/*
* 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.ArrayDescriptor;
import org.formulacompiler.compiler.internal.expressions.DataType;
import org.formulacompiler.compiler.internal.expressions.ExpressionNode;
import org.formulacompiler.compiler.internal.expressions.ExpressionNodeForArrayReference;
import org.formulacompiler.compiler.internal.expressions.ExpressionNodeForConstantValue;
import org.objectweb.asm.FieldVisitor;
import org.objectweb.asm.Label;
import org.objectweb.asm.Opcodes;
import org.objectweb.asm.Type;
import org.objectweb.asm.commons.GeneratorAdapter;
final class ArrayAccessorForConstDataCompiler extends ArrayAccessorCompiler
{
public ArrayAccessorForConstDataCompiler( SectionCompiler _section, String _name,
ExpressionNodeForArrayReference _node )
{
super( _section, "$constarr$" + _name, _node );
}
@Override
protected void compileBody() throws CompilerException
{
final GeneratorAdapter mv = mv();
final ArrayDescriptor dim = this.arrayNode.arrayDescriptor();
final int n = dim.numberOfElements();
final DataType eltDataType = this.arrayNode.getDataType();
final TypeCompiler eltCompiler = section().engineCompiler().typeCompiler( eltDataType );
final Type eltType = eltCompiler.type();
// private double[] xy;
final FieldVisitor fv = cw().visitField( Opcodes.ACC_PRIVATE, methodName(), arrayDescriptor(), null, null );
fv.visitEnd();
// if (this.xy == null) {
final Label skipInit = mv.newLabel();
mv.loadThis();
mv.visitFieldInsn( Opcodes.GETFIELD, section().classInternalName(), methodName(), arrayDescriptor() );
mv.ifNonNull( skipInit );
// ... new double[ n ]
mv.loadThis();
mv.push( n );
mv.newArray( eltType );
// ... { c1, c2, ... }
int i = 0;
for (ExpressionNode elt : this.arrayNode.arguments()) {
if (elt instanceof ExpressionNodeForConstantValue) {
mv.visitInsn( Opcodes.DUP );
mv.push( i );
ExpressionNodeForConstantValue constElt = (ExpressionNodeForConstantValue) elt;
eltCompiler.compileConst( mv, constElt.value() );
mv.arrayStore( eltType );
}
i++;
}
// this.xy *=* new double[] { ... }
mv.visitFieldInsn( Opcodes.PUTFIELD, section().classInternalName(), methodName(), arrayDescriptor() );
// }
// return this.xy;
mv.mark( skipInit );
mv.loadThis();
mv.visitFieldInsn( Opcodes.GETFIELD, section().classInternalName(), methodName(), arrayDescriptor() );
mv.visitInsn( Opcodes.ARETURN );
}
}