asiva@google.com
067b8ba92c
Review URL: https://codereview.chromium.org//12226068 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@18367 260f80e4-7a28-3924-810f-c04153c831b5
424 lines
14 KiB
C++
424 lines
14 KiB
C++
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#ifndef BIN_DARTUTILS_H_
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#define BIN_DARTUTILS_H_
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#include "bin/builtin.h"
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#include "bin/utils.h"
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#include "include/dart_api.h"
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#include "platform/globals.h"
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/* Handles error handles returned from Dart API functions. If a value
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* is an error, uses Dart_PropagateError to throw it to the enclosing
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* Dart activation. Otherwise, returns the original handle.
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*
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* This function can be used to wrap most API functions, but API
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* functions can also be nested without this error check, since all
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* API functions return any error handles passed in as arguments, unchanged.
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*/
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static inline Dart_Handle ThrowIfError(Dart_Handle handle) {
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if (Dart_IsError(handle)) Dart_PropagateError(handle);
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return handle;
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}
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class CommandLineOptions {
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public:
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explicit CommandLineOptions(int max_count)
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: count_(0), max_count_(max_count), arguments_(NULL) {
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static const int kWordSize = sizeof(intptr_t);
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arguments_ = reinterpret_cast<const char **>(malloc(max_count * kWordSize));
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if (arguments_ == NULL) {
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max_count_ = 0;
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}
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}
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~CommandLineOptions() {
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free(arguments_);
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count_ = 0;
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max_count_ = 0;
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arguments_ = NULL;
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}
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int count() const { return count_; }
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const char** arguments() const { return arguments_; }
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const char* GetArgument(int index) const {
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return (index >= 0 && index < count_) ? arguments_[index] : NULL;
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}
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void AddArgument(const char* argument) {
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if (count_ < max_count_) {
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arguments_[count_] = argument;
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count_ += 1;
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} else {
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abort(); // We should never get into this situation.
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}
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}
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void operator delete(void* pointer) { abort(); }
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private:
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void* operator new(size_t size);
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int count_;
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int max_count_;
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const char** arguments_;
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DISALLOW_COPY_AND_ASSIGN(CommandLineOptions);
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};
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class DartUtils {
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public:
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// TODO(turnidge): Clean up the implementations of these so that
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// they allow for proper error propagation.
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// Assumes that the value object is known to be an integer object
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// that fits in a signed 64-bit integer.
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static int64_t GetIntegerValue(Dart_Handle value_obj);
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// Assumes that the value object is known to be an intptr_t. This should
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// only be known when the value has been put into Dart as a pointer encoded
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// in a 64-bit integer. This is the case for file and directory operations.
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static intptr_t GetIntptrValue(Dart_Handle value_obj);
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// Checks that the value object is an integer object that fits in a
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// signed 64-bit integer. If it is, the value is returned in the
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// value out parameter and true is returned. Otherwise, false is
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// returned.
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static bool GetInt64Value(Dart_Handle value_obj, int64_t* value);
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static const char* GetStringValue(Dart_Handle str_obj);
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static bool GetBooleanValue(Dart_Handle bool_obj);
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static void SetIntegerField(Dart_Handle handle,
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const char* name,
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intptr_t val);
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static intptr_t GetIntegerField(Dart_Handle handle,
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const char* name);
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static void SetStringField(Dart_Handle handle,
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const char* name,
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const char* val);
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static bool IsDartSchemeURL(const char* url_name);
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static bool IsDartExtensionSchemeURL(const char* url_name);
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static bool IsDartCryptoLibURL(const char* url_name);
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static bool IsDartIOLibURL(const char* url_name);
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static bool IsDartBuiltinLibURL(const char* url_name);
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static bool IsDartJsonLibURL(const char* url_name);
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static bool IsDartUriLibURL(const char* url_name);
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static bool IsDartUtfLibURL(const char* url_name);
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static Dart_Handle CanonicalizeURL(CommandLineOptions* url_mapping,
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Dart_Handle library,
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const char* url_str);
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static Dart_Handle ReadStringFromFile(const char* filename);
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static Dart_Handle LibraryTagHandler(Dart_LibraryTag tag,
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Dart_Handle library,
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Dart_Handle url);
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static Dart_Handle LoadScript(const char* script_uri,
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Dart_Handle builtin_lib);
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static Dart_Handle LoadSource(CommandLineOptions* url_mapping,
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Dart_Handle library,
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Dart_Handle url,
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Dart_LibraryTag tag,
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const char* filename);
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static Dart_Handle PrepareForScriptLoading(const char* package_root,
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Dart_Handle builtin_lib);
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static bool PostNull(Dart_Port port_id);
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static bool PostInt32(Dart_Port port_id, int32_t value);
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static Dart_Handle GetDartClass(const char* library_url,
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const char* class_name);
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// Create a new Dart OSError object with the current OS error.
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static Dart_Handle NewDartOSError();
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// Create a new Dart OSError object with the provided OS error.
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static Dart_Handle NewDartOSError(OSError* os_error);
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static Dart_Handle NewDartSocketIOException(const char* message,
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Dart_Handle os_error);
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static Dart_Handle NewDartExceptionWithMessage(const char* library_url,
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const char* exception_name,
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const char* message);
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static Dart_Handle NewDartArgumentError(const char* message);
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// Create a new Dart String object from a C String.
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static Dart_Handle NewString(const char* str) {
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ASSERT(str != NULL);
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return Dart_NewStringFromUTF8(reinterpret_cast<const uint8_t*>(str),
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strlen(str));
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}
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static void SetOriginalWorkingDirectory();
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static const char* MapLibraryUrl(CommandLineOptions* url_mapping,
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const char* url_string);
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static Dart_Handle ResolveScriptUri(Dart_Handle script_uri,
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Dart_Handle builtin_lib);
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static Dart_Handle FilePathFromUri(Dart_Handle script_uri,
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Dart_Handle builtin_lib);
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static Dart_Handle ResolveUri(Dart_Handle library_url,
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Dart_Handle url,
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Dart_Handle builtin_lib);
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// Global state that stores the original working directory..
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static const char* original_working_directory;
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static const char* kDartScheme;
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static const char* kDartExtensionScheme;
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static const char* kASyncLibURL;
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static const char* kBuiltinLibURL;
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static const char* kCoreLibURL;
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static const char* kCryptoLibURL;
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static const char* kIOLibURL;
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static const char* kIOLibPatchURL;
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static const char* kJsonLibURL;
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static const char* kUriLibURL;
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static const char* kUtfLibURL;
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static const char* kIsolateLibURL;
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static const char* kScalarlistLibURL;
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static const char* kWebLibURL;
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static const char* kIdFieldName;
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private:
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static const char* GetCanonicalPath(const char* reference_dir,
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const char* filename);
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DISALLOW_ALLOCATION();
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DISALLOW_IMPLICIT_CONSTRUCTORS(DartUtils);
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};
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class CObject {
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public:
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explicit CObject(Dart_CObject *cobject) : cobject_(cobject) {}
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Dart_CObject::Type type() { return cobject_->type; }
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bool IsNull() { return type() == Dart_CObject::kNull; }
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bool IsBool() { return type() == Dart_CObject::kBool; }
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bool IsInt32() { return type() == Dart_CObject::kInt32; }
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bool IsInt64() { return type() == Dart_CObject::kInt64; }
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bool IsInt32OrInt64() { return IsInt32() || IsInt64(); }
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bool IsIntptr() { return IsInt32OrInt64(); }
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bool IsBigint() { return type() == Dart_CObject::kBigint; }
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bool IsDouble() { return type() == Dart_CObject::kDouble; }
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bool IsString() { return type() == Dart_CObject::kString; }
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bool IsArray() { return type() == Dart_CObject::kArray; }
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bool IsUint8Array() { return type() == Dart_CObject::kUint8Array; }
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bool IsTrue() {
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return type() == Dart_CObject::kBool && cobject_->value.as_bool;
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}
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bool IsFalse() {
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return type() == Dart_CObject::kBool && !cobject_->value.as_bool;
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}
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void* operator new(size_t size) {
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return Dart_ScopeAllocate(size);
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}
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static CObject* Null();
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static CObject* True();
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static CObject* False();
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static CObject* Bool(bool value);
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static Dart_CObject* NewInt32(int32_t value);
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static Dart_CObject* NewInt64(int64_t value);
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static Dart_CObject* NewIntptr(intptr_t value);
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// TODO(sgjesse): Add support for kBigint.
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static Dart_CObject* NewDouble(double value);
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static Dart_CObject* NewString(int length);
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static Dart_CObject* NewString(const char* str);
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static Dart_CObject* NewArray(int length);
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static Dart_CObject* NewUint8Array(int length);
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static Dart_CObject* NewExternalUint8Array(
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int64_t length, uint8_t* data, void* peer,
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Dart_WeakPersistentHandleFinalizer callback);
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static Dart_CObject* NewIOBuffer(int64_t length);
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static void FreeIOBufferData(Dart_CObject* object);
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Dart_CObject* AsApiCObject() { return cobject_; }
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// Create a new CObject array with an illegal arguments error.
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static CObject* IllegalArgumentError();
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// Create a new CObject array with a file closed error.
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static CObject* FileClosedError();
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// Create a new CObject array with the current OS error.
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static CObject* NewOSError();
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// Create a new CObject array with the specified OS error.
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static CObject* NewOSError(OSError* os_error);
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protected:
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CObject() : cobject_(NULL) {}
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Dart_CObject* cobject_;
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private:
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static Dart_CObject* New(Dart_CObject::Type type, int additional_bytes = 0);
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static Dart_CObject api_null_;
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static Dart_CObject api_true_;
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static Dart_CObject api_false_;
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static CObject null_;
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static CObject true_;
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static CObject false_;
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private:
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DISALLOW_COPY_AND_ASSIGN(CObject);
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};
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#define DECLARE_COBJECT_CONSTRUCTORS(t) \
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explicit CObject##t(Dart_CObject *cobject) : CObject(cobject) { \
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ASSERT(type() == Dart_CObject::k##t); \
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cobject_ = cobject; \
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} \
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explicit CObject##t(CObject* cobject) : CObject() { \
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ASSERT(cobject != NULL); \
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ASSERT(cobject->type() == Dart_CObject::k##t); \
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cobject_ = cobject->AsApiCObject(); \
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}
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class CObjectBool : public CObject {
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public:
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DECLARE_COBJECT_CONSTRUCTORS(Bool)
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bool Value() const { return cobject_->value.as_bool; }
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private:
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DISALLOW_COPY_AND_ASSIGN(CObjectBool);
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};
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class CObjectInt32 : public CObject {
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public:
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DECLARE_COBJECT_CONSTRUCTORS(Int32)
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int32_t Value() const { return cobject_->value.as_int32; }
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private:
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DISALLOW_COPY_AND_ASSIGN(CObjectInt32);
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};
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class CObjectInt64 : public CObject {
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public:
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DECLARE_COBJECT_CONSTRUCTORS(Int64)
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int64_t Value() const { return cobject_->value.as_int64; }
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private:
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DISALLOW_COPY_AND_ASSIGN(CObjectInt64);
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};
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class CObjectIntptr : public CObject {
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public:
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explicit CObjectIntptr(Dart_CObject *cobject) : CObject(cobject) {
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ASSERT(type() == Dart_CObject::kInt32 || type() == Dart_CObject::kInt64);
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cobject_ = cobject;
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}
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explicit CObjectIntptr(CObject* cobject) : CObject() {
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ASSERT(cobject != NULL);
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ASSERT(cobject->type() == Dart_CObject::kInt64 ||
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cobject->type() == Dart_CObject::kInt32);
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cobject_ = cobject->AsApiCObject();
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}
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intptr_t Value() {
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intptr_t result;
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if (type() == Dart_CObject::kInt32) {
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result = cobject_->value.as_int32;
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} else {
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ASSERT(sizeof(result) == 8);
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result = static_cast<intptr_t>(cobject_->value.as_int64);
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}
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return result;
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}
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private:
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DISALLOW_COPY_AND_ASSIGN(CObjectIntptr);
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};
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class CObjectBigint : public CObject {
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public:
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DECLARE_COBJECT_CONSTRUCTORS(Bigint)
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char* Value() const { return cobject_->value.as_bigint; }
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private:
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DISALLOW_COPY_AND_ASSIGN(CObjectBigint);
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};
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class CObjectDouble : public CObject {
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public:
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DECLARE_COBJECT_CONSTRUCTORS(Double)
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double Value() const { return cobject_->value.as_double; }
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private:
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DISALLOW_COPY_AND_ASSIGN(CObjectDouble);
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};
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class CObjectString : public CObject {
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public:
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DECLARE_COBJECT_CONSTRUCTORS(String)
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int Length() const { return strlen(cobject_->value.as_string); }
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char* CString() const { return cobject_->value.as_string; }
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private:
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DISALLOW_COPY_AND_ASSIGN(CObjectString);
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};
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class CObjectArray : public CObject {
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public:
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DECLARE_COBJECT_CONSTRUCTORS(Array)
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int Length() const { return cobject_->value.as_array.length; }
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CObject* operator[](int index) const {
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return new CObject(cobject_->value.as_array.values[index]);
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}
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void SetAt(int index, CObject* value) {
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cobject_->value.as_array.values[index] = value->AsApiCObject();
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}
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private:
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DISALLOW_COPY_AND_ASSIGN(CObjectArray);
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};
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class CObjectUint8Array : public CObject {
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public:
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DECLARE_COBJECT_CONSTRUCTORS(Uint8Array)
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int Length() const { return cobject_->value.as_byte_array.length; }
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uint8_t* Buffer() const { return cobject_->value.as_byte_array.values; }
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private:
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DISALLOW_COPY_AND_ASSIGN(CObjectUint8Array);
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};
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class CObjectExternalUint8Array : public CObject {
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public:
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DECLARE_COBJECT_CONSTRUCTORS(ExternalUint8Array)
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int Length() const { return cobject_->value.as_external_byte_array.length; }
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void SetLength(uint64_t length) {
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cobject_->value.as_external_byte_array.length = length;
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}
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uint8_t* Data() const { return cobject_->value.as_external_byte_array.data; }
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void* Peer() const { return cobject_->value.as_external_byte_array.peer; }
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Dart_WeakPersistentHandleFinalizer Callback() const {
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return cobject_->value.as_external_byte_array.callback;
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}
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private:
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DISALLOW_COPY_AND_ASSIGN(CObjectExternalUint8Array);
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};
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#endif // BIN_DARTUTILS_H_
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