mirror of
https://repo.dactyloidae.xyz/Dactyloidae/UXP.git
synced 2026-09-05 07:18:39 +09:00
1325157 - Implement a ParserBase class that holds functionality that's identical between syntax parsing and full parsing.
This commit is contained in:
Gaming4JC
Roy Tam
parent
baab6a6ca9
commit
94c6eea52b
2 changed files with 181 additions and 170 deletions
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@ -571,9 +571,8 @@ FunctionBox::initWithEnclosingScope(Scope* enclosingScope)
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computeInWith(enclosingScope);
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}
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template <typename ParseHandler>
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void
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Parser<ParseHandler>::error(unsigned errorNumber, ...)
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ParserBase::error(unsigned errorNumber, ...)
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{
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va_list args;
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va_start(args, errorNumber);
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@ -585,9 +584,8 @@ Parser<ParseHandler>::error(unsigned errorNumber, ...)
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va_end(args);
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}
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template <typename ParseHandler>
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void
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Parser<ParseHandler>::errorAt(uint32_t offset, unsigned errorNumber, ...)
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ParserBase::errorAt(uint32_t offset, unsigned errorNumber, ...)
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{
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va_list args;
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va_start(args, errorNumber);
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@ -599,9 +597,8 @@ Parser<ParseHandler>::errorAt(uint32_t offset, unsigned errorNumber, ...)
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va_end(args);
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}
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template <typename ParseHandler>
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bool
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Parser<ParseHandler>::warning(unsigned errorNumber, ...)
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ParserBase::warning(unsigned errorNumber, ...)
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{
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va_list args;
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va_start(args, errorNumber);
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@ -611,9 +608,8 @@ Parser<ParseHandler>::warning(unsigned errorNumber, ...)
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return result;
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}
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template <typename ParseHandler>
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bool
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Parser<ParseHandler>::warningAt(uint32_t offset, unsigned errorNumber, ...)
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ParserBase::warningAt(uint32_t offset, unsigned errorNumber, ...)
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{
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va_list args;
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va_start(args, errorNumber);
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@ -623,9 +619,8 @@ Parser<ParseHandler>::warningAt(uint32_t offset, unsigned errorNumber, ...)
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return result;
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}
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template <typename ParseHandler>
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bool
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Parser<ParseHandler>::extraWarning(unsigned errorNumber, ...)
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ParserBase::extraWarning(unsigned errorNumber, ...)
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{
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va_list args;
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va_start(args, errorNumber);
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@ -634,9 +629,8 @@ Parser<ParseHandler>::extraWarning(unsigned errorNumber, ...)
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return result;
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}
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template <typename ParseHandler>
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bool
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Parser<ParseHandler>::strictModeError(unsigned errorNumber, ...)
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ParserBase::strictModeError(unsigned errorNumber, ...)
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{
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va_list args;
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va_start(args, errorNumber);
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@ -647,9 +641,8 @@ Parser<ParseHandler>::strictModeError(unsigned errorNumber, ...)
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return res;
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}
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template <typename ParseHandler>
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bool
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Parser<ParseHandler>::strictModeErrorAt(uint32_t offset, unsigned errorNumber, ...)
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ParserBase::strictModeErrorAt(uint32_t offset, unsigned errorNumber, ...)
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{
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va_list args;
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va_start(args, errorNumber);
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@ -659,9 +652,8 @@ Parser<ParseHandler>::strictModeErrorAt(uint32_t offset, unsigned errorNumber, .
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return res;
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}
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template <typename ParseHandler>
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bool
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Parser<ParseHandler>::reportNoOffset(ParseReportKind kind, bool strict, unsigned errorNumber, ...)
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ParserBase::reportNoOffset(ParseReportKind kind, bool strict, unsigned errorNumber, ...)
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{
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va_list args;
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va_start(args, errorNumber);
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@ -702,16 +694,14 @@ Parser<SyntaxParseHandler>::abortIfSyntaxParser()
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return false;
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}
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template <typename ParseHandler>
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Parser<ParseHandler>::Parser(ExclusiveContext* cx, LifoAlloc& alloc,
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const ReadOnlyCompileOptions& options,
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const char16_t* chars, size_t length,
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bool foldConstants,
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UsedNameTracker& usedNames,
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Parser<SyntaxParseHandler>* syntaxParser,
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LazyScript* lazyOuterFunction)
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: AutoGCRooter(cx, PARSER),
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context(cx),
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ParserBase::ParserBase(ExclusiveContext* cx, LifoAlloc& alloc,
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const ReadOnlyCompileOptions& options,
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const char16_t* chars, size_t length,
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bool foldConstants,
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UsedNameTracker& usedNames,
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Parser<SyntaxParseHandler>* syntaxParser,
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LazyScript* lazyOuterFunction)
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: context(cx),
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alloc(alloc),
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tokenStream(cx, options, chars, length, thisForCtor()),
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traceListHead(nullptr),
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@ -725,38 +715,14 @@ Parser<ParseHandler>::Parser(ExclusiveContext* cx, LifoAlloc& alloc,
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checkOptionsCalled(false),
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#endif
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abortedSyntaxParse(false),
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isUnexpectedEOF_(false),
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handler(cx, alloc, tokenStream, syntaxParser, lazyOuterFunction)
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isUnexpectedEOF_(false)
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{
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cx->perThreadData->frontendCollectionPool.addActiveCompilation();
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// The Mozilla specific JSOPTION_EXTRA_WARNINGS option adds extra warnings
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// which are not generated if functions are parsed lazily. Note that the
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// standard "use strict" does not inhibit lazy parsing.
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if (options.extraWarningsOption)
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handler.disableSyntaxParser();
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tempPoolMark = alloc.mark();
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}
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template<typename ParseHandler>
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bool
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Parser<ParseHandler>::checkOptions()
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ParserBase::~ParserBase()
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{
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#ifdef DEBUG
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checkOptionsCalled = true;
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#endif
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if (!tokenStream.checkOptions())
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return false;
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return true;
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}
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template <typename ParseHandler>
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Parser<ParseHandler>::~Parser()
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{
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MOZ_ASSERT(checkOptionsCalled);
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alloc.release(tempPoolMark);
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/*
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@ -769,6 +735,43 @@ Parser<ParseHandler>::~Parser()
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context->perThreadData->frontendCollectionPool.removeActiveCompilation();
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}
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template <typename ParseHandler>
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Parser<ParseHandler>::Parser(ExclusiveContext* cx, LifoAlloc& alloc,
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const ReadOnlyCompileOptions& options,
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const char16_t* chars, size_t length,
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bool foldConstants,
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UsedNameTracker& usedNames,
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Parser<SyntaxParseHandler>* syntaxParser,
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LazyScript* lazyOuterFunction)
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: ParserBase(cx, alloc, options, chars, length, foldConstants, usedNames, syntaxParser,
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lazyOuterFunction),
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AutoGCRooter(cx, PARSER),
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handler(cx, alloc, tokenStream, syntaxParser, lazyOuterFunction)
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{
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// The Mozilla specific JSOPTION_EXTRA_WARNINGS option adds extra warnings
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// which are not generated if functions are parsed lazily. Note that the
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// standard "use strict" does not inhibit lazy parsing.
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if (options.extraWarningsOption)
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handler.disableSyntaxParser();
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}
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template<typename ParseHandler>
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bool
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Parser<ParseHandler>::checkOptions()
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{
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#ifdef DEBUG
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checkOptionsCalled = true;
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#endif
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return tokenStream.checkOptions();
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}
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template <typename ParseHandler>
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Parser<ParseHandler>::~Parser()
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{
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MOZ_ASSERT(checkOptionsCalled);
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}
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template <typename ParseHandler>
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ObjectBox*
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Parser<ParseHandler>::newObjectBox(JSObject* obj)
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@ -897,9 +900,8 @@ Parser<ParseHandler>::parse()
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* Strict mode forbids introducing new definitions for 'eval', 'arguments', or
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* for any strict mode reserved keyword.
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*/
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template <typename ParseHandler>
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bool
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Parser<ParseHandler>::isValidStrictBinding(PropertyName* name)
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ParserBase::isValidStrictBinding(PropertyName* name)
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{
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return name != context->names().eval &&
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name != context->names().arguments &&
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@ -9602,9 +9604,8 @@ Parser<ParseHandler>::exprInParens(InHandling inHandling, YieldHandling yieldHan
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return expr(inHandling, yieldHandling, tripledotHandling, possibleError, PredictInvoked);
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}
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template <typename ParseHandler>
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bool
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Parser<ParseHandler>::warnOnceAboutExprClosure()
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ParserBase::warnOnceAboutExprClosure()
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{
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#ifndef RELEASE_OR_BETA
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JSContext* cx = context->maybeJSContext();
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@ -9620,9 +9621,8 @@ Parser<ParseHandler>::warnOnceAboutExprClosure()
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return true;
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}
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template <typename ParseHandler>
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bool
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Parser<ParseHandler>::warnOnceAboutForEach()
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ParserBase::warnOnceAboutForEach()
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{
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JSContext* cx = context->maybeJSContext();
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if (!cx)
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@ -734,8 +734,138 @@ class UsedNameTracker
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}
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};
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class ParserBase : public StrictModeGetter
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{
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private:
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ParserBase* thisForCtor() { return this; }
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public:
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ExclusiveContext* const context;
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LifoAlloc& alloc;
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TokenStream tokenStream;
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LifoAlloc::Mark tempPoolMark;
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/* list of parsed objects for GC tracing */
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ObjectBox* traceListHead;
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/* innermost parse context (stack-allocated) */
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ParseContext* pc;
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// For tracking used names in this parsing session.
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UsedNameTracker& usedNames;
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/* Compression token for aborting. */
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SourceCompressionTask* sct;
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ScriptSource* ss;
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/* Root atoms and objects allocated for the parsed tree. */
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AutoKeepAtoms keepAtoms;
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/* Perform constant-folding; must be true when interfacing with the emitter. */
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const bool foldConstants:1;
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protected:
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#if DEBUG
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/* Our fallible 'checkOptions' member function has been called. */
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bool checkOptionsCalled:1;
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#endif
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/*
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* Not all language constructs can be handled during syntax parsing. If it
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* is not known whether the parse succeeds or fails, this bit is set and
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* the parse will return false.
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*/
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bool abortedSyntaxParse:1;
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/* Unexpected end of input, i.e. TOK_EOF not at top-level. */
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bool isUnexpectedEOF_:1;
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public:
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ParserBase(ExclusiveContext* cx, LifoAlloc& alloc, const ReadOnlyCompileOptions& options,
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const char16_t* chars, size_t length, bool foldConstants,
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UsedNameTracker& usedNames, Parser<SyntaxParseHandler>* syntaxParser,
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LazyScript* lazyOuterFunction);
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~ParserBase();
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const char* getFilename() const { return tokenStream.getFilename(); }
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JSVersion versionNumber() const { return tokenStream.versionNumber(); }
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TokenPos pos() const { return tokenStream.currentToken().pos; }
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// Determine whether |yield| is a valid name in the current context, or
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// whether it's prohibited due to strictness, JS version, or occurrence
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// inside a star generator.
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bool yieldExpressionsSupported() {
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return (versionNumber() >= JSVERSION_1_7 || pc->isGenerator()) && !pc->isAsync();
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}
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virtual bool strictMode() { return pc->sc()->strict(); }
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bool setLocalStrictMode(bool strict) {
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MOZ_ASSERT(tokenStream.debugHasNoLookahead());
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return pc->sc()->setLocalStrictMode(strict);
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}
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const ReadOnlyCompileOptions& options() const {
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return tokenStream.options();
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}
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bool hadAbortedSyntaxParse() {
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return abortedSyntaxParse;
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}
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void clearAbortedSyntaxParse() {
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abortedSyntaxParse = false;
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}
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bool isUnexpectedEOF() const { return isUnexpectedEOF_; }
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bool reportNoOffset(ParseReportKind kind, bool strict, unsigned errorNumber, ...);
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/* Report the given error at the current offset. */
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void error(unsigned errorNumber, ...);
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/* Report the given error at the given offset. */
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void errorAt(uint32_t offset, unsigned errorNumber, ...);
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/*
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* Handle a strict mode error at the current offset. Report an error if in
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* strict mode code, or warn if not, using the given error number and
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* arguments.
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*/
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MOZ_MUST_USE bool strictModeError(unsigned errorNumber, ...);
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/*
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* Handle a strict mode error at the given offset. Report an error if in
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* strict mode code, or warn if not, using the given error number and
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* arguments.
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*/
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MOZ_MUST_USE bool strictModeErrorAt(uint32_t offset, unsigned errorNumber, ...);
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/* Report the given warning at the current offset. */
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MOZ_MUST_USE bool warning(unsigned errorNumber, ...);
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/* Report the given warning at the given offset. */
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MOZ_MUST_USE bool warningAt(uint32_t offset, unsigned errorNumber, ...);
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/*
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* If extra warnings are enabled, report the given warning at the current
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* offset.
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*/
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MOZ_MUST_USE bool extraWarning(unsigned errorNumber, ...);
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bool isValidStrictBinding(PropertyName* name);
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bool warnOnceAboutExprClosure();
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bool warnOnceAboutForEach();
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protected:
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enum InvokedPrediction { PredictUninvoked = false, PredictInvoked = true };
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enum ForInitLocation { InForInit, NotInForInit };
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};
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template <typename ParseHandler>
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class Parser final : private JS::AutoGCRooter, public StrictModeGetter
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class Parser final : public ParserBase, private JS::AutoGCRooter
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{
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private:
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using Node = typename ParseHandler::Node;
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@ -852,50 +982,6 @@ class Parser final : private JS::AutoGCRooter, public StrictModeGetter
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void transferErrorsTo(PossibleError* other);
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};
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public:
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ExclusiveContext* const context;
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LifoAlloc& alloc;
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TokenStream tokenStream;
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LifoAlloc::Mark tempPoolMark;
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/* list of parsed objects for GC tracing */
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ObjectBox* traceListHead;
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/* innermost parse context (stack-allocated) */
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ParseContext* pc;
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// For tracking used names in this parsing session.
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UsedNameTracker& usedNames;
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/* Compression token for aborting. */
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SourceCompressionTask* sct;
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ScriptSource* ss;
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/* Root atoms and objects allocated for the parsed tree. */
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AutoKeepAtoms keepAtoms;
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/* Perform constant-folding; must be true when interfacing with the emitter. */
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const bool foldConstants:1;
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private:
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#if DEBUG
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/* Our fallible 'checkOptions' member function has been called. */
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bool checkOptionsCalled:1;
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#endif
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/*
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* Not all language constructs can be handled during syntax parsing. If it
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* is not known whether the parse succeeds or fails, this bit is set and
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* the parse will return false.
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*/
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bool abortedSyntaxParse:1;
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/* Unexpected end of input, i.e. TOK_EOF not at top-level. */
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bool isUnexpectedEOF_:1;
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public:
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/* State specific to the kind of parse being performed. */
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ParseHandler handler;
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@ -904,40 +990,6 @@ class Parser final : private JS::AutoGCRooter, public StrictModeGetter
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void freeTree(Node node) { handler.freeTree(node); }
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public:
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bool reportNoOffset(ParseReportKind kind, bool strict, unsigned errorNumber, ...);
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/* Report the given error at the current offset. */
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void error(unsigned errorNumber, ...);
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/* Report the given error at the given offset. */
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void errorAt(uint32_t offset, unsigned errorNumber, ...);
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/*
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* Handle a strict mode error at the current offset. Report an error if in
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* strict mode code, or warn if not, using the given error number and
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* arguments.
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*/
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MOZ_MUST_USE bool strictModeError(unsigned errorNumber, ...);
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/*
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* Handle a strict mode error at the given offset. Report an error if in
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* strict mode code, or warn if not, using the given error number and
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* arguments.
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*/
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MOZ_MUST_USE bool strictModeErrorAt(uint32_t offset, unsigned errorNumber, ...);
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/* Report the given warning at the current offset. */
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MOZ_MUST_USE bool warning(unsigned errorNumber, ...);
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/* Report the given warning at the given offset. */
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MOZ_MUST_USE bool warningAt(uint32_t offset, unsigned errorNumber, ...);
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/*
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* If extra warnings are enabled, report the given warning at the current
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* offset.
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*/
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MOZ_MUST_USE bool extraWarning(unsigned errorNumber, ...);
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Parser(ExclusiveContext* cx, LifoAlloc& alloc, const ReadOnlyCompileOptions& options,
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const char16_t* chars, size_t length, bool foldConstants, UsedNameTracker& usedNames,
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Parser<SyntaxParseHandler>* syntaxParser, LazyScript* lazyOuterFunction);
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@ -967,9 +1019,6 @@ class Parser final : private JS::AutoGCRooter, public StrictModeGetter
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friend void js::frontend::MarkParser(JSTracer* trc, JS::AutoGCRooter* parser);
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const char* getFilename() const { return tokenStream.getFilename(); }
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JSVersion versionNumber() const { return tokenStream.versionNumber(); }
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/*
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* Parse a top-level JS script.
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*/
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@ -995,15 +1044,6 @@ class Parser final : private JS::AutoGCRooter, public StrictModeGetter
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void trace(JSTracer* trc);
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bool hadAbortedSyntaxParse() {
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return abortedSyntaxParse;
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}
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void clearAbortedSyntaxParse() {
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abortedSyntaxParse = false;
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}
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bool isUnexpectedEOF() const { return isUnexpectedEOF_; }
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bool checkUnescapedName();
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private:
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@ -1072,34 +1112,12 @@ class Parser final : private JS::AutoGCRooter, public StrictModeGetter
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|||
Node pn, FunctionSyntaxKind kind,
|
||||
mozilla::Maybe<uint32_t> parameterListEnd = mozilla::Nothing(),
|
||||
bool isStandaloneFunction = false);
|
||||
|
||||
|
||||
// Determine whether |yield| is a valid name in the current context, or
|
||||
// whether it's prohibited due to strictness, JS version, or occurrence
|
||||
// inside a star generator.
|
||||
bool yieldExpressionsSupported() {
|
||||
return (versionNumber() >= JSVERSION_1_7 || pc->isGenerator()) && !pc->isAsync();
|
||||
}
|
||||
|
||||
// Match the current token against the BindingIdentifier production with
|
||||
// the given Yield parameter. If there is no match, report a syntax
|
||||
// error.
|
||||
PropertyName* bindingIdentifier(YieldHandling yieldHandling);
|
||||
|
||||
virtual bool strictMode() { return pc->sc()->strict(); }
|
||||
bool setLocalStrictMode(bool strict) {
|
||||
MOZ_ASSERT(tokenStream.debugHasNoLookahead());
|
||||
return pc->sc()->setLocalStrictMode(strict);
|
||||
}
|
||||
|
||||
const ReadOnlyCompileOptions& options() const {
|
||||
return tokenStream.options();
|
||||
}
|
||||
|
||||
private:
|
||||
enum InvokedPrediction { PredictUninvoked = false, PredictInvoked = true };
|
||||
enum ForInitLocation { InForInit, NotInForInit };
|
||||
|
||||
private:
|
||||
/*
|
||||
* JS parsers, from lowest to highest precedence.
|
||||
|
|
@ -1375,8 +1393,6 @@ class Parser final : private JS::AutoGCRooter, public StrictModeGetter
|
|||
|
||||
bool hasValidSimpleStrictParameterNames();
|
||||
|
||||
bool isValidStrictBinding(PropertyName* name);
|
||||
|
||||
void reportRedeclaration(HandlePropertyName name, DeclarationKind kind, TokenPos pos);
|
||||
bool notePositionalFormalParameter(Node fn, HandlePropertyName name,
|
||||
bool disallowDuplicateParams, bool* duplicatedParam);
|
||||
|
|
@ -1432,12 +1448,7 @@ class Parser final : private JS::AutoGCRooter, public StrictModeGetter
|
|||
|
||||
JSAtom* prefixAccessorName(PropertyType propType, HandleAtom propAtom);
|
||||
|
||||
TokenPos pos() const { return tokenStream.currentToken().pos; }
|
||||
|
||||
bool asmJS(Node list);
|
||||
|
||||
bool warnOnceAboutExprClosure();
|
||||
bool warnOnceAboutForEach();
|
||||
};
|
||||
|
||||
} /* namespace frontend */
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue