internal static ShouldSerialize?InferDefaultShouldSerialize(
AttributedMembers attrMembers,
SerializerTypes types,
ITypeSymbol declaringType,
string propertyName,
ImmutableArray <AttributeSyntax> attrs,
Location?location,
ref ImmutableArray <Diagnostic> diags
)
{
var ignoredDiags = ImmutableArray <Diagnostic> .Empty;
var shouldSerializeType = Utils.GetTypeConstantWithName(attrMembers, attrs, "ShouldSerializeType", ref ignoredDiags);
var shouldSerializeMethod = Utils.GetConstantsWithName <string>(attrMembers, attrs, "ShouldSerializeMethodName", ref ignoredDiags);
// if anything _tried_ to set a non-default, don't include any defaults
if (!shouldSerializeType.IsEmpty || !shouldSerializeMethod.IsEmpty)
{
return(null);
}
foreach (var candidate in declaringType.GetMembers("ShouldSerialize" + propertyName))
{
var mtd = candidate as IMethodSymbol;
if (mtd == null)
{
continue;
}
if (!mtd.ReturnType.Equals(types.BuiltIn.Bool, SymbolEqualityComparer.Default))
{
continue;
}
bool isStatic, takesContext;
var ps = mtd.Parameters;
if (mtd.IsStatic)
{
isStatic = true;
if (ps.Length == 0)
{
takesContext = false;
}
else if (ps.Length == 1)
{
takesContext = ps[0].IsInWriteContext(types.OurTypes);
if (!takesContext && !ps[0].Type.Equals(declaringType, SymbolEqualityComparer.Default))
{
var diag = Diagnostics.BadShouldSerializeParameters_StaticOne(location, mtd, ps[0].Type);
diags = diags.Add(diag);
return(null);
}
}
else
{
continue;
}
}
else
{
isStatic = false;
takesContext = false;
if (ps.Length != 0)
{
continue;
}
}
return(new ShouldSerialize(mtd, isStatic, false, takesContext));
}
return(null);
}
private static ShouldSerialize?GetShouldSerialize(
Compilation compilation,
AttributedMembers attrMembers,
SerializerTypes types,
INamedTypeSymbol rowType,
Location?location,
ImmutableArray <AttributeSyntax> attrs,
ref ImmutableArray <Diagnostic> diags
)
{
var shouldSerialize =
Utils.GetMethodFromAttribute(
attrMembers,
"ShouldSerializeType",
Diagnostics.ShouldSerializeTypeSpecifiedMultipleTimes,
"ShouldSerializeMethodName",
Diagnostics.ShouldSerializeMethodNameSpecifiedMultipleTimes,
Diagnostics.ShouldSerializeBothMustBeSet,
location,
attrs,
ref diags
);
if (shouldSerialize == null)
{
return(null);
}
var(type, mtd) = shouldSerialize.Value;
var shouldSerializeMtd = Utils.GetMethod(type, mtd, location, ref diags);
if (shouldSerializeMtd == null)
{
return(null);
}
if (shouldSerializeMtd.IsGenericMethod)
{
var diag = Diagnostics.MethodCannotBeGeneric(location, shouldSerializeMtd);
diags = diags.Add(diag);
return(null);
}
var accessible = shouldSerializeMtd.IsAccessible(attrMembers);
if (!accessible)
{
var diag = Diagnostics.MethodNotPublicOrInternal(location, shouldSerializeMtd);
diags = diags.Add(diag);
return(null);
}
if (!shouldSerializeMtd.ReturnType.Equals(types.BuiltIn.Bool, SymbolEqualityComparer.Default))
{
var diag = Diagnostics.MethodMustReturnBool(location, shouldSerializeMtd);
diags = diags.Add(diag);
return(null);
}
var shouldSerializeParams = shouldSerializeMtd.Parameters;
var isStatic = shouldSerializeMtd.IsStatic;
bool takesContext;
bool takesRow;
if (isStatic)
{
// can legally take
// 1. no parameters
// 2. one parameter, a type which declares the annotated member
// 3. one parameter, in WriteContext
// 4. two parameters
// 1. the type which declares the annotated member, or one which can be assigned to it, and
// 2. in WriteContext
if (shouldSerializeParams.Length == 0)
{
// fine!
takesContext = false;
takesRow = false;
}
else if (shouldSerializeParams.Length == 1)
{
var p0 = shouldSerializeParams[0];
if (p0.IsInWriteContext(types.OurTypes))
{
takesRow = false;
takesContext = true;
}
else
{
if (!p0.IsNormalParameterOfType(compilation, rowType))
{
var diag = Diagnostics.BadShouldSerializeParameters_StaticOne(location, shouldSerializeMtd, rowType);
diags = diags.Add(diag);
return(null);
}
takesRow = true;
takesContext = false;
}
}
else if (shouldSerializeParams.Length == 2)
{
var p0 = shouldSerializeParams[0];
if (!p0.IsNormalParameterOfType(compilation, rowType))
{
var diag = Diagnostics.BadShouldSerializeParameters_StaticTwo(location, shouldSerializeMtd, rowType);
diags = diags.Add(diag);
return(null);
}
var p1 = shouldSerializeParams[1];
if (!p1.IsInWriteContext(types.OurTypes))
{
var diag = Diagnostics.BadShouldSerializeParameters_StaticTwo(location, shouldSerializeMtd, rowType);
diags = diags.Add(diag);
return(null);
}
takesRow = true;
takesContext = true;
}
else
{
var diag = Diagnostics.BadShouldSerializeParameters_TooMany(location, shouldSerializeMtd);
diags = diags.Add(diag);
return(null);
}
}
else
{
// can legally take
// 1. no parameters
// 2. one in WriteContext parameter
var onType = shouldSerializeMtd.ContainingType;
if (!onType.Equals(rowType, SymbolEqualityComparer.Default))
{
var diag = Diagnostics.ShouldSerializeInstanceOnWrongType(location, shouldSerializeMtd, rowType);
diags = diags.Add(diag);
return(null);
}
takesRow = true;
if (shouldSerializeParams.Length == 0)
{
takesContext = false;
}
else if (shouldSerializeParams.Length == 1)
{
var p0 = shouldSerializeParams[0];
if (!p0.IsInWriteContext(types.OurTypes))
{
var diag = Diagnostics.BadShouldSerializeParameters_InstanceOne(location, shouldSerializeMtd);
diags = diags.Add(diag);
return(null);
}
takesContext = true;
}
else
{
var diag = Diagnostics.BadShouldSerializeParameters_TooMany(location, shouldSerializeMtd);
diags = diags.Add(diag);
return(null);
}
}
return(new ShouldSerialize(shouldSerializeMtd, isStatic, takesRow, takesContext));
}
