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Added ParserEnvironment, moved NameTable and Types into it, and defin…
…ed JDT implementation. Roll-forward of 129653929, now that build paths are fixed. Change on 2016/08/22 by tball <tball@google.com> ------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=130946247
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translator/src/main/java/com/google/devtools/j2objc/javac/JavacEnvironment.java
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| /* | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
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| package com.google.devtools.j2objc.javac; | ||
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| import com.google.devtools.j2objc.util.NameTable.Factory; | ||
| import com.google.devtools.j2objc.util.ParserEnvironment; | ||
| import com.sun.tools.javac.code.Symbol.ClassSymbol; | ||
| import com.sun.tools.javac.code.Symtab; | ||
| import com.sun.tools.javac.jvm.ClassReader; | ||
| import com.sun.tools.javac.model.JavacElements; | ||
| import com.sun.tools.javac.model.JavacTypes; | ||
| import com.sun.tools.javac.util.Context; | ||
| import com.sun.tools.javac.util.Name; | ||
| import com.sun.tools.javac.util.Names; | ||
| import java.lang.reflect.InvocationTargetException; | ||
| import java.lang.reflect.Method; | ||
| import javax.lang.model.element.Element; | ||
| import javax.lang.model.util.Elements; | ||
| import javax.lang.model.util.Types; | ||
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| class JavacEnvironment extends ParserEnvironment { | ||
| private final ClassReader classReader; | ||
| private final Names javacNames; | ||
| private final Symtab symbolTable; | ||
| private final JavacElements javacElements; | ||
| private final JavacTypes javacTypes; | ||
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| protected JavacEnvironment(Factory nameTableFactory, Context context) { | ||
| super(nameTableFactory); | ||
| classReader = ClassReader.instance(context); | ||
| javacNames = Names.instance(context); | ||
| symbolTable = Symtab.instance(context); | ||
| javacElements = JavacElements.instance(context); | ||
| javacTypes = JavacTypes.instance(context); | ||
| } | ||
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| @Override | ||
| public Element resolve(String name) { | ||
| Name className = javacNames.fromString(name); | ||
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| // Check first if compiler already created or loaded the class. | ||
| ClassSymbol symbol = symbolTable.classes.get(className); | ||
| if (symbol == null) { | ||
| // Not available, read it from a class file. | ||
| // Note: the enterName(Name) method moved from ClassReader to | ||
| // Symtab in Java 9. Reflection is used to support both locations. | ||
| symbol = enterClassJavac(className); | ||
| if (symbol != null) { | ||
| symbolTable.classes.put(className, symbol); | ||
| } else { | ||
| symbol = enterClassJavac9(className); | ||
| // The symbolTable is already updated in Java 9. | ||
| } | ||
| } | ||
| return symbol; | ||
| } | ||
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| private ClassSymbol enterClassJavac(Name className) { | ||
| try { | ||
| Method m = ClassReader.class.getDeclaredMethod("enterName", Name.class); | ||
| return (ClassSymbol) m.invoke(classReader, className); | ||
| } catch (NoSuchMethodException | InvocationTargetException | IllegalAccessException e) { | ||
| return null; | ||
| } | ||
| } | ||
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| private ClassSymbol enterClassJavac9(Name className) { | ||
| try { | ||
| Method m = Symtab.class.getDeclaredMethod("enterName", Name.class); | ||
| return (ClassSymbol) m.invoke(symbolTable, className); | ||
| } catch (NoSuchMethodException | InvocationTargetException | IllegalAccessException e) { | ||
| return null; | ||
| } | ||
| } | ||
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| @Override | ||
| public Elements elementUtilities() { | ||
| return javacElements; | ||
| } | ||
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| @Override | ||
| public Types typeUtilities() { | ||
| return javacTypes; | ||
| } | ||
| } |
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