public override object VisitSimpleExpr([NotNull] SLangGrammarParser.SimpleExprContext context)
{
Visit(context.term());
if (context.simpleExpr() != null)
{
var op = context.AddOp() ?? context.SubOp() ?? context.BoolOr();
cppText.Write($" {op.GetText()} ");
Visit(context.simpleExpr());
}
return(null);
}
public override object VisitSimpleExpr([NotNull] SLangGrammarParser.SimpleExprContext context)
{
if (context.simpleExpr() != null)
{
var leftResultType = (Visit(context.term()) as ExpressionResult)?.Type;
var rightResultType = (Visit(context.simpleExpr()) as ExpressionResult)?.Type;
var opToken = context.AddOp() ?? context.SubOp() ?? context.BoolOr();
var allowedTypes = new[] { SlangSimpleType.Int, SlangSimpleType.Real };
if (context.BoolOr() == null && (leftResultType is SlangSimpleType lt && rightResultType is SlangSimpleType rt && lt.Equals(rt) && allowedTypes.Contains(lt)))
{
return(new ExpressionResult(leftResultType, ExpressionValueType.Value));
}
if (context.BoolOr() != null && (leftResultType is SlangSimpleType ltB && rightResultType is SlangSimpleType rtB && ltB.Equals(rtB) && ltB.Equals(SlangSimpleType.Boolean)))
{
return(new ExpressionResult(leftResultType, ExpressionValueType.Value));
}
ThrowInvalidTypesForBinaryOperationException(opToken.Symbol, file, leftResultType, rightResultType);
}
return(Visit(context.term()) as ExpressionResult);
}
/// <summary>
/// Exit a parse tree produced by <see cref="SLangGrammarParser.simpleExpr"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitSimpleExpr([NotNull] SLangGrammarParser.SimpleExprContext context)
{
}
/// <summary>
/// Visit a parse tree produced by <see cref="SLangGrammarParser.simpleExpr"/>.
/// <para>
/// The default implementation returns the result of calling <see cref="AbstractParseTreeVisitor{Result}.VisitChildren(IRuleNode)"/>
/// on <paramref name="context"/>.
/// </para>
/// </summary>
/// <param name="context">The parse tree.</param>
/// <return>The visitor result.</return>
public virtual Result VisitSimpleExpr([NotNull] SLangGrammarParser.SimpleExprContext context)
{
return(VisitChildren(context));
}
