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annotate graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/parser/SimpleLanguage.atg @ 7530:5e3d1a68664e

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
applied mx eclipseformat to all Java files
author Doug Simon <doug.simon@oracle.com>
date Wed, 23 Jan 2013 16:34:57 +0100
parents 442668d41bc2
children 698cd036a1ca
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
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1 COMPILER SimpleLanguage
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2
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3 CHARACTERS
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4
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5 letter = 'A'..'Z' + 'a'..'z'.
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6 nonZeroDigit = "123456789".
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7 digit = "0123456789".
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8 cr = '\r'.
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
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9 lf = '\n'.
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10 tab = '\t'.
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11 stringChar = ANY - "\"" - '\\' - cr - lf.
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12
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
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13 TOKENS
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14
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
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15 identifier = letter {letter | digit}.
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16 stringLiteral = "\"" { stringChar } "\"".
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17 numericLiteral = "0" | nonZeroDigit { digit }.
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18
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
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19 PRAGMAS
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20
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
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21 COMMENTS FROM "/*" TO "*/"
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22 COMMENTS FROM "//" TO lf
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
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23 IGNORE cr + lf + tab
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24
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
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25 PRODUCTIONS
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26
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27 SimpleLanguage
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28 =
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29 Function
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30 {
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31 Function
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32 }
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33 .
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34
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
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35 Function
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36 =
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
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37 "function" (. factory.startFunction(); .)
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38 identifier (. String name = t.val; .)
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39 Block<out StatementNode body> (. factory.createFunction(body, name); .)
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40 .
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41
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42 Block<out StatementNode result>
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43 = (. List<StatementNode> statements = new ArrayList<>(); .)
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44 "{"
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45 {
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46 Statement<out StatementNode statement> (. statements.add(statement); .)
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47 }
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48 "}" (. result = factory.createBlock(statements); .)
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49 .
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50
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
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51 Statement<out StatementNode result>
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52 = (. result = null; .)
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53 (
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54 WhileStatement<out result>
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55 |
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56 AssignmentStatement<out result>
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57 |
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58 OutputStatement<out result>
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59 |
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60 ReturnStatement<out result>
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61 )
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62 .
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63
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
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64 WhileStatement<out StatementNode result>
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65 =
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66 "while"
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67 "("
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68 Expression<out ConditionNode condition>
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69 ")"
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70 Block<out StatementNode body> (. result = factory.createWhile(condition, body); .)
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71 .
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72
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73 AssignmentStatement<out StatementNode result>
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74 =
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75 identifier (. String name = t.val; .)
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76 "="
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77 Expression<out TypedNode rvalue>
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78 ";" (. result = factory.createAssignment(name, rvalue); .)
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79 .
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80
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81 OutputStatement<out StatementNode result>
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82 = (. List<TypedNode> expressions = new ArrayList<>(); .)
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83 "print"
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84 {
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85 Expression<out TypedNode value> (. expressions.add(value); .)
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86 }
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87 ";" (. result = factory.createPrint(expressions); .)
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88 .
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89
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90 ReturnStatement<out StatementNode result>
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91 =
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92 "return"
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93 Expression<out TypedNode value> ";" (. result = factory.createReturn(value); .)
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94 .
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95
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96 Expression<out TypedNode result>
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97 =
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98 ValueExpression<out result>
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99 [
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100 ("<" | ">" | "<=" | ">=" | "==" | "!=" ) (. String op = t.val; .)
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101 ValueExpression<out TypedNode right> (. result = factory.createBinary(op, result, right); .)
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102 ]
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103 .
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104
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105 ValueExpression<out TypedNode result>
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106 =
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107 Term<out result>
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108 {
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109 ("+" | "-") (. String op = t.val; .)
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110 Term<out TypedNode right> (. result = factory.createBinary(op, result, right); .)
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111 }
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112 .
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113
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114 Term<out TypedNode result>
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115 =
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116 Factor<out result>
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117 {
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118 ("*" | "/") (. String op = t.val; .)
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119 Factor<out TypedNode right> (. result = factory.createBinary(op, result, right); .)
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120 }
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121 .
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122
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123 Factor<out TypedNode result>
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124 = (. result = null; .)
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125 (
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126 TimeRef<out result>
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127 |
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128 VariableRef<out result>
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129 |
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130 StringLiteral<out result>
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131 |
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132 NumericLiteral<out result>
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133 |
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134 "(" Expression<out result> ")"
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135 )
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136 .
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137
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138 TimeRef<out TypedNode result>
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139 =
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140 "time" (. result = factory.createTime(); .)
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141 .
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142
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143 VariableRef<out TypedNode result>
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144 =
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145 identifier (. result = factory.createLocal(t.val); .)
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146 .
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147
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148 StringLiteral<out TypedNode result>
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149 =
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150 stringLiteral (. result = factory.createStringLiteral(t.val.substring(1, t.val.length() - 1)); .)
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151 .
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152
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153 NumericLiteral<out TypedNode result>
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154 =
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155 numericLiteral (. result = factory.createNumericLiteral(t.val); .)
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156 .
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157
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158 END SimpleLanguage.