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parse For stmt

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z7zmey 2017-11-28 22:17:11 +02:00
parent 6a15c6990a
commit f4f82a371f
2 changed files with 929 additions and 824 deletions
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1723
parser.go
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28
parser.y
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@ -203,6 +203,9 @@ func (n node) attribute(key string, value string) node {
%type <node> alt_if_stmt_without_else
%type <node> alt_if_stmt
%type <node> while_statement
%type <node> for_exprs
%type <node> non_empty_for_exprs
%type <node> for_statement
%%
@ -276,6 +279,14 @@ statement:
| alt_if_stmt { $$ = $1; }
| T_WHILE '(' expr ')' while_statement { $$ = Node("While").append(Node("expr").append($3)).append(Node("stmt").append($5)) }
| T_DO statement T_WHILE '(' expr ')' ';' { $$ = Node("DoWhile").append(Node("expr").append($5)).append(Node("stmt").append($2))}
| T_FOR '(' for_exprs ';' for_exprs ';' for_exprs ')' for_statement
{
$$ = Node("For").
append(Node("expr1").append($3)).
append(Node("expr2").append($5)).
append(Node("expr3").append($7)).
append(Node("stmt").append($9))
}
| expr ';' { $$ = $1; }
if_stmt_without_else:
@ -321,6 +332,19 @@ while_statement:
| ':' inner_statement_list T_ENDWHILE ';' { $$ = $2; }
;
for_exprs:
/* empty */ { $$ = Node("null"); }
| non_empty_for_exprs { $$ = $1; }
;
non_empty_for_exprs:
non_empty_for_exprs ',' expr { $$ = $1.append($3) }
| expr { $$ = Node("ExpressionList").append($1) }
;
for_statement:
statement { $$ = $1; }
| ':' inner_statement_list T_ENDFOR ';' { $$ = $2; }
;
class_declaration_statement:
class_modifiers T_CLASS T_STRING '{' '}' { $$ = $1.attribute("name", $3) }
@ -515,9 +539,9 @@ simple_variable:
const src = `<?
do {
for ($a = $b;;) :
} while ($a >= $b || $a < $c);
endfor;
`