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parse closure

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vadim 2017-11-30 21:14:26 +02:00
parent 9edffc663e
commit b6a04d75aa
2 changed files with 2025 additions and 1805 deletions
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3775
parser.go
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55
parser.y
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@ -308,6 +308,11 @@ func (n node) attribute(key string, value string) node {
%type <node> internal_functions_in_yacc
%type <node> isset_variables
%type <node> isset_variable
%type <node> exit_expr
%type <node> backticks_expr
%type <node> lexical_vars
%type <node> lexical_var_list
%type <node> lexical_var
%%
@ -1021,13 +1026,48 @@ expr_without_variable:
| T_OBJECT_CAST expr { $$ = Node("CastObject").append($2); }
| T_BOOL_CAST expr { $$ = Node("CastBool").append($2); }
| T_UNSET_CAST expr { $$ = Node("CastUnset").append($2); }
| T_EXIT exit_expr { $$ = Node("Exit").append($2); }
| '@' expr { $$ = Node("Silence").append($2); }
| scalar { $$ = $1; }
| '`' backticks_expr '`' { $$ = Node("ShellExec").append($2) }
| T_PRINT expr { $$ = Node("Print").append($2); }
| T_YIELD { $$ = Node("Yield"); }
| T_YIELD expr { $$ = Node("Yield").append($2); }
| T_YIELD expr T_DOUBLE_ARROW expr { $$ = Node("Yield").append($2).append($4); }
| T_YIELD_FROM expr { $$ = Node("YieldFrom").append($2); }
| T_FUNCTION returns_ref '(' parameter_list ')' lexical_vars return_type '{' inner_statement_list '}'
{
$$ = Node("Closure").
attribute("returns_ref", $2).
append($4).
append($6).
append($7).
append($9);
}
| T_STATIC T_FUNCTION returns_ref '(' parameter_list ')' lexical_vars return_type '{' inner_statement_list '}'
{
$$ = Node("StaticClosure").
attribute("returns_ref", $3).
append($5).
append($7).
append($8).
append($10);
}
;
lexical_vars:
/* empty */ { $$ = Node("") }
| T_USE '(' lexical_var_list ')' { $$ = $3; }
;
lexical_var_list:
lexical_var_list ',' lexical_var { $$ = $1.append($3) }
| lexical_var { $$ = Node("ClosureUses").append($1) }
;
lexical_var:
T_VARIABLE { $$ = Node("Variable").attribute("value", $1) }
| '&' T_VARIABLE { $$ = Node("Variable").attribute("value", $2).attribute("ref", "true") }
;
scalar:
@ -1110,6 +1150,17 @@ class_name_reference:
| new_variable { $$ = $1; }
;
exit_expr:
/* empty */ { $$ = Node("") }
| '(' optional_expr ')' { $$ = $2; }
;
backticks_expr:
/* empty */ { $$ = Node("EmptyBackticks") }
| T_ENCAPSED_AND_WHITESPACE { $$ = Node("String").attribute("value", $1) }
| encaps_list { $$ = $1; }
;
variable_class_name:
dereferencable { $$ = $1; }
;
@ -1220,7 +1271,9 @@ new_variable:
%%
const src = `<?php
isset($a, $b);
$a = static function($a) use ($b) {
};
`
func main() {