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annotate graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/expression/DSLExpression.java @ 19283:08aa0372dad4

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Truffle-DSL: implement new guard expression syntax.
author Christian Humer <christian.humer@gmail.com>
date Fri, 23 Jan 2015 02:55:23 +0100
parents
children 62c43fcf5be2
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19283
08aa0372dad4 Truffle-DSL: implement new guard expression syntax.
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1 /*
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2 * Copyright (c) 2015, 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 package com.oracle.truffle.dsl.processor.expression;
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24
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25 import java.util.*;
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26
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27 import javax.lang.model.element.*;
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28 import javax.lang.model.type.*;
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29
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30 public abstract class DSLExpression {
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31
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32 private DSLExpression() {
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33 }
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34
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35 public static DSLExpression parse(String input) {
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36 return Parser.parse(input);
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37 }
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38
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39 public final List<Variable> findBoundVariables() {
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40 final List<Variable> variables = new ArrayList<>();
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41 this.accept(new AbstractDSLExpressionVisitor() {
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42
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43 @Override
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44 public void visitVariable(Variable variable) {
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45 if (variable.getReceiver() == null) {
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46 variables.add(variable);
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47 }
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48 }
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49
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50 });
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51 return variables;
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52 }
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53
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54 public final boolean isVariableBound(VariableElement variableElement) {
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55 for (Variable variable : findBoundVariables()) {
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56 if (variable.getResolvedVariable() == variableElement) {
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57 return true;
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58 }
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59 }
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60 return false;
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61 }
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62
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63 public abstract TypeMirror getResolvedType();
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64
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65 public abstract void accept(DSLExpressionVisitor visitor);
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66
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67 public static final class Negate extends DSLExpression {
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68
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69 private final DSLExpression receiver;
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70
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71 public Negate(DSLExpression receiver) {
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72 this.receiver = receiver;
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73 }
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74
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75 @Override
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76 public void accept(DSLExpressionVisitor visitor) {
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77 receiver.accept(visitor);
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78 visitor.visitNegate(this);
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79 }
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80
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81 public DSLExpression getReceiver() {
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82 return receiver;
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83 }
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84
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85 @Override
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86 public TypeMirror getResolvedType() {
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87 return receiver.getResolvedType();
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88 }
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89
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90 @Override
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91 public boolean equals(Object obj) {
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92 if (obj instanceof Negate) {
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93 return receiver.equals(((Negate) obj).receiver);
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94 }
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95 return false;
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96 }
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97
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98 @Override
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99 public int hashCode() {
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100 return receiver.hashCode();
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101 }
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102 }
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103
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104 public static final class Binary extends DSLExpression {
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105
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106 private final String operator;
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107 private final DSLExpression left;
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108 private final DSLExpression right;
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109
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110 private TypeMirror resolvedType;
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111
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112 public Binary(String operator, DSLExpression left, DSLExpression right) {
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113 this.operator = operator;
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114 this.left = left;
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115 this.right = right;
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116 }
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117
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118 @Override
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119 public boolean equals(Object obj) {
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120 if (obj instanceof Binary) {
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121 Binary other = (Binary) obj;
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122 return operator.equals(other.operator) && left.equals(other.left) && right.equals(other.right);
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123 }
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124 return false;
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125 }
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126
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127 @Override
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128 public int hashCode() {
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129 return Objects.hash(operator, left, right);
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130 }
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131
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132 public String getOperator() {
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133 return operator;
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134 }
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135
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136 public DSLExpression getLeft() {
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137 return left;
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138 }
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139
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140 public DSLExpression getRight() {
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141 return right;
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142 }
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143
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144 @Override
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145 public void accept(DSLExpressionVisitor visitor) {
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146 left.accept(visitor);
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147 right.accept(visitor);
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148 visitor.visitBinary(this);
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149 }
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150
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151 @Override
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152 public TypeMirror getResolvedType() {
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153 return resolvedType;
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154 }
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155
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156 public void setResolvedType(TypeMirror resolvedType) {
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157 this.resolvedType = resolvedType;
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158 }
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159
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160 @Override
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161 public String toString() {
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162 return "Binary [left=" + left + ", operator=" + operator + ", right=" + right + ", resolvedType=" + resolvedType + "]";
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163 }
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164
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165 }
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166
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167 public static final class Call extends DSLExpression {
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168
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169 private final DSLExpression receiver;
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170 private final String name;
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171 private final List<DSLExpression> parameters;
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172
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173 private ExecutableElement resolvedMethod;
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174
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175 public Call(DSLExpression receiver, String name, List<DSLExpression> parameters) {
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176 this.receiver = receiver;
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177 this.name = name;
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178 this.parameters = parameters;
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179 }
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180
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181 @Override
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182 public boolean equals(Object obj) {
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183 if (obj instanceof Call) {
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184 Call other = (Call) obj;
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185 return Objects.equals(receiver, other.receiver) && name.equals(other.name) && parameters.equals(other.parameters);
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186 }
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187 return false;
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188 }
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189
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190 @Override
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191 public int hashCode() {
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192 return Objects.hash(receiver, name, parameters);
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193 }
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194
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195 public DSLExpression getReceiver() {
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196 return receiver;
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197 }
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198
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199 public String getName() {
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200 return name;
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201 }
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202
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203 public List<DSLExpression> getParameters() {
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204 return parameters;
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205 }
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206
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207 @Override
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208 public void accept(DSLExpressionVisitor visitor) {
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209 if (receiver != null) {
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210 receiver.accept(visitor);
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211 }
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212 for (DSLExpression parameter : getParameters()) {
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213 parameter.accept(visitor);
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214 }
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215 visitor.visitCall(this);
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216 }
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217
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218 @Override
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219 public TypeMirror getResolvedType() {
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220 return resolvedMethod != null ? resolvedMethod.getReturnType() : null;
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221 }
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222
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223 public ExecutableElement getResolvedMethod() {
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224 return resolvedMethod;
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225 }
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226
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227 public void setResolvedMethod(ExecutableElement resolvedMethod) {
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228 this.resolvedMethod = resolvedMethod;
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229 }
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230
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231 @Override
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232 public String toString() {
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233 return "Call [receiver=" + receiver + ", name=" + name + ", parameters=" + parameters + ", resolvedMethod=" + resolvedMethod + "]";
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234 }
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235
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236 }
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237
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238 public static final class Variable extends DSLExpression {
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239
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240 private final DSLExpression receiver;
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241 private final String name;
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242
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243 private VariableElement resolvedVariable;
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244
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245 public Variable(DSLExpression receiver, String name) {
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246 this.receiver = receiver;
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247 this.name = name;
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248 }
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249
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250 @Override
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251 public boolean equals(Object obj) {
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252 if (obj instanceof Variable) {
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253 Variable other = (Variable) obj;
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254 return Objects.equals(receiver, other.receiver) && name.equals(other.name);
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255 }
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256 return false;
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257 }
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258
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259 @Override
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260 public int hashCode() {
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261 return Objects.hash(receiver, name);
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262 }
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263
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264 public DSLExpression getReceiver() {
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265 return receiver;
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266 }
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267
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268 public String getName() {
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269 return name;
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270 }
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271
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272 @Override
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273 public void accept(DSLExpressionVisitor visitor) {
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274 if (receiver != null) {
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275 receiver.accept(visitor);
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276 }
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277 visitor.visitVariable(this);
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278 }
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279
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280 @Override
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281 public TypeMirror getResolvedType() {
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282 return resolvedVariable != null ? resolvedVariable.asType() : null;
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283 }
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284
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285 public void setResolvedVariable(VariableElement resolvedVariable) {
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286 this.resolvedVariable = resolvedVariable;
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287 }
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288
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289 public VariableElement getResolvedVariable() {
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290 return resolvedVariable;
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291 }
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292
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293 @Override
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294 public String toString() {
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295 return "Variable [receiver=" + receiver + ", name=" + name + ", resolvedVariable=" + resolvedVariable + "]";
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296 }
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297
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298 }
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299
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300 public static final class IntLiteral extends DSLExpression {
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301
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302 private final String literal;
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303
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304 private int resolvedValueInt;
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305 private TypeMirror resolvedType;
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306
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307 public IntLiteral(String literal) {
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308 this.literal = literal;
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309 }
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310
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311 @Override
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312 public boolean equals(Object obj) {
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313 if (obj instanceof IntLiteral) {
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314 IntLiteral other = (IntLiteral) obj;
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315 return resolvedValueInt == other.resolvedValueInt;
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316 }
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317 return false;
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318 }
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319
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320 @Override
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321 public int hashCode() {
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322 return resolvedValueInt;
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323 }
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324
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325 public String getLiteral() {
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326 return literal;
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327 }
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328
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329 public int getResolvedValueInt() {
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330 return resolvedValueInt;
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331 }
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332
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333 public void setResolvedValueInt(int resolved) {
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334 this.resolvedValueInt = resolved;
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335 }
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336
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337 @Override
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338 public TypeMirror getResolvedType() {
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339 return resolvedType;
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340 }
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341
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342 public void setResolvedType(TypeMirror resolvedType) {
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343 this.resolvedType = resolvedType;
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344 }
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345
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346 @Override
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347 public void accept(DSLExpressionVisitor visitor) {
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348 visitor.visitIntLiteral(this);
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349 }
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350
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351 @Override
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352 public String toString() {
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353 return "IntLiteral [literal=" + literal + ", resolvedValueInt=" + resolvedValueInt + ", resolvedType=" + resolvedType + "]";
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354 }
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355
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356 }
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357
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358 public abstract class AbstractDSLExpressionVisitor implements DSLExpressionVisitor {
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359
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360 public void visitBinary(Binary binary) {
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361 }
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362
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363 public void visitCall(Call binary) {
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364 }
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365
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366 public void visitIntLiteral(IntLiteral binary) {
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367 }
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368
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369 public void visitNegate(Negate negate) {
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370 }
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371
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372 public void visitVariable(Variable binary) {
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373 }
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374 }
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375
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376 public interface DSLExpressionVisitor {
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377
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378 void visitBinary(Binary binary);
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379
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380 void visitNegate(Negate negate);
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381
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382 void visitCall(Call binary);
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383
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384 void visitVariable(Variable binary);
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385
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386 void visitIntLiteral(IntLiteral binary);
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387
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388 }
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389
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390 }