package railo.transformer.bytecode.visitor;
import org.objectweb.asm.Label;
import org.objectweb.asm.Opcodes;
import org.objectweb.asm.commons.GeneratorAdapter;
import railo.transformer.bytecode.BytecodeContext;
import railo.transformer.bytecode.Position;
import railo.transformer.bytecode.util.ExpressionUtil;
import railo.transformer.bytecode.util.Types;
/**
* @deprecated replaced with ForIntVisitor
*/
public final class ForConditionIntVisitor implements Opcodes, LoopVisitor {
private Label l0;
private Label l1;
private Label l2;
private Label l3;
private int i;
private Label lend;
private Label lbegin;
public int visitBegin(GeneratorAdapter adapter, int start, boolean isLocal) {
lend = new Label();
lbegin = new Label();
i=adapter.newLocal(Types.INT_VALUE);
l0 = new Label();
adapter.visitLabel(l0);
if(isLocal)adapter.loadLocal(start,Types.INT_VALUE);
else adapter.push(start);
//mv.visitInsn(ICONST_1);
adapter.visitVarInsn(ISTORE, i);
l1 = new Label();
adapter.visitLabel(l1);
l2 = new Label();
adapter.visitJumpInsn(GOTO, l2);
l3 = new Label();
adapter.visitLabel(l3);
return i;
}
public void visitEndBeforeCondition(BytecodeContext bc, int step, boolean isLocal,Position startline) {
GeneratorAdapter adapter = bc.getAdapter();
adapter.visitLabel(lbegin);
if(isLocal) {
adapter.visitVarInsn(ILOAD, i);
//adapter.loadLocal(i);
adapter.loadLocal(step);
adapter.visitInsn(IADD);
//adapter.dup();
adapter.visitVarInsn(ISTORE, i);
}
else adapter.visitIincInsn(i, step);
ExpressionUtil.visitLine(bc, startline);
adapter.visitLabel(l2);
}
public void visitEndAfterCondition(BytecodeContext bc) {
GeneratorAdapter adapter = bc.getAdapter();
adapter.ifZCmp(Opcodes.IFNE, l3);
adapter.visitLabel(lend);
adapter.visitLocalVariable("i", "I", null, l1, lend, i);
}
/**
*
* @see railo.transformer.bytecode.visitor.LoopVisitor#visitContinue(org.objectweb.asm.commons.GeneratorAdapter)
*/
public void visitContinue(BytecodeContext bc) {
bc.getAdapter().visitJumpInsn(Opcodes.GOTO, lbegin);
}
/**
*
* @see railo.transformer.bytecode.visitor.LoopVisitor#visitBreak(org.objectweb.asm.commons.GeneratorAdapter)
*/
public void visitBreak(BytecodeContext bc) {
bc.getAdapter().visitJumpInsn(Opcodes.GOTO, lend);
}
/**
*
* @see railo.transformer.bytecode.visitor.LoopVisitor#getContinueLabel()
*/
public Label getContinueLabel() {
return lbegin;
}
/**
*
* @see railo.transformer.bytecode.visitor.LoopVisitor#getBreakLabel()
*/
public Label getBreakLabel() {
return lend;
}
}