public override Expression VisitAssignment(AssignmentContext context)
{
var unaryExpression = Visit(context.unary_expression());
var expression = Visit(context.expression());
var op = context.assignment_operator().GetText();
if (op == "=")
{
return(Expression.Assign(unaryExpression, expression));
}
if (op == "+=")
{
return(Expression.AddAssign(unaryExpression, expression));
}
if (op == "-=")
{
return(Expression.SubtractAssign(unaryExpression, expression));
}
if (op == "*=")
{
return(Expression.MultiplyAssign(unaryExpression, expression));
}
if (op == "/=")
{
return(Expression.DivideAssign(unaryExpression, expression));
}
if (op == "%=")
{
return(Expression.ModuloAssign(unaryExpression, expression));
}
if (op == "&=")
{
return(Expression.AndAssign(unaryExpression, expression));
}
if (op == "|=")
{
return(Expression.OrAssign(unaryExpression, expression));
}
if (op == "^=")
{
return(Expression.ExclusiveOrAssign(unaryExpression, expression));
}
if (op == "<<=")
{
return(Expression.LeftShiftAssign(unaryExpression, expression));
}
if (op == ">>=")
{
return(Expression.RightShiftAssign(unaryExpression, expression));
}
throw new CompilationException($"Unsupported operation. Operation={op}", context);
}
public override SLValue VisitAssignment(AssignmentContext ctx)
{
SLValue newVal = this.Visit(ctx.expression());
if (ctx.indexes() != null)
{
SLValue val = _scope.resolve(ctx.Identifier().GetText());
List <ExpressionContext> exps = ctx.indexes().expression().ToList();
if (val == null)
{
throw new EvalException(ctx);
}
SetAtIndex(ctx, exps, val, newVal);
}
else
{
String id = ctx.Identifier().GetText();
_scope.GlobalAssign(id, newVal);
}
return(SLValue.VOID);
}