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annotate parser.js @ 299:c0561cb06ee3

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Add readAll method to file objects
author Michael Pavone <pavone@retrodev.com>
date Fri, 25 Jul 2014 08:24:39 -0700
parents f73ebc146af9
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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5
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1
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2 function op(left, op, right)
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3 {
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4 this.left = left;
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5 if (op instanceof Array) {
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6 op = op[0];
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7 }
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8 this.op = op;
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9 this.right = right;
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10 }
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11 op.prototype.valueOf = function(indent) {
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12 return this.left.valueOf(indent) + ' ' + this.op.valueOf(indent) + ' ' + this.right.valueOf(indent);
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13 };
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14
19
132c7756860e Use populateSymbols to generate symbol tables during compilation rather than populating them as we go. This change allows us to refer to symbols defined later in the input stream and also gives the symbol table logic a single home that can be used both by the compiler and editor.
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15 function symbol(name, symbols)
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16 {
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17 this.name = name;
19
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18 this.symbols = symbols;
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19 this.dirty = false;
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20 }
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21 symbol.prototype.cleanName = function() {
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22 return this.name[0] == ':' ? this.name.substr(1) : this.name;
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23 }
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24 symbol.prototype.valueOf = function() {
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25 return this.name;
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26 };
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27
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28 function intlit(val, bits, unsigned)
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29 {
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30 if (!bits) {
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31 bits = 32;
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32 }
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33 if (unsigned === undefined) {
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34 unsigned = false;
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35 }
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36 this.unsigned = unsigned;
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37 this.bits = bits;
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38 this.val = val;
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39 }
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40 intlit.prototype.valueOf = function() {
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41 var val = '' + this.val;
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42 if (this.bits != 32 || this.unsigned) {
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43 val += this.unsigned ? 'u' : 'i'
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44 val += this.bits;
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45 }
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46 return val;
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47 };
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48
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49 function floatlit(val, bits)
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50 {
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51 this.val = val;
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52 this.bits = bits;
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53 }
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54 floatlit.prototype.valueOf = function() {
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55 return '' + val;
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56 };
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57
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58 function strlit(val)
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59 {
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60 this.val = val;
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61 }
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62 strlit.prototype.valueOf = function() {
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63 return '"'+this.val+'"';
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64 };
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65
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66 function listlit(val)
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67 {
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68 this.val = val;
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69 }
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70 listlit.prototype.valueOf = function(indent) {
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71 if (indent === undefined) {
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72 indent = '';
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73 }
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74 var nextindent = indent + '\t';
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75 var val = '['
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76 for (var i = 0; i < this.val.length; i++) {
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77 val += '\n' + nextindent + this.val[i].valueOf(nextindent);
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78 }
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79 if (this.val.length) {
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80 val += '\n' + indent;
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81 }
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82 val += ']';
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83 return val;
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84 };
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85
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86 function arraylit(val)
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87 {
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88 this.val = val;
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89 }
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90 arraylit.prototype.valueOf = function(indent) {
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91 if (indent === undefined) {
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92 indent = '';
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93 }
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94 var nextindent = indent + '\t';
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95 var val = '#['
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96 for (var i = 0; i < this.val.length; i++) {
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97 val += '\n' + nextindent + this.val[i].valueOf(nextindent);
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98 }
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99 if (this.val.length) {
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100 val += '\n' + indent;
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101 }
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102 val += ']';
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103 return val;
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104 };
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105
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106 function funcall(name, args)
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107 {
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108 this.name = name;
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109 this.args = args;
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110 this.receiver = null;
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111 this.dirty = false;
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112 }
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113 funcall.prototype.valueOf = function(indent) {
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114 var parts = this.name.split(':');
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115 var val = '';
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116 if (this.receiver) {
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117 val += this.receiver.valueOf(indent);
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118 }
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119 var curarg = 0;
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120 for (var i = 0; i < parts.length; i++) {
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121 if (val) {
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122 val += ' ';
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123 }
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124 if (parts[i]) {
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125 val += parts[i] + ': ';
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126 }
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127 if (curarg < this.args.length) {
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128 val += this.args[curarg++].valueOf(indent);
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129 }
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130 }
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131 while (curarg < this.args.length) {
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132 val += ' ' + this.args[curarg++].valueOf(indent);
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133 }
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134 return val;
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135 };
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136
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137 function object(messages)
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138 {
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139 this.messages = messages;
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140 this.name = null;
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141 }
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142 object.prototype.valueOf = function(indent) {
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143 if (indent === undefined) {
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144 indent = '';
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145 }
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146 var nextindent = indent + '\t';
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147 var val = '#{';
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148 for (var i = 0; i < this.messages.length; i++) {
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149 val += '\n' + nextindent + this.messages[i].valueOf(nextindent);
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150 }
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151 if (val.length > 2) {
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152 val += '\n' + indent;
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153 }
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154 val += '}';
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155 return val;
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156 };
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157
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158 function lambda(args, expressions)
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159 {
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160 this.args = args ? args : [];
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161 this.expressions = expressions;
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162 }
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163 lambda.prototype.valueOf = function(indent) {
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164 if (indent === undefined) {
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165 indent = '';
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166 }
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167 var nextindent = indent + '\t';
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168 var val = '';
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169 for (var i = 0; i < this.args.length; i++) {
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170 val += this.args[i].valueOf(indent) + ' ';
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171 }
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172 val += '{';
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173 for (var i = 0; i < this.expressions.length; i++) {
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174 val += '\n' + nextindent + this.expressions[i].valueOf(nextindent);
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175 }
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176 if (this.expressions.length) {
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177 val += '\n' + indent;
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178 }
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179 val += '}';
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180 return val;
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181 };
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182
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183 function assignment(sym, expr)
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184 {
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185 this.symbol = sym;
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186 this.expression = expr;
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187 }
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188 assignment.prototype.valueOf = function(indent) {
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189 return this.symbol.valueOf(indent) + ' <- ' + this.expression.valueOf(indent);
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190 };
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191
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192 function isLambda(node)
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193 {
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194 return node instanceof lambda;
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195 }
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196
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197 var grammar =
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198 'start = ws module:(object / lambda) ws { return module; };' +
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199 'ws = ([ \\t\\n\\r] / "//" [^\\n]* "\\n" / "/*" ([^*] / "*" ! "/")* "*/")*;' +
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200 'hws = ([ \\t] / "/*" ([^*] / "*" ! "/")* "*/" )*;' +
214
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201 'expr = e:(funcall / methcall / assignment / opexpr) ws { return e; };' +
229
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202 'opexpr = left:compareop pieces:(hws ("&&" / "||") ws compareop)* { if (pieces.length) { var cur = new op(left, pieces[0][1], pieces[0][3]); for (var i = 1; i < pieces.length; i++) { cur = new op(cur, pieces[i][1], pieces[i][3]); } return cur; } else { return left; } };'+
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203 'compareop = left:maybecons pieces:(hws ("<=" / ">=" / "<" / ">" / "=" / "!=") ws maybecons)* { if (pieces.length) { var cur = new op(left, pieces[0][1], pieces[0][3]); for (var i = 1; i < pieces.length; i++) { cur = new op(cur, pieces[i][1], pieces[i][3]); } return cur; } else { return left; } };'+
170
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204 'maybecons = consop / addsub;' +
229
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205 'consop = left:addsub hws "|" ws right:maybecons { return new op(left, "|", right); };'+
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206 'addsub = left:muldiv pieces:(hws ((("xor"/"and"/"or") ! [a-zA-Z_!?@0-9])/("+"/"-"/".")) ws muldiv)* { if (pieces.length) { var cur = new op(left, pieces[0][1], pieces[0][3]); for (var i = 1; i < pieces.length; i++) { cur = new op(cur, pieces[i][1], pieces[i][3]); } return cur; } else { return left; } };'+
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207 'muldiv = left:primlitsym pieces:(hws ("*"/"/"/"%") ws primlitsym)* { if (pieces.length) { var cur = new op(left, pieces[0][1], pieces[0][3]); for (var i = 1; i < pieces.length; i++) { cur = new op(cur, pieces[i][1], pieces[i][3]); } return cur; } else { return left; } };'+
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208 'primlitsym = hws val:(float / hex / binary / int / string / symbol / object / array / list / lambda / "(" ws expr:expr hws ")" { return expr; }) { return val; };' +
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209 'symbol = chars:[a-zA-Z_!?@]+ trailing:(":"? [a-zA-Z_!?@0-9])* ! ":" { for (var i = 0; i < trailing.length; i++) { trailing[i] = trailing[i].join(""); } return new symbol(chars.join("") + trailing.join("")); };' +
286
ddf38b66b2e2 Finish support for floating point numbers in C backend
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210 'float = digits:[0-9]+ "." decimals:[0-9]+ size:("f" ("32" / "64"))? { var bits = size ? parseInt(size[1], 10) : 64; return new floatlit(parseFloat(digits.join("") + "." + decimals.join("")), bits); };' +
49
f2cda2e6f70e Fix os open to optionally take a file permission bit parameter. Update example to use this parameter. Add support for hex and binary integer literals
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211 'binary = "0b" digits:[01]+ { return new intlit(parseInt(digits.join(""), 2)); };' +
155
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212 'hex = "0x" digits:[0-9a-fA-F]+ size:([iu] ("8" / "16" / "32" / "64"))? { var bits = size ? parseInt(size[1], 10) : 0; return new intlit(parseInt(digits.join(""), 16), bits, size[0] == "u"); };' +
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213 'int = sign:"-"? digits:[0-9]+ size:([iu] ("8" / "16" / "32" / "64"))? { var bits = size ? parseInt(size[1], 10) : 0; return new intlit(parseInt(sign + digits.join(""), 10), bits, size[0] == "u"); };' +
44
9dd370530f69 Fix escape codes in string literals. Don't print out the return value of main method. Fixup fib example to use print: method. Cleanup error handling in compiler slightly
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214 'string = "\\"" text:(strpart/escape)* "\\"" { return new strlit(text.join("")); };' +
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215 'strpart = text:[^\\"\\\\]+ { return text.join(""); };' +
233
c9cacb06964a Fix tab escapes in old parser
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216 'escape = "\\\\" char:[nt\\"r\\\\] { if (char == "n") { return "\\n"; } if (char == "r") { return "\\r"; } if (char == "t") { return "\\t"; } return char; };' +
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217 'object = "#{" ws messages:(assignment / funexpr)* "}" { return new object(messages); };' +
176
ab204751d1e7 Allow all expressions in array and list literals
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218 'array = "#[" ws els:expr* "]" { return new arraylit(els); };' +
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219 'list = "[" ws els:expr* "]" { return new listlit(els); };' +
170
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220 'opsym = name:("&&" / "||" / "<=" / ">=" / "<" / ">" / "=" / "!=" / "+" / "-" / "." / "*" / "/" / "%" / "|") { return new symbol(name); };' +
187
810edf474f86 Fix parse precedence problem between opsyms and symbols in assignments
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221 'assignment = ws sym:(opsym / symbol) hws "<-" expr:expr ws { return new assignment(sym, expr); }' +
214
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222 'lambda = args:((& ":") argname+ )? "{" ws exprs:expr* "}" { return new lambda(args[1], exprs); };' +
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223 'argname = init:":"? chars:[a-zA-Z_!?@]+ trailing:[a-zA-Z_!?@0-9]* hws { return new symbol(init + chars.join("") + trailing.join("")); };' +
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224 'funexpr = f: funcall ws { return f; };' +
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225 'funcall = hws parts: funcallpart+ { var fun = ""; var args = []; for (var i = 0; i < parts.length; i++) { fun += parts[i].name; args = args.concat(parts[i].args); } return new funcall(fun, args); };' +
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226 'funcallpart = fun:funpart args:opexpr* hws { return { name: fun, args: args}; };' +
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227 'funpart = chars:[a-zA-Z_!?@]+ middle:[a-zA-Z_!?@0-9]* ":" & [ \\t\\n\\r] { return chars.join("") + middle.join("") + ":"; };' +
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228 'methcall = receiver:opexpr hws info:methcallrest { info.receiver = receiver; return info; };' +
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229 'methcallrest = funcall / unarymeth;' +
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diff changeset
230 'unarymeth = name:symbol { return new funcall(name.name, []); };';
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231 var parser = PEG.buildParser(grammar);
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232
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233