org.formulacompiler.compiler.internal.bytecode.HelperCompilerForDatabaseMatch.java Source code

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Here is the source code for org.formulacompiler.compiler.internal.bytecode.HelperCompilerForDatabaseMatch.java

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/*
 * Copyright (c) 2006-2009 by Abacus Research AG, Switzerland.
 * All rights reserved.
 *
 * This file is part of the Abacus Formula Compiler (AFC).
 *
 * For commercial licensing, please contact sales(at)formulacompiler.com.
 *
 * AFC is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * AFC 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with AFC.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.formulacompiler.compiler.internal.bytecode;

import org.formulacompiler.compiler.CompilerException;
import org.formulacompiler.compiler.internal.expressions.ExpressionNode;
import org.formulacompiler.compiler.internal.expressions.LetDictionary.LetEntry;
import org.objectweb.asm.Label;
import org.objectweb.asm.Opcodes;
import org.objectweb.asm.commons.GeneratorAdapter;

final class HelperCompilerForDatabaseMatch extends MethodCompiler {
    private final ExpressionNode node;

    public HelperCompilerForDatabaseMatch(SectionCompiler _section, ExpressionNode _node,
            Iterable<LetEntry<Compilable>> _closure) {
        super(_section, Opcodes.ACC_FINAL, _section.newGetterName(), "(" + descriptorOf(_section, _closure) + ")Z");
        this.node = _node;
        addClosureToLetDict(_closure);
    }

    @Override
    protected void compileBody() throws CompilerException {
        final GeneratorAdapter mv = mv();
        final Label ifFalse = mv.newLabel();
        numericCompiler().compileTest(this.node, ifFalse);
        mv.push(true);
        mv.returnValue();
        mv.visitLabel(ifFalse);
        mv.push(false);
        mv.returnValue();
    }

}