Implement prefixed-destructuring assignment
https://bugs.webkit.org/show_bug.cgi?id=121930
Reviewed by Mark Hahnenberg.
Source/JavaScriptCore:
Relanding with fix after rollout - it helps to not completely destroy
optimisations for no reason.
LayoutTests:
Relanding with fix after rollout - it helps to not completely destroy
optimisations for no reason.
git-svn-id: http://svn.webkit.org/repository/webkit/trunk@156785 268f45cc-cd09-0410-ab3c-d52691b4dbfc
diff --git a/Source/JavaScriptCore/parser/SyntaxChecker.h b/Source/JavaScriptCore/parser/SyntaxChecker.h
index 9929caf..965ff0d 100644
--- a/Source/JavaScriptCore/parser/SyntaxChecker.h
+++ b/Source/JavaScriptCore/parser/SyntaxChecker.h
@@ -111,7 +111,10 @@
typedef int Clause;
typedef int ConstDeclList;
typedef int BinaryOperand;
-
+ typedef int DeconstructionPattern;
+ typedef int ArrayPattern;
+ typedef int ObjectPattern;
+
static const bool CreatesAST = false;
static const bool NeedsFreeVariableInfo = false;
static const bool CanUseFunctionCache = true;
@@ -173,8 +176,8 @@
int createPropertyList(const JSTokenLocation&, Property, int) { return 1; }
int createElementList(int, int) { return 1; }
int createElementList(int, int, int) { return 1; }
- int createFormalParameterList(const Identifier&) { return 1; }
- int createFormalParameterList(int, const Identifier&) { return 1; }
+ int createFormalParameterList(DeconstructionPattern) { return 1; }
+ int createFormalParameterList(int, DeconstructionPattern) { return 1; }
int createClause(int, int) { return 1; }
int createClauseList(int) { return 1; }
int createClauseList(int, int) { return 1; }
@@ -185,7 +188,6 @@
int createIfStatement(const JSTokenLocation&, int, int, int, int) { return 1; }
int createIfStatement(const JSTokenLocation&, int, int, int, int, int) { return 1; }
int createForLoop(const JSTokenLocation&, int, int, int, int, int, int) { return 1; }
- int createForInLoop(const JSTokenLocation&, const Identifier*, int, int, int, int, int, int, int) { return 1; }
int createForInLoop(const JSTokenLocation&, int, int, int, int, int, int, int, int) { return 1; }
int createEmptyStatement(const JSTokenLocation&) { return 1; }
int createVarStatement(const JSTokenLocation&, int, int, int) { return 1; }
@@ -250,7 +252,32 @@
const Identifier& getName(const Property& property) const { ASSERT(property.name); return *property.name; }
PropertyNode::Type getType(const Property& property) const { return property.type; }
bool isResolve(ExpressionType expr) const { return expr == ResolveExpr || expr == ResolveEvalExpr; }
+ ExpressionType createDeconstructingAssignment(const JSTokenLocation&, int, ExpressionType)
+ {
+ return 1;
+ }
+ ArrayPattern createArrayPattern(const JSTokenLocation&)
+ {
+ return 1;
+ }
+ void appendArrayPatternSkipEntry(ArrayPattern, const JSTokenLocation&)
+ {
+ }
+ void appendArrayPatternEntry(ArrayPattern, const JSTokenLocation&, DeconstructionPattern)
+ {
+ }
+ ObjectPattern createObjectPattern(const JSTokenLocation&)
+ {
+ return 1;
+ }
+ void appendObjectPatternEntry(ArrayPattern, const JSTokenLocation&, bool, const Identifier&, DeconstructionPattern)
+ {
+ }
+ DeconstructionPattern createBindingLocation(const JSTokenLocation&, const Identifier&, const JSTextPosition&, const JSTextPosition&, const JSTextPosition&)
+ {
+ return 1;
+ }
private:
int m_topBinaryExpr;
int m_topUnaryToken;
