public Expression transform(UnaryMinusExpression exp, CompilerTransformer compiler) {
final BytecodeExpr inner = (BytecodeExpr) compiler.transform(exp.getExpression());
final ClassNode type = ClassHelper.getUnwrapper(inner.getType());
if (type == ClassHelper.byte_TYPE
|| type == ClassHelper.short_TYPE
|| type == ClassHelper.int_TYPE
|| type == ClassHelper.long_TYPE
|| type == ClassHelper.float_TYPE
|| type == ClassHelper.double_TYPE) {
return new BytecodeExpr(exp, type) {
protected void compile(MethodVisitor mv) {
inner.visit(mv);
if (!ClassHelper.isPrimitiveType(inner.getType())) unbox(type, mv);
if (type == ClassHelper.int_TYPE
|| type == ClassHelper.short_TYPE
|| type == ClassHelper.byte_TYPE) mv.visitInsn(INEG);
else if (type == ClassHelper.long_TYPE) mv.visitInsn(LNEG);
else if (type == ClassHelper.float_TYPE) mv.visitInsn(FNEG);
else if (type == ClassHelper.double_TYPE) mv.visitInsn(DNEG);
}
};
} else {
MethodCallExpression negate =
new MethodCallExpression(inner, "negate", new ArgumentListExpression());
negate.setSourcePosition(exp);
return compiler.transform(negate);
}
}
@Override
public void visitUnaryMinusExpression(UnaryMinusExpression expression) {
// LOG.debug "Transforming expression '${expression}':"
if (expression.getLineNumber() >= 0 && expression.getLineNumber() < lineNumbers.length) {
// LOG.debug " start from ${expression.lineNumber} to ${lineNumbers[expression.lineNumber
// - 1]}"
expression.setLineNumber(lineNumbers[expression.getLineNumber() - 1]);
}
if (expression.getLastLineNumber() > 0
&& expression.getLastLineNumber() < lineNumbers.length) {
// LOG.debug " end from ${expression.lastLineNumber} to
// ${lineNumbers[expression.lastLineNumber - 1]}"
expression.setLastLineNumber(lineNumbers[expression.getLastLineNumber() - 1]);
}
super.visitUnaryMinusExpression(expression);
}
public void visitUnaryMinusExpression(UnaryMinusExpression expression) {
expression.getExpression().visit(this);
}