Mercurial > hg > graal-compiler
annotate graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/parser/Parser.java @ 20048:8af4e7e0ac9f
Make IGV more robust when parsing block information
author | Gilles Duboscq <gilles.m.duboscq@oracle.com> |
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date | Fri, 27 Mar 2015 14:09:21 +0100 |
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1 /* |
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2 * Copyright (c) 2012, 2014, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 */ |
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23 |
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24 // The content of this file is automatically generated. DO NOT EDIT. |
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25 |
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26 package com.oracle.truffle.sl.parser; |
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27 |
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28 import java.util.*; |
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29 |
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30 import com.oracle.truffle.api.source.*; |
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31 import com.oracle.truffle.sl.*; |
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32 import com.oracle.truffle.sl.nodes.*; |
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33 import com.oracle.truffle.sl.runtime.*; |
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34 |
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35 // Checkstyle: stop |
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36 // @formatter:off |
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37 public class Parser { |
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38 public static final int _EOF = 0; |
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39 public static final int _identifier = 1; |
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40 public static final int _stringLiteral = 2; |
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41 public static final int _numericLiteral = 3; |
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42 public static final int maxT = 31; |
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43 |
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44 static final boolean _T = true; |
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45 static final boolean _x = false; |
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46 static final int minErrDist = 2; |
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47 |
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48 public Token t; // last recognized token |
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49 public Token la; // lookahead token |
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50 int errDist = minErrDist; |
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51 |
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52 public final Scanner scanner; |
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53 public final Errors errors; |
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54 private final SLNodeFactory factory; |
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55 |
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56 public Parser(SLContext context, Source source) { |
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57 this.scanner = new Scanner(source.getInputStream()); |
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58 this.factory = new SLNodeFactory(context, source); |
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59 errors = new Errors(); |
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60 } |
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61 |
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62 void SynErr(int n) { |
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63 if (errDist >= minErrDist) |
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64 errors.SynErr(la.line, la.col, n); |
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65 errDist = 0; |
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66 } |
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67 |
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68 public void SemErr(String msg) { |
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69 if (errDist >= minErrDist) |
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70 errors.SemErr(t.line, t.col, msg); |
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71 errDist = 0; |
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72 } |
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73 |
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74 void Get() { |
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75 for (;;) { |
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76 t = la; |
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77 la = scanner.Scan(); |
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78 if (la.kind <= maxT) { |
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79 ++errDist; |
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80 break; |
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81 } |
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82 |
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83 la = t; |
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84 } |
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85 } |
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86 |
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87 void Expect(int n) { |
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88 if (la.kind == n) |
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89 Get(); |
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90 else { |
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91 SynErr(n); |
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92 } |
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93 } |
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94 |
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95 boolean StartOf(int s) { |
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96 return set[s][la.kind]; |
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97 } |
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98 |
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99 void ExpectWeak(int n, int follow) { |
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100 if (la.kind == n) |
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101 Get(); |
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102 else { |
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103 SynErr(n); |
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104 while (!StartOf(follow)) |
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105 Get(); |
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106 } |
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107 } |
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108 |
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109 boolean WeakSeparator(int n, int syFol, int repFol) { |
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110 int kind = la.kind; |
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111 if (kind == n) { |
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112 Get(); |
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113 return true; |
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114 } else if (StartOf(repFol)) |
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115 return false; |
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116 else { |
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117 SynErr(n); |
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118 while (!(set[syFol][kind] || set[repFol][kind] || set[0][kind])) { |
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119 Get(); |
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120 kind = la.kind; |
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121 } |
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122 return StartOf(syFol); |
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123 } |
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124 } |
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125 |
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126 void SimpleLanguage() { |
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127 Function(); |
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128 while (la.kind == 4) { |
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129 Function(); |
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130 } |
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131 } |
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132 |
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133 void Function() { |
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134 Expect(4); |
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135 Expect(1); |
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136 Token identifierToken = t; |
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137 Expect(5); |
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138 int bodyStartPos = t.charPos; |
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139 factory.startFunction(identifierToken, bodyStartPos); |
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140 if (la.kind == 1) { |
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141 Get(); |
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142 factory.addFormalParameter(t); |
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143 while (la.kind == 6) { |
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144 Get(); |
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145 Expect(1); |
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146 factory.addFormalParameter(t); |
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147 } |
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148 } |
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149 Expect(7); |
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150 SLStatementNode body = Block(false); |
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151 factory.finishFunction(body); |
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152 } |
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153 |
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154 SLStatementNode Block(boolean inLoop) { |
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155 SLStatementNode result; |
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156 factory.startBlock(); |
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157 List<SLStatementNode> body = new ArrayList<>(); |
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158 Expect(8); |
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159 int start = t.charPos; |
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160 while (StartOf(1)) { |
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161 SLStatementNode s = Statement(inLoop); |
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162 body.add(s); |
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163 } |
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164 Expect(9); |
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165 int length = (t.charPos + t.val.length()) - start; |
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166 result = factory.finishBlock(body, start, length); |
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167 return result; |
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168 } |
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169 |
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170 SLStatementNode Statement(boolean inLoop) { |
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171 SLStatementNode result; |
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172 result = null; |
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173 switch (la.kind) { |
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174 case 13: { |
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175 result = WhileStatement(); |
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176 break; |
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177 } |
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178 case 10: { |
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179 Get(); |
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180 if (inLoop) { result = factory.createBreak(t); } else { SemErr("break used outside of loop"); } |
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181 Expect(11); |
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182 break; |
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183 } |
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184 case 12: { |
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185 Get(); |
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186 if (inLoop) { result = factory.createContinue(t); } else { SemErr("continue used outside of loop"); } |
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187 Expect(11); |
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188 break; |
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189 } |
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190 case 14: { |
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191 result = IfStatement(inLoop); |
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192 break; |
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193 } |
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194 case 16: { |
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195 result = ReturnStatement(); |
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196 break; |
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197 } |
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198 case 1: case 2: case 3: case 5: { |
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199 result = Expression(); |
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200 Expect(11); |
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201 break; |
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202 } |
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203 default: SynErr(32); break; |
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204 } |
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205 return result; |
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206 } |
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207 |
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208 SLStatementNode WhileStatement() { |
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209 SLStatementNode result; |
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210 Expect(13); |
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211 Token whileToken = t; |
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212 Expect(5); |
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213 SLExpressionNode condition = Expression(); |
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214 Expect(7); |
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215 SLStatementNode body = Block(true); |
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216 result = factory.createWhile(whileToken, condition, body); |
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217 return result; |
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218 } |
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219 |
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220 SLStatementNode IfStatement(boolean inLoop) { |
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221 SLStatementNode result; |
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222 Expect(14); |
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223 Token ifToken = t; |
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224 Expect(5); |
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225 SLExpressionNode condition = Expression(); |
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226 Expect(7); |
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227 SLStatementNode thenPart = Block(inLoop); |
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228 SLStatementNode elsePart = null; |
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229 if (la.kind == 15) { |
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230 Get(); |
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231 elsePart = Block(inLoop); |
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232 } |
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233 result = factory.createIf(ifToken, condition, thenPart, elsePart); |
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234 return result; |
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235 } |
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236 |
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237 SLStatementNode ReturnStatement() { |
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238 SLStatementNode result; |
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239 Expect(16); |
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240 Token returnToken = t; |
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241 SLExpressionNode value = null; |
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242 if (StartOf(2)) { |
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243 value = Expression(); |
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244 } |
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245 result = factory.createReturn(returnToken, value); |
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246 Expect(11); |
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247 return result; |
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248 } |
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249 |
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250 SLExpressionNode Expression() { |
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251 SLExpressionNode result; |
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252 result = LogicTerm(); |
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253 while (la.kind == 17) { |
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254 Get(); |
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255 Token op = t; |
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256 SLExpressionNode right = LogicTerm(); |
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257 result = factory.createBinary(op, result, right); |
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258 } |
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259 return result; |
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260 } |
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261 |
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262 SLExpressionNode LogicTerm() { |
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263 SLExpressionNode result; |
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264 result = LogicFactor(); |
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265 while (la.kind == 18) { |
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266 Get(); |
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267 Token op = t; |
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268 SLExpressionNode right = LogicFactor(); |
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269 result = factory.createBinary(op, result, right); |
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270 } |
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271 return result; |
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272 } |
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273 |
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274 SLExpressionNode LogicFactor() { |
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275 SLExpressionNode result; |
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276 result = Arithmetic(); |
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277 if (StartOf(3)) { |
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278 switch (la.kind) { |
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279 case 19: { |
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280 Get(); |
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281 break; |
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282 } |
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283 case 20: { |
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284 Get(); |
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285 break; |
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286 } |
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287 case 21: { |
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288 Get(); |
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289 break; |
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290 } |
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291 case 22: { |
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292 Get(); |
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293 break; |
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294 } |
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295 case 23: { |
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296 Get(); |
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297 break; |
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298 } |
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299 case 24: { |
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300 Get(); |
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301 break; |
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302 } |
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303 } |
16880
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304 Token op = t; |
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305 SLExpressionNode right = Arithmetic(); |
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306 result = factory.createBinary(op, result, right); |
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307 } |
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|
308 return result; |
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|
309 } |
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|
310 |
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311 SLExpressionNode Arithmetic() { |
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|
312 SLExpressionNode result; |
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313 result = Term(); |
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|
314 while (la.kind == 25 || la.kind == 26) { |
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|
315 if (la.kind == 25) { |
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316 Get(); |
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|
317 } else { |
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parents:
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|
318 Get(); |
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parents:
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|
319 } |
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parents:
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|
320 Token op = t; |
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parents:
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changeset
|
321 SLExpressionNode right = Term(); |
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|
322 result = factory.createBinary(op, result, right); |
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323 } |
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parents:
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|
324 return result; |
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parents:
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|
325 } |
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Christian Humer <christian.humer@gmail.com>
parents:
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diff
changeset
|
326 |
13761
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|
327 SLExpressionNode Term() { |
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|
328 SLExpressionNode result; |
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|
329 result = Factor(); |
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|
330 while (la.kind == 27 || la.kind == 28) { |
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|
331 if (la.kind == 27) { |
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|
332 Get(); |
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|
333 } else { |
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Christian Humer <christian.humer@gmail.com>
parents:
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|
334 Get(); |
7311354f5bf8
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parents:
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changeset
|
335 } |
16880
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|
336 Token op = t; |
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|
337 SLExpressionNode right = Factor(); |
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|
338 result = factory.createBinary(op, result, right); |
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|
339 } |
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|
340 return result; |
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Christian Humer <christian.humer@gmail.com>
parents:
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|
341 } |
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Christian Humer <christian.humer@gmail.com>
parents:
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diff
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|
342 |
13761
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changeset
|
343 SLExpressionNode Factor() { |
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|
344 SLExpressionNode result; |
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|
345 result = null; |
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|
346 if (la.kind == 1) { |
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|
347 Get(); |
18411
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SL: add basic support for creating objects and accessing properties
Andreas Woess <andreas.woess@jku.at>
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diff
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|
348 if (la.kind == 5 || la.kind == 29 || la.kind == 30) { |
18962
cfb85e1f4ca5
Prevent polluting SLFunctionRegistry (via SLNodeFactory.createRead()) with LHS names of assignment
Paul Woegerer <paul.woegerer@oracle.com>
parents:
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diff
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|
349 result = MemberExpression(null, null, t); |
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Prevent polluting SLFunctionRegistry (via SLNodeFactory.createRead()) with LHS names of assignment
Paul Woegerer <paul.woegerer@oracle.com>
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|
350 } else if (StartOf(4)) { |
cfb85e1f4ca5
Prevent polluting SLFunctionRegistry (via SLNodeFactory.createRead()) with LHS names of assignment
Paul Woegerer <paul.woegerer@oracle.com>
parents:
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diff
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|
351 result = factory.createRead(t); |
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Prevent polluting SLFunctionRegistry (via SLNodeFactory.createRead()) with LHS names of assignment
Paul Woegerer <paul.woegerer@oracle.com>
parents:
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|
352 } else SynErr(33); |
13761
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|
353 } else if (la.kind == 2) { |
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|
354 Get(); |
16880
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|
355 result = factory.createStringLiteral(t); |
13761
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parents:
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|
356 } else if (la.kind == 3) { |
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changeset
|
357 Get(); |
16880
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|
358 result = factory.createNumericLiteral(t); |
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359 } else if (la.kind == 5) { |
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360 Get(); |
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361 int start = t.charPos; |
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362 result = Expression(); |
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363 SLExpressionNode expr = result; |
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364 Expect(7); |
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365 int length = (t.charPos + t.val.length()) - start; |
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366 result = factory.createParenExpression(expr, start, length); |
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367 } else SynErr(34); |
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368 return result; |
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369 } |
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370 |
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371 SLExpressionNode MemberExpression(SLExpressionNode r, SLExpressionNode assignmentReceiver, Token assignmentName) { |
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372 SLExpressionNode result; |
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373 result = null; |
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374 SLExpressionNode receiver = r; |
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375 Token nestedAssignmentName = null; |
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376 if (la.kind == 5) { |
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377 Get(); |
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378 List<SLExpressionNode> parameters = new ArrayList<>(); |
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379 SLExpressionNode parameter; |
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380 if (receiver == null) { |
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381 receiver = factory.createRead(assignmentName); |
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382 } |
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383 if (StartOf(2)) { |
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384 parameter = Expression(); |
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385 parameters.add(parameter); |
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386 while (la.kind == 6) { |
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387 Get(); |
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388 parameter = Expression(); |
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389 parameters.add(parameter); |
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390 } |
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391 } |
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392 Expect(7); |
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393 Token finalToken = t; |
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394 result = factory.createCall(receiver, parameters, finalToken); |
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395 } else if (la.kind == 29) { |
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396 Get(); |
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397 SLExpressionNode value = Expression(); |
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398 if (assignmentName == null) { |
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399 SemErr("invalid assignment target"); |
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400 } else if (assignmentReceiver == null) { |
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401 result = factory.createAssignment(assignmentName, value); |
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402 } else { |
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403 result = factory.createWriteProperty(assignmentReceiver, assignmentName, value); |
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404 } |
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405 } else if (la.kind == 30) { |
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406 Get(); |
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407 if (receiver == null) { |
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408 receiver = factory.createRead(assignmentName); |
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409 } |
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410 Expect(1); |
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411 result = factory.createReadProperty(receiver, t); |
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412 nestedAssignmentName = t; |
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413 } else SynErr(35); |
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414 if (la.kind == 5 || la.kind == 29 || la.kind == 30) { |
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415 result = MemberExpression(result, receiver, nestedAssignmentName); |
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416 } |
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417 return result; |
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418 } |
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419 |
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420 |
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421 |
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422 public void Parse() { |
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423 la = new Token(); |
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424 la.val = ""; |
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425 Get(); |
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426 SimpleLanguage(); |
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427 Expect(0); |
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428 |
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429 } |
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430 |
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431 private static final boolean[][] set = { |
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432 {_T,_x,_x,_x, _x,_x,_x,_x, _x,_x,_x,_x, _x,_x,_x,_x, _x,_x,_x,_x, _x,_x,_x,_x, _x,_x,_x,_x, _x,_x,_x,_x, _x}, |
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433 {_x,_T,_T,_T, _x,_T,_x,_x, _x,_x,_T,_x, _T,_T,_T,_x, _T,_x,_x,_x, _x,_x,_x,_x, _x,_x,_x,_x, _x,_x,_x,_x, _x}, |
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434 {_x,_T,_T,_T, _x,_T,_x,_x, _x,_x,_x,_x, _x,_x,_x,_x, _x,_x,_x,_x, _x,_x,_x,_x, _x,_x,_x,_x, _x,_x,_x,_x, _x}, |
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435 {_x,_x,_x,_x, _x,_x,_x,_x, _x,_x,_x,_x, _x,_x,_x,_x, _x,_x,_x,_T, _T,_T,_T,_T, _T,_x,_x,_x, _x,_x,_x,_x, _x}, |
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436 {_x,_x,_x,_x, _x,_T,_T,_T, _x,_x,_x,_T, _x,_x,_x,_x, _x,_T,_T,_T, _T,_T,_T,_T, _T,_T,_T,_T, _T,_T,_T,_x, _x} |
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437 |
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438 }; |
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439 |
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440 public static void parseSL(SLContext context, Source source) { |
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441 Parser parser = new Parser(context, source); |
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442 parser.Parse(); |
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443 if (parser.errors.errors.size() > 0) { |
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444 StringBuilder msg = new StringBuilder("Error(s) parsing script:\n"); |
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445 for (String error : parser.errors.errors) { |
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446 msg.append(error).append("\n"); |
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447 } |
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448 throw new SLException(msg.toString()); |
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449 } |
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450 } |
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451 } // end Parser |
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452 |
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453 class Errors { |
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454 |
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455 protected final List<String> errors = new ArrayList<>(); |
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456 public String errMsgFormat = "-- line {0} col {1}: {2}"; // 0=line, 1=column, 2=text |
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457 |
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458 protected void printMsg(int line, int column, String msg) { |
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459 StringBuffer b = new StringBuffer(errMsgFormat); |
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460 int pos = b.indexOf("{0}"); |
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461 if (pos >= 0) { |
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462 b.delete(pos, pos + 3); |
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463 b.insert(pos, line); |
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464 } |
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465 pos = b.indexOf("{1}"); |
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466 if (pos >= 0) { |
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467 b.delete(pos, pos + 3); |
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468 b.insert(pos, column); |
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469 } |
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470 pos = b.indexOf("{2}"); |
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471 if (pos >= 0) |
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472 b.replace(pos, pos + 3, msg); |
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473 errors.add(b.toString()); |
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474 } |
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475 |
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476 public void SynErr(int line, int col, int n) { |
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Simple Language: A simple dynamic programming language to demonstrate Truffle features
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477 String s; |
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478 switch (n) { |
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479 case 0: s = "EOF expected"; break; |
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480 case 1: s = "identifier expected"; break; |
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481 case 2: s = "stringLiteral expected"; break; |
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482 case 3: s = "numericLiteral expected"; break; |
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483 case 4: s = "\"function\" expected"; break; |
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484 case 5: s = "\"(\" expected"; break; |
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485 case 6: s = "\",\" expected"; break; |
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486 case 7: s = "\")\" expected"; break; |
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487 case 8: s = "\"{\" expected"; break; |
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488 case 9: s = "\"}\" expected"; break; |
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489 case 10: s = "\"break\" expected"; break; |
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490 case 11: s = "\";\" expected"; break; |
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491 case 12: s = "\"continue\" expected"; break; |
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492 case 13: s = "\"while\" expected"; break; |
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493 case 14: s = "\"if\" expected"; break; |
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494 case 15: s = "\"else\" expected"; break; |
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495 case 16: s = "\"return\" expected"; break; |
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496 case 17: s = "\"||\" expected"; break; |
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497 case 18: s = "\"&&\" expected"; break; |
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498 case 19: s = "\"<\" expected"; break; |
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499 case 20: s = "\"<=\" expected"; break; |
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500 case 21: s = "\">\" expected"; break; |
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501 case 22: s = "\">=\" expected"; break; |
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502 case 23: s = "\"==\" expected"; break; |
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503 case 24: s = "\"!=\" expected"; break; |
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504 case 25: s = "\"+\" expected"; break; |
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505 case 26: s = "\"-\" expected"; break; |
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506 case 27: s = "\"*\" expected"; break; |
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507 case 28: s = "\"/\" expected"; break; |
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508 case 29: s = "\"=\" expected"; break; |
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509 case 30: s = "\".\" expected"; break; |
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510 case 31: s = "??? expected"; break; |
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511 case 32: s = "invalid Statement"; break; |
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512 case 33: s = "invalid Factor"; break; |
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513 case 34: s = "invalid Factor"; break; |
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514 case 35: s = "invalid MemberExpression"; break; |
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515 default: |
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516 s = "error " + n; |
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517 break; |
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518 } |
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519 printMsg(line, col, s); |
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520 } |
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521 |
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522 public void SemErr(int line, int col, String s) { |
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523 printMsg(line, col, s); |
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524 } |
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525 |
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526 public void SemErr(String s) { |
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527 errors.add(s); |
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528 } |
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529 |
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530 public void Warning(int line, int col, String s) { |
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531 printMsg(line, col, s); |
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532 } |
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533 |
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534 public void Warning(String s) { |
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535 errors.add(s); |
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536 } |
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537 } // Errors |
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538 |
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539 class FatalError extends RuntimeException { |
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540 |
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541 public static final long serialVersionUID = 1L; |
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Simple Language: A simple dynamic programming language to demonstrate Truffle features
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542 |
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543 public FatalError(String s) { |
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Simple Language: A simple dynamic programming language to demonstrate Truffle features
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544 super(s); |
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Simple Language: A simple dynamic programming language to demonstrate Truffle features
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545 } |
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Simple Language: A simple dynamic programming language to demonstrate Truffle features
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546 } |