Changeset 185981 in webkit for trunk/Source/JavaScriptCore/parser/SyntaxChecker.h

Timestamp:

Jun 25, 2015, 8:13:25 PM (10 years ago)

Author:

Yusuke Suzuki

Message:

[ES6] Support rest element in destructuring assignments
​https://bugs.webkit.org/show_bug.cgi?id=146206

Reviewed by Oliver Hunt.

This patch enables rest element (...rest) in array binding patterns.
It generates array from the iterables.
In variable declarations and parameters, [...identifier] form is only allowed,
while expressions can take [...[...rest]] pattern.

• bytecompiler/BytecodeGenerator.cpp:

(JSC::BytecodeGenerator::emitEnumeration):
(JSC::BytecodeGenerator::emitIteratorNext):

• bytecompiler/BytecodeGenerator.h:
• bytecompiler/NodesCodegen.cpp:

(JSC::ArrayPatternNode::bindValue):
(JSC::ArrayPatternNode::toString):

• parser/ASTBuilder.h:

(JSC::ASTBuilder::appendArrayPatternSkipEntry):
(JSC::ASTBuilder::appendArrayPatternEntry):
(JSC::ASTBuilder::appendArrayPatternRestEntry):

• parser/Nodes.h:

(JSC::ArrayPatternNode::appendIndex):

• parser/Parser.cpp:

(JSC::Parser<LexerType>::parseDeconstructionPattern):

• parser/SyntaxChecker.h:

(JSC::SyntaxChecker::operatorStackPop):

• tests/stress/rest-elements.js: Added.

(shouldBe):
(shouldThrow):

File:

• trunk/Source/JavaScriptCore/parser/SyntaxChecker.h (modified) (1 diff)

trunk/Source/JavaScriptCore/parser/SyntaxChecker.h

@@ -312 +312 @@
     {
     }
+    void appendArrayPatternRestEntry(ArrayPattern, const JSTokenLocation&, DeconstructionPattern)
+    {
+    }
     void finishArrayPattern(ArrayPattern, const JSTextPosition&, const JSTextPosition&, const JSTextPosition&)
     {