public override T VisitAssign(BoundAssignEx x)
{
// Template: <x> = <x>
if (x.Target is BoundVariableRef lvar && lvar.Variable is LocalVariableReference lloc &&
x.Value is BoundVariableRef rvar && rvar.Variable is LocalVariableReference rloc &&
lloc.BoundName == rloc.BoundName && x.PhpSyntax != null)
{
// Assignment made to same variable
_diagnostics.Add(_routine, x.PhpSyntax, ErrorCode.WRN_AssigningSameVariable);
}
// Check the type of the value assigned to a field against its PHPDoc
var valMask = x.Value.TypeRefMask;
if (!valMask.IsAnyType && !valMask.IsRef &&
x.Target is BoundFieldRef fr && fr.BoundReference.Symbol is SourceFieldSymbol fieldSymbol &&
fieldSymbol.FindPhpDocVarTag() is PHPDocBlock.TypeVarDescTag fieldDoc &&
fieldDoc.TypeNamesArray.Length != 0)
{
var namingCtx = NameUtils.GetNamingContext(fieldSymbol.PhpDocBlock.ContainingType);
var fieldMask = PHPDoc.GetTypeMask(TypeCtx, fieldDoc.TypeNamesArray, namingCtx);
if (!TypeCtx.CanBeSameType(fieldMask, valMask))
{
// The value can't be of the type specified in PHPDoc
_diagnostics.Add(_routine, x.PhpSyntax, ErrorCode.WRN_FieldPhpDocAssignIncompatible,
TypeCtx.ToString(valMask), fieldSymbol, fieldDoc.TypeNames);
}
}
//
return(base.VisitAssign(x));
}
/// <summary>
/// Enqueues initializers of a class fields and constants.
/// </summary>
void EnqueueFieldsInitializer(SourceTypeSymbol type)
{
type.GetMembers().OfType <SourceFieldSymbol>().Foreach(f =>
{
if (f.Initializer != null)
{
EnqueueExpression(
f.Initializer,
TypeRefFactory.CreateTypeRefContext(type), //the context will be lost, analysis resolves constant values only and types are temporary
NameUtils.GetNamingContext(type.Syntax));
}
});
}
internal override TypeSymbol GetFieldType(ConsList <FieldSymbol> fieldsBeingBound)
{
// TODO: HHVM TypeHint
//
if ((IsConst || IsReadOnly) && Initializer != null)
{
// resolved type symbol if possible
if (Initializer.ResultType != null)
{
return(Initializer.ResultType);
}
// resolved value type if possible
var cvalue = Initializer.ConstantValue;
if (cvalue.HasValue)
{
var specialType = (cvalue.Value != null)
? cvalue.ToConstantValueOrNull()?.SpecialType
: SpecialType.System_Object; // NULL
if (specialType.HasValue && specialType != SpecialType.None)
{
return(DeclaringCompilation.GetSpecialType(specialType.Value));
}
}
//
//return DeclaringCompilation.GetTypeFromTypeRef(typectx, Initializer.TypeRefMask);
}
// PHPDoc @var type
var vartag = _phpDoc?.GetElement <PHPDocBlock.VarTag>();
if (vartag != null && vartag.TypeNamesArray.Length != 0)
{
var dummyctx = TypeRefFactory.CreateTypeRefContext(_containingType);
var tmask = PHPDoc.GetTypeMask(dummyctx, vartag.TypeNamesArray, NameUtils.GetNamingContext(_containingType.Syntax));
return(DeclaringCompilation.GetTypeFromTypeRef(dummyctx, tmask));
}
// default
return(DeclaringCompilation.CoreTypes.PhpValue);
}
internal override TypeSymbol GetFieldType(ConsList <FieldSymbol> fieldsBeingBound)
{
// TODO: PHP 7.4 typed properties // https://github.com/peachpiecompiler/peachpie/issues/766
//
if ((IsConst || IsReadOnly) && Initializer != null)
{
// resolved type symbol if possible
if (Initializer.ResultType != null)
{
return(Initializer.ResultType);
}
// resolved value type if possible
var cvalue = Initializer.ConstantValue;
if (cvalue.HasValue)
{
var specialType = (cvalue.Value != null)
? cvalue.ToConstantValueOrNull()?.SpecialType
: SpecialType.System_Object; // NULL
if (specialType.HasValue && specialType != SpecialType.None)
{
return(DeclaringCompilation.GetSpecialType(specialType.Value));
}
}
//
//return DeclaringCompilation.GetTypeFromTypeRef(typectx, Initializer.TypeRefMask);
}
// PHPDoc @var type
if ((DeclaringCompilation.Options.PhpDocTypes & PhpDocTypes.FieldTypes) != 0)
{
var vartag = FindPhpDocVarTag();
if (vartag != null && vartag.TypeNamesArray.Length != 0)
{
var dummyctx = TypeRefFactory.CreateTypeRefContext(_containingType);
var tmask = PHPDoc.GetTypeMask(dummyctx, vartag.TypeNamesArray, NameUtils.GetNamingContext(_containingType.Syntax));
return(DeclaringCompilation.GetTypeFromTypeRef(dummyctx, tmask));
}
}
// default
return(DeclaringCompilation.CoreTypes.PhpValue);
}
protected override TypeRefContext CreateTypeRefContext() => new TypeRefContext(NameUtils.GetNamingContext(_syntax.Namespace, _syntax.SourceUnit.Ast), _syntax.SourceUnit, null);