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1 /* |
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2 * Copyright (C) 2010 Google Inc. All rights reserved. |
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3 * |
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4 * Redistribution and use in source and binary forms, with or without |
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5 * modification, are permitted provided that the following conditions are |
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6 * met: |
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7 * |
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8 * * Redistributions of source code must retain the above copyright |
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9 * notice, this list of conditions and the following disclaimer. |
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10 * * Redistributions in binary form must reproduce the above |
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11 * copyright notice, this list of conditions and the following disclaimer |
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12 * in the documentation and/or other materials provided with the |
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13 * distribution. |
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14 * * Neither the name of Google Inc. nor the names of its |
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15 * contributors may be used to endorse or promote products derived from |
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16 * this software without specific prior written permission. |
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17 * |
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18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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29 */ |
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30 |
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31 (function () { |
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32 |
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33 var DebuggerScript = {}; |
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34 DebuggerScript._breakpoints = {}; |
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35 |
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36 DebuggerScript.PauseOnExceptionsState = { |
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37 DontPauseOnExceptions : 0, |
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38 PauseOnAllExceptions : 1, |
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39 PauseOnUncaughtExceptions: 2 |
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40 }; |
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41 |
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42 DebuggerScript.ScriptWorldType = { |
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43 MainWorld : 0, |
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44 ExtensionsWorld : 1 |
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45 }; |
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46 |
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47 DebuggerScript._pauseOnExceptionsState = DebuggerScript.PauseOnExceptionsState.DontPauseOnExceptions; |
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48 Debug.clearBreakOnException(); |
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49 Debug.clearBreakOnUncaughtException(); |
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50 |
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51 DebuggerScript.getAfterCompileScript = function(eventData) |
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52 { |
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53 return DebuggerScript._formatScript(eventData.script_.script_); |
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54 } |
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55 |
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56 DebuggerScript.getScripts = function(contextData) |
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57 { |
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58 var result = []; |
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59 |
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60 if (!contextData) |
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61 return result; |
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62 var comma = contextData.indexOf(","); |
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63 if (comma === -1) |
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64 return result; |
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65 // Context data is a string in the following format: |
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66 // ("page"|"injected")","<page id> |
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67 var idSuffix = contextData.substring(comma); // including the comma |
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68 |
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69 var scripts = Debug.scripts(); |
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70 for (var i = 0; i < scripts.length; ++i) { |
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71 var script = scripts[i]; |
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72 if (script.context_data && script.context_data.lastIndexOf(idSuffix) != -1) |
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73 result.push(DebuggerScript._formatScript(script)); |
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74 } |
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75 return result; |
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76 } |
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77 |
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78 DebuggerScript._formatScript = function(script) |
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79 { |
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80 var scriptWorldType = DebuggerScript.ScriptWorldType.MainWorld; |
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81 if (script.context_data && script.context_data.indexOf("injected") == 0) |
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82 scriptWorldType = DebuggerScript.ScriptWorldType.ExtensionsWorld; |
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83 return { |
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84 id: script.id, |
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85 name: script.name, |
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86 source: script.source, |
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87 lineOffset: DebuggerScript._v8ToWebkitLineNumber(script.line_offset), |
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88 lineCount: script.lineCount(), |
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89 scriptWorldType: scriptWorldType |
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90 }; |
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91 } |
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92 |
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93 DebuggerScript.setBreakpoint = function(execState, args) |
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94 { |
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95 args.lineNumber = DebuggerScript._webkitToV8LineNumber(args.lineNumber); |
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96 var breakId = Debug.setScriptBreakPointById(args.scriptId, args.lineNumber, 0 /* column */, args.condition); |
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97 if (!args.enabled) |
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98 Debug.disableScriptBreakPoint(breakId); |
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99 |
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100 var locations = Debug.findBreakPointActualLocations(breakId); |
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101 var actualLineNumber = locations.length ? locations[0].line : args.lineNumber; |
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102 |
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103 var key = args.scriptId + ":" + actualLineNumber; |
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104 if (key in DebuggerScript._breakpoints) { |
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105 // Remove old breakpoint. |
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106 Debug.findBreakPoint(DebuggerScript._breakpoints[key], true); |
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107 } |
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108 DebuggerScript._breakpoints[key] = breakId; |
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109 return DebuggerScript._v8ToWebkitLineNumber(actualLineNumber); |
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110 } |
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111 |
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112 DebuggerScript.removeBreakpoint = function(execState, args) |
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113 { |
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114 args.lineNumber = DebuggerScript._webkitToV8LineNumber(args.lineNumber); |
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115 var key = args.scriptId + ":" + args.lineNumber; |
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116 var breakId = DebuggerScript._breakpoints[key]; |
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117 if (breakId) |
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118 Debug.findBreakPoint(breakId, true); |
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119 delete DebuggerScript._breakpoints[key]; |
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120 } |
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121 |
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122 DebuggerScript.pauseOnExceptionsState = function() |
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123 { |
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124 return DebuggerScript._pauseOnExceptionsState; |
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125 } |
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126 |
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127 DebuggerScript.setPauseOnExceptionsState = function(newState) |
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128 { |
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129 DebuggerScript._pauseOnExceptionsState = newState; |
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130 |
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131 if (DebuggerScript.PauseOnExceptionsState.PauseOnAllExceptions === newState) |
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132 Debug.setBreakOnException(); |
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133 else |
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134 Debug.clearBreakOnException(); |
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135 |
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136 if (DebuggerScript.PauseOnExceptionsState.PauseOnUncaughtExceptions === newState) |
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137 Debug.setBreakOnUncaughtException(); |
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138 else |
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139 Debug.clearBreakOnUncaughtException(); |
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140 } |
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141 |
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142 DebuggerScript.currentCallFrame = function(execState, args) |
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143 { |
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144 var frameCount = execState.frameCount(); |
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145 if (frameCount === 0) |
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146 return undefined; |
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147 |
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148 var topFrame; |
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149 for (var i = frameCount - 1; i >= 0; i--) { |
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150 var frameMirror = execState.frame(i); |
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151 topFrame = DebuggerScript._frameMirrorToJSCallFrame(frameMirror, topFrame); |
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152 } |
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153 return topFrame; |
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154 } |
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155 |
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156 DebuggerScript.stepIntoStatement = function(execState) |
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157 { |
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158 execState.prepareStep(Debug.StepAction.StepIn, 1); |
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159 } |
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160 |
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161 DebuggerScript.stepOverStatement = function(execState) |
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162 { |
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163 execState.prepareStep(Debug.StepAction.StepNext, 1); |
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164 } |
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165 |
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166 DebuggerScript.stepOutOfFunction = function(execState) |
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167 { |
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168 execState.prepareStep(Debug.StepAction.StepOut, 1); |
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169 } |
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170 |
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171 DebuggerScript.editScriptSource = function(scriptId, newSource) |
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172 { |
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173 var scripts = Debug.scripts(); |
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174 var scriptToEdit = null; |
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175 for (var i = 0; i < scripts.length; i++) { |
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176 if (scripts[i].id == scriptId) { |
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177 scriptToEdit = scripts[i]; |
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178 break; |
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179 } |
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180 } |
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181 if (!scriptToEdit) |
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182 throw("Script not found"); |
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183 |
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184 var changeLog = []; |
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185 Debug.LiveEdit.SetScriptSource(scriptToEdit, newSource, false, changeLog); |
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186 return scriptToEdit.source; |
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187 } |
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188 |
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189 DebuggerScript.clearBreakpoints = function(execState, args) |
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190 { |
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191 for (var key in DebuggerScript._breakpoints) { |
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192 var breakId = DebuggerScript._breakpoints[key]; |
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193 Debug.findBreakPoint(breakId, true); |
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194 } |
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195 DebuggerScript._breakpoints = {}; |
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196 } |
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197 |
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198 DebuggerScript.setBreakpointsActivated = function(execState, args) |
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199 { |
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200 for (var key in DebuggerScript._breakpoints) { |
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201 var breakId = DebuggerScript._breakpoints[key]; |
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202 if (args.enabled) |
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203 Debug.enableScriptBreakPoint(breakId); |
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204 else |
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205 Debug.disableScriptBreakPoint(breakId); |
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206 } |
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207 } |
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208 |
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209 DebuggerScript._frameMirrorToJSCallFrame = function(frameMirror, callerFrame) |
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210 { |
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211 // Get function name. |
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212 var func; |
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213 try { |
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214 func = frameMirror.func(); |
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215 } catch(e) { |
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216 } |
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217 var functionName; |
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218 if (func) |
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219 functionName = func.name() || func.inferredName(); |
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220 |
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221 // Get script ID. |
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222 var script = func.script(); |
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223 var sourceID = script && script.id(); |
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224 |
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225 // Get line number. |
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226 var line = DebuggerScript._v8ToWebkitLineNumber(frameMirror.sourceLine()); |
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227 |
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228 // Get this object. |
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229 var thisObject = frameMirror.details_.receiver(); |
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230 |
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231 // Get scope chain array in format: [<scope type>, <scope object>, <scope type>, <scope object>,...] |
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232 var scopeChain = []; |
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233 var scopeType = []; |
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234 for (var i = 0; i < frameMirror.scopeCount(); i++) { |
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235 var scopeMirror = frameMirror.scope(i); |
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236 var scopeObjectMirror = scopeMirror.scopeObject(); |
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237 var properties = scopeObjectMirror.properties(); |
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238 var scopeObject = {}; |
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239 for (var j = 0; j < properties.length; j++) |
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240 scopeObject[properties[j].name()] = properties[j].value_; |
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241 // Reset scope object prototype to null so that the proto properties |
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242 // don't appear in th local scope section. |
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243 scopeObject.__proto__ = null; |
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244 scopeType.push(scopeMirror.scopeType()); |
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245 scopeChain.push(scopeObject); |
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246 } |
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247 |
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248 function evaluate(expression) { |
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249 return frameMirror.evaluate(expression, false).value(); |
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250 } |
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251 |
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252 return { |
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253 "sourceID": sourceID, |
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254 "line": line, |
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255 "functionName": functionName, |
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256 "type": "function", |
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257 "thisObject": thisObject, |
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258 "scopeChain": scopeChain, |
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259 "scopeType": scopeType, |
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260 "evaluate": evaluate, |
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261 "caller": callerFrame |
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262 }; |
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263 } |
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264 |
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265 DebuggerScript._webkitToV8LineNumber = function(line) |
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266 { |
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267 return line - 1; |
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268 }; |
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269 |
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270 DebuggerScript._v8ToWebkitLineNumber = function(line) |
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271 { |
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272 return line + 1; |
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273 }; |
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274 |
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275 return DebuggerScript; |
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276 |
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277 })(); |