Merge DevTools Refactor CL to Blink36

Source/bindings/dart/DartDebugHooks.js

-/*
- * Copyright (C) 2012 Google Inc. 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.
- */
-
-(function() {
-
-// Monkey patch the ScopeType class defined by the V8 engine.
-ScopeType.Instance = 6;
-ScopeType.Class = 7;
-ScopeType.Library = 8;
-
-var DartDebug = {};
-
-DartDebug.ExecutionState = function(callFrames)
-{
-    this._callFrames = [];
-    for (var i = 0; i < callFrames.length; ++i) {
-        this._callFrames.push(new DartDebug.FrameMirror(callFrames[i]));
-    }
-};
-
-DartDebug.ExecutionState.prototype = {
-    frameCount: function()
-    {
-        return this._callFrames.length;
-    },
-
-    frame: function(index)
-    {
-        return this._callFrames[index];
-    },
-
-    prepareStep: function(action, count)
-    {
-        if (action === Debug.StepAction.StepIn)
-            return DartDebug.nativeCallbacks.stepInto();
-        if (action === Debug.StepAction.StepNext)
-            return DartDebug.nativeCallbacks.stepOver();
-        if (action === Debug.StepAction.StepOut)
-            return DartDebug.nativeCallbacks.stepOut();
-    }
-};
-
-DartDebug.EventData = function(exception)
-{
-    this._exception = exception;
-};
-
-DartDebug.EventData.prototype = {
-    exception: function()
-    {
-        return this._exception;
-    }
-};
-
-DartDebug.Script = function(id, scriptData)
-{
-    this.id = id;
-    this.url = scriptData.scriptURL;
-    this.source = scriptData.source;
-    this.line_offset = 0;
-    this.column_offset = 0;
-    this.context_data = scriptData.contextData;
-    this.language = 'Dart';
-    this.libraryId = scriptData.libraryId;
-};
-
-DartDebug.Script.prototype = {
-    get line_ends()
-    {
-        var result = [];
-        var pos = this.source.indexOf('\n');
-        while (pos !== -1) {
-            result.push(pos);
-            pos = this.source.indexOf('\n', pos + 1);
-        }
-        result.push(this.source.length);
-        return result;
-    },
-
-    nameOrSourceURL: function()
-    {
-        return this.url;
-    }
-};
-
-DartDebug.FrameMirror = function(callFrame)
-{
-    this._callFrame = callFrame;
-    this._functionName = callFrame.functionName;
-    this._scriptId = DartDebug.scriptURLToScriptId[callFrame.scriptURL];
-    this._lineNumber = callFrame.lineNumber;
-    this._columnNumber = callFrame.columnNumber;
-    this._localScope = new DartDebug.ScopeMirror(callFrame.localScopeProxy, ScopeType.Local);
-    this._globalScope = new DartDebug.ScopeMirror(callFrame.libraryProxy, ScopeType.Global);
-    this._librariesScope = new DartDebug.ScopeMirror(callFrame.librariesProxy, ScopeType.Library);
-
-    this._scopes = [this._localScope];
-    if (callFrame.localScopeProxy.this) {
-        this._classInstanceScope = new DartDebug.ScopeMirror(callFrame.localScopeProxy.this, ScopeType.Instance);
-        this._scopes.push(this._classInstanceScope);
-    }
-    if (callFrame.classProxy) {
-        this._classScope = new DartDebug.ScopeMirror(callFrame.classProxy, ScopeType.Class);
-        this._scopes.push(this._classScope);
-    }
-    this._scopes.push(this._globalScope);
-    this._scopes.push(this._librariesScope);
-};
-
-DartDebug.FrameMirror.prototype = {
-    func: function()
-    {
-        var self = this;
-        return {
-            name: function() { return self._functionName; },
-            inferredName: function() { return self._functionName; },
-            script: function() { return { id: function() { return self._scriptId; } }; }
-        };
-    },
-
-    sourceLocation: function()
-    {
-        return { line: this._lineNumber, column: this._columnNumber };
-    },
-
-    scopeCount: function()
-    {
-        return this._scopes.length;
-    },
-
-    scope: function(index)
-    {
-        return this._scopes[index];
-    },
-
-    allScopes: function(fastAsyncScopes)
-    {
-        return this._scopes;
-    },
-
-    evaluate: function(expression, disableBreak)
-    {
-        var result = DartDebug.nativeCallbacks.invocationTrampoline(
-            DartDebug.nativeCallbacks.evaluateInScope,
-            [expression, this._localScope.receiver(), this._callFrame.functionProxy, this._callFrame.localVariables]);
-        return { value: function() { return result; } };
-    },
-
-    restart: function() {
-        return false; // Not yet supported by the Dart VM.
-    },
-
-    details: function() {
-        return this.details_;
-    },
-
-    get details_()
-    {
-        var receiver = this._localScope.receiver();
-        var func = this.func();
-        var sourceLocation = this.sourceLocation();
-        return {
-          receiver: function()
-          {
-            return receiver;
-          },
-
-          func: function()
-          {
-            return func;
-          },
-
-          sourceLocation: function()
-          {
-            return sourceLocation;
-          },
-
-          isAtReturn: function()
-          {
-            // FIXMEDART: actually determine whether we are at a return.
-            return false;
-          }
-        };
-    }
-};
-
-DartDebug.ScopeMirror = function(object, scopeType)
-{
-    this._object = object;
-    this._scopeType = scopeType;
-};
-
-DartDebug.ScopeMirror.prototype = {
-    scopeType: function()
-    {
-        return this._scopeType;
-    },
-
-    scopeObject: function()
-    {
-        var properties = [];
-        for (var name in this._object) {
-            if (name !== 'this')
-                properties.push(new DartDebug.PropertyMirror(name, this._object[name]));
-        }
-        return { properties: function() { return properties; } };
-    },
-
-    get details_()
-    {
-        var object = this._object;
-        var type = this._scopeType;
-        return {
-            object: function() { return object; },
-            type: function() { return type; }
-        };
-    },
-
-    details: function()
-    {
-        return this.details_;
-    },
-
-    receiver: function()
-    {
-        return this._object['this'];
-    }
-};
-
-DartDebug.PropertyMirror = function(name, value)
-{
-    this._name = name;
-    this._value = value;
-};
-
-DartDebug.PropertyMirror.prototype = {
-    name: function()
-    {
-        return this._name;
-    },
-
-    get value_()
-    {
-        return this._value;
-    }
-};
-
-DartDebug.isolates = {};
-
-DartDebug.scriptArray = [];
-DartDebug.scripts = {};
-DartDebug.scriptURLToScriptId = {};
-DartDebug.lastScriptId = 0;
-
-DartDebug.breakpoints = {};
-DartDebug.lastBreakpointId = 0;
-
-DartDebug.registerIsolate = function(isolateHandle)
-{
-    this.isolates[isolateHandle] = true;
-};
-
-DartDebug.unregisterIsolate = function(isolateHandle)
-{
-    delete this.isolates[isolateHandle];
-    if (Object.keys(this.isolates).length)
-        return;
-
-    // The page was destroyed.
-    DartDebug.scripts = {};
-    DartDebug.scriptArray = [];
-    DartDebug.scriptURLToScriptId = {};
-    DartDebug.libraryScopeCache = {};
-    DartDebug.breakpoints = {};
-};
-
-DartDebug.isolateLoaded = function(isolateHandle)
-{
-    var isolateScripts = DartDebug.nativeCallbacks.scriptsForIsolate(isolateHandle);
-    for (var i = 0; i < isolateScripts.length; ++i) {
-        var script = DartDebug.registerScript(isolateHandle, isolateScripts[i]);
-        if (!script)
-            continue;
-        var executionState = {};
-        var eventData = { script_: { script_: script } };
-        DartDebug.nativeCallbacks.handleDebugEvent(Debug.DebugEvent.AfterCompile, executionState, eventData);
-    }
-    DartDebug.nativeCallbacks.setExceptionPauseInfo(isolateHandle, Debug.isBreakOnException(), Debug.isBreakOnUncaughtException());
-};
-
-DartDebug.disable = function()
-{
-    for (var breakpointId in DartDebug.breakpoints) {
-        var vmBreakpoints = DartDebug.breakpoints[breakpointId].vmBreakpoints;
-        for (var i = 0; i < vmBreakpoints.length; ++i)
-            DartDebug.nativeCallbacks.removeBreakpoint(vmBreakpoints[i].isolateHandle, vmBreakpoints[i].id);
-    }
-    for (var isolateHandle in DartDebug.isolates) {
-        DartDebug.nativeCallbacks.setExceptionPauseInfo(isolateHandle, false, false);
-    }
-    DartDebug.breakpoints = {};
-    DartDebug.scripts = {};
-    DartDebug.scriptURLToScriptId = {};
-};
-
-DartDebug.registerScript = function(isolateHandle, scriptData)
-{
-    if (scriptData.scriptURL in DartDebug.scriptURLToScriptId)
-        return;
-
-    var scriptId = --this.lastScriptId;
-    var script = new DartDebug.Script(scriptId, scriptData);
-
-    DartDebug.scripts[scriptId] = script;
-    DartDebug.scriptArray.push(script);
-    DartDebug.scriptURLToScriptId[scriptData.scriptURL] = scriptId;
-
-    return script;
-};
-
-DartDebug.updateExceptionPauseInfo = function()
-{
-    for (var isolateHandle in DartDebug.isolates)
-        DartDebug.nativeCallbacks.setExceptionPauseInfo(isolateHandle, Debug.isBreakOnException(), Debug.isBreakOnUncaughtException());
-}
-
-var originals = {};
-
-Debug.dartScripts = function()
-{
-    for (var isolateHandle in DartDebug.isolates) {
-        var isolateScripts = DartDebug.nativeCallbacks.scriptsForIsolate(isolateHandle);
-        for (var i = 0; i < isolateScripts.length; ++i) {
-            DartDebug.registerScript(isolateHandle, isolateScripts[i]);
-        }
-    }
-    return DartDebug.scriptArray;
-};
-
-originals.setScriptBreakPointById = Debug.setScriptBreakPointById;
-
-Debug.setScriptBreakPointById = function(scriptId, lineNumber)
-{
-    var script = DartDebug.scripts[scriptId];
-    if (!script)
-        return originals.setScriptBreakPointById.apply(Debug, arguments);
-
-    var vmBreakpoints = [];
-    for (var isolateHandle in DartDebug.isolates) {
-        var vmBreakpointId = DartDebug.nativeCallbacks.setBreakpoint(isolateHandle, script.url, lineNumber + 1);
-        if (vmBreakpointId)
-            vmBreakpoints.push({ id: vmBreakpointId, isolateHandle: isolateHandle });
-    }
-
-    var breakpointId = 'dart-' + (++DartDebug.lastBreakpointId);
-    DartDebug.breakpoints[breakpointId] = { vmBreakpoints: vmBreakpoints };
-    return breakpointId;
-};
-
-originals.findBreakPointActualLocations = Debug.findBreakPointActualLocations;
-
-Debug.findBreakPointActualLocations = function(breakpointId)
-{
-    var breakpoint = DartDebug.breakpoints[breakpointId];
-    if (!breakpoint)
-        return originals.findBreakPointActualLocations.apply(Debug, arguments);
-
-    var locations = [];
-    var vmBreakpoints = breakpoint.vmBreakpoints;
-    for (var i = 0; i < vmBreakpoints.length; ++i) {
-        var lineNumber = DartDebug.nativeCallbacks.getBreakpointLine(vmBreakpoints[i].isolateHandle, vmBreakpoints[i].id);
-        // FIXME: provide column.
-        locations.push({ line: lineNumber - 1, column: 0 });
-    }
-    return locations;
-}
-
-originals.findBreakPoint = Debug.findBreakPoint;
-
-Debug.findBreakPoint = function(breakpointId, remove)
-{
-    var breakpoint = DartDebug.breakpoints[breakpointId];
-    if (!breakpoint)
-        return originals.findBreakPoint.apply(Debug, arguments);
-
-    if (remove) {
-        var vmBreakpoints = breakpoint.vmBreakpoints;
-        for (var i = 0; i < vmBreakpoints.length; ++i)
-            DartDebug.nativeCallbacks.removeBreakpoint(vmBreakpoints[i].isolateHandle, vmBreakpoints[i].id);
-        delete DartDebug.breakpoints[breakpointId];
-    }
-};
-
-
-originals.setBreakOnException = Debug.setBreakOnException;
-
-Debug.setBreakOnException = function()
-{
-    originals.setBreakOnException.apply(Debug);
-    DartDebug.updateExceptionPauseInfo();
-}
-
-originals.clearBreakOnException = Debug.clearBreakOnException;
-
-Debug.clearBreakOnException = function()
-{
-    originals.clearBreakOnException.apply(Debug);
-    DartDebug.updateExceptionPauseInfo();
-}
-
-originals.setBreakOnUncaughtException = Debug.setBreakOnUncaughtException;
-
-Debug.setBreakOnUncaughtException = function()
-{
-    originals.setBreakOnUncaughtException.apply(Debug);
-    DartDebug.updateExceptionPauseInfo();
-}
-
-originals.clearBreakOnUncaughtException = Debug.clearBreakOnUncaughtException;
-
-Debug.clearBreakOnUncaughtException = function()
-{
-    originals.clearBreakOnUncaughtException.apply(Debug);
-    DartDebug.updateExceptionPauseInfo();
-}
-
-return DartDebug;
-
-})()