gemlite.core.internal.asm.AsmHelper.java Source code

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Here is the source code for gemlite.core.internal.asm.AsmHelper.java

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/*                                                                         
 * Copyright 2010-2013 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 gemlite.core.internal.asm;

import java.util.HashSet;
import java.util.Set;

import org.objectweb.asm.Opcodes;
import org.objectweb.asm.tree.InsnList;
import org.objectweb.asm.tree.MethodInsnNode;

public class AsmHelper implements Opcodes {
    private final static Set<String> fullSimpleTypes;
    static {
        fullSimpleTypes = new HashSet<>();
        fullSimpleTypes.add("Ljava/lang/Integer;");
        fullSimpleTypes.add("Ljava/lang/Long;");
        fullSimpleTypes.add("Ljava/lang/Double;");
        fullSimpleTypes.add("Ljava/lang/Float;");
        fullSimpleTypes.add("Ljava/lang/Short;");
        fullSimpleTypes.add("Ljava/lang/Boolean;");
        fullSimpleTypes.add("Ljava/lang/Byte;");
    }

    public final static boolean needTypeConvert(String fromDesc, String toDesc) {
        return fullSimpleTypes.contains(toDesc) && !fromDesc.equals(toDesc);
    }

    public final static MethodInsnNode newMethodInsnNode(final int opcode, final String owner, final String name,
            final String desc, boolean isInterface) {
        //return new MethodInsnNode(opcode, owner, name, desc);
        return new MethodInsnNode(opcode, owner, name, desc, isInterface);
    }

    public final static int getReturnCodeByType(String typeDesc) {
        switch (typeDesc) {
        case "I":
            return Opcodes.IRETURN;
        case "J":
            return Opcodes.LRETURN;
        case "D":
            return Opcodes.DRETURN;
        case "F":
            return Opcodes.FRETURN;
        }

        return Opcodes.ARETURN;
    }

    public static void main(String[] args) {
        String s = AsmHelper.toViewName("LStkd;");
        System.out.println(s);
    }

    public final static String toViewName(String typeDesc) {
        switch (typeDesc) {
        case "I":
            return "Integer";
        case "J":
            return "Long";
        case "D":
            return "Double";
        case "F":
            return "Float";
        case "S":
            return "Short";
        case "Z":
            return "Boolean";
        case "B":
            return "Byte";
        case "V":
            return "void";
        default:
            typeDesc = typeDesc.substring(1, typeDesc.length() - 1).replace('/', '.');
        }
        return typeDesc;
    }

    public final static String toFullName(String typeDesc) {
        switch (typeDesc) {
        case "I":
            return "Ljava/lang/Integer;";
        case "J":
            return "Ljava/lang/Long;";
        case "D":
            return "Ljava/lang/Double;";
        case "F":
            return "Ljava/lang/Float;";
        case "S":
            return "Ljava/lang/Short";
        case "Z":
            return "Ljava/lang/Boolean";
        case "B":
            return "Ljava/lang/Byte";
        }
        return typeDesc;
    }

    public final static void addTypeConvert(InsnList insn, String typeDesc) {
        switch (typeDesc) {
        case "I":
            insn.add(newMethodInsnNode(INVOKESTATIC, "java/lang/Integer", "valueOf", "(I)Ljava/lang/Integer;",
                    false));
            break;
        case "J":
            insn.add(newMethodInsnNode(INVOKESTATIC, "java/lang/Long", "valueOf", "(J)Ljava/lang/Long;", false));
            break;
        case "D":
            insn.add(
                    newMethodInsnNode(INVOKESTATIC, "java/lang/Double", "valueOf", "(D)Ljava/lang/Double;", false));
            break;
        case "F":
            insn.add(newMethodInsnNode(INVOKESTATIC, "java/lang/Float", "valueOf", "(F)Ljava/lang/Float;", false));
            break;
        case "S":
            insn.add(newMethodInsnNode(INVOKESTATIC, "java/lang/Short", "valueOf", "(S)Ljava/lang/Short;", false));
            break;
        case "Z":
            insn.add(newMethodInsnNode(INVOKESTATIC, "java/lang/Boolean", "valueOf", "(Z)Ljava/lang/Boolean;",
                    false));
            break;
        case "B":
            insn.add(newMethodInsnNode(INVOKESTATIC, "java/lang/Byte", "valueOf", "(B)Ljava/lang/Byte;", false));
            break;
        }
    }
}