Revert of [inspector] Initial import of v8_inspector.

src/inspector/DebuggerScript.js

Index: src/inspector/DebuggerScript.js
diff --git a/src/inspector/DebuggerScript.js b/src/inspector/DebuggerScript.js
deleted file mode 100644
index 18beac0e03ceea0d897f7d584a6a38984c51eddd..0000000000000000000000000000000000000000
--- a/src/inspector/DebuggerScript.js
+++ /dev/null
@@ -1,711 +0,0 @@
-/*
- * Copyright (C) 2010 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.
- */
-"use strict";
-
-(function () {
-
-var DebuggerScript = {};
-
-/** @enum */
-DebuggerScript.PauseOnExceptionsState = {
-    DontPauseOnExceptions: 0,
-    PauseOnAllExceptions: 1,
-    PauseOnUncaughtExceptions: 2
-};
-
-DebuggerScript._pauseOnExceptionsState = DebuggerScript.PauseOnExceptionsState.DontPauseOnExceptions;
-Debug.clearBreakOnException();
-Debug.clearBreakOnUncaughtException();
-
-/**
- * @param {?CompileEvent} eventData
- */
-DebuggerScript.getAfterCompileScript = function(eventData)
-{
-    var script = eventData.script().value();
-    if (!script.is_debugger_script)
-        return DebuggerScript._formatScript(eventData.script().value());
-    return null;
-}
-
-/** @type {!Map<!ScopeType, string>} */
-DebuggerScript._scopeTypeNames = new Map();
-DebuggerScript._scopeTypeNames.set(ScopeType.Global, "global");
-DebuggerScript._scopeTypeNames.set(ScopeType.Local, "local");
-DebuggerScript._scopeTypeNames.set(ScopeType.With, "with");
-DebuggerScript._scopeTypeNames.set(ScopeType.Closure, "closure");
-DebuggerScript._scopeTypeNames.set(ScopeType.Catch, "catch");
-DebuggerScript._scopeTypeNames.set(ScopeType.Block, "block");
-DebuggerScript._scopeTypeNames.set(ScopeType.Script, "script");
-
-/**
- * @param {function()} fun
- * @return {?Array<!Scope>}
- */
-DebuggerScript.getFunctionScopes = function(fun)
-{
-    var mirror = MakeMirror(fun);
-    if (!mirror.isFunction())
-        return null;
-    var functionMirror = /** @type {!FunctionMirror} */(mirror);
-    var count = functionMirror.scopeCount();
-    if (count == 0)
-        return null;
-    var result = [];
-    for (var i = 0; i < count; i++) {
-        var scopeDetails = functionMirror.scope(i).details();
-        var scopeObject = DebuggerScript._buildScopeObject(scopeDetails.type(), scopeDetails.object());
-        if (!scopeObject)
-            continue;
-        result.push({
-            type: /** @type {string} */(DebuggerScript._scopeTypeNames.get(scopeDetails.type())),
-            object: scopeObject,
-            name: scopeDetails.name() || ""
-        });
-    }
-    return result;
-}
-
-/**
- * @param {Object} object
- * @return {?RawLocation}
- */
-DebuggerScript.getGeneratorObjectLocation = function(object)
-{
-    var mirror = MakeMirror(object, true /* transient */);
-    if (!mirror.isGenerator())
-        return null;
-    var generatorMirror = /** @type {!GeneratorMirror} */(mirror);
-    var funcMirror = generatorMirror.func();
-    if (!funcMirror.resolved())
-        return null;
-    var location = generatorMirror.sourceLocation() || funcMirror.sourceLocation();
-    var script = funcMirror.script();
-    if (script && location) {
-        return {
-            scriptId: "" + script.id(),
-            lineNumber: location.line,
-            columnNumber: location.column
-        };
-    }
-    return null;
-}
-
-/**
- * @param {Object} object
- * @return {!Array<!{value: *}>|undefined}
- */
-DebuggerScript.getCollectionEntries = function(object)
-{
-    var mirror = MakeMirror(object, true /* transient */);
-    if (mirror.isMap())
-        return /** @type {!MapMirror} */(mirror).entries();
-    if (mirror.isSet() || mirror.isIterator()) {
-        var result = [];
-        var values = mirror.isSet() ? /** @type {!SetMirror} */(mirror).values() : /** @type {!IteratorMirror} */(mirror).preview();
-        for (var i = 0; i < values.length; ++i)
-            result.push({ value: values[i] });
-        return result;
-    }
-}
-
-/**
- * @param {string|undefined} contextData
- * @return {number}
- */
-DebuggerScript._executionContextId = function(contextData)
-{
-    if (!contextData)
-        return 0;
-    var match = contextData.match(/^[^,]*,([^,]*),.*$/);
-    if (!match)
-        return 0;
-    return parseInt(match[1], 10) || 0;
-}
-
-/**
- * @param {string|undefined} contextData
- * @return {string}
- */
-DebuggerScript._executionContextAuxData = function(contextData)
-{
-    if (!contextData)
-        return "";
-    var match = contextData.match(/^[^,]*,[^,]*,(.*)$/);
-    return match ? match[1] : "";
-}
-
-/**
- * @param {string} contextGroupId
- * @return {!Array<!FormattedScript>}
- */
-DebuggerScript.getScripts = function(contextGroupId)
-{
-    var result = [];
-    var scripts = Debug.scripts();
-    var contextDataPrefix = null;
-    if (contextGroupId)
-        contextDataPrefix = contextGroupId + ",";
-    for (var i = 0; i < scripts.length; ++i) {
-        var script = scripts[i];
-        if (contextDataPrefix) {
-            if (!script.context_data)
-                continue;
-            // Context data is a string in the following format:
-            // <contextGroupId>,<contextId>,<auxData>
-            if (script.context_data.indexOf(contextDataPrefix) !== 0)
-                continue;
-        }
-        if (script.is_debugger_script)
-            continue;
-        result.push(DebuggerScript._formatScript(script));
-    }
-    return result;
-}
-
-/**
- * @param {!Script} script
- * @return {!FormattedScript}
- */
-DebuggerScript._formatScript = function(script)
-{
-    var lineEnds = script.line_ends;
-    var lineCount = lineEnds.length;
-    var endLine = script.line_offset + lineCount - 1;
-    var endColumn;
-    // V8 will not count last line if script source ends with \n.
-    if (script.source[script.source.length - 1] === '\n') {
-        endLine += 1;
-        endColumn = 0;
-    } else {
-        if (lineCount === 1)
-            endColumn = script.source.length + script.column_offset;
-        else
-            endColumn = script.source.length - (lineEnds[lineCount - 2] + 1);
-    }
-    return {
-        id: script.id,
-        name: script.nameOrSourceURL(),
-        sourceURL: script.source_url,
-        sourceMappingURL: script.source_mapping_url,
-        source: script.source,
-        startLine: script.line_offset,
-        startColumn: script.column_offset,
-        endLine: endLine,
-        endColumn: endColumn,
-        executionContextId: DebuggerScript._executionContextId(script.context_data),
-        // Note that we cannot derive aux data from context id because of compilation cache.
-        executionContextAuxData: DebuggerScript._executionContextAuxData(script.context_data)
-    };
-}
-
-/**
- * @param {!ExecutionState} execState
- * @param {!BreakpointInfo} info
- * @return {string|undefined}
- */
-DebuggerScript.setBreakpoint = function(execState, info)
-{
-    var breakId = Debug.setScriptBreakPointById(info.sourceID, info.lineNumber, info.columnNumber, info.condition, undefined, Debug.BreakPositionAlignment.Statement);
-    var locations = Debug.findBreakPointActualLocations(breakId);
-    if (!locations.length)
-        return undefined;
-    info.lineNumber = locations[0].line;
-    info.columnNumber = locations[0].column;
-    return breakId.toString();
-}
-
-/**
- * @param {!ExecutionState} execState
- * @param {!{breakpointId: number}} info
- */
-DebuggerScript.removeBreakpoint = function(execState, info)
-{
-    Debug.findBreakPoint(info.breakpointId, true);
-}
-
-/**
- * @return {number}
- */
-DebuggerScript.pauseOnExceptionsState = function()
-{
-    return DebuggerScript._pauseOnExceptionsState;
-}
-
-/**
- * @param {number} newState
- */
-DebuggerScript.setPauseOnExceptionsState = function(newState)
-{
-    DebuggerScript._pauseOnExceptionsState = newState;
-
-    if (DebuggerScript.PauseOnExceptionsState.PauseOnAllExceptions === newState)
-        Debug.setBreakOnException();
-    else
-        Debug.clearBreakOnException();
-
-    if (DebuggerScript.PauseOnExceptionsState.PauseOnUncaughtExceptions === newState)
-        Debug.setBreakOnUncaughtException();
-    else
-        Debug.clearBreakOnUncaughtException();
-}
-
-/**
- * @param {!ExecutionState} execState
- * @param {number} limit
- * @return {!Array<!JavaScriptCallFrame>}
- */
-DebuggerScript.currentCallFrames = function(execState, limit)
-{
-    var frames = [];
-    for (var i = 0; i < execState.frameCount() && (!limit || i < limit); ++i)
-        frames.push(DebuggerScript._frameMirrorToJSCallFrame(execState.frame(i)));
-    return frames;
-}
-
-/**
- * @param {!ExecutionState} execState
- */
-DebuggerScript.stepIntoStatement = function(execState)
-{
-    execState.prepareStep(Debug.StepAction.StepIn);
-}
-
-/**
- * @param {!ExecutionState} execState
- */
-DebuggerScript.stepFrameStatement = function(execState)
-{
-    execState.prepareStep(Debug.StepAction.StepFrame);
-}
-
-/**
- * @param {!ExecutionState} execState
- */
-DebuggerScript.stepOverStatement = function(execState)
-{
-    execState.prepareStep(Debug.StepAction.StepNext);
-}
-
-/**
- * @param {!ExecutionState} execState
- */
-DebuggerScript.stepOutOfFunction = function(execState)
-{
-    execState.prepareStep(Debug.StepAction.StepOut);
-}
-
-DebuggerScript.clearStepping = function()
-{
-    Debug.clearStepping();
-}
-
-// Returns array in form:
-//      [ 0, <v8_result_report> ] in case of success
-//   or [ 1, <general_error_message>, <compiler_message>, <line_number>, <column_number> ] in case of compile error, numbers are 1-based.
-// or throws exception with message.
-/**
- * @param {number} scriptId
- * @param {string} newSource
- * @param {boolean} preview
- * @return {!Array<*>}
- */
-DebuggerScript.liveEditScriptSource = function(scriptId, newSource, preview)
-{
-    var scripts = Debug.scripts();
-    var scriptToEdit = null;
-    for (var i = 0; i < scripts.length; i++) {
-        if (scripts[i].id == scriptId) {
-            scriptToEdit = scripts[i];
-            break;
-        }
-    }
-    if (!scriptToEdit)
-        throw("Script not found");
-
-    var changeLog = [];
-    try {
-        var result = Debug.LiveEdit.SetScriptSource(scriptToEdit, newSource, preview, changeLog);
-        return [0, result.stack_modified];
-    } catch (e) {
-        if (e instanceof Debug.LiveEdit.Failure && "details" in e) {
-            var details = /** @type {!LiveEditErrorDetails} */(e.details);
-            if (details.type === "liveedit_compile_error") {
-                var startPosition = details.position.start;
-                return [1, String(e), String(details.syntaxErrorMessage), Number(startPosition.line), Number(startPosition.column)];
-            }
-        }
-        throw e;
-    }
-}
-
-/**
- * @param {!ExecutionState} execState
- */
-DebuggerScript.clearBreakpoints = function(execState)
-{
-    Debug.clearAllBreakPoints();
-}
-
-/**
- * @param {!ExecutionState} execState
- * @param {!{enabled: boolean}} info
- */
-DebuggerScript.setBreakpointsActivated = function(execState, info)
-{
-    Debug.debuggerFlags().breakPointsActive.setValue(info.enabled);
-}
-
-/**
- * @param {!BreakEvent} eventData
- */
-DebuggerScript.getBreakpointNumbers = function(eventData)
-{
-    var breakpoints = eventData.breakPointsHit();
-    var numbers = [];
-    if (!breakpoints)
-        return numbers;
-
-    for (var i = 0; i < breakpoints.length; i++) {
-        var breakpoint = breakpoints[i];
-        var scriptBreakPoint = breakpoint.script_break_point();
-        numbers.push(scriptBreakPoint ? scriptBreakPoint.number() : breakpoint.number());
-    }
-    return numbers;
-}
-
-// NOTE: This function is performance critical, as it can be run on every
-// statement that generates an async event (like addEventListener) to support
-// asynchronous call stacks. Thus, when possible, initialize the data lazily.
-/**
- * @param {!FrameMirror} frameMirror
- * @return {!JavaScriptCallFrame}
- */
-DebuggerScript._frameMirrorToJSCallFrame = function(frameMirror)
-{
-    // Stuff that can not be initialized lazily (i.e. valid while paused with a valid break_id).
-    // The frameMirror and scopeMirror can be accessed only while paused on the debugger.
-    var frameDetails = frameMirror.details();
-
-    var funcObject = frameDetails.func();
-    var sourcePosition = frameDetails.sourcePosition();
-    var thisObject = frameDetails.receiver();
-
-    var isAtReturn = !!frameDetails.isAtReturn();
-    var returnValue = isAtReturn ? frameDetails.returnValue() : undefined;
-
-    var scopeMirrors = frameMirror.allScopes(false);
-    /** @type {!Array<ScopeType>} */
-    var scopeTypes = new Array(scopeMirrors.length);
-    /** @type {?Array<!Object>} */
-    var scopeObjects = new Array(scopeMirrors.length);
-    /** @type {!Array<string|undefined>} */
-    var scopeNames = new Array(scopeMirrors.length);
-    /** @type {?Array<number>} */
-    var scopeStartPositions = new Array(scopeMirrors.length);
-    /** @type {?Array<number>} */
-    var scopeEndPositions = new Array(scopeMirrors.length);
-    /** @type {?Array<function()|null>} */
-    var scopeFunctions = new Array(scopeMirrors.length);
-    for (var i = 0; i < scopeMirrors.length; ++i) {
-        var scopeDetails = scopeMirrors[i].details();
-        scopeTypes[i] = scopeDetails.type();
-        scopeObjects[i] = scopeDetails.object();
-        scopeNames[i] = scopeDetails.name();
-        scopeStartPositions[i] = scopeDetails.startPosition ? scopeDetails.startPosition() : 0;
-        scopeEndPositions[i] = scopeDetails.endPosition ? scopeDetails.endPosition() : 0;
-        scopeFunctions[i] = scopeDetails.func ? scopeDetails.func() : null;
-    }
-
-    // Calculated lazily.
-    var scopeChain;
-    var funcMirror;
-    var location;
-    /** @type {!Array<?RawLocation>} */
-    var scopeStartLocations;
-    /** @type {!Array<?RawLocation>} */
-    var scopeEndLocations;
-    var details;
-
-    /**
-     * @param {!ScriptMirror|undefined} script
-     * @param {number} pos
-     * @return {?RawLocation}
-     */
-    function createLocation(script, pos)
-    {
-        if (!script)
-            return null;
-
-        var location = script.locationFromPosition(pos, true);
-        return {
-            "lineNumber": location.line,
-            "columnNumber": location.column,
-            "scriptId": String(script.id())
-        }
-    }
-
-    /**
-     * @return {!Array<!Object>}
-     */
-    function ensureScopeChain()
-    {
-        if (!scopeChain) {
-            scopeChain = [];
-            scopeStartLocations = [];
-            scopeEndLocations = [];
-            for (var i = 0, j = 0; i < scopeObjects.length; ++i) {
-                var scopeObject = DebuggerScript._buildScopeObject(scopeTypes[i], scopeObjects[i]);
-                if (scopeObject) {
-                    scopeTypes[j] = scopeTypes[i];
-                    scopeNames[j] = scopeNames[i];
-                    scopeChain[j] = scopeObject;
-
-                    var funcMirror = scopeFunctions ? MakeMirror(scopeFunctions[i]) : null;
-                    if (!funcMirror || !funcMirror.isFunction())
-                        funcMirror = new UnresolvedFunctionMirror(funcObject);
-
-                    var script = /** @type {!FunctionMirror} */(funcMirror).script();
-                    scopeStartLocations[j] = createLocation(script, scopeStartPositions[i]);
-                    scopeEndLocations[j] = createLocation(script, scopeEndPositions[i]);
-                    ++j;
-                }
-            }
-            scopeTypes.length = scopeChain.length;
-            scopeNames.length = scopeChain.length;
-            scopeObjects = null; // Free for GC.
-            scopeFunctions = null;
-            scopeStartPositions = null;
-            scopeEndPositions = null;
-        }
-        return scopeChain;
-    }
-
-    /**
-     * @return {!JavaScriptCallFrameDetails}
-     */
-    function lazyDetails()
-    {
-        if (!details) {
-            var scopeObjects = ensureScopeChain();
-            var script = ensureFuncMirror().script();
-            /** @type {!Array<Scope>} */
-            var scopes = [];
-            for (var i = 0; i < scopeObjects.length; ++i) {
-                var scope = {
-                    "type": /** @type {string} */(DebuggerScript._scopeTypeNames.get(scopeTypes[i])),
-                    "object": scopeObjects[i],
-                };
-                if (scopeNames[i])
-                    scope.name = scopeNames[i];
-                if (scopeStartLocations[i])
-                    scope.startLocation = /** @type {!RawLocation} */(scopeStartLocations[i]);
-                if (scopeEndLocations[i])
-                    scope.endLocation = /** @type {!RawLocation} */(scopeEndLocations[i]);
-                scopes.push(scope);
-            }
-            details = {
-                "functionName": ensureFuncMirror().debugName(),
-                "location": {
-                    "lineNumber": line(),
-                    "columnNumber": column(),
-                    "scriptId": String(script.id())
-                },
-                "this": thisObject,
-                "scopeChain": scopes
-            };
-            var functionLocation = ensureFuncMirror().sourceLocation();
-            if (functionLocation) {
-                details.functionLocation = {
-                    "lineNumber": functionLocation.line,
-                    "columnNumber": functionLocation.column,
-                    "scriptId": String(script.id())
-                };
-            }
-            if (isAtReturn)
-                details.returnValue = returnValue;
-        }
-        return details;
-    }
-
-    /**
-     * @return {!FunctionMirror}
-     */
-    function ensureFuncMirror()
-    {
-        if (!funcMirror) {
-            funcMirror = MakeMirror(funcObject);
-            if (!funcMirror.isFunction())
-                funcMirror = new UnresolvedFunctionMirror(funcObject);
-        }
-        return /** @type {!FunctionMirror} */(funcMirror);
-    }
-
-    /**
-     * @return {!{line: number, column: number}}
-     */
-    function ensureLocation()
-    {
-        if (!location) {
-            var script = ensureFuncMirror().script();
-            if (script)
-                location = script.locationFromPosition(sourcePosition, true);
-            if (!location)
-                location = { line: 0, column: 0 };
-        }
-        return location;
-    }
-
-    /**
-     * @return {number}
-     */
-    function line()
-    {
-        return ensureLocation().line;
-    }
-
-    /**
-     * @return {number}
-     */
-    function column()
-    {
-        return ensureLocation().column;
-    }
-
-    /**
-     * @return {number}
-     */
-    function contextId()
-    {
-        var mirror = ensureFuncMirror();
-        // Old V8 do not have context() function on these objects
-        if (!mirror.context)
-            return DebuggerScript._executionContextId(mirror.script().value().context_data);
-        var context = mirror.context();
-        if (context)
-            return DebuggerScript._executionContextId(context.data());
-        return 0;
-    }
-
-    /**
-     * @return {number|undefined}
-     */
-    function sourceID()
-    {
-        var script = ensureFuncMirror().script();
-        return script && script.id();
-    }
-
-    /**
-     * @param {string} expression
-     * @return {*}
-     */
-    function evaluate(expression)
-    {
-        return frameMirror.evaluate(expression, false).value();
-    }
-
-    /** @return {undefined} */
-    function restart()
-    {
-        return frameMirror.restart();
-    }
-
-    /**
-     * @param {number} scopeNumber
-     * @param {string} variableName
-     * @param {*} newValue
-     */
-    function setVariableValue(scopeNumber, variableName, newValue)
-    {
-        var scopeMirror = frameMirror.scope(scopeNumber);
-        if (!scopeMirror)
-            throw new Error("Incorrect scope index");
-        scopeMirror.setVariableValue(variableName, newValue);
-    }
-
-    return {
-        "sourceID": sourceID,
-        "line": line,
-        "column": column,
-        "contextId": contextId,
-        "thisObject": thisObject,
-        "evaluate": evaluate,
-        "restart": restart,
-        "setVariableValue": setVariableValue,
-        "isAtReturn": isAtReturn,
-        "details": lazyDetails
-    };
-}
-
-/**
- * @param {number} scopeType
- * @param {!Object} scopeObject
- * @return {!Object|undefined}
- */
-DebuggerScript._buildScopeObject = function(scopeType, scopeObject)
-{
-    var result;
-    switch (scopeType) {
-    case ScopeType.Local:
-    case ScopeType.Closure:
-    case ScopeType.Catch:
-    case ScopeType.Block:
-    case ScopeType.Script:
-        // For transient objects we create a "persistent" copy that contains
-        // the same properties.
-        // Reset scope object prototype to null so that the proto properties
-        // don't appear in the local scope section.
-        var properties = /** @type {!ObjectMirror} */(MakeMirror(scopeObject, true /* transient */)).properties();
-        // Almost always Script scope will be empty, so just filter out that noise.
-        // Also drop empty Block scopes, should we get any.
-        if (!properties.length && (scopeType === ScopeType.Script || scopeType === ScopeType.Block))
-            break;
-        result = { __proto__: null };
-        for (var j = 0; j < properties.length; j++) {
-            var name = properties[j].name();
-            if (name.length === 0 || name.charAt(0) === ".")
-                continue; // Skip internal variables like ".arguments" and variables with empty name
-            result[name] = properties[j].value_;
-        }
-        break;
-    case ScopeType.Global:
-    case ScopeType.With:
-        result = scopeObject;
-        break;
-    }
-    return result;
-}
-
-// We never resolve Mirror by its handle so to avoid memory leaks caused by Mirrors in the cache we disable it.
-ToggleMirrorCache(false);
-
-return DebuggerScript;
-})();