Move V8 to external/v8
Change-Id: If68025d67453785a651c5dfb34fad298c16676a4
diff --git a/src/d8.js b/src/d8.js
new file mode 100644
index 0000000..be4a051
--- /dev/null
+++ b/src/d8.js
@@ -0,0 +1,1625 @@
+// Copyright 2008 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following
+// disclaimer in the documentation and/or other materials provided
+// with the distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived
+// from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+String.prototype.startsWith = function (str) {
+ if (str.length > this.length)
+ return false;
+ return this.substr(0, str.length) == str;
+}
+
+function log10(num) {
+ return Math.log(num)/Math.log(10);
+}
+
+function ToInspectableObject(obj) {
+ if (!obj && typeof obj === 'object') {
+ return void 0;
+ } else {
+ return Object(obj);
+ }
+}
+
+function GetCompletions(global, last, full) {
+ var full_tokens = full.split();
+ full = full_tokens.pop();
+ var parts = full.split('.');
+ parts.pop();
+ var current = global;
+ for (var i = 0; i < parts.length; i++) {
+ var part = parts[i];
+ var next = current[part];
+ if (!next)
+ return [];
+ current = next;
+ }
+ var result = [];
+ current = ToInspectableObject(current);
+ while (typeof current !== 'undefined') {
+ var mirror = new $debug.ObjectMirror(current);
+ var properties = mirror.properties();
+ for (var i = 0; i < properties.length; i++) {
+ var name = properties[i].name();
+ if (typeof name === 'string' && name.startsWith(last))
+ result.push(name);
+ }
+ current = ToInspectableObject(current.__proto__);
+ }
+ return result;
+}
+
+
+// Global object holding debugger related constants and state.
+const Debug = {};
+
+
+// Debug events which can occour in the V8 JavaScript engine. These originate
+// from the API include file v8-debug.h.
+Debug.DebugEvent = { Break: 1,
+ Exception: 2,
+ NewFunction: 3,
+ BeforeCompile: 4,
+ AfterCompile: 5 };
+
+
+// The different types of scripts matching enum ScriptType in objects.h.
+Debug.ScriptType = { Native: 0,
+ Extension: 1,
+ Normal: 2 };
+
+
+// The different types of script compilations matching enum
+// Script::CompilationType in objects.h.
+Debug.ScriptCompilationType = { Host: 0,
+ Eval: 1,
+ JSON: 2 };
+
+
+// The different types of scopes matching constants runtime.cc.
+Debug.ScopeType = { Global: 0,
+ Local: 1,
+ With: 2,
+ Closure: 3,
+ Catch: 4 };
+
+
+// Current debug state.
+const kNoFrame = -1;
+Debug.State = {
+ currentFrame: kNoFrame,
+ currentSourceLine: -1
+}
+var trace_compile = false; // Tracing all compile events?
+
+
+// Process a debugger JSON message into a display text and a running status.
+// This function returns an object with properties "text" and "running" holding
+// this information.
+function DebugMessageDetails(message) {
+ // Convert the JSON string to an object.
+ var response = new ProtocolPackage(message);
+
+ if (response.type() == 'event') {
+ return DebugEventDetails(response);
+ } else {
+ return DebugResponseDetails(response);
+ }
+}
+
+function DebugEventDetails(response) {
+ details = {text:'', running:false}
+
+ // Get the running state.
+ details.running = response.running();
+
+ var body = response.body();
+ var result = '';
+ switch (response.event()) {
+ case 'break':
+ if (body.breakpoints) {
+ result += 'breakpoint';
+ if (body.breakpoints.length > 1) {
+ result += 's';
+ }
+ result += ' #';
+ for (var i = 0; i < body.breakpoints.length; i++) {
+ if (i > 0) {
+ result += ', #';
+ }
+ result += body.breakpoints[i];
+ }
+ } else {
+ result += 'break';
+ }
+ result += ' in ';
+ result += body.invocationText;
+ result += ', ';
+ result += SourceInfo(body);
+ result += '\n';
+ result += SourceUnderline(body.sourceLineText, body.sourceColumn);
+ Debug.State.currentSourceLine = body.sourceLine;
+ Debug.State.currentFrame = 0;
+ details.text = result;
+ break;
+
+ case 'exception':
+ if (body.uncaught) {
+ result += 'Uncaught: ';
+ } else {
+ result += 'Exception: ';
+ }
+ result += '"';
+ result += body.exception.text;
+ result += '"';
+ if (body.sourceLine >= 0) {
+ result += ', ';
+ result += SourceInfo(body);
+ result += '\n';
+ result += SourceUnderline(body.sourceLineText, body.sourceColumn);
+ Debug.State.currentSourceLine = body.sourceLine;
+ Debug.State.currentFrame = 0;
+ } else {
+ result += ' (empty stack)';
+ Debug.State.currentSourceLine = -1;
+ Debug.State.currentFrame = kNoFrame;
+ }
+ details.text = result;
+ break;
+
+ case 'afterCompile':
+ if (trace_compile) {
+ result = 'Source ' + body.script.name + ' compiled:\n'
+ var source = body.script.source;
+ if (!(source[source.length - 1] == '\n')) {
+ result += source;
+ } else {
+ result += source.substring(0, source.length - 1);
+ }
+ }
+ details.text = result;
+ break;
+
+ default:
+ details.text = 'Unknown debug event ' + response.event();
+ }
+
+ return details;
+};
+
+
+function SourceInfo(body) {
+ var result = '';
+
+ if (body.script) {
+ if (body.script.name) {
+ result += body.script.name;
+ } else {
+ result += '[unnamed]';
+ }
+ }
+ result += ' line ';
+ result += body.sourceLine + 1;
+ result += ' column ';
+ result += body.sourceColumn + 1;
+
+ return result;
+}
+
+
+function SourceUnderline(source_text, position) {
+ if (!source_text) {
+ return;
+ }
+
+ // Create an underline with a caret pointing to the source position. If the
+ // source contains a tab character the underline will have a tab character in
+ // the same place otherwise the underline will have a space character.
+ var underline = '';
+ for (var i = 0; i < position; i++) {
+ if (source_text[i] == '\t') {
+ underline += '\t';
+ } else {
+ underline += ' ';
+ }
+ }
+ underline += '^';
+
+ // Return the source line text with the underline beneath.
+ return source_text + '\n' + underline;
+};
+
+
+// Converts a text command to a JSON request.
+function DebugCommandToJSONRequest(cmd_line) {
+ return new DebugRequest(cmd_line).JSONRequest();
+};
+
+
+function DebugRequest(cmd_line) {
+ // If the very first character is a { assume that a JSON request have been
+ // entered as a command. Converting that to a JSON request is trivial.
+ if (cmd_line && cmd_line.length > 0 && cmd_line.charAt(0) == '{') {
+ this.request_ = cmd_line;
+ return;
+ }
+
+ // Trim string for leading and trailing whitespace.
+ cmd_line = cmd_line.replace(/^\s+|\s+$/g, '');
+
+ // Find the command.
+ var pos = cmd_line.indexOf(' ');
+ var cmd;
+ var args;
+ if (pos == -1) {
+ cmd = cmd_line;
+ args = '';
+ } else {
+ cmd = cmd_line.slice(0, pos);
+ args = cmd_line.slice(pos).replace(/^\s+|\s+$/g, '');
+ }
+
+ // Switch on command.
+ switch (cmd) {
+ case 'continue':
+ case 'c':
+ this.request_ = this.continueCommandToJSONRequest_(args);
+ break;
+
+ case 'step':
+ case 's':
+ this.request_ = this.stepCommandToJSONRequest_(args);
+ break;
+
+ case 'backtrace':
+ case 'bt':
+ this.request_ = this.backtraceCommandToJSONRequest_(args);
+ break;
+
+ case 'frame':
+ case 'f':
+ this.request_ = this.frameCommandToJSONRequest_(args);
+ break;
+
+ case 'scopes':
+ this.request_ = this.scopesCommandToJSONRequest_(args);
+ break;
+
+ case 'scope':
+ this.request_ = this.scopeCommandToJSONRequest_(args);
+ break;
+
+ case 'print':
+ case 'p':
+ this.request_ = this.printCommandToJSONRequest_(args);
+ break;
+
+ case 'dir':
+ this.request_ = this.dirCommandToJSONRequest_(args);
+ break;
+
+ case 'references':
+ this.request_ = this.referencesCommandToJSONRequest_(args);
+ break;
+
+ case 'instances':
+ this.request_ = this.instancesCommandToJSONRequest_(args);
+ break;
+
+ case 'source':
+ this.request_ = this.sourceCommandToJSONRequest_(args);
+ break;
+
+ case 'scripts':
+ this.request_ = this.scriptsCommandToJSONRequest_(args);
+ break;
+
+ case 'break':
+ case 'b':
+ this.request_ = this.breakCommandToJSONRequest_(args);
+ break;
+
+ case 'clear':
+ this.request_ = this.clearCommandToJSONRequest_(args);
+ break;
+
+ case 'threads':
+ this.request_ = this.threadsCommandToJSONRequest_(args);
+ break;
+
+ case 'trace':
+ // Return undefined to indicate command handled internally (no JSON).
+ this.request_ = void 0;
+ this.traceCommand_(args);
+ break;
+
+ case 'help':
+ case '?':
+ this.helpCommand_(args);
+ // Return undefined to indicate command handled internally (no JSON).
+ this.request_ = void 0;
+ break;
+
+ default:
+ throw new Error('Unknown command "' + cmd + '"');
+ }
+
+ last_cmd = cmd;
+}
+
+DebugRequest.prototype.JSONRequest = function() {
+ return this.request_;
+}
+
+
+function RequestPacket(command) {
+ this.seq = 0;
+ this.type = 'request';
+ this.command = command;
+}
+
+
+RequestPacket.prototype.toJSONProtocol = function() {
+ // Encode the protocol header.
+ var json = '{';
+ json += '"seq":' + this.seq;
+ json += ',"type":"' + this.type + '"';
+ if (this.command) {
+ json += ',"command":' + StringToJSON_(this.command);
+ }
+ if (this.arguments) {
+ json += ',"arguments":';
+ // Encode the arguments part.
+ if (this.arguments.toJSONProtocol) {
+ json += this.arguments.toJSONProtocol()
+ } else {
+ json += SimpleObjectToJSON_(this.arguments);
+ }
+ }
+ json += '}';
+ return json;
+}
+
+
+DebugRequest.prototype.createRequest = function(command) {
+ return new RequestPacket(command);
+};
+
+
+// Create a JSON request for the evaluation command.
+DebugRequest.prototype.makeEvaluateJSONRequest_ = function(expression) {
+ // Global varaible used to store whether a handle was requested.
+ lookup_handle = null;
+ // Check if the expression is a handle id in the form #<handle>#.
+ var handle_match = expression.match(/^#([0-9]*)#$/);
+ if (handle_match) {
+ // Remember the handle requested in a global variable.
+ lookup_handle = parseInt(handle_match[1]);
+ // Build a lookup request.
+ var request = this.createRequest('lookup');
+ request.arguments = {};
+ request.arguments.handles = [ lookup_handle ];
+ return request.toJSONProtocol();
+ } else {
+ // Build an evaluate request.
+ var request = this.createRequest('evaluate');
+ request.arguments = {};
+ request.arguments.expression = expression;
+ // Request a global evaluation if there is no current frame.
+ if (Debug.State.currentFrame == kNoFrame) {
+ request.arguments.global = true;
+ }
+ return request.toJSONProtocol();
+ }
+};
+
+
+// Create a JSON request for the references/instances command.
+DebugRequest.prototype.makeReferencesJSONRequest_ = function(handle, type) {
+ // Build a references request.
+ var handle_match = handle.match(/^#([0-9]*)#$/);
+ if (handle_match) {
+ var request = this.createRequest('references');
+ request.arguments = {};
+ request.arguments.type = type;
+ request.arguments.handle = parseInt(handle_match[1]);
+ return request.toJSONProtocol();
+ } else {
+ throw new Error('Invalid object id.');
+ }
+};
+
+
+// Create a JSON request for the continue command.
+DebugRequest.prototype.continueCommandToJSONRequest_ = function(args) {
+ var request = this.createRequest('continue');
+ return request.toJSONProtocol();
+};
+
+
+// Create a JSON request for the step command.
+DebugRequest.prototype.stepCommandToJSONRequest_ = function(args) {
+ // Requesting a step is through the continue command with additional
+ // arguments.
+ var request = this.createRequest('continue');
+ request.arguments = {};
+
+ // Process arguments if any.
+ if (args && args.length > 0) {
+ args = args.split(/\s*[ ]+\s*/g);
+
+ if (args.length > 2) {
+ throw new Error('Invalid step arguments.');
+ }
+
+ if (args.length > 0) {
+ // Get step count argument if any.
+ if (args.length == 2) {
+ var stepcount = parseInt(args[1]);
+ if (isNaN(stepcount) || stepcount <= 0) {
+ throw new Error('Invalid step count argument "' + args[0] + '".');
+ }
+ request.arguments.stepcount = stepcount;
+ }
+
+ // Get the step action.
+ switch (args[0]) {
+ case 'in':
+ case 'i':
+ request.arguments.stepaction = 'in';
+ break;
+
+ case 'min':
+ case 'm':
+ request.arguments.stepaction = 'min';
+ break;
+
+ case 'next':
+ case 'n':
+ request.arguments.stepaction = 'next';
+ break;
+
+ case 'out':
+ case 'o':
+ request.arguments.stepaction = 'out';
+ break;
+
+ default:
+ throw new Error('Invalid step argument "' + args[0] + '".');
+ }
+ }
+ } else {
+ // Default is step next.
+ request.arguments.stepaction = 'next';
+ }
+
+ return request.toJSONProtocol();
+};
+
+
+// Create a JSON request for the backtrace command.
+DebugRequest.prototype.backtraceCommandToJSONRequest_ = function(args) {
+ // Build a backtrace request from the text command.
+ var request = this.createRequest('backtrace');
+
+ // Default is to show top 10 frames.
+ request.arguments = {};
+ request.arguments.fromFrame = 0;
+ request.arguments.toFrame = 10;
+
+ args = args.split(/\s*[ ]+\s*/g);
+ if (args.length == 1 && args[0].length > 0) {
+ var frameCount = parseInt(args[0]);
+ if (frameCount > 0) {
+ // Show top frames.
+ request.arguments.fromFrame = 0;
+ request.arguments.toFrame = frameCount;
+ } else {
+ // Show bottom frames.
+ request.arguments.fromFrame = 0;
+ request.arguments.toFrame = -frameCount;
+ request.arguments.bottom = true;
+ }
+ } else if (args.length == 2) {
+ var fromFrame = parseInt(args[0]);
+ var toFrame = parseInt(args[1]);
+ if (isNaN(fromFrame) || fromFrame < 0) {
+ throw new Error('Invalid start frame argument "' + args[0] + '".');
+ }
+ if (isNaN(toFrame) || toFrame < 0) {
+ throw new Error('Invalid end frame argument "' + args[1] + '".');
+ }
+ if (fromFrame > toFrame) {
+ throw new Error('Invalid arguments start frame cannot be larger ' +
+ 'than end frame.');
+ }
+ // Show frame range.
+ request.arguments.fromFrame = fromFrame;
+ request.arguments.toFrame = toFrame + 1;
+ } else if (args.length > 2) {
+ throw new Error('Invalid backtrace arguments.');
+ }
+
+ return request.toJSONProtocol();
+};
+
+
+// Create a JSON request for the frame command.
+DebugRequest.prototype.frameCommandToJSONRequest_ = function(args) {
+ // Build a frame request from the text command.
+ var request = this.createRequest('frame');
+ args = args.split(/\s*[ ]+\s*/g);
+ if (args.length > 0 && args[0].length > 0) {
+ request.arguments = {};
+ request.arguments.number = args[0];
+ }
+ return request.toJSONProtocol();
+};
+
+
+// Create a JSON request for the scopes command.
+DebugRequest.prototype.scopesCommandToJSONRequest_ = function(args) {
+ // Build a scopes request from the text command.
+ var request = this.createRequest('scopes');
+ return request.toJSONProtocol();
+};
+
+
+// Create a JSON request for the scope command.
+DebugRequest.prototype.scopeCommandToJSONRequest_ = function(args) {
+ // Build a scope request from the text command.
+ var request = this.createRequest('scope');
+ args = args.split(/\s*[ ]+\s*/g);
+ if (args.length > 0 && args[0].length > 0) {
+ request.arguments = {};
+ request.arguments.number = args[0];
+ }
+ return request.toJSONProtocol();
+};
+
+
+// Create a JSON request for the print command.
+DebugRequest.prototype.printCommandToJSONRequest_ = function(args) {
+ // Build an evaluate request from the text command.
+ if (args.length == 0) {
+ throw new Error('Missing expression.');
+ }
+ return this.makeEvaluateJSONRequest_(args);
+};
+
+
+// Create a JSON request for the dir command.
+DebugRequest.prototype.dirCommandToJSONRequest_ = function(args) {
+ // Build an evaluate request from the text command.
+ if (args.length == 0) {
+ throw new Error('Missing expression.');
+ }
+ return this.makeEvaluateJSONRequest_(args);
+};
+
+
+// Create a JSON request for the references command.
+DebugRequest.prototype.referencesCommandToJSONRequest_ = function(args) {
+ // Build an evaluate request from the text command.
+ if (args.length == 0) {
+ throw new Error('Missing object id.');
+ }
+
+ return this.makeReferencesJSONRequest_(args, 'referencedBy');
+};
+
+
+// Create a JSON request for the instances command.
+DebugRequest.prototype.instancesCommandToJSONRequest_ = function(args) {
+ // Build an evaluate request from the text command.
+ if (args.length == 0) {
+ throw new Error('Missing object id.');
+ }
+
+ // Build a references request.
+ return this.makeReferencesJSONRequest_(args, 'constructedBy');
+};
+
+
+// Create a JSON request for the source command.
+DebugRequest.prototype.sourceCommandToJSONRequest_ = function(args) {
+ // Build a evaluate request from the text command.
+ var request = this.createRequest('source');
+
+ // Default is ten lines starting five lines before the current location.
+ var from = Debug.State.currentSourceLine - 5;
+ var lines = 10;
+
+ // Parse the arguments.
+ args = args.split(/\s*[ ]+\s*/g);
+ if (args.length > 1 && args[0].length > 0 && args[1].length > 0) {
+ from = parseInt(args[0]) - 1;
+ lines = parseInt(args[1]);
+ } else if (args.length > 0 && args[0].length > 0) {
+ from = parseInt(args[0]) - 1;
+ }
+
+ if (from < 0) from = 0;
+ if (lines < 0) lines = 10;
+
+ // Request source arround current source location.
+ request.arguments = {};
+ request.arguments.fromLine = from;
+ request.arguments.toLine = from + lines;
+
+ return request.toJSONProtocol();
+};
+
+
+// Create a JSON request for the scripts command.
+DebugRequest.prototype.scriptsCommandToJSONRequest_ = function(args) {
+ // Build a evaluate request from the text command.
+ var request = this.createRequest('scripts');
+
+ // Process arguments if any.
+ if (args && args.length > 0) {
+ args = args.split(/\s*[ ]+\s*/g);
+
+ if (args.length > 1) {
+ throw new Error('Invalid scripts arguments.');
+ }
+
+ request.arguments = {};
+ switch (args[0]) {
+ case 'natives':
+ request.arguments.types = ScriptTypeFlag(Debug.ScriptType.Native);
+ break;
+
+ case 'extensions':
+ request.arguments.types = ScriptTypeFlag(Debug.ScriptType.Extension);
+ break;
+
+ case 'all':
+ request.arguments.types =
+ ScriptTypeFlag(Debug.ScriptType.Normal) |
+ ScriptTypeFlag(Debug.ScriptType.Native) |
+ ScriptTypeFlag(Debug.ScriptType.Extension);
+ break;
+
+ default:
+ throw new Error('Invalid argument "' + args[0] + '".');
+ }
+ }
+
+ return request.toJSONProtocol();
+};
+
+
+// Create a JSON request for the break command.
+DebugRequest.prototype.breakCommandToJSONRequest_ = function(args) {
+ // Build a evaluate request from the text command.
+ var request = this.createRequest('setbreakpoint');
+
+ // Process arguments if any.
+ if (args && args.length > 0) {
+ var target = args;
+ var type = 'function';
+ var line;
+ var column;
+ var condition;
+ var pos;
+
+ // Check for breakpoint condition.
+ pos = args.indexOf(' ');
+ if (pos > 0) {
+ target = args.substring(0, pos);
+ condition = args.substring(pos + 1, args.length);
+ }
+
+ // Check for script breakpoint (name:line[:column]). If no ':' in break
+ // specification it is considered a function break point.
+ pos = target.indexOf(':');
+ if (pos > 0) {
+ type = 'script';
+ var tmp = target.substring(pos + 1, target.length);
+ target = target.substring(0, pos);
+
+ // Check for both line and column.
+ pos = tmp.indexOf(':');
+ if (pos > 0) {
+ column = parseInt(tmp.substring(pos + 1, tmp.length)) - 1;
+ line = parseInt(tmp.substring(0, pos)) - 1;
+ } else {
+ line = parseInt(tmp) - 1;
+ }
+ } else if (target[0] == '#' && target[target.length - 1] == '#') {
+ type = 'handle';
+ target = target.substring(1, target.length - 1);
+ } else {
+ type = 'function';
+ }
+
+ request.arguments = {};
+ request.arguments.type = type;
+ request.arguments.target = target;
+ request.arguments.line = line;
+ request.arguments.column = column;
+ request.arguments.condition = condition;
+ } else {
+ throw new Error('Invalid break arguments.');
+ }
+
+ return request.toJSONProtocol();
+};
+
+
+// Create a JSON request for the clear command.
+DebugRequest.prototype.clearCommandToJSONRequest_ = function(args) {
+ // Build a evaluate request from the text command.
+ var request = this.createRequest('clearbreakpoint');
+
+ // Process arguments if any.
+ if (args && args.length > 0) {
+ request.arguments = {};
+ request.arguments.breakpoint = parseInt(args);
+ } else {
+ throw new Error('Invalid break arguments.');
+ }
+
+ return request.toJSONProtocol();
+};
+
+
+// Create a JSON request for the threads command.
+DebugRequest.prototype.threadsCommandToJSONRequest_ = function(args) {
+ // Build a threads request from the text command.
+ var request = this.createRequest('threads');
+ return request.toJSONProtocol();
+};
+
+
+// Handle the trace command.
+DebugRequest.prototype.traceCommand_ = function(args) {
+ // Process arguments.
+ if (args && args.length > 0) {
+ if (args == 'compile') {
+ trace_compile = !trace_compile;
+ print('Tracing of compiled scripts ' + (trace_compile ? 'on' : 'off'));
+ } else {
+ throw new Error('Invalid trace arguments.');
+ }
+ } else {
+ throw new Error('Invalid trace arguments.');
+ }
+}
+
+// Handle the help command.
+DebugRequest.prototype.helpCommand_ = function(args) {
+ // Help os quite simple.
+ if (args && args.length > 0) {
+ print('warning: arguments to \'help\' are ignored');
+ }
+
+ print('break location [condition]');
+ print(' break on named function: location is a function name');
+ print(' break on function: location is #<id>#');
+ print(' break on script position: location is name:line[:column]');
+ print('clear <breakpoint #>');
+ print('backtrace [n] | [-n] | [from to]');
+ print('frame <frame #>');
+ print('scopes');
+ print('scope <scope #>');
+ print('step [in | next | out| min [step count]]');
+ print('print <expression>');
+ print('dir <expression>');
+ print('source [from line [num lines]]');
+ print('scripts');
+ print('continue');
+ print('trace compile');
+ print('help');
+}
+
+
+function formatHandleReference_(value) {
+ if (value.handle() >= 0) {
+ return '#' + value.handle() + '#';
+ } else {
+ return '#Transient#';
+ }
+}
+
+
+function formatObject_(value, include_properties) {
+ var result = '';
+ result += formatHandleReference_(value);
+ result += ', type: object'
+ result += ', constructor ';
+ var ctor = value.constructorFunctionValue();
+ result += formatHandleReference_(ctor);
+ result += ', __proto__ ';
+ var proto = value.protoObjectValue();
+ result += formatHandleReference_(proto);
+ result += ', ';
+ result += value.propertyCount();
+ result += ' properties.';
+ if (include_properties) {
+ result += '\n';
+ for (var i = 0; i < value.propertyCount(); i++) {
+ result += ' ';
+ result += value.propertyName(i);
+ result += ': ';
+ var property_value = value.propertyValue(i);
+ if (property_value instanceof ProtocolReference) {
+ result += '<no type>';
+ } else {
+ if (property_value && property_value.type()) {
+ result += property_value.type();
+ } else {
+ result += '<no type>';
+ }
+ }
+ result += ' ';
+ result += formatHandleReference_(property_value);
+ result += '\n';
+ }
+ }
+ return result;
+}
+
+
+function formatScope_(scope) {
+ var result = '';
+ var index = scope.index;
+ result += '#' + (index <= 9 ? '0' : '') + index;
+ result += ' ';
+ switch (scope.type) {
+ case Debug.ScopeType.Global:
+ result += 'Global, ';
+ result += '#' + scope.object.ref + '#';
+ break;
+ case Debug.ScopeType.Local:
+ result += 'Local';
+ break;
+ case Debug.ScopeType.With:
+ result += 'With, ';
+ result += '#' + scope.object.ref + '#';
+ break;
+ case Debug.ScopeType.Catch:
+ result += 'Catch, ';
+ result += '#' + scope.object.ref + '#';
+ break;
+ case Debug.ScopeType.Closure:
+ result += 'Closure';
+ break;
+ default:
+ result += 'UNKNOWN';
+ }
+ return result;
+}
+
+
+// Convert a JSON response to text for display in a text based debugger.
+function DebugResponseDetails(response) {
+ details = {text:'', running:false}
+
+ try {
+ if (!response.success()) {
+ details.text = response.message();
+ return details;
+ }
+
+ // Get the running state.
+ details.running = response.running();
+
+ var body = response.body();
+ var result = '';
+ switch (response.command()) {
+ case 'setbreakpoint':
+ result = 'set breakpoint #';
+ result += body.breakpoint;
+ details.text = result;
+ break;
+
+ case 'clearbreakpoint':
+ result = 'cleared breakpoint #';
+ result += body.breakpoint;
+ details.text = result;
+ break;
+
+ case 'backtrace':
+ if (body.totalFrames == 0) {
+ result = '(empty stack)';
+ } else {
+ var result = 'Frames #' + body.fromFrame + ' to #' +
+ (body.toFrame - 1) + ' of ' + body.totalFrames + '\n';
+ for (i = 0; i < body.frames.length; i++) {
+ if (i != 0) result += '\n';
+ result += body.frames[i].text;
+ }
+ }
+ details.text = result;
+ break;
+
+ case 'frame':
+ details.text = SourceUnderline(body.sourceLineText,
+ body.column);
+ Debug.State.currentSourceLine = body.line;
+ Debug.State.currentFrame = body.index;
+ break;
+
+ case 'scopes':
+ if (body.totalScopes == 0) {
+ result = '(no scopes)';
+ } else {
+ result = 'Scopes #' + body.fromScope + ' to #' +
+ (body.toScope - 1) + ' of ' + body.totalScopes + '\n';
+ for (i = 0; i < body.scopes.length; i++) {
+ if (i != 0) {
+ result += '\n';
+ }
+ result += formatScope_(body.scopes[i]);
+ }
+ }
+ details.text = result;
+ break;
+
+ case 'scope':
+ result += formatScope_(body);
+ result += '\n';
+ var scope_object_value = response.lookup(body.object.ref);
+ result += formatObject_(scope_object_value, true);
+ details.text = result;
+ break;
+
+ case 'evaluate':
+ case 'lookup':
+ if (last_cmd == 'p' || last_cmd == 'print') {
+ result = body.text;
+ } else {
+ var value;
+ if (lookup_handle) {
+ value = response.bodyValue(lookup_handle);
+ } else {
+ value = response.bodyValue();
+ }
+ if (value.isObject()) {
+ result += formatObject_(value, true);
+ } else {
+ result += 'type: ';
+ result += value.type();
+ if (!value.isUndefined() && !value.isNull()) {
+ result += ', ';
+ if (value.isString()) {
+ result += '"';
+ }
+ result += value.value();
+ if (value.isString()) {
+ result += '"';
+ }
+ }
+ result += '\n';
+ }
+ }
+ details.text = result;
+ break;
+
+ case 'references':
+ var count = body.length;
+ result += 'found ' + count + ' objects';
+ result += '\n';
+ for (var i = 0; i < count; i++) {
+ var value = response.bodyValue(i);
+ result += formatObject_(value, false);
+ result += '\n';
+ }
+ details.text = result;
+ break;
+
+ case 'source':
+ // Get the source from the response.
+ var source = body.source;
+ var from_line = body.fromLine + 1;
+ var lines = source.split('\n');
+ var maxdigits = 1 + Math.floor(log10(from_line + lines.length));
+ if (maxdigits < 3) {
+ maxdigits = 3;
+ }
+ var result = '';
+ for (var num = 0; num < lines.length; num++) {
+ // Check if there's an extra newline at the end.
+ if (num == (lines.length - 1) && lines[num].length == 0) {
+ break;
+ }
+
+ var current_line = from_line + num;
+ spacer = maxdigits - (1 + Math.floor(log10(current_line)));
+ if (current_line == Debug.State.currentSourceLine + 1) {
+ for (var i = 0; i < maxdigits; i++) {
+ result += '>';
+ }
+ result += ' ';
+ } else {
+ for (var i = 0; i < spacer; i++) {
+ result += ' ';
+ }
+ result += current_line + ': ';
+ }
+ result += lines[num];
+ result += '\n';
+ }
+ details.text = result;
+ break;
+
+ case 'scripts':
+ var result = '';
+ for (i = 0; i < body.length; i++) {
+ if (i != 0) result += '\n';
+ if (body[i].id) {
+ result += body[i].id;
+ } else {
+ result += '[no id]';
+ }
+ result += ', ';
+ if (body[i].name) {
+ result += body[i].name;
+ } else {
+ if (body[i].compilationType == Debug.ScriptCompilationType.Eval) {
+ result += 'eval from ';
+ var script_value = response.lookup(body[i].evalFromScript.ref);
+ result += ' ' + script_value.field('name');
+ result += ':' + (body[i].evalFromLocation.line + 1);
+ result += ':' + body[i].evalFromLocation.column;
+ } else if (body[i].compilationType ==
+ Debug.ScriptCompilationType.JSON) {
+ result += 'JSON ';
+ } else { // body[i].compilation == Debug.ScriptCompilationType.Host
+ result += '[unnamed] ';
+ }
+ }
+ result += ' (lines: ';
+ result += body[i].lineCount;
+ result += ', length: ';
+ result += body[i].sourceLength;
+ if (body[i].type == Debug.ScriptType.Native) {
+ result += ', native';
+ } else if (body[i].type == Debug.ScriptType.Extension) {
+ result += ', extension';
+ }
+ result += '), [';
+ var sourceStart = body[i].sourceStart;
+ if (sourceStart.length > 40) {
+ sourceStart = sourceStart.substring(0, 37) + '...';
+ }
+ result += sourceStart;
+ result += ']';
+ }
+ details.text = result;
+ break;
+
+ case 'threads':
+ var result = 'Active V8 threads: ' + body.totalThreads + '\n';
+ body.threads.sort(function(a, b) { return a.id - b.id; });
+ for (i = 0; i < body.threads.length; i++) {
+ result += body.threads[i].current ? '*' : ' ';
+ result += ' ';
+ result += body.threads[i].id;
+ result += '\n';
+ }
+ details.text = result;
+ break;
+
+ case 'continue':
+ details.text = "(running)";
+ break;
+
+ default:
+ details.text =
+ 'Response for unknown command \'' + response.command + '\'' +
+ ' (' + json_response + ')';
+ }
+ } catch (e) {
+ details.text = 'Error: "' + e + '" formatting response';
+ }
+
+ return details;
+};
+
+
+/**
+ * Protocol packages send from the debugger.
+ * @param {string} json - raw protocol packet as JSON string.
+ * @constructor
+ */
+function ProtocolPackage(json) {
+ this.packet_ = JSON.parse(json);
+ this.refs_ = [];
+ if (this.packet_.refs) {
+ for (var i = 0; i < this.packet_.refs.length; i++) {
+ this.refs_[this.packet_.refs[i].handle] = this.packet_.refs[i];
+ }
+ }
+}
+
+
+/**
+ * Get the packet type.
+ * @return {String} the packet type
+ */
+ProtocolPackage.prototype.type = function() {
+ return this.packet_.type;
+}
+
+
+/**
+ * Get the packet event.
+ * @return {Object} the packet event
+ */
+ProtocolPackage.prototype.event = function() {
+ return this.packet_.event;
+}
+
+
+/**
+ * Get the packet request sequence.
+ * @return {number} the packet request sequence
+ */
+ProtocolPackage.prototype.requestSeq = function() {
+ return this.packet_.request_seq;
+}
+
+
+/**
+ * Get the packet request sequence.
+ * @return {number} the packet request sequence
+ */
+ProtocolPackage.prototype.running = function() {
+ return this.packet_.running ? true : false;
+}
+
+
+ProtocolPackage.prototype.success = function() {
+ return this.packet_.success ? true : false;
+}
+
+
+ProtocolPackage.prototype.message = function() {
+ return this.packet_.message;
+}
+
+
+ProtocolPackage.prototype.command = function() {
+ return this.packet_.command;
+}
+
+
+ProtocolPackage.prototype.body = function() {
+ return this.packet_.body;
+}
+
+
+ProtocolPackage.prototype.bodyValue = function(index) {
+ if (index != null) {
+ return new ProtocolValue(this.packet_.body[index], this);
+ } else {
+ return new ProtocolValue(this.packet_.body, this);
+ }
+}
+
+
+ProtocolPackage.prototype.body = function() {
+ return this.packet_.body;
+}
+
+
+ProtocolPackage.prototype.lookup = function(handle) {
+ var value = this.refs_[handle];
+ if (value) {
+ return new ProtocolValue(value, this);
+ } else {
+ return new ProtocolReference(handle);
+ }
+}
+
+
+function ProtocolValue(value, packet) {
+ this.value_ = value;
+ this.packet_ = packet;
+}
+
+
+/**
+ * Get the value type.
+ * @return {String} the value type
+ */
+ProtocolValue.prototype.type = function() {
+ return this.value_.type;
+}
+
+
+/**
+ * Get a metadata field from a protocol value.
+ * @return {Object} the metadata field value
+ */
+ProtocolValue.prototype.field = function(name) {
+ return this.value_[name];
+}
+
+
+/**
+ * Check is the value is a primitive value.
+ * @return {boolean} true if the value is primitive
+ */
+ProtocolValue.prototype.isPrimitive = function() {
+ return this.isUndefined() || this.isNull() || this.isBoolean() ||
+ this.isNumber() || this.isString();
+}
+
+
+/**
+ * Get the object handle.
+ * @return {number} the value handle
+ */
+ProtocolValue.prototype.handle = function() {
+ return this.value_.handle;
+}
+
+
+/**
+ * Check is the value is undefined.
+ * @return {boolean} true if the value is undefined
+ */
+ProtocolValue.prototype.isUndefined = function() {
+ return this.value_.type == 'undefined';
+}
+
+
+/**
+ * Check is the value is null.
+ * @return {boolean} true if the value is null
+ */
+ProtocolValue.prototype.isNull = function() {
+ return this.value_.type == 'null';
+}
+
+
+/**
+ * Check is the value is a boolean.
+ * @return {boolean} true if the value is a boolean
+ */
+ProtocolValue.prototype.isBoolean = function() {
+ return this.value_.type == 'boolean';
+}
+
+
+/**
+ * Check is the value is a number.
+ * @return {boolean} true if the value is a number
+ */
+ProtocolValue.prototype.isNumber = function() {
+ return this.value_.type == 'number';
+}
+
+
+/**
+ * Check is the value is a string.
+ * @return {boolean} true if the value is a string
+ */
+ProtocolValue.prototype.isString = function() {
+ return this.value_.type == 'string';
+}
+
+
+/**
+ * Check is the value is an object.
+ * @return {boolean} true if the value is an object
+ */
+ProtocolValue.prototype.isObject = function() {
+ return this.value_.type == 'object' || this.value_.type == 'function' ||
+ this.value_.type == 'error' || this.value_.type == 'regexp';
+}
+
+
+/**
+ * Get the constructor function
+ * @return {ProtocolValue} constructor function
+ */
+ProtocolValue.prototype.constructorFunctionValue = function() {
+ var ctor = this.value_.constructorFunction;
+ return this.packet_.lookup(ctor.ref);
+}
+
+
+/**
+ * Get the __proto__ value
+ * @return {ProtocolValue} __proto__ value
+ */
+ProtocolValue.prototype.protoObjectValue = function() {
+ var proto = this.value_.protoObject;
+ return this.packet_.lookup(proto.ref);
+}
+
+
+/**
+ * Get the number og properties.
+ * @return {number} the number of properties
+ */
+ProtocolValue.prototype.propertyCount = function() {
+ return this.value_.properties ? this.value_.properties.length : 0;
+}
+
+
+/**
+ * Get the specified property name.
+ * @return {string} property name
+ */
+ProtocolValue.prototype.propertyName = function(index) {
+ var property = this.value_.properties[index];
+ return property.name;
+}
+
+
+/**
+ * Return index for the property name.
+ * @param name The property name to look for
+ * @return {number} index for the property name
+ */
+ProtocolValue.prototype.propertyIndex = function(name) {
+ for (var i = 0; i < this.propertyCount(); i++) {
+ if (this.value_.properties[i].name == name) {
+ return i;
+ }
+ }
+ return null;
+}
+
+
+/**
+ * Get the specified property value.
+ * @return {ProtocolValue} property value
+ */
+ProtocolValue.prototype.propertyValue = function(index) {
+ var property = this.value_.properties[index];
+ return this.packet_.lookup(property.ref);
+}
+
+
+/**
+ * Check is the value is a string.
+ * @return {boolean} true if the value is a string
+ */
+ProtocolValue.prototype.value = function() {
+ return this.value_.value;
+}
+
+
+function ProtocolReference(handle) {
+ this.handle_ = handle;
+}
+
+
+ProtocolReference.prototype.handle = function() {
+ return this.handle_;
+}
+
+
+function MakeJSONPair_(name, value) {
+ return '"' + name + '":' + value;
+}
+
+
+function ArrayToJSONObject_(content) {
+ return '{' + content.join(',') + '}';
+}
+
+
+function ArrayToJSONArray_(content) {
+ return '[' + content.join(',') + ']';
+}
+
+
+function BooleanToJSON_(value) {
+ return String(value);
+}
+
+
+function NumberToJSON_(value) {
+ return String(value);
+}
+
+
+// Mapping of some control characters to avoid the \uXXXX syntax for most
+// commonly used control cahracters.
+const ctrlCharMap_ = {
+ '\b': '\\b',
+ '\t': '\\t',
+ '\n': '\\n',
+ '\f': '\\f',
+ '\r': '\\r',
+ '"' : '\\"',
+ '\\': '\\\\'
+};
+
+
+// Regular expression testing for ", \ and control characters (0x00 - 0x1F).
+const ctrlCharTest_ = new RegExp('["\\\\\x00-\x1F]');
+
+
+// Regular expression matching ", \ and control characters (0x00 - 0x1F)
+// globally.
+const ctrlCharMatch_ = new RegExp('["\\\\\x00-\x1F]', 'g');
+
+
+/**
+ * Convert a String to its JSON representation (see http://www.json.org/). To
+ * avoid depending on the String object this method calls the functions in
+ * string.js directly and not through the value.
+ * @param {String} value The String value to format as JSON
+ * @return {string} JSON formatted String value
+ */
+function StringToJSON_(value) {
+ // Check for" , \ and control characters (0x00 - 0x1F). No need to call
+ // RegExpTest as ctrlchar is constructed using RegExp.
+ if (ctrlCharTest_.test(value)) {
+ // Replace ", \ and control characters (0x00 - 0x1F).
+ return '"' +
+ value.replace(ctrlCharMatch_, function (char) {
+ // Use charmap if possible.
+ var mapped = ctrlCharMap_[char];
+ if (mapped) return mapped;
+ mapped = char.charCodeAt();
+ // Convert control character to unicode escape sequence.
+ return '\\u00' +
+ '0' + // TODO %NumberToRadixString(Math.floor(mapped / 16), 16) +
+ '0' // TODO %NumberToRadixString(mapped % 16, 16);
+ })
+ + '"';
+ }
+
+ // Simple string with no special characters.
+ return '"' + value + '"';
+}
+
+
+/**
+ * Convert a Date to ISO 8601 format. To avoid depending on the Date object
+ * this method calls the functions in date.js directly and not through the
+ * value.
+ * @param {Date} value The Date value to format as JSON
+ * @return {string} JSON formatted Date value
+ */
+function DateToISO8601_(value) {
+ function f(n) {
+ return n < 10 ? '0' + n : n;
+ }
+ function g(n) {
+ return n < 10 ? '00' + n : n < 100 ? '0' + n : n;
+ }
+ return builtins.GetUTCFullYearFrom(value) + '-' +
+ f(builtins.GetUTCMonthFrom(value) + 1) + '-' +
+ f(builtins.GetUTCDateFrom(value)) + 'T' +
+ f(builtins.GetUTCHoursFrom(value)) + ':' +
+ f(builtins.GetUTCMinutesFrom(value)) + ':' +
+ f(builtins.GetUTCSecondsFrom(value)) + '.' +
+ g(builtins.GetUTCMillisecondsFrom(value)) + 'Z';
+}
+
+
+/**
+ * Convert a Date to ISO 8601 format. To avoid depending on the Date object
+ * this method calls the functions in date.js directly and not through the
+ * value.
+ * @param {Date} value The Date value to format as JSON
+ * @return {string} JSON formatted Date value
+ */
+function DateToJSON_(value) {
+ return '"' + DateToISO8601_(value) + '"';
+}
+
+
+/**
+ * Convert an Object to its JSON representation (see http://www.json.org/).
+ * This implementation simply runs through all string property names and adds
+ * each property to the JSON representation for some predefined types. For type
+ * "object" the function calls itself recursively unless the object has the
+ * function property "toJSONProtocol" in which case that is used. This is not
+ * a general implementation but sufficient for the debugger. Note that circular
+ * structures will cause infinite recursion.
+ * @param {Object} object The object to format as JSON
+ * @return {string} JSON formatted object value
+ */
+function SimpleObjectToJSON_(object) {
+ var content = [];
+ for (var key in object) {
+ // Only consider string keys.
+ if (typeof key == 'string') {
+ var property_value = object[key];
+
+ // Format the value based on its type.
+ var property_value_json;
+ switch (typeof property_value) {
+ case 'object':
+ if (typeof property_value.toJSONProtocol == 'function') {
+ property_value_json = property_value.toJSONProtocol(true)
+ } else if (property_value.constructor.name == 'Array'){
+ property_value_json = SimpleArrayToJSON_(property_value);
+ } else {
+ property_value_json = SimpleObjectToJSON_(property_value);
+ }
+ break;
+
+ case 'boolean':
+ property_value_json = BooleanToJSON_(property_value);
+ break;
+
+ case 'number':
+ property_value_json = NumberToJSON_(property_value);
+ break;
+
+ case 'string':
+ property_value_json = StringToJSON_(property_value);
+ break;
+
+ default:
+ property_value_json = null;
+ }
+
+ // Add the property if relevant.
+ if (property_value_json) {
+ content.push(StringToJSON_(key) + ':' + property_value_json);
+ }
+ }
+ }
+
+ // Make JSON object representation.
+ return '{' + content.join(',') + '}';
+}
+
+
+/**
+ * Convert an array to its JSON representation. This is a VERY simple
+ * implementation just to support what is needed for the debugger.
+ * @param {Array} arrya The array to format as JSON
+ * @return {string} JSON formatted array value
+ */
+function SimpleArrayToJSON_(array) {
+ // Make JSON array representation.
+ var json = '[';
+ for (var i = 0; i < array.length; i++) {
+ if (i != 0) {
+ json += ',';
+ }
+ var elem = array[i];
+ if (elem.toJSONProtocol) {
+ json += elem.toJSONProtocol(true)
+ } else if (typeof(elem) === 'object') {
+ json += SimpleObjectToJSON_(elem);
+ } else if (typeof(elem) === 'boolean') {
+ json += BooleanToJSON_(elem);
+ } else if (typeof(elem) === 'number') {
+ json += NumberToJSON_(elem);
+ } else if (typeof(elem) === 'string') {
+ json += StringToJSON_(elem);
+ } else {
+ json += elem;
+ }
+ }
+ json += ']';
+ return json;
+}