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-rw-r--r--lib/syntax_tools/src/erl_syntax.erl208
1 files changed, 18 insertions, 190 deletions
diff --git a/lib/syntax_tools/src/erl_syntax.erl b/lib/syntax_tools/src/erl_syntax.erl
index de271d7f2f..3f2a3e05dd 100644
--- a/lib/syntax_tools/src/erl_syntax.erl
+++ b/lib/syntax_tools/src/erl_syntax.erl
@@ -254,7 +254,6 @@
receive_expr_action/1,
receive_expr_clauses/1,
receive_expr_timeout/1,
- record_access/2,
record_access/3,
record_access_argument/1,
record_access_field/1,
@@ -271,10 +270,6 @@
record_index_expr/2,
record_index_expr_field/1,
record_index_expr_type/1,
- rule/2,
- rule_arity/1,
- rule_clauses/1,
- rule_name/1,
size_qualifier/2,
size_qualifier_argument/1,
size_qualifier_body/1,
@@ -472,19 +467,16 @@
%% <td>record_field</td>
%% </tr><tr>
%% <td>record_index_expr</td>
-%% <td>rule</td>
%% <td>size_qualifier</td>
%% <td>string</td>
-%% </tr><tr>
%% <td>text</td>
+%% </tr><tr>
%% <td>try_expr</td>
%% <td>tuple</td>
%% <td>underscore</td>
-%% </tr><tr>
%% <td>variable</td>
+%% </tr><tr>
%% <td>warning_marker</td>
-%% <td></td>
-%% <td></td>
%% </tr>
%% </table></center>
%%
@@ -540,7 +532,6 @@
%% @see record_expr/2
%% @see record_field/2
%% @see record_index_expr/2
-%% @see rule/2
%% @see size_qualifier/2
%% @see string/1
%% @see text/1
@@ -607,10 +598,8 @@ type(Node) ->
{record, _, _, _, _} -> record_expr;
{record, _, _, _} -> record_expr;
{record_field, _, _, _, _} -> record_access;
- {record_field, _, _, _} -> record_access;
{record_index, _, _, _} -> record_index_expr;
{remote, _, _, _} -> module_qualifier;
- {rule, _, _, _, _} -> rule;
{'try', _, _, _, _, _} -> try_expr;
{tuple, _, _} -> tuple;
_ ->
@@ -693,10 +682,9 @@ is_leaf(Node) ->
%% <td>`comment'</td>
%% <td>`error_marker'</td>
%% <td>`eof_marker'</td>
-%% <td>`form_list'</td>
%% </tr><tr>
+%% <td>`form_list'</td>
%% <td>`function'</td>
-%% <td>`rule'</td>
%% <td>`warning_marker'</td>
%% <td>`text'</td>
%% </tr>
@@ -709,7 +697,6 @@ is_leaf(Node) ->
%% @see error_marker/1
%% @see form_list/1
%% @see function/2
-%% @see rule/2
%% @see warning_marker/1
-spec is_form(syntaxTree()) -> boolean().
@@ -722,7 +709,6 @@ is_form(Node) ->
eof_marker -> true;
error_marker -> true;
form_list -> true;
- rule -> true;
warning_marker -> true;
text -> true;
_ -> false
@@ -3480,7 +3466,6 @@ module_qualifier_body(Node) ->
%% @see function_clauses/1
%% @see function_arity/1
%% @see is_form/1
-%% @see rule/2
%% 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.
@@ -4310,49 +4295,32 @@ record_index_expr_field(Node) ->
%% =====================================================================
-%% @equiv record_access(Argument, none, Field)
-
--spec record_access(syntaxTree(), syntaxTree()) -> syntaxTree().
-
-record_access(Argument, Field) ->
- record_access(Argument, none, Field).
-
-
-%% =====================================================================
-%% @doc Creates an abstract record field access expression. If
-%% `Type' is not `none', the result represents
-%% "<code><em>Argument</em>#<em>Type</em>.<em>Field</em></code>".
-%%
-%% 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.
+%% @doc Creates an abstract record field access expression. The result
+%% represents "<code><em>Argument</em>#<em>Type</em>.<em>Field</em></code>".
%%
-%% @see record_access/2
%% @see record_access_argument/1
%% @see record_access_type/1
%% @see record_access_field/1
%% @see record_expr/3
-record(record_access, {argument :: syntaxTree(),
- type :: 'none' | syntaxTree(),
+ type :: syntaxTree(),
field :: syntaxTree()}).
%% type(Node) = record_access
%% data(Node) = #record_access{argument :: Argument, type :: Type,
%% field :: Field}
%%
-%% Argument = Field = syntaxTree()
-%% Type = none | syntaxTree()
+%% Argument = Type = Field = syntaxTree()
%%
%% `erl_parse' representation:
%%
%% {record_field, Pos, Argument, Type, Field}
-%% {record_field, Pos, Argument, Field}
%%
%% Argument = Field = erl_parse()
%% Type = atom()
--spec record_access(syntaxTree(), 'none' | syntaxTree(), syntaxTree()) ->
+-spec record_access(syntaxTree(), syntaxTree(), syntaxTree()) ->
syntaxTree().
record_access(Argument, Type, Field) ->
@@ -4365,16 +4333,11 @@ revert_record_access(Node) ->
Argument = record_access_argument(Node),
Type = record_access_type(Node),
Field = record_access_field(Node),
- if Type =:= none ->
- {record_field, Pos, Argument, Field};
- true ->
- case type(Type) of
- atom ->
- {record_field, Pos,
- Argument, concrete(Type), Field};
- _ ->
- Node
- end
+ case type(Type) of
+ atom ->
+ {record_field, Pos, Argument, concrete(Type), Field};
+ _ ->
+ Node
end.
@@ -4387,8 +4350,6 @@ revert_record_access(Node) ->
record_access_argument(Node) ->
case unwrap(Node) of
- {record_field, _, Argument, _} ->
- Argument;
{record_field, _, Argument, _, _} ->
Argument;
Node1 ->
@@ -4397,21 +4358,14 @@ record_access_argument(Node) ->
%% =====================================================================
-%% @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>",
-%% `Type' is returned.
+%% @doc Returns the type subtree of a `record_access' node.
%%
%% @see record_access/3
--spec record_access_type(syntaxTree()) -> 'none' | syntaxTree().
+-spec record_access_type(syntaxTree()) -> syntaxTree().
record_access_type(Node) ->
case unwrap(Node) of
- {record_field, _, _, _} ->
- none;
{record_field, Pos, _, Type, _} ->
set_pos(atom(Type), Pos);
Node1 ->
@@ -4428,8 +4382,6 @@ record_access_type(Node) ->
record_access_field(Node) ->
case unwrap(Node) of
- {record_field, _, _, Field} ->
- Field;
{record_field, _, _, _, Field} ->
Field;
Node1 ->
@@ -4808,117 +4760,6 @@ binary_comp_body(Node) ->
%% =====================================================================
-%% @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 `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> :-
-%% <em>B1</em>; ...; <em>Name</em>(<em>Pn1</em>, ..., <em>Pnm</em>)
-%% <em>Gn</em> :- <em>Bn</em>.</code>". Rules are source code forms.
-%%
-%% @see rule_name/1
-%% @see rule_clauses/1
-%% @see rule_arity/1
-%% @see is_form/1
-%% @see function/2
-
--record(rule, {name :: syntaxTree(), clauses :: [syntaxTree()]}).
-
-%% type(Node) = rule
-%% data(Node) = #rule{name :: Name, clauses :: Clauses}
-%%
-%% Name = syntaxTree()
-%% Clauses = [syntaxTree()]
-%%
-%% (See `function' for notes on why the arity is not stored.)
-%%
-%% `erl_parse' representation:
-%%
-%% {rule, Pos, Name, Arity, Clauses}
-%%
-%% Name = atom()
-%% Arity = integer()
-%% Clauses = [Clause] \ []
-%% Clause = {clause, ...}
-%%
-%% where the number of patterns in each clause should be equal to
-%% the integer `Arity'; see `clause' for documentation on
-%% `erl_parse' clauses.
-
--spec rule(syntaxTree(), [syntaxTree()]) -> syntaxTree().
-
-rule(Name, Clauses) ->
- tree(rule, #rule{name = Name, clauses = Clauses}).
-
-revert_rule(Node) ->
- Name = rule_name(Node),
- Clauses = [revert_clause(C) || C <- rule_clauses(Node)],
- Pos = get_pos(Node),
- case type(Name) of
- atom ->
- A = rule_arity(Node),
- {rule, Pos, concrete(Name), A, Clauses};
- _ ->
- Node
- end.
-
-
-%% =====================================================================
-%% @doc Returns the name subtree of a `rule' node.
-%%
-%% @see rule/2
-
--spec rule_name(syntaxTree()) -> syntaxTree().
-
-rule_name(Node) ->
- case unwrap(Node) of
- {rule, Pos, Name, _, _} ->
- set_pos(atom(Name), Pos);
- Node1 ->
- (data(Node1))#rule.name
- end.
-
-%% =====================================================================
-%% @doc Returns the list of clause subtrees of a `rule' node.
-%%
-%% @see rule/2
-
--spec rule_clauses(syntaxTree()) -> [syntaxTree()].
-
-rule_clauses(Node) ->
- case unwrap(Node) of
- {rule, _, _, _, Clauses} ->
- Clauses;
- Node1 ->
- (data(Node1))#rule.clauses
- end.
-
-%% =====================================================================
-%% @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.
-%%
-%% 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 `C' of type `clause' such that
-%% `clause_patterns(C)' is a nonempty list.
-%%
-%% @see rule/2
-%% @see rule_clauses/1
-%% @see clause/3
-%% @see clause_patterns/1
-
--spec rule_arity(syntaxTree()) -> arity().
-
-rule_arity(Node) ->
- %% Note that this never accesses the arity field of
- %% `erl_parse' rule nodes.
- length(clause_patterns(hd(rule_clauses(Node)))).
-
-
-%% =====================================================================
%% @doc Creates an abstract generator. The result represents
%% "<code><em>Pattern</em> &lt;- <em>Body</em></code>".
%%
@@ -6403,8 +6244,6 @@ revert_root(Node) ->
revert_record_expr(Node);
record_index_expr ->
revert_record_index_expr(Node);
- rule ->
- revert_rule(Node);
string ->
revert_string(Node);
try_expr ->
@@ -6661,15 +6500,9 @@ subtrees(T) ->
receive_expr_action(T)]
end;
record_access ->
- case record_access_type(T) of
- none ->
- [[record_access_argument(T)],
- [record_access_field(T)]];
- R ->
- [[record_access_argument(T)],
- [R],
- [record_access_field(T)]]
- end;
+ [[record_access_argument(T)],
+ [record_access_type(T)],
+ [record_access_field(T)]];
record_expr ->
case record_expr_argument(T) of
none ->
@@ -6690,8 +6523,6 @@ subtrees(T) ->
record_index_expr ->
[[record_index_expr_type(T)],
[record_index_expr_field(T)]];
- rule ->
- [[rule_name(T)], rule_clauses(T)];
size_qualifier ->
[[size_qualifier_body(T)],
[size_qualifier_argument(T)]];
@@ -6786,8 +6617,6 @@ make_tree(parentheses, [[E]]) -> parentheses(E);
make_tree(prefix_expr, [[F], [A]]) -> prefix_expr(F, A);
make_tree(receive_expr, [C]) -> receive_expr(C);
make_tree(receive_expr, [C, [E], A]) -> receive_expr(C, E, A);
-make_tree(record_access, [[E], [F]]) ->
- record_access(E, F);
make_tree(record_access, [[E], [T], [F]]) ->
record_access(E, T, F);
make_tree(record_expr, [[T], F]) -> record_expr(T, F);
@@ -6796,7 +6625,6 @@ make_tree(record_field, [[N]]) -> record_field(N);
make_tree(record_field, [[N], [E]]) -> record_field(N, E);
make_tree(record_index_expr, [[T], [F]]) ->
record_index_expr(T, F);
-make_tree(rule, [[N], C]) -> rule(N, C);
make_tree(size_qualifier, [[N], [A]]) -> size_qualifier(N, A);
make_tree(try_expr, [B, C, H, A]) -> try_expr(B, C, H, A);
make_tree(tuple, [E]) -> tuple(E).
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 18:29:35 +0000