internal override Node Bind(Binder b)
{
b.OpenScope();
b.Bind(ref Expr);
Expr.RequireGetAccess();
var s = b.FindOuter <SwitchStmt>() ?? throw Error(ErrorCode.Internal);
Cond = BinaryExpr.Bound(Expr, Expr.Token, IdExpr.Bound(s.SwitchValue), BinaryOperatorKind.ExactEqual, b.Options.Binding);
b.Convert(ref Cond, Compilation.Get(NativeType.Boolean));
if (When != null)
{
b.Bind(ref When);
When.RequireGetAccess();
b.Convert(ref When, Compilation.Get(NativeType.Boolean));
}
if (Stmt != null)
{
b.Bind(ref Stmt);
}
b.CloseScope();
return(null);
}
internal override Node Bind(Binder b)
{
b.OpenScope();
if (AssignExpr != null)
{
b.Bind(ref AssignExpr);
IterInit = AssignExpr;
}
else
{
b.Bind(ref ForDecl);
IterDecl = ForDecl;
AssignExpr = ForDecl.Initializer as AssignExpr;
}
Expr Iter;
Iter = AssignExpr.Left;
Iter.RequireGetAccess();
b.Bind(ref Final);
Final.RequireGetAccess();
if (Step != null)
{
b.Bind(ref Step);
Step.RequireGetAccess();
}
else
{
Step = LiteralExpr.Bound(Constant.Create(1));
}
switch (Dir.Type)
{
case TokenType.UPTO:
WhileExpr = BinaryExpr.Bound(Iter, Dir, Final, BinaryOperatorKind.LessThanOrEqual, b.Options.Binding);
IncrExpr = AssignOpExpr.Bound(Iter, Step, BinaryOperatorKind.Addition, b);
break;
case TokenType.DOWNTO:
WhileExpr = BinaryExpr.Bound(Iter, Dir, Final, BinaryOperatorKind.GreaterThanOrEqual, b.Options.Binding);
IncrExpr = AssignOpExpr.Bound(Iter, Step, BinaryOperatorKind.Subtraction, b);
break;
case TokenType.TO:
var step_pos = BinaryExpr.Bound(Step, Dir, LiteralExpr.Bound(Constant.Create(0)), BinaryOperatorKind.GreaterThanOrEqual, b.Options.Binding);
var whileExprUpTo = BinaryExpr.Bound(Iter, Dir, Final, BinaryOperatorKind.LessThanOrEqual, b.Options.Binding);
var whileExprDownTo = BinaryExpr.Bound(Iter, Dir, Final, BinaryOperatorKind.GreaterThanOrEqual, b.Options.Binding);
WhileExpr = IifExpr.Bound(step_pos, whileExprUpTo, whileExprDownTo, b.Options.Binding);
IncrExpr = AssignOpExpr.Bound(Iter, Step, BinaryOperatorKind.Addition, b);
break;
default:
throw Error(ErrorCode.Internal);
}
b.Convert(ref WhileExpr, Compilation.Get(NativeType.Boolean));
b.Bind(ref Stmt);
b.CloseScope();
return(null);
}
