public static void leadFlow(BytecodeContext bc, Statement stat, int flowType, String label)
throws BytecodeException {
List<FlowControlFinal> finallyLabels = new ArrayList<FlowControlFinal>();
FlowControl fc;
String name;
if (FlowControl.BREAK == flowType) {
fc = ASMUtil.getAncestorBreakFCStatement(stat, finallyLabels, label);
name = "break";
} else if (FlowControl.CONTINUE == flowType) {
fc = ASMUtil.getAncestorContinueFCStatement(stat, finallyLabels, label);
name = "continue";
} else {
fc = ASMUtil.getAncestorRetryFCStatement(stat, finallyLabels, label);
name = "retry";
}
if (fc == null)
throw new BytecodeException(
name + " must be inside a loop (for,while,do-while,<cfloop>,<cfwhile> ...)",
stat.getStart());
GeneratorAdapter adapter = bc.getAdapter();
Label end;
if (FlowControl.BREAK == flowType) end = ((FlowControlBreak) fc).getBreakLabel();
else if (FlowControl.CONTINUE == flowType) end = ((FlowControlContinue) fc).getContinueLabel();
else end = ((FlowControlRetry) fc).getRetryLabel();
// first jump to all final labels
FlowControlFinal[] arr = finallyLabels.toArray(new FlowControlFinal[finallyLabels.size()]);
if (arr.length > 0) {
FlowControlFinal fcf;
for (int i = 0; i < arr.length; i++) {
fcf = arr[i];
// first
if (i == 0) {
adapter.visitJumpInsn(Opcodes.GOTO, fcf.getFinalEntryLabel());
}
// last
if (arr.length == i + 1) fcf.setAfterFinalGOTOLabel(end);
else fcf.setAfterFinalGOTOLabel(arr[i + 1].getFinalEntryLabel());
}
} else bc.getAdapter().visitJumpInsn(Opcodes.GOTO, end);
}
/**
* @see
* lucee.transformer.bytecode.expression.ExpressionBase#_writeOut(org.objectweb.asm.commons.GeneratorAdapter,
* int)
*/
@Override
public Type _writeOut(BytecodeContext bc, int mode) throws TransformerException {
GeneratorAdapter adapter = bc.getAdapter();
if (mode == MODE_REF) {
_writeOut(bc, MODE_VALUE);
adapter.invokeStatic(Types.CASTER, Methods.METHOD_TO_BOOLEAN_FROM_BOOLEAN);
return Types.BOOLEAN;
}
Label l1 = new Label();
Label l2 = new Label();
expr.writeOut(bc, MODE_VALUE);
adapter.ifZCmp(Opcodes.IFEQ, l1);
adapter.visitInsn(Opcodes.ICONST_0);
adapter.visitJumpInsn(Opcodes.GOTO, l2);
adapter.visitLabel(l1);
adapter.visitInsn(Opcodes.ICONST_1);
adapter.visitLabel(l2);
return Types.BOOLEAN_VALUE;
}
/**
* @see
* lucee.transformer.bytecode.visitor.LoopVisitor#visitBreak(org.objectweb.asm.commons.GeneratorAdapter)
*/
@Override
public void visitBreak(BytecodeContext bc) {
bc.getAdapter().visitJumpInsn(Opcodes.GOTO, afterBody);
}
/**
* @see
* lucee.transformer.bytecode.visitor.LoopVisitor#visitContinue(org.objectweb.asm.commons.GeneratorAdapter)
*/
@Override
public void visitContinue(BytecodeContext bc) {
bc.getAdapter().visitJumpInsn(Opcodes.GOTO, beforeUpdate);
}
public void visitEndBody(BytecodeContext bc, Position line) {
bc.getAdapter().goTo(beforeUpdate);
ExpressionUtil.visitLine(bc, line);
bc.getAdapter().visitLabel(afterBody);
// adapter.visitLocalVariable("i", "I", null, beforeInit, afterBody, i);
}
public static void dummy2(BytecodeContext bc) {
bc.getAdapter().visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/System", "nanoTime", "()J");
bc.getAdapter().visitInsn(Opcodes.POP2);
}