whesse@google.com
7b9880570d
BUG= TEST=standalone/io/TestExtensionsTest Review URL: https://chromiumcodereview.appspot.com//10103031 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@6674 260f80e4-7a28-3924-810f-c04153c831b5
612 lines
18 KiB
C++
612 lines
18 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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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include "include/dart_api.h"
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#include "include/dart_debugger_api.h"
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#include "bin/builtin.h"
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#include "bin/dartutils.h"
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#include "bin/directory.h"
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#include "bin/eventhandler.h"
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#include "bin/extensions.h"
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#include "bin/file.h"
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#include "bin/platform.h"
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#include "bin/process.h"
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#include "platform/globals.h"
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// snapshot_buffer points to a snapshot if we link in a snapshot otherwise
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// it is initialized to NULL.
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extern const uint8_t* snapshot_buffer;
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// Global state that stores a pointer to the application script file.
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static const char* original_script_name = NULL;
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static const char* original_working_directory = NULL;
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static const char* original_script_url = NULL;
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// Global state that stores the import URL map specified on the
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// command line.
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static CommandLineOptions* import_map_options = NULL;
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// Global state that indicates whether pprof symbol information is
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// to be generated or not.
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static const char* generate_pprof_symbols_filename = NULL;
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// Global state that indicates whether there is a debug breakpoint.
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// This pointer points into an argv buffer and does not need to be
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// free'd.
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static const char* breakpoint_at = NULL;
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// Global flag that is used to indicate that we want to compile all the
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// dart functions and not run anything.
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static bool has_compile_all = false;
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static bool IsValidFlag(const char* name,
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const char* prefix,
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intptr_t prefix_length) {
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intptr_t name_length = strlen(name);
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return ((name_length > prefix_length) &&
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(strncmp(name, prefix, prefix_length) == 0));
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}
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static void ProcessBreakpointOption(const char* funcname) {
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ASSERT(funcname != NULL);
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breakpoint_at = funcname;
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}
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static void ProcessCompileAllOption(const char* compile_all) {
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ASSERT(compile_all != NULL);
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has_compile_all = true;
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}
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static void ProcessPprofOption(const char* filename) {
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ASSERT(filename != NULL);
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generate_pprof_symbols_filename = filename;
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}
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static void ProcessImportMapOption(const char* map) {
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ASSERT(map != NULL);
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import_map_options->AddArgument(map);
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}
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static struct {
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const char* option_name;
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void (*process)(const char* option);
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} main_options[] = {
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{ "--break_at=", ProcessBreakpointOption },
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{ "--compile_all", ProcessCompileAllOption },
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{ "--generate_pprof_symbols=", ProcessPprofOption },
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{ "--import_map=", ProcessImportMapOption },
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{ NULL, NULL }
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};
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static bool ProcessMainOptions(const char* option) {
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int i = 0;
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const char* name = main_options[0].option_name;
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while (name != NULL) {
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int length = strlen(name);
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if (strncmp(option, name, length) == 0) {
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main_options[i].process(option + length);
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return true;
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}
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i += 1;
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name = main_options[i].option_name;
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}
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return false;
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}
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// Parse out the command line arguments. Returns -1 if the arguments
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// are incorrect, 0 otherwise.
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static int ParseArguments(int argc,
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char** argv,
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CommandLineOptions* vm_options,
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char** script_name,
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CommandLineOptions* dart_options) {
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const char* kPrefix = "--";
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const intptr_t kPrefixLen = strlen(kPrefix);
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// Skip the binary name.
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int i = 1;
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// Parse out the vm options.
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while ((i < argc) && IsValidFlag(argv[i], kPrefix, kPrefixLen)) {
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if (ProcessMainOptions(argv[i])) {
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i += 1;
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} else {
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vm_options->AddArgument(argv[i]);
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i += 1;
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}
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}
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if (generate_pprof_symbols_filename != NULL) {
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Dart_InitPprofSupport();
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}
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// Get the script name.
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if (i < argc) {
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*script_name = argv[i];
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i += 1;
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} else {
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return -1;
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}
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// Parse out options to be passed to dart main.
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while (i < argc) {
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dart_options->AddArgument(argv[i]);
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i += 1;
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}
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return 0;
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}
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static Dart_Handle SetupRuntimeOptions(CommandLineOptions* options,
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const char* script_name) {
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int options_count = options->count();
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Dart_Handle dart_script = Dart_NewString(script_name);
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if (Dart_IsError(dart_script)) {
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return dart_script;
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}
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Dart_Handle dart_arguments = Dart_NewList(options_count);
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if (Dart_IsError(dart_arguments)) {
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return dart_arguments;
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}
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for (int i = 0; i < options_count; i++) {
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Dart_Handle argument_value = Dart_NewString(options->GetArgument(i));
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if (Dart_IsError(argument_value)) {
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return argument_value;
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}
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Dart_Handle result = Dart_ListSetAt(dart_arguments, i, argument_value);
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if (Dart_IsError(result)) {
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return result;
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}
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}
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Dart_Handle core_lib_url = Dart_NewString("dart:coreimpl");
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if (Dart_IsError(core_lib_url)) {
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return core_lib_url;
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}
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Dart_Handle core_lib = Dart_LookupLibrary(core_lib_url);
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if (Dart_IsError(core_lib)) {
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return core_lib;
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}
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Dart_Handle runtime_options_class_name = Dart_NewString("RuntimeOptions");
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if (Dart_IsError(runtime_options_class_name)) {
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return runtime_options_class_name;
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}
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Dart_Handle runtime_options_class = Dart_GetClass(
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core_lib, runtime_options_class_name);
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if (Dart_IsError(runtime_options_class)) {
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return runtime_options_class;
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}
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Dart_Handle script_name_name = Dart_NewString("_nativeScript");
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if (Dart_IsError(script_name_name)) {
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return script_name_name;
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}
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Dart_Handle set_script_name =
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Dart_SetField(runtime_options_class, script_name_name, dart_script);
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if (Dart_IsError(set_script_name)) {
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return set_script_name;
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}
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Dart_Handle native_name = Dart_NewString("_nativeArguments");
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if (Dart_IsError(native_name)) {
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return native_name;
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}
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return Dart_SetField(runtime_options_class, native_name, dart_arguments);
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}
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static void DumpPprofSymbolInfo() {
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if (generate_pprof_symbols_filename != NULL) {
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Dart_EnterScope();
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File* pprof_file =
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File::Open(generate_pprof_symbols_filename, File::kWriteTruncate);
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ASSERT(pprof_file != NULL);
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void* buffer;
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int buffer_size;
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Dart_GetPprofSymbolInfo(&buffer, &buffer_size);
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if (buffer_size > 0) {
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ASSERT(buffer != NULL);
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pprof_file->WriteFully(buffer, buffer_size);
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}
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delete pprof_file; // Closes the file.
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Dart_ExitScope();
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}
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}
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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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Dart_Handle import_map) {
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if (!Dart_IsLibrary(library)) {
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return Dart_Error("not a library");
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}
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if (!Dart_IsString8(url)) {
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return Dart_Error("url is not a string");
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}
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const char* url_string = NULL;
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Dart_Handle result = Dart_StringToCString(url, &url_string);
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if (Dart_IsError(result)) {
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return result;
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}
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bool is_dart_scheme_url = DartUtils::IsDartSchemeURL(url_string);
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bool is_dart_extension_url = DartUtils::IsDartExtensionSchemeURL(url_string);
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if (tag == kCanonicalizeUrl) {
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// If this is a Dart Scheme URL then it is not modified as it will be
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// handled by the VM internally.
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if (is_dart_scheme_url) {
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return url;
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}
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// Resolve the url within the context of the library's URL.
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Dart_Handle builtin_lib = Builtin::LoadLibrary(Builtin::kBuiltinLibrary);
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Dart_Handle library_url = Dart_LibraryUrl(library);
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if (Dart_IsError(library_url)) {
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return library_url;
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}
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Dart_Handle dart_args[2];
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dart_args[0] = library_url;
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dart_args[1] = url;
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return Dart_Invoke(
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builtin_lib, Dart_NewString("_resolveUri"), 2, dart_args);
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}
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if (is_dart_scheme_url) {
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ASSERT(tag == kImportTag);
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// Handle imports of other built-in libraries present in the SDK.
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if (DartUtils::IsDartIOLibURL(url_string)) {
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return Builtin::LoadLibrary(Builtin::kIOLibrary);
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} else if (DartUtils::IsDartJsonLibURL(url_string)) {
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return Builtin::LoadLibrary(Builtin::kJsonLibrary);
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} else if (DartUtils::IsDartUriLibURL(url_string)) {
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return Builtin::LoadLibrary(Builtin::kUriLibrary);
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} else if (DartUtils::IsDartUtfLibURL(url_string)) {
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return Builtin::LoadLibrary(Builtin::kUtfLibrary);
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} else {
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return Dart_Error("Do not know how to load '%s'", url_string);
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}
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} else {
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// Get the file path out of the url.
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Dart_Handle builtin_lib = Builtin::LoadLibrary(Builtin::kBuiltinLibrary);
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Dart_Handle dart_args[1];
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dart_args[0] = url;
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Dart_Handle file_path = Dart_Invoke(
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builtin_lib, Dart_NewString("_filePathFromUri"), 1, dart_args);
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if (Dart_IsError(file_path)) {
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return file_path;
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}
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Dart_StringToCString(file_path, &url_string);
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}
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if (is_dart_extension_url) {
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if (tag != kImportTag) {
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return Dart_Error("Dart extensions must use import: '%s'", url_string);
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}
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return Extensions::LoadExtension(url_string, library);
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}
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result = DartUtils::LoadSource(NULL,
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library,
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url,
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tag,
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url_string,
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import_map);
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if (!Dart_IsError(result) && (tag == kImportTag)) {
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Builtin::ImportLibrary(result, Builtin::kBuiltinLibrary);
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}
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return result;
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}
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static Dart_Handle LoadScript(Dart_Handle builtin_lib,
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CommandLineOptions* map) {
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Dart_Handle dart_args[3];
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dart_args[0] = Dart_NewString(original_working_directory);
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dart_args[1] = Dart_NewString(original_script_name);
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#if !defined(TARGET_OS_WINDOWS)
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dart_args[2] = Dart_False();
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#else // !defined(TARGET_OS_WINDOWS)
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dart_args[2] = Dart_True();
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#endif // !defined(TARGET_OS_WINDOWS)
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Dart_Handle script_url = Dart_Invoke(
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builtin_lib, Dart_NewString("_resolveScriptUri"), 3, dart_args);
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if (Dart_IsError(script_url)) {
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fprintf(stderr, "%s", Dart_GetError(script_url));
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return script_url;
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}
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if (original_script_url == NULL) {
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const char* script_url_cstr;
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Dart_StringToCString(script_url, &script_url_cstr);
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original_script_url = strdup(script_url_cstr);
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}
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dart_args[0] = script_url;
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Dart_Handle script_path = Dart_Invoke(
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builtin_lib, Dart_NewString("_filePathFromUri"), 1, dart_args);
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if (Dart_IsError(script_path)) {
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return script_path;
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}
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const char* script_path_cstr;
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Dart_StringToCString(script_path, &script_path_cstr);
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Dart_Handle source = DartUtils::ReadStringFromFile(script_path_cstr);
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if (Dart_IsError(source)) {
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return source;
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}
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intptr_t length = (map == NULL) ? 0 : map->count();
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Dart_Handle import_map = Dart_NewList(length * 2);
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for (intptr_t i = 0; i < length; i++) {
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ASSERT(map->GetArgument(i) != NULL);
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char* name = strdup(map->GetArgument(i));
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ASSERT(name != NULL);
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char* map_name = strchr(name, ',');
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intptr_t index = i * 2;
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if (map_name != NULL) {
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*map_name = '\0';
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map_name += 1;
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Dart_ListSetAt(import_map, index, Dart_NewString(name));
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Dart_ListSetAt(import_map, (index + 1), Dart_NewString(map_name));
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} else {
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Dart_ListSetAt(import_map, index, Dart_NewString(name));
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Dart_ListSetAt(import_map, (index + 1), Dart_NewString(""));
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}
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free(name);
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}
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return Dart_LoadScript(script_url, source, LibraryTagHandler, import_map);
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}
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static bool CreateIsolateAndSetup(const char* name_prefix,
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void* data, char** error) {
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Dart_Isolate isolate =
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Dart_CreateIsolate(name_prefix, snapshot_buffer, data, error);
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if (isolate == NULL) {
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return false;
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}
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Dart_EnterScope();
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if (snapshot_buffer != NULL) {
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// Setup the native resolver as the snapshot does not carry it.
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Builtin::SetNativeResolver(Builtin::kBuiltinLibrary);
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Builtin::SetNativeResolver(Builtin::kIOLibrary);
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}
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// Prepare builtin and its dependent libraries for use to resolve URIs.
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Dart_Handle uri_lib = Builtin::LoadLibrary(Builtin::kUriLibrary);
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if (Dart_IsError(uri_lib)) {
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*error = strdup(Dart_GetError(uri_lib));
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return false;
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}
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Dart_Handle builtin_lib = Builtin::LoadLibrary(Builtin::kBuiltinLibrary);
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if (Dart_IsError(builtin_lib)) {
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*error = strdup(Dart_GetError(builtin_lib));
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return false;
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}
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Dart_Handle library = Dart_LibraryImportLibrary(builtin_lib, uri_lib);
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if (Dart_IsError(library)) {
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*error = strdup(Dart_GetError(library));
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return false;
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}
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// Load the specified application script into the newly created isolate.
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library = LoadScript(builtin_lib, import_map_options);
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if (Dart_IsError(library)) {
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*error = strdup(Dart_GetError(library));
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Dart_ExitScope();
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Dart_ShutdownIsolate();
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return false;
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}
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if (!Dart_IsLibrary(library)) {
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char errbuf[256];
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snprintf(errbuf, sizeof(errbuf),
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"Expected a library when loading script: %s",
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original_script_name);
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*error = strdup(errbuf);
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Dart_ExitScope();
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Dart_ShutdownIsolate();
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return false;
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}
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// Implicitly import builtin into app.
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Builtin::ImportLibrary(library, Builtin::kBuiltinLibrary);
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Dart_ExitScope();
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return true;
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}
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static void PrintUsage() {
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fprintf(stderr,
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"dart [<vm-flags>] <dart-script-file> [<dart-options>]\n");
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}
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static Dart_Handle SetBreakpoint(const char* breakpoint_at,
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Dart_Handle library) {
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Dart_Handle result;
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if (strchr(breakpoint_at, ':')) {
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char* bpt_line = strdup(breakpoint_at);
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char* colon = strchr(bpt_line, ':');
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ASSERT(colon != NULL);
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*colon = '\0';
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Dart_Handle url = Dart_NewString(bpt_line);
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Dart_Handle line_number = Dart_NewInteger(atoi(colon + 1));
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free(bpt_line);
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Dart_Breakpoint bpt;
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result = Dart_SetBreakpointAtLine(url, line_number, &bpt);
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} else {
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char* bpt_function = strdup(breakpoint_at);
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Dart_Handle class_name;
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Dart_Handle function_name;
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char* dot = strchr(bpt_function, '.');
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if (dot == NULL) {
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class_name = Dart_NewString("");
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function_name = Dart_NewString(breakpoint_at);
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} else {
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*dot = '\0';
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class_name = Dart_NewString(bpt_function);
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function_name = Dart_NewString(dot + 1);
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}
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free(bpt_function);
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Dart_Breakpoint bpt;
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result = Dart_SetBreakpointAtEntry(
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library, class_name, function_name, &bpt);
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}
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return result;
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}
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char* BuildIsolateName(const char* script_name,
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const char* func_name) {
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// Skip past any slashes in the script name.
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const char* last_slash = strrchr(script_name, '/');
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if (last_slash != NULL) {
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script_name = last_slash + 1;
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}
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const char* kFormat = "%s/%s";
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intptr_t len = strlen(script_name) + strlen(func_name) + 2;
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char* buffer = new char[len];
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ASSERT(buffer != NULL);
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snprintf(buffer, len, kFormat, script_name, func_name);
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return buffer;
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}
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static const int kErrorExitCode = 255; // Indicates we encountered an error.
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static int ErrorExit(const char* format, ...) {
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va_list arguments;
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va_start(arguments, format);
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vfprintf(stderr, format, arguments);
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va_end(arguments);
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Dart_ExitScope();
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Dart_ShutdownIsolate();
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free(const_cast<char*>(original_script_name));
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|
free(const_cast<char*>(original_working_directory));
|
|
free(const_cast<char*>(original_script_url));
|
|
|
|
return kErrorExitCode;
|
|
}
|
|
|
|
|
|
int main(int argc, char** argv) {
|
|
char* script_name;
|
|
CommandLineOptions vm_options(argc);
|
|
CommandLineOptions dart_options(argc);
|
|
CommandLineOptions import_map(argc);
|
|
import_map_options = &import_map;
|
|
|
|
// Perform platform specific initialization.
|
|
if (!Platform::Initialize()) {
|
|
fprintf(stderr, "Initialization failed\n");
|
|
}
|
|
|
|
// Parse command line arguments.
|
|
if (ParseArguments(argc,
|
|
argv,
|
|
&vm_options,
|
|
&script_name,
|
|
&dart_options) < 0) {
|
|
PrintUsage();
|
|
return kErrorExitCode;
|
|
}
|
|
|
|
Dart_SetVMFlags(vm_options.count(), vm_options.arguments());
|
|
|
|
// Initialize the Dart VM.
|
|
Dart_Initialize(CreateIsolateAndSetup, NULL);
|
|
|
|
original_script_name = strdup(script_name);
|
|
original_working_directory = Directory::Current();
|
|
|
|
// Call CreateIsolateAndSetup which creates an isolate and loads up
|
|
// the specified application script.
|
|
char* error = NULL;
|
|
char* isolate_name = BuildIsolateName(original_script_name, "main");
|
|
if (!CreateIsolateAndSetup(isolate_name, NULL, &error)) {
|
|
fprintf(stderr, "%s\n", error);
|
|
free(const_cast<char*>(original_script_name));
|
|
free(const_cast<char*>(original_working_directory));
|
|
free(error);
|
|
delete [] isolate_name;
|
|
return 255; // Indicates we encountered an error.
|
|
}
|
|
delete [] isolate_name;
|
|
|
|
Dart_Isolate isolate = Dart_CurrentIsolate();
|
|
ASSERT(isolate != NULL);
|
|
Dart_Handle result;
|
|
|
|
Dart_EnterScope();
|
|
|
|
if (has_compile_all) {
|
|
result = Dart_CompileAll();
|
|
if (Dart_IsError(result)) {
|
|
return ErrorExit("%s\n", Dart_GetError(result));
|
|
}
|
|
}
|
|
|
|
// Create a dart options object that can be accessed from dart code.
|
|
Dart_Handle options_result =
|
|
SetupRuntimeOptions(&dart_options, original_script_name);
|
|
if (Dart_IsError(options_result)) {
|
|
return ErrorExit("%s\n", Dart_GetError(options_result));
|
|
}
|
|
// Lookup the library of the main script.
|
|
Dart_Handle script_url = Dart_NewString(original_script_url);
|
|
Dart_Handle library = Dart_LookupLibrary(script_url);
|
|
if (Dart_IsError(library)) {
|
|
return ErrorExit("%s\n", Dart_GetError(library));
|
|
}
|
|
// Set debug breakpoint if specified on the command line.
|
|
if (breakpoint_at != NULL) {
|
|
result = SetBreakpoint(breakpoint_at, library);
|
|
if (Dart_IsError(result)) {
|
|
return ErrorExit("Error setting breakpoint at '%s': %s\n",
|
|
breakpoint_at,
|
|
Dart_GetError(result));
|
|
}
|
|
}
|
|
// Lookup and invoke the top level main function.
|
|
result = Dart_InvokeStatic(library,
|
|
Dart_NewString(""),
|
|
Dart_NewString("main"),
|
|
0, NULL);
|
|
if (Dart_IsError(result)) {
|
|
return ErrorExit("%s\n", Dart_GetError(result));
|
|
}
|
|
// Keep handling messages until the last active receive port is closed.
|
|
result = Dart_RunLoop();
|
|
if (Dart_IsError(result)) {
|
|
return ErrorExit("%s\n", Dart_GetError(result));
|
|
}
|
|
|
|
Dart_ExitScope();
|
|
// Dump symbol information for the profiler.
|
|
DumpPprofSymbolInfo();
|
|
// Shutdown the isolate.
|
|
Dart_ShutdownIsolate();
|
|
// Terminate process exit-code handler.
|
|
Process::TerminateExitCodeHandler();
|
|
|
|
free(const_cast<char*>(original_script_name));
|
|
free(const_cast<char*>(original_working_directory));
|
|
free(const_cast<char*>(original_script_url));
|
|
|
|
return 0;
|
|
}
|