author | jlahoda |
Mon, 01 Apr 2019 14:46:17 +0200 | |
branch | jlahoda-tree-builder |
changeset 57298 | 72d5f7163f12 |
parent 57297 | ad0be596956b |
child 57300 | c79e191854e4 |
permissions | -rw-r--r-- |
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A first very crude experiment on a tree builder for javac.
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/* |
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* Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/package com.sun.tools.javac.api; |
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import java.nio.CharBuffer; |
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import java.util.function.Consumer; |
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import java.util.function.Function; |
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|
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import javax.tools.JavaFileObject; |
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|
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import com.sun.source.doctree.DocTree; |
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import com.sun.source.tree.CompilationUnitTree; |
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import com.sun.source.util.TreeBuilder; |
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import com.sun.tools.javac.code.TypeTag; |
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import com.sun.tools.javac.tree.JCTree; |
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import com.sun.tools.javac.tree.JCTree.JCClassDecl; |
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import com.sun.tools.javac.tree.JCTree.JCCompilationUnit; |
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import com.sun.tools.javac.tree.JCTree.JCExpression; |
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import com.sun.tools.javac.tree.JCTree.JCMethodDecl; |
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import com.sun.tools.javac.tree.JCTree.JCVariableDecl; |
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import com.sun.tools.javac.tree.JCTree.Tag; |
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import com.sun.tools.javac.tree.TreeMaker; |
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import com.sun.tools.javac.util.List; |
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import com.sun.tools.javac.main.JavaCompiler; |
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import com.sun.tools.javac.parser.Parser; |
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import com.sun.tools.javac.parser.ParserFactory; |
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import com.sun.tools.javac.tree.JCTree.JCBlock; |
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import com.sun.tools.javac.tree.JCTree.JCStatement; |
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import com.sun.tools.javac.util.JCDiagnostic; |
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import com.sun.tools.javac.util.Log.DiagnosticHandler; |
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import com.sun.tools.javac.util.Names; |
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/** |
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* Implementation for TreeBuilder. |
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* Note: this is only a crude experiment. |
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*/ |
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public class TreeBuilderImpl implements TreeBuilder { |
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private final JavaCompiler compiler; |
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private final ParserFactory parserFactory; |
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private final TreeMaker make; |
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private final Names names; |
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public TreeBuilderImpl(JavaCompiler compiler, ParserFactory parserFactory, TreeMaker make, Names names) { |
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this.compiler = compiler; |
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this.parserFactory = parserFactory; |
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this.make = make; |
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this.names = names; |
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} |
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@Override |
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public CompilationUnitTree createCompilationUnitTree(Consumer<CompilationUnit> unit) { |
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CompilationUnitImpl cui = new CompilationUnitImpl(); |
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unit.accept(cui); |
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return cui.result; |
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} |
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private final class CompilationUnitImpl implements CompilationUnit { |
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private final JCCompilationUnit result; |
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public CompilationUnitImpl() { |
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this.result = make.TopLevel(List.nil()); |
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} |
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@Override |
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public CompilationUnit _package(String... qname) { |
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JCExpression qualIdent = make.Ident(names.fromString(qname[0])); //XXX: should check qname.length > 0! |
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for (int i = 1; i < qname.length; i++) { |
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qualIdent = make.Select(qualIdent, names.fromString(qname[i])); |
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} |
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result.defs = result.defs.stream().filter(t -> !t.hasTag(Tag.PACKAGEDEF)).collect(List.collector()) //XXX: what should be the behavior if already filled? |
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.prepend(make.PackageDecl(List.nil(), qualIdent)); |
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return this; |
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} |
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@Override |
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public CompilationUnit _class(String name, Consumer<Class> clazz) { |
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ClassImpl ci = new ClassImpl(name); |
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clazz.accept(ci); |
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result.defs = result.defs.append(ci.result); |
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return this; |
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} |
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} |
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private final class ClassImpl implements Class { |
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private final JCClassDecl result; |
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public ClassImpl(String name) { |
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this.result = make.ClassDef(make.Modifiers(0), names.fromString(name), List.nil(), null, List.nil(), List.nil()); |
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} |
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@Override |
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public Class superclass(Consumer<Type> sup) { |
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result.extending = visitType(sup); //TODO: check extending not filled! |
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return this; |
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} |
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@Override |
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public Class superinterface(Consumer<Type> sup) { |
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result.implementing = result.implementing.append(visitType(sup)); |
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return this; |
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} |
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@Override |
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public Class field(String name, Consumer<Type> type, Consumer<Variable> field) { |
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TypeImpl ti = new TypeImpl(); |
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type.accept(ti); |
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if (ti.type == null) { |
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throw new IllegalStateException("Type not provided!"); |
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} |
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VariableImpl vi = new VariableImpl(ti.type, name); |
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field.accept(vi); |
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result.defs = result.defs.append(vi.result); |
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return this; |
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} |
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141 |
|
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142 |
@Override |
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143 |
public Class method(String name, Consumer<Type> restype, Consumer<Method> method) { |
57297 | 144 |
TypeImpl ti = new TypeImpl(); |
145 |
restype.accept(ti); |
|
146 |
if (ti.type == null) { |
|
147 |
throw new IllegalStateException("Type not provided!"); |
|
148 |
} |
|
149 |
MethodImpl vi = new MethodImpl(ti.type, name); |
|
150 |
method.accept(vi); |
|
151 |
result.defs = result.defs.append(vi.result); |
|
152 |
return this; |
|
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} |
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154 |
|
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155 |
@Override |
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156 |
public Class _class(String name, Consumer<Class> clazz) { |
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throw new UnsupportedOperationException("Not supported yet."); |
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} |
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159 |
|
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160 |
@Override |
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161 |
public Class modifiers(Consumer<Modifiers> modifiers) { |
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162 |
throw new UnsupportedOperationException("Not supported yet."); |
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163 |
} |
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164 |
|
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165 |
@Override |
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166 |
public Class javadoc(DocTree doc) { |
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167 |
throw new UnsupportedOperationException("Not supported yet."); |
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168 |
} |
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169 |
|
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170 |
@Override |
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171 |
public Class javadoc(String doc) { |
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172 |
throw new UnsupportedOperationException("Not supported yet."); |
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173 |
} |
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|
174 |
|
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175 |
} |
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176 |
|
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177 |
private final class TypeImpl implements Type { |
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178 |
|
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179 |
private JCExpression type; |
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180 |
|
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181 |
@Override |
57296 | 182 |
public void _class(Consumer<QualifiedName> className, Consumer<TypeArguments> typeArguments) { |
183 |
JCExpression clazz = visitQualifiedName(className); |
|
184 |
TypeArgumentsImpl ta = new TypeArgumentsImpl(); |
|
185 |
typeArguments.accept(ta); |
|
186 |
if (ta.types.isEmpty()) { |
|
187 |
type = clazz; |
|
188 |
} else { |
|
189 |
type = make.TypeApply(clazz, ta.types); |
|
190 |
} |
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191 |
} |
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192 |
|
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|
193 |
@Override |
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194 |
public void _int() { |
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195 |
//XXX: check empty! |
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196 |
type = make.TypeIdent(TypeTag.INT); |
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197 |
} |
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|
198 |
|
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|
199 |
@Override |
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200 |
public void _float() { |
97aaf02ed830
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|
201 |
throw new UnsupportedOperationException("Not supported yet."); |
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|
202 |
} |
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A first very crude experiment on a tree builder for javac.
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|
203 |
|
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|
204 |
@Override |
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|
205 |
public void _void() { |
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|
206 |
throw new UnsupportedOperationException("Not supported yet."); |
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|
207 |
} |
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|
208 |
|
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209 |
@Override |
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210 |
public void type(String typeSpec) { |
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type = parse(typeSpec, Parser::parseType); |
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212 |
} |
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213 |
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214 |
} |
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|
216 |
private final class TypeArgumentsImpl implements TypeArguments { |
|
217 |
private List<JCExpression> types = List.nil(); |
|
218 |
@Override |
|
219 |
public TypeArguments type(Consumer<Type> t) { |
|
220 |
TypeImpl type = new TypeImpl(); |
|
221 |
t.accept(type); |
|
222 |
types = types.append(type.type); |
|
223 |
return this; |
|
224 |
} |
|
225 |
} |
|
226 |
||
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227 |
private final class VariableImpl implements Variable { |
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228 |
|
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229 |
private final JCVariableDecl result; |
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230 |
|
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231 |
public VariableImpl(JCExpression type, String name) { |
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232 |
result = make.VarDef(make.Modifiers(0), names.fromString(name), type, null); |
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233 |
} |
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|
234 |
|
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|
235 |
@Override |
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236 |
public Variable init(Consumer<Expression> init) { |
57296 | 237 |
result.init = visitExpression(init); |
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return this; |
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|
239 |
} |
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|
240 |
|
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|
241 |
@Override |
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242 |
public Variable modifiers(Consumer<Modifiers> modifiers) { |
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|
243 |
throw new UnsupportedOperationException("Not supported yet."); |
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|
244 |
} |
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|
245 |
|
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|
246 |
@Override |
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|
247 |
public Variable javadoc(DocTree doc) { |
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|
248 |
throw new UnsupportedOperationException("Not supported yet."); |
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|
249 |
} |
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|
250 |
|
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|
251 |
@Override |
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|
252 |
public Variable javadoc(String doc) { |
97aaf02ed830
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|
253 |
throw new UnsupportedOperationException("Not supported yet."); |
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|
254 |
} |
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|
255 |
|
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|
256 |
} |
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257 |
|
57297 | 258 |
private final class MethodImpl implements Method { |
259 |
||
260 |
private final JCMethodDecl result; |
|
261 |
||
262 |
public MethodImpl(JCExpression restype, String name) { |
|
263 |
result = make.MethodDef(make.Modifiers(0), names.fromString(name), restype, List.nil(), List.nil(), List.nil(), null, null); |
|
264 |
} |
|
265 |
||
266 |
@Override |
|
267 |
public Method parameter(Consumer<Type> type, Consumer<Parameter> parameter) { |
|
268 |
ParameterImpl paramImpl = new ParameterImpl(visitType(type)); |
|
269 |
parameter.accept(paramImpl); |
|
270 |
result.params = result.params.append(paramImpl.result); |
|
271 |
return this; |
|
272 |
} |
|
273 |
||
274 |
@Override |
|
275 |
public Method body(Consumer<Block> statements) { |
|
276 |
BlockImpl block = new BlockImpl(); |
|
277 |
statements.accept(block); |
|
278 |
result.body = make.Block(0, block.statements); |
|
279 |
return this; |
|
280 |
} |
|
281 |
||
282 |
@Override |
|
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283 |
public Method body(String body) { |
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|
284 |
JCStatement parsedBody = parse(body, Parser::parseStatement); |
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|
285 |
if (!parsedBody.hasTag(Tag.BLOCK)) { |
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286 |
throw new IllegalArgumentException("Block not provided!"); |
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|
287 |
} |
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288 |
result.body = (JCBlock) parsedBody; |
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|
289 |
return this; |
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|
290 |
} |
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|
291 |
|
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|
292 |
@Override |
57297 | 293 |
public Method modifiers(Consumer<Modifiers> modifiers) { |
294 |
throw new UnsupportedOperationException("Not supported yet."); |
|
295 |
} |
|
296 |
||
297 |
@Override |
|
298 |
public Method javadoc(DocTree doc) { |
|
299 |
throw new UnsupportedOperationException("Not supported yet."); |
|
300 |
} |
|
301 |
||
302 |
@Override |
|
303 |
public Method javadoc(String doc) { |
|
304 |
throw new UnsupportedOperationException("Not supported yet."); |
|
305 |
} |
|
306 |
||
307 |
} |
|
308 |
||
309 |
private final class ParameterImpl implements Parameter { |
|
310 |
||
311 |
private final JCVariableDecl result; |
|
312 |
||
313 |
public ParameterImpl(JCExpression type) { |
|
314 |
//TODO: infer name |
|
315 |
result = make.VarDef(make.Modifiers(0), null, type, null); |
|
316 |
} |
|
317 |
||
318 |
@Override |
|
319 |
public Parameter modifiers(Consumer<Modifiers> modifiers) { |
|
320 |
throw new UnsupportedOperationException("Not supported yet."); |
|
321 |
} |
|
322 |
||
323 |
@Override |
|
324 |
public Parameter name(String name) { |
|
325 |
result.name = names.fromString(name); //XXX: check not set yet. |
|
326 |
return this; |
|
327 |
} |
|
328 |
||
329 |
} |
|
330 |
||
331 |
private final class BlockImpl extends StatementBaseImpl<Block> implements Block { |
|
332 |
||
333 |
private List<JCStatement> statements = List.nil(); |
|
334 |
||
335 |
@Override |
|
336 |
protected Block addStatement(JCStatement stat) { |
|
337 |
statements = statements.append(stat); |
|
338 |
return this; |
|
339 |
} |
|
340 |
||
341 |
} |
|
342 |
||
343 |
private final class StatementImpl extends StatementBaseImpl<Void> implements Statement { |
|
344 |
private JCStatement result; |
|
345 |
||
346 |
@Override |
|
347 |
protected Void addStatement(JCStatement stat) { |
|
348 |
if (result != null) { |
|
349 |
throw new IllegalStateException(); |
|
350 |
} |
|
351 |
result = stat; |
|
352 |
return null; |
|
353 |
} |
|
354 |
} |
|
355 |
||
356 |
private abstract class StatementBaseImpl<S> implements StatementBase<S> { |
|
357 |
||
358 |
@Override |
|
359 |
public S _if(Consumer<Expression> cond, Consumer<Statement> ifPart) { |
|
360 |
JCExpression expr = visitExpression(cond); |
|
361 |
//TODO: should this automatic wrapping with parenthesized be here? |
|
362 |
expr = make.Parens(expr); |
|
363 |
StatementImpl ifStatement = new StatementImpl(); |
|
364 |
ifPart.accept(ifStatement); |
|
365 |
//TODO: check ifPart filled! |
|
366 |
return addStatement(make.If(expr, ifStatement.result, null)); |
|
367 |
} |
|
368 |
||
369 |
@Override |
|
370 |
public S _if(Consumer<Expression> cond, Consumer<Statement> ifPart, Consumer<Statement> elsePart) { |
|
371 |
JCExpression expr = visitExpression(cond); |
|
372 |
//TODO: should this automatic wrapping with parenthesized be here? |
|
373 |
expr = make.Parens(expr); |
|
374 |
StatementImpl ifStatement = new StatementImpl(); |
|
375 |
ifPart.accept(ifStatement); |
|
376 |
//TODO: check ifPart filled! |
|
377 |
StatementImpl elseStatement = new StatementImpl(); |
|
378 |
elsePart.accept(elseStatement); |
|
379 |
return addStatement(make.If(expr, ifStatement.result, elseStatement.result)); |
|
380 |
} |
|
381 |
||
382 |
@Override |
|
383 |
public S _return() { |
|
384 |
throw new UnsupportedOperationException("Not supported yet."); |
|
385 |
} |
|
386 |
||
387 |
@Override |
|
388 |
public S _return(Consumer<Expression> expr) { |
|
389 |
return addStatement(make.Return(visitExpression(expr))); |
|
390 |
} |
|
391 |
||
392 |
@Override |
|
393 |
public S expr(Consumer<Expression> expr) { |
|
394 |
throw new UnsupportedOperationException("Not supported yet."); |
|
395 |
} |
|
396 |
||
397 |
@Override |
|
398 |
public S skip() { |
|
399 |
throw new UnsupportedOperationException("Not supported yet."); |
|
400 |
} |
|
401 |
||
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|
402 |
@Override |
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|
403 |
public S statement(String statement) { |
72d5f7163f12
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|
404 |
return addStatement(parse(statement, Parser::parseStatement)); |
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changeset
|
405 |
} |
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Adding ability to supply code as text instead of Trees on some places.
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406 |
|
57297 | 407 |
protected abstract S addStatement(JCStatement stat); |
408 |
} |
|
409 |
||
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Adding a prototype of CodeBuilder to build a sequence of TreeBuilder calls to construct a given AST.
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|
410 |
private final class ExpressionImpl implements Expression { |
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Adding a prototype of CodeBuilder to build a sequence of TreeBuilder calls to construct a given AST.
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|
411 |
|
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Adding a prototype of CodeBuilder to build a sequence of TreeBuilder calls to construct a given AST.
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|
412 |
private JCExpression expr; |
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Adding a prototype of CodeBuilder to build a sequence of TreeBuilder calls to construct a given AST.
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changeset
|
413 |
|
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Adding a prototype of CodeBuilder to build a sequence of TreeBuilder calls to construct a given AST.
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parents:
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changeset
|
414 |
@Override |
57297 | 415 |
public void equal_to(Consumer<Expression> lhs, Consumer<Expression> rhs) { |
416 |
expr = make.Binary(Tag.EQ, |
|
417 |
visitExpression(lhs), |
|
418 |
visitExpression(rhs)); |
|
419 |
} |
|
420 |
||
421 |
@Override |
|
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Adding a prototype of CodeBuilder to build a sequence of TreeBuilder calls to construct a given AST.
jlahoda
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|
422 |
public void minusminus(Consumer<Expression> expr) { |
5497ee9d40f4
Adding a prototype of CodeBuilder to build a sequence of TreeBuilder calls to construct a given AST.
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|
423 |
throw new UnsupportedOperationException("Not supported yet."); |
5497ee9d40f4
Adding a prototype of CodeBuilder to build a sequence of TreeBuilder calls to construct a given AST.
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|
424 |
} |
5497ee9d40f4
Adding a prototype of CodeBuilder to build a sequence of TreeBuilder calls to construct a given AST.
jlahoda
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diff
changeset
|
425 |
|
5497ee9d40f4
Adding a prototype of CodeBuilder to build a sequence of TreeBuilder calls to construct a given AST.
jlahoda
parents:
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diff
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|
426 |
@Override |
5497ee9d40f4
Adding a prototype of CodeBuilder to build a sequence of TreeBuilder calls to construct a given AST.
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changeset
|
427 |
public void plus(Consumer<Expression> lhs, Consumer<Expression> rhs) { |
57296 | 428 |
expr = make.Binary(Tag.PLUS, |
429 |
visitExpression(lhs), |
|
430 |
visitExpression(rhs)); |
|
57295
5497ee9d40f4
Adding a prototype of CodeBuilder to build a sequence of TreeBuilder calls to construct a given AST.
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parents:
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changeset
|
431 |
} |
5497ee9d40f4
Adding a prototype of CodeBuilder to build a sequence of TreeBuilder calls to construct a given AST.
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parents:
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changeset
|
432 |
|
5497ee9d40f4
Adding a prototype of CodeBuilder to build a sequence of TreeBuilder calls to construct a given AST.
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parents:
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diff
changeset
|
433 |
@Override |
5497ee9d40f4
Adding a prototype of CodeBuilder to build a sequence of TreeBuilder calls to construct a given AST.
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changeset
|
434 |
public void cond(Consumer<Expression> cond, Consumer<Expression> truePart, Consumer<Expression> falsePart) { |
5497ee9d40f4
Adding a prototype of CodeBuilder to build a sequence of TreeBuilder calls to construct a given AST.
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diff
changeset
|
435 |
throw new UnsupportedOperationException("Not supported yet."); |
5497ee9d40f4
Adding a prototype of CodeBuilder to build a sequence of TreeBuilder calls to construct a given AST.
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parents:
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diff
changeset
|
436 |
} |
5497ee9d40f4
Adding a prototype of CodeBuilder to build a sequence of TreeBuilder calls to construct a given AST.
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parents:
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diff
changeset
|
437 |
|
5497ee9d40f4
Adding a prototype of CodeBuilder to build a sequence of TreeBuilder calls to construct a given AST.
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parents:
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diff
changeset
|
438 |
@Override |
57296 | 439 |
public void select(Consumer<Expression> selected, String name) { |
440 |
expr = make.Select(visitExpression(selected), names.fromString(name)); |
|
441 |
} |
|
442 |
||
443 |
@Override |
|
444 |
public void ident(String ident) { |
|
445 |
expr = make.Ident(names.fromString(ident)); //XXX |
|
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Adding a prototype of CodeBuilder to build a sequence of TreeBuilder calls to construct a given AST.
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|
446 |
} |
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Adding a prototype of CodeBuilder to build a sequence of TreeBuilder calls to construct a given AST.
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changeset
|
447 |
|
5497ee9d40f4
Adding a prototype of CodeBuilder to build a sequence of TreeBuilder calls to construct a given AST.
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parents:
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changeset
|
448 |
@Override |
5497ee9d40f4
Adding a prototype of CodeBuilder to build a sequence of TreeBuilder calls to construct a given AST.
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|
449 |
public void literal(Object value) { |
5497ee9d40f4
Adding a prototype of CodeBuilder to build a sequence of TreeBuilder calls to construct a given AST.
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changeset
|
450 |
expr = make.Literal(value); |
5497ee9d40f4
Adding a prototype of CodeBuilder to build a sequence of TreeBuilder calls to construct a given AST.
jlahoda
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changeset
|
451 |
} |
57298
72d5f7163f12
Adding ability to supply code as text instead of Trees on some places.
jlahoda
parents:
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diff
changeset
|
452 |
|
72d5f7163f12
Adding ability to supply code as text instead of Trees on some places.
jlahoda
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diff
changeset
|
453 |
@Override |
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Adding ability to supply code as text instead of Trees on some places.
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|
454 |
public void expression(String expression) { |
72d5f7163f12
Adding ability to supply code as text instead of Trees on some places.
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|
455 |
expr = parse(expression, Parser::parseExpression); |
72d5f7163f12
Adding ability to supply code as text instead of Trees on some places.
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changeset
|
456 |
} |
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Adding ability to supply code as text instead of Trees on some places.
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diff
changeset
|
457 |
|
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Adding a prototype of CodeBuilder to build a sequence of TreeBuilder calls to construct a given AST.
jlahoda
parents:
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diff
changeset
|
458 |
} |
57296 | 459 |
|
460 |
private final class QualifiedNameImpl implements QualifiedName { |
|
461 |
||
462 |
private JCExpression expr; |
|
463 |
||
464 |
@Override |
|
465 |
public void select(Consumer<QualifiedName> selected, String name) { |
|
466 |
expr = make.Select(visitQualifiedName(selected), names.fromString(name)); |
|
467 |
} |
|
468 |
||
469 |
@Override |
|
470 |
public void ident(String ident) { |
|
471 |
expr = make.Ident(names.fromString(ident)); |
|
472 |
} |
|
473 |
||
474 |
@Override |
|
475 |
public void ident(String... qnames) { |
|
476 |
expr = make.Ident(names.fromString(qnames[0])); |
|
477 |
for (int i = 1; i < qnames.length; i++) { |
|
478 |
expr = make.Select(expr, names.fromString(qnames[i])); |
|
479 |
} |
|
480 |
} |
|
481 |
||
482 |
} |
|
483 |
||
484 |
private JCExpression visitExpression(Consumer<Expression> c) { |
|
485 |
ExpressionImpl expr = new ExpressionImpl(); |
|
486 |
||
487 |
c.accept(expr); |
|
488 |
||
489 |
if (expr.expr == null) { |
|
490 |
throw new IllegalStateException("Expression not provided!"); |
|
491 |
} |
|
492 |
||
493 |
return expr.expr; |
|
494 |
} |
|
495 |
||
496 |
private JCExpression visitQualifiedName(Consumer<QualifiedName> c) { |
|
497 |
QualifiedNameImpl expr = new QualifiedNameImpl(); |
|
498 |
||
499 |
c.accept(expr); |
|
500 |
||
501 |
if (expr.expr == null) { |
|
502 |
throw new IllegalStateException("Name not provided!"); |
|
503 |
} |
|
504 |
||
505 |
return expr.expr; |
|
506 |
} |
|
507 |
||
508 |
private JCExpression visitType(Consumer<Type> c) { |
|
509 |
TypeImpl type = new TypeImpl(); |
|
510 |
||
511 |
c.accept(type); |
|
512 |
||
513 |
if (type.type == null) { |
|
514 |
throw new IllegalStateException("Expression not provided!"); |
|
515 |
} |
|
516 |
||
517 |
return type.type; |
|
518 |
} |
|
57298
72d5f7163f12
Adding ability to supply code as text instead of Trees on some places.
jlahoda
parents:
57297
diff
changeset
|
519 |
|
72d5f7163f12
Adding ability to supply code as text instead of Trees on some places.
jlahoda
parents:
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diff
changeset
|
520 |
private <T extends JCTree> T parse(String toParse, Function<Parser, T> runParse) { |
72d5f7163f12
Adding ability to supply code as text instead of Trees on some places.
jlahoda
parents:
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diff
changeset
|
521 |
if (toParse == null || toParse.equals("")) |
72d5f7163f12
Adding ability to supply code as text instead of Trees on some places.
jlahoda
parents:
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diff
changeset
|
522 |
throw new IllegalArgumentException(); |
72d5f7163f12
Adding ability to supply code as text instead of Trees on some places.
jlahoda
parents:
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diff
changeset
|
523 |
JavaFileObject prev = compiler.log.useSource(null); |
72d5f7163f12
Adding ability to supply code as text instead of Trees on some places.
jlahoda
parents:
57297
diff
changeset
|
524 |
DiagnosticHandler h = null; |
72d5f7163f12
Adding ability to supply code as text instead of Trees on some places.
jlahoda
parents:
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diff
changeset
|
525 |
try { |
72d5f7163f12
Adding ability to supply code as text instead of Trees on some places.
jlahoda
parents:
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diff
changeset
|
526 |
h = new DiagnosticHandler() { |
72d5f7163f12
Adding ability to supply code as text instead of Trees on some places.
jlahoda
parents:
57297
diff
changeset
|
527 |
{ |
72d5f7163f12
Adding ability to supply code as text instead of Trees on some places.
jlahoda
parents:
57297
diff
changeset
|
528 |
install(compiler.log); |
72d5f7163f12
Adding ability to supply code as text instead of Trees on some places.
jlahoda
parents:
57297
diff
changeset
|
529 |
} |
72d5f7163f12
Adding ability to supply code as text instead of Trees on some places.
jlahoda
parents:
57297
diff
changeset
|
530 |
@Override |
72d5f7163f12
Adding ability to supply code as text instead of Trees on some places.
jlahoda
parents:
57297
diff
changeset
|
531 |
public void report(JCDiagnostic err) { |
72d5f7163f12
Adding ability to supply code as text instead of Trees on some places.
jlahoda
parents:
57297
diff
changeset
|
532 |
if (err.getKind() == JCDiagnostic.Kind.ERROR) { |
72d5f7163f12
Adding ability to supply code as text instead of Trees on some places.
jlahoda
parents:
57297
diff
changeset
|
533 |
throw new IllegalArgumentException("Cannot parse input: " + err.getMessage(null)); |
72d5f7163f12
Adding ability to supply code as text instead of Trees on some places.
jlahoda
parents:
57297
diff
changeset
|
534 |
} |
72d5f7163f12
Adding ability to supply code as text instead of Trees on some places.
jlahoda
parents:
57297
diff
changeset
|
535 |
} |
72d5f7163f12
Adding ability to supply code as text instead of Trees on some places.
jlahoda
parents:
57297
diff
changeset
|
536 |
}; |
72d5f7163f12
Adding ability to supply code as text instead of Trees on some places.
jlahoda
parents:
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diff
changeset
|
537 |
CharBuffer buf = CharBuffer.wrap((toParse+"\u0000").toCharArray(), 0, toParse.length()); |
72d5f7163f12
Adding ability to supply code as text instead of Trees on some places.
jlahoda
parents:
57297
diff
changeset
|
538 |
Parser parser = parserFactory.newParser(buf, false, false, false); |
72d5f7163f12
Adding ability to supply code as text instead of Trees on some places.
jlahoda
parents:
57297
diff
changeset
|
539 |
return runParse.apply(parser); |
72d5f7163f12
Adding ability to supply code as text instead of Trees on some places.
jlahoda
parents:
57297
diff
changeset
|
540 |
} finally { |
72d5f7163f12
Adding ability to supply code as text instead of Trees on some places.
jlahoda
parents:
57297
diff
changeset
|
541 |
compiler.log.popDiagnosticHandler(h); |
72d5f7163f12
Adding ability to supply code as text instead of Trees on some places.
jlahoda
parents:
57297
diff
changeset
|
542 |
compiler.log.useSource(prev); |
72d5f7163f12
Adding ability to supply code as text instead of Trees on some places.
jlahoda
parents:
57297
diff
changeset
|
543 |
} |
72d5f7163f12
Adding ability to supply code as text instead of Trees on some places.
jlahoda
parents:
57297
diff
changeset
|
544 |
} |
72d5f7163f12
Adding ability to supply code as text instead of Trees on some places.
jlahoda
parents:
57297
diff
changeset
|
545 |
|
57267
97aaf02ed830
A first very crude experiment on a tree builder for javac.
jlahoda
parents:
diff
changeset
|
546 |
} |