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Clean up cast syntax and rules

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nub31
2025-10-23 21:39:24 +02:00
parent a7c45784b9
commit 9f91e42d63
6 changed files with 142 additions and 145 deletions
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72
compiler/NubLang/Generation/Generator.cs
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@@ -339,19 +339,15 @@ public class Generator
BoolLiteralNode boolLiteralNode => boolLiteralNode.Value ? "true" : "false",
ConstArrayIndexAccessNode constArrayIndexAccessNode => EmitConstArrayIndexAccess(constArrayIndexAccessNode),
ConstArrayInitializerNode constArrayInitializerNode => EmitConstArrayInitializer(constArrayInitializerNode),
ConstArrayToSliceNode constArrayToSliceNode => EmitConstArrayToSlice(constArrayToSliceNode),
ConvertCStringToStringNode convertCStringToStringNode => EmitConvertCStringToString(convertCStringToStringNode),
ConvertFloatNode convertFloatNode => EmitConvertFloat(convertFloatNode),
ConvertIntNode convertIntNode => EmitConvertInt(convertIntNode),
CStringLiteralNode cStringLiteralNode => $"\"{cStringLiteralNode.Value}\"",
DereferenceNode dereferenceNode => EmitDereference(dereferenceNode),
Float32LiteralNode float32LiteralNode => EmitFloat32Literal(float32LiteralNode),
Float64LiteralNode float64LiteralNode => EmitFloat64Literal(float64LiteralNode),
FloatToIntBuiltinNode floatToIntBuiltinNode => EmitFloatToIntBuiltin(floatToIntBuiltinNode),
CastNode castNode => EmitCast(castNode),
FuncCallNode funcCallNode => EmitFuncCall(funcCallNode),
FuncIdentifierNode funcIdentifierNode => FuncName(funcIdentifierNode.Module, funcIdentifierNode.Name, funcIdentifierNode.ExternSymbol),
AddressOfNode addressOfNode => EmitAddressOf(addressOfNode),
SizeBuiltinNode sizeBuiltinNode => $"sizeof({CType.Create(sizeBuiltinNode.TargetType)})",
SizeNode sizeBuiltinNode => $"sizeof({CType.Create(sizeBuiltinNode.TargetType)})",
SliceIndexAccessNode sliceIndexAccessNode => EmitSliceArrayIndexAccess(sliceIndexAccessNode),
StringLiteralNode stringLiteralNode => EmitStringLiteral(stringLiteralNode),
StructFieldAccessNode structFieldAccessNode => EmitStructFieldAccess(structFieldAccessNode),
@@ -442,46 +438,6 @@ public class Generator
return $"({CType.Create(arrayType.ElementType)}[{arrayType.Size}]){{{string.Join(", ", values)}}}";
}
private string EmitConstArrayToSlice(ConstArrayToSliceNode constArrayToSliceNode)
{
var arrayType = (NubConstArrayType)constArrayToSliceNode.Array.Type;
var array = EmitExpression(constArrayToSliceNode.Array);
return $"(slice){{.length = {arrayType.Size}, .data = (void*){array}}}";
}
private string EmitConvertCStringToString(ConvertCStringToStringNode convertCStringToStringNode)
{
var value = EmitExpression(convertCStringToStringNode.Value);
return $"(string){{.length = strlen({value}), .data = {value}}}";
}
private string EmitConvertFloat(ConvertFloatNode convertFloatNode)
{
var value = EmitExpression(convertFloatNode.Value);
var targetCast = convertFloatNode.TargetWidth switch
{
32 => "f32",
64 => "f64",
_ => throw new ArgumentOutOfRangeException()
};
return $"({targetCast}){value}";
}
private string EmitConvertInt(ConvertIntNode convertIntNode)
{
var value = EmitExpression(convertIntNode.Value);
var targetType = convertIntNode.TargetWidth switch
{
8 => convertIntNode.TargetSignedness ? "int8_t" : "uint8_t",
16 => convertIntNode.TargetSignedness ? "int16_t" : "uint16_t",
32 => convertIntNode.TargetSignedness ? "int32_t" : "uint32_t",
64 => convertIntNode.TargetSignedness ? "int64_t" : "uint64_t",
_ => throw new ArgumentOutOfRangeException()
};
return $"({targetType}){value}";
}
private string EmitDereference(DereferenceNode dereferenceNode)
{
var pointer = EmitExpression(dereferenceNode.Target);
@@ -510,18 +466,22 @@ public class Generator
return str;
}
private string EmitFloatToIntBuiltin(FloatToIntBuiltinNode floatToIntBuiltinNode)
private string EmitCast(CastNode castNode)
{
var value = EmitExpression(floatToIntBuiltinNode.Value);
var targetType = floatToIntBuiltinNode.TargetType.Width switch
var value = EmitExpression(castNode.Value);
if (castNode is { Type: NubSliceType, Value.Type: NubConstArrayType arrayType })
{
8 => floatToIntBuiltinNode.TargetType.Signed ? "int8_t" : "uint8_t",
16 => floatToIntBuiltinNode.TargetType.Signed ? "int16_t" : "uint16_t",
32 => floatToIntBuiltinNode.TargetType.Signed ? "int32_t" : "uint32_t",
64 => floatToIntBuiltinNode.TargetType.Signed ? "int64_t" : "uint64_t",
_ => throw new ArgumentOutOfRangeException()
};
return $"({targetType}){value}";
return $"(slice){{.length = {arrayType.Size}, .data = (void*){value}}}";
}
// todo(nub31): Stop depending on libc
if (castNode is { Type: NubCStringType, Value.Type: NubStringType })
{
return $"(string){{.length = strlen({value}), .data = {value}}}";
}
return $"({CType.Create(castNode.Type)}){value}";
}
private string EmitFuncCall(FuncCallNode funcCallNode)