internal static void fall_true(EmitContext ec, AST ast, Label lbl)
{
Type type = ast.GetType();
if (type == typeof(Expression))
{
Expression exp = ast as Expression;
AST last_exp = (AST)exp.exprs [exp.exprs.Count - 1];
if (exp.exprs.Count >= 2)
{
exp.Emit(ec);
}
fall_true(ec, last_exp, lbl);
}
else if (type == typeof(Binary))
{
ft_binary_recursion(ec, ast, lbl);
}
else if (type == typeof(Equality) || type == typeof(StrictEquality))
{
ft_emit_equality(ec, ast, lbl);
}
else if (type == typeof(Relational))
{
ft_emit_relational(ec, (Relational)ast, lbl);
}
else
{
emit_default_case(ec, ast, OpCodes.Brfalse, lbl);
}
}
internal static Type IsLiteral(AST ast)
{
if (ast != null)
{
Type type = ast.GetType();
// FIXME: Add test for other literals (exclude StringLiteral)
if (type == typeof(ArrayLiteral))
{
return(type);
}
}
return(null);
}
internal static void fall_false(EmitContext ec, AST ast, Label lbl)
{
Type type = ast.GetType();
if (type == typeof(Expression))
{
Expression exp = ast as Expression;
if (exp.Size > 1)
{
exp.Emit(ec);
}
AST last_exp = (AST)exp.exprs [exp.exprs.Count - 1];
if (last_exp is Relational)
{
ff_emit_relational(ec, last_exp, lbl);
}
else if (last_exp is Binary)
{
ff_binary_recursion(ec, last_exp, lbl);
}
else if (last_exp is Identifier || last_exp is BooleanConstant)
{
emit_default_case(ec, last_exp, OpCodes.Brtrue, lbl);
}
else if (last_exp is Equality)
{
ff_emit_equality_cond(ec, last_exp, lbl);
}
else
{
Console.WriteLine("WARNING: fall_false, last_exp.GetType () == {0}, {1}", last_exp, ast.Location.LineNumber);
}
}
else if (type == typeof(Binary))
{
ff_binary_recursion(ec, ast, lbl);
}
else if (type == typeof(Relational))
{
ff_emit_relational(ec, ast, lbl);
}
else
{
emit_default_case(ec, ast, OpCodes.Brtrue, lbl);
}
}
bool IsLoop (AST ast)
{
Type t = ast.GetType ();
return t == typeof (For) || t == typeof (While) || t == typeof (DoWhile) || t == typeof (ForIn);
}
internal static Type IsLiteral (AST ast)
{
if (ast != null) {
Type type = ast.GetType ();
// FIXME: Add test for other literals (exclude StringLiteral)
if (type == typeof (ArrayLiteral))
return type;
}
return null;
}
internal static void fall_true(EmitContext ec, AST ast, Label lbl)
{
Type type = ast.GetType ();
if (type == typeof (Expression)) {
Expression exp = ast as Expression;
AST last_exp = (AST) exp.exprs [exp.exprs.Count - 1];
if (exp.exprs.Count >= 2)
exp.Emit (ec);
fall_true (ec, last_exp, lbl);
} else if (type == typeof (Binary))
ft_binary_recursion (ec, ast, lbl);
else if (type == typeof (Equality) || type == typeof (StrictEquality))
ft_emit_equality (ec, ast, lbl);
else if (type == typeof (Relational))
ft_emit_relational (ec, (Relational) ast, lbl);
else
emit_default_case (ec, ast, OpCodes.Brfalse, lbl);
}
internal static void fall_false(EmitContext ec, AST ast, Label lbl)
{
Type type = ast.GetType ();
if (type == typeof (Expression)) {
Expression exp = ast as Expression;
if (exp.Size > 1)
exp.Emit (ec);
AST last_exp = (AST) exp.exprs [exp.exprs.Count - 1];
if (last_exp is Relational)
ff_emit_relational (ec, last_exp, lbl);
else if (last_exp is Binary)
ff_binary_recursion (ec, last_exp, lbl);
else if (last_exp is Identifier || last_exp is BooleanConstant)
emit_default_case (ec, last_exp, OpCodes.Brtrue, lbl);
else if (last_exp is Equality)
ff_emit_equality_cond (ec, last_exp, lbl);
else {
Console.WriteLine ("WARNING: fall_false, last_exp.GetType () == {0}, {1}", last_exp, ast.Location.LineNumber);
}
} else if (type == typeof (Binary))
ff_binary_recursion (ec, ast, lbl);
else if (type == typeof (Relational))
ff_emit_relational (ec, ast, lbl);
else
emit_default_case (ec, ast, OpCodes.Brtrue, lbl);
}
bool IsLoop(AST ast)
{
Type t = ast.GetType();
return(t == typeof(For) || t == typeof(While) || t == typeof(DoWhile) || t == typeof(ForIn));
}