annotate graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/template/TemplateMethod.java @ 10600:e93efe3ba5f4

Truffle-DSL: rewritten polymorphic optimization for simpler generated code.
author Christian Humer <christian.humer@gmail.com>
date Tue, 02 Jul 2013 14:51:05 +0200
parents 79041ab43660
children b8fe1fe004ec
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1 /*
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2 * Copyright (c) 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 package com.oracle.truffle.dsl.processor.template;
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25 import java.util.*;
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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 import com.oracle.truffle.dsl.processor.*;
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31 import com.oracle.truffle.dsl.processor.template.TemplateMethod.Signature;
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32 import com.oracle.truffle.dsl.processor.typesystem.*;
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33
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34 /**
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35 * Note: this class has a natural ordering that is inconsistent with equals.
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36 */
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37 public class TemplateMethod extends MessageContainer implements Comparable<TemplateMethod> {
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38
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39 private String id;
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40 private final Template template;
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41 private final MethodSpec specification;
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42 private final ExecutableElement method;
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43 private final AnnotationMirror markerAnnotation;
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44 private ActualParameter returnType;
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45 private List<ActualParameter> parameters;
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46
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47 public TemplateMethod(String id, Template template, MethodSpec specification, ExecutableElement method, AnnotationMirror markerAnnotation, ActualParameter returnType,
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48 List<ActualParameter> parameters) {
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49 this.template = template;
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50 this.specification = specification;
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51 this.method = method;
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52 this.markerAnnotation = markerAnnotation;
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53 this.returnType = returnType;
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54 this.parameters = new ArrayList<>();
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55 for (ActualParameter param : parameters) {
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56 ActualParameter newParam = new ActualParameter(param);
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57 this.parameters.add(newParam);
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58 newParam.setMethod(this);
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59 }
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60 this.id = id;
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61 }
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62
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63 public TemplateMethod(TemplateMethod method) {
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64 this(method.id, method.template, method.specification, method.method, method.markerAnnotation, method.returnType, method.parameters);
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65 getMessages().addAll(method.getMessages());
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66 }
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67
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68 public TemplateMethod(TemplateMethod method, ExecutableElement executable) {
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69 this(method.id, method.template, method.specification, executable, method.markerAnnotation, method.returnType, method.parameters);
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70 getMessages().addAll(method.getMessages());
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71 }
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72
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73 public void setParameters(List<ActualParameter> parameters) {
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74 this.parameters = parameters;
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75 }
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76
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77 @Override
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78 public Element getMessageElement() {
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79 return method;
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80 }
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81
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82 @Override
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83 public AnnotationMirror getMessageAnnotation() {
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84 return markerAnnotation;
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85 }
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86
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87 @Override
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88 protected List<MessageContainer> findChildContainers() {
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89 return Collections.emptyList();
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90 }
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91
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92 public void setId(String id) {
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93 this.id = id;
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94 }
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95
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96 public String getId() {
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97 return id;
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98 }
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99
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100 public Template getTemplate() {
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101 return template;
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102 }
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103
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104 public MethodSpec getSpecification() {
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105 return specification;
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106 }
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107
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108 public ActualParameter getReturnType() {
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109 return returnType;
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110 }
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111
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112 public void replaceParameter(String localName, ActualParameter newParameter) {
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113 if (returnType.getLocalName().equals(localName)) {
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114 returnType = newParameter;
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115 returnType.setMethod(this);
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116 }
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117
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118 for (ListIterator<ActualParameter> iterator = parameters.listIterator(); iterator.hasNext();) {
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119 ActualParameter parameter = iterator.next();
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120 if (parameter.getLocalName().equals(localName)) {
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121 iterator.set(newParameter);
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122 newParameter.setMethod(this);
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123 }
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124 }
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125 }
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126
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127 public List<ActualParameter> getRequiredParameters() {
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128 List<ActualParameter> requiredParameters = new ArrayList<>();
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129 for (ActualParameter parameter : getParameters()) {
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130 if (getSpecification().getRequired().contains(parameter.getSpecification())) {
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131 requiredParameters.add(parameter);
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132 }
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133 }
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134 return requiredParameters;
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135 }
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136
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137 public List<ActualParameter> getParameters() {
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138 return parameters;
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139 }
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140
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141 public List<ActualParameter> findParameters(ParameterSpec spec) {
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142 List<ActualParameter> foundParameters = new ArrayList<>();
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143 for (ActualParameter param : getReturnTypeAndParameters()) {
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144 if (param.getSpecification().equals(spec)) {
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145 foundParameters.add(param);
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146 }
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147 }
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148 return foundParameters;
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149 }
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150
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151 public ActualParameter findParameter(String valueName) {
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152 for (ActualParameter param : getReturnTypeAndParameters()) {
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153 if (param.getLocalName().equals(valueName)) {
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154 return param;
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155 }
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156 }
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157 return null;
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158 }
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159
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160 public List<ActualParameter> getReturnTypeAndParameters() {
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161 List<ActualParameter> allParameters = new ArrayList<>(getParameters().size() + 1);
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162 if (getReturnType() != null) {
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163 allParameters.add(getReturnType());
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164 }
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165 allParameters.addAll(getParameters());
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166 return Collections.unmodifiableList(allParameters);
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167 }
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168
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169 public boolean canBeAccessedByInstanceOf(ProcessorContext context, TypeMirror type) {
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170 TypeMirror methodType = Utils.findNearestEnclosingType(getMethod()).asType();
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171 return Utils.isAssignable(context, type, methodType) || Utils.isAssignable(context, methodType, type);
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172 }
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173
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174 public ExecutableElement getMethod() {
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175 return method;
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176 }
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177
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178 public String getMethodName() {
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179 if (getMethod() != null) {
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180 return getMethod().getSimpleName().toString();
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181 } else {
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182 return "$synthetic";
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183 }
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184 }
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185
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186 public AnnotationMirror getMarkerAnnotation() {
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187 return markerAnnotation;
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188 }
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189
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190 @Override
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191 public String toString() {
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192 return String.format("%s [id = %s, method = %s]", getClass().getSimpleName(), getId(), getMethod());
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193 }
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194
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195 public ActualParameter getPreviousParam(ActualParameter searchParam) {
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196 ActualParameter prev = null;
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197 for (ActualParameter param : getParameters()) {
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198 if (param == searchParam) {
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199 return prev;
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200 }
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201 prev = param;
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202 }
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203 return prev;
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204 }
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205
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206 public Signature getSignature() {
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207 Signature signature = new Signature();
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208 for (ActualParameter parameter : getReturnTypeAndParameters()) {
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209 if (!parameter.getSpecification().isSignature()) {
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210 continue;
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211 }
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212 TypeData typeData = parameter.getTypeSystemType();
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213 if (typeData != null) {
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214 signature.types.add(typeData);
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215 }
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216 }
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217 return signature;
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218 }
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219
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220 public void updateSignature(Signature signature) {
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221 assert signature.size() >= 1;
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222 int signatureIndex = 0;
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223 for (ActualParameter parameter : getReturnTypeAndParameters()) {
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224 if (!parameter.getSpecification().isSignature()) {
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225 continue;
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226 }
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227 TypeData newType = signature.get(signatureIndex++);
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228 if (!parameter.getTypeSystemType().equals(newType)) {
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229 replaceParameter(parameter.getLocalName(), new ActualParameter(parameter, newType));
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230 }
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231 }
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232 }
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233
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234 @Override
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235 public int compareTo(TemplateMethod o) {
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236 if (this == o) {
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237 return 0;
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238 }
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239
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240 int compare = compareBySignature(o);
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241 if (compare == 0) {
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242 // if signature sorting failed sort by id
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243 compare = getId().compareTo(o.getId());
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244 }
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245 if (compare == 0) {
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246 // if still no difference sort by enclosing type name
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247 TypeElement enclosingType1 = Utils.findNearestEnclosingType(getMethod());
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248 TypeElement enclosingType2 = Utils.findNearestEnclosingType(o.getMethod());
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249 compare = enclosingType1.getQualifiedName().toString().compareTo(enclosingType2.getQualifiedName().toString());
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250 }
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251 return compare;
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252 }
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253
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254 public List<ActualParameter> getParametersAfter(ActualParameter genericParameter) {
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255 boolean found = false;
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256 List<ActualParameter> foundParameters = new ArrayList<>();
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257 for (ActualParameter param : getParameters()) {
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258 if (param.getLocalName().equals(genericParameter.getLocalName())) {
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259 found = true;
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260 } else if (found) {
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261 foundParameters.add(param);
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262 }
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263 }
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264 return foundParameters;
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265 }
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266
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267 public int compareBySignature(TemplateMethod compareMethod) {
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268 TypeSystemData typeSystem = getTemplate().getTypeSystem();
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269 if (typeSystem != compareMethod.getTemplate().getTypeSystem()) {
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270 throw new IllegalStateException("Cannot compare two methods with different type systems.");
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271 }
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272
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273 Signature signature1 = getSignature();
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274 Signature signature2 = compareMethod.getSignature();
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275 if (signature1.size() != signature2.size()) {
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276 return signature2.size() - signature1.size();
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277 }
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278
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279 int result = 0;
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280 for (int i = 1; i < signature1.size(); i++) {
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281 int typeResult = compareActualParameter(typeSystem, signature1.get(i), signature2.get(i));
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282 if (result == 0) {
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283 result = typeResult;
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284 } else if (typeResult != 0 && Math.signum(result) != Math.signum(typeResult)) {
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285 // We cannot define an order.
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286 return 0;
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287 }
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288 }
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289 if (result == 0 && signature1.size() > 0) {
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290 result = compareActualParameter(typeSystem, signature1.get(0), signature2.get(0));
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291 }
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292
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293 return result;
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294 }
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295
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296 private static int compareActualParameter(TypeSystemData typeSystem, TypeData t1, TypeData t2) {
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297 int index1 = typeSystem.findType(t1);
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298 int index2 = typeSystem.findType(t2);
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299 return index1 - index2;
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300 }
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301
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302 public static class Signature implements Iterable<TypeData>, Comparable<Signature> {
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303
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304 final List<TypeData> types;
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305
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306 public Signature() {
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307 this.types = new ArrayList<>();
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308 }
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309
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310 public Signature(List<TypeData> signature) {
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311 this.types = signature;
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312 }
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313
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314 @Override
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315 public int hashCode() {
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316 return types.hashCode();
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317 }
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318
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319 public int size() {
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320 return types.size();
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321 }
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322
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323 public TypeData get(int index) {
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324 return types.get(index);
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325 }
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326
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327 public int compareTo(Signature other) {
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328 if (this == other) {
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329 return 0;
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330 } else if (types.size() != other.types.size()) {
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331 return types.size() - other.types.size();
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332 } else if (types.isEmpty()) {
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333 return 0;
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334 }
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335
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336 for (int i = 0; i < types.size(); i++) {
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337 TypeData type1 = types.get(i);
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338 TypeData type2 = other.types.get(i);
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339
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340 int comparison = type1.compareTo(type2);
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341 if (comparison != 0) {
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342 return comparison;
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343 }
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344 }
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345
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346 return 0;
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347 }
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348
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349 public Signature combine(Signature genericSignature, Signature other) {
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350 assert types.size() == other.types.size();
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351 assert genericSignature.types.size() == other.types.size();
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352
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353 if (this.equals(other)) {
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354 return this;
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355 }
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356
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357 Signature signature = new Signature();
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358 for (int i = 0; i < types.size(); i++) {
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359 TypeData type1 = types.get(i);
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360 TypeData type2 = other.types.get(i);
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361 if (type1.equals(type2)) {
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362 signature.types.add(type1);
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363 } else {
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364 signature.types.add(genericSignature.types.get(i));
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365 }
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366 }
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367 return signature;
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368 }
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369
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370 @Override
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371 public boolean equals(Object obj) {
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372 if (obj instanceof Signature) {
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373 return ((Signature) obj).types.equals(types);
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374 }
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375 return super.equals(obj);
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376 }
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377
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378 public Iterator<TypeData> iterator() {
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379 return types.iterator();
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380 }
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381
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382 @Override
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383 public String toString() {
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384 return types.toString();
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385 }
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386
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387 public boolean hasAnyParameterMatch(Signature other) {
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388 for (int i = 1; i < types.size(); i++) {
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389 TypeData type1 = types.get(i);
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390 TypeData type2 = other.types.get(i);
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diff changeset
391 if (type1.equals(type2)) {
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392 return true;
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393 }
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394 }
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395 return false;
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396 }
10600
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397
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398 public boolean isCompatibleTo(Signature signature) {
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399 if (size() != signature.size()) {
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400 return false;
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401 }
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diff changeset
402
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403 for (int i = 0; i < size(); i++) {
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diff changeset
404 TypeData o1 = get(i);
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diff changeset
405 TypeData o2 = signature.get(i);
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diff changeset
406 if (o1.equals(o2)) {
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diff changeset
407 continue;
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diff changeset
408 } else if (o2.isGeneric()) {
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diff changeset
409 continue;
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diff changeset
410 } else {
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diff changeset
411 return false;
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diff changeset
412 }
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diff changeset
413 }
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diff changeset
414 return true;
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diff changeset
415 }
10597
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416 }
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diff changeset
417
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diff changeset
418 }