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annotate engine-runner.js @ 50:a9d7445d07d4

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Just a few JS warning fixes.
author Atul Varma <varmaa@toolness.com>
date Fri, 16 May 2008 02:14:19 -0700
parents 2c4d6b171f60
children 7dc2c7bded08
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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6
aeb4289c141f Added a test runner class w/ simple test suite.
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1 function Zui() {
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2 }
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3
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4 Zui.prototype = {
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6 // Returns a 2-element list containing the width and height of the
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7 // screen, in characters. The width may be 255, which means
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8 // "infinite".
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9
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10 getSize: function() {
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11 },
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12 onLineInput: function(callback) {
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13 },
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14 onCharacterInput: function(callback) {
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15 },
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16 onSave: function(callback) {
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17 },
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18 onRestore: function(callback) {
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19 },
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20 onQuit: function() {
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21 },
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22 onRestart: function(callback) {
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23 },
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24 onWimpOut: function(callback) {
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25 },
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26 onBreakpoint: function(callback) {
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27 },
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28
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29 // From the Z-Machine spec for set_text_style: Sets the text style
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30 // to: Roman (if 0), Reverse Video (if 1), Bold (if 2), Italic (4),
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31 // Fixed Pitch (8). In some interpreters (though this is not
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32 // required) a combination of styles is possible (such as reverse
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33 // video and bold). In these, changing to Roman should turn off all
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34 // the other styles currently set.
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35
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36 onSetStyle: function(textStyle, foreground, background) {
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37 },
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39 // From the Z-Machine spec for split_window: Splits the screen so
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40 // that the upper window has the given number of lines: or, if
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41 // this is zero, unsplits the screen again.
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42
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43 onSplitWindow: function(numLines) {
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44 },
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45 onSetWindow: function(window) {
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46 },
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47
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48 // From the Z-Machine spec for erase_window: Erases window with
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49 // given number (to background colour); or if -1 it unsplits the
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50 // screen and clears the lot; or if -2 it clears the screen
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51 // without unsplitting it.
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52
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53 onEraseWindow: function(window) {
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54 },
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55 onEraseLine: function() {
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56 },
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57 onSetCursor: function(x, y) {
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58 },
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59
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60 // From the Z-Machine spec for buffer_mode: If set to 1, text output
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61 // on the lower window in stream 1 is buffered up so that it can be
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62 // word-wrapped properly. If set to 0, it isn't.
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63
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64 onSetBufferMode: function(flag) {
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65 },
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66 onSetInputStream: function() {
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67 },
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68 onGetCursor: function() {
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69 },
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70 onPrint: function(output) {
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71 },
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72 onPrintTable: function(lines) {
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73 }
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74 };
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75
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76 function EngineRunner(engine, zui, logfunc) {
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77 this._engine = engine;
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78 this._zui = zui;
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79 this._isRunning = false;
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80 this._isInLoop = false;
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81 this._isWaitingForCallback = false;
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82
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83 if (logfunc) {
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84 this._log = logfunc;
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85 } else {
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86 this._log = function() {};
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87 }
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88
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89 var self = this;
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90
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91 this.__proto__ = {
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92 stop: function() {
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93 self._isRunning = false;
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94 },
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95
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96 run: function() {
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97 var size = self._zui.getSize();
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98
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99 self._isRunning = true;
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100 self._engine.m_memory[0x20] = size[1];
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101 self._engine.m_memory[0x21] = size[0];
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102 self._continueRunning();
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103 },
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104
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105 _continueRunning: function() {
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106 while (self._isRunning && !self._isWaitingForCallback) {
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107 self._loop();
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108 }
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109 },
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110
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111 _receiveLineInput: function(input) {
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112 self._isWaitingForCallback = false;
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113 self._engine.answer(1, input);
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114 if (!self._isInLoop) {
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115 self._continueRunning();
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116 } else {
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117 /* We're still inside _loop(), so just return. */
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118 }
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119 },
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120
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121 _receiveCharacterInput: function(input) {
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122 self._isWaitingForCallback = false;
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123 self._engine.answer(0, input);
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124 if (!self._isInLoop) {
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125 self._continueRunning();
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126 } else {
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127 /* We're still inside _loop(), so just return. */
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128 }
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129 },
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3a85b5915ea6 Added bad implementation of character input. The 'info' command in Troll no longer crashes the Z-Machine, but because we don't currently support multiple windows and the the 'info' command uses the top window as an interface, it still looks like it's hanging.
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130
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131 _loop: function() {
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132 if (self._isInLoop)
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133 throw new Error("Already in loop!");
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134
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135 self._isInLoop = true;
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136 var engine = self._engine;
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137
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138 engine.run();
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139
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140 var text = engine.consoleText();
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141 if (text)
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142 self._zui.onPrint(text);
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143
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144 var effect = '"' + engine.effect(0) + '"';
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145
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146 var logString = "[ " + engine.effect(0);
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147
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148 for (var i = 1; engine.effect(i) != undefined; i++) {
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149 var value = engine.effect(i);
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150 if (typeof value == "string")
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151 value = value.quote();
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152 logString += ", " + value;
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153 }
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154
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155 self._log(logString + " ]");
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156
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157 switch (effect) {
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158 case GNUSTO_EFFECT_INPUT:
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159 self._isWaitingForCallback = true;
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160 self._zui.onLineInput(self._receiveLineInput);
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161 break;
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162 case GNUSTO_EFFECT_INPUT_CHAR:
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163 self._isWaitingForCallback = true;
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164 self._zui.onCharacterInput(self._receiveCharacterInput);
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165 break;
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166 case GNUSTO_EFFECT_SAVE:
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167 case GNUSTO_EFFECT_RESTORE:
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168 throw new Error("Unimplemented effect: " + effect);
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169 case GNUSTO_EFFECT_QUIT:
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170 self.stop();
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171 self._zui.onQuit();
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172 break;
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173 case GNUSTO_EFFECT_RESTART:
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174 case GNUSTO_EFFECT_WIMP_OUT:
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175 case GNUSTO_EFFECT_BREAKPOINT:
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176 case GNUSTO_EFFECT_FLAGS_CHANGED:
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177 case GNUSTO_EFFECT_PIRACY:
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178 throw new Error("Unimplemented effect: " + effect);
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179 case GNUSTO_EFFECT_STYLE:
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180 self._zui.onSetStyle(engine.effect(1),
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181 engine.effect(2),
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182 engine.effect(3));
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183 break;
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184 case GNUSTO_EFFECT_SOUND:
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185 throw new Error("Unimplemented effect: " + effect);
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186 case GNUSTO_EFFECT_SPLITWINDOW:
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187 self._zui.onSplitWindow(engine.effect(1));
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188 break;
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189 case GNUSTO_EFFECT_SETWINDOW:
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190 self._zui.onSetWindow(engine.effect(1));
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191 break;
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192 case GNUSTO_EFFECT_ERASEWINDOW:
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193 self._zui.onEraseWindow(engine.effect(1));
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194 break;
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195 case GNUSTO_EFFECT_ERASELINE:
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196 throw new Error("Unimplemented effect: " + effect);
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197 case GNUSTO_EFFECT_SETCURSOR:
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198 self._zui.onSetCursor(engine.effect(2),
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199 engine.effect(1));
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200 break;
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201 case GNUSTO_EFFECT_SETBUFFERMODE:
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202 self._zui.onSetBufferMode(engine.effect(1));
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203 break;
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204 case GNUSTO_EFFECT_SETINPUTSTREAM:
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205 case GNUSTO_EFFECT_GETCURSOR:
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206 case GNUSTO_EFFECT_PRINTTABLE:
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207 throw new Error("Unimplemented effect: " + effect);
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208 }
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209
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210 self._isInLoop = false;
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211 }
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212 };
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213 }