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v8-message.h
// Copyright 2021 the V8 project authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #ifndef INCLUDE_V8_MESSAGE_H_ #define INCLUDE_V8_MESSAGE_H_ #include <stdio.h> #include <iosfwd> #include "v8-callbacks.h" // NOLINT(build/include_directory) #include "v8-local-handle.h" // NOLINT(build/include_directory) #include "v8-maybe.h" // NOLINT(build/include_directory) #include "v8-primitive.h" // NOLINT(build/include_directory) #include "v8config.h" // NOLINT(build/include_directory) namespace v8 { class Integer; class PrimitiveArray; class StackTrace; class String; class Value; /** * The optional attributes of ScriptOrigin. */ class ScriptOriginOptions { public: V8_INLINE ScriptOriginOptions(bool is_shared_cross_origin = false, bool is_opaque = false, bool is_wasm = false, bool is_module = false) : flags_((is_shared_cross_origin ? kIsSharedCrossOrigin : 0) | (is_wasm ? kIsWasm : 0) | (is_opaque ? kIsOpaque : 0) | (is_module ? kIsModule : 0)) {} V8_INLINE ScriptOriginOptions(int flags) : flags_(flags & (kIsSharedCrossOrigin | kIsOpaque | kIsWasm | kIsModule)) {} bool IsSharedCrossOrigin() const { return (flags_ & kIsSharedCrossOrigin) != 0; } bool IsOpaque() const { return (flags_ & kIsOpaque) != 0; } bool IsWasm() const { return (flags_ & kIsWasm) != 0; } bool IsModule() const { return (flags_ & kIsModule) != 0; } int Flags() const { return flags_; } private: enum { kIsSharedCrossOrigin = 1, kIsOpaque = 1 << 1, kIsWasm = 1 << 2, kIsModule = 1 << 3 }; const int flags_; }; /** * The origin, within a file, of a script. */ class V8_EXPORT ScriptOrigin { public: V8_INLINE ScriptOrigin(Local<Value> resource_name, int resource_line_offset = 0, int resource_column_offset = 0, bool resource_is_shared_cross_origin = false, int script_id = -1, Local<Value> source_map_url = Local<Value>(), bool resource_is_opaque = false, bool is_wasm = false, bool is_module = false, Local<Data> host_defined_options = Local<Data>()) : resource_name_(resource_name), resource_line_offset_(resource_line_offset), resource_column_offset_(resource_column_offset), options_(resource_is_shared_cross_origin, resource_is_opaque, is_wasm, is_module), script_id_(script_id), source_map_url_(source_map_url), host_defined_options_(host_defined_options) { VerifyHostDefinedOptions(); } V8_INLINE Local<Value> ResourceName() const; V8_INLINE int LineOffset() const; V8_INLINE int ColumnOffset() const; V8_INLINE int ScriptId() const; V8_INLINE Local<Value> SourceMapUrl() const; V8_INLINE Local<Data> GetHostDefinedOptions() const; V8_INLINE ScriptOriginOptions Options() const { return options_; } private: void VerifyHostDefinedOptions() const; Local<Value> resource_name_; int resource_line_offset_; int resource_column_offset_; ScriptOriginOptions options_; int script_id_; Local<Value> source_map_url_; Local<Data> host_defined_options_; }; /** * An error message. */ class V8_EXPORT Message { public: Local<String> Get() const; /** * Return the isolate to which the Message belongs. */ Isolate* GetIsolate() const; V8_WARN_UNUSED_RESULT MaybeLocal<String> GetSource( Local<Context> context) const; V8_WARN_UNUSED_RESULT MaybeLocal<String> GetSourceLine( Local<Context> context) const; /** * Returns the origin for the script from where the function causing the * error originates. */ ScriptOrigin GetScriptOrigin() const; /** * Returns the resource name for the script from where the function causing * the error originates. */ Local<Value> GetScriptResourceName() const; /** * Exception stack trace. By default stack traces are not captured for * uncaught exceptions. SetCaptureStackTraceForUncaughtExceptions allows * to change this option. */ Local<StackTrace> GetStackTrace() const; /** * Returns the number, 1-based, of the line where the error occurred. */ V8_WARN_UNUSED_RESULT Maybe<int> GetLineNumber(Local<Context> context) const; /** * Returns the index within the script of the first character where * the error occurred. */ int GetStartPosition() const; /** * Returns the index within the script of the last character where * the error occurred. */ int GetEndPosition() const; /** * Returns the Wasm function index where the error occurred. Returns -1 if * message is not from a Wasm script. */ int GetWasmFunctionIndex() const; /** * Returns the error level of the message. */ int ErrorLevel() const; /** * Returns the index within the line of the first character where * the error occurred. */ int GetStartColumn() const; V8_WARN_UNUSED_RESULT Maybe<int> GetStartColumn(Local<Context> context) const; /** * Returns the index within the line of the last character where * the error occurred. */ int GetEndColumn() const; V8_WARN_UNUSED_RESULT Maybe<int> GetEndColumn(Local<Context> context) const; /** * Passes on the value set by the embedder when it fed the script from which * this Message was generated to V8. */ bool IsSharedCrossOrigin() const; bool IsOpaque() const; /** * If provided, the callback can be used to selectively include * or redact frames based on their script names. (true to include a frame) */ static void PrintCurrentStackTrace( Isolate* isolate, std::ostream& out, PrintCurrentStackTraceFilterCallback should_include_frame_callback = nullptr); static const int kNoLineNumberInfo = 0; static const int kNoColumnInfo = 0; static const int kNoScriptIdInfo = 0; static const int kNoWasmFunctionIndexInfo = -1; }; Local<Value> ScriptOrigin::ResourceName() const { return resource_name_; } Local<Data> ScriptOrigin::GetHostDefinedOptions() const { return host_defined_options_; } int ScriptOrigin::LineOffset() const { return resource_line_offset_; } int ScriptOrigin::ColumnOffset() const { return resource_column_offset_; } int ScriptOrigin::ScriptId() const { return script_id_; } Local<Value> ScriptOrigin::SourceMapUrl() const { return source_map_url_; } } // namespace v8 #endif // INCLUDE_V8_MESSAGE_H_