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Add in support for initialising auto variables from lambda expressions

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git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/branches/gsoc2009-matevz@13858 626c5289-ae23-0410-ae9c-e8d60b6d4f22
This commit is contained in:
William S Fulton 2012-10-02 21:12:36 +00:00
commit 7ca8f025ad
2 changed files with 41 additions and 14 deletions
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8
Examples/test-suite/cpp0x_lambda_functions.i
View file

@ -36,6 +36,10 @@ auto lambda8 = [] (int x, int y) throw() -> int { return x+y; };
auto lambda9 = [] (int x, int y) mutable throw() -> int { return x+y; };
auto lambda10 = [] (int x, int y) throw(int) { return x+y; };
auto lambda11 = [] (int x, int y) mutable throw(int) { return x+y; };
auto lambda12 = [] (int a, int b) { return a + b; }(1, 2);
auto lambda13 = [] (int a, int b) mutable { return a + b; }(1, 2);
auto lambda14 = [] () throw () {};
auto lambda15 = [] () mutable throw () {};
int runLambda1() {
return lambda1(5,6);
@ -70,11 +74,9 @@ int runLambdaInline() {
struct LambdaStruct {
static constexpr auto lambda_struct1 = [=]() { return thing;};
};
int(*lambda101notauto)(int, int) = [] (int a, int b) { return a + b; };
auto lambda100 = [] { return thing;};
int lambda101 = [] (int a, int b) { return a + b; }(1, 2);
int lambda102 = [] (int a, int b) mutable { return a + b; }(1, 2);
auto lambda103 = [] () throw () { /* does not throw */ };
auto lambda104 = [] () mutable throw () { /* does not throw */ };
void lambda_init(int = ([=]{ return 0; })());
%}

47
Source/CParse/parser.y
View file

@ -1690,7 +1690,7 @@ static void tag_nodes(Node *n, const_String_or_char_ptr attrname, DOH *value) {
%type <node> types_directive template_directive warn_directive ;
/* C declarations */
%type <node> c_declaration c_decl c_decl_tail c_enum_key c_enum_inherit c_enum_decl c_enum_forward_decl c_constructor_decl c_lambda_decl c_lambda_decl_front ;
%type <node> c_declaration c_decl c_decl_tail c_enum_key c_enum_inherit c_enum_decl c_enum_forward_decl c_constructor_decl;
%type <node> enumlist edecl;
/* C++ declarations */
@ -1698,7 +1698,7 @@ static void tag_nodes(Node *n, const_String_or_char_ptr attrname, DOH *value) {
%type <node> cpp_members cpp_member;
%type <node> cpp_constructor_decl cpp_destructor_decl cpp_protection_decl cpp_conversion_operator cpp_static_assert;
%type <node> cpp_swig_directive cpp_temp_possible cpp_nested cpp_opt_declarators ;
%type <node> cpp_using_decl cpp_namespace_decl cpp_catch_decl ;
%type <node> cpp_using_decl cpp_namespace_decl cpp_catch_decl cpp_lambda_decl;
%type <node> kwargs options;
/* Misc */
@ -1735,6 +1735,8 @@ static void tag_nodes(Node *n, const_String_or_char_ptr attrname, DOH *value) {
%type <ptype> type_specifier primitive_type_list ;
%type <node> fname stringtype;
%type <node> featattr;
%type <node> lambda_introducer lambda_body;
%type <pl> lambda_tail;
%%
@ -3098,7 +3100,7 @@ c_declaration : c_decl {
appendChild($$,firstChild($5));
}
}
| c_lambda_decl { Swig_warning(WARN_CPP11_LAMBDA, cparse_file, cparse_line,"Lambda expressions and closures are not fully supported yet.\n"); $$ = $1; }
| cpp_lambda_decl { Swig_warning(WARN_CPP11_LAMBDA, cparse_file, cparse_line,"Lambda expressions and closures are not fully supported yet.\n"); $$ = $1; }
| USING idcolon EQUAL { skip_decl(); Swig_warning(WARN_CPP11_ALIAS_DECLARATION, cparse_file, cparse_line,"The 'using' keyword in type aliasing is not fully supported yet.\n"); $$ = 0; }
| TEMPLATE LESSTHAN template_parms GREATERTHAN USING idcolon EQUAL { skip_decl(); Swig_warning(WARN_CPP11_ALIAS_TEMPLATE, cparse_file, cparse_line,"The 'using' keyword in template aliasing is not fully supported yet.\n"); $$ = 0; }
;
@ -3290,17 +3292,40 @@ cpp_alternate_rettype : primitive_type { $$ = $1; }
| decltype { $$ = $1; }
;
/* Lambda function syntax introduced in C++0x.
auto myFunc = [](int x, int y) -> int { return x+y; }
OR
auto myFunc = [](int x, int y) { return x+y; }
/*
Lambda functions and expressions, such as:
auto myFunc = [](int x, int y) -> int { return x+y; };
auto myFunc = [](int x, int y) { return x+y; };
auto myFunc = [](int x, int y) { return x+y; }(1, 2);
*/
c_lambda_decl : c_lambda_decl_front LPAREN parms RPAREN cpp_const LBRACE { skip_balanced('{','}'); } SEMI { $$ = 0; }
| c_lambda_decl_front LPAREN parms RPAREN cpp_const ARROW type LBRACE { skip_balanced('{','}'); } SEMI { $$ = 0; }
;
cpp_lambda_decl : storage_class AUTO idcolon EQUAL lambda_introducer LPAREN parms RPAREN cpp_const lambda_body lambda_tail {
$$ = 0;
}
| storage_class AUTO idcolon EQUAL lambda_introducer LPAREN parms RPAREN cpp_const ARROW type lambda_body lambda_tail {
$$ = 0;
}
;
c_lambda_decl_front : storage_class AUTO idcolon EQUAL LBRACKET { skip_balanced('[',']'); $$ = 0; }
lambda_introducer : LBRACKET {
skip_balanced('[',']');
$$ = 0;
}
;
lambda_body : LBRACE {
skip_balanced('{','}');
$$ = 0;
}
lambda_tail : SEMI {
$$ = 0;
}
| LPAREN {
skip_balanced('(',')');
} SEMI {
$$ = 0;
}
;
/* ------------------------------------------------------------
enum