lucee.transformer.bytecode.literal.LitBoolean.java Source code

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Here is the source code for lucee.transformer.bytecode.literal.LitBoolean.java

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/**
 *
 * Copyright (c) 2014, the Railo Company Ltd. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either 
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public 
 * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
 * 
 **/
package lucee.transformer.bytecode.literal;

import lucee.runtime.op.Caster;
import lucee.transformer.bytecode.BytecodeContext;
import lucee.transformer.bytecode.Literal;
import lucee.transformer.bytecode.Position;
import lucee.transformer.bytecode.expression.ExprBoolean;
import lucee.transformer.bytecode.expression.ExpressionBase;
import lucee.transformer.bytecode.util.Types;

import org.objectweb.asm.Opcodes;
import org.objectweb.asm.Type;
import org.objectweb.asm.commons.GeneratorAdapter;

/**
 * Literal Boolean
 */
public final class LitBoolean extends ExpressionBase implements Literal, ExprBoolean {

    /**
     * @see java.lang.Object#toString()
     */
    @Override
    public String toString() {
        return b + "";
    }

    private boolean b;

    public static final LitBoolean TRUE = new LitBoolean(true, null, null);
    public static final LitBoolean FALSE = new LitBoolean(false, null, null);

    public static ExprBoolean toExprBoolean(boolean b, Position start, Position end) {
        return new LitBoolean(b, start, end);
    }

    public static ExprBoolean toExprBoolean(boolean b) {
        return new LitBoolean(b, null, null);
    }

    /**
     * constructor of the class
     * @param b 
     * @param line 
     */
    public LitBoolean(boolean b, Position start, Position end) {
        super(start, end);
        this.b = b;
    }

    /**
     * @return return value as double value
     */
    public double getDoubleValue() {
        return Caster.toDoubleValue(b);
    }

    /**
     * @return return value as Double Object
     */
    public Double getDouble() {
        return Caster.toDouble(b);
    }

    /**
     * @see lucee.transformer.bytecode.Literal#getString()
     */
    public String getString() {
        return Caster.toString(b);
    }

    /**
     * @return return value as a Boolean Object
     */
    public Boolean getBoolean() {
        return Caster.toBoolean(b);
    }

    /**
     * @return return value as a boolean value
     */
    public boolean getBooleanValue() {
        return b;
    }

    /**
     *
     * @see lucee.transformer.bytecode.expression.ExpressionBase#_writeOut(org.objectweb.asm.commons.GeneratorAdapter, int)
     */
    public Type _writeOut(BytecodeContext bc, int mode) {
        GeneratorAdapter adapter = bc.getAdapter();

        if (mode == MODE_REF) {
            adapter.getStatic(Types.BOOLEAN, b ? "TRUE" : "FALSE", Types.BOOLEAN);
            return Types.BOOLEAN;
        }
        adapter.visitInsn(b ? Opcodes.ICONST_1 : Opcodes.ICONST_0);
        return Types.BOOLEAN_VALUE;
    }

    /**
     * @see lucee.transformer.bytecode.Literal#getDouble(java.lang.Double)
     */
    public Double getDouble(Double defaultValue) {
        return getDouble();
    }

    /**
     * @see lucee.transformer.bytecode.Literal#getBoolean(java.lang.Boolean)
     */
    public Boolean getBoolean(Boolean defaultValue) {
        return getBoolean();
    }

    /* *
     * @see lucee.transformer.bytecode.expression.Expression#getType()
     * /
    public int getType() {
    return Types._BOOLEAN;
    }*/
}