| // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| #ifndef VM_PARSER_H_ |
| #define VM_PARSER_H_ |
| |
| #include "include/dart_api.h" |
| |
| #include "platform/assert.h" |
| #include "platform/globals.h" |
| #include "lib/invocation_mirror.h" |
| #include "vm/allocation.h" |
| #include "vm/ast.h" |
| #include "vm/class_finalizer.h" |
| #include "vm/compiler_stats.h" |
| #include "vm/object.h" |
| #include "vm/raw_object.h" |
| #include "vm/token.h" |
| |
| namespace dart { |
| |
| // Forward declarations. |
| class ArgumentsDescriptor; |
| class Isolate; |
| class LocalScope; |
| class LocalVariable; |
| struct RegExpCompileData; |
| class SourceLabel; |
| template <typename T> class GrowableArray; |
| class Parser; |
| |
| struct CatchParamDesc; |
| class ClassDesc; |
| struct MemberDesc; |
| struct ParamList; |
| struct QualIdent; |
| struct TopLevel; |
| |
| // The class ParsedFunction holds the result of parsing a function. |
| class ParsedFunction : public ZoneAllocated { |
| public: |
| ParsedFunction(Thread* thread, const Function& function) |
| : thread_(thread), |
| function_(function), |
| code_(Code::Handle(zone(), function.unoptimized_code())), |
| node_sequence_(NULL), |
| regexp_compile_data_(NULL), |
| instantiator_(NULL), |
| default_parameter_values_(Array::ZoneHandle(zone(), Array::null())), |
| current_context_var_(NULL), |
| expression_temp_var_(NULL), |
| finally_return_temp_var_(NULL), |
| deferred_prefixes_(new ZoneGrowableArray<const LibraryPrefix*>()), |
| guarded_fields_(new ZoneGrowableArray<const Field*>()), |
| first_parameter_index_(0), |
| first_stack_local_index_(0), |
| num_copied_params_(0), |
| num_stack_locals_(0), |
| have_seen_await_expr_(false) { |
| ASSERT(function.IsZoneHandle()); |
| // Every function has a local variable for the current context. |
| LocalVariable* temp = new(zone()) LocalVariable( |
| function.token_pos(), |
| Symbols::CurrentContextVar(), |
| Type::ZoneHandle(zone(), Type::DynamicType())); |
| ASSERT(temp != NULL); |
| current_context_var_ = temp; |
| } |
| |
| const Function& function() const { return function_; } |
| const Code& code() const { return code_; } |
| |
| SequenceNode* node_sequence() const { return node_sequence_; } |
| void SetNodeSequence(SequenceNode* node_sequence); |
| |
| RegExpCompileData* regexp_compile_data() const { |
| return regexp_compile_data_; |
| } |
| void SetRegExpCompileData(RegExpCompileData* regexp_compile_data); |
| |
| LocalVariable* instantiator() const { return instantiator_; } |
| void set_instantiator(LocalVariable* instantiator) { |
| // May be NULL. |
| instantiator_ = instantiator; |
| } |
| |
| const Array& default_parameter_values() const { |
| return default_parameter_values_; |
| } |
| void set_default_parameter_values(const Array& default_parameter_values) { |
| ASSERT(default_parameter_values.IsZoneHandle() || |
| default_parameter_values.InVMHeap()); |
| default_parameter_values_ = default_parameter_values.raw(); |
| } |
| |
| LocalVariable* current_context_var() const { |
| return current_context_var_; |
| } |
| |
| LocalVariable* expression_temp_var() const { |
| ASSERT(has_expression_temp_var()); |
| return expression_temp_var_; |
| } |
| void set_expression_temp_var(LocalVariable* value) { |
| ASSERT(!has_expression_temp_var()); |
| expression_temp_var_ = value; |
| } |
| bool has_expression_temp_var() const { |
| return expression_temp_var_ != NULL; |
| } |
| |
| LocalVariable* finally_return_temp_var() const { |
| ASSERT(has_finally_return_temp_var()); |
| return finally_return_temp_var_; |
| } |
| void set_finally_return_temp_var(LocalVariable* value) { |
| ASSERT(!has_finally_return_temp_var()); |
| finally_return_temp_var_ = value; |
| } |
| bool has_finally_return_temp_var() const { |
| return finally_return_temp_var_ != NULL; |
| } |
| void EnsureFinallyReturnTemp(bool is_async); |
| |
| LocalVariable* EnsureExpressionTemp(); |
| |
| bool HasDeferredPrefixes() const { return deferred_prefixes_->length() != 0; } |
| ZoneGrowableArray<const LibraryPrefix*>* deferred_prefixes() const { |
| return deferred_prefixes_; |
| } |
| void AddDeferredPrefix(const LibraryPrefix& prefix); |
| |
| ZoneGrowableArray<const Field*>* guarded_fields() const { |
| return guarded_fields_; |
| } |
| |
| int first_parameter_index() const { return first_parameter_index_; } |
| int first_stack_local_index() const { return first_stack_local_index_; } |
| int num_copied_params() const { return num_copied_params_; } |
| int num_stack_locals() const { return num_stack_locals_; } |
| int num_non_copied_params() const { |
| return (num_copied_params_ == 0) |
| ? function().num_fixed_parameters() : 0; |
| } |
| |
| void AllocateVariables(); |
| void AllocateIrregexpVariables(intptr_t num_stack_locals); |
| |
| void record_await() { have_seen_await_expr_ = true; } |
| bool have_seen_await() const { return have_seen_await_expr_; } |
| |
| Thread* thread() const { return thread_; } |
| Isolate* isolate() const { return thread()->isolate(); } |
| Zone* zone() const { return thread()->zone(); } |
| |
| private: |
| Thread* thread_; |
| const Function& function_; |
| Code& code_; |
| SequenceNode* node_sequence_; |
| RegExpCompileData* regexp_compile_data_; |
| LocalVariable* instantiator_; |
| Array& default_parameter_values_; |
| LocalVariable* current_context_var_; |
| LocalVariable* expression_temp_var_; |
| LocalVariable* finally_return_temp_var_; |
| ZoneGrowableArray<const LibraryPrefix*>* deferred_prefixes_; |
| ZoneGrowableArray<const Field*>* guarded_fields_; |
| |
| int first_parameter_index_; |
| int first_stack_local_index_; |
| int num_copied_params_; |
| int num_stack_locals_; |
| bool have_seen_await_expr_; |
| |
| friend class Parser; |
| DISALLOW_COPY_AND_ASSIGN(ParsedFunction); |
| }; |
| |
| |
| class Parser : public ValueObject { |
| public: |
| // Parse the top level of a whole script file and register declared classes |
| // in the given library. |
| static void ParseCompilationUnit(const Library& library, |
| const Script& script); |
| |
| // Parse top level of a class and register all functions/fields. |
| static void ParseClass(const Class& cls); |
| |
| static void ParseFunction(ParsedFunction* parsed_function); |
| |
| // Parse and evaluate the metadata expressions at token_pos in the |
| // class namespace of class cls (which can be the implicit toplevel |
| // class if the metadata is at the top-level). |
| static RawObject* ParseMetadata(const Class& cls, intptr_t token_pos); |
| |
| // Build a function containing the initializer expression of the |
| // given static field. |
| static ParsedFunction* ParseStaticFieldInitializer(const Field& field); |
| |
| // Returns a RawFunction or RawError. |
| static RawObject* ParseFunctionFromSource(const Class& owning_class, |
| const String& source); |
| |
| // Parse a function to retrieve parameter information that is not retained in |
| // the dart::Function object. Returns either an error if the parse fails |
| // (which could be the case for local functions), or a flat array of entries |
| // for each parameter. Each parameter entry contains: |
| // * a Dart bool indicating whether the parameter was declared final |
| // * its default value (or null if none was declared) |
| // * an array of metadata (or null if no metadata was declared). |
| enum { |
| kParameterIsFinalOffset, |
| kParameterDefaultValueOffset, |
| kParameterMetadataOffset, |
| kParameterEntrySize, |
| }; |
| static RawObject* ParseFunctionParameters(const Function& func); |
| |
| private: |
| friend class EffectGraphVisitor; // For BuildNoSuchMethodArguments. |
| |
| struct Block; |
| class TryStack; |
| |
| Parser(const Script& script, const Library& library, intptr_t token_pos); |
| Parser(const Script& script, ParsedFunction* function, intptr_t token_pos); |
| ~Parser(); |
| |
| // The function for which we will generate code. |
| const Function& current_function() const; |
| |
| // The innermost function being parsed. |
| const Function& innermost_function() const; |
| |
| // Note that a local function may be parsed multiple times. It is first parsed |
| // when its outermost enclosing function is being parsed. It is then parsed |
| // again when an enclosing function calls this local function or calls |
| // another local function enclosing it. Code for the local function will only |
| // be generated the last time the local function is parsed, i.e. when it is |
| // invoked. For example, a local function nested in another local function, |
| // itself nested in a static function, is parsed 3 times (unless it does not |
| // end up being invoked). |
| // Now, current_function() always points to the outermost function being |
| // compiled (i.e. the function that is being invoked), and is not updated |
| // while parsing a nested function of that outermost function. |
| // Therefore, the statements being parsed may or may not belong to the body |
| // of the current_function(); they may belong to nested functions. |
| // innermost_function() is the function that is currently being parsed. |
| // It is either the same as current_function(), or a lexically nested |
| // function. |
| // The function level of the current parsing scope reflects the function |
| // nesting. The function level is zero while parsing the body of the |
| // current_function(), but is greater than zero while parsing the body of |
| // local functions nested in current_function(). |
| |
| // The class being parsed. |
| const Class& current_class() const; |
| void set_current_class(const Class& value); |
| |
| // ParsedFunction accessor. |
| ParsedFunction* parsed_function() const { |
| return parsed_function_; |
| } |
| |
| const Script& script() const { return script_; } |
| void SetScript(const Script& script, intptr_t token_pos); |
| |
| const Library& library() const { return library_; } |
| void set_library(const Library& value) const { library_ = value.raw(); } |
| |
| // Parsing a library or a regular source script. |
| bool is_library_source() const { |
| return (script_.kind() == RawScript::kScriptTag) || |
| (script_.kind() == RawScript::kLibraryTag); |
| } |
| |
| bool is_part_source() const { |
| return script_.kind() == RawScript::kSourceTag; |
| } |
| |
| // Parsing library patch script. |
| bool is_patch_source() const { |
| return script_.kind() == RawScript::kPatchTag; |
| } |
| |
| intptr_t TokenPos() const { return tokens_iterator_.CurrentPosition(); } |
| |
| Token::Kind CurrentToken() { |
| if (token_kind_ == Token::kILLEGAL) { |
| ComputeCurrentToken(); |
| } |
| CompilerStats::num_token_checks++; |
| return token_kind_; |
| } |
| |
| void ComputeCurrentToken(); |
| |
| RawLibraryPrefix* ParsePrefix(); |
| |
| Token::Kind LookaheadToken(int num_tokens); |
| String* CurrentLiteral() const; |
| RawDouble* CurrentDoubleLiteral() const; |
| RawInteger* CurrentIntegerLiteral() const; |
| |
| // Sets parser to given token position in the stream. |
| void SetPosition(intptr_t position); |
| |
| void ConsumeToken() { |
| // Reset cache and advance the token. |
| token_kind_ = Token::kILLEGAL; |
| tokens_iterator_.Advance(); |
| CompilerStats::num_tokens_consumed++; |
| } |
| void ConsumeRightAngleBracket(); |
| void CheckToken(Token::Kind token_expected, const char* msg = NULL); |
| void ExpectToken(Token::Kind token_expected); |
| void ExpectSemicolon(); |
| void UnexpectedToken(); |
| String* ExpectUserDefinedTypeIdentifier(const char* msg); |
| String* ExpectIdentifier(const char* msg); |
| bool IsAwaitKeyword(); |
| bool IsYieldKeyword(); |
| |
| void SkipIf(Token::Kind); |
| void SkipBlock(); |
| intptr_t SkipMetadata(); |
| void SkipToMatchingParenthesis(); |
| void SkipTypeArguments(); |
| void SkipType(bool allow_void); |
| void SkipInitializers(); |
| void SkipExpr(); |
| void SkipNestedExpr(); |
| void SkipConditionalExpr(); |
| void SkipBinaryExpr(); |
| void SkipUnaryExpr(); |
| void SkipPostfixExpr(); |
| void SkipSelectors(); |
| void SkipPrimary(); |
| void SkipCompoundLiteral(); |
| void SkipSymbolLiteral(); |
| void SkipNewOperator(); |
| void SkipActualParameters(); |
| void SkipMapLiteral(); |
| void SkipListLiteral(); |
| void SkipFunctionLiteral(); |
| void SkipStringLiteral(); |
| void SkipQualIdent(); |
| void SkipFunctionPreamble(); |
| |
| void CheckConstructorCallTypeArguments(intptr_t pos, |
| const Function& constructor, |
| const TypeArguments& type_arguments); |
| |
| // Report already formatted error. |
| static void ReportError(const Error& error); |
| |
| // Concatenate and report an already formatted error and a new error message. |
| static void ReportErrors(const Error& prev_error, |
| const Script& script, intptr_t token_pos, |
| const char* format, ...) PRINTF_ATTRIBUTE(4, 5); |
| |
| // Report error message at location of current token in current script. |
| void ReportError(const char* msg, ...) const PRINTF_ATTRIBUTE(2, 3); |
| |
| // Report error message at given location in current script. |
| void ReportError(intptr_t token_pos, |
| const char* msg, ...) const PRINTF_ATTRIBUTE(3, 4); |
| |
| // Report warning message at location of current token in current script. |
| void ReportWarning(const char* msg, ...) const PRINTF_ATTRIBUTE(2, 3); |
| |
| // Report warning message at given location in current script. |
| void ReportWarning(intptr_t token_pos, |
| const char* msg, ...) const PRINTF_ATTRIBUTE(3, 4); |
| |
| void CheckRecursiveInvocation(); |
| |
| const Instance& EvaluateConstExpr(intptr_t expr_pos, AstNode* expr); |
| AstNode* RunStaticFieldInitializer(const Field& field, |
| intptr_t field_ref_pos); |
| RawObject* EvaluateConstConstructorCall(const Class& type_class, |
| const TypeArguments& type_arguments, |
| const Function& constructor, |
| ArgumentListNode* arguments); |
| AstNode* FoldConstExpr(intptr_t expr_pos, AstNode* expr); |
| |
| // Support for parsing of scripts. |
| void ParseTopLevel(); |
| void ParseEnumDeclaration(const GrowableObjectArray& pending_classes, |
| const Class& toplevel_class, |
| intptr_t metadata_pos); |
| void ParseEnumDefinition(const Class& cls); |
| void ParseClassDeclaration(const GrowableObjectArray& pending_classes, |
| const Class& toplevel_class, |
| intptr_t metadata_pos); |
| void ParseClassDefinition(const Class& cls); |
| void ParseMixinAppAlias(const GrowableObjectArray& pending_classes, |
| const Class& toplevel_class, |
| intptr_t metadata_pos); |
| void ParseTypedef(const GrowableObjectArray& pending_classes, |
| const Class& toplevel_class, |
| intptr_t metadata_pos); |
| void ParseTopLevelVariable(TopLevel* top_level, intptr_t metadata_pos); |
| void ParseTopLevelFunction(TopLevel* top_level, intptr_t metadata_pos); |
| void ParseTopLevelAccessor(TopLevel* top_level, intptr_t metadata_pos); |
| RawArray* EvaluateMetadata(); |
| |
| RawFunction::AsyncModifier ParseFunctionModifier(); |
| |
| // Support for parsing libraries. |
| RawObject* CallLibraryTagHandler(Dart_LibraryTag tag, |
| intptr_t token_pos, |
| const String& url); |
| void ParseIdentList(GrowableObjectArray* names); |
| void ParseLibraryDefinition(); |
| void ParseLibraryName(); |
| void ParseLibraryImportExport(intptr_t metadata_pos); |
| void ParseLibraryPart(); |
| void ParsePartHeader(); |
| void ParseLibraryNameObsoleteSyntax(); |
| void ParseLibraryImportObsoleteSyntax(); |
| void ParseLibraryIncludeObsoleteSyntax(); |
| |
| void ResolveTypeFromClass(const Class& cls, |
| ClassFinalizer::FinalizationKind finalization, |
| AbstractType* type); |
| RawAbstractType* ParseType(ClassFinalizer::FinalizationKind finalization, |
| bool allow_deferred_type = false, |
| bool consume_unresolved_prefix = true); |
| void ParseTypeParameters(const Class& cls); |
| RawTypeArguments* ParseTypeArguments( |
| ClassFinalizer::FinalizationKind finalization); |
| void ParseMethodOrConstructor(ClassDesc* members, MemberDesc* method); |
| void ParseFieldDefinition(ClassDesc* members, MemberDesc* field); |
| void CheckMemberNameConflict(ClassDesc* members, MemberDesc* member); |
| void ParseClassMemberDefinition(ClassDesc* members, |
| intptr_t metadata_pos); |
| void ParseFormalParameter(bool allow_explicit_default_value, |
| bool evaluate_metadata, |
| ParamList* params); |
| void ParseFormalParameters(bool allow_explicit_default_values, |
| bool evaluate_metadata, |
| ParamList* params); |
| void ParseFormalParameterList(bool allow_explicit_default_values, |
| bool evaluate_metadata, |
| ParamList* params); |
| void CheckFieldsInitialized(const Class& cls); |
| void AddImplicitConstructor(const Class& cls); |
| void CheckConstructors(ClassDesc* members); |
| AstNode* ParseExternalInitializedField(const Field& field); |
| void ParseInitializedInstanceFields( |
| const Class& cls, |
| LocalVariable* receiver, |
| GrowableArray<Field*>* initialized_fields); |
| AstNode* CheckDuplicateFieldInit( |
| intptr_t init_pos, |
| GrowableArray<Field*>* initialized_fields, |
| AstNode* instance, |
| Field* field, |
| AstNode* init_value); |
| void GenerateSuperConstructorCall(const Class& cls, |
| intptr_t supercall_pos, |
| LocalVariable* receiver, |
| AstNode* phase_parameter, |
| ArgumentListNode* forwarding_args); |
| AstNode* ParseSuperInitializer(const Class& cls, LocalVariable* receiver); |
| AstNode* ParseInitializer(const Class& cls, |
| LocalVariable* receiver, |
| GrowableArray<Field*>* initialized_fields); |
| void ParseConstructorRedirection(const Class& cls, LocalVariable* receiver); |
| void ParseInitializers(const Class& cls, |
| LocalVariable* receiver, |
| GrowableArray<Field*>* initialized_fields); |
| String& ParseNativeDeclaration(); |
| void ParseInterfaceList(const Class& cls); |
| RawAbstractType* ParseMixins(const AbstractType& super_type); |
| static StaticCallNode* BuildInvocationMirrorAllocation( |
| intptr_t call_pos, |
| const String& function_name, |
| const ArgumentListNode& function_args, |
| const LocalVariable* temp, |
| bool is_super_invocation); |
| // Build arguments for a NoSuchMethodCall. If LocalVariable temp is not NULL, |
| // the last argument is stored in temp. |
| static ArgumentListNode* BuildNoSuchMethodArguments( |
| intptr_t call_pos, |
| const String& function_name, |
| const ArgumentListNode& function_args, |
| const LocalVariable* temp, |
| bool is_super_invocation); |
| RawFunction* GetSuperFunction(intptr_t token_pos, |
| const String& name, |
| ArgumentListNode* arguments, |
| bool resolve_getter, |
| bool* is_no_such_method); |
| AstNode* ParseSuperCall(const String& function_name); |
| AstNode* ParseSuperFieldAccess(const String& field_name, intptr_t field_pos); |
| AstNode* ParseSuperOperator(); |
| AstNode* BuildUnarySuperOperator(Token::Kind op, PrimaryNode* super); |
| |
| static void SetupDefaultsForOptionalParams(const ParamList* params, |
| Array* default_values); |
| ClosureNode* CreateImplicitClosureNode(const Function& func, |
| intptr_t token_pos, |
| AstNode* receiver); |
| static void AddFormalParamsToFunction(const ParamList* params, |
| const Function& func); |
| void AddFormalParamsToScope(const ParamList* params, LocalScope* scope); |
| |
| SequenceNode* ParseConstructor(const Function& func, |
| Array* default_parameter_values); |
| SequenceNode* ParseFunc(const Function& func, |
| Array* default_parameter_values); |
| |
| void ParseNativeFunctionBlock(const ParamList* params, const Function& func); |
| |
| SequenceNode* ParseInstanceGetter(const Function& func); |
| SequenceNode* ParseInstanceSetter(const Function& func); |
| SequenceNode* ParseStaticFinalGetter(const Function& func); |
| SequenceNode* ParseStaticInitializer(); |
| SequenceNode* ParseMethodExtractor(const Function& func); |
| SequenceNode* ParseNoSuchMethodDispatcher(const Function& func, |
| Array* default_values); |
| SequenceNode* ParseInvokeFieldDispatcher(const Function& func, |
| Array* default_values); |
| |
| void BuildDispatcherScope(const Function& func, |
| const ArgumentsDescriptor& desc, |
| Array* default_values); |
| |
| void ChainNewBlock(LocalScope* outer_scope); |
| void OpenBlock(); |
| void OpenLoopBlock(); |
| void OpenFunctionBlock(const Function& func); |
| void OpenAsyncClosure(); |
| RawFunction* OpenAsyncFunction(intptr_t formal_param_pos); |
| RawFunction* OpenSyncGeneratorFunction(intptr_t func_pos); |
| SequenceNode* CloseSyncGenFunction(const Function& closure, |
| SequenceNode* closure_node); |
| void AddSyncGenClosureParameters(ParamList* params); |
| void AddAsyncGenClosureParameters(ParamList* params); |
| |
| // Support for async* functions. |
| RawFunction* OpenAsyncGeneratorFunction(intptr_t func_pos); |
| SequenceNode* CloseAsyncGeneratorFunction(const Function& closure, |
| SequenceNode* closure_node); |
| void OpenAsyncGeneratorClosure(); |
| SequenceNode* CloseAsyncGeneratorClosure(SequenceNode* body); |
| |
| void OpenAsyncTryBlock(); |
| SequenceNode* CloseBlock(); |
| SequenceNode* CloseAsyncFunction(const Function& closure, |
| SequenceNode* closure_node); |
| |
| SequenceNode* CloseAsyncClosure(SequenceNode* body); |
| SequenceNode* CloseAsyncTryBlock(SequenceNode* try_block); |
| SequenceNode* CloseAsyncGeneratorTryBlock(SequenceNode *body); |
| |
| void AddAsyncClosureParameters(ParamList* params); |
| void AddContinuationVariables(); |
| void AddAsyncClosureVariables(); |
| void AddAsyncGeneratorVariables(); |
| |
| LocalVariable* LookupPhaseParameter(); |
| LocalVariable* LookupReceiver(LocalScope* from_scope, bool test_only); |
| LocalVariable* LookupTypeArgumentsParameter(LocalScope* from_scope, |
| bool test_only); |
| void CaptureInstantiator(); |
| AstNode* LoadReceiver(intptr_t token_pos); |
| AstNode* LoadFieldIfUnresolved(AstNode* node); |
| AstNode* LoadClosure(PrimaryNode* primary); |
| AstNode* CallGetter(intptr_t token_pos, AstNode* object, const String& name); |
| |
| AstNode* ParseAssertStatement(); |
| AstNode* ParseJump(String* label_name); |
| AstNode* ParseIfStatement(String* label_name); |
| AstNode* ParseWhileStatement(String* label_name); |
| AstNode* ParseDoWhileStatement(String* label_name); |
| AstNode* ParseForStatement(String* label_name); |
| AstNode* ParseAwaitForStatement(String* label_name); |
| AstNode* ParseForInStatement(intptr_t forin_pos, SourceLabel* label); |
| RawClass* CheckCaseExpressions(const GrowableArray<LiteralNode*>& values); |
| CaseNode* ParseCaseClause(LocalVariable* switch_expr_value, |
| GrowableArray<LiteralNode*>* case_expr_values, |
| SourceLabel* case_label); |
| AstNode* ParseSwitchStatement(String* label_name); |
| |
| // try/catch/finally parsing. |
| void AddCatchParamsToScope(CatchParamDesc* exception_param, |
| CatchParamDesc* stack_trace_param, |
| LocalScope* scope); |
| void SetupExceptionVariables(LocalScope* try_scope, |
| bool is_async, |
| LocalVariable** context_var, |
| LocalVariable** exception_var, |
| LocalVariable** stack_trace_var, |
| LocalVariable** saved_exception_var, |
| LocalVariable** saved_stack_trace_var); |
| void SaveExceptionAndStacktrace(SequenceNode* statements, |
| LocalVariable* exception_var, |
| LocalVariable* stack_trace_var, |
| LocalVariable* saved_exception_var, |
| LocalVariable* saved_stack_trace_var); |
| // Parse all the catch clause of a try. |
| SequenceNode* ParseCatchClauses(intptr_t handler_pos, |
| bool is_async, |
| LocalVariable* exception_var, |
| LocalVariable* stack_trace_var, |
| LocalVariable* rethrow_exception_var, |
| LocalVariable* rethrow_stack_trace_var, |
| const GrowableObjectArray& handler_types, |
| bool* needs_stack_trace); |
| // Parse finally block and create an AST for it. |
| SequenceNode* ParseFinallyBlock(bool is_async, |
| LocalVariable* exception_var, |
| LocalVariable* stack_trace_var, |
| LocalVariable* rethrow_exception_var, |
| LocalVariable* rethrow_stack_trace_var); |
| // Push try block onto the stack of try blocks in scope. |
| void PushTry(Block* try_block); |
| // Pop the inner most try block from the stack. |
| TryStack* PopTry(); |
| // Collect try block scopes and indices if await or yield is in try block. |
| void CheckAsyncOpInTryBlock(LocalScope** try_scope, |
| int16_t* try_index, |
| LocalScope** outer_try_scope, |
| int16_t* outer_try_index) const; |
| // Add specified node to try block list so that it can be patched with |
| // inlined finally code if needed. |
| void AddNodeForFinallyInlining(AstNode* node); |
| // Add the inlined finally block to the specified node. |
| void AddFinallyBlockToNode(bool is_async, |
| AstNode* node, |
| InlinedFinallyNode* finally_node); |
| AstNode* ParseTryStatement(String* label_name); |
| RawAbstractType* ParseConstFinalVarOrType( |
| ClassFinalizer::FinalizationKind finalization); |
| AstNode* ParseVariableDeclaration(const AbstractType& type, |
| bool is_final, |
| bool is_const, |
| SequenceNode** await_preamble); |
| AstNode* ParseVariableDeclarationList(); |
| AstNode* ParseFunctionStatement(bool is_literal); |
| AstNode* ParseYieldStatement(); |
| AstNode* ParseStatement(); |
| SequenceNode* ParseNestedStatement(bool parsing_loop_body, |
| SourceLabel* label); |
| void ParseStatementSequence(); |
| bool IsIdentifier(); |
| bool IsSymbol(const String& symbol); |
| bool IsSimpleLiteral(const AbstractType& type, Instance* value); |
| bool IsFunctionTypeAliasName(); |
| bool IsMixinAppAlias(); |
| bool TryParseQualIdent(); |
| bool TryParseTypeParameters(); |
| bool TryParseOptionalType(); |
| bool TryParseReturnType(); |
| bool IsVariableDeclaration(); |
| bool IsFunctionDeclaration(); |
| bool IsFunctionLiteral(); |
| bool IsForInStatement(); |
| bool IsTopLevelAccessor(); |
| |
| AstNode* ParseBinaryExpr(int min_preced); |
| LiteralNode* ParseConstExpr(); |
| static const bool kRequireConst = true; |
| static const bool kAllowConst = false; |
| static const bool kConsumeCascades = true; |
| static const bool kNoCascades = false; |
| AstNode* ParseAwaitableExpr(bool require_compiletime_const, |
| bool consume_cascades, |
| SequenceNode** await_preamble); |
| AstNode* ParseExpr(bool require_compiletime_const, bool consume_cascades); |
| AstNode* ParseAwaitableExprList(); |
| AstNode* ParseConditionalExpr(); |
| AstNode* ParseUnaryExpr(); |
| AstNode* ParsePostfixExpr(); |
| AstNode* ParseSelectors(AstNode* primary, bool is_cascade); |
| AstNode* ParseCascades(AstNode* expr); |
| AstNode* ParsePrimary(); |
| AstNode* ParseStringLiteral(bool allow_interpolation); |
| String* ParseImportStringLiteral(); |
| AstNode* ParseCompoundLiteral(); |
| AstNode* ParseSymbolLiteral(); |
| AstNode* ParseListLiteral(intptr_t type_pos, |
| bool is_const, |
| const TypeArguments& type_arguments); |
| AstNode* ParseMapLiteral(intptr_t type_pos, |
| bool is_const, |
| const TypeArguments& type_arguments); |
| AstNode* ParseNewOperator(Token::Kind op_kind); |
| |
| // An implicit argument, if non-null, is prepended to the returned list. |
| ArgumentListNode* ParseActualParameters(ArgumentListNode* implicit_arguments, |
| bool require_const); |
| AstNode* ParseStaticCall(const Class& cls, |
| const String& method_name, |
| intptr_t ident_pos); |
| AstNode* ParseInstanceCall(AstNode* receiver, const String& method_name); |
| AstNode* ParseClosureCall(AstNode* closure); |
| AstNode* GenerateStaticFieldLookup(const Field& field, |
| intptr_t ident_pos); |
| AstNode* ParseStaticFieldAccess(const Class& cls, |
| const String& field_name, |
| intptr_t ident_pos, |
| bool consume_cascades); |
| |
| LocalVariable* LookupLocalScope(const String& ident); |
| void CheckInstanceFieldAccess(intptr_t field_pos, const String& field_name); |
| bool ParsingStaticMember() const; |
| const AbstractType* ReceiverType(const Class& cls); |
| bool IsInstantiatorRequired() const; |
| bool ResolveIdentInLocalScope(intptr_t ident_pos, |
| const String &ident, |
| AstNode** node); |
| static const bool kResolveLocally = true; |
| static const bool kResolveIncludingImports = false; |
| |
| // Resolve a primary identifier in the library or prefix scope and |
| // generate the corresponding AstNode. |
| AstNode* ResolveIdentInCurrentLibraryScope(intptr_t ident_pos, |
| const String& ident); |
| AstNode* ResolveIdentInPrefixScope(intptr_t ident_pos, |
| const LibraryPrefix& prefix, |
| const String& ident); |
| |
| // Find class with the given name in the library or prefix scope. |
| RawClass* ResolveClassInCurrentLibraryScope(const String& name); |
| RawClass* ResolveClassInPrefixScope(const LibraryPrefix& prefix, |
| const String& name); |
| |
| AstNode* ResolveIdent(intptr_t ident_pos, |
| const String& ident, |
| bool allow_closure_names); |
| RawString* ResolveImportVar(intptr_t ident_pos, const String& ident); |
| AstNode* OptimizeBinaryOpNode(intptr_t op_pos, |
| Token::Kind binary_op, |
| AstNode* lhs, |
| AstNode* rhs); |
| AstNode* ExpandAssignableOp(intptr_t op_pos, |
| Token::Kind assignment_op, |
| AstNode* lhs, |
| AstNode* rhs); |
| LetNode* PrepareCompoundAssignmentNodes(AstNode** expr); |
| LocalVariable* CreateTempConstVariable(intptr_t token_pos, const char* s); |
| |
| static SequenceNode* NodeAsSequenceNode(intptr_t sequence_pos, |
| AstNode* node, |
| LocalScope* scope); |
| |
| SequenceNode* MakeImplicitConstructor(const Function& func); |
| AstNode* MakeStaticCall(const String& cls_name, |
| const String& func_name, |
| ArgumentListNode* arguments); |
| String& Interpolate(const GrowableArray<AstNode*>& values); |
| AstNode* MakeAssertCall(intptr_t begin, intptr_t end); |
| AstNode* ThrowTypeError(intptr_t type_pos, const AbstractType& type); |
| AstNode* ThrowNoSuchMethodError(intptr_t call_pos, |
| const Class& cls, |
| const String& function_name, |
| ArgumentListNode* function_arguments, |
| InvocationMirror::Call call, |
| InvocationMirror::Type type, |
| const Function* func); |
| |
| void SetupSavedTryContext(LocalVariable* saved_try_context); |
| |
| void CheckOperatorArity(const MemberDesc& member); |
| |
| void EnsureExpressionTemp(); |
| bool IsLegalAssignableSyntax(AstNode* expr, intptr_t end_pos); |
| AstNode* CreateAssignmentNode(AstNode* original, |
| AstNode* rhs, |
| const String* left_ident, |
| intptr_t left_pos); |
| AstNode* InsertClosureCallNodes(AstNode* condition); |
| |
| ConstructorCallNode* CreateConstructorCallNode( |
| intptr_t token_pos, |
| const TypeArguments& type_arguments, |
| const Function& constructor, |
| ArgumentListNode* arguments); |
| |
| void AddEqualityNullCheck(); |
| |
| AstNode* BuildClosureCall(intptr_t token_pos, |
| AstNode* closure, |
| ArgumentListNode* arguments); |
| |
| RawInstance* TryCanonicalize(const Instance& instance, intptr_t token_pos); |
| |
| Thread* thread() const { return thread_; } |
| Isolate* isolate() const { return thread()->isolate(); } |
| Zone* zone() const { return thread()->zone(); } |
| |
| Thread* thread_; // Cached current thread. |
| |
| Script& script_; |
| TokenStream::Iterator tokens_iterator_; |
| Token::Kind token_kind_; // Cached token kind for current token. |
| Block* current_block_; |
| |
| // is_top_level_ is true if parsing the "top level" of a compilation unit, |
| // that is class definitions, function type aliases, global functions, |
| // global variables. |
| bool is_top_level_; |
| |
| // await_is_keyword_ is true if we are parsing an async or generator |
| // function. In this context the identifiers await, async and yield |
| // are treated as keywords. |
| bool await_is_keyword_; |
| |
| // The member currently being parsed during "top level" parsing. |
| MemberDesc* current_member_; |
| |
| // Parser mode to allow/disallow function literals. This is used in |
| // constructor initializer expressions to handle ambiguous grammar. |
| bool SetAllowFunctionLiterals(bool value); |
| bool allow_function_literals_; |
| |
| // The function currently being compiled. |
| ParsedFunction* parsed_function_; |
| |
| // The function currently being parsed. |
| Function& innermost_function_; |
| |
| // Current literal token. |
| LiteralToken& literal_token_; |
| |
| // The class currently being parsed, or the owner class of the |
| // function currently being parsed. It is used for primary identifier lookups. |
| Class& current_class_; |
| |
| // The current library (and thus class dictionary) used to resolve names. |
| // When parsing a function, this is the library in which the function |
| // is defined. This can be the library in which the current_class_ is |
| // defined, or the library of a mixin class where the function originates. |
| Library& library_; |
| |
| // Stack of try blocks in scope, this is used to generate inlined finally |
| // code at all points in the try block where an exit from the block is |
| // done using 'return', 'break' or 'continue' statements. |
| TryStack* try_stack_; |
| |
| // Each try in this function gets its own try index. |
| int16_t AllocateTryIndex(); |
| |
| int16_t last_used_try_index_; |
| |
| bool unregister_pending_function_; |
| |
| LocalScope* async_temp_scope_; |
| |
| // Indentation of parser trace. |
| intptr_t trace_indent_; |
| |
| DISALLOW_COPY_AND_ASSIGN(Parser); |
| }; |
| |
| } // namespace dart |
| |
| #endif // VM_PARSER_H_ |