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1415 lines
56 KiB
1415 lines
56 KiB
5 years ago
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/*
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* Javassist, a Java-bytecode translator toolkit.
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* Copyright (C) 1999- Shigeru Chiba. All Rights Reserved.
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. Alternatively, the contents of this file may be used under
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* the terms of the GNU Lesser General Public License Version 2.1 or later,
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* or the Apache License Version 2.0.
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*/
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package com.fr.third.javassist;
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import com.fr.third.javassist.bytecode.ConstPool;
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import com.fr.third.javassist.compiler.Javac;
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import com.fr.third.javassist.compiler.SymbolTable;
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import com.fr.third.javassist.compiler.CompileError;
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import com.fr.third.javassist.compiler.ast.ASTree;
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import com.fr.third.javassist.compiler.ast.IntConst;
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import com.fr.third.javassist.compiler.ast.DoubleConst;
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import com.fr.third.javassist.compiler.ast.StringL;
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/**
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* An instance of CtField represents a field.
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*
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* @see com.fr.third.javassist.CtClass#getDeclaredFields()
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*/
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public class CtField extends CtMember {
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static final String javaLangString = "java.lang.String";
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protected com.fr.third.javassist.bytecode.FieldInfo fieldInfo;
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/**
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* Creates a <code>CtField</code> object.
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* The created field must be added to a class
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* with <code>CtClass.addField()</code>.
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* An initial value of the field is specified
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* by a <code>CtField.Initializer</code> object.
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*
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* <p>If getter and setter methods are needed,
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* call <code>CtNewMethod.getter()</code> and
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* <code>CtNewMethod.setter()</code>.
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*
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* @param type field type
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* @param name field name
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* @param declaring the class to which the field will be added.
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*
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* @see com.fr.third.javassist.CtClass#addField(CtField)
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* @see CtNewMethod#getter(String,CtField)
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* @see CtNewMethod#setter(String,CtField)
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* @see CtField.Initializer
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*/
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public CtField(com.fr.third.javassist.CtClass type, String name, com.fr.third.javassist.CtClass declaring)
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throws com.fr.third.javassist.CannotCompileException
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{
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this(com.fr.third.javassist.bytecode.Descriptor.of(type), name, declaring);
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}
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/**
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* Creates a copy of the given field.
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* The created field must be added to a class
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* with <code>CtClass.addField()</code>.
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* An initial value of the field is specified
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* by a <code>CtField.Initializer</code> object.
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*
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* <p>If getter and setter methods are needed,
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* call <code>CtNewMethod.getter()</code> and
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* <code>CtNewMethod.setter()</code>.
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*
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* @param src the original field
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* @param declaring the class to which the field will be added.
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* @see CtNewMethod#getter(String,CtField)
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* @see CtNewMethod#setter(String,CtField)
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* @see CtField.Initializer
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*/
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public CtField(CtField src, com.fr.third.javassist.CtClass declaring)
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throws com.fr.third.javassist.CannotCompileException
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{
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this(src.fieldInfo.getDescriptor(), src.fieldInfo.getName(),
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declaring);
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java.util.ListIterator iterator
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= src.fieldInfo.getAttributes().listIterator();
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com.fr.third.javassist.bytecode.FieldInfo fi = fieldInfo;
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fi.setAccessFlags(src.fieldInfo.getAccessFlags());
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com.fr.third.javassist.bytecode.ConstPool cp = fi.getConstPool();
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while (iterator.hasNext()) {
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com.fr.third.javassist.bytecode.AttributeInfo ainfo = (com.fr.third.javassist.bytecode.AttributeInfo)iterator.next();
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fi.addAttribute(ainfo.copy(cp, null));
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}
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}
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private CtField(String typeDesc, String name, com.fr.third.javassist.CtClass clazz)
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throws com.fr.third.javassist.CannotCompileException
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{
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super(clazz);
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com.fr.third.javassist.bytecode.ClassFile cf = clazz.getClassFile2();
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if (cf == null)
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throw new com.fr.third.javassist.CannotCompileException("bad declaring class: "
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+ clazz.getName());
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fieldInfo = new com.fr.third.javassist.bytecode.FieldInfo(cf.getConstPool(), name, typeDesc);
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}
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CtField(com.fr.third.javassist.bytecode.FieldInfo fi, com.fr.third.javassist.CtClass clazz) {
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super(clazz);
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fieldInfo = fi;
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}
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/**
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* Returns a String representation of the object.
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*/
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public String toString() {
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return getDeclaringClass().getName() + "." + getName()
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+ ":" + fieldInfo.getDescriptor();
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}
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protected void extendToString(StringBuffer buffer) {
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buffer.append(' ');
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buffer.append(getName());
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buffer.append(' ');
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buffer.append(fieldInfo.getDescriptor());
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}
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/* Javac.CtFieldWithInit overrides.
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*/
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protected ASTree getInitAST() { return null; }
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/* Called by CtClassType.addField().
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*/
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Initializer getInit() {
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ASTree tree = getInitAST();
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if (tree == null)
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return null;
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else
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return Initializer.byExpr(tree);
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}
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/**
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* Compiles the given source code and creates a field.
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* Examples of the source code are:
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*
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* <ul><pre>
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* "public String name;"
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* "public int k = 3;"</pre></ul>
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*
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* <p>Note that the source code ends with <code>';'</code>
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* (semicolon).
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*
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* @param src the source text.
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* @param declaring the class to which the created field is added.
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*/
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public static CtField make(String src, com.fr.third.javassist.CtClass declaring)
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throws com.fr.third.javassist.CannotCompileException
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{
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Javac compiler = new Javac(declaring);
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try {
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CtMember obj = compiler.compile(src);
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if (obj instanceof CtField)
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return (CtField)obj; // an instance of Javac.CtFieldWithInit
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||
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}
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catch (CompileError e) {
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throw new com.fr.third.javassist.CannotCompileException(e);
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}
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throw new com.fr.third.javassist.CannotCompileException("not a field");
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}
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/**
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* Returns the FieldInfo representing the field in the class file.
|
||
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*/
|
||
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public com.fr.third.javassist.bytecode.FieldInfo getFieldInfo() {
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declaringClass.checkModify();
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return fieldInfo;
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||
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}
|
||
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||
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/**
|
||
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* Returns the FieldInfo representing the field in the class
|
||
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* file (read only).
|
||
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* Normal applications do not need calling this method. Use
|
||
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* <code>getFieldInfo()</code>.
|
||
|
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*
|
||
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* <p>The <code>FieldInfo</code> object obtained by this method
|
||
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* is read only. Changes to this object might not be reflected
|
||
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* on a class file generated by <code>toBytecode()</code>,
|
||
|
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* <code>toClass()</code>, etc in <code>CtClass</code>.
|
||
|
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*
|
||
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* <p>This method is available even if the <code>CtClass</code>
|
||
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* containing this field is frozen. However, if the class is
|
||
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* frozen, the <code>FieldInfo</code> might be also pruned.
|
||
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*
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* @see #getFieldInfo()
|
||
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* @see com.fr.third.javassist.CtClass#isFrozen()
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* @see com.fr.third.javassist.CtClass#prune()
|
||
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*/
|
||
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public com.fr.third.javassist.bytecode.FieldInfo getFieldInfo2() { return fieldInfo; }
|
||
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|
||
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/**
|
||
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* Returns the class declaring the field.
|
||
|
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*/
|
||
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public com.fr.third.javassist.CtClass getDeclaringClass() {
|
||
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// this is redundant but for javadoc.
|
||
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return super.getDeclaringClass();
|
||
|
|
}
|
||
|
|
|
||
|
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/**
|
||
|
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* Returns the name of the field.
|
||
|
|
*/
|
||
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public String getName() {
|
||
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return fieldInfo.getName();
|
||
|
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}
|
||
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||
|
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/**
|
||
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* Changes the name of the field.
|
||
|
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*/
|
||
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public void setName(String newName) {
|
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declaringClass.checkModify();
|
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fieldInfo.setName(newName);
|
||
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}
|
||
|
|
|
||
|
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/**
|
||
|
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* Returns the encoded modifiers of the field.
|
||
|
|
*
|
||
|
|
* @see Modifier
|
||
|
|
*/
|
||
|
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public int getModifiers() {
|
||
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return com.fr.third.javassist.bytecode.AccessFlag.toModifier(fieldInfo.getAccessFlags());
|
||
|
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}
|
||
|
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||
|
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/**
|
||
|
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* Sets the encoded modifiers of the field.
|
||
|
|
*
|
||
|
|
* @see Modifier
|
||
|
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*/
|
||
|
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public void setModifiers(int mod) {
|
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declaringClass.checkModify();
|
||
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fieldInfo.setAccessFlags(com.fr.third.javassist.bytecode.AccessFlag.of(mod));
|
||
|
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}
|
||
|
|
|
||
|
|
/**
|
||
|
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* Returns true if the class has the specified annotation class.
|
||
|
|
*
|
||
|
|
* @param clz the annotation class.
|
||
|
|
* @return <code>true</code> if the annotation is found, otherwise <code>false</code>.
|
||
|
|
* @since 3.11
|
||
|
|
*/
|
||
|
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public boolean hasAnnotation(Class clz) {
|
||
|
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com.fr.third.javassist.bytecode.FieldInfo fi = getFieldInfo2();
|
||
|
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com.fr.third.javassist.bytecode.AnnotationsAttribute ainfo = (com.fr.third.javassist.bytecode.AnnotationsAttribute)
|
||
|
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fi.getAttribute(com.fr.third.javassist.bytecode.AnnotationsAttribute.invisibleTag);
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||
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com.fr.third.javassist.bytecode.AnnotationsAttribute ainfo2 = (com.fr.third.javassist.bytecode.AnnotationsAttribute)
|
||
|
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fi.getAttribute(com.fr.third.javassist.bytecode.AnnotationsAttribute.visibleTag);
|
||
|
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return com.fr.third.javassist.CtClassType.hasAnnotationType(clz, getDeclaringClass().getClassPool(),
|
||
|
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ainfo, ainfo2);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the annotation if the class has the specified annotation class.
|
||
|
|
* For example, if an annotation <code>@Author</code> is associated
|
||
|
|
* with this field, an <code>Author</code> object is returned.
|
||
|
|
* The member values can be obtained by calling methods on
|
||
|
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* the <code>Author</code> object.
|
||
|
|
*
|
||
|
|
* @param clz the annotation class.
|
||
|
|
* @return the annotation if found, otherwise <code>null</code>.
|
||
|
|
* @since 3.11
|
||
|
|
*/
|
||
|
|
public Object getAnnotation(Class clz) throws ClassNotFoundException {
|
||
|
|
com.fr.third.javassist.bytecode.FieldInfo fi = getFieldInfo2();
|
||
|
|
com.fr.third.javassist.bytecode.AnnotationsAttribute ainfo = (com.fr.third.javassist.bytecode.AnnotationsAttribute)
|
||
|
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fi.getAttribute(com.fr.third.javassist.bytecode.AnnotationsAttribute.invisibleTag);
|
||
|
|
com.fr.third.javassist.bytecode.AnnotationsAttribute ainfo2 = (com.fr.third.javassist.bytecode.AnnotationsAttribute)
|
||
|
|
fi.getAttribute(com.fr.third.javassist.bytecode.AnnotationsAttribute.visibleTag);
|
||
|
|
return com.fr.third.javassist.CtClassType.getAnnotationType(clz, getDeclaringClass().getClassPool(),
|
||
|
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ainfo, ainfo2);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the annotations associated with this field.
|
||
|
|
*
|
||
|
|
* @return an array of annotation-type objects.
|
||
|
|
* @see #getAvailableAnnotations()
|
||
|
|
* @since 3.1
|
||
|
|
*/
|
||
|
|
public Object[] getAnnotations() throws ClassNotFoundException {
|
||
|
|
return getAnnotations(false);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the annotations associated with this field.
|
||
|
|
* If any annotations are not on the classpath, they are not included
|
||
|
|
* in the returned array.
|
||
|
|
*
|
||
|
|
* @return an array of annotation-type objects.
|
||
|
|
* @see #getAnnotations()
|
||
|
|
* @since 3.3
|
||
|
|
*/
|
||
|
|
public Object[] getAvailableAnnotations(){
|
||
|
|
try {
|
||
|
|
return getAnnotations(true);
|
||
|
|
}
|
||
|
|
catch (ClassNotFoundException e) {
|
||
|
|
throw new RuntimeException("Unexpected exception", e);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private Object[] getAnnotations(boolean ignoreNotFound) throws ClassNotFoundException {
|
||
|
|
com.fr.third.javassist.bytecode.FieldInfo fi = getFieldInfo2();
|
||
|
|
com.fr.third.javassist.bytecode.AnnotationsAttribute ainfo = (com.fr.third.javassist.bytecode.AnnotationsAttribute)
|
||
|
|
fi.getAttribute(com.fr.third.javassist.bytecode.AnnotationsAttribute.invisibleTag);
|
||
|
|
com.fr.third.javassist.bytecode.AnnotationsAttribute ainfo2 = (com.fr.third.javassist.bytecode.AnnotationsAttribute)
|
||
|
|
fi.getAttribute(com.fr.third.javassist.bytecode.AnnotationsAttribute.visibleTag);
|
||
|
|
return com.fr.third.javassist.CtClassType.toAnnotationType(ignoreNotFound, getDeclaringClass().getClassPool(),
|
||
|
|
ainfo, ainfo2);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the character string representing the type of the field.
|
||
|
|
* The field signature is represented by a character string
|
||
|
|
* called a field descriptor, which is defined in the JVM specification.
|
||
|
|
* If two fields have the same type,
|
||
|
|
* <code>getSignature()</code> returns the same string.
|
||
|
|
*
|
||
|
|
* <p>Note that the returned string is not the type signature
|
||
|
|
* contained in the <code>SignatureAttirbute</code>. It is
|
||
|
|
* a descriptor.
|
||
|
|
*
|
||
|
|
* @see com.fr.third.javassist.bytecode.Descriptor
|
||
|
|
* @see #getGenericSignature()
|
||
|
|
*/
|
||
|
|
public String getSignature() {
|
||
|
|
return fieldInfo.getDescriptor();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the generic signature of the field.
|
||
|
|
* It represents a type including type variables.
|
||
|
|
*
|
||
|
|
* @see com.fr.third.javassist.bytecode.SignatureAttribute#toFieldSignature(String)
|
||
|
|
* @since 3.17
|
||
|
|
*/
|
||
|
|
public String getGenericSignature() {
|
||
|
|
com.fr.third.javassist.bytecode.SignatureAttribute sa
|
||
|
|
= (com.fr.third.javassist.bytecode.SignatureAttribute)fieldInfo.getAttribute(com.fr.third.javassist.bytecode.SignatureAttribute.tag);
|
||
|
|
return sa == null ? null : sa.getSignature();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Set the generic signature of the field.
|
||
|
|
* It represents a type including type variables.
|
||
|
|
* See {@link com.fr.third.javassist.CtClass#setGenericSignature(String)}
|
||
|
|
* for a code sample.
|
||
|
|
*
|
||
|
|
* @param sig a new generic signature.
|
||
|
|
* @see com.fr.third.javassist.bytecode.SignatureAttribute.ObjectType#encode()
|
||
|
|
* @since 3.17
|
||
|
|
*/
|
||
|
|
public void setGenericSignature(String sig) {
|
||
|
|
declaringClass.checkModify();
|
||
|
|
fieldInfo.addAttribute(new com.fr.third.javassist.bytecode.SignatureAttribute(fieldInfo.getConstPool(), sig));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the type of the field.
|
||
|
|
*/
|
||
|
|
public com.fr.third.javassist.CtClass getType() throws NotFoundException {
|
||
|
|
return com.fr.third.javassist.bytecode.Descriptor.toCtClass(fieldInfo.getDescriptor(),
|
||
|
|
declaringClass.getClassPool());
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Sets the type of the field.
|
||
|
|
*/
|
||
|
|
public void setType(com.fr.third.javassist.CtClass clazz) {
|
||
|
|
declaringClass.checkModify();
|
||
|
|
fieldInfo.setDescriptor(com.fr.third.javassist.bytecode.Descriptor.of(clazz));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the value of this field if it is a constant field.
|
||
|
|
* This method works only if the field type is a primitive type
|
||
|
|
* or <code>String</code> type. Otherwise, it returns <code>null</code>.
|
||
|
|
* A constant field is <code>static</code> and <code>final</code>.
|
||
|
|
*
|
||
|
|
* @return a <code>Integer</code>, <code>Long</code>, <code>Float</code>,
|
||
|
|
* <code>Double</code>, <code>Boolean</code>,
|
||
|
|
* or <code>String</code> object
|
||
|
|
* representing the constant value.
|
||
|
|
* <code>null</code> if it is not a constant field
|
||
|
|
* or if the field type is not a primitive type
|
||
|
|
* or <code>String</code>.
|
||
|
|
*/
|
||
|
|
public Object getConstantValue() {
|
||
|
|
// When this method is modified,
|
||
|
|
// see also getConstantFieldValue() in TypeChecker.
|
||
|
|
|
||
|
|
int index = fieldInfo.getConstantValue();
|
||
|
|
if (index == 0)
|
||
|
|
return null;
|
||
|
|
|
||
|
|
com.fr.third.javassist.bytecode.ConstPool cp = fieldInfo.getConstPool();
|
||
|
|
switch (cp.getTag(index)) {
|
||
|
|
case com.fr.third.javassist.bytecode.ConstPool.CONST_Long :
|
||
|
|
return new Long(cp.getLongInfo(index));
|
||
|
|
case com.fr.third.javassist.bytecode.ConstPool.CONST_Float :
|
||
|
|
return new Float(cp.getFloatInfo(index));
|
||
|
|
case com.fr.third.javassist.bytecode.ConstPool.CONST_Double :
|
||
|
|
return new Double(cp.getDoubleInfo(index));
|
||
|
|
case com.fr.third.javassist.bytecode.ConstPool.CONST_Integer :
|
||
|
|
int value = cp.getIntegerInfo(index);
|
||
|
|
// "Z" means boolean type.
|
||
|
|
if ("Z".equals(fieldInfo.getDescriptor()))
|
||
|
|
return new Boolean(value != 0);
|
||
|
|
else
|
||
|
|
return new Integer(value);
|
||
|
|
case com.fr.third.javassist.bytecode.ConstPool.CONST_String :
|
||
|
|
return cp.getStringInfo(index);
|
||
|
|
default :
|
||
|
|
throw new RuntimeException("bad tag: " + cp.getTag(index)
|
||
|
|
+ " at " + index);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Obtains an attribute with the given name.
|
||
|
|
* If that attribute is not found in the class file, this
|
||
|
|
* method returns null.
|
||
|
|
*
|
||
|
|
* <p>Note that an attribute is a data block specified by
|
||
|
|
* the class file format.
|
||
|
|
* See {@link com.fr.third.javassist.bytecode.AttributeInfo}.
|
||
|
|
*
|
||
|
|
* @param name attribute name
|
||
|
|
*/
|
||
|
|
public byte[] getAttribute(String name) {
|
||
|
|
com.fr.third.javassist.bytecode.AttributeInfo ai = fieldInfo.getAttribute(name);
|
||
|
|
if (ai == null)
|
||
|
|
return null;
|
||
|
|
else
|
||
|
|
return ai.get();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Adds an attribute. The attribute is saved in the class file.
|
||
|
|
*
|
||
|
|
* <p>Note that an attribute is a data block specified by
|
||
|
|
* the class file format.
|
||
|
|
* See {@link com.fr.third.javassist.bytecode.AttributeInfo}.
|
||
|
|
*
|
||
|
|
* @param name attribute name
|
||
|
|
* @param data attribute value
|
||
|
|
*/
|
||
|
|
public void setAttribute(String name, byte[] data) {
|
||
|
|
declaringClass.checkModify();
|
||
|
|
fieldInfo.addAttribute(new com.fr.third.javassist.bytecode.AttributeInfo(fieldInfo.getConstPool(),
|
||
|
|
name, data));
|
||
|
|
}
|
||
|
|
|
||
|
|
// inner classes
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Instances of this class specify how to initialize a field.
|
||
|
|
* <code>Initializer</code> is passed to
|
||
|
|
* <code>CtClass.addField()</code> with a <code>CtField</code>.
|
||
|
|
*
|
||
|
|
* <p>This class cannot be instantiated with the <code>new</code> operator.
|
||
|
|
* Factory methods such as <code>byParameter()</code> and
|
||
|
|
* <code>byNew</code>
|
||
|
|
* must be used for the instantiation. They create a new instance with
|
||
|
|
* the given parameters and return it.
|
||
|
|
*
|
||
|
|
* @see com.fr.third.javassist.CtClass#addField(CtField,CtField.Initializer)
|
||
|
|
*/
|
||
|
|
public static abstract class Initializer {
|
||
|
|
/**
|
||
|
|
* Makes an initializer that assigns a constant integer value.
|
||
|
|
* The field must be integer, short, char, or byte type.
|
||
|
|
*/
|
||
|
|
public static Initializer constant(int i) {
|
||
|
|
return new IntInitializer(i);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Makes an initializer that assigns a constant boolean value.
|
||
|
|
* The field must be boolean type.
|
||
|
|
*/
|
||
|
|
public static Initializer constant(boolean b) {
|
||
|
|
return new IntInitializer(b ? 1 : 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Makes an initializer that assigns a constant long value.
|
||
|
|
* The field must be long type.
|
||
|
|
*/
|
||
|
|
public static Initializer constant(long l) {
|
||
|
|
return new LongInitializer(l);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Makes an initializer that assigns a constant float value.
|
||
|
|
* The field must be float type.
|
||
|
|
*/
|
||
|
|
public static Initializer constant(float l) {
|
||
|
|
return new FloatInitializer(l);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Makes an initializer that assigns a constant double value.
|
||
|
|
* The field must be double type.
|
||
|
|
*/
|
||
|
|
public static Initializer constant(double d) {
|
||
|
|
return new DoubleInitializer(d);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Makes an initializer that assigns a constant string value.
|
||
|
|
* The field must be <code>java.lang.String</code> type.
|
||
|
|
*/
|
||
|
|
public static Initializer constant(String s) {
|
||
|
|
return new StringInitializer(s);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Makes an initializer using a constructor parameter.
|
||
|
|
*
|
||
|
|
* <p>The initial value is the
|
||
|
|
* N-th parameter given to the constructor of the object including
|
||
|
|
* the field. If the constructor takes less than N parameters,
|
||
|
|
* the field is not initialized.
|
||
|
|
* If the field is static, it is never initialized.
|
||
|
|
*
|
||
|
|
* @param nth the n-th (>= 0) parameter is used as
|
||
|
|
* the initial value.
|
||
|
|
* If nth is 0, then the first parameter is
|
||
|
|
* used.
|
||
|
|
*/
|
||
|
|
public static Initializer byParameter(int nth) {
|
||
|
|
ParamInitializer i = new ParamInitializer();
|
||
|
|
i.nthParam = nth;
|
||
|
|
return i;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Makes an initializer creating a new object.
|
||
|
|
*
|
||
|
|
* <p>This initializer creates a new object and uses it as the initial
|
||
|
|
* value of the field. The constructor of the created object receives
|
||
|
|
* the parameter:
|
||
|
|
*
|
||
|
|
* <ul><code>Object obj</code> - the object including the field.<br>
|
||
|
|
* </ul>
|
||
|
|
*
|
||
|
|
* <p>If the initialized field is static, then the constructor does
|
||
|
|
* not receive any parameters.
|
||
|
|
*
|
||
|
|
* @param objectType the class instantiated for the initial value.
|
||
|
|
*/
|
||
|
|
public static Initializer byNew(com.fr.third.javassist.CtClass objectType) {
|
||
|
|
NewInitializer i = new NewInitializer();
|
||
|
|
i.objectType = objectType;
|
||
|
|
i.stringParams = null;
|
||
|
|
i.withConstructorParams = false;
|
||
|
|
return i;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Makes an initializer creating a new object.
|
||
|
|
*
|
||
|
|
* <p>This initializer creates a new object and uses it as the initial
|
||
|
|
* value of the field. The constructor of the created object receives
|
||
|
|
* the parameters:
|
||
|
|
*
|
||
|
|
* <ul><code>Object obj</code> - the object including the field.<br>
|
||
|
|
* <code>String[] strs</code> - the character strings specified
|
||
|
|
* by <code>stringParams</code><br>
|
||
|
|
* </ul>
|
||
|
|
*
|
||
|
|
* <p>If the initialized field is static, then the constructor
|
||
|
|
* receives only <code>strs</code>.
|
||
|
|
*
|
||
|
|
* @param objectType the class instantiated for the initial value.
|
||
|
|
* @param stringParams the array of strings passed to the
|
||
|
|
* constructor.
|
||
|
|
*/
|
||
|
|
public static Initializer byNew(com.fr.third.javassist.CtClass objectType,
|
||
|
|
String[] stringParams) {
|
||
|
|
NewInitializer i = new NewInitializer();
|
||
|
|
i.objectType = objectType;
|
||
|
|
i.stringParams = stringParams;
|
||
|
|
i.withConstructorParams = false;
|
||
|
|
return i;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Makes an initializer creating a new object.
|
||
|
|
*
|
||
|
|
* <p>This initializer creates a new object and uses it as the initial
|
||
|
|
* value of the field. The constructor of the created object receives
|
||
|
|
* the parameters:
|
||
|
|
*
|
||
|
|
* <ul><code>Object obj</code> - the object including the field.<br>
|
||
|
|
* <code>Object[] args</code> - the parameters passed to the
|
||
|
|
* constructor of the object including the
|
||
|
|
* filed.
|
||
|
|
* </ul>
|
||
|
|
*
|
||
|
|
* <p>If the initialized field is static, then the constructor does
|
||
|
|
* not receive any parameters.
|
||
|
|
*
|
||
|
|
* @param objectType the class instantiated for the initial value.
|
||
|
|
*
|
||
|
|
* @see CtField.Initializer#byNewArray(com.fr.third.javassist.CtClass,int)
|
||
|
|
* @see CtField.Initializer#byNewArray(com.fr.third.javassist.CtClass,int[])
|
||
|
|
*/
|
||
|
|
public static Initializer byNewWithParams(com.fr.third.javassist.CtClass objectType) {
|
||
|
|
NewInitializer i = new NewInitializer();
|
||
|
|
i.objectType = objectType;
|
||
|
|
i.stringParams = null;
|
||
|
|
i.withConstructorParams = true;
|
||
|
|
return i;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Makes an initializer creating a new object.
|
||
|
|
*
|
||
|
|
* <p>This initializer creates a new object and uses it as the initial
|
||
|
|
* value of the field. The constructor of the created object receives
|
||
|
|
* the parameters:
|
||
|
|
*
|
||
|
|
* <ul><code>Object obj</code> - the object including the field.<br>
|
||
|
|
* <code>String[] strs</code> - the character strings specified
|
||
|
|
* by <code>stringParams</code><br>
|
||
|
|
* <code>Object[] args</code> - the parameters passed to the
|
||
|
|
* constructor of the object including the
|
||
|
|
* filed.
|
||
|
|
* </ul>
|
||
|
|
*
|
||
|
|
* <p>If the initialized field is static, then the constructor receives
|
||
|
|
* only <code>strs</code>.
|
||
|
|
*
|
||
|
|
* @param objectType the class instantiated for the initial value.
|
||
|
|
* @param stringParams the array of strings passed to the
|
||
|
|
* constructor.
|
||
|
|
*/
|
||
|
|
public static Initializer byNewWithParams(com.fr.third.javassist.CtClass objectType,
|
||
|
|
String[] stringParams) {
|
||
|
|
NewInitializer i = new NewInitializer();
|
||
|
|
i.objectType = objectType;
|
||
|
|
i.stringParams = stringParams;
|
||
|
|
i.withConstructorParams = true;
|
||
|
|
return i;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Makes an initializer calling a static method.
|
||
|
|
*
|
||
|
|
* <p>This initializer calls a static method and uses the returned
|
||
|
|
* value as the initial value of the field.
|
||
|
|
* The called method receives the parameters:
|
||
|
|
*
|
||
|
|
* <ul><code>Object obj</code> - the object including the field.<br>
|
||
|
|
* </ul>
|
||
|
|
*
|
||
|
|
* <p>If the initialized field is static, then the method does
|
||
|
|
* not receive any parameters.
|
||
|
|
*
|
||
|
|
* <p>The type of the returned value must be the same as the field
|
||
|
|
* type.
|
||
|
|
*
|
||
|
|
* @param methodClass the class that the static method is
|
||
|
|
* declared in.
|
||
|
|
* @param methodName the name of the satic method.
|
||
|
|
*/
|
||
|
|
public static Initializer byCall(com.fr.third.javassist.CtClass methodClass,
|
||
|
|
String methodName) {
|
||
|
|
MethodInitializer i = new MethodInitializer();
|
||
|
|
i.objectType = methodClass;
|
||
|
|
i.methodName = methodName;
|
||
|
|
i.stringParams = null;
|
||
|
|
i.withConstructorParams = false;
|
||
|
|
return i;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Makes an initializer calling a static method.
|
||
|
|
*
|
||
|
|
* <p>This initializer calls a static method and uses the returned
|
||
|
|
* value as the initial value of the field. The called method
|
||
|
|
* receives the parameters:
|
||
|
|
*
|
||
|
|
* <ul><code>Object obj</code> - the object including the field.<br>
|
||
|
|
* <code>String[] strs</code> - the character strings specified
|
||
|
|
* by <code>stringParams</code><br>
|
||
|
|
* </ul>
|
||
|
|
*
|
||
|
|
* <p>If the initialized field is static, then the method
|
||
|
|
* receive only <code>strs</code>.
|
||
|
|
*
|
||
|
|
* <p>The type of the returned value must be the same as the field
|
||
|
|
* type.
|
||
|
|
*
|
||
|
|
* @param methodClass the class that the static method is
|
||
|
|
* declared in.
|
||
|
|
* @param methodName the name of the satic method.
|
||
|
|
* @param stringParams the array of strings passed to the
|
||
|
|
* static method.
|
||
|
|
*/
|
||
|
|
public static Initializer byCall(com.fr.third.javassist.CtClass methodClass,
|
||
|
|
String methodName,
|
||
|
|
String[] stringParams) {
|
||
|
|
MethodInitializer i = new MethodInitializer();
|
||
|
|
i.objectType = methodClass;
|
||
|
|
i.methodName = methodName;
|
||
|
|
i.stringParams = stringParams;
|
||
|
|
i.withConstructorParams = false;
|
||
|
|
return i;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Makes an initializer calling a static method.
|
||
|
|
*
|
||
|
|
* <p>This initializer calls a static method and uses the returned
|
||
|
|
* value as the initial value of the field. The called method
|
||
|
|
* receives the parameters:
|
||
|
|
*
|
||
|
|
* <ul><code>Object obj</code> - the object including the field.<br>
|
||
|
|
* <code>Object[] args</code> - the parameters passed to the
|
||
|
|
* constructor of the object including the
|
||
|
|
* filed.
|
||
|
|
* </ul>
|
||
|
|
*
|
||
|
|
* <p>If the initialized field is static, then the method does
|
||
|
|
* not receive any parameters.
|
||
|
|
*
|
||
|
|
* <p>The type of the returned value must be the same as the field
|
||
|
|
* type.
|
||
|
|
*
|
||
|
|
* @param methodClass the class that the static method is
|
||
|
|
* declared in.
|
||
|
|
* @param methodName the name of the satic method.
|
||
|
|
*/
|
||
|
|
public static Initializer byCallWithParams(com.fr.third.javassist.CtClass methodClass,
|
||
|
|
String methodName) {
|
||
|
|
MethodInitializer i = new MethodInitializer();
|
||
|
|
i.objectType = methodClass;
|
||
|
|
i.methodName = methodName;
|
||
|
|
i.stringParams = null;
|
||
|
|
i.withConstructorParams = true;
|
||
|
|
return i;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Makes an initializer calling a static method.
|
||
|
|
*
|
||
|
|
* <p>This initializer calls a static method and uses the returned
|
||
|
|
* value as the initial value of the field. The called method
|
||
|
|
* receives the parameters:
|
||
|
|
*
|
||
|
|
* <ul><code>Object obj</code> - the object including the field.<br>
|
||
|
|
* <code>String[] strs</code> - the character strings specified
|
||
|
|
* by <code>stringParams</code><br>
|
||
|
|
* <code>Object[] args</code> - the parameters passed to the
|
||
|
|
* constructor of the object including the
|
||
|
|
* filed.
|
||
|
|
* </ul>
|
||
|
|
*
|
||
|
|
* <p>If the initialized field is static, then the method
|
||
|
|
* receive only <code>strs</code>.
|
||
|
|
*
|
||
|
|
* <p>The type of the returned value must be the same as the field
|
||
|
|
* type.
|
||
|
|
*
|
||
|
|
* @param methodClass the class that the static method is
|
||
|
|
* declared in.
|
||
|
|
* @param methodName the name of the satic method.
|
||
|
|
* @param stringParams the array of strings passed to the
|
||
|
|
* static method.
|
||
|
|
*/
|
||
|
|
public static Initializer byCallWithParams(com.fr.third.javassist.CtClass methodClass,
|
||
|
|
String methodName, String[] stringParams) {
|
||
|
|
MethodInitializer i = new MethodInitializer();
|
||
|
|
i.objectType = methodClass;
|
||
|
|
i.methodName = methodName;
|
||
|
|
i.stringParams = stringParams;
|
||
|
|
i.withConstructorParams = true;
|
||
|
|
return i;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Makes an initializer creating a new array.
|
||
|
|
*
|
||
|
|
* @param type the type of the array.
|
||
|
|
* @param size the size of the array.
|
||
|
|
* @throws NotFoundException if the type of the array components
|
||
|
|
* is not found.
|
||
|
|
*/
|
||
|
|
public static Initializer byNewArray(com.fr.third.javassist.CtClass type, int size)
|
||
|
|
throws NotFoundException
|
||
|
|
{
|
||
|
|
return new ArrayInitializer(type.getComponentType(), size);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Makes an initializer creating a new multi-dimensional array.
|
||
|
|
*
|
||
|
|
* @param type the type of the array.
|
||
|
|
* @param sizes an <code>int</code> array of the size in every
|
||
|
|
* dimension.
|
||
|
|
* The first element is the size in the first
|
||
|
|
* dimension. The second is in the second, etc.
|
||
|
|
*/
|
||
|
|
public static Initializer byNewArray(com.fr.third.javassist.CtClass type, int[] sizes) {
|
||
|
|
return new MultiArrayInitializer(type, sizes);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Makes an initializer.
|
||
|
|
*
|
||
|
|
* @param source initializer expression.
|
||
|
|
*/
|
||
|
|
public static Initializer byExpr(String source) {
|
||
|
|
return new CodeInitializer(source);
|
||
|
|
}
|
||
|
|
|
||
|
|
static Initializer byExpr(ASTree source) {
|
||
|
|
return new PtreeInitializer(source);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Check whether this initializer is valid for the field type.
|
||
|
|
// If it is invaild, this method throws an exception.
|
||
|
|
void check(String desc) throws com.fr.third.javassist.CannotCompileException {}
|
||
|
|
|
||
|
|
// produce codes for initialization
|
||
|
|
abstract int compile(com.fr.third.javassist.CtClass type, String name, com.fr.third.javassist.bytecode.Bytecode code,
|
||
|
|
com.fr.third.javassist.CtClass[] parameters, Javac drv)
|
||
|
|
throws com.fr.third.javassist.CannotCompileException;
|
||
|
|
|
||
|
|
// produce codes for initialization
|
||
|
|
abstract int compileIfStatic(com.fr.third.javassist.CtClass type, String name,
|
||
|
|
com.fr.third.javassist.bytecode.Bytecode code, Javac drv) throws com.fr.third.javassist.CannotCompileException;
|
||
|
|
|
||
|
|
// returns the index of CONSTANT_Integer_info etc
|
||
|
|
// if the value is constant. Otherwise, 0.
|
||
|
|
int getConstantValue(com.fr.third.javassist.bytecode.ConstPool cp, com.fr.third.javassist.CtClass type) { return 0; }
|
||
|
|
}
|
||
|
|
|
||
|
|
static abstract class CodeInitializer0 extends Initializer {
|
||
|
|
abstract void compileExpr(Javac drv) throws CompileError;
|
||
|
|
|
||
|
|
int compile(com.fr.third.javassist.CtClass type, String name, com.fr.third.javassist.bytecode.Bytecode code,
|
||
|
|
com.fr.third.javassist.CtClass[] parameters, Javac drv)
|
||
|
|
throws com.fr.third.javassist.CannotCompileException
|
||
|
|
{
|
||
|
|
try {
|
||
|
|
code.addAload(0);
|
||
|
|
compileExpr(drv);
|
||
|
|
code.addPutfield(com.fr.third.javassist.bytecode.Bytecode.THIS, name, com.fr.third.javassist.bytecode.Descriptor.of(type));
|
||
|
|
return code.getMaxStack();
|
||
|
|
}
|
||
|
|
catch (CompileError e) {
|
||
|
|
throw new com.fr.third.javassist.CannotCompileException(e);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
int compileIfStatic(com.fr.third.javassist.CtClass type, String name, com.fr.third.javassist.bytecode.Bytecode code,
|
||
|
|
Javac drv) throws com.fr.third.javassist.CannotCompileException
|
||
|
|
{
|
||
|
|
try {
|
||
|
|
compileExpr(drv);
|
||
|
|
code.addPutstatic(com.fr.third.javassist.bytecode.Bytecode.THIS, name, com.fr.third.javassist.bytecode.Descriptor.of(type));
|
||
|
|
return code.getMaxStack();
|
||
|
|
}
|
||
|
|
catch (CompileError e) {
|
||
|
|
throw new com.fr.third.javassist.CannotCompileException(e);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
int getConstantValue2(com.fr.third.javassist.bytecode.ConstPool cp, com.fr.third.javassist.CtClass type, ASTree tree) {
|
||
|
|
if (type.isPrimitive()) {
|
||
|
|
if (tree instanceof IntConst) {
|
||
|
|
long value = ((IntConst)tree).get();
|
||
|
|
if (type == com.fr.third.javassist.CtClass.doubleType)
|
||
|
|
return cp.addDoubleInfo((double)value);
|
||
|
|
else if (type == com.fr.third.javassist.CtClass.floatType)
|
||
|
|
return cp.addFloatInfo((float)value);
|
||
|
|
else if (type == com.fr.third.javassist.CtClass.longType)
|
||
|
|
return cp.addLongInfo(value);
|
||
|
|
else if (type != com.fr.third.javassist.CtClass.voidType)
|
||
|
|
return cp.addIntegerInfo((int)value);
|
||
|
|
}
|
||
|
|
else if (tree instanceof DoubleConst) {
|
||
|
|
double value = ((DoubleConst)tree).get();
|
||
|
|
if (type == com.fr.third.javassist.CtClass.floatType)
|
||
|
|
return cp.addFloatInfo((float)value);
|
||
|
|
else if (type == com.fr.third.javassist.CtClass.doubleType)
|
||
|
|
return cp.addDoubleInfo(value);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else if (tree instanceof StringL
|
||
|
|
&& type.getName().equals(javaLangString))
|
||
|
|
return cp.addStringInfo(((StringL)tree).get());
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static class CodeInitializer extends CodeInitializer0 {
|
||
|
|
private String expression;
|
||
|
|
|
||
|
|
CodeInitializer(String expr) { expression = expr; }
|
||
|
|
|
||
|
|
void compileExpr(Javac drv) throws CompileError {
|
||
|
|
drv.compileExpr(expression);
|
||
|
|
}
|
||
|
|
|
||
|
|
int getConstantValue(com.fr.third.javassist.bytecode.ConstPool cp, com.fr.third.javassist.CtClass type) {
|
||
|
|
try {
|
||
|
|
ASTree t = Javac.parseExpr(expression, new SymbolTable());
|
||
|
|
return getConstantValue2(cp, type, t);
|
||
|
|
}
|
||
|
|
catch (CompileError e) {
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static class PtreeInitializer extends CodeInitializer0 {
|
||
|
|
private ASTree expression;
|
||
|
|
|
||
|
|
PtreeInitializer(ASTree expr) { expression = expr; }
|
||
|
|
|
||
|
|
void compileExpr(Javac drv) throws CompileError {
|
||
|
|
drv.compileExpr(expression);
|
||
|
|
}
|
||
|
|
|
||
|
|
int getConstantValue(com.fr.third.javassist.bytecode.ConstPool cp, com.fr.third.javassist.CtClass type) {
|
||
|
|
return getConstantValue2(cp, type, expression);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* A field initialized with a parameter passed to the constructor
|
||
|
|
* of the class containing that field.
|
||
|
|
*/
|
||
|
|
static class ParamInitializer extends Initializer {
|
||
|
|
int nthParam;
|
||
|
|
|
||
|
|
ParamInitializer() {}
|
||
|
|
|
||
|
|
int compile(com.fr.third.javassist.CtClass type, String name, com.fr.third.javassist.bytecode.Bytecode code,
|
||
|
|
com.fr.third.javassist.CtClass[] parameters, Javac drv)
|
||
|
|
throws com.fr.third.javassist.CannotCompileException
|
||
|
|
{
|
||
|
|
if (parameters != null && nthParam < parameters.length) {
|
||
|
|
code.addAload(0);
|
||
|
|
int nth = nthParamToLocal(nthParam, parameters, false);
|
||
|
|
int s = code.addLoad(nth, type) + 1;
|
||
|
|
code.addPutfield(com.fr.third.javassist.bytecode.Bytecode.THIS, name, com.fr.third.javassist.bytecode.Descriptor.of(type));
|
||
|
|
return s; // stack size
|
||
|
|
}
|
||
|
|
else
|
||
|
|
return 0; // do not initialize
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Computes the index of the local variable that the n-th parameter
|
||
|
|
* is assigned to.
|
||
|
|
*
|
||
|
|
* @param nth n-th parameter
|
||
|
|
* @param params list of parameter types
|
||
|
|
* @param isStatic true if the method is static.
|
||
|
|
*/
|
||
|
|
static int nthParamToLocal(int nth, com.fr.third.javassist.CtClass[] params,
|
||
|
|
boolean isStatic) {
|
||
|
|
com.fr.third.javassist.CtClass longType = com.fr.third.javassist.CtClass.longType;
|
||
|
|
com.fr.third.javassist.CtClass doubleType = com.fr.third.javassist.CtClass.doubleType;
|
||
|
|
int k;
|
||
|
|
if (isStatic)
|
||
|
|
k = 0;
|
||
|
|
else
|
||
|
|
k = 1; // 0 is THIS.
|
||
|
|
|
||
|
|
for (int i = 0; i < nth; ++i) {
|
||
|
|
com.fr.third.javassist.CtClass type = params[i];
|
||
|
|
if (type == longType || type == doubleType)
|
||
|
|
k += 2;
|
||
|
|
else
|
||
|
|
++k;
|
||
|
|
}
|
||
|
|
|
||
|
|
return k;
|
||
|
|
}
|
||
|
|
|
||
|
|
int compileIfStatic(com.fr.third.javassist.CtClass type, String name, com.fr.third.javassist.bytecode.Bytecode code,
|
||
|
|
Javac drv) throws com.fr.third.javassist.CannotCompileException
|
||
|
|
{
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* A field initialized with an object created by the new operator.
|
||
|
|
*/
|
||
|
|
static class NewInitializer extends Initializer {
|
||
|
|
com.fr.third.javassist.CtClass objectType;
|
||
|
|
String[] stringParams;
|
||
|
|
boolean withConstructorParams;
|
||
|
|
|
||
|
|
NewInitializer() {}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Produces codes in which a new object is created and assigned to
|
||
|
|
* the field as the initial value.
|
||
|
|
*/
|
||
|
|
int compile(com.fr.third.javassist.CtClass type, String name, com.fr.third.javassist.bytecode.Bytecode code,
|
||
|
|
com.fr.third.javassist.CtClass[] parameters, Javac drv)
|
||
|
|
throws com.fr.third.javassist.CannotCompileException
|
||
|
|
{
|
||
|
|
int stacksize;
|
||
|
|
|
||
|
|
code.addAload(0);
|
||
|
|
code.addNew(objectType);
|
||
|
|
code.add(com.fr.third.javassist.bytecode.Bytecode.DUP);
|
||
|
|
code.addAload(0);
|
||
|
|
|
||
|
|
if (stringParams == null)
|
||
|
|
stacksize = 4;
|
||
|
|
else
|
||
|
|
stacksize = compileStringParameter(code) + 4;
|
||
|
|
|
||
|
|
if (withConstructorParams)
|
||
|
|
stacksize += CtNewWrappedMethod.compileParameterList(code,
|
||
|
|
parameters, 1);
|
||
|
|
|
||
|
|
code.addInvokespecial(objectType, "<init>", getDescriptor());
|
||
|
|
code.addPutfield(com.fr.third.javassist.bytecode.Bytecode.THIS, name, com.fr.third.javassist.bytecode.Descriptor.of(type));
|
||
|
|
return stacksize;
|
||
|
|
}
|
||
|
|
|
||
|
|
private String getDescriptor() {
|
||
|
|
final String desc3
|
||
|
|
= "(Ljava/lang/Object;[Ljava/lang/String;[Ljava/lang/Object;)V";
|
||
|
|
|
||
|
|
if (stringParams == null)
|
||
|
|
if (withConstructorParams)
|
||
|
|
return "(Ljava/lang/Object;[Ljava/lang/Object;)V";
|
||
|
|
else
|
||
|
|
return "(Ljava/lang/Object;)V";
|
||
|
|
else
|
||
|
|
if (withConstructorParams)
|
||
|
|
return desc3;
|
||
|
|
else
|
||
|
|
return "(Ljava/lang/Object;[Ljava/lang/String;)V";
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Produces codes for a static field.
|
||
|
|
*/
|
||
|
|
int compileIfStatic(com.fr.third.javassist.CtClass type, String name, com.fr.third.javassist.bytecode.Bytecode code,
|
||
|
|
Javac drv) throws com.fr.third.javassist.CannotCompileException
|
||
|
|
{
|
||
|
|
String desc;
|
||
|
|
|
||
|
|
code.addNew(objectType);
|
||
|
|
code.add(com.fr.third.javassist.bytecode.Bytecode.DUP);
|
||
|
|
|
||
|
|
int stacksize = 2;
|
||
|
|
if (stringParams == null)
|
||
|
|
desc = "()V";
|
||
|
|
else {
|
||
|
|
desc = "([Ljava/lang/String;)V";
|
||
|
|
stacksize += compileStringParameter(code);
|
||
|
|
}
|
||
|
|
|
||
|
|
code.addInvokespecial(objectType, "<init>", desc);
|
||
|
|
code.addPutstatic(com.fr.third.javassist.bytecode.Bytecode.THIS, name, com.fr.third.javassist.bytecode.Descriptor.of(type));
|
||
|
|
return stacksize;
|
||
|
|
}
|
||
|
|
|
||
|
|
protected final int compileStringParameter(com.fr.third.javassist.bytecode.Bytecode code)
|
||
|
|
throws com.fr.third.javassist.CannotCompileException
|
||
|
|
{
|
||
|
|
int nparam = stringParams.length;
|
||
|
|
code.addIconst(nparam);
|
||
|
|
code.addAnewarray(javaLangString);
|
||
|
|
for (int j = 0; j < nparam; ++j) {
|
||
|
|
code.add(com.fr.third.javassist.bytecode.Bytecode.DUP); // dup
|
||
|
|
code.addIconst(j); // iconst_<j>
|
||
|
|
code.addLdc(stringParams[j]); // ldc ...
|
||
|
|
code.add(com.fr.third.javassist.bytecode.Bytecode.AASTORE); // aastore
|
||
|
|
}
|
||
|
|
|
||
|
|
return 4;
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* A field initialized with the result of a static method call.
|
||
|
|
*/
|
||
|
|
static class MethodInitializer extends NewInitializer {
|
||
|
|
String methodName;
|
||
|
|
// the method class is specified by objectType.
|
||
|
|
|
||
|
|
MethodInitializer() {}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Produces codes in which a new object is created and assigned to
|
||
|
|
* the field as the initial value.
|
||
|
|
*/
|
||
|
|
int compile(com.fr.third.javassist.CtClass type, String name, com.fr.third.javassist.bytecode.Bytecode code,
|
||
|
|
com.fr.third.javassist.CtClass[] parameters, Javac drv)
|
||
|
|
throws com.fr.third.javassist.CannotCompileException
|
||
|
|
{
|
||
|
|
int stacksize;
|
||
|
|
|
||
|
|
code.addAload(0);
|
||
|
|
code.addAload(0);
|
||
|
|
|
||
|
|
if (stringParams == null)
|
||
|
|
stacksize = 2;
|
||
|
|
else
|
||
|
|
stacksize = compileStringParameter(code) + 2;
|
||
|
|
|
||
|
|
if (withConstructorParams)
|
||
|
|
stacksize += CtNewWrappedMethod.compileParameterList(code,
|
||
|
|
parameters, 1);
|
||
|
|
|
||
|
|
String typeDesc = com.fr.third.javassist.bytecode.Descriptor.of(type);
|
||
|
|
String mDesc = getDescriptor() + typeDesc;
|
||
|
|
code.addInvokestatic(objectType, methodName, mDesc);
|
||
|
|
code.addPutfield(com.fr.third.javassist.bytecode.Bytecode.THIS, name, typeDesc);
|
||
|
|
return stacksize;
|
||
|
|
}
|
||
|
|
|
||
|
|
private String getDescriptor() {
|
||
|
|
final String desc3
|
||
|
|
= "(Ljava/lang/Object;[Ljava/lang/String;[Ljava/lang/Object;)";
|
||
|
|
|
||
|
|
if (stringParams == null)
|
||
|
|
if (withConstructorParams)
|
||
|
|
return "(Ljava/lang/Object;[Ljava/lang/Object;)";
|
||
|
|
else
|
||
|
|
return "(Ljava/lang/Object;)";
|
||
|
|
else
|
||
|
|
if (withConstructorParams)
|
||
|
|
return desc3;
|
||
|
|
else
|
||
|
|
return "(Ljava/lang/Object;[Ljava/lang/String;)";
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Produces codes for a static field.
|
||
|
|
*/
|
||
|
|
int compileIfStatic(com.fr.third.javassist.CtClass type, String name, com.fr.third.javassist.bytecode.Bytecode code,
|
||
|
|
Javac drv) throws com.fr.third.javassist.CannotCompileException
|
||
|
|
{
|
||
|
|
String desc;
|
||
|
|
|
||
|
|
int stacksize = 1;
|
||
|
|
if (stringParams == null)
|
||
|
|
desc = "()";
|
||
|
|
else {
|
||
|
|
desc = "([Ljava/lang/String;)";
|
||
|
|
stacksize += compileStringParameter(code);
|
||
|
|
}
|
||
|
|
|
||
|
|
String typeDesc = com.fr.third.javassist.bytecode.Descriptor.of(type);
|
||
|
|
code.addInvokestatic(objectType, methodName, desc + typeDesc);
|
||
|
|
code.addPutstatic(com.fr.third.javassist.bytecode.Bytecode.THIS, name, typeDesc);
|
||
|
|
return stacksize;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static class IntInitializer extends Initializer {
|
||
|
|
int value;
|
||
|
|
|
||
|
|
IntInitializer(int v) { value = v; }
|
||
|
|
|
||
|
|
void check(String desc) throws com.fr.third.javassist.CannotCompileException {
|
||
|
|
char c = desc.charAt(0);
|
||
|
|
if (c != 'I' && c != 'S' && c != 'B' && c != 'C' && c != 'Z')
|
||
|
|
throw new com.fr.third.javassist.CannotCompileException("type mismatch");
|
||
|
|
}
|
||
|
|
|
||
|
|
int compile(com.fr.third.javassist.CtClass type, String name, com.fr.third.javassist.bytecode.Bytecode code,
|
||
|
|
com.fr.third.javassist.CtClass[] parameters, Javac drv)
|
||
|
|
throws com.fr.third.javassist.CannotCompileException
|
||
|
|
{
|
||
|
|
code.addAload(0);
|
||
|
|
code.addIconst(value);
|
||
|
|
code.addPutfield(com.fr.third.javassist.bytecode.Bytecode.THIS, name, com.fr.third.javassist.bytecode.Descriptor.of(type));
|
||
|
|
return 2; // stack size
|
||
|
|
}
|
||
|
|
|
||
|
|
int compileIfStatic(com.fr.third.javassist.CtClass type, String name, com.fr.third.javassist.bytecode.Bytecode code,
|
||
|
|
Javac drv) throws com.fr.third.javassist.CannotCompileException
|
||
|
|
{
|
||
|
|
code.addIconst(value);
|
||
|
|
code.addPutstatic(com.fr.third.javassist.bytecode.Bytecode.THIS, name, com.fr.third.javassist.bytecode.Descriptor.of(type));
|
||
|
|
return 1; // stack size
|
||
|
|
}
|
||
|
|
|
||
|
|
int getConstantValue(com.fr.third.javassist.bytecode.ConstPool cp, com.fr.third.javassist.CtClass type) {
|
||
|
|
return cp.addIntegerInfo(value);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static class LongInitializer extends Initializer {
|
||
|
|
long value;
|
||
|
|
|
||
|
|
LongInitializer(long v) { value = v; }
|
||
|
|
|
||
|
|
void check(String desc) throws com.fr.third.javassist.CannotCompileException {
|
||
|
|
if (!desc.equals("J"))
|
||
|
|
throw new com.fr.third.javassist.CannotCompileException("type mismatch");
|
||
|
|
}
|
||
|
|
|
||
|
|
int compile(com.fr.third.javassist.CtClass type, String name, com.fr.third.javassist.bytecode.Bytecode code,
|
||
|
|
com.fr.third.javassist.CtClass[] parameters, Javac drv)
|
||
|
|
throws com.fr.third.javassist.CannotCompileException
|
||
|
|
{
|
||
|
|
code.addAload(0);
|
||
|
|
code.addLdc2w(value);
|
||
|
|
code.addPutfield(com.fr.third.javassist.bytecode.Bytecode.THIS, name, com.fr.third.javassist.bytecode.Descriptor.of(type));
|
||
|
|
return 3; // stack size
|
||
|
|
}
|
||
|
|
|
||
|
|
int compileIfStatic(com.fr.third.javassist.CtClass type, String name, com.fr.third.javassist.bytecode.Bytecode code,
|
||
|
|
Javac drv) throws com.fr.third.javassist.CannotCompileException
|
||
|
|
{
|
||
|
|
code.addLdc2w(value);
|
||
|
|
code.addPutstatic(com.fr.third.javassist.bytecode.Bytecode.THIS, name, com.fr.third.javassist.bytecode.Descriptor.of(type));
|
||
|
|
return 2; // stack size
|
||
|
|
}
|
||
|
|
|
||
|
|
int getConstantValue(com.fr.third.javassist.bytecode.ConstPool cp, com.fr.third.javassist.CtClass type) {
|
||
|
|
if (type == com.fr.third.javassist.CtClass.longType)
|
||
|
|
return cp.addLongInfo(value);
|
||
|
|
else
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static class FloatInitializer extends Initializer {
|
||
|
|
float value;
|
||
|
|
|
||
|
|
FloatInitializer(float v) { value = v; }
|
||
|
|
|
||
|
|
void check(String desc) throws com.fr.third.javassist.CannotCompileException {
|
||
|
|
if (!desc.equals("F"))
|
||
|
|
throw new com.fr.third.javassist.CannotCompileException("type mismatch");
|
||
|
|
}
|
||
|
|
|
||
|
|
int compile(com.fr.third.javassist.CtClass type, String name, com.fr.third.javassist.bytecode.Bytecode code,
|
||
|
|
com.fr.third.javassist.CtClass[] parameters, Javac drv)
|
||
|
|
throws com.fr.third.javassist.CannotCompileException
|
||
|
|
{
|
||
|
|
code.addAload(0);
|
||
|
|
code.addFconst(value);
|
||
|
|
code.addPutfield(com.fr.third.javassist.bytecode.Bytecode.THIS, name, com.fr.third.javassist.bytecode.Descriptor.of(type));
|
||
|
|
return 3; // stack size
|
||
|
|
}
|
||
|
|
|
||
|
|
int compileIfStatic(com.fr.third.javassist.CtClass type, String name, com.fr.third.javassist.bytecode.Bytecode code,
|
||
|
|
Javac drv) throws com.fr.third.javassist.CannotCompileException
|
||
|
|
{
|
||
|
|
code.addFconst(value);
|
||
|
|
code.addPutstatic(com.fr.third.javassist.bytecode.Bytecode.THIS, name, com.fr.third.javassist.bytecode.Descriptor.of(type));
|
||
|
|
return 2; // stack size
|
||
|
|
}
|
||
|
|
|
||
|
|
int getConstantValue(com.fr.third.javassist.bytecode.ConstPool cp, com.fr.third.javassist.CtClass type) {
|
||
|
|
if (type == com.fr.third.javassist.CtClass.floatType)
|
||
|
|
return cp.addFloatInfo(value);
|
||
|
|
else
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static class DoubleInitializer extends Initializer {
|
||
|
|
double value;
|
||
|
|
|
||
|
|
DoubleInitializer(double v) { value = v; }
|
||
|
|
|
||
|
|
void check(String desc) throws com.fr.third.javassist.CannotCompileException {
|
||
|
|
if (!desc.equals("D"))
|
||
|
|
throw new com.fr.third.javassist.CannotCompileException("type mismatch");
|
||
|
|
}
|
||
|
|
|
||
|
|
int compile(com.fr.third.javassist.CtClass type, String name, com.fr.third.javassist.bytecode.Bytecode code,
|
||
|
|
com.fr.third.javassist.CtClass[] parameters, Javac drv)
|
||
|
|
throws com.fr.third.javassist.CannotCompileException
|
||
|
|
{
|
||
|
|
code.addAload(0);
|
||
|
|
code.addLdc2w(value);
|
||
|
|
code.addPutfield(com.fr.third.javassist.bytecode.Bytecode.THIS, name, com.fr.third.javassist.bytecode.Descriptor.of(type));
|
||
|
|
return 3; // stack size
|
||
|
|
}
|
||
|
|
|
||
|
|
int compileIfStatic(com.fr.third.javassist.CtClass type, String name, com.fr.third.javassist.bytecode.Bytecode code,
|
||
|
|
Javac drv) throws com.fr.third.javassist.CannotCompileException
|
||
|
|
{
|
||
|
|
code.addLdc2w(value);
|
||
|
|
code.addPutstatic(com.fr.third.javassist.bytecode.Bytecode.THIS, name, com.fr.third.javassist.bytecode.Descriptor.of(type));
|
||
|
|
return 2; // stack size
|
||
|
|
}
|
||
|
|
|
||
|
|
int getConstantValue(com.fr.third.javassist.bytecode.ConstPool cp, com.fr.third.javassist.CtClass type) {
|
||
|
|
if (type == com.fr.third.javassist.CtClass.doubleType)
|
||
|
|
return cp.addDoubleInfo(value);
|
||
|
|
else
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static class StringInitializer extends Initializer {
|
||
|
|
String value;
|
||
|
|
|
||
|
|
StringInitializer(String v) { value = v; }
|
||
|
|
|
||
|
|
int compile(com.fr.third.javassist.CtClass type, String name, com.fr.third.javassist.bytecode.Bytecode code,
|
||
|
|
com.fr.third.javassist.CtClass[] parameters, Javac drv)
|
||
|
|
throws com.fr.third.javassist.CannotCompileException
|
||
|
|
{
|
||
|
|
code.addAload(0);
|
||
|
|
code.addLdc(value);
|
||
|
|
code.addPutfield(com.fr.third.javassist.bytecode.Bytecode.THIS, name, com.fr.third.javassist.bytecode.Descriptor.of(type));
|
||
|
|
return 2; // stack size
|
||
|
|
}
|
||
|
|
|
||
|
|
int compileIfStatic(com.fr.third.javassist.CtClass type, String name, com.fr.third.javassist.bytecode.Bytecode code,
|
||
|
|
Javac drv) throws com.fr.third.javassist.CannotCompileException
|
||
|
|
{
|
||
|
|
code.addLdc(value);
|
||
|
|
code.addPutstatic(com.fr.third.javassist.bytecode.Bytecode.THIS, name, com.fr.third.javassist.bytecode.Descriptor.of(type));
|
||
|
|
return 1; // stack size
|
||
|
|
}
|
||
|
|
|
||
|
|
int getConstantValue(ConstPool cp, com.fr.third.javassist.CtClass type) {
|
||
|
|
if (type.getName().equals(javaLangString))
|
||
|
|
return cp.addStringInfo(value);
|
||
|
|
else
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static class ArrayInitializer extends Initializer {
|
||
|
|
com.fr.third.javassist.CtClass type;
|
||
|
|
int size;
|
||
|
|
|
||
|
|
ArrayInitializer(com.fr.third.javassist.CtClass t, int s) { type = t; size = s; }
|
||
|
|
|
||
|
|
private void addNewarray(com.fr.third.javassist.bytecode.Bytecode code) {
|
||
|
|
if (type.isPrimitive())
|
||
|
|
code.addNewarray(((CtPrimitiveType)type).getArrayType(),
|
||
|
|
size);
|
||
|
|
else
|
||
|
|
code.addAnewarray(type, size);
|
||
|
|
}
|
||
|
|
|
||
|
|
int compile(com.fr.third.javassist.CtClass type, String name, com.fr.third.javassist.bytecode.Bytecode code,
|
||
|
|
com.fr.third.javassist.CtClass[] parameters, Javac drv)
|
||
|
|
throws com.fr.third.javassist.CannotCompileException
|
||
|
|
{
|
||
|
|
code.addAload(0);
|
||
|
|
addNewarray(code);
|
||
|
|
code.addPutfield(com.fr.third.javassist.bytecode.Bytecode.THIS, name, com.fr.third.javassist.bytecode.Descriptor.of(type));
|
||
|
|
return 2; // stack size
|
||
|
|
}
|
||
|
|
|
||
|
|
int compileIfStatic(com.fr.third.javassist.CtClass type, String name, com.fr.third.javassist.bytecode.Bytecode code,
|
||
|
|
Javac drv) throws com.fr.third.javassist.CannotCompileException
|
||
|
|
{
|
||
|
|
addNewarray(code);
|
||
|
|
code.addPutstatic(com.fr.third.javassist.bytecode.Bytecode.THIS, name, com.fr.third.javassist.bytecode.Descriptor.of(type));
|
||
|
|
return 1; // stack size
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static class MultiArrayInitializer extends Initializer {
|
||
|
|
com.fr.third.javassist.CtClass type;
|
||
|
|
int[] dim;
|
||
|
|
|
||
|
|
MultiArrayInitializer(com.fr.third.javassist.CtClass t, int[] d) { type = t; dim = d; }
|
||
|
|
|
||
|
|
void check(String desc) throws com.fr.third.javassist.CannotCompileException {
|
||
|
|
if (desc.charAt(0) != '[')
|
||
|
|
throw new com.fr.third.javassist.CannotCompileException("type mismatch");
|
||
|
|
}
|
||
|
|
|
||
|
|
int compile(com.fr.third.javassist.CtClass type, String name, com.fr.third.javassist.bytecode.Bytecode code,
|
||
|
|
com.fr.third.javassist.CtClass[] parameters, Javac drv)
|
||
|
|
throws com.fr.third.javassist.CannotCompileException
|
||
|
|
{
|
||
|
|
code.addAload(0);
|
||
|
|
int s = code.addMultiNewarray(type, dim);
|
||
|
|
code.addPutfield(com.fr.third.javassist.bytecode.Bytecode.THIS, name, com.fr.third.javassist.bytecode.Descriptor.of(type));
|
||
|
|
return s + 1; // stack size
|
||
|
|
}
|
||
|
|
|
||
|
|
int compileIfStatic(CtClass type, String name, com.fr.third.javassist.bytecode.Bytecode code,
|
||
|
|
Javac drv) throws CannotCompileException
|
||
|
|
{
|
||
|
|
int s = code.addMultiNewarray(type, dim);
|
||
|
|
code.addPutstatic(com.fr.third.javassist.bytecode.Bytecode.THIS, name, com.fr.third.javassist.bytecode.Descriptor.of(type));
|
||
|
|
return s; // stack size
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|