protected override void EmitAssignToPtr(IBlockContext context, IBlockVariable tempSource)
{
foreach (var kv in targetType.fields)
{
IFieldAccessFactory sourceFieldFactory = sourceType.FindField(context.ModuleContext, kv.Key);
if (sourceFieldFactory == null)
{
continue;
}
IFieldAccessEmitter sourceField = sourceFieldFactory.Create(context.ModuleContext);
context.IL.Emit(OpCodes.Dup);
if (sourceField.RequiresPtr)
{
tempSource.EmitLoadPtr(context);
}
else
{
tempSource.EmitLoad(context);
}
sourceField.EmitLoad(context);
targetType.ItemTypes[kv.Key].AssignFrom(context.ModuleContext, sourceType.ItemTypes[kv.Key])
.EmitConvert(context);
context.IL.Emit(OpCodes.Stfld, kv.Value);
}
context.IL.Emit(OpCodes.Pop);
}
// ---------------- IAssignEmitter -----------------
public void EmitAssign(IBlockContext context, IBlockVariable variable, Expression expression, bool dropResult)
{
using ITempBlockVariable valueTemp = context.MakeTempVariable(sourceType);
expression.EmitStore(context, valueTemp, true);
variable.EmitLoadPtr(context);
EmitAssignToPtr(context, valueTemp);
if (!dropResult)
{
variable.EmitLoad(context);
}
}
public override void EmitStore(IBlockContext context, IBlockVariable variable, bool dropResult)
{
if (!BuiltinType.Int.IsAssignableFrom(context.ModuleContext, from.ResultType(context)))
{
context.AddError(new StructuralError(
StructuralError.ErrorType.IncompatibleTypes,
"Range can only be created from int values",
from.Start,
from.End
));
}
if (!BuiltinType.Int.IsAssignableFrom(context.ModuleContext, to.ResultType(context)))
{
context.AddError(new StructuralError(
StructuralError.ErrorType.IncompatibleTypes,
"Range can only be created from int values",
to.Start,
to.End
));
}
if (context.HasErrors)
{
return;
}
variable.EmitLoadPtr(context);
context.IL.Emit(OpCodes.Dup);
from.EmitCode(context, false);
context.IL.Emit(OpCodes.Stfld, typeof(Range).GetField("from"));
to.EmitCode(context, false);
if (inclusive)
{
context.IL.Emit(OpCodes.Ldc_I4_1);
context.IL.Emit(OpCodes.Conv_I8);
context.IL.Emit(OpCodes.Add);
}
context.IL.Emit(OpCodes.Stfld, typeof(Range).GetField("to"));
if (!dropResult)
{
variable.EmitLoad(context);
}
}
public void EmitConstructor(IBlockContext context)
{
foreach (StructField field in fields.Where(e => e.IsRight).Select(e => e.Right))
{
TO2Type initializerType = field.initializer.ResultType(context);
if (!field.type.IsAssignableFrom(context.ModuleContext, initializerType))
{
context.AddError(new StructuralError(
StructuralError.ErrorType.IncompatibleTypes,
$"Expected item {field.name} of {name} to be a {field.type}, found {initializerType}",
Start,
End
));
}
}
if (context.HasErrors)
{
return;
}
Type type = typeDelegate.GeneratedType(context.ModuleContext);
IBlockVariable variable =
context.DeclaredVariable("instance", false, typeDelegate.UnderlyingType(context.ModuleContext));
variable.EmitLoad(context);
foreach (StructField field in fields.Where(e => e.IsRight).Select(e => e.Right))
{
context.IL.Emit(OpCodes.Dup);
field.initializer.EmitCode(context, false);
field.type.AssignFrom(context.ModuleContext, field.initializer.ResultType(context))
.EmitConvert(context);
context.IL.Emit(OpCodes.Stfld, type.GetField(field.name));
}
context.IL.EmitReturn(type);
typeDelegate.CreateStructType();
}
public void EmitAssign(IBlockContext context, IBlockVariable variable, Expression expression, bool dropResult)
{
Type generatedType = optionType.GeneratedType(context.ModuleContext);
using ITempBlockVariable valueTemp =
context.MakeTempVariable(optionType.elementType.UnderlyingType(context.ModuleContext));
optionType.elementType.AssignFrom(context.ModuleContext, otherType)
.EmitAssign(context, valueTemp, expression, true);
variable.EmitLoadPtr(context);
context.IL.Emit(OpCodes.Dup);
context.IL.Emit(OpCodes.Initobj, generatedType, 1, 0);
context.IL.Emit(OpCodes.Dup);
context.IL.Emit(OpCodes.Ldc_I4_1);
context.IL.Emit(OpCodes.Stfld, generatedType.GetField("defined"));
valueTemp.EmitLoad(context);
context.IL.Emit(OpCodes.Stfld, generatedType.GetField("value"));
if (!dropResult)
{
variable.EmitLoad(context);
}
}
public override void EmitStore(IBlockContext context, IBlockVariable variable, bool dropResult)
{
TupleType tupleType = variable.Type as TupleType;
if (tupleType == null)
{
context.AddError(new StructuralError(
StructuralError.ErrorType.InvalidType,
$"{variable.Type} is not a tuple",
Start,
End
));
return;
}
else
{
if (items.Count != tupleType.itemTypes.Count)
{
context.AddError(new StructuralError(
StructuralError.ErrorType.InvalidType,
$"Expected tuple of {tupleType.itemTypes.Count} items, found {items.Count} items",
Start,
End
));
}
for (int i = 0; i < items.Count; i++)
{
TO2Type valueType = items[i].ResultType(context);
if (!tupleType.itemTypes[i].IsAssignableFrom(context.ModuleContext, valueType))
{
context.AddError(new StructuralError(
StructuralError.ErrorType.InvalidType,
$"Expected item {i} of {tupleType} to be a {tupleType.itemTypes[i]}, found {valueType}",
Start,
End
));
}
}
}
if (context.HasErrors)
{
return;
}
foreach (Expression item in items)
{
item.Prepare(context);
}
Type type = tupleType.GeneratedType(context.ModuleContext);
variable.EmitLoadPtr(context);
// Note: Potentially overoptimized: Since all fields will be set, initialization should not be necessary
// context.IL.Emit(OpCodes.Dup);
// context.IL.Emit(OpCodes.Initobj, type, 1, 0);
for (int i = 0; i < items.Count; i++)
{
if (i > 0 && i % 7 == 0)
{
context.IL.Emit(OpCodes.Ldflda, type.GetField("Rest"));
type = type.GetGenericArguments()[7];
// context.IL.Emit(OpCodes.Dup);
// context.IL.Emit(OpCodes.Initobj, type, 1, 0);
}
if (i < items.Count - 1)
{
context.IL.Emit(OpCodes.Dup);
}
items[i].EmitCode(context, false);
tupleType.itemTypes[i].AssignFrom(context.ModuleContext, items[i].ResultType(context))
.EmitConvert(context);
context.IL.Emit(OpCodes.Stfld, type.GetField($"Item{i % 7 + 1}"));
}
if (context.HasErrors)
{
return;
}
if (!dropResult)
{
variable.EmitLoad(context);
}
}
public override void EmitCode(IBlockContext context, bool dropResult)
{
IBlockVariable blockVariable = context.FindVariable(name);
if (blockVariable == null)
{
context.AddError(new StructuralError(
StructuralError.ErrorType.NoSuchVariable,
$"No local variable '{name}'",
Start,
End
));
}
else if (blockVariable.IsConst)
{
context.AddError(new StructuralError(
StructuralError.ErrorType.NoSuchVariable,
$"Local variable '{name}' is read-only (const)",
Start,
End
));
}
if (context.HasErrors)
{
return;
}
TO2Type valueType = expression.ResultType(context);
if (context.HasErrors)
{
return;
}
if (op == Operator.Assign)
{
EmitAssign(context, blockVariable, valueType, dropResult);
return;
}
IOperatorEmitter operatorEmitter = blockVariable !.Type.AllowedSuffixOperators(context.ModuleContext)
.GetMatching(context.ModuleContext, op, valueType);
if (operatorEmitter == null)
{
context.AddError(new StructuralError(
StructuralError.ErrorType.IncompatibleTypes,
$"Cannot {op} a {blockVariable.Type} with a {valueType}",
Start,
End
));
return;
}
expression.Prepare(context);
blockVariable.EmitLoad(context);
expression.EmitCode(context, false);
if (context.HasErrors)
{
return;
}
operatorEmitter.OtherType.AssignFrom(context.ModuleContext, valueType).EmitConvert(context);
operatorEmitter.EmitAssign(context, blockVariable, this);
if (!dropResult)
{
blockVariable.EmitLoad(context);
}
}