Mercurial > hg > truffle
annotate graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/parser/Parser.java @ 7517:b6743d7eb8d4
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author | Doug Simon <doug.simon@oracle.com> |
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date | Tue, 22 Jan 2013 20:36:00 +0100 |
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1 /* |
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2 * Copyright (c) 2012, 2012, 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 import java.util.*; |
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28 |
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29 import com.oracle.truffle.sl.*; |
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30 import com.oracle.truffle.sl.nodes.*; |
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31 |
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32 // Checkstyle: stop |
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33 // @formatter:off |
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34 public class Parser { |
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35 public static final int _EOF = 0; |
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36 public static final int _identifier = 1; |
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37 public static final int _stringLiteral = 2; |
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38 public static final int _numericLiteral = 3; |
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39 public static final int maxT = 25; |
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40 |
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41 static final boolean T = true; |
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42 static final boolean x = false; |
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43 static final int minErrDist = 2; |
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44 |
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45 public Token t; // last recognized token |
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46 public Token la; // lookahead token |
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47 int errDist = minErrDist; |
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48 |
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49 public final Scanner scanner; |
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50 public final Errors errors; |
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51 private final NodeFactory factory; |
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52 |
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53 public Parser(Scanner scanner, NodeFactory factory) { |
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54 this.scanner = scanner; |
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55 this.factory = factory; |
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56 errors = new Errors(); |
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57 } |
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58 |
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59 void SynErr(int n) { |
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60 if (errDist >= minErrDist) |
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61 errors.SynErr(la.line, la.col, n); |
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62 errDist = 0; |
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63 } |
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64 |
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65 public void SemErr(String msg) { |
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66 if (errDist >= minErrDist) |
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67 errors.SemErr(t.line, t.col, msg); |
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68 errDist = 0; |
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69 } |
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70 |
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71 void Get() { |
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72 for (;;) { |
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73 t = la; |
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74 la = scanner.Scan(); |
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75 if (la.kind <= maxT) { |
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76 ++errDist; |
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77 break; |
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78 } |
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79 |
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80 la = t; |
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81 } |
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82 } |
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83 |
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84 void Expect(int n) { |
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85 if (la.kind == n) |
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86 Get(); |
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87 else { |
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88 SynErr(n); |
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89 } |
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90 } |
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91 |
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92 boolean StartOf(int s) { |
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93 return set[s][la.kind]; |
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94 } |
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95 |
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96 void ExpectWeak(int n, int follow) { |
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97 if (la.kind == n) |
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98 Get(); |
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99 else { |
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100 SynErr(n); |
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101 while (!StartOf(follow)) |
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102 Get(); |
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103 } |
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104 } |
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105 |
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106 boolean WeakSeparator(int n, int syFol, int repFol) { |
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107 int kind = la.kind; |
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108 if (kind == n) { |
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109 Get(); |
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110 return true; |
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111 } else if (StartOf(repFol)) |
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112 return false; |
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113 else { |
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114 SynErr(n); |
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115 while (!(set[syFol][kind] || set[repFol][kind] || set[0][kind])) { |
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116 Get(); |
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117 kind = la.kind; |
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118 } |
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119 return StartOf(syFol); |
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120 } |
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121 } |
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122 |
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123 void SimpleLanguage() { |
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124 Function(); |
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125 while (la.kind == 4) { |
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126 Function(); |
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127 } |
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128 } |
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129 |
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130 void Function() { |
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131 Expect(4); |
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132 factory.startFunction(); |
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133 Expect(1); |
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134 String name = t.val; |
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135 StatementNode body = Block(); |
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136 factory.createFunction(body, name); |
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137 } |
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138 |
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139 StatementNode Block() { |
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140 StatementNode result; |
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141 List<StatementNode> statements = new ArrayList<>(); |
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142 Expect(5); |
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parents:
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143 while (StartOf(1)) { |
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144 StatementNode statement = Statement(); |
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145 statements.add(statement); |
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146 } |
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147 Expect(6); |
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148 result = factory.createBlock(statements); |
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149 return result; |
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150 } |
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151 |
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152 StatementNode Statement() { |
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153 StatementNode result; |
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154 result = null; |
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155 if (la.kind == 7) { |
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156 result = WhileStatement(); |
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157 } else if (la.kind == 1) { |
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158 result = AssignmentStatement(); |
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159 } else if (la.kind == 12) { |
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160 result = OutputStatement(); |
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161 } else if (la.kind == 13) { |
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162 result = ReturnStatement(); |
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163 } else SynErr(26); |
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164 return result; |
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165 } |
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166 |
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167 StatementNode WhileStatement() { |
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168 StatementNode result; |
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169 Expect(7); |
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|
170 Expect(8); |
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171 ConditionNode condition = Expression(); |
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172 Expect(9); |
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173 StatementNode body = Block(); |
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174 result = factory.createWhile(condition, body); |
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175 return result; |
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|
176 } |
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177 |
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178 StatementNode AssignmentStatement() { |
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179 StatementNode result; |
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180 Expect(1); |
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181 String name = t.val; |
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182 Expect(10); |
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|
183 TypedNode rvalue = Expression(); |
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184 Expect(11); |
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185 result = factory.createAssignment(name, rvalue); |
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186 return result; |
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Simple Language: A simple dynamic programming language to demonstrate Truffle features
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|
187 } |
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Simple Language: A simple dynamic programming language to demonstrate Truffle features
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|
188 |
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parents:
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|
189 StatementNode OutputStatement() { |
213c1297a814
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|
190 StatementNode result; |
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191 List<TypedNode> expressions = new ArrayList<>(); |
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|
192 Expect(12); |
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parents:
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|
193 while (StartOf(2)) { |
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194 TypedNode value = Expression(); |
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195 expressions.add(value); |
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|
196 } |
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|
197 Expect(11); |
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198 result = factory.createPrint(expressions); |
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199 return result; |
213c1297a814
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Christian Wimmer <christian.wimmer@oracle.com>
parents:
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|
200 } |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
201 |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
202 StatementNode ReturnStatement() { |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
203 StatementNode result; |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
204 Expect(13); |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
205 TypedNode value = Expression(); |
213c1297a814
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parents:
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|
206 Expect(11); |
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|
207 result = factory.createReturn(value); |
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parents:
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|
208 return result; |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
209 } |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
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changeset
|
210 |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
211 TypedNode Expression() { |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
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changeset
|
212 TypedNode result; |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
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|
213 result = ValueExpression(); |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
214 if (StartOf(3)) { |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
215 switch (la.kind) { |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
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parents:
diff
changeset
|
216 case 14: { |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
217 Get(); |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
218 break; |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
219 } |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
220 case 15: { |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
221 Get(); |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
222 break; |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
223 } |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
224 case 16: { |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
225 Get(); |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
226 break; |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
227 } |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
228 case 17: { |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
229 Get(); |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
230 break; |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
231 } |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
232 case 18: { |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
233 Get(); |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
234 break; |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
235 } |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
236 case 19: { |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
237 Get(); |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
238 break; |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
239 } |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
240 } |
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parents:
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diff
changeset
|
241 String op = t.val; |
7292
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
242 TypedNode right = ValueExpression(); |
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Updated truffle-sl for the changed operation code generation.
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parents:
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|
243 result = factory.createBinary(op, result, right); |
7292
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
244 } |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
245 return result; |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
246 } |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
247 |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
248 TypedNode ValueExpression() { |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
249 TypedNode result; |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
250 result = Term(); |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
251 while (la.kind == 20 || la.kind == 21) { |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
252 if (la.kind == 20) { |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
253 Get(); |
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Simple Language: A simple dynamic programming language to demonstrate Truffle features
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254 } else { |
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255 Get(); |
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256 } |
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257 String op = t.val; |
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258 TypedNode right = Term(); |
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259 result = factory.createBinary(op, result, right); |
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260 } |
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261 return result; |
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parents:
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|
262 } |
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|
263 |
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|
264 TypedNode Term() { |
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|
265 TypedNode result; |
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266 result = Factor(); |
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267 while (la.kind == 22 || la.kind == 23) { |
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268 if (la.kind == 22) { |
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269 Get(); |
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270 } else { |
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parents:
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|
271 Get(); |
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272 } |
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273 String op = t.val; |
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274 TypedNode right = Factor(); |
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275 result = factory.createBinary(op, result, right); |
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276 } |
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277 return result; |
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|
278 } |
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279 |
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280 TypedNode Factor() { |
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281 TypedNode result; |
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282 result = null; |
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283 if (la.kind == 24) { |
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284 result = TimeRef(); |
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285 } else if (la.kind == 1) { |
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286 result = VariableRef(); |
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287 } else if (la.kind == 2) { |
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288 result = StringLiteral(); |
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289 } else if (la.kind == 3) { |
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290 result = NumericLiteral(); |
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291 } else if (la.kind == 8) { |
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292 Get(); |
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293 result = Expression(); |
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294 Expect(9); |
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295 } else SynErr(27); |
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296 return result; |
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parents:
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|
297 } |
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298 |
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|
299 TypedNode TimeRef() { |
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|
300 TypedNode result; |
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|
301 Expect(24); |
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302 result = factory.createTime(); |
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303 return result; |
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Christian Wimmer <christian.wimmer@oracle.com>
parents:
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|
304 } |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
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|
305 |
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parents:
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|
306 TypedNode VariableRef() { |
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Christian Wimmer <christian.wimmer@oracle.com>
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diff
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|
307 TypedNode result; |
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parents:
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|
308 Expect(1); |
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309 result = factory.createLocal(t.val); |
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310 return result; |
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Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
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|
311 } |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
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|
312 |
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|
313 TypedNode StringLiteral() { |
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parents:
diff
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|
314 TypedNode result; |
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Christian Wimmer <christian.wimmer@oracle.com>
parents:
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|
315 Expect(2); |
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|
316 result = factory.createStringLiteral(t.val.substring(1, t.val.length() - 1)); |
7292
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parents:
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317 return result; |
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Christian Wimmer <christian.wimmer@oracle.com>
parents:
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|
318 } |
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Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
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|
319 |
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parents:
diff
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|
320 TypedNode NumericLiteral() { |
213c1297a814
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Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
321 TypedNode result; |
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parents:
diff
changeset
|
322 Expect(3); |
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|
323 result = factory.createNumericLiteral(t.val); |
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parents:
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|
324 return result; |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
325 } |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
326 |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
327 |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
328 |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
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|
329 public void Parse() { |
213c1297a814
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Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
330 la = new Token(); |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
331 la.val = ""; |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
332 Get(); |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
333 SimpleLanguage(); |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
334 Expect(0); |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
335 |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
336 } |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
337 |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
338 private static final boolean[][] set = { |
213c1297a814
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parents:
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|
339 {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}, |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
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parents:
diff
changeset
|
340 {x,T,x,x, x,x,x,T, x,x,x,x, T,T,x,x, x,x,x,x, x,x,x,x, x,x,x}, |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
341 {x,T,T,T, x,x,x,x, T,x,x,x, x,x,x,x, x,x,x,x, x,x,x,x, T,x,x}, |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
342 {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} |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
343 |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
344 }; |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
345 |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
346 public String ParseErrors() { |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
347 java.io.PrintStream oldStream = System.out; |
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Simple Language: A simple dynamic programming language to demonstrate Truffle features
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parents:
diff
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|
348 |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
349 java.io.OutputStream out = new java.io.ByteArrayOutputStream(); |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
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parents:
diff
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|
350 java.io.PrintStream newStream = new java.io.PrintStream(out); |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
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parents:
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|
351 |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
352 errors.errorStream = newStream; |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
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parents:
diff
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|
353 |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
354 Parse(); |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
355 |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
356 String errorStream = out.toString(); |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
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parents:
diff
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|
357 errors.errorStream = oldStream; |
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Simple Language: A simple dynamic programming language to demonstrate Truffle features
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parents:
diff
changeset
|
358 |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
359 return errorStream; |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
360 |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
361 } |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
362 } // end Parser |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
363 |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
364 class Errors { |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
365 |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
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|
366 public int count = 0; // number of errors detected |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
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|
367 public java.io.PrintStream errorStream = System.out; // error messages go to this stream |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
368 public String errMsgFormat = "-- line {0} col {1}: {2}"; // 0=line, 1=column, 2=text |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
369 |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
370 protected void printMsg(int line, int column, String msg) { |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
371 StringBuffer b = new StringBuffer(errMsgFormat); |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
372 int pos = b.indexOf("{0}"); |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
373 if (pos >= 0) { |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
374 b.delete(pos, pos + 3); |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
375 b.insert(pos, line); |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
376 } |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
377 pos = b.indexOf("{1}"); |
213c1297a814
Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
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378 if (pos >= 0) { |
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379 b.delete(pos, pos + 3); |
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380 b.insert(pos, column); |
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381 } |
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382 pos = b.indexOf("{2}"); |
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383 if (pos >= 0) |
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384 b.replace(pos, pos + 3, msg); |
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385 errorStream.println(b.toString()); |
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386 } |
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387 |
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388 public void SynErr(int line, int col, int n) { |
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389 String s; |
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390 switch (n) { |
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391 case 0: s = "EOF expected"; break; |
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392 case 1: s = "identifier expected"; break; |
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393 case 2: s = "stringLiteral expected"; break; |
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394 case 3: s = "numericLiteral expected"; break; |
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395 case 4: s = "\"function\" expected"; break; |
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396 case 5: s = "\"{\" expected"; break; |
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397 case 6: s = "\"}\" expected"; break; |
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398 case 7: s = "\"while\" expected"; break; |
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399 case 8: s = "\"(\" expected"; break; |
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400 case 9: s = "\")\" expected"; break; |
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401 case 10: s = "\"=\" expected"; break; |
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402 case 11: s = "\";\" expected"; break; |
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403 case 12: s = "\"print\" expected"; break; |
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404 case 13: s = "\"return\" expected"; break; |
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405 case 14: s = "\"<\" expected"; break; |
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406 case 15: s = "\">\" expected"; break; |
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407 case 16: s = "\"<=\" expected"; break; |
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408 case 17: s = "\">=\" expected"; break; |
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409 case 18: s = "\"==\" expected"; break; |
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410 case 19: s = "\"!=\" expected"; break; |
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411 case 20: s = "\"+\" expected"; break; |
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412 case 21: s = "\"-\" expected"; break; |
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413 case 22: s = "\"*\" expected"; break; |
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414 case 23: s = "\"/\" expected"; break; |
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415 case 24: s = "\"time\" expected"; break; |
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416 case 25: s = "??? expected"; break; |
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417 case 26: s = "invalid Statement"; break; |
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418 case 27: s = "invalid Factor"; break; |
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419 default: |
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420 s = "error " + n; |
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421 break; |
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422 } |
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423 printMsg(line, col, s); |
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424 count++; |
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425 } |
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426 |
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427 public void SemErr(int line, int col, String s) { |
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428 printMsg(line, col, s); |
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429 count++; |
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430 } |
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431 |
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432 public void SemErr(String s) { |
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433 errorStream.println(s); |
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434 count++; |
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435 } |
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436 |
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437 public void Warning(int line, int col, String s) { |
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438 printMsg(line, col, s); |
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439 } |
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440 |
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441 public void Warning(String s) { |
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442 errorStream.println(s); |
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443 } |
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444 } // Errors |
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445 |
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446 class FatalError extends RuntimeException { |
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447 |
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448 public static final long serialVersionUID = 1L; |
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449 |
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450 public FatalError(String s) { |
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451 super(s); |
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452 } |
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453 } |