diff options
Diffstat (limited to 'deps/v8/src/debug/debug.js')
| -rw-r--r-- | deps/v8/src/debug/debug.js | 633 |
1 files changed, 0 insertions, 633 deletions
diff --git a/deps/v8/src/debug/debug.js b/deps/v8/src/debug/debug.js index 43be3c424a..97a0886ca7 100644 --- a/deps/v8/src/debug/debug.js +++ b/deps/v8/src/debug/debug.js @@ -19,16 +19,8 @@ var ValueMirror = global.ValueMirror; //---------------------------------------------------------------------------- -// Default number of frames to include in the response to backtrace request. -var kDefaultBacktraceLength = 10; - var Debug = {}; -// Regular expression to skip "crud" at the beginning of a source line which is -// not really code. Currently the regular expression matches whitespace and -// comments. -var sourceLineBeginningSkip = /^(?:\s*(?:\/\*.*?\*\/)*)*/; - // Debug events which can occur in the V8 JavaScript engine. These originate // from the API include file debug.h. Debug.DebugEvent = { Break: 1, @@ -58,29 +50,12 @@ Debug.ScriptCompilationType = { Host: 0, Eval: 1, JSON: 2 }; -// The different script break point types. -Debug.ScriptBreakPointType = { ScriptId: 0, - ScriptName: 1, - ScriptRegExp: 2 }; - function ScriptTypeFlag(type) { return (1 << type); } // Globals. -var next_response_seq = 0; -var next_break_point_number = 1; -var break_points = []; -var script_break_points = []; var debugger_flags = { - breakPointsActive: { - value: true, - getValue: function() { return this.value; }, - setValue: function(value) { - this.value = !!value; - %SetBreakPointsActive(this.value); - } - }, breakOnCaughtException: { getValue: function() { return Debug.isBreakOnException(); }, setValue: function(value) { @@ -104,308 +79,6 @@ var debugger_flags = { }; -// Create a new break point object and add it to the list of break points. -function MakeBreakPoint(source_position, opt_script_break_point) { - var break_point = new BreakPoint(source_position, opt_script_break_point); - break_points.push(break_point); - return break_point; -} - - -// Object representing a break point. -// NOTE: This object does not have a reference to the function having break -// point as this would cause function not to be garbage collected when it is -// not used any more. We do not want break points to keep functions alive. -function BreakPoint(source_position, opt_script_break_point) { - this.source_position_ = source_position; - if (opt_script_break_point) { - this.script_break_point_ = opt_script_break_point; - } else { - this.number_ = next_break_point_number++; - } - this.active_ = true; - this.condition_ = null; -} - - -BreakPoint.prototype.number = function() { - return this.number_; -}; - - -BreakPoint.prototype.func = function() { - return this.func_; -}; - - -BreakPoint.prototype.source_position = function() { - return this.source_position_; -}; - - -BreakPoint.prototype.active = function() { - if (this.script_break_point()) { - return this.script_break_point().active(); - } - return this.active_; -}; - - -BreakPoint.prototype.condition = function() { - if (this.script_break_point() && this.script_break_point().condition()) { - return this.script_break_point().condition(); - } - return this.condition_; -}; - - -BreakPoint.prototype.script_break_point = function() { - return this.script_break_point_; -}; - - -BreakPoint.prototype.enable = function() { - this.active_ = true; -}; - - -BreakPoint.prototype.disable = function() { - this.active_ = false; -}; - - -BreakPoint.prototype.setCondition = function(condition) { - this.condition_ = condition; -}; - - -BreakPoint.prototype.isTriggered = function(exec_state) { - // Break point not active - not triggered. - if (!this.active()) return false; - - // Check for conditional break point. - if (this.condition()) { - // If break point has condition try to evaluate it in the top frame. - try { - var mirror = exec_state.frame(0).evaluate(this.condition()); - // If no sensible mirror or non true value break point not triggered. - if (!(mirror instanceof ValueMirror) || !mirror.value_) { - return false; - } - } catch (e) { - // Exception evaluating condition counts as not triggered. - return false; - } - } - - // Break point triggered. - return true; -}; - - -// Function called from the runtime when a break point is hit. Returns true if -// the break point is triggered and supposed to break execution. -function IsBreakPointTriggered(break_id, break_point) { - return break_point.isTriggered(MakeExecutionState(break_id)); -} - - -// Object representing a script break point. The script is referenced by its -// script name or script id and the break point is represented as line and -// column. -function ScriptBreakPoint(type, script_id_or_name, opt_line, opt_column, - opt_groupId) { - this.type_ = type; - if (type == Debug.ScriptBreakPointType.ScriptId) { - this.script_id_ = script_id_or_name; - } else if (type == Debug.ScriptBreakPointType.ScriptName) { - this.script_name_ = script_id_or_name; - } else if (type == Debug.ScriptBreakPointType.ScriptRegExp) { - this.script_regexp_object_ = new GlobalRegExp(script_id_or_name); - } else { - throw %make_error(kDebugger, "Unexpected breakpoint type " + type); - } - this.line_ = opt_line || 0; - this.column_ = opt_column; - this.groupId_ = opt_groupId; - this.active_ = true; - this.condition_ = null; - this.break_points_ = []; -} - - -ScriptBreakPoint.prototype.number = function() { - return this.number_; -}; - - -ScriptBreakPoint.prototype.groupId = function() { - return this.groupId_; -}; - - -ScriptBreakPoint.prototype.type = function() { - return this.type_; -}; - - -ScriptBreakPoint.prototype.script_id = function() { - return this.script_id_; -}; - - -ScriptBreakPoint.prototype.script_name = function() { - return this.script_name_; -}; - - -ScriptBreakPoint.prototype.script_regexp_object = function() { - return this.script_regexp_object_; -}; - - -ScriptBreakPoint.prototype.line = function() { - return this.line_; -}; - - -ScriptBreakPoint.prototype.column = function() { - return this.column_; -}; - - -ScriptBreakPoint.prototype.actual_locations = function() { - var locations = []; - for (var i = 0; i < this.break_points_.length; i++) { - locations.push(this.break_points_[i].actual_location); - } - return locations; -}; - - -ScriptBreakPoint.prototype.update_positions = function(line, column) { - this.line_ = line; - this.column_ = column; -}; - - -ScriptBreakPoint.prototype.active = function() { - return this.active_; -}; - - -ScriptBreakPoint.prototype.condition = function() { - return this.condition_; -}; - - -ScriptBreakPoint.prototype.enable = function() { - this.active_ = true; -}; - - -ScriptBreakPoint.prototype.disable = function() { - this.active_ = false; -}; - - -ScriptBreakPoint.prototype.setCondition = function(condition) { - this.condition_ = condition; -}; - - -// Check whether a script matches this script break point. Currently this is -// only based on script name. -ScriptBreakPoint.prototype.matchesScript = function(script) { - if (this.type_ == Debug.ScriptBreakPointType.ScriptId) { - return this.script_id_ == script.id; - } else { - // We might want to account columns here as well. - if (!(script.line_offset <= this.line_ && - this.line_ < script.line_offset + %ScriptLineCount(script))) { - return false; - } - if (this.type_ == Debug.ScriptBreakPointType.ScriptName) { - return this.script_name_ == script.nameOrSourceURL(); - } else if (this.type_ == Debug.ScriptBreakPointType.ScriptRegExp) { - return this.script_regexp_object_.test(script.nameOrSourceURL()); - } else { - throw %make_error(kDebugger, "Unexpected breakpoint type " + this.type_); - } - } -}; - - -// Set the script break point in a script. -ScriptBreakPoint.prototype.set = function (script) { - var column = this.column(); - var line = this.line(); - // If the column is undefined the break is on the line. To help locate the - // first piece of breakable code on the line try to find the column on the - // line which contains some source. - if (IS_UNDEFINED(column)) { - var source_line = %ScriptSourceLine(script, line || script.line_offset); - - // Allocate array for caching the columns where the actual source starts. - if (!script.sourceColumnStart_) { - script.sourceColumnStart_ = new GlobalArray(%ScriptLineCount(script)); - } - - // Fill cache if needed and get column where the actual source starts. - if (IS_UNDEFINED(script.sourceColumnStart_[line])) { - script.sourceColumnStart_[line] = - source_line.match(sourceLineBeginningSkip)[0].length; - } - column = script.sourceColumnStart_[line]; - } - - // Convert the line and column into an absolute position within the script. - var position = Debug.findScriptSourcePosition(script, this.line(), column); - - // If the position is not found in the script (the script might be shorter - // than it used to be) just ignore it. - if (IS_NULL(position)) return; - - // Create a break point object and set the break point. - var break_point = MakeBreakPoint(position, this); - var actual_position = %SetScriptBreakPoint(script, position, - break_point); - if (IS_UNDEFINED(actual_position)) { - actual_position = position; - } - var actual_location = script.locationFromPosition(actual_position, true); - break_point.actual_location = { line: actual_location.line, - column: actual_location.column, - script_id: script.id }; - this.break_points_.push(break_point); - return break_point; -}; - - -// Clear all the break points created from this script break point -ScriptBreakPoint.prototype.clear = function () { - var remaining_break_points = []; - for (var i = 0; i < break_points.length; i++) { - if (break_points[i].script_break_point() && - break_points[i].script_break_point() === this) { - %ClearBreakPoint(break_points[i]); - } else { - remaining_break_points.push(break_points[i]); - } - } - break_points = remaining_break_points; - this.break_points_ = []; -}; - - -Debug.setListener = function(listener, opt_data) { - if (!IS_FUNCTION(listener) && !IS_UNDEFINED(listener) && !IS_NULL(listener)) { - throw %make_type_error(kDebuggerType); - } - %SetDebugEventListener(listener, opt_data); -}; - - // Returns a Script object. If the parameter is a function the return value // is the script in which the function is defined. If the parameter is a string // the return value is the script for which the script name has that string @@ -475,246 +148,6 @@ Debug.findScriptSourcePosition = function(script, opt_line, opt_column) { return location ? location.position : null; }; - -Debug.findBreakPoint = function(break_point_number, remove) { - var break_point; - for (var i = 0; i < break_points.length; i++) { - if (break_points[i].number() == break_point_number) { - break_point = break_points[i]; - // Remove the break point from the list if requested. - if (remove) { - break_points.splice(i, 1); - } - break; - } - } - if (break_point) { - return break_point; - } else { - return this.findScriptBreakPoint(break_point_number, remove); - } -}; - -Debug.findBreakPointActualLocations = function(break_point_number) { - for (var i = 0; i < script_break_points.length; i++) { - if (script_break_points[i].number() == break_point_number) { - return script_break_points[i].actual_locations(); - } - } - for (var i = 0; i < break_points.length; i++) { - if (break_points[i].number() == break_point_number) { - return [break_points[i].actual_location]; - } - } - return []; -}; - -Debug.setBreakPoint = function(func, opt_line, opt_column, opt_condition) { - if (!IS_FUNCTION(func)) throw %make_type_error(kDebuggerType); - // Break points in API functions are not supported. - if (%FunctionIsAPIFunction(func)) { - throw %make_error(kDebugger, 'Cannot set break point in native code.'); - } - // Find source position. - var source_position = - this.findFunctionSourceLocation(func, opt_line, opt_column).position; - // Find the script for the function. - var script = %FunctionGetScript(func); - // Break in builtin JavaScript code is not supported. - if (script.type == Debug.ScriptType.Native) { - throw %make_error(kDebugger, 'Cannot set break point in native code.'); - } - // If the script for the function has a name convert this to a script break - // point. - if (script && script.id) { - // Find line and column for the position in the script and set a script - // break point from that. - var location = script.locationFromPosition(source_position, false); - return this.setScriptBreakPointById(script.id, - location.line, location.column, - opt_condition); - } else { - // Set a break point directly on the function. - var break_point = MakeBreakPoint(source_position); - var actual_position = - %SetFunctionBreakPoint(func, source_position, break_point); - var actual_location = script.locationFromPosition(actual_position, true); - break_point.actual_location = { line: actual_location.line, - column: actual_location.column, - script_id: script.id }; - break_point.setCondition(opt_condition); - return break_point.number(); - } -}; - - -Debug.setBreakPointByScriptIdAndPosition = function(script_id, position, - condition, enabled) -{ - var break_point = MakeBreakPoint(position); - break_point.setCondition(condition); - if (!enabled) { - break_point.disable(); - } - var script = scriptById(script_id); - if (script) { - break_point.actual_position = %SetScriptBreakPoint(script, position, break_point); - } - return break_point; -}; - - -Debug.enableBreakPoint = function(break_point_number) { - var break_point = this.findBreakPoint(break_point_number, false); - // Only enable if the breakpoint hasn't been deleted: - if (break_point) { - break_point.enable(); - } -}; - - -Debug.disableBreakPoint = function(break_point_number) { - var break_point = this.findBreakPoint(break_point_number, false); - // Only enable if the breakpoint hasn't been deleted: - if (break_point) { - break_point.disable(); - } -}; - - -Debug.changeBreakPointCondition = function(break_point_number, condition) { - var break_point = this.findBreakPoint(break_point_number, false); - break_point.setCondition(condition); -}; - - -Debug.clearBreakPoint = function(break_point_number) { - var break_point = this.findBreakPoint(break_point_number, true); - if (break_point) { - return %ClearBreakPoint(break_point); - } else { - break_point = this.findScriptBreakPoint(break_point_number, true); - if (!break_point) throw %make_error(kDebugger, 'Invalid breakpoint'); - } -}; - - -Debug.clearAllBreakPoints = function() { - for (var i = 0; i < break_points.length; i++) { - var break_point = break_points[i]; - %ClearBreakPoint(break_point); - } - break_points = []; -}; - - -Debug.disableAllBreakPoints = function() { - // Disable all user defined breakpoints: - for (var i = 1; i < next_break_point_number; i++) { - Debug.disableBreakPoint(i); - } - // Disable all exception breakpoints: - %ChangeBreakOnException(Debug.ExceptionBreak.Caught, false); - %ChangeBreakOnException(Debug.ExceptionBreak.Uncaught, false); -}; - - -Debug.findScriptBreakPoint = function(break_point_number, remove) { - var script_break_point; - for (var i = 0; i < script_break_points.length; i++) { - if (script_break_points[i].number() == break_point_number) { - script_break_point = script_break_points[i]; - // Remove the break point from the list if requested. - if (remove) { - script_break_point.clear(); - script_break_points.splice(i,1); - } - break; - } - } - return script_break_point; -}; - - -// Sets a breakpoint in a script identified through id or name at the -// specified source line and column within that line. -Debug.setScriptBreakPoint = function(type, script_id_or_name, - opt_line, opt_column, opt_condition, - opt_groupId) { - // Create script break point object. - var script_break_point = - new ScriptBreakPoint(type, script_id_or_name, opt_line, opt_column, - opt_groupId); - - // Assign number to the new script break point and add it. - script_break_point.number_ = next_break_point_number++; - script_break_point.setCondition(opt_condition); - script_break_points.push(script_break_point); - - // Run through all scripts to see if this script break point matches any - // loaded scripts. - var scripts = this.scripts(); - for (var i = 0; i < scripts.length; i++) { - if (script_break_point.matchesScript(scripts[i])) { - script_break_point.set(scripts[i]); - } - } - - return script_break_point.number(); -}; - - -Debug.setScriptBreakPointById = function(script_id, - opt_line, opt_column, - opt_condition, opt_groupId) { - return this.setScriptBreakPoint(Debug.ScriptBreakPointType.ScriptId, - script_id, opt_line, opt_column, - opt_condition, opt_groupId); -}; - - -Debug.setScriptBreakPointByName = function(script_name, - opt_line, opt_column, - opt_condition, opt_groupId) { - return this.setScriptBreakPoint(Debug.ScriptBreakPointType.ScriptName, - script_name, opt_line, opt_column, - opt_condition, opt_groupId); -}; - - -Debug.setScriptBreakPointByRegExp = function(script_regexp, - opt_line, opt_column, - opt_condition, opt_groupId) { - return this.setScriptBreakPoint(Debug.ScriptBreakPointType.ScriptRegExp, - script_regexp, opt_line, opt_column, - opt_condition, opt_groupId); -}; - - -Debug.enableScriptBreakPoint = function(break_point_number) { - var script_break_point = this.findScriptBreakPoint(break_point_number, false); - script_break_point.enable(); -}; - - -Debug.disableScriptBreakPoint = function(break_point_number) { - var script_break_point = this.findScriptBreakPoint(break_point_number, false); - script_break_point.disable(); -}; - - -Debug.changeScriptBreakPointCondition = function( - break_point_number, condition) { - var script_break_point = this.findScriptBreakPoint(break_point_number, false); - script_break_point.setCondition(condition); -}; - - -Debug.scriptBreakPoints = function() { - return script_break_points; -}; - - Debug.clearStepping = function() { %ClearStepping(); }; @@ -743,28 +176,6 @@ Debug.isBreakOnUncaughtException = function() { return !!%IsBreakOnException(Debug.ExceptionBreak.Uncaught); }; -Debug.showBreakPoints = function(f, full) { - if (!IS_FUNCTION(f)) throw %make_error(kDebuggerType); - var source = full ? this.scriptSource(f) : this.source(f); - var offset = full ? 0 : this.sourcePosition(f); - var locations = %GetBreakLocations(f); - if (!locations) return source; - locations.sort(function(x, y) { return x - y; }); - var result = ""; - var prev_pos = 0; - var pos; - for (var i = 0; i < locations.length; i++) { - pos = locations[i] - offset; - result += source.slice(prev_pos, pos); - result += "[B" + i + "]"; - prev_pos = pos; - } - pos = source.length; - result += source.substring(prev_pos, pos); - return result; -}; - - // Get all the scripts currently loaded. Locating all the scripts is based on // scanning the heap. Debug.scripts = function() { @@ -837,46 +248,6 @@ ExecutionState.prototype.selectedFrame = function() { return this.selected_frame; }; -function MakeBreakEvent(break_id, break_points_hit) { - return new BreakEvent(break_id, break_points_hit); -} - - -function BreakEvent(break_id, break_points_hit) { - this.frame_ = new FrameMirror(break_id, 0); - this.break_points_hit_ = break_points_hit; -} - - -BreakEvent.prototype.eventType = function() { - return Debug.DebugEvent.Break; -}; - - -BreakEvent.prototype.func = function() { - return this.frame_.func(); -}; - - -BreakEvent.prototype.sourceLine = function() { - return this.frame_.sourceLine(); -}; - - -BreakEvent.prototype.sourceColumn = function() { - return this.frame_.sourceColumn(); -}; - - -BreakEvent.prototype.sourceLineText = function() { - return this.frame_.sourceLineText(); -}; - - -BreakEvent.prototype.breakPointsHit = function() { - return this.break_points_hit_; -}; - function MakeExceptionEvent(break_id, exception, uncaught, promise) { return new ExceptionEvent(break_id, exception, uncaught, promise); @@ -994,19 +365,15 @@ AsyncTaskEvent.prototype.id = function() { utils.InstallConstants(global, [ "Debug", Debug, - "BreakEvent", BreakEvent, "CompileEvent", CompileEvent, - "BreakPoint", BreakPoint, ]); // Functions needed by the debugger runtime. utils.InstallConstants(utils, [ "MakeExecutionState", MakeExecutionState, "MakeExceptionEvent", MakeExceptionEvent, - "MakeBreakEvent", MakeBreakEvent, "MakeCompileEvent", MakeCompileEvent, "MakeAsyncTaskEvent", MakeAsyncTaskEvent, - "IsBreakPointTriggered", IsBreakPointTriggered, ]); }) |