>Body</em></code>". %% @@ -5937,10 +5464,8 @@ class_qualifier(Class, Body) -> %% ===================================================================== -%% @spec class_qualifier_argument(syntaxTree()) -> syntaxTree() -%% %% @doc Returns the argument (the class) subtree of a -%% <code>class_qualifier</code> node. +%% `class_qualifier' node. %% %% @see class_qualifier/2 @@ -5951,9 +5476,7 @@ class_qualifier_argument(Node) -> %% ===================================================================== -%% @spec class_qualifier_body(syntaxTree()) -> syntaxTree() -%% -%% @doc Returns the body subtree of a <code>class_qualifier</code> node. +%% @doc Returns the body subtree of a `class_qualifier' node. %% %% @see class_qualifier/2 @@ -5964,13 +5487,10 @@ class_qualifier_body(Node) -> %% ===================================================================== -%% @spec implicit_fun(Name::syntaxTree(), Arity::syntaxTree()) -> -%% syntaxTree() -%% %% @doc Creates an abstract "implicit fun" expression. If -%% <code>Arity</code> is <code>none</code>, this is equivalent to -%% <code>implicit_fun(Name)</code>, otherwise it is equivalent to -%% <code>implicit_fun(arity_qualifier(Name, Arity))</code>. +%% `Arity' is `none', this is equivalent to +%% `implicit_fun(Name)', otherwise it is equivalent to +%% `implicit_fun(arity_qualifier(Name, Arity))'. %% %% (This is a utility function.) %% @@ -5986,14 +5506,11 @@ implicit_fun(Name, Arity) -> %% ===================================================================== -%% @spec implicit_fun(Module::syntaxTree(), Name::syntaxTree(), -%% Arity::syntaxTree()) -> syntaxTree() -%% %% @doc Creates an abstract module-qualified "implicit fun" expression. -%% If <code>Module</code> is <code>none</code>, this is equivalent to -%% <code>implicit_fun(Name, Arity)</code>, otherwise it is equivalent to -%% <code>implicit_fun(module_qualifier(Module, arity_qualifier(Name, -%% Arity))</code>. +%% If `Module' is `none', this is equivalent to +%% `implicit_fun(Name, Arity)', otherwise it is equivalent to +%% `implicit_fun(module_qualifier(Module, arity_qualifier(Name, +%% Arity))'. %% %% (This is a utility function.) %% @@ -6010,10 +5527,8 @@ implicit_fun(Module, Name, Arity) -> %% ===================================================================== -%% @spec implicit_fun(Name::syntaxTree()) -> syntaxTree() -%% %% @doc Creates an abstract "implicit fun" expression. The result -%% represents "<code>fun <em>Name</em></code>". <code>Name</code> should +%% represents "<code>fun <em>Name</em></code>". `Name' should %% represent either <code><em>F</em>/<em>A</em></code> or %% <code><em>M</em>:<em>F</em>/<em>A</em></code> %% @@ -6072,15 +5587,13 @@ revert_implicit_fun(Node) -> %% ===================================================================== -%% @spec implicit_fun_name(Node::syntaxTree()) -> syntaxTree() +%% @doc Returns the name subtree of an `implicit_fun' node. %% -%% @doc Returns the name subtree of an <code>implicit_fun</code> node. -%% -%% <p>Note: if <code>Node</code> represents "<code>fun +%% Note: if `Node' represents "<code>fun %% <em>N</em>/<em>A</em></code>" or "<code>fun %% <em>M</em>:<em>N</em>/<em>A</em></code>", then the result is the %% subtree representing "<code><em>N</em>/<em>A</em></code>" or -%% "<code><em>M</em>:<em>N</em>/<em>A</em></code>", respectively.</p> +%% "<code><em>M</em>:<em>N</em>/<em>A</em></code>", respectively. %% %% @see implicit_fun/1 %% @see arity_qualifier/2 @@ -6110,12 +5623,10 @@ implicit_fun_name(Node) -> %% ===================================================================== -%% @spec fun_expr(Clauses::[syntaxTree()]) -> syntaxTree() -%% -%% @doc Creates an abstract fun-expression. If <code>Clauses</code> is -%% <code>[C1, ..., Cn]</code>, the result represents "<code>fun +%% @doc Creates an abstract fun-expression. If `Clauses' is +%% `[C1, ..., Cn]', the result represents "<code>fun %% <em>C1</em>; ...; <em>Cn</em> end</code>". More exactly, if each -%% <code>Ci</code> represents "<code>(<em>Pi1</em>, ..., <em>Pim</em>) +%% `Ci' represents "<code>(<em>Pi1</em>, ..., <em>Pim</em>) %% <em>Gi</em> -> <em>Bi</em></code>", then the result represents %% "<code>fun (<em>P11</em>, ..., <em>P1m</em>) <em>G1</em> -> %% <em>B1</em>; ...; (<em>Pn1</em>, ..., <em>Pnm</em>) <em>Gn</em> -> @@ -6152,10 +5663,7 @@ revert_fun_expr(Node) -> %% ===================================================================== -%% @spec fun_expr_clauses(syntaxTree()) -> [syntaxTree()] -%% -%% @doc Returns the list of clause subtrees of a <code>fun_expr</code> -%% node. +%% @doc Returns the list of clause subtrees of a `fun_expr' node. %% %% @see fun_expr/1 @@ -6171,16 +5679,14 @@ fun_expr_clauses(Node) -> %% ===================================================================== -%% @spec fun_expr_arity(syntaxTree()) -> integer() -%% -%% @doc Returns the arity of a <code>fun_expr</code> node. The result is +%% @doc Returns the arity of a `fun_expr' node. The result is %% the number of parameter patterns in the first clause of the %% fun-expression; subsequent clauses are ignored. %% -%% <p>An exception is thrown if <code>fun_expr_clauses(Node)</code> +%% An exception is thrown if `fun_expr_clauses(Node)' %% returns an empty list, or if the first element of that list is not a -%% syntax tree <code>C</code> of type <code>clause</code> such that -%% <code>clause_patterns(C)</code> is a nonempty list.</p> +%% syntax tree `C' of type `clause' such that +%% `clause_patterns(C)' is a nonempty list. %% %% @see fun_expr/1 %% @see fun_expr_clauses/1 @@ -6194,8 +5700,6 @@ fun_expr_arity(Node) -> %% ===================================================================== -%% @spec parentheses(Body::syntaxTree()) -> syntaxTree() -%% %% @doc Creates an abstract parenthesised expression. The result %% represents "<code>(<em>Body</em>)</code>", independently of the %% context. @@ -6215,9 +5719,7 @@ revert_parentheses(Node) -> %% ===================================================================== -%% @spec parentheses_body(syntaxTree()) -> syntaxTree() -%% -%% @doc Returns the body subtree of a <code>parentheses</code> node. +%% @doc Returns the body subtree of a `parentheses' node. %% %% @see parentheses/1 @@ -6228,7 +5730,6 @@ parentheses_body(Node) -> %% ===================================================================== -%% @spec macro(Name) -> syntaxTree() %% @equiv macro(Name, none) -spec macro(syntaxTree()) -> syntaxTree(). @@ -6238,25 +5739,22 @@ macro(Name) -> %% ===================================================================== -%% @spec macro(Name::syntaxTree(), Arguments) -> syntaxTree() -%% Arguments = none | [syntaxTree()] -%% -%% @doc Creates an abstract macro application. If <code>Arguments</code> -%% is <code>none</code>, the result represents -%% "<code>?<em>Name</em></code>", otherwise, if <code>Arguments</code> -%% is <code>[A1, ..., An]</code>, the result represents +%% @doc Creates an abstract macro application. If `Arguments' +%% is `none', the result represents +%% "<code>?<em>Name</em></code>", otherwise, if `Arguments' +%% is `[A1, ..., An]', the result represents %% "<code>?<em>Name</em>(<em>A1</em>, ..., <em>An</em>)</code>". %% -%% <p>Notes: if <code>Arguments</code> is the empty list, the result +%% Notes: if `Arguments' is the empty list, the result %% will thus represent "<code>?<em>Name</em>()</code>", including a pair -%% of matching parentheses.</p> +%% of matching parentheses. %% -%% <p>The only syntactical limitation imposed by the preprocessor on the +%% The only syntactical limitation imposed by the preprocessor on the %% arguments to a macro application (viewed as sequences of tokens) is %% that they must be balanced with respect to parentheses, brackets, -%% <code>begin ... end</code>, <code>case ... end</code>, etc. The -%% <code>text</code> node type can be used to represent arguments which -%% are not regular Erlang constructs.</p> +%% `begin ... end', `case ... end', etc. The +%% `text' node type can be used to represent arguments which +%% are not regular Erlang constructs. %% %% @see macro_name/1 %% @see macro_arguments/1 @@ -6278,9 +5776,7 @@ macro(Name, Arguments) -> %% ===================================================================== -%% @spec macro_name(syntaxTree()) -> syntaxTree() -%% -%% @doc Returns the name subtree of a <code>macro</code> node. +%% @doc Returns the name subtree of a `macro' node. %% %% @see macro/2 @@ -6291,14 +5787,12 @@ macro_name(Node) -> %% ===================================================================== -%% @spec macro_arguments(Node::syntaxTree()) -> none | [syntaxTree()] -%% -%% @doc Returns the list of argument subtrees of a <code>macro</code> -%% node, if any. If <code>Node</code> represents -%% "<code>?<em>Name</em></code>", <code>none</code> is returned. -%% Otherwise, if <code>Node</code> represents +%% @doc Returns the list of argument subtrees of a `macro' +%% node, if any. If `Node' represents +%% "<code>?<em>Name</em></code>", `none' is returned. +%% Otherwise, if `Node' represents %% "<code>?<em>Name</em>(<em>A1</em>, ..., <em>An</em>)</code>", -%% <code>[A1, ..., An]</code> is returned. +%% `[A1, ..., An]' is returned. %% %% @see macro/2 @@ -6309,15 +5803,13 @@ macro_arguments(Node) -> %% ===================================================================== -%% @spec abstract(Term::term()) -> syntaxTree() -%% %% @doc Returns the syntax tree corresponding to an Erlang term. -%% <code>Term</code> must be a literal term, i.e., one that can be +%% `Term' must be a literal term, i.e., one that can be %% represented as a source code literal. Thus, it may not contain a %% process identifier, port, reference, binary or function value as a %% subterm. The function recognises printable strings, in order to get a %% compact and readable representation. Evaluation fails with reason -%% <code>badarg</code> if <code>Term</code> is not a literal term. +%% `badarg' if `Term' is not a literal term. %% %% @see concrete/1 %% @see is_literal/1 @@ -6367,19 +5859,17 @@ abstract_tail(H, T) -> %% ===================================================================== -%% @spec concrete(Node::syntaxTree()) -> term() -%% %% @doc Returns the Erlang term represented by a syntax tree. Evaluation -%% fails with reason <code>badarg</code> if <code>Node</code> does not +%% fails with reason `badarg' if `Node' does not %% represent a literal term. %% -%% <p>Note: Currently, the set of syntax trees which have a concrete +%% Note: Currently, the set of syntax trees which have a concrete %% representation is larger than the set of trees which can be built -%% using the function <code>abstract/1</code>. An abstract character -%% will be concretised as an integer, while <code>abstract/1</code> does +%% using the function {@link abstract/1}. An abstract character +%% will be concretised as an integer, while {@link abstract/1} does %% not at present yield an abstract character for any input. (Use the -%% <code>char/1</code> function to explicitly create an abstract -%% character.)</p> +%% {@link char/1} function to explicitly create an abstract +%% character.) %% %% @see abstract/1 %% @see is_literal/1 @@ -6422,7 +5912,7 @@ concrete(Node) -> {value, concrete(F), []} end, [], true), B; - _ -> + _ -> erlang:error({badarg, Node}) end. @@ -6433,12 +5923,10 @@ concrete_list([]) -> %% ===================================================================== -%% @spec is_literal(Node::syntaxTree()) -> boolean() -%% -%% @doc Returns <code>true</code> if <code>Node</code> represents a -%% literal term, otherwise <code>false</code>. This function returns -%% <code>true</code> if and only if the value of -%% <code>concrete(Node)</code> is defined. +%% @doc Returns `true' if `Node' represents a +%% literal term, otherwise `false'. This function returns +%% `true' if and only if the value of +%% `concrete(Node)' is defined. %% %% @see abstract/1 %% @see concrete/1 @@ -6469,21 +5957,19 @@ is_literal(T) -> %% ===================================================================== -%% @spec revert(Tree::syntaxTree()) -> syntaxTree() -%% -%% @doc Returns an <code>erl_parse</code>-compatible representation of a -%% syntax tree, if possible. If <code>Tree</code> represents a +%% @doc Returns an `erl_parse'-compatible representation of a +%% syntax tree, if possible. If `Tree' represents a %% well-formed Erlang program or expression, the conversion should work -%% without problems. Typically, <code>is_tree/1</code> yields -%% <code>true</code> if conversion failed (i.e., the result is still an -%% abstract syntax tree), and <code>false</code> otherwise. +%% without problems. Typically, {@link is_tree/1} yields +%% `true' if conversion failed (i.e., the result is still an +%% abstract syntax tree), and `false' otherwise. %% -%% <p>The <code>is_tree/1</code> test is not completely foolproof. For a -%% few special node types (e.g. <code>arity_qualifier</code>), if such a +%% The {@link is_tree/1} test is not completely foolproof. For a +%% few special node types (e.g. `arity_qualifier'), if such a %% node occurs in a context where it is not expected, it will be left %% unchanged as a non-reverted subtree of the result. This can only -%% happen if <code>Tree</code> does not actually represent legal Erlang -%% code.</p> +%% happen if `Tree' does not actually represent legal Erlang +%% code. %% %% @see revert_forms/1 %% @see //stdlib/erl_parse @@ -6493,9 +5979,13 @@ is_literal(T) -> revert(Node) -> case is_tree(Node) of false -> - %% Just remove any wrapper. `erl_parse' nodes never contain - %% abstract syntax tree nodes as subtrees. - unwrap(Node); + %% Just remove any wrapper and copy the position. `erl_parse' + %% nodes never contain abstract syntax tree nodes as subtrees. + case unwrap(Node) of + {error, Info} -> {error, setelement(1,Info,get_pos(Node))}; + {warning, Info} -> {warning, setelement(1,Info,get_pos(Node))}; + Node1 -> setelement(2,Node1,get_pos(Node)) + end; true -> case is_leaf(Node) of true -> @@ -6615,16 +6105,12 @@ revert_root(Node) -> %% ===================================================================== -%% @spec revert_forms(Forms) -> [erl_parse()] -%% -%% Forms = syntaxTree() | [syntaxTree()] -%% %% @doc Reverts a sequence of Erlang source code forms. The sequence can -%% be given either as a <code>form_list</code> syntax tree (possibly +%% be given either as a `form_list' syntax tree (possibly %% nested), or as a list of "program form" syntax trees. If successful, -%% the corresponding flat list of <code>erl_parse</code>-compatible -%% syntax trees is returned (cf. <code>revert/1</code>). If some program -%% form could not be reverted, <code>{error, Form}</code> is thrown. +%% the corresponding flat list of `erl_parse'-compatible +%% syntax trees is returned (see {@link revert/1}). If some program +%% form could not be reverted, `{error, Form}' is thrown. %% Standalone comments in the form sequence are discarded. %% %% @see revert/1 @@ -6633,10 +6119,10 @@ revert_root(Node) -> -type forms() :: syntaxTree() | [syntaxTree()]. -%% -spec revert_forms(forms()) -> [erl_parse()]. +-spec revert_forms(forms()) -> [erl_parse()]. -revert_forms(L) when is_list(L) -> - revert_forms(form_list(L)); +revert_forms(Forms) when is_list(Forms) -> + revert_forms(form_list(Forms)); revert_forms(T) -> case type(T) of form_list -> @@ -6673,60 +6159,54 @@ revert_forms_1([]) -> %% ===================================================================== -%% @spec subtrees(Node::syntaxTree()) -> [[syntaxTree()]] -%% %% @doc Returns the grouped list of all subtrees of a syntax tree. If -%% <code>Node</code> is a leaf node (cf. <code>is_leaf/1</code>), this +%% `Node' is a leaf node (see {@link is_leaf/1}), this %% is the empty list, otherwise the result is always a nonempty list, -%% containing the lists of subtrees of <code>Node</code>, in +%% containing the lists of subtrees of `Node', in %% left-to-right order as they occur in the printed program text, and %% grouped by category. Often, each group contains only a single %% subtree. %% -%% <p>Depending on the type of <code>Node</code>, the size of some +%% Depending on the type of `Node', the size of some %% groups may be variable (e.g., the group consisting of all the %% elements of a tuple), while others always contain the same number of %% elements - usually exactly one (e.g., the group containing the %% argument expression of a case-expression). Note, however, that the %% exact structure of the returned list (for a given node type) should %% in general not be depended upon, since it might be subject to change -%% without notice.</p> +%% without notice. %% -%% <p>The function <code>subtrees/1</code> and the constructor functions -%% <code>make_tree/2</code> and <code>update_tree/2</code> can be a +%% The function {@link subtrees/1} and the constructor functions +%% {@link make_tree/2} and {@link update_tree/2} can be a %% great help if one wants to traverse a syntax tree, visiting all its %% subtrees, but treat nodes of the tree in a uniform way in most or all %% cases. Using these functions makes this simple, and also assures that %% your code is not overly sensitive to extensions of the syntax tree %% data type, because any node types not explicitly handled by your code -%% can be left to a default case.</p> +%% can be left to a default case. %% -%% <p>For example: -%% <pre> -%% postorder(F, Tree) -> +%% For example: +%% ```postorder(F, Tree) -> %% F(case subtrees(Tree) of %% [] -> Tree; %% List -> update_tree(Tree, %% [[postorder(F, Subtree) %% || Subtree <- Group] %% || Group <- List]) -%% end). -%% </pre> -%% maps the function <code>F</code> on <code>Tree</code> and all its +%% end).''' +%% maps the function `F' on `Tree' and all its %% subtrees, doing a post-order traversal of the syntax tree. (Note the -%% use of <code>update_tree/2</code> to preserve node attributes.) For a +%% use of {@link update_tree/2} to preserve node attributes.) For a %% simple function like: -%% <pre> -%% f(Node) -> +%% ```f(Node) -> %% case type(Node) of %% atom -> atom("a_" ++ atom_name(Node)); %% _ -> Node -%% end. -%% </pre> -%% the call <code>postorder(fun f/1, Tree)</code> will yield a new -%% representation of <code>Tree</code> in which all atom names have been +%% end.''' +%% the call `postorder(fun f/1, Tree)' will yield a new +%% representation of `Tree' in which all atom names have been %% extended with the prefix "a_", but nothing else (including comments, -%% annotations and line numbers) has been changed.</p> +%% annotations and line numbers) has been changed. %% %% @see make_tree/2 %% @see type/1 @@ -6896,12 +6376,9 @@ subtrees(T) -> %% ===================================================================== -%% @spec update_tree(Node::syntaxTree(), Groups::[[syntaxTree()]]) -> -%% syntaxTree() -%% %% @doc Creates a syntax tree with the same type and attributes as the -%% given tree. This is equivalent to <code>copy_attrs(Node, -%% make_tree(type(Node), Groups))</code>. +%% given tree. This is equivalent to `copy_attrs(Node, +%% make_tree(type(Node), Groups))'. %% %% @see make_tree/2 %% @see copy_attrs/2 @@ -6914,23 +6391,20 @@ update_tree(Node, Groups) -> %% ===================================================================== -%% @spec make_tree(Type::atom(), Groups::[[syntaxTree()]]) -> -%% syntaxTree() -%% %% @doc Creates a syntax tree with the given type and subtrees. -%% <code>Type</code> must be a node type name (cf. <code>type/1</code>) -%% that does not denote a leaf node type (cf. <code>is_leaf/1</code>). -%% <code>Groups</code> must be a <em>nonempty</em> list of groups of +%% `Type' must be a node type name (see {@link type/1}) +%% that does not denote a leaf node type (see {@link is_leaf/1}). +%% `Groups' must be a <em>nonempty</em> list of groups of %% syntax trees, representing the subtrees of a node of the given type, %% in left-to-right order as they would occur in the printed program -%% text, grouped by category as done by <code>subtrees/1</code>. +%% text, grouped by category as done by {@link subtrees/1}. %% -%% <p>The result of <code>copy_attrs(Node, make_tree(type(Node), -%% subtrees(Node)))</code> (cf. <code>update_tree/2</code>) represents -%% the same source code text as the original <code>Node</code>, assuming -%% that <code>subtrees(Node)</code> yields a nonempty list. However, it +%% The result of `copy_attrs(Node, make_tree(type(Node), +%% subtrees(Node)))' (see {@link update_tree/2}) represents +%% the same source code text as the original `Node', assuming +%% that `subtrees(Node)' yields a nonempty list. However, it %% does not necessarily have the same data representation as -%% <code>Node</code>.</p> +%% `Node'. %% %% @see update_tree/2 %% @see subtrees/1 @@ -6995,42 +6469,40 @@ make_tree(tuple, [E]) -> tuple(E). %% ===================================================================== -%% @spec meta(Tree::syntaxTree()) -> syntaxTree() -%% %% @doc Creates a meta-representation of a syntax tree. The result %% represents an Erlang expression "<code><em>MetaTree</em></code>" %% which, if evaluated, will yield a new syntax tree representing the -%% same source code text as <code>Tree</code> (although the actual data +%% same source code text as `Tree' (although the actual data %% representation may be different). The expression represented by -%% <code>MetaTree</code> is <em>implementation independent</em> with +%% `MetaTree' is <em>implementation independent</em> with %% regard to the data structures used by the abstract syntax tree -%% implementation. Comments attached to nodes of <code>Tree</code> will +%% implementation. Comments attached to nodes of `Tree' will %% be preserved, but other attributes are lost. %% -%% <p>Any node in <code>Tree</code> whose node type is -%% <code>variable</code> (cf. <code>type/1</code>), and whose list of -%% annotations (cf. <code>get_ann/1</code>) contains the atom -%% <code>meta_var</code>, will remain unchanged in the resulting tree, -%% except that exactly one occurrence of <code>meta_var</code> is -%% removed from its annotation list.</p> +%% Any node in `Tree' whose node type is +%% `variable' (see {@link type/1}), and whose list of +%% annotations (see {@link get_ann/1}) contains the atom +%% `meta_var', will remain unchanged in the resulting tree, +%% except that exactly one occurrence of `meta_var' is +%% removed from its annotation list. %% -%% <p>The main use of the function <code>meta/1</code> is to transform a -%% data structure <code>Tree</code>, which represents a piece of program +%% The main use of the function `meta/1' is to transform a +%% data structure `Tree', which represents a piece of program %% code, into a form that is <em>representation independent when -%% printed</em>. E.g., suppose <code>Tree</code> represents a variable -%% named "V". Then (assuming a function <code>print/1</code> for -%% printing syntax trees), evaluating <code>print(abstract(Tree))</code> -%% - simply using <code>abstract/1</code> to map the actual data +%% printed</em>. E.g., suppose `Tree' represents a variable +%% named "V". Then (assuming a function `print/1' for +%% printing syntax trees), evaluating `print(abstract(Tree))' +%% - simply using {@link abstract/1} to map the actual data %% structure onto a syntax tree representation - would output a string -%% that might look something like "<code>{tree, variable, ..., "V", -%% ...}</code>", which is obviously dependent on the implementation of +%% that might look something like "`{tree, variable, ..., "V", +%% ...}'", which is obviously dependent on the implementation of %% the abstract syntax trees. This could e.g. be useful for caching a %% syntax tree in a file. However, in some situations like in a program %% generator generator (with two "generator"), it may be unacceptable. -%% Using <code>print(meta(Tree))</code> instead would output a +%% Using `print(meta(Tree))' instead would output a %% <em>representation independent</em> syntax tree generating %% expression; in the above case, something like -%% "<code>erl_syntax:variable("V")</code>".</p> +%% "`erl_syntax:variable("V")'". %% %% @see abstract/1 %% @see type/1 @@ -7161,60 +6633,56 @@ meta_call(F, As) -> %% ===================================================================== -%% @spec tree(Type) -> syntaxTree() %% @equiv tree(Type, []) --spec tree(atom()) -> syntaxTree(). +-spec tree(atom()) -> #tree{}. tree(Type) -> tree(Type, []). %% ===================================================================== -%% @spec tree(Type::atom(), Data::term()) -> syntaxTree() -%% %% @doc <em>For special purposes only</em>. Creates an abstract syntax -%% tree node with type tag <code>Type</code> and associated data -%% <code>Data</code>. +%% tree node with type tag `Type' and associated data +%% `Data'. %% -%% <p>This function and the related <code>is_tree/1</code> and -%% <code>data/1</code> provide a uniform way to extend the set of -%% <code>erl_parse</code> node types. The associated data is any term, -%% whose format may depend on the type tag.</p> +%% This function and the related {@link is_tree/1} and +%% {@link data/1} provide a uniform way to extend the set of +%% `erl_parse' node types. The associated data is any term, +%% whose format may depend on the type tag. %% -%% <h4>Notes:</h4> +%% === Notes: === %% <ul> %% <li>Any nodes created outside of this module must have type tags %% distinct from those currently defined by this module; see -%% <code>type/1</code> for a complete list.</li> +%% {@link type/1} for a complete list.</li> %% <li>The type tag of a syntax tree node may also be used -%% as a primary tag by the <code>erl_parse</code> representation; +%% as a primary tag by the `erl_parse' representation; %% in that case, the selector functions for that node type %% <em>must</em> handle both the abstract syntax tree and the -%% <code>erl_parse</code> form. The function <code>type(T)</code> +%% `erl_parse' form. The function `type(T)' %% should return the correct type tag regardless of the -%% representation of <code>T</code>, so that the user sees no -%% difference between <code>erl_syntax</code> and -%% <code>erl_parse</code> nodes.</li> +%% representation of `T', so that the user sees no +%% difference between `erl_syntax' and +%% `erl_parse' nodes.</li> %% </ul> +%% %% @see is_tree/1 %% @see data/1 %% @see type/1 --spec tree(atom(), term()) -> syntaxTree(). +-spec tree(atom(), term()) -> #tree{}. tree(Type, Data) -> #tree{type = Type, data = Data}. %% ===================================================================== -%% @spec is_tree(Tree::syntaxTree()) -> boolean() -%% -%% @doc <em>For special purposes only</em>. Returns <code>true</code> if -%% <code>Tree</code> is an abstract syntax tree and <code>false</code> +%% @doc <em>For special purposes only</em>. Returns `true' if +%% `Tree' is an abstract syntax tree and `false' %% otherwise. %% -%% <p><em>Note</em>: this function yields <code>false</code> for all -%% "old-style" <code>erl_parse</code>-compatible "parse trees".</p> +%% <em>Note</em>: this function yields `false' for all +%% "old-style" `erl_parse'-compatible "parse trees". %% %% @see tree/2 @@ -7227,12 +6695,10 @@ is_tree(_) -> %% ===================================================================== -%% @spec data(Tree::syntaxTree()) -> term() -%% %% @doc <em>For special purposes only</em>. Returns the associated data %% of a syntax tree node. Evaluation fails with reason -%% <code>badarg</code> if <code>is_tree(Node)</code> does not yield -%% <code>true</code>. +%% `badarg' if `is_tree(Node)' does not yield +%% `true'. %% %% @see tree/2 @@ -7248,26 +6714,19 @@ data(T) -> erlang:error({badarg, T}). %% ===================================================================== -%% @spec wrap(Node::erl_parse()) -> syntaxTree() -%% -%% @type erl_parse() = erl_parse:parse_tree(). The "parse tree" -%% representation built by the Erlang standard library parser -%% <code>erl_parse</code>. This is a subset of the -%% <a href="#type-syntaxTree"><code>syntaxTree</code></a> type. -%% -%% @doc Creates a wrapper structure around an <code>erl_parse</code> +%% @doc Creates a wrapper structure around an `erl_parse' %% "parse tree". %% -%% <p>This function and the related <code>unwrap/1</code> and -%% <code>is_wrapper/1</code> provide a uniform way to attach arbitrary -%% information to an <code>erl_parse</code> tree. Some information about +%% This function and the related {@link unwrap/1} and +%% {@link is_wrapper/1} provide a uniform way to attach arbitrary +%% information to an `erl_parse' tree. Some information about %% the encapsuled tree may be cached in the wrapper, such as the node %% type. All functions on syntax trees must behave so that the user sees -%% no difference between wrapped and non-wrapped <code>erl_parse</code> +%% no difference between wrapped and non-wrapped `erl_parse' %% trees. <em>Attaching a wrapper onto another wrapper structure is an -%% error</em>.</p> +%% error</em>. -%%-spec wrap(erl_parse:parse_tree()) -> syntaxTree(). +-spec wrap(erl_parse()) -> #wrapper{}. wrap(Node) -> %% We assume that Node is an old-school `erl_parse' tree. @@ -7276,24 +6735,20 @@ wrap(Node) -> %% ===================================================================== -%% @spec unwrap(Node::syntaxTree()) -> syntaxTree() -%% -%% @doc Removes any wrapper structure, if present. If <code>Node</code> +%% @doc Removes any wrapper structure, if present. If `Node' %% is a wrapper structure, this function returns the wrapped -%% <code>erl_parse</code> tree; otherwise it returns <code>Node</code> +%% `erl_parse' tree; otherwise it returns `Node' %% itself. --spec unwrap(syntaxTree()) -> syntaxTree(). +-spec unwrap(syntaxTree()) -> #tree{} | erl_parse(). unwrap(#wrapper{tree = Node}) -> Node; unwrap(Node) -> Node. % This could also be a new-form node. %% ===================================================================== -%% @spec is_wrapper(Term::term()) -> boolean() -%% -%% @doc Returns <code>true</code> if the argument is a wrapper -%% structure, otherwise <code>false</code>. +%% @doc Returns `true' if the argument is a wrapper +%% structure, otherwise `false'. -ifndef(NO_UNUSED). -spec is_wrapper(term()) -> boolean(). |