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• ClassHelper.java

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org.codehaus.groovy.ast.ClassHelper Maven / Gradle / Ivy

/*
 * Copyright 2003-2007 the original author or authors.
 *
 * 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.
 */

package org.codehaus.groovy.ast;

import groovy.lang.Closure;
import groovy.lang.GString;
import groovy.lang.MetaClass;
import groovy.lang.Range;
import groovy.lang.Reference;
import groovy.lang.Script;

import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.List;
import java.util.Map;
import java.util.regex.Pattern;

import org.codehaus.groovy.runtime.GeneratedClosure;
import org.codehaus.groovy.vmplugin.VMPluginFactory;
import org.objectweb.asm.Opcodes;

/**
 * This class is a Helper for ClassNode and classes handling ClassNodes.
 * It does contain a set of predefined ClassNodes for the most used 
 * types and some code for cached ClassNode creation and basic 
 * ClassNode handling 
 * 
 * @author Jochen Theodorou
 */
public class ClassHelper {

    private static final Class[] classes = new Class[] {
        Object.class, Boolean.TYPE, Character.TYPE, Byte.TYPE, Short.TYPE,
        Integer.TYPE, Long.TYPE, Double.TYPE, Float.TYPE, Void.TYPE,
        Closure.class, GString.class, List.class, Map.class, Range.class,
        Pattern.class, Script.class, String.class,  Boolean.class, 
        Character.class, Byte.class, Short.class, Integer.class, Long.class,
        Double.class, Float.class, BigDecimal.class, BigInteger.class, Void.class,
        Reference.class, Class.class, MetaClass.class,     
    };

    private static final String[] primitiveClassNames = new String[] {
        "", "boolean", "char", "byte", "short", 
        "int", "long", "double", "float", "void"
    };
    
    public static final ClassNode 
        DYNAMIC_TYPE = new ClassNode(Object.class),  OBJECT_TYPE = DYNAMIC_TYPE,
        VOID_TYPE = new ClassNode(Void.TYPE),        CLOSURE_TYPE = new ClassNode(Closure.class),
        GSTRING_TYPE = new ClassNode(GString.class), LIST_TYPE = makeWithoutCaching(List.class),
        MAP_TYPE = new ClassNode(Map.class),         RANGE_TYPE = new ClassNode(Range.class),
        PATTERN_TYPE = new ClassNode(Pattern.class), STRING_TYPE = new ClassNode(String.class),
        SCRIPT_TYPE = new ClassNode(Script.class),   REFERENCE_TYPE = makeWithoutCaching(Reference.class),
        
        boolean_TYPE = new ClassNode(boolean.class),     char_TYPE = new ClassNode(char.class),
        byte_TYPE = new ClassNode(byte.class),           int_TYPE = new ClassNode(int.class),
        long_TYPE = new ClassNode(long.class),           short_TYPE = new ClassNode(short.class),
        double_TYPE = new ClassNode(double.class),       float_TYPE = new ClassNode(float.class),
        Byte_TYPE = new ClassNode(Byte.class),           Short_TYPE = new ClassNode(Short.class),
        Integer_TYPE = new ClassNode(Integer.class),     Long_TYPE = new ClassNode(Long.class),
        Character_TYPE = new ClassNode(Character.class), Float_TYPE = new ClassNode(Float.class),
        Double_TYPE = new ClassNode(Double.class),       Boolean_TYPE = new ClassNode(Boolean.class),
        BigInteger_TYPE =  new ClassNode(java.math.BigInteger.class),
        BigDecimal_TYPE = new ClassNode(java.math.BigDecimal.class),
        void_WRAPPER_TYPE = new ClassNode(Void.class),   
        
        CLASS_Type = new ClassNode(Class.class),        METACLASS_TYPE = new ClassNode(MetaClass.class),
        GENERATED_CLOSURE_Type = new ClassNode(GeneratedClosure.class),
        Enum_Type = new ClassNode("java.lang.Enum",0,OBJECT_TYPE);
        
    static {
        Enum_Type.isPrimaryNode = false;
    }
    
    private static ClassNode[] types = new ClassNode[] {
        OBJECT_TYPE,
        boolean_TYPE, char_TYPE, byte_TYPE, short_TYPE,
        int_TYPE, long_TYPE, double_TYPE, float_TYPE,
        VOID_TYPE, CLOSURE_TYPE, GSTRING_TYPE,
        LIST_TYPE, MAP_TYPE, RANGE_TYPE, PATTERN_TYPE,
        SCRIPT_TYPE, STRING_TYPE, Boolean_TYPE, Character_TYPE,
        Byte_TYPE, Short_TYPE, Integer_TYPE, Long_TYPE,
        Double_TYPE, Float_TYPE, BigDecimal_TYPE, BigInteger_TYPE, 
        void_WRAPPER_TYPE, REFERENCE_TYPE, CLASS_Type, METACLASS_TYPE,
        GENERATED_CLOSURE_Type, Enum_Type
    };

    
    private static ClassNode[] numbers = new ClassNode[] {
        char_TYPE, byte_TYPE, short_TYPE, int_TYPE, long_TYPE, 
        double_TYPE, float_TYPE, Short_TYPE, Byte_TYPE, Character_TYPE,
        Integer_TYPE, Float_TYPE, Long_TYPE, Double_TYPE, BigInteger_TYPE,
        BigDecimal_TYPE
    };

    protected static final ClassNode[] EMPTY_TYPE_ARRAY = {};
    
    public static final String OBJECT = "java.lang.Object";    
    
    
    /**
     * Creates an array of ClassNodes using an array of classes.
     * For each of the given classes a new ClassNode will be 
     * created
     * @see #make(Class)
     * @param classes an array of classes used to create the ClassNodes
     * @return an array of ClassNodes
     */
    public static ClassNode[] make(Class[] classes) {
    	ClassNode[] cns = new ClassNode[classes.length];
    	for (int i=0; i