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);
}
}
public Expression transform(ExpressionList exp, CompilerTransformer compiler) {
final ArrayList<BytecodeExpr> list = new ArrayList<BytecodeExpr>(exp.expressions.size());
for (Expression e : exp.expressions) {
list.add((BytecodeExpr) compiler.transform(e));
}
return new BytecodeExpr(exp, exp.getType()) {
protected void compile(MethodVisitor mv) {
for (BytecodeExpr b : list) {
b.visit(mv);
}
}
};
}
public static Expression transformExpression(final Expression exp, CompilerTransformer compiler) {
if (exp instanceof BytecodeExpression) {
if (exp instanceof BytecodeExpr) return exp;
return new BytecodeExpr(exp, exp.getType()) {
protected void compile(MethodVisitor mv) {
((BytecodeExpression) exp).visit(mv);
}
};
}
ExprTransformer t = transformers.get(exp.getClass());
if (t == null) return compiler.transformImpl(exp);
return t.transform(exp, compiler);
}
public BytecodeExpr transformLogical(
T exp, CompilerTransformer compiler, final Label label, final boolean onTrue) {
final BytecodeExpr be;
be = (BytecodeExpr) transform(exp, compiler);
final ClassNode type = be.getType();
if (type == ClassHelper.VOID_TYPE) {
return be;
}
if (ClassHelper.isPrimitiveType(type)) {
return new BytecodeExpr(exp, ClassHelper.VOID_TYPE) {
protected void compile(MethodVisitor mv) {
be.visit(mv);
if (type == ClassHelper.byte_TYPE
|| type == ClassHelper.short_TYPE
|| type == ClassHelper.char_TYPE
|| type == ClassHelper.boolean_TYPE
|| type == ClassHelper.int_TYPE) {
} else if (type == ClassHelper.long_TYPE) {
mv.visitInsn(L2I);
} else if (type == ClassHelper.float_TYPE) {
mv.visitInsn(F2I);
} else if (type == ClassHelper.double_TYPE) {
mv.visitInsn(D2I);
}
mv.visitJumpInsn(onTrue ? IFNE : IFEQ, label);
}
};
} else {
MethodCallExpression safeCall =
new MethodCallExpression(
new BytecodeExpr(exp, be.getType()) {
protected void compile(MethodVisitor mv) {}
},
"asBoolean",
ArgumentListExpression.EMPTY_ARGUMENTS);
safeCall.setSourcePosition(exp);
final ResolvedMethodBytecodeExpr call =
(ResolvedMethodBytecodeExpr) compiler.transform(safeCall);
if (!call.getType().equals(ClassHelper.boolean_TYPE))
compiler.addError("asBoolean should return 'boolean'", exp);
if (call.getMethodNode().getDeclaringClass().equals(ClassHelper.OBJECT_TYPE)) {
// fast path
return new BytecodeExpr(exp, ClassHelper.VOID_TYPE) {
protected void compile(MethodVisitor mv) {
be.visit(mv);
mv.visitJumpInsn(onTrue ? IFNONNULL : IFNULL, label);
}
};
} else {
return new BytecodeExpr(exp, ClassHelper.VOID_TYPE) {
protected void compile(MethodVisitor mv) {
be.visit(mv);
mv.visitInsn(DUP);
Label nullLabel = new Label(), endLabel = new Label();
mv.visitJumpInsn(IFNULL, nullLabel);
call.visit(mv);
if (onTrue) {
mv.visitJumpInsn(IFEQ, endLabel);
mv.visitJumpInsn(GOTO, label);
mv.visitLabel(nullLabel);
mv.visitInsn(POP);
} else {
mv.visitJumpInsn(IFNE, endLabel);
mv.visitJumpInsn(GOTO, label);
mv.visitLabel(nullLabel);
mv.visitInsn(POP);
mv.visitJumpInsn(GOTO, label);
}
mv.visitLabel(endLabel);
}
};
}
}
}
