org.formulacompiler.compiler.internal.bytecode.ExpressionCompilerForPrecisionBigDecimals

Introduction

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

Source

/*
 * 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.NumericType;
import org.formulacompiler.runtime.ScaledLong;
import org.objectweb.asm.Opcodes;

abstract class ExpressionCompilerForPrecisionBigDecimals_Base extends ExpressionCompilerForNumbers {
    private static final String RUNTIME_CONTEXT_DESCRIPTOR = TypeCompilerForPrecisionBigDecimals.RUNTIME_CONTEXT_DESCRIPTOR;
    private static final String RUNTIME_CONTEXT_NAME = TypeCompilerForPrecisionBigDecimals.RUNTIME_CONTEXT_NAME;

    private static final String BNAME = TypeCompilerForBigDecimals.BNAME;
    private static final String B = TypeCompilerForBigDecimals.B;
    private static final String B2I = "(" + B + ")I";

    private final TypeCompilerForPrecisionBigDecimals bigCompiler = ((TypeCompilerForPrecisionBigDecimals) typeCompiler());

    public ExpressionCompilerForPrecisionBigDecimals_Base(MethodCompiler _methodCompiler,
            NumericType _numericType) {
        super(_methodCompiler, _numericType);
    }

    protected final void compile_mathContext() {
        this.bigCompiler.buildStaticContext();
        mv().visitFieldInsn(Opcodes.GETSTATIC, typeCompiler().rootCompiler().classInternalName(),
                RUNTIME_CONTEXT_NAME, RUNTIME_CONTEXT_DESCRIPTOR);
    }

    protected final void compileValueAdjustment() {
        // No adjustment as precision is only a minimum, not an absolute.
    }

    @Override
    protected void compileConversionFrom(ScaledLong _scale) throws CompilerException {
        compile_util_fromScaledLong(_scale.value());
    }

    @Override
    protected void compileConversionTo(ScaledLong _scale) throws CompilerException {
        compile_util_toScaledLong(_scale.value());
    }

    @Override
    protected int compileComparison(int _ifOpcode, int _comparisonOpcode) throws CompilerException {
        mv().visitMethodInsn(Opcodes.INVOKEVIRTUAL, BNAME, "compareTo", B2I);
        return _ifOpcode;
    }

    protected abstract void compile_util_fromScaledLong(int _b) throws CompilerException;

    protected abstract void compile_util_toScaledLong(int _b) throws CompilerException;

}

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

Introduction

Source