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compile for-in

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* module/language/ecmascript/base.scm (prop-keys): New method, returns
  the list of keys of props of this instance.

* module/language/ecmascript/impl.scm: Refactor the global object into a
  special kind of module object. Provide a prop-keys implementation for
  module objects.

* module/language/ecmascript/compile-ghil.scm (comp): Compile for-in.

* module/language/ecmascript/impl.scm: Reshuffly things, and implement
  make-enumerator, a helper for use in for-in statements.

* module/language/ecmascript/parse.scm (parse-ecmascript): Fix parsing of
  for (var foo in bar) {}...
This commit is contained in:
Andy Wingo 2009-02-22 16:01:11 +01:00
parent bb67fe27ab
commit e05320fa54
4 changed files with 65 additions and 27 deletions
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module/language/ecmascript/parse.scm
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@ -135,7 +135,7 @@
(for lparen var VariableDeclarationListNoIn semicolon Expression semicolon Expression rparen Statement) -> `(for (var ,@$4) ,$6 ,$8 ,$10)
(for lparen LeftHandSideExpression in Expression rparen Statement) -> `(for-in ,$3 ,$5 ,$7)
(for lparen var VariableDeclarationNoIn in Expression rparen Statement) -> `(for-in ,$4 ,$6 ,$8))
(for lparen var VariableDeclarationNoIn in Expression rparen Statement) -> `(begin (var ,$4) (for-in (ref ,@$4) ,$6 ,$8)))
(ContinueStatement (continue Identifier semicolon) -> `(continue ,$2)
(continue semicolon) -> `(continue))