diff options
| -rw-r--r-- | lib/syntax_tools/src/erl_prettypr.erl | 322 | ||||
| -rw-r--r-- | lib/syntax_tools/src/erl_syntax.erl | 1348 | ||||
| -rw-r--r-- | lib/syntax_tools/src/erl_syntax_lib.erl | 181 |
3 files changed, 1776 insertions, 75 deletions
diff --git a/lib/syntax_tools/src/erl_prettypr.erl b/lib/syntax_tools/src/erl_prettypr.erl index ae7811994d..9b6c5d977e 100644 --- a/lib/syntax_tools/src/erl_prettypr.erl +++ b/lib/syntax_tools/src/erl_prettypr.erl @@ -40,7 +40,7 @@ follow/3, empty/0]). -import(erl_parse, [preop_prec/1, inop_prec/1, func_prec/0, - max_prec/0]). + max_prec/0, type_inop_prec/1, type_preop_prec/1]). -define(PADDING, 2). -define(PAPER, 80). @@ -52,7 +52,8 @@ | fun((erl_syntax:syntaxTree(), _, _) -> prettypr:document()). -type clause_t() :: 'case_expr' | 'cond_expr' | 'fun_expr' | 'if_expr' | 'receive_expr' | 'try_expr' - | {'function', prettypr:document()}. + | {'function', prettypr:document()} + | 'spec'. -record(ctxt, {prec = 0 :: integer(), sub_indent = 2 :: non_neg_integer(), @@ -537,9 +538,6 @@ lay_2(Node, Ctxt) -> As = seq(erl_syntax:application_arguments(Node), floating(text(",")), reset_prec(Ctxt), fun lay/2), -%% D1 = beside(D, beside(text("("), -%% beside(par(As), -%% floating(text(")"))))), D1 = beside(D, beside(text("("), beside(par(As), floating(text(")"))))), @@ -653,7 +651,7 @@ lay_2(Node, Ctxt) -> beside(D1, beside(text(":"), D2)); %% - %% The rest is in alphabetical order + %% The rest is in alphabetical order (except map and types) %% arity_qualifier -> @@ -668,18 +666,67 @@ lay_2(Node, Ctxt) -> %% a period. If the arguments is `none', we only output the %% attribute name, without following parentheses. Ctxt1 = reset_prec(Ctxt), - N = erl_syntax:attribute_name(Node), - D = case erl_syntax:attribute_arguments(Node) of - none -> + Args = erl_syntax:attribute_arguments(Node), + N = erl_syntax:attribute_name(Node), + D = case attribute_type(Node) of + spec -> + [SpecTuple] = Args, + [FuncName, FuncTypes] = + erl_syntax:tuple_elements(SpecTuple), + Name = + case erl_syntax:type(FuncName) of + tuple -> + case erl_syntax:tuple_elements(FuncName) of + [F0, _] -> + F0; + [M0, F0, _] -> + erl_syntax:module_qualifier(M0, + F0); + _ -> + FuncName + end; + _ -> + FuncName + end, + Types = dodge_macros(FuncTypes), + D1 = lay_clauses(erl_syntax:concrete(Types), + spec, Ctxt1), + beside(follow(lay(N, Ctxt1), + lay(Name, Ctxt1), + Ctxt1#ctxt.break_indent), + D1); + type -> + [TypeTuple] = Args, + [Name, Type0, Elements] = + erl_syntax:tuple_elements(TypeTuple), + TypeName = dodge_macros(Name), + Type = dodge_macros(Type0), + As0 = dodge_macros(Elements), + As = erl_syntax:concrete(As0), + D1 = lay_type_application(TypeName, As, Ctxt1), + D2 = lay(erl_syntax:concrete(Type), Ctxt1), + beside(follow(lay(N, Ctxt1), + beside(D1, floating(text(" :: "))), + Ctxt1#ctxt.break_indent), + D2); + Tag when Tag =:= export_type; + Tag =:= optional_callbacks -> + [FuncNs] = Args, + FuncNames = erl_syntax:concrete(dodge_macros(FuncNs)), + As = unfold_function_names(FuncNames), + beside(lay(N, Ctxt1), + beside(text("("), + beside(lay(As, Ctxt1), + floating(text(")"))))); + _ when Args =:= none -> lay(N, Ctxt1); - Args -> - As = seq(Args, floating(text(",")), Ctxt1, - fun lay/2), + _ -> + D1 = par(seq(Args, floating(text(",")), Ctxt1, + fun lay/2)), beside(lay(N, Ctxt1), beside(text("("), - beside(par(As), - floating(text(")"))))) - end, + beside(D1, floating(text(")"))))) + end, beside(floating(text("-")), beside(D, floating(text(".")))); binary -> @@ -930,6 +977,16 @@ lay_2(Node, Ctxt) -> text -> text(erl_syntax:text_string(Node)); + typed_record_field -> + {_, Prec, _} = type_inop_prec('::'), + Ctxt1 = reset_prec(Ctxt), + D1 = lay(erl_syntax:typed_record_field_body(Node), Ctxt1), + D2 = lay(erl_syntax:typed_record_field_type(Node), + set_prec(Ctxt, Prec)), + D3 = par([D1, floating(text(" ::")), D2], + Ctxt1#ctxt.break_indent), + maybe_parentheses(D3, Prec, Ctxt); + try_expr -> Ctxt1 = reset_prec(Ctxt), D1 = sep(seq(erl_syntax:try_expr_body(Node), @@ -967,9 +1024,231 @@ lay_2(Node, Ctxt) -> warning_marker -> E = erl_syntax:warning_marker_info(Node), beside(text("%% WARNING: "), - lay_error_info(E, reset_prec(Ctxt))) + lay_error_info(E, reset_prec(Ctxt))); + + %% + %% Types + %% + + annotated_type -> + {_, Prec, _} = type_inop_prec('::'), + D1 = lay(erl_syntax:annotated_type_name(Node), + reset_prec(Ctxt)), + D2 = lay(erl_syntax:annotated_type_body(Node), + set_prec(Ctxt, Prec)), + D3 = follow(beside(D1, floating(text(" ::"))), D2, + Ctxt#ctxt.break_indent), + maybe_parentheses(D3, Prec, Ctxt); + + type_application -> + Name = erl_syntax:type_application_name(Node), + Arguments = erl_syntax:type_application_arguments(Node), + %% Prefer shorthand notation. + case erl_syntax_lib:analyze_type_application(Node) of + {nil, 0} -> + text("[]"); + {list, 1} -> + [A] = Arguments, + D1 = lay(A, reset_prec(Ctxt)), + beside(text("["), beside(D1, text("]"))); + {nonempty_list, 1} -> + [A] = Arguments, + D1 = lay(A, reset_prec(Ctxt)), + beside(text("["), beside(D1, text(", ...]"))); + _ -> + lay_type_application(Name, Arguments, Ctxt) + end; + + bitstring_type -> + Ctxt1 = set_prec(Ctxt, max_prec()), + M = erl_syntax:bitstring_type_m(Node), + N = erl_syntax:bitstring_type_n(Node), + D1 = [beside(text("_:"), lay(M, Ctxt1)) || + (erl_syntax:type(M) =/= integer orelse + erl_syntax:integer_value(M) =/= 0)], + D2 = [beside(text("_:_*"), lay(N, Ctxt1)) || + (erl_syntax:type(N) =/= integer orelse + erl_syntax:integer_value(N) =/= 0)], + F = fun(D, _) -> D end, + D = seq(D1 ++ D2, floating(text(",")), Ctxt1, F), + beside(floating(text("<<")), + beside(par(D), floating(text(">>")))); + + fun_type -> + text("fun()"); + + constrained_function_type -> + Ctxt1 = reset_prec(Ctxt), + D1 = lay(erl_syntax:constrained_function_type_body(Node), + Ctxt1), + D2 = lay(erl_syntax:constrained_function_type_argument(Node), + Ctxt1), + beside(D1, + beside(floating(text(" when ")), D2)); + + function_type -> + {Before, After} = case Ctxt#ctxt.clause of + spec -> + {"", ""}; + _ -> + {"fun(", ")"} + end, + Ctxt1 = reset_prec(Ctxt), + D1 = case erl_syntax:function_type_arguments(Node) of + any_arity -> + text("(...)"); + Arguments -> + As = seq(Arguments, + floating(text(",")), Ctxt1, + fun lay/2), + beside(text("("), + beside(par(As), + floating(text(")")))) + end, + D2 = lay(erl_syntax:function_type_return(Node), Ctxt1), + beside(floating(text(Before)), + beside(D1, + beside(floating(text(" -> ")), + beside(D2, floating(text(After)))))); + + constraint -> + Name = erl_syntax:constraint_argument(Node), + Args = erl_syntax:constraint_body(Node), + case is_subtype(Name, Args) of + true -> + [Var, Type] = Args, + {PrecL, Prec, PrecR} = type_inop_prec('::'), + D1 = lay(Var, set_prec(Ctxt, PrecL)), + D2 = lay(Type, set_prec(Ctxt, PrecR)), + D3 = follow(beside(D1, floating(text(" ::"))), D2, + Ctxt#ctxt.break_indent), + maybe_parentheses(D3, Prec, Ctxt); + false -> + lay_type_application(Name, Args, Ctxt) + end; + + map_type -> + case erl_syntax:map_type_fields(Node) of + any_size -> + text("map()"); + Fs -> + {Prec, _PrecR} = type_preop_prec('#'), + Es = seq(Fs, + floating(text(",")), reset_prec(Ctxt), + fun lay/2), + D = beside(floating(text("#{")), + beside(par(Es), + floating(text("}")))), + maybe_parentheses(D, Prec, Ctxt) + end; + + map_type_pair -> + Ctxt1 = reset_prec(Ctxt), + D1 = lay(erl_syntax:map_type_pair_key(Node), Ctxt1), + D2 = lay(erl_syntax:map_type_pair_value(Node), Ctxt1), + par([D1, floating(text("=>")), D2], Ctxt1#ctxt.break_indent); + + integer_range_type -> + {PrecL, Prec, PrecR} = type_inop_prec('..'), + D1 = lay(erl_syntax:integer_range_type_low(Node), + set_prec(Ctxt, PrecL)), + D2 = lay(erl_syntax:integer_range_type_high(Node), + set_prec(Ctxt, PrecR)), + D3 = beside(D1, beside(text(".."), D2)), + maybe_parentheses(D3, Prec, Ctxt); + + record_type -> + {Prec, _PrecR} = type_preop_prec('#'), + D1 = beside(text("#"), + lay(erl_syntax:record_type_name(Node), + reset_prec(Ctxt))), + Es = seq(erl_syntax:record_type_fields(Node), + floating(text(",")), reset_prec(Ctxt), + fun lay/2), + D2 = beside(D1, + beside(text("{"), + beside(par(Es), + floating(text("}"))))), + maybe_parentheses(D2, Prec, Ctxt); + + record_type_field -> + Ctxt1 = reset_prec(Ctxt), + D1 = lay(erl_syntax:record_type_field_name(Node), Ctxt1), + D2 = lay(erl_syntax:record_type_field_type(Node), Ctxt1), + par([D1, floating(text("::")), D2], Ctxt1#ctxt.break_indent); + + tuple_type -> + case erl_syntax:tuple_type_elements(Node) of + any_size -> + text("tuple()"); + Elements -> + Es = seq(Elements, + floating(text(",")), reset_prec(Ctxt), + fun lay/2), + beside(floating(text("{")), + beside(par(Es), floating(text("}")))) + end; + + type_union -> + {_, Prec, PrecR} = type_inop_prec('|'), + Es = par(seq(erl_syntax:type_union_types(Node), + floating(text(" |")), set_prec(Ctxt, PrecR), + fun lay/2)), + maybe_parentheses(Es, Prec, Ctxt); + + user_type_application -> + lay_type_application(erl_syntax:user_type_application_name(Node), + erl_syntax:user_type_application_arguments(Node), + Ctxt) + + end. + +attribute_type(Node) -> + N = erl_syntax:attribute_name(Node), + case catch erl_syntax:concrete(N) of + opaque -> + type; + spec -> + spec; + callback -> + spec; + type -> + type; + export_type -> + export_type; + optional_callbacks -> + optional_callbacks; + _ -> + N end. +is_subtype(Name, [Var, _]) -> + (erl_syntax:is_atom(Name, is_subtype) andalso + erl_syntax:type(Var) =:= variable); +is_subtype(_, _) -> false. + +unfold_function_names(Ns) -> + F = fun ({Atom, Arity}) -> + erl_syntax:arity_qualifier(erl_syntax:atom(Atom), + erl_syntax:integer(Arity)) + end, + erl_syntax:list([F(N) || N <- Ns]). + +%% Macros are not handled well. +dodge_macros(Type) -> + F = fun (T) -> + case erl_syntax:type(T) of + macro -> + Var = erl_syntax:macro_name(T), + VarName0 = erl_syntax:variable_name(Var), + VarName = list_to_atom("?"++atom_to_list(VarName0)), + Atom = erl_syntax:atom(VarName), + Atom; + _ -> T + end + end, + erl_syntax_lib:map(F, Type). + lay_parentheses(D, _Ctxt) -> beside(floating(text("(")), beside(D, floating(text(")")))). @@ -1118,6 +1397,17 @@ lay_error_info(T, Ctxt) -> lay_concrete(T, Ctxt) -> lay(erl_syntax:abstract(T), Ctxt). +lay_type_application(Name, Arguments, Ctxt) -> + {PrecL, Prec} = func_prec(), % + D1 = lay(Name, set_prec(Ctxt, PrecL)), + As = seq(Arguments, + floating(text(",")), reset_prec(Ctxt), + fun lay/2), + D = beside(D1, beside(text("("), + beside(par(As), + floating(text(")"))))), + maybe_parentheses(D, Prec, Ctxt). + seq([H | T], Separator, Ctxt, Fun) -> case T of [] -> diff --git a/lib/syntax_tools/src/erl_syntax.erl b/lib/syntax_tools/src/erl_syntax.erl index 97b5797b06..8ca4a8e727 100644 --- a/lib/syntax_tools/src/erl_syntax.erl +++ b/lib/syntax_tools/src/erl_syntax.erl @@ -120,6 +120,9 @@ normalize_list/1, compact_list/1, + annotated_type/2, + annotated_type_name/1, + annotated_type_body/1, application/2, application/3, application_arguments/1, @@ -150,6 +153,9 @@ binary_generator/2, binary_generator_body/1, binary_generator_pattern/1, + bitstring_type/2, + bitstring_type_m/1, + bitstring_type_n/1, block_expr/1, block_expr_body/1, case_expr/2, @@ -175,6 +181,12 @@ cond_expr_clauses/1, conjunction/1, conjunction_body/1, + constrained_function_type/2, + constrained_function_type_body/1, + constrained_function_type_argument/1, + constraint/2, + constraint_argument/1, + constraint_body/1, disjunction/1, disjunction_body/1, eof_marker/0, @@ -188,10 +200,15 @@ fun_expr/1, fun_expr_arity/1, fun_expr_clauses/1, + fun_type/0, function/2, function_arity/1, function_clauses/1, function_name/1, + function_type/1, + function_type/2, + function_type_arguments/1, + function_type_return/1, generator/2, generator_body/1, generator_pattern/1, @@ -209,6 +226,9 @@ is_integer/2, integer_value/1, integer_literal/1, + integer_range_type/2, + integer_range_type_low/1, + integer_range_type_high/1, list/1, list/2, list_comp/2, @@ -230,6 +250,12 @@ map_field_exact/2, map_field_exact_name/1, map_field_exact_value/1, + map_type/0, + map_type/1, + map_type_fields/1, + map_type_pair/2, + map_type_pair_key/1, + map_type_pair_value/1, match_expr/2, match_expr_body/1, match_expr_pattern/1, @@ -270,6 +296,12 @@ record_index_expr/2, record_index_expr_field/1, record_index_expr_type/1, + record_type/2, + record_type_name/1, + record_type_fields/1, + record_type_field/2, + record_type_field_name/1, + record_type_field_type/1, size_qualifier/2, size_qualifier_argument/1, size_qualifier_body/1, @@ -288,6 +320,18 @@ try_expr_clauses/1, try_expr_handlers/1, try_expr_after/1, + tuple_type/0, + tuple_type/1, + tuple_type_elements/1, + type_application/2, + type_application/3, + type_application_name/1, + type_application_arguments/1, + type_union/1, + type_union_types/1, + typed_record_field/2, + typed_record_field_body/1, + typed_record_field_type/1, class_qualifier/2, class_qualifier_argument/1, class_qualifier_body/1, @@ -295,6 +339,9 @@ tuple_elements/1, tuple_size/1, underscore/0, + user_type_application/2, + user_type_application_name/1, + user_type_application_arguments/1, variable/1, variable_name/1, variable_literal/1, @@ -412,23 +459,28 @@ %% <center><table border="1"> %% <tr> %% <td>application</td> +%% <td>annotated_type</td> %% <td>arity_qualifier</td> %% <td>atom</td> -%% <td>attribute</td> %% </tr><tr> +%% <td>attribute</td> %% <td>binary</td> %% <td>binary_field</td> +%% <td>bitstring_type</td> +%% </tr><tr> %% <td>block_expr</td> %% <td>case_expr</td> -%% </tr><tr> %% <td>catch_expr</td> %% <td>char</td> +%% </tr><tr> %% <td>class_qualifier</td> %% <td>clause</td> -%% </tr><tr> %% <td>comment</td> %% <td>cond_expr</td> +%% </tr><tr> %% <td>conjunction</td> +%% <td>constrained_function_type</td> +%% <td>constraint</td> %% <td>disjunction</td> %% </tr><tr> %% <td>eof_marker</td> @@ -437,43 +489,57 @@ %% <td>form_list</td> %% </tr><tr> %% <td>fun_expr</td> +%% <td>fun_type</td> %% <td>function</td> +%% <td>function_type</td> +%% </tr><tr> %% <td>generator</td> %% <td>if_expr</td> -%% </tr><tr> %% <td>implicit_fun</td> %% <td>infix_expr</td> +%% </tr><tr> %% <td>integer</td> +%% <td>integer_range_type</td> %% <td>list</td> -%% </tr><tr> %% <td>list_comp</td> +%% </tr><tr> %% <td>macro</td> %% <td>map_expr</td> %% <td>map_field_assoc</td> -%% </tr><tr> %% <td>map_field_exact</td> +%% </tr><tr> +%% <td>map_type</td> +%% <td>map_type_pair</td> %% <td>match_expr</td> %% <td>module_qualifier</td> -%% <td>named_fun_expr</td> %% </tr><tr> +%% <td>named_fun_expr</td> %% <td>nil</td> %% <td>operator</td> %% <td>parentheses</td> -%% <td>prefix_expr</td> %% </tr><tr> +%% <td>prefix_expr</td> %% <td>receive_expr</td> %% <td>record_access</td> %% <td>record_expr</td> -%% <td>record_field</td> %% </tr><tr> +%% <td>record_field</td> %% <td>record_index_expr</td> +%% <td>record_type</td> +%% <td>record_type_field</td> +%% </tr><tr> %% <td>size_qualifier</td> %% <td>string</td> %% <td>text</td> -%% </tr><tr> %% <td>try_expr</td> +%% </tr><tr> %% <td>tuple</td> +%% <td>tuple_type</td> +%% <td>typed_record_field</td> +%% <td>type_application</td> +%% <td>type_union</td> %% <td>underscore</td> +%% <td>user_type_application</td> %% <td>variable</td> %% </tr><tr> %% <td>warning_marker</td> @@ -487,12 +553,14 @@ %% always have the same name as the node type itself. %% %% @see tree/2 +%% @see annotated_type/2 %% @see application/3 %% @see arity_qualifier/2 %% @see atom/1 %% @see attribute/2 %% @see binary/1 %% @see binary_field/2 +%% @see bitstring_type/2 %% @see block_expr/1 %% @see case_expr/2 %% @see catch_expr/1 @@ -502,24 +570,33 @@ %% @see comment/2 %% @see cond_expr/1 %% @see conjunction/1 +%% @see constrained_function_type/2 +%% @see constraint/2 %% @see disjunction/1 %% @see eof_marker/0 %% @see error_marker/1 %% @see float/1 %% @see form_list/1 %% @see fun_expr/1 +%% @see fun_type/0 %% @see function/2 +%% @see function_type/1 +%% @see function_type/2 %% @see generator/2 %% @see if_expr/1 %% @see implicit_fun/2 %% @see infix_expr/3 %% @see integer/1 +%% @see integer_range_type/2 %% @see list/2 %% @see list_comp/2 %% @see macro/2 %% @see map_expr/2 %% @see map_field_assoc/2 %% @see map_field_exact/2 +%% @see map_type/0 +%% @see map_type/1 +%% @see map_type_pair/2 %% @see match_expr/2 %% @see module_qualifier/2 %% @see named_fun_expr/2 @@ -532,12 +609,20 @@ %% @see record_expr/2 %% @see record_field/2 %% @see record_index_expr/2 +%% @see record_type/2 +%% @see record_type_field/2 %% @see size_qualifier/2 %% @see string/1 %% @see text/1 %% @see try_expr/3 %% @see tuple/1 +%% @see tuple_type/0 +%% @see tuple_type/1 +%% @see typed_record_field/2 +%% @see type_application/2 +%% @see type_union/1 %% @see underscore/0 +%% @see user_type_application/2 %% @see variable/1 %% @see warning_marker/1 @@ -602,6 +687,24 @@ type(Node) -> {remote, _, _, _} -> module_qualifier; {'try', _, _, _, _, _} -> try_expr; {tuple, _, _} -> tuple; + + %% Type types + {ann_type, _, _} -> annotated_type; + {remote_type, _, _} -> type_application; + {type, _, binary, [_, _]} -> bitstring_type; + {type, _, bounded_fun, [_, _]} -> constrained_function_type; + {type, _, constraint, [_, _]} -> constraint; + {type, _, 'fun', []} -> fun_type; + {type, _, 'fun', [_, _]} -> function_type; + {type, _, map, _} -> map_type; + {type, _, map_field_assoc, _} -> map_type_pair; + {type, _, record, _} -> record_type; + {type, _, field_type, _} -> record_type_field; + {type, _, range, _} -> integer_range_type; + {type, _, tuple, _} -> tuple_type; + {type, _, union, _} -> type_union; + {type, _, _, _} -> type_application; + {user_type, _, _, _} -> user_type_application; _ -> erlang:error({badarg, Node}) end. @@ -621,6 +724,7 @@ type(Node) -> %% <td>`error_marker'</td> %% </tr><tr> %% <td>`float'</td> +%% <td>`fun_type'</td> %% <td>`integer'</td> %% <td>`nil'</td> %% <td>`operator'</td> @@ -633,7 +737,13 @@ type(Node) -> %% </tr> %% </table></center> %% +%% A node of type `map_expr' is a leaf node if and only if it has no +%% argument and no fields. +%% A node of type `map_type' is a leaf node if and only if it has no +%% fields (`any_size'). %% A node of type `tuple' is a leaf node if and only if its arity is zero. +%% A node of type `tuple_type' is a leaf node if and only if it has no +%% elements (`any_size'). %% %% Note: not all literals are leaf nodes, and vice versa. E.g., %% tuples with nonzero arity and nonempty lists may be literals, but are @@ -653,6 +763,7 @@ is_leaf(Node) -> eof_marker -> true; error_marker -> true; float -> true; + fun_type -> true; integer -> true; nil -> true; operator -> true; % nonstandard type @@ -661,7 +772,9 @@ is_leaf(Node) -> map_expr -> map_expr_fields(Node) =:= [] andalso map_expr_argument(Node) =:= none; + map_type -> map_type_fields(Node) =:= any_size; tuple -> tuple_elements(Node) =:= []; + tuple_type -> tuple_type_elements(Node) =:= any_size; underscore -> true; variable -> true; warning_marker -> true; @@ -3114,6 +3227,39 @@ attribute(Name) -> %% `Imports' is `{Module, [{A1, N1}, ..., {Ak, Nk}]}', or %% `-import(A1.....An).', if `Imports' is `[A1, ..., An]'. %% +%% {attribute, Pos, export_type, ExportedTypes} +%% +%% ExportedTypes = [{atom(), integer()}] +%% +%% Representing `-export_type([N1/A1, ..., Nk/Ak]).', +%% if `ExportedTypes' is `[{N1, A1}, ..., {Nk, Ak}]'. +%% +%% {attribute, Pos, optional_callbacks, OptionalCallbacks} +%% +%% OptionalCallbacks = [{atom(), integer()}] +%% +%% Representing `-optional_callbacks([A1/N1, ..., Ak/Nk]).', +%% if `OptionalCallbacks' is `[{A1, N1}, ..., {Ak, Nk}]'. +%% +%% {attribute, Pos, SpecTag, {FuncSpec, FuncType}} +%% +%% SpecTag = spec | callback +%% FuncSpec = {module(), atom(), arity()} | {atom(), arity()} +%% FuncType = a (possibly constrained) function type +%% +%% Representing `-SpecTag M:F/A Ft1; ...; Ftk.' or +%% `-SpecTag F/A Ft1; ...; Ftk.', if `FuncTypes' is +%% `[Ft1, ..., Ftk]'. +%% +%% {attribute, Pos, TypeTag, {Name, Type, Parameters}} +%% +%% TypeTag = type | opaque +%% Type = a type +%% Parameters = [Variable] +%% +%% Representing `-TypeTag Name(V1, ..., Vk) :: Type .' +%% if `Parameters' is `[V1, ..., Vk]'. +%% %% {attribute, Pos, file, Position} %% %% Position = {filename(), integer()} @@ -3125,13 +3271,19 @@ attribute(Name) -> %% %% Info = {Name, [Entries]} %% Name = atom() -%% Entries = {record_field, Pos, atom()} -%% | {record_field, Pos, atom(), erl_parse()} %% -%% Representing `-record(Name, {<F1>, ..., <Fn>}).', if `Info' is +%% Entries = UntypedEntries +%% | {typed_record_field, UntypedEntries, Type} +%% UntypedEntries = {record_field, Pos, atom()} +%% | {record_field, Pos, atom(), erl_parse()} +%% +%% Representing `-record(Name, {<F1>, ..., <Fn>}).', if `Info' is %% `{Name, [D1, ..., D1]}', where each `Fi' is either `Ai = <Ei>', %% if the corresponding `Di' is `{record_field, Pos, Ai, Ei}', or -%% otherwise simply `Ai', if `Di' is `{record_field, Pos, Ai}'. +%% otherwise simply `Ai', if `Di' is `{record_field, Pos, Ai}', or +%% `Ai = <Ei> :: <Ti>', if `Di' is `{typed_record_field, +%% {record_field, Pos, Ai, Ei}, Ti}', or `Ai :: <Ti>', if `Di' is +%% `{typed_record_field, {record_field, Pos, Ai}, Ti}'. %% %% {attribute, L, Name, Term} %% @@ -3309,11 +3461,6 @@ attribute_arguments(Node) -> [set_pos( list(unfold_function_names(Data, Pos)), Pos)]; - optional_callbacks -> - D = try list(unfold_function_names(Data, Pos)) - catch _:_ -> abstract(Data) - end, - [set_pos(D, Pos)]; import -> {Module, Imports} = Data, [set_pos(atom(Module), Pos), @@ -4183,7 +4330,8 @@ record_field(Name) -> %% type(Node) = record_field %% data(Node) = #record_field{name :: Name, value :: Value} %% -%% Name = Value = syntaxTree() +%% Name = syntaxTree() +%% Value = none | syntaxTree() -spec record_field(syntaxTree(), 'none' | syntaxTree()) -> syntaxTree(). @@ -4568,7 +4716,7 @@ application(Module, Name, Arguments) -> %% %% `erl_parse' representation: %% -%% {call, Pos, Fun, Args} +%% {call, Pos, Operator, Args} %% %% Operator = erl_parse() %% Arguments = [erl_parse()] @@ -4623,6 +4771,1045 @@ application_arguments(Node) -> (data(Node1))#application.arguments end. +%% ===================================================================== +%% @doc Creates an abstract annotated type expression. The result +%% represents "<code><em>Name</em> :: <em>Type</em></code>". +%% +%% @see annotated_type_name/1 +%% @see annotated_type_body/1 + +-record(annotated_type, {name :: syntaxTree(), body :: syntaxTree()}). + +%% type(Node) = annotated_type +%% data(Node) = #annotated_type{name :: Name, +%% body :: Type} +%% +%% Name = syntaxTree() +%% Type = syntaxTree() +%% +%% `erl_parse' representation: +%% +%% {ann_type, Pos, [Name, Type]} +%% +%% Name = erl_parse() +%% Type = erl_parse() + +-spec annotated_type(syntaxTree(), syntaxTree()) -> syntaxTree(). + +annotated_type(Name, Type) -> + tree(annotated_type, #annotated_type{name = Name, body = Type}). + +revert_annotated_type(Node) -> + Pos = get_pos(Node), + Name = annotated_type_name(Node), + Type = annotated_type_body(Node), + {ann_type, Pos, [Name, Type]}. + + +%% ===================================================================== +%% @doc Returns the name subtree of an `annotated_type' node. +%% +%% @see annotated_type/2 + +-spec annotated_type_name(syntaxTree()) -> syntaxTree(). + +annotated_type_name(Node) -> + case unwrap(Node) of + {ann_type, _, [Name, _]} -> + Name; + Node1 -> + (data(Node1))#annotated_type.name + end. + + +%% ===================================================================== +%% @doc Returns the type subtrees of an `annotated_type' node. +%% +%% @see annotated_type/2 + +-spec annotated_type_body(syntaxTree()) -> syntaxTree(). + +annotated_type_body(Node) -> + case unwrap(Node) of + {ann_type, _, [_, Type]} -> + Type; + Node1 -> + (data(Node1))#annotated_type.body + end. + + +%% ===================================================================== +%% @doc Creates an abstract fun of any type. The result represents +%% "<code>fun()</code>". + +%% type(Node) = fun_type +%% +%% `erl_parse' representation: +%% +%% {type, Pos, 'fun', []} + +-spec fun_type() -> syntaxTree(). + +fun_type() -> + tree(fun_type). + +revert_fun_type(Node) -> + Pos = get_pos(Node), + {type, Pos, 'fun', []}. + + +%% ===================================================================== +%% @doc Creates an abstract type application expression. If +%% `Module' is `none', this is call is equivalent +%% to `type_application(TypeName, Arguments)', otherwise it is +%% equivalent to `type_application(module_qualifier(Module, TypeName), +%% Arguments)'. +%% +%% (This is a utility function.) +%% +%% @see type_application/2 +%% @see module_qualifier/2 + +-spec type_application('none' | syntaxTree(), syntaxTree(), [syntaxTree()]) -> + syntaxTree(). + +type_application(none, TypeName, Arguments) -> + type_application(TypeName, Arguments); +type_application(Module, TypeName, Arguments) -> + type_application(module_qualifier(Module, TypeName), Arguments). + + +%% ===================================================================== +%% @doc Creates an abstract type application expression. If `Arguments' is +%% `[T1, ..., Tn]', the result represents +%% "<code><em>TypeName</em>(<em>T1</em>, ...<em>Tn</em>)</code>". +%% +%% @see user_type_application/2 +%% @see type_application/3 +%% @see type_application_name/1 +%% @see type_application_arguments/1 + +-record(type_application, {type_name :: syntaxTree(), + arguments :: [syntaxTree()]}). + +%% type(Node) = type_application +%% data(Node) = #type_application{type_name :: TypeName, +%% arguments :: Arguments} +%% +%% TypeName = syntaxTree() +%% Arguments = [syntaxTree()] +%% +%% `erl_parse' representation: +%% +%% {remote, Pos, [Module, Name, Arguments]} | +%% {type, Pos, Name, Arguments} +%% +%% Module = erl_parse() +%% Name = atom() +%% Arguments = [erl_parse()] + +-spec type_application(syntaxTree(), [syntaxTree()]) -> syntaxTree(). + +type_application(TypeName, Arguments) -> + tree(type_application, + #type_application{type_name = TypeName, arguments = Arguments}). + +revert_type_application(Node) -> + Pos = get_pos(Node), + TypeName = type_application_name(Node), + Arguments = type_application_arguments(Node), + case type(TypeName) of + module_qualifier -> + Module = module_qualifier_argument(TypeName), + Name = module_qualifier_body(TypeName), + {remote_type, Pos, [Module, Name, Arguments]}; + atom -> + {type, Pos, atom_value(TypeName), Arguments} + end. + + +%% ===================================================================== +%% @doc Returns the type name subtree of a `type_application' node. +%% +%% @see type_application/2 + +-spec type_application_name(syntaxTree()) -> syntaxTree(). + +type_application_name(Node) -> + case unwrap(Node) of + {remote_type, _, [Module, Name, _]} -> + module_qualifier(Module, Name); + {type, Pos, Name, _} -> + set_pos(atom(Name), Pos); + Node1 -> + (data(Node1))#type_application.type_name + end. + + +%% ===================================================================== +%% @doc Returns the arguments subtrees of a `type_application' node. +%% +%% @see type_application/2 + +-spec type_application_arguments(syntaxTree()) -> [syntaxTree()]. + +type_application_arguments(Node) -> + case unwrap(Node) of + {remote_type, _, [_, _, Arguments]} -> + Arguments; + {type, _, _, Arguments} -> + Arguments; + Node1 -> + (data(Node1))#type_application.arguments + end. + + +%% ===================================================================== +%% @doc Creates an abstract bitstring type. The result represents +%% "<code><em><<_:M, _:_*N>></em></code>". +%% +%% @see bitstring_type_m/1 +%% @see bitstring_type_n/1 + +-record(bitstring_type, {m :: syntaxTree(), n :: syntaxTree()}). + +%% type(Node) = bitstring_type +%% data(Node) = #bitstring_type{m :: M, n :: N} +%% +%% M = syntaxTree() +%% N = syntaxTree() +%% + +-spec bitstring_type(syntaxTree(), syntaxTree()) -> syntaxTree(). + +bitstring_type(M, N) -> + tree(bitstring_type, #bitstring_type{m = M, n =N}). + +revert_bitstring_type(Node) -> + Pos = get_pos(Node), + M = bitstring_type_m(Node), + N = bitstring_type_n(Node), + {type, Pos, binary, [M, N]}. + +%% ===================================================================== +%% @doc Returns the number of start bits, `M', of a `bitstring_type' node. +%% +%% @see bitstring_type/2 + +-spec bitstring_type_m(syntaxTree()) -> syntaxTree(). + +bitstring_type_m(Node) -> + case unwrap(Node) of + {type, _, binary, [M, _]} -> + M; + Node1 -> + (data(Node1))#bitstring_type.m + end. + +%% ===================================================================== +%% @doc Returns the segment size, `N', of a `bitstring_type' node. +%% +%% @see bitstring_type/2 + +-spec bitstring_type_n(syntaxTree()) -> syntaxTree(). + +bitstring_type_n(Node) -> + case unwrap(Node) of + {type, _, binary, [_, N]} -> + N; + Node1 -> + (data(Node1))#bitstring_type.n + end. + + +%% ===================================================================== +%% @doc Creates an abstract constrained function type. +%% If `FunctionConstraint' is `[C1, ..., Cn]', the result represents +%% "<code><em>FunctionType</em> when <em>C1</em>, ...<em>Cn</em></code>". +%% +%% @see constrained_function_type_body/1 +%% @see constrained_function_type_argument/1 + +-record(constrained_function_type, {body :: syntaxTree(), + argument :: syntaxTree()}). + +%% type(Node) = constrained_function_type +%% data(Node) = #constrained_function_type{body :: FunctionType, +%% argument :: FunctionConstraint} +%% +%% FunctionType = syntaxTree() +%% FunctionConstraint = syntaxTree() +%% +%% `erl_parse' representation: +%% +%% {type, Pos, bounded_fun, [FunctionType, FunctionConstraint]} +%% +%% FunctionType = erl_parse() +%% FunctionConstraint = [erl_parse()] + +-spec constrained_function_type(syntaxTree(), [syntaxTree()]) -> syntaxTree(). + +constrained_function_type(FunctionType, FunctionConstraint) -> + Conj = conjunction(FunctionConstraint), + tree(constrained_function_type, + #constrained_function_type{body = FunctionType, + argument = Conj}). + +revert_constrained_function_type(Node) -> + Pos = get_pos(Node), + FunctionType = constrained_function_type_body(Node), + FunctionConstraint = + conjunction_body(constrained_function_type_argument(Node)), + {type, Pos, bounded_fun, [FunctionType, FunctionConstraint]}. + + +%% ===================================================================== +%% @doc Returns the function type subtree of a +%% `constrained_function_type' node. +%% +%% @see constrained_function_type/2 + +-spec constrained_function_type_body(syntaxTree()) -> syntaxTree(). + +constrained_function_type_body(Node) -> + case unwrap(Node) of + {type, _, bounded_fun, [FunctionType, _]} -> + FunctionType; + Node1 -> + (data(Node1))#constrained_function_type.body + end. + +%% ===================================================================== +%% @doc Returns the function constraint subtree of a +%% `constrained_function_type' node. +%% +%% @see constrained_function_type/2 + +-spec constrained_function_type_argument(syntaxTree()) -> syntaxTree(). + +constrained_function_type_argument(Node) -> + case unwrap(Node) of + {type, _, bounded_fun, [_, FunctionConstraint]} -> + conjunction(FunctionConstraint); + Node1 -> + (data(Node1))#constrained_function_type.argument + end. + + +%% ===================================================================== +%% @equiv function_type(any_arity, Type) + +function_type(Type) -> + function_type(any_arity, Type). + +%% ===================================================================== +%% @doc Creates an abstract function type. If `Arguments' is +%% `[T1, ..., Tn]', then if it occurs within a function +%% specification, the result represents +%% "<code>(<em>T1</em>, ...<em>Tn</em>) -> <em>Return</em></code>"; otherwise +%% it represents +%% "<code>fun((<em>T1</em>, ...<em>Tn</em>) -> <em>Return</em>)</code>". +%% If `Arguments' is `any_arity', it represents +%% "<code>fun((...) -> <em>Return</em>)</code>". +%% +%% Note that the `erl_parse' representation is identical for +%% "<code><em>FunctionType</em></code>" and +%% "<code>fun(<em>FunctionType</em>)</code>". +%% +%% @see function_type_arguments/1 +%% @see function_type_return/1 + +-record(function_type, {arguments :: any_arity | [syntaxTree()], + return :: syntaxTree()}). + +%% type(Node) = function_type +%% data(Node) = #function_type{arguments :: any | Arguments, +%% return :: Type} +%% +%% Arguments = [syntaxTree()] +%% Type = syntaxTree() +%% +%% `erl_parse' representation: +%% +%% {type, Pos, 'fun', [{type, Pos, product, Arguments}, Type]} +%% {type, Pos, 'fun', [{type, Pos, any}, Type]} +%% +%% Arguments = [erl_parse()] +%% Type = erl_parse() + +-spec function_type('any_arity' | syntaxTree(), syntaxTree()) -> syntaxTree(). + +function_type(Arguments, Return) -> + tree(function_type, + #function_type{arguments = Arguments, return = Return}). + +revert_function_type(Node) -> + Pos = get_pos(Node), + Type = function_type_return(Node), + case function_type_arguments(Node) of + any_arity -> + {type, Pos, 'fun', [{type, Pos, any}, Type]}; + Arguments -> + {type, Pos, 'fun', [{type, Pos, product, Arguments}, Type]} + end. + + +%% ===================================================================== +%% @doc Returns the argument types subtrees of a `function_type' node. +%% If `Node' represents "<code>fun((...) -> <em>Return</em>)</code>", +%% `any_arity' is returned; otherwise, if `Node' represents +%% "<code>(<em>T1</em>, ...<em>Tn</em>) -> <em>Return</em></code>" or +%% "<code>fun((<em>T1</em>, ...<em>Tn</em>) -> <em>Return</em>)</code>", +%% `[T1, ..., Tn]' is returned. + +%% +%% @see function_type/1 +%% @see function_type/2 + +-spec function_type_arguments(syntaxTree()) -> any_arity | syntaxTree(). + +function_type_arguments(Node) -> + case unwrap(Node) of + {type, _, 'fun', [{type, _, any}, _]} -> + any_arity; + {type, _, 'fun', [{type, _, product, Arguments}, _]} -> + Arguments; + Node1 -> + (data(Node1))#function_type.arguments + end. + +%% ===================================================================== +%% @doc Returns the return type subtrees of a `function_type' node. +%% +%% @see function_type/1 +%% @see function_type/2 + +-spec function_type_return(syntaxTree()) -> syntaxTree(). + +function_type_return(Node) -> + case unwrap(Node) of + {type, _, 'fun', [_, Type]} -> + Type; + Node1 -> + (data(Node1))#function_type.return + end. + + +%% ===================================================================== +%% @doc Creates an abstract (subtype) constraint. The result represents +%% "<code><em>Name</em> :: <em>Type</em></code>". +%% +%% @see constraint_argument/1 +%% @see constraint_body/1 + +-record(constraint, {name :: syntaxTree(), + type :: syntaxTree()}). + +%% type(Node) = constraint +%% data(Node) = #constraint{name :: Name, +%% type :: Type} +%% +%% Name = syntaxTree() +%% Type = syntaxTree() +%% +%% `erl_parse' representation: +%% +%% {type, Pos, constraint, [{atom, Pos, is_subtype}, Name, Type]} +%% +%% Name = erl_parse() +%% Type = erl_parse() + +-spec constraint(syntaxTree(), syntaxTree()) -> syntaxTree(). + +constraint(Name, Type) -> + tree(constraint, + #constraint{name = Name, type = Type}). + +revert_constraint(Node) -> + Pos = get_pos(Node), + Name = constraint_argument(Node), + Type = constraint_body(Node), + {type, Pos, constraint, [Name, Type]}. + + +%% ===================================================================== +%% @doc Returns the name subtree of a `constraint' node. +%% +%% @see constraint/2 + +-spec constraint_argument(syntaxTree()) -> syntaxTree(). + +constraint_argument(Node) -> + case unwrap(Node) of + {type, _, constraint, [Name, _]} -> + Name; + Node1 -> + (data(Node1))#constraint.name + end. + +%% ===================================================================== +%% @doc Returns the type subtree of a `constraint' node. +%% +%% @see constraint/2 + +-spec constraint_body(syntaxTree()) -> syntaxTree(). + +constraint_body(Node) -> + case unwrap(Node) of + {type, _, constraint, [_, Type]} -> + Type; + Node1 -> + (data(Node1))#constraint.type + end. + + +%% ===================================================================== +%% @doc Creates an abstract type map assoc field. The result represents +%% "<code><em>KeyType</em> => <em>ValueType</em></code>". +%% +%% @see map_type_pair_key/1 +%% @see map_type_pair_value/1 + +-record(map_type_pair, {key :: syntaxTree(), + value :: syntaxTree()}). + +%% type(Node) = map_type_pair +%% data(Node) = #map_type_pair{key :: KeyType, +%% value :: ValueType} +%% +%% KeyType = syntaxTree() +%% ValueType = syntaxTree() +%% +%% `erl_parse' representation: +%% +%% {type, Pos, map_field_assoc, [KeyType, ValueType]} +%% +%% KeyType = erl_parse() +%% ValueType = erl_parse() + +-spec map_type_pair(syntaxTree(), syntaxTree()) -> syntaxTree(). + +map_type_pair(KeyType, ValueType) -> + tree(map_type_pair, + #map_type_pair{key = KeyType, value = ValueType}). + +revert_map_type_pair(Node) -> + Pos = get_pos(Node), + KeyType = map_type_pair_key(Node), + ValueType = map_type_pair_value(Node), + {type, Pos, map_field_assoc, [KeyType, ValueType]}. + +%% ===================================================================== +%% @doc Returns the key type subtrees of a `map_type_pair' node. +%% +%% @see map_type_pair/2 + +-spec map_type_pair_key(syntaxTree()) -> syntaxTree(). + +map_type_pair_key(Node) -> + case unwrap(Node) of + {type, _, map_field_assoc, [KeyType, _]} -> + KeyType; + Node1 -> + (data(Node1))#map_type_pair.key + end. + +%% ===================================================================== +%% @doc Returns the value type subtrees of a `map_type_pair' node. +%% +%% @see map_type_pair/2 + +-spec map_type_pair_value(syntaxTree()) -> syntaxTree(). + +map_type_pair_value(Node) -> + case unwrap(Node) of + {type, _, map_field_assoc, [_, ValueType]} -> + ValueType; + Node1 -> + (data(Node1))#map_type_pair.value + end. + + +%% ===================================================================== +%% @equiv map_type(any_size) + +map_type() -> + map_type(any_size). + +%% ===================================================================== +%% @doc Creates an abstract type map. If `Fields' is +%% `[F1, ..., Fn]', the result represents +%% "<code>#{<em>F1</em>, ..., <em>Fn</em>}</code>"; +%% otherwise, if `Fields' is `any_size', it represents +%% "<code>map()</code>". +%% +%% @see map_type_fields/1 + +%% type(Node) = map_type +%% data(Node) = Fields +%% +%% Fields = any_size | [syntaxTree()] +%% +%% `erl_parse' representation: +%% +%% {type, Pos, map, [Field]} +%% {type, Pos, map, any} +%% +%% Field = erl_parse() + +-spec map_type('any_size' | [syntaxTree()]) -> syntaxTree(). + +map_type(Fields) -> + tree(map_type, Fields). + +revert_map_type(Node) -> + Pos = get_pos(Node), + {type, Pos, map, map_type_fields(Node)}. + + +%% ===================================================================== +%% @doc Returns the list of field subtrees of a `map_type' node. +%% If `Node' represents "<code>map()</code>", `any_size' is returned; +%% otherwise, if `Node' represents +%% "<code>#{<em>F1</em>, ..., <em>Fn</em>}</code>", +%% `[F1, ..., Fn]' is returned. +%% +%% @see map_type/0 +%% @see map_type/1 + +-spec map_type_fields(syntaxTree()) -> 'any_size' | [syntaxTree()]. + +map_type_fields(Node) -> + case unwrap(Node) of + {type, _, map, Fields} when is_list(Fields) -> + Fields; + {type, _, map, any} -> + any_size; + Node1 -> + data(Node1) + end. + + +%% ===================================================================== +%% @doc Creates an abstract range type. The result represents +%% "<code><em>Low</em> .. <em>High</em></code>". +%% +%% @see integer_range_type_low/1 +%% @see integer_range_type_high/1 + +-record(integer_range_type, {low :: syntaxTree(), + high :: syntaxTree()}). + +%% type(Node) = integer_range_type +%% data(Node) = #integer_range_type{low :: Low, high :: High} +%% +%% Low = syntaxTree() +%% High = syntaxTree() +%% +%% `erl_parse' representation: +%% +%% {type, Pos, range, [Low, High]} +%% +%% Low = erl_parse() +%% High = erl_parse() + +-spec integer_range_type(syntaxTree(), syntaxTree()) -> syntaxTree(). + +integer_range_type(Low, High) -> + tree(integer_range_type, #integer_range_type{low = Low, high = High}). + +revert_integer_range_type(Node) -> + Pos = get_pos(Node), + Low = integer_range_type_low(Node), + High = integer_range_type_high(Node), + {type, Pos, range, [Low, High]}. + + +%% ===================================================================== +%% @doc Returns the low limit of an `integer_range_type' node. +%% +%% @see integer_range_type/2 + +-spec integer_range_type_low(syntaxTree()) -> syntaxTree(). + +integer_range_type_low(Node) -> + case unwrap(Node) of + {type, _, range, [Low, _]} -> + Low; + Node1 -> + (data(Node1))#integer_range_type.low + end. + +%% ===================================================================== +%% @doc Returns the high limit of an `integer_range_type' node. +%% +%% @see integer_range_type/2 + +-spec integer_range_type_high(syntaxTree()) -> syntaxTree(). + +integer_range_type_high(Node) -> + case unwrap(Node) of + {type, _, range, [_, High]} -> + High; + Node1 -> + (data(Node1))#integer_range_type.high + end. + + +%% ===================================================================== +%% @doc Creates an abstract record type. If `Fields' is +%% `[F1, ..., Fn]', the result represents +%% "<code>#<em>Name</em>{<em>F1</em>, ..., <em>Fn</em>}</code>". +%% +%% @see record_type_name/1 +%% @see record_type_fields/1 + +-record(record_type, {name :: syntaxTree(), + fields :: [syntaxTree()]}). + +%% type(Node) = record_type +%% data(Node) = #record_type{name = Name, fields = Fields} +%% +%% Name = syntaxTree() +%% Fields = [syntaxTree()] +%% +%% `erl_parse' representation: +%% +%% {type, Pos, record, [Name|Fields]} +%% +%% Name = erl_parse() +%% Fields = [erl_parse()] + +-spec record_type(syntaxTree(), [syntaxTree()]) -> syntaxTree(). + +record_type(Name, Fields) -> + tree(record_type, #record_type{name = Name, fields = Fields}). + +revert_record_type(Node) -> + Pos = get_pos(Node), + Name = record_type_name(Node), + Fields = record_type_fields(Node), + {type, Pos, record, [Name | Fields]}. + + +%% ===================================================================== +%% @doc Returns the name subtree of a `record_type' node. +%% +%% @see record_type/2 + +-spec record_type_name(syntaxTree()) -> syntaxTree(). + +record_type_name(Node) -> + case unwrap(Node) of + {type, _, record, [Name|_]} -> + Name; + Node1 -> + (data(Node1))#record_type.name + end. + +%% ===================================================================== +%% @doc Returns the fields subtree of a `record_type' node. +%% +%% @see record_type/2 + +-spec record_type_fields(syntaxTree()) -> [syntaxTree()]. + +record_type_fields(Node) -> + case unwrap(Node) of + {type, _, record, [_|Fields]} -> + Fields; + Node1 -> + (data(Node1))#record_type.fields + end. + + +%% ===================================================================== +%% @doc Creates an abstract record type field. The result represents +%% "<code><em>Name</em> :: <em>Type</em></code>". +%% +%% @see record_type_field_name/1 +%% @see record_type_field_type/1 + +-record(record_type_field, {name :: syntaxTree(), + type :: syntaxTree()}). + +%% type(Node) = record_type_field +%% data(Node) = #record_type_field{name = Name, type = Type} +%% +%% Name = syntaxTree() +%% Type = syntaxTree() +%% +%% `erl_parse' representation: +%% +%% {type, Pos, field_type, [Name, Type]} +%% +%% Name = erl_parse() +%% Type = erl_parse() + +-spec record_type_field(syntaxTree(), syntaxTree()) -> syntaxTree(). + +record_type_field(Name, Type) -> + tree(record_type_field, #record_type_field{name = Name, type = Type}). + +revert_record_type_field(Node) -> + Pos = get_pos(Node), + Name = record_type_field_name(Node), + Type = record_type_field_type(Node), + {type, Pos, field_type, [Name, Type]}. + + +%% ===================================================================== +%% @doc Returns the name subtree of a `record_type_field' node. +%% +%% @see record_type_field/2 + +-spec record_type_field_name(syntaxTree()) -> syntaxTree(). + +record_type_field_name(Node) -> + case unwrap(Node) of + {type, _, field_type, [Name, _]} -> + Name; + Node1 -> + (data(Node1))#record_type_field.name + end. + +%% ===================================================================== +%% @doc Returns the type subtree of a `record_type_field' node. +%% +%% @see record_type_field/2 + +-spec record_type_field_type(syntaxTree()) -> syntaxTree(). + +record_type_field_type(Node) -> + case unwrap(Node) of + {type, _, field_type, [_, Type]} -> + Type; + Node1 -> + (data(Node1))#record_type_field.type + end. + + +%% ===================================================================== +%% @equiv tuple_type(any_size) + +tuple_type() -> + tuple_type(any_size). + +%% ===================================================================== +%% @doc Creates an abstract type tuple. If `Elements' is +%% `[T1, ..., Tn]', the result represents +%% "<code>{<em>T1</em>, ..., <em>Tn</em>}</code>"; +%% otherwise, if `Elements' is `any_size', it represents +%% "<code>tuple()</code>". +%% +%% @see tuple_type_elements/1 + +%% type(Node) = tuple_type +%% data(Node) = Elements +%% +%% Elements = any_size | [syntaxTree()] +%% +%% `erl_parse' representation: +%% +%% {type, Pos, tuple, [Element]} +%% {type, Pos, tuple, any} +%% +%% Element = erl_parse() + +-spec tuple_type(any_size | [syntaxTree()]) -> syntaxTree(). + +tuple_type(Elements) -> + tree(tuple_type, Elements). + +revert_tuple_type(Node) -> + Pos = get_pos(Node), + {type, Pos, tuple, tuple_type_elements(Node)}. + + +%% ===================================================================== +%% @doc Returns the list of type element subtrees of a `tuple_type' node. +%% If `Node' represents "<code>tuple()</code>", `any_size' is returned; +%% otherwise, if `Node' represents +%% "<code>{<em>T1</em>, ..., <em>Tn</em>}</code>", +%% `[T1, ..., Tn]' is returned. +%% +%% @see tuple_type/0 +%% @see tuple_type/1 + +-spec tuple_type_elements(syntaxTree()) -> 'any_size' | [syntaxTree()]. + +tuple_type_elements(Node) -> + case unwrap(Node) of + {type, _, tuple, Elements} when is_list(Elements) -> + Elements; + {type, _, tuple, any} -> + any_size; + Node1 -> + data(Node1) + end. + + +%% ===================================================================== +%% @doc Creates an abstract type union. If `Types' is +%% `[T1, ..., Tn]', the result represents +%% "<code><em>T1</em> | ... | <em>Tn</em></code>". +%% +%% @see type_union_types/1 + +%% type(Node) = type_union +%% data(Node) = Types +%% +%% Types = [syntaxTree()] +%% +%% `erl_parse' representation: +%% +%% {type, Pos, union, Elements} +%% +%% Elements = [erl_parse()] + +-spec type_union([syntaxTree()]) -> syntaxTree(). + +type_union(Types) -> + tree(type_union, Types). + +revert_type_union(Node) -> + Pos = get_pos(Node), + {type, Pos, union, type_union_types(Node)}. + + +%% ===================================================================== +%% @doc Returns the list of type subtrees of a `type_union' node. +%% +%% @see type_union/1 + +-spec type_union_types(syntaxTree()) -> [syntaxTree()]. + +type_union_types(Node) -> + case unwrap(Node) of + {type, _, union, Types} when is_list(Types) -> + Types; + Node1 -> + data(Node1) + end. + + +%% ===================================================================== +%% @doc Creates an abstract user type. If `Arguments' is +%% `[T1, ..., Tn]', the result represents +%% "<code><em>TypeName</em>(<em>T1</em>, ...<em>Tn</em>)</code>". +%% +%% @see type_application/2 +%% @see user_type_application_name/1 +%% @see user_type_application_arguments/1 + +-record(user_type_application, {type_name :: syntaxTree(), + arguments :: [syntaxTree()]}). + +%% type(Node) = user_type_application +%% data(Node) = #user_type_application{type_name :: TypeName, +%% arguments :: Arguments} +%% +%% TypeName = syntaxTree() +%% Arguments = [syntaxTree()] +%% +%% `erl_parse' representation: +%% +%% {user_type, Pos, Name, Arguments} +%% +%% Name = erl_parse() +%% Arguments = [Type] +%% Type = erl_parse() + +-spec user_type_application(syntaxTree(), [syntaxTree()]) -> syntaxTree(). + +user_type_application(TypeName, Arguments) -> + tree(user_type_application, + #user_type_application{type_name = TypeName, arguments = Arguments}). + +revert_user_type_application(Node) -> + Pos = get_pos(Node), + TypeName = user_type_application_name(Node), + Arguments = user_type_application_arguments(Node), + {user_type, Pos, atom_value(TypeName), Arguments}. + + +%% ===================================================================== +%% @doc Returns the type name subtree of a `user_type_application' node. +%% +%% @see user_type_application/2 + +-spec user_type_application_name(syntaxTree()) -> syntaxTree(). + +user_type_application_name(Node) -> + case unwrap(Node) of + {user_type, Pos, Name, _} -> + set_pos(atom(Name), Pos); + Node1 -> + (data(Node1))#user_type_application.type_name + end. + + +%% ===================================================================== +%% @doc Returns the arguments subtrees of a `user_type_application' node. +%% +%% @see user_type_application/2 + +-spec user_type_application_arguments(syntaxTree()) -> [syntaxTree()]. + +user_type_application_arguments(Node) -> + case unwrap(Node) of + {user_type, _, _, Arguments} -> + Arguments; + Node1 -> + (data(Node1))#user_type_application.arguments + end. + + +%% ===================================================================== +%% @doc Creates an abstract typed record field specification. The +%% result represents "<code><em>Field</em> :: <em>Type</em></code>". +%% +%% @see typed_record_field_body/1 +%% @see typed_record_field_type/1 + +-record(typed_record_field, {body :: syntaxTree(), + type :: syntaxTree()}). + +%% type(Node) = typed_record_field +%% data(Node) = #typed_record_field{body :: Field +%% type = Type} +%% +%% Field = syntaxTree() +%% Type = syntaxTree() + +-spec typed_record_field(syntaxTree(), syntaxTree()) -> syntaxTree(). + +typed_record_field(Field, Type) -> + tree(typed_record_field, + #typed_record_field{body = Field, type = Type}). + + +%% ===================================================================== +%% @doc Returns the field subtree of a `typed_record_field' node. +%% +%% @see typed_record_field/2 + +-spec typed_record_field_body(syntaxTree()) -> syntaxTree(). + +typed_record_field_body(Node) -> + (data(Node))#typed_record_field.body. + + +%% ===================================================================== +%% @doc Returns the type subtree of a `typed_record_field' node. +%% +%% @see typed_record_field/2 + +-spec typed_record_field_type(syntaxTree()) -> syntaxTree(). + +typed_record_field_type(Node) -> + (data(Node))#typed_record_field.type. + %% ===================================================================== %% @doc Creates an abstract list comprehension. If `Body' is @@ -6168,6 +7355,8 @@ revert(Node) -> revert_root(Node) -> case type(Node) of + annotated_type -> + revert_annotated_type(Node); application -> revert_application(Node); atom -> @@ -6182,6 +7371,8 @@ revert_root(Node) -> revert_binary_field(Node); binary_generator -> revert_binary_generator(Node); + bitstring_type -> + revert_bitstring_type(Node); block_expr -> revert_block_expr(Node); case_expr -> @@ -6194,6 +7385,10 @@ revert_root(Node) -> revert_clause(Node); cond_expr -> revert_cond_expr(Node); + constrained_function_type -> + revert_constrained_function_type(Node); + constraint -> + revert_constraint(Node); eof_marker -> revert_eof_marker(Node); error_marker -> @@ -6202,8 +7397,12 @@ revert_root(Node) -> revert_float(Node); fun_expr -> revert_fun_expr(Node); + fun_type -> + revert_fun_type(Node); function -> revert_function(Node); + function_type -> + revert_function_type(Node); generator -> revert_generator(Node); if_expr -> @@ -6214,6 +7413,8 @@ revert_root(Node) -> revert_infix_expr(Node); integer -> revert_integer(Node); + integer_range_type -> + revert_integer_range_type(Node); list -> revert_list(Node); list_comp -> @@ -6224,6 +7425,10 @@ revert_root(Node) -> revert_map_field_assoc(Node); map_field_exact -> revert_map_field_exact(Node); + map_type -> + revert_map_type(Node); + map_type_pair -> + revert_map_type_pair(Node); match_expr -> revert_match_expr(Node); module_qualifier -> @@ -6244,14 +7449,26 @@ revert_root(Node) -> revert_record_expr(Node); record_index_expr -> revert_record_index_expr(Node); + record_type -> + revert_record_type(Node); + record_type_field -> + revert_record_type_field(Node); + type_application -> + revert_type_application(Node); + type_union -> + revert_type_union(Node); string -> revert_string(Node); try_expr -> revert_try_expr(Node); tuple -> revert_tuple(Node); + tuple_type -> + revert_tuple_type(Node); underscore -> revert_underscore(Node); + user_type_application -> + revert_user_type_application(Node); variable -> revert_variable(Node); warning_marker -> @@ -6379,6 +7596,9 @@ subtrees(T) -> []; false -> case type(T) of + annotated_type -> + [[annotated_type_name(T)], + [annotated_type_body(T)]]; application -> [[application_operator(T)], application_arguments(T)]; @@ -6407,6 +7627,9 @@ subtrees(T) -> binary_generator -> [[binary_generator_pattern(T)], [binary_generator_body(T)]]; + bitstring_type -> + [[bitstring_type_m(T)], + [bitstring_type_n(T)]]; block_expr -> [block_expr_body(T)]; case_expr -> @@ -6429,14 +7652,30 @@ subtrees(T) -> [cond_expr_clauses(T)]; conjunction -> [conjunction_body(T)]; + constrained_function_type -> + C = constrained_function_type_argument(T), + [[constrained_function_type_body(T)], + conjunction_body(C)]; + constraint -> + [[constraint_argument(T)], + constraint_body(T)]; disjunction -> [disjunction_body(T)]; form_list -> [form_list_elements(T)]; fun_expr -> [fun_expr_clauses(T)]; + fun_type -> + []; function -> [[function_name(T)], function_clauses(T)]; + function_type -> + case function_type_arguments(T) of + any_arity -> + [[function_type_return(T)]]; + As -> + [As,[function_type_return(T)]] + end; generator -> [[generator_pattern(T)], [generator_body(T)]]; if_expr -> @@ -6447,6 +7686,9 @@ subtrees(T) -> [[infix_expr_left(T)], [infix_expr_operator(T)], [infix_expr_right(T)]]; + integer_range_type -> + [[integer_range_type_low(T)], + [integer_range_type_high(T)]]; list -> case list_suffix(T) of none -> @@ -6476,6 +7718,11 @@ subtrees(T) -> map_field_exact -> [[map_field_exact_name(T)], [map_field_exact_value(T)]]; + map_type -> + [map_type_fields(T)]; + map_type_pair -> + [[map_type_pair_key(T)], + [map_type_pair_value(T)]]; match_expr -> [[match_expr_pattern(T)], [match_expr_body(T)]]; @@ -6523,6 +7770,12 @@ subtrees(T) -> record_index_expr -> [[record_index_expr_type(T)], [record_index_expr_field(T)]]; + record_type -> + [[record_type_name(T)], + record_type_fields(T)]; + record_type_field -> + [[record_type_field_name(T)], + [record_type_field_type(T)]]; size_qualifier -> [[size_qualifier_body(T)], [size_qualifier_argument(T)]]; @@ -6532,7 +7785,20 @@ subtrees(T) -> try_expr_handlers(T), try_expr_after(T)]; tuple -> - [tuple_elements(T)] + [tuple_elements(T)]; + tuple_type -> + [tuple_type_elements(T)]; + type_application -> + [[type_application_name(T)], + type_application_arguments(T)]; + type_union -> + [type_union_types(T)]; + typed_record_field -> + [[typed_record_field_body(T)], + [typed_record_field_type(T)]]; + user_type_application -> + [[user_type_application_name(T)], + user_type_application_arguments(T)] end end. @@ -6576,6 +7842,7 @@ update_tree(Node, Groups) -> -spec make_tree(atom(), [[syntaxTree()]]) -> syntaxTree(). +make_tree(annotated_type, [[N], [T]]) -> annotated_type(N, T); make_tree(application, [[F], A]) -> application(F, A); make_tree(arity_qualifier, [[N], [A]]) -> arity_qualifier(N, A); make_tree(attribute, [[N]]) -> attribute(N); @@ -6585,6 +7852,7 @@ make_tree(binary_comp, [[T], B]) -> binary_comp(T, B); make_tree(binary_field, [[B]]) -> binary_field(B); make_tree(binary_field, [[B], Ts]) -> binary_field(B, Ts); make_tree(binary_generator, [[P], [E]]) -> binary_generator(P, E); +make_tree(bitstring_type, [[M], [N]]) -> bitstring_type(M, N); make_tree(block_expr, [B]) -> block_expr(B); make_tree(case_expr, [[A], C]) -> case_expr(A, C); make_tree(catch_expr, [[B]]) -> catch_expr(B); @@ -6593,14 +7861,20 @@ make_tree(clause, [P, B]) -> clause(P, none, B); make_tree(clause, [P, [G], B]) -> clause(P, G, B); make_tree(cond_expr, [C]) -> cond_expr(C); make_tree(conjunction, [E]) -> conjunction(E); +make_tree(constrained_function_type, [[F],C]) -> + constrained_function_type(F, C); +make_tree(constraint, [[N], Ts]) -> constraint(N, Ts); make_tree(disjunction, [E]) -> disjunction(E); make_tree(form_list, [E]) -> form_list(E); make_tree(fun_expr, [C]) -> fun_expr(C); make_tree(function, [[N], C]) -> function(N, C); +make_tree(function_type, [[T]]) -> function_type(T); +make_tree(function_type, [A,[T]]) -> function_type(A, T); make_tree(generator, [[P], [E]]) -> generator(P, E); make_tree(if_expr, [C]) -> if_expr(C); make_tree(implicit_fun, [[N]]) -> implicit_fun(N); make_tree(infix_expr, [[L], [F], [R]]) -> infix_expr(L, F, R); +make_tree(integer_range_type, [[L],[H]]) -> integer_range_type(L, H); make_tree(list, [P]) -> list(P); make_tree(list, [P, [S]]) -> list(P, S); make_tree(list_comp, [[T], B]) -> list_comp(T, B); @@ -6610,6 +7884,8 @@ make_tree(map_expr, [Fs]) -> map_expr(Fs); make_tree(map_expr, [[E], Fs]) -> map_expr(E, Fs); make_tree(map_field_assoc, [[K], [V]]) -> map_field_assoc(K, V); make_tree(map_field_exact, [[K], [V]]) -> map_field_exact(K, V); +make_tree(map_type, [Fs]) -> map_type(Fs); +make_tree(map_type_pair, [[K],[V]]) -> map_type_pair(K, V); make_tree(match_expr, [[P], [E]]) -> match_expr(P, E); make_tree(named_fun_expr, [[N], C]) -> named_fun_expr(N, C); make_tree(module_qualifier, [[M], [N]]) -> module_qualifier(M, N); @@ -6625,9 +7901,16 @@ 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(record_type, [[N],Fs]) -> record_type(N, Fs); +make_tree(record_type_field, [[N],[T]]) -> record_type_field(N, T); 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). +make_tree(tuple, [E]) -> tuple(E); +make_tree(tuple_type, [Es]) -> tuple_type(Es); +make_tree(type_application, [[N], Ts]) -> type_application(N, Ts); +make_tree(type_union, [Es]) -> type_union(Es); +make_tree(typed_record_field, [[F],[T]]) -> typed_record_field(F, T); +make_tree(user_type_application, [[N], Ts]) -> user_type_application(N, Ts). %% ===================================================================== @@ -6954,6 +8237,7 @@ fold_variable_names(Vs) -> unfold_variable_names(Vs, Pos) -> [set_pos(variable(V), Pos) || V <- Vs]. + %% Support functions for transforming lists of record field definitions. %% %% There is no unique representation for field definitions in the @@ -6968,6 +8252,16 @@ fold_record_fields(Fs) -> [fold_record_field(F) || F <- Fs]. fold_record_field(F) -> + case type(F) of + typed_record_field -> + Field = fold_record_field_1(typed_record_field_body(F)), + Type = typed_record_field_type(F), + {typed_record_field, Field, Type}; + record_field -> + fold_record_field_1(F) + end. + +fold_record_field_1(F) -> Pos = get_pos(F), Name = record_field_name(F), case record_field_value(F) of @@ -6980,10 +8274,11 @@ fold_record_field(F) -> unfold_record_fields(Fs) -> [unfold_record_field(F) || F <- Fs]. -unfold_record_field({typed_record_field, Field, _Type}) -> - unfold_record_field_1(Field); +unfold_record_field({typed_record_field, Field, Type}) -> + F = unfold_record_field_1(Field), + set_pos(typed_record_field(F, Type), get_pos(F)); unfold_record_field(Field) -> - unfold_record_field_1(Field). + unfold_record_field_1(Field). unfold_record_field_1({record_field, Pos, Name}) -> set_pos(record_field(Name), Pos); @@ -7010,5 +8305,4 @@ unfold_binary_field_type({Type, Size}, Pos) -> unfold_binary_field_type(Type, Pos) -> set_pos(atom(Type), Pos). - %% ===================================================================== diff --git a/lib/syntax_tools/src/erl_syntax_lib.erl b/lib/syntax_tools/src/erl_syntax_lib.erl index 58c4cc5244..9815559779 100644 --- a/lib/syntax_tools/src/erl_syntax_lib.erl +++ b/lib/syntax_tools/src/erl_syntax_lib.erl @@ -36,6 +36,7 @@ analyze_import_attribute/1, analyze_module_attribute/1, analyze_record_attribute/1, analyze_record_expr/1, analyze_record_field/1, analyze_wild_attribute/1, annotate_bindings/1, + analyze_type_application/1, analyze_type_name/1, annotate_bindings/2, fold/3, fold_subtrees/3, foldl_listlist/3, function_name_expansions/1, is_fail_expr/1, limit/2, limit/3, map/2, map_subtrees/2, mapfold/3, mapfold_subtrees/3, @@ -1029,14 +1030,17 @@ is_fail_expr(E) -> %% <dt>`{records, Records}'</dt> %% <dd><ul> %% <li>`Records = [{atom(), Fields}]'</li> -%% <li>`Fields = [{atom(), Default}]'</li> +%% <li>`Fields = [{atom(), {Default, Type}}]'</li> %% <li>`Default = none | syntaxTree()'</li> +%% <li>`Type = none | syntaxTree()'</li> %% </ul> %% `Records' is a list of pairs representing the names %% and corresponding field declarations of all record declaration %% attributes occurring in `Forms'. For fields declared %% without a default value, the corresponding value for -%% `Default' is the atom `none' (cf. +%% `Default' is the atom `none'. Similarly, for fields declared +%% without a type, the corresponding value for `Type' is the +%% atom `none' (cf. %% `analyze_record_attribute/1'). We do not guarantee %% that each record name occurs at most once in the list. The %% order of listing is not defined.</dd> @@ -1055,9 +1059,9 @@ is_fail_expr(E) -> %% %% @see analyze_wild_attribute/1 %% @see analyze_export_attribute/1 +%% @see analyze_function/1 %% @see analyze_import_attribute/1 %% @see analyze_record_attribute/1 -%% @see analyze_function/1 %% @see erl_syntax:error_marker_info/1 %% @see erl_syntax:warning_marker_info/1 @@ -1102,8 +1106,6 @@ collect_attribute(file, _, Info) -> Info; collect_attribute(record, {R, L}, Info) -> finfo_add_record(R, L, Info); -collect_attribute(spec, _, Info) -> - Info; collect_attribute(_, {N, V}, Info) -> finfo_add_attribute(N, V, Info). @@ -1114,12 +1116,15 @@ collect_attribute(_, {N, V}, Info) -> module_imports = [] :: [atom()], imports = [] :: [{atom(), [{atom(), arity()}]}], attributes = [] :: [{atom(), term()}], - records = [] :: [{atom(), [{atom(), field_default()}]}], + records = [] :: [{atom(), [{atom(), + field_default(), + field_type()}]}], errors = [] :: [term()], warnings = [] :: [term()], functions = [] :: [{atom(), arity()}]}). -type field_default() :: 'none' | erl_syntax:syntaxTree(). +-type field_type() :: 'none' | erl_syntax:syntaxTree(). new_finfo() -> #forms{}. @@ -1326,8 +1331,6 @@ analyze_attribute(file, Node) -> analyze_file_attribute(Node); analyze_attribute(record, Node) -> analyze_record_attribute(Node); -analyze_attribute(spec, _Node) -> - spec; analyze_attribute(_, Node) -> %% A "wild" attribute (such as e.g. a `compile' directive). analyze_wild_attribute(Node). @@ -1523,6 +1526,55 @@ analyze_import_attribute(Node) -> %% ===================================================================== +%% @spec analyze_type_name(Node::syntaxTree()) -> TypeName +%% +%% TypeName = atom() +%% | {atom(), integer()} +%% | {ModuleName, {atom(), integer()}} +%% ModuleName = atom() +%% +%% @doc Returns the type name represented by a syntax tree. If +%% `Node' represents a type name, such as +%% "`foo/1'" or "`bloggs:fred/2'", a uniform +%% representation of that name is returned. +%% +%% The evaluation throws `syntax_error' if +%% `Node' does not represent a well-formed type name. + +-spec analyze_type_name(erl_syntax:syntaxTree()) -> typeName(). + +analyze_type_name(Node) -> + case erl_syntax:type(Node) of + atom -> + erl_syntax:atom_value(Node); + arity_qualifier -> + A = erl_syntax:arity_qualifier_argument(Node), + N = erl_syntax:arity_qualifier_body(Node), + + case ((erl_syntax:type(A) =:= integer) + and (erl_syntax:type(N) =:= atom)) + of + true -> + append_arity(erl_syntax:integer_value(A), + erl_syntax:atom_value(N)); + _ -> + throw(syntax_error) + end; + module_qualifier -> + M = erl_syntax:module_qualifier_argument(Node), + case erl_syntax:type(M) of + atom -> + N = erl_syntax:module_qualifier_body(Node), + N1 = analyze_type_name(N), + {erl_syntax:atom_value(M), N1}; + _ -> + throw(syntax_error) + end; + _ -> + throw(syntax_error) + end. + +%% ===================================================================== %% @spec analyze_wild_attribute(Node::syntaxTree()) -> {atom(), term()} %% %% @doc Returns the name and value of a "wild" attribute. The result is @@ -1547,6 +1599,7 @@ analyze_wild_attribute(Node) -> atom -> case erl_syntax:attribute_arguments(Node) of [V] -> + %% Note: does not work well with macros. case catch {ok, erl_syntax:concrete(V)} of {ok, Val} -> {erl_syntax:atom_value(N), Val}; @@ -1568,17 +1621,22 @@ analyze_wild_attribute(Node) -> %% @spec analyze_record_attribute(Node::syntaxTree()) -> %% {atom(), Fields} %% -%% Fields = [{atom(), none | syntaxTree()}] +%% Fields = [{atom(), {Default, Type}}] +%% Default = none | syntaxTree() +%% Type = none | syntaxTree() %% %% @doc Returns the name and the list of fields of a record declaration %% attribute. The result is a pair `{Name, Fields}', if %% `Node' represents "`-record(Name, {...}).'", %% where `Fields' is a list of pairs `{Label, -%% Default}' for each field "`Label'" or "`Label = -%% <em>Default</em>'" in the declaration, listed in left-to-right +%% {Default, Type}}' for each field "`Label'", "`Label = +%% <em>Default</em>'", "`Label :: <em>Type</em>'", or +%% "`Label = <em>Default</em> :: <em>Type</em>'" in the declaration, +%% listed in left-to-right %% order. If the field has no default-value declaration, the value for -%% `Default' will be the atom `none'. We do not -%% guarantee that each label occurs at most one in the list. +%% `Default' will be the atom `none'. If the field has no type declaration, +%% the value for `Type' will be the atom `none'. We do not +%% guarantee that each label occurs at most once in the list. %% %% The evaluation throws `syntax_error' if %% `Node' does not represent a well-formed record declaration @@ -1587,7 +1645,9 @@ analyze_wild_attribute(Node) -> %% @see analyze_attribute/1 %% @see analyze_record_field/1 --type fields() :: [{atom(), 'none' | erl_syntax:syntaxTree()}]. +-type field() :: {atom(), {field_default(), field_type()}}. + +-type fields() :: [field()]. -spec analyze_record_attribute(erl_syntax:syntaxTree()) -> {atom(), fields()}. @@ -1625,7 +1685,7 @@ analyze_record_attribute_tuple(Node) -> %% {atom(), Info} | atom() %% %% Info = {atom(), [{atom(), Value}]} | {atom(), atom()} | atom() -%% Value = none | syntaxTree() +%% Value = syntaxTree() %% %% @doc Returns the record name and field name/names of a record %% expression. If `Node' has type `record_expr', @@ -1645,9 +1705,9 @@ analyze_record_attribute_tuple(Node) -> %% %% For a `record_expr' node, `Info' represents %% the record name and the list of descriptors for the involved fields, -%% listed in the order they appear. (See -%% `analyze_record_field/1' for details on the field -%% descriptors). For a `record_access' node, +%% listed in the order they appear. A field descriptor is a pair +%% `{Label, Value}', if `Node' represents "`Label = <em>Value</em>'". +%% For a `record_access' node, %% `Info' represents the record name and the field name. For a %% `record_index_expr' node, `Info' represents the %% record name and the name field name. @@ -1659,7 +1719,7 @@ analyze_record_attribute_tuple(Node) -> %% @see analyze_record_attribute/1 %% @see analyze_record_field/1 --type info() :: {atom(), [{atom(), 'none' | erl_syntax:syntaxTree()}]} +-type info() :: {atom(), [{atom(), erl_syntax:syntaxTree()}]} | {atom(), atom()} | atom(). -spec analyze_record_expr(erl_syntax:syntaxTree()) -> {atom(), info()} | atom(). @@ -1670,8 +1730,9 @@ analyze_record_expr(Node) -> A = erl_syntax:record_expr_type(Node), case erl_syntax:type(A) of atom -> - Fs = [analyze_record_field(F) - || F <- erl_syntax:record_expr_fields(Node)], + Fs0 = [analyze_record_field(F) + || F <- erl_syntax:record_expr_fields(Node)], + Fs = [{N, D} || {N, {D, _T}} <- Fs0], {record_expr, {erl_syntax:atom_value(A), Fs}}; _ -> throw(syntax_error) @@ -1713,16 +1774,19 @@ analyze_record_expr(Node) -> end. %% ===================================================================== -%% @spec analyze_record_field(Node::syntaxTree()) -> {atom(), Value} +%% @spec analyze_record_field(Node::syntaxTree()) -> {atom(), {Default, Type}} %% -%% Value = none | syntaxTree() +%% Default = none | syntaxTree() +%% Type = none | syntaxTree() %% -%% @doc Returns the label and value-expression of a record field -%% specifier. The result is a pair `{Label, Value}', if -%% `Node' represents "`Label = <em>Value</em>'" or -%% "`Label'", where in the first case, `Value' is -%% a syntax tree, and in the second case `Value' is -%% `none'. +%% @doc Returns the label, value-expression, and type of a record field +%% specifier. The result is a pair `{Label, {Default, Type}}', if +%% `Node' represents "`Label'", "`Label = <em>Default</em>'", +%% "`Label :: <em>Type</em>'", or +%% "`Label = <em>Default</em> :: <em>Type</em>'". +%% If the field has no value-expression, the value for +%% `Default' will be the atom `none'. If the field has no type, +%% the value for `Type' will be the atom `none'. %% %% The evaluation throws `syntax_error' if %% `Node' does not represent a well-formed record field @@ -1731,8 +1795,7 @@ analyze_record_expr(Node) -> %% @see analyze_record_attribute/1 %% @see analyze_record_expr/1 --spec analyze_record_field(erl_syntax:syntaxTree()) -> - {atom(), 'none' | erl_syntax:syntaxTree()}. +-spec analyze_record_field(erl_syntax:syntaxTree()) -> field(). analyze_record_field(Node) -> case erl_syntax:type(Node) of @@ -1741,10 +1804,15 @@ analyze_record_field(Node) -> case erl_syntax:type(A) of atom -> T = erl_syntax:record_field_value(Node), - {erl_syntax:atom_value(A), T}; + {erl_syntax:atom_value(A), {T, none}}; _ -> throw(syntax_error) end; + typed_record_field -> + F = erl_syntax:typed_record_field_body(Node), + {N, {V, _none}} = analyze_record_field(F), + T = erl_syntax:typed_record_field_type(Node), + {N, {V, T}}; _ -> throw(syntax_error) end. @@ -1887,6 +1955,55 @@ analyze_application(Node) -> %% ===================================================================== +%% @spec analyze_type_application(Node::syntaxTree()) -> typeName() +%% +%% TypeName = {atom(), integer()} +%% | {ModuleName, {atom(), integer()}} +%% ModuleName = atom() +%% +%% @doc Returns the name of a used type. The result is a +%% representation of the name of the used pre-defined or local type `N/A', +%% if `Node' represents a local (user) type application +%% "`<em>N</em>(<em>T_1</em>, ..., <em>T_A</em>)'", or +%% a representation of the name of the used remote type `M:N/A' +%% if `Node' represents a remote user type application +%% "`<em>M</em>:<em>N</em>(<em>T_1</em>, ..., <em>T_A</em>)'". +%% +%% The evaluation throws `syntax_error' if `Node' does not represent a +%% well-formed (user) type application expression. +%% +%% @see analyze_type_name/1 + +-type typeName() :: atom() | {module(), atom(), arity()} | {atom(), arity()}. + +-spec analyze_type_application(erl_syntax:syntaxTree()) -> typeName(). + +analyze_type_application(Node) -> + case erl_syntax:type(Node) of + type_application -> + A = length(erl_syntax:type_application_arguments(Node)), + N = erl_syntax:type_application_name(Node), + case catch {ok, analyze_type_name(N)} of + {ok, TypeName} -> + append_arity(A, TypeName); + _ -> + throw(syntax_error) + end; + user_type_application -> + A = length(erl_syntax:user_type_application_arguments(Node)), + N = erl_syntax:user_type_application_name(Node), + case catch {ok, analyze_type_name(N)} of + {ok, TypeName} -> + append_arity(A, TypeName); + _ -> + throw(syntax_error) + end; + _ -> + throw(syntax_error) + end. + + +%% ===================================================================== %% @spec function_name_expansions(Names::[Name]) -> [{ShortName, Name}] %% %% Name = ShortName | {atom(), Name} |