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Quick.YAML.Serializer.pas
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{ ***************************************************************************
Copyright (c) 2015-2020 Kike Pérez
Unit : Quick.YAML.Serializer
Description : YAML Serializer
Author : Kike Pérez
Version : 1.0
Created : 12/04/2019
Modified : 07/04/20120
This file is part of QuickLib: https://github.com/exilon/QuickLib
***************************************************************************
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*************************************************************************** }
unit Quick.YAML.Serializer;
{$i QuickLib.inc}
interface
uses
Classes,
SysUtils,
Rtti,
TypInfo,
{$IFDEF FPC}
rttiutils,
strUtils,
Generics.Collections,
{$ELSE}
{$IFDEF DELPHIRX103_UP}
System.Generics.Collections,
{$ENDIF}
{$ENDIF}
DateUtils,
Quick.Commons,
Quick.RTTI.Utils,
Quick.YAML,
Quick.Value,
Quick.Arrays;
type
EYamlSerializeError = class(Exception);
EYamlDeserializeError = class(Exception);
{$IFNDEF FPC}
TNotSerializableProperty = class(TCustomAttribute);
TCommentProperty = class(TCustomAttribute)
private
fComment : string;
public
constructor Create(const aComment: string);
property Comment : string read fComment;
end;
TCustomNameProperty = class(TCustomAttribute)
private
fName : string;
public
constructor Create(const aName: string);
property Name : string read fName;
end;
{$ENDIF}
IYamlSerializer = interface
['{CA26F7AE-F1FE-41BE-9C23-723A687F60D1}']
function YamlToObject(aType: TClass; const aYaml: string): TObject; overload;
function YamlToObject(aObject: TObject; const aYaml: string): TObject; overload;
function ObjectToYaml(aObject : TObject): string;
end;
TSerializeLevel = (slPublicProperty, slPublishedProperty);
TRTTIYaml = class
private
fSerializeLevel : TSerializeLevel;
fUseEnumNames : Boolean;
fUseYamlCaseSense : Boolean;
function GetValue(aAddr: Pointer; aType: TRTTIType): TValue; overload;
function GetValue(aAddr: Pointer; aTypeInfo: PTypeInfo): TValue; overload;
function IsAllowedProperty(aObject : TObject; const aPropertyName : string) : Boolean;
function IsGenericList(aObject : TObject) : Boolean;
function IsGenericXArray(const aClassName : string) : Boolean;
function GetPropertyValue(Instance : TObject; const PropertyName : string) : TValue;
function GetPropertyValueFromObject(Instance : TObject; const PropertyName : string) : TValue;
{$IFNDEF FPC}
function GetFieldValueFromRecord(aValue : TValue; const FieldName : string) : TValue;
{$ENDIF}
procedure SetPropertyValue(Instance : TObject; aPropInfo : PPropInfo; aValue : TValue); overload;
procedure SetPropertyValue(Instance : TObject; const PropertyName : string; aValue : TValue); overload;
{$IFDEF FPC}
function FloatProperty(aObject : TObject; aPropInfo: PPropInfo): string;
function GetPropType(aPropInfo: PPropInfo): PTypeInfo;
procedure LoadSetProperty(aInstance : TObject; aPropInfo: PPropInfo; const aValue: string);
{$ENDIF}
public
constructor Create(aSerializeLevel : TSerializeLevel; aUseEnumNames : Boolean = True);
property UseEnumNames : Boolean read fUseEnumNames write fUseEnumNames;
property UseYamlCaseSense : Boolean read fUseYamlCaseSense write fUseYamlCaseSense;
{$IFNDEF FPC}
function DeserializeDynArray(aTypeInfo : PTypeInfo; aObject : TObject; const aYamlArray: TYamlArray) : TValue;
function DeserializeRecord(aRecord : TValue; aObject : TObject; const aYaml : TYamlObject) : TValue;
{$ELSE}
procedure DeserializeDynArray(aTypeInfo: PTypeInfo; const aPropertyName : string; aObject: TObject; const aYamlArray: TYamlArray);
{$ENDIF}
function DeserializeClass(aType : TClass; const aYaml : TYamlObject) : TObject;
function DeserializeObject(aObject : TObject; const aYaml : TYamlObject) : TObject; overload;
{$IFNDEF FPC}
function DeserializeList(aObject: TObject; const aName : string; const aYaml: TYamlObject) : TObject;
procedure DeserializeXArray(Instance : TObject; aRecord : TValue; aProperty : TRttiProperty; const aPropertyName : string; aYaml : TYamlObject);
{$ENDIF}
function DeserializeProperty(aObject : TObject; const aName : string; aProperty : TRttiProperty; const aYaml : TYamlObject) : TObject; overload;
{$IFNDEF FPC}
function DeserializeType(aObject : TObject; aType : TTypeKind; aTypeInfo : PTypeInfo; const aValue: string) : TValue;
{$ELSE}
function DeserializeType(aObject : TObject; aType : TTypeKind; const aPropertyName, aValue: string) : TValue;
{$ENDIF}
{$IFNDEF FPC}
function Serialize(const aName : string; aValue : TValue) : TYamlPair; overload;
{$ELSE}
function Serialize(aObject : TObject; aType : TTypeKind; const aPropertyName : string) : TYamlPair;
function Serialize(const aName : string; aValue : TValue) : TYamlPair;
{$ENDIF}
function Serialize(aObject : TObject) : TYamlObject; overload;
function GetYamlPairByName(aYaml : TYamlObject; const aName : string) : TYamlPair;
end;
TYamlSerializer = class(TInterfacedObject,IYamlSerializer)
strict private
fSerializeLevel : TSerializeLevel;
fUseEnumNames : Boolean;
fUseYamlCaseSense : Boolean;
fRTTIYaml : TRTTIYaml;
private
procedure SetUseEnumNames(const Value: Boolean);
procedure SetUseYamlCaseSense(const Value: Boolean);
procedure SetSerializeLevel(const Value: TSerializeLevel);
public
constructor Create(aSerializeLevel: TSerializeLevel; aUseEnumNames : Boolean = True);
destructor Destroy; override;
property SerializeLevel : TSerializeLevel read fSerializeLevel write SetSerializeLevel;
property UseEnumNames : Boolean read fUseEnumNames write SetUseEnumNames;
property UseYamlCaseSense : Boolean read fUseYamlCaseSense write SetUseYamlCaseSense;
function YamlToObject(aType : TClass; const aYaml: string) : TObject; overload;
function YamlToObject(aObject : TObject; const aYaml: string) : TObject; overload;
function ObjectToYaml(aObject : TObject): string;
end;
PPByte = ^PByte;
resourcestring
cNotSupportedDataType = 'Not supported "%s" data type "%s"';
cNotSerializable = 'Object is not serializable';
implementation
{ TRTTIYaml }
{$IFNDEF FPC}
function TRTTIYaml.DeserializeDynArray(aTypeInfo: PTypeInfo; aObject: TObject; const aYamlArray: TYamlArray) : TValue;
var
rType: PTypeInfo;
len: NativeInt;
pArr: Pointer;
rItemValue: TValue;
i: Integer;
objClass: TClass;
ctx : TRttiContext;
Yaml : TYamlObject;
rDynArray : TRttiDynamicArrayType;
propObj : TObject;
begin
if GetTypeData(aTypeInfo).DynArrElType = nil then Exit;
if not assigned(aYamlArray) then Exit;
len := aYamlArray.Count;
rType := GetTypeData(aTypeInfo).DynArrElType^;
pArr := nil;
DynArraySetLength(pArr,aTypeInfo, 1, @len);
try
TValue.Make(@pArr,aTypeInfo, Result);
rDynArray := ctx.GetType(Result.TypeInfo) as TRTTIDynamicArrayType;
for i := 0 to aYamlArray.Count - 1 do
begin
rItemValue := nil;
case rType.Kind of
tkClass :
begin
if TYamlPair(aYamlArray.Items[i]).Value is TYamlObject then
begin
Yaml := TYamlObject(TYamlPair(aYamlArray.Items[i]).value);
propObj := GetValue(PPByte(Result.GetReferenceToRawData)^ +rDynArray.ElementType.TypeSize * i, rDynArray.ElementType).AsObject;
if propObj = nil then
begin
objClass := rType.TypeData.ClassType;
rItemValue := DeserializeClass(objClass,yaml);
end
else
begin
DeserializeObject(propObj,yaml);
end;
end;
end;
tkRecord :
begin
Yaml := TYamlObject(TYamlPair(aYamlArray.Items[i]).value);
rItemValue := DeserializeRecord(GetValue(PPByte(Result.GetReferenceToRawData)^ +rDynArray.ElementType.TypeSize * i,
rDynArray.ElementType),aObject,Yaml);
end;
tkMethod, tkPointer, tkClassRef ,tkInterface, tkProcedure :
begin
//skip these properties
end
else
begin
rItemValue := DeserializeType(aObject,rType.Kind,aTypeInfo,aYamlArray.Items[i].Value);
end;
end;
if not rItemValue.IsEmpty then Result.SetArrayElement(i,rItemValue);
end;
//aProperty.SetValue(aObject,rValue);
finally
DynArrayClear(pArr,aTypeInfo);
end;
end;
{$ELSE}
procedure TRTTIYaml.DeserializeDynArray(aTypeInfo: PTypeInfo; const aPropertyName : string; aObject: TObject; const aYamlArray: TYamlArray);
var
rType: PTypeInfo;
len: NativeInt;
pArr: Pointer;
rItemValue: TValue;
i: Integer;
objClass: TClass;
propObj : TObject;
rValue : TValue;
yaml : TYamlObject;
begin
if GetTypeData(aTypeInfo).ElType2 = nil then Exit;
len := aYamlArray.Count;
rType := GetTypeData(aTypeInfo).ElType2;
pArr := nil;
DynArraySetLength(pArr,aTypeInfo, 1, @len);
try
TValue.Make(@pArr,aTypeInfo, rValue);
for i := 0 to aYamlArray.Count - 1 do
begin
rItemValue := nil;
case rType.Kind of
tkClass :
begin
if TYamlPair(aYamlArray.Items[i]).Value is TYamlObject then
begin
Yaml := TYamlObject(TYamlPair(aYamlArray.Items[i]).value);
propObj := GetValue(PPByte(rValue.GetReferenceToRawData)^ +GetTypeData(aTypeInfo).elSize * i, GetTypeData(aTypeInfo).ElType2).AsObject;
if propObj = nil then
begin
//objClass := GetTypeData(aTypeInfo).ClassType;
objClass := GetTypeData(GetTypeData(aTypeInfo).ElType2).ClassType;
rItemValue := DeserializeClass(objClass,yaml);
end
else
begin
DeserializeObject(propObj,yaml);
end;
end;
end;
tkRecord :
begin
{Yaml := TYamlObject(aYamlArray.Items[i]);
rItemValue := DeserializeRecord(GetValue(PPByte(Result.GetReferenceToRawData)^ +rDynArray.ElementType.TypeSize * i,
rDynArray.ElementType),aObject,Yaml); }
end;
tkMethod, tkPointer, tkClassRef ,tkInterface, tkProcedure :
begin
//skip these properties
end
else
begin
rItemValue := DeserializeType(aObject,GetTypeData(aTypeInfo).ElType2.Kind,aPropertyName,aYamlArray.Items[i].Value);
end;
end;
if not rItemValue.IsEmpty then rValue.SetArrayElement(i,rItemValue);
end;
//aProperty.SetValue(aObject,rValue);
SetDynArrayProp(aObject,GetPropInfo(aObject,aPropertyName),pArr);
finally
DynArrayClear(pArr,aTypeInfo);
end;
end;
{$ENDIF}
{$IFNDEF FPC}
function TRTTIYaml.DeserializeRecord(aRecord : TValue; aObject : TObject; const aYaml : TYamlObject) : TValue;
var
ctx : TRttiContext;
rRec : TRttiRecordType;
rField : TRttiField;
rValue : TValue;
member : TYamlPair;
yArray : TYamlArray;
Yaml : TYamlObject;
objClass : TClass;
propobj : TObject;
begin
rRec := ctx.GetType(aRecord.TypeInfo).AsRecord;
try
for rField in rRec.GetFields do
begin
rValue := nil;
//member := TYamlPair(aYaml.GetValue(rField.Name));
member := GetYamlPairByName(aYaml,rField.Name);
if member <> nil then
case rField.FieldType.TypeKind of
tkDynArray :
begin
yArray := TYamlObject.ParseYamlValue(member.ToYaml) as TYamlArray;
try
rValue := DeserializeDynArray(rField.FieldType.Handle,aObject,yArray);
finally
yArray.Free;
end;
end;
tkClass :
begin
//if (member.YamlValue is TYamlObject) then
begin
propobj := rField.GetValue(@aRecord).AsObject;
Yaml := TYamlObject.ParseYamlValue(member.ToYaml) as TYamlObject;
try
if propobj = nil then
begin
objClass := rField.FieldType.Handle^.TypeData.ClassType;// aProperty.PropertyType.Handle^.TypeData.ClassType;
rValue := DeserializeClass(objClass,Yaml);
end
else
begin
DeserializeObject(propobj,Yaml);
end;
finally
Yaml.Free;
end;
end
end;
tkRecord :
begin
Yaml := TYamlObject.ParseYamlValue(member.ToYaml) as TYamlObject;
try
rValue := DeserializeRecord(rField.GetValue(aRecord.GetReferenceToRawData),aObject,Yaml);
finally
Yaml.Free;
end;
end
else
begin
//rValue := DeserializeType(aObject,rField.FieldType.TypeKind,rField.FieldType.Handle,member.ToYaml);
{$IFNDEF FPC}
//avoid return unicode escaped chars if string
if rField.FieldType.TypeKind in [tkString, tkLString, tkWString, tkUString] then
{$IFDEF DELPHIRX103_UP}
rValue := DeserializeType(aObject,rField.FieldType.TypeKind,rField.FieldType.Handle,member.Value.AsString)
{$ELSE}
rValue := DeserializeType(aObject,rField.FieldType.TypeKind,rField.FieldType.Handle,member.YamlString.ToString)
{$ENDIF}
else rValue := DeserializeType(aObject,rField.FieldType.TypeKind,rField.FieldType.Handle,member.Value.AsString);
{$ELSE}
rValue := DeserializeType(aObject,rField.FieldType.TypeKind,aName,member.Value.AsString);
{$ENDIF}
end;
end;
if not rValue.IsEmpty then rField.SetValue(aRecord.GetReferenceToRawData,rValue);
end;
Result := aRecord;
finally
ctx.Free;
end;
end;
{$ENDIF}
constructor TRTTIYaml.Create(aSerializeLevel : TSerializeLevel; aUseEnumNames : Boolean = True);
begin
fSerializeLevel := aSerializeLevel;
fUseEnumNames := aUseEnumNames;
fUseYamlCaseSense := False;
end;
function TRTTIYaml.DeserializeClass(aType: TClass; const aYaml: TYamlObject): TObject;
begin
Result := nil;
if (aYaml = nil) or ((aYaml as TYamlValue) is TYamlNull) or (aYaml.Count = 0) then Exit;
try
Result := aType.Create;
Result := DeserializeObject(Result,aYaml);
except
on E : Exception do
begin
Result.Free;
raise EYamlDeserializeError.CreateFmt('Deserialize error class "%s" : %s',[aType.ClassName,e.Message]);
end;
end;
end;
function TRTTIYaml.DeserializeObject(aObject: TObject; const aYaml: TYamlObject): TObject;
var
ctx: TRttiContext;
rType: TRttiType;
rProp: TRttiProperty;
{$IFNDEF FPC}
attr: TCustomAttribute;
{$ENDIF}
propertyname : string;
begin
Result := aObject;
if (aYaml = nil) or ((aYaml as TYamlValue) is TYamlNull) or (aYaml.Count = 0) or (Result = nil) then Exit;
try
rType := ctx.GetType(aObject.ClassInfo);
try
for rProp in rType.GetProperties do
begin
{$IFNDEF FPC}
if ((fSerializeLevel = slPublicProperty) and (rProp.PropertyType.IsPublicType))
or ((fSerializeLevel = slPublishedProperty) and ((IsPublishedProp(aObject,rProp.Name)) or (rProp.Name = 'List'))) then
{$ENDIF}
begin
if ((rProp.IsWritable) or (rProp.Name = 'List')) and (IsAllowedProperty(aObject,rProp.Name)) then
begin
propertyname := rProp.Name;
{$IFNDEF FPC}
for attr in rProp.GetAttributes do if attr is TCustomNameProperty then propertyname := TCustomNameProperty(attr).Name;
if rProp.Name = 'List' then
begin
Result := DeserializeList(Result,propertyname,aYaml);
end
else if (rProp.GetValue(aObject).IsObject) and (IsGenericList(rProp.GetValue(aObject).AsObject)) then
begin
DeserializeList(rProp.GetValue(aObject).AsObject,'List',TYamlObject(aYaml.GetValue(propertyname)));
end
else if (not rProp.GetValue(aObject).IsObject) and (IsGenericXArray(rProp.GetValue(aObject){$IFNDEF NEXTGEN}.TypeInfo.Name{$ELSE}.TypeInfo.NameFld.ToString{$ENDIF})) then
begin
DeserializeXArray(Result,rProp.GetValue(aObject),rProp,propertyname,aYaml);
end
else
{$ENDIF}
Result := DeserializeProperty(Result,propertyname,rProp,aYaml);
end;
end;
end;
finally
ctx.Free;
end;
except
on E : Exception do
begin
Result.Free;
raise EYamlDeserializeError.CreateFmt('Deserialize error for object "%s" : %s',[aObject.ClassName,e.Message]);
end;
end;
end;
{$IFNDEF FPC}
function TRTTIYaml.DeserializeList(aObject: TObject; const aName : string; const aYaml: TYamlObject) : TObject;
var
ctx : TRttiContext;
rType : TRttiType;
yArray : TYamlArray;
member : TYamlPair;
rvalue : TValue;
i : Integer;
rProp : TRttiProperty;
{$IFNDEF DELPHIRX103_UP}
rfield : TRttiField;
{$ENDIF}
begin
Result := aObject;
rType := ctx.GetType(aObject.ClassInfo);
try
rProp := rType.GetProperty('List');
if rProp = nil then Exit;
finally
ctx.Free;
end;
member := GetYamlPairByName(aYaml,aName);
//var a := aYaml.ToYaml;
if member = nil then yArray := TYamlArray(aYaml) //TYamlObject.ParseYamlValue(aYaml.ToYaml) as TYamlArray
else yArray := TYamlObject.ParseYamlValue(member.ToYaml) as TYamlArray;
rvalue := DeserializeDynArray(rProp.PropertyType.Handle,Result,yArray);
if not rValue.IsEmpty then
begin
{$IFDEF DELPHIRX103_UP}
if (TObjectList<TObject>(aObject) <> nil) and (rvalue.IsArray) then
begin
TObjectList<TObject>(aObject).Clear;
TObjectList<TObject>(aObject).Capacity := rvalue.GetArrayLength;
for i := 0 to rvalue.GetArrayLength - 1 do
begin
TObjectList<TObject>(aObject).Add(rvalue.GetArrayElement(i).AsObject);
end;
end;
{$ELSE}
for rfield in rType.GetFields do
begin
if rfield.Name = 'FOwnsObjects' then rfield.SetValue(aObject,True);
//if rfield.Name = 'FCount' then rfield.SetValue(aObject,i);
if rfield.Name = 'FItems' then
begin
//if TList(aObject) <> nil then TList(aObject).Clear;
//rfield.GetValue(aObject).AsObject.Free;// aValue.GetReferenceToRawData)
rfield.SetValue(aObject,rValue);// .SetDynArrayProp(aObject,'fItems',Result);
Break;
end;
end;
rProp := rType.GetProperty('Count');
rProp.SetValue(aObject,i);
{$ENDIF}
end;
end;
{$ENDIF}
{$IFNDEF FPC}
procedure TRTTIYaml.DeserializeXArray(Instance : TObject; aRecord : TValue; aProperty : TRttiProperty; const aPropertyName : string; aYaml : TYamlObject);
var
ctx : TRttiContext;
rRec : TRttiRecordType;
rfield : TRttiField;
rValue : TValue;
member : TYamlPair;
yArray : TYamlArray;
begin
rRec := ctx.GetType(aRecord.TypeInfo).AsRecord;
try
rfield := rRec.GetField('fArray');
if rfield <> nil then
begin
rValue := nil;
//member := TYamlPair(aYaml.GetValue(rField.Name));
member := GetYamlPairByName(aYaml,aPropertyName);
if (member <> nil) and (rField.FieldType.TypeKind = tkDynArray) then
begin
yArray := TYamlObject.ParseYamlValue(member.ToYaml) as TYamlArray;
try
rValue := DeserializeDynArray(rField.FieldType.Handle,nil,yArray);
finally
yArray.Free;
end;
end;
end;
if not rValue.IsEmpty then rField.SetValue(aRecord.GetReferenceToRawData,rValue);
aProperty.SetValue(Instance,aRecord);
finally
ctx.Free;
end;
end;
{$ENDIF}
function TRTTIYaml.DeserializeProperty(aObject : TObject; const aName : string; aProperty : TRttiProperty; const aYaml : TYamlObject) : TObject;
var
rValue : TValue;
member : TYamlPair;
objClass: TClass;
yArray : TYamlArray;
Yaml : TYamlObject;
begin
Result := aObject;
rValue := nil;
//member := TYamlPair(aYaml.GetValue(aName));
member := GetYamlPairByName(aYaml,aName);
if member <> nil then
begin
case aProperty.PropertyType.TypeKind of
tkDynArray :
begin
yArray := member.Value as TYamlArray;
{$IFNDEF FPC}
aProperty.SetValue(aObject,DeserializeDynArray(aProperty.PropertyType.Handle,Result,yArray));
{$ELSE}
DeserializeDynArray(aProperty.PropertyType.Handle,aName,Result,yArray);
{$ENDIF}
Exit;
end;
tkClass :
begin
//if (member.YamlValue is TYamlObject) then
begin
Yaml := TYamlObject(TYamlObject.ParseYamlValue(member.ToYaml));
try
if aProperty.GetValue(aObject).AsObject = nil then
begin
{$IFNDEF FPC}
objClass := aProperty.PropertyType.Handle^.TypeData.ClassType;
rValue := DeserializeClass(objClass,Yaml);
{$ELSE}
objClass := GetObjectPropClass(aObject,aName);
//objClass := GetTypeData(aProperty.PropertyType.Handle)^.ClassType;
rValue := DeserializeClass(objClass,Yaml);
SetObjectProp(aObject,aName,rValue.AsObject);
Exit;
{$ENDIF}
end
else
begin
rValue := DeserializeObject(aProperty.GetValue(aObject).AsObject,Yaml);
Exit;
end;
finally
Yaml.Free;
end;
end
end;
{$IFNDEF FPC}
tkRecord :
begin
Yaml := TYamlObject.ParseYamlValue(member.ToYaml) as TYamlObject;
try
rValue := DeserializeRecord(aProperty.GetValue(aObject),aObject,Yaml);
finally
Yaml.Free;
end;
end;
tkSet :
begin
rValue := DeserializeType(aObject,aProperty.PropertyType.TypeKind,aProperty.GetValue(aObject).TypeInfo,member.ToYaml)
end
{$ENDIF}
else
begin
{$IFNDEF FPC}
//avoid return unicode escaped chars if string
if aProperty.PropertyType.TypeKind in [tkString, tkLString, tkWString, tkUString] then
{$IFDEF DELPHIRX103_UP}
rValue := DeserializeType(aObject,aProperty.PropertyType.TypeKind,aProperty.GetValue(aObject).TypeInfo,member.Value.AsString)
{$ELSE}
rValue := DeserializeType(aObject,aProperty.PropertyType.TypeKind,aProperty.GetValue(aObject).TypeInfo,member.YamlString.ToString)
{$ENDIF}
else rValue := DeserializeType(aObject,aProperty.PropertyType.TypeKind,aProperty.GetValue(aObject).TypeInfo,member.Value.AsString);
{$ELSE}
rValue := DeserializeType(aObject,aProperty.PropertyType.TypeKind,aName,member.Value.AsString);
if not rValue.IsEmpty then SetPropertyValue(aObject,aName,rValue);
{$ENDIF}
end;
end;
{$IFNDEF FPC}
if not rValue.IsEmpty then aProperty.SetValue(Result,rValue);
{$ENDIF}
end;
end;
{$IFNDEF FPC}
function TRTTIYaml.DeserializeType(aObject : TObject; aType : TTypeKind; aTypeInfo : PTypeInfo; const aValue: string) : TValue;
var
i : Integer;
value : string;
fsettings : TFormatSettings;
begin
try
value := AnsiDequotedStr(aValue,'"');
case aType of
tkString, tkLString, tkWString, tkUString :
begin
Result := value;
end;
tkChar, tkWChar :
begin
Result := value;
end;
tkInteger :
begin
Result := StrToInt(value);
end;
tkInt64 :
begin
Result := StrToInt64(value);
end;
tkFloat :
begin
if aTypeInfo = TypeInfo(TDateTime) then
begin
if CompareText(value,'null') <> 0 then Result := JsonDateToDateTime(value);
end
else if aTypeInfo = TypeInfo(TDate) then
begin
if CompareText(value,'null') <> 0 then Result := StrToDate(value);
end
else if aTypeInfo = TypeInfo(TTime) then
begin
Result := StrToTime(value);
end
else
begin
fsettings := TFormatSettings.Create;
Result := StrToFloat(StringReplace(value,'.',fsettings.DecimalSeparator,[]));
end;
end;
tkEnumeration :
begin
if aTypeInfo = System.TypeInfo(Boolean) then
begin
Result := StrToBool(value);
end
else
begin
//if fUseEnumNames then TValue.Make(GetEnumValue(aTypeInfo,value),aTypeInfo, Result)
// else TValue.Make(StrToInt(value),aTypeInfo, Result);
if not TryStrToInt(value,i) then TValue.Make(GetEnumValue(aTypeInfo,value),aTypeInfo, Result)
else TValue.Make(StrToInt(value),aTypeInfo, Result);
end;
end;
tkSet :
begin
i := StringToSet(aTypeInfo,value);
TValue.Make(@i,aTypeInfo,Result);
end;
else
begin
//raise EclYamlSerializerError.Create('Not supported data type!');
end;
end;
except
on E : Exception do
begin
raise EYamlDeserializeError.CreateFmt('Deserialize error type "%s.%s" : %s',[aObject.ClassName,GetTypeName(aTypeInfo),e.Message]);
end;
end;
end;
{$ELSE}
function TRTTIYaml.DeserializeType(aObject : TObject; aType : TTypeKind; const aPropertyName, aValue: string) : TValue;
var
value : string;
propinfo : PPropInfo;
fsettings : TFormatSettings;
begin
try
value := AnsiDequotedStr(aValue,'"');
if value = '' then
begin
Result := nil;
Exit;
end;
propinfo := GetPropInfo(aObject,aPropertyName);
//case propinfo.PropType.Kind of
case aType of
tkString, tkLString, tkWString, tkUString, tkAString :
begin
Result := value;
//SetStrProp(aObject,propinfo,value);
end;
tkChar, tkWChar :
begin
Result := value;
end;
tkInteger :
begin
Result := StrToInt(value);
end;
tkInt64 :
begin
Result := StrToInt64(value);
end;
tkFloat :
begin
if propinfo.PropType = TypeInfo(TDateTime) then
begin
if CompareText(value,'null') <> 0 then Result := JsonDateToDateTime(value);
end
else if propinfo.PropType = TypeInfo(TDate) then
begin
if CompareText(value,'null') <> 0 then Result := StrToDate(value);
end
else if propinfo.PropType = TypeInfo(TTime) then
begin
Result := StrToTime(value);
end
else
begin
fsettings := DefaultFormatSettings;
Result := StrToFloat(StringReplace(value,'.',fsettings.DecimalSeparator,[]));
end;
end;
tkEnumeration:
begin
Result := value;
end;
tkBool :
begin
Result := StrToBool(value);
end;
tkSet :
begin
Result := value;
end;
else
begin
//raise EclYamlSerializerError.Create('Not supported data type!');
end;
end;
//if not Result.IsEmpty then SetPropertyValue(aObject,propinfo,Result);
except
on E : Exception do
begin
raise EYamlDeserializeError.CreateFmt('Deserialize error type "%s" : %s',[aObject.ClassName,e.Message]);
end;
end;
end;
{$ENDIF}
function TRTTIYaml.IsAllowedProperty(aObject : TObject; const aPropertyName : string) : Boolean;
var
propname : string;
begin
Result := True;
propname := aPropertyName.ToLower;
if IsGenericList(aObject) then
begin
if (propname = 'capacity') or (propname = 'count') or (propname = 'ownsobjects') then Result := False;
end
else if (propname = 'refcount') then Result := False;
end;
function TRTTIYaml.IsGenericList(aObject : TObject) : Boolean;
var
cname : string;
begin
if aObject = nil then Exit(False);
cname := aObject.ClassName;
Result := (cname.StartsWith('TObjectList')) or (cname.StartsWith('TList'));
end;
function TRTTIYaml.IsGenericXArray(const aClassName : string) : Boolean;
begin
Result := aClassName.StartsWith('TXArray');
end;
function TRTTIYaml.GetYamlPairByName(aYaml: TYamlObject; const aName: string): TYamlPair;
var
candidate : TYamlPair;
yvalue : TYamlValue;
i : Integer;
begin
if fUseYamlCaseSense then
begin
yvalue := aYaml.GetValue(aName);
if yvalue <> nil then Result := TYamlPair(yvalue);
Exit;
end
else
begin
if aYaml <> nil then
for i := 0 to aYaml.Count - 1 do
begin
candidate := aYaml.Pairs[I];
if (candidate = nil) or (candidate.Value = nil) then Exit(nil);
if CompareText(candidate.Name,aName) = 0 then
Exit(candidate);
end;
end;
Result := nil;
end;
function TRTTIYaml.GetPropertyValue(Instance : TObject; const PropertyName : string) : TValue;
var
pinfo : PPropInfo;
begin
Result := nil;
pinfo := GetPropInfo(Instance,PropertyName);
case pinfo.PropType^.Kind of
tkInteger : Result := GetOrdProp(Instance,pinfo);
tkInt64 : Result := GetInt64Prop(Instance,PropertyName);
tkFloat : Result := GetFloatProp(Instance,PropertyName);
tkChar : Result := Char(GetOrdProp(Instance,PropertyName));
{$IFDEF FPC}
tkWString : Result := GetWideStrProp(Instance,PropertyName);
tkSString,
tkAString,
{$ELSE}
tkWString,
{$ENDIF}
tkLString : Result := GetStrProp(Instance,pinfo);
{$IFDEF FPC}
tkEnumeration :
begin
if fUseEnumNames then Result := GetEnumName(pinfo.PropType,GetOrdProp(Instance,PropertyName))
else Result := GetOrdProp(Instance,PropertyName);
end;
{$ELSE}
tkEnumeration :
begin
if fUseEnumNames then Result := GetEnumName(@pinfo.PropType,GetOrdProp(Instance,PropertyName))
else Result := GetOrdProp(Instance,PropertyName);
end;
{$ENDIF}
tkSet : Result := GetSetProp(Instance,pinfo,True);
{$IFNDEF FPC}
tkClass :
{$ELSE}
tkBool : Result := Boolean(GetOrdProp(Instance,pinfo));
tkObject :
{$ENDIF} Result := GetObjectProp(Instance,pinfo);
tkDynArray : Result := GetDynArrayProp(Instance,pinfo);
end;
end;
function TRTTIYaml.GetPropertyValueFromObject(Instance : TObject; const PropertyName : string) : TValue;
var
ctx : TRttiContext;
rprop : TRttiProperty;
begin
rprop := ctx.GetType(Instance.ClassInfo).GetProperty(PropertyName);
Result := rprop.GetValue(Instance);
end;
{$IFNDEF FPC}
function TRTTIYaml.GetFieldValueFromRecord(aValue : TValue; const FieldName : string) : TValue;
var
ctx : TRttiContext;
rec : TRttiRecordType;
rfield : TRttiField;
begin
rec := ctx.GetType(aValue.TypeInfo).AsRecord;
rfield := rec.GetField(FieldName);
if rfield <> nil then Result := rField.GetValue(aValue.GetReferenceToRawData)
else Result := nil;
end;
{$ENDIF}
procedure TRTTIYaml.SetPropertyValue(Instance : TObject; const PropertyName : string; aValue : TValue);
var
pinfo : PPropInfo;
begin
pinfo := GetPropInfo(Instance,PropertyName);
SetPropertyValue(Instance,pinfo,aValue);
end;
procedure TRTTIYaml.SetPropertyValue(Instance : TObject; aPropInfo : PPropInfo; aValue : TValue);
begin
case aPropInfo.PropType^.Kind of
tkInteger : SetOrdProp(Instance,aPropInfo,aValue.AsInteger);
tkInt64 : SetInt64Prop(Instance,aPropInfo,aValue.AsInt64);
tkFloat : SetFloatProp(Instance,aPropInfo,aValue.AsExtended);
tkChar : SetOrdProp(Instance,aPropInfo,aValue.AsOrdinal);
{$IFDEF FPC}
tkWString : SetWideStrProp(Instance,aPropInfo,aValue.AsString);
tkSString,
tkAString,
{$ELSE}
tkWString,
{$ENDIF}
tkLString : SetStrProp(Instance,aPropInfo,aValue.AsString);
{$IFDEF FPC}
tkBool : SetOrdProp(Instance,aPropInfo,aValue.AsOrdinal);
tkSet : LoadSetProperty(Instance,aPropInfo,aValue.AsString);
{$ENDIF}
tkEnumeration : SetEnumProp(Instance,aPropInfo,aValue.AsString);
{$IFNDEF FPC}
tkClass :
{$ELSE}
tkObject :
{$ENDIF} SetObjectProp(Instance,aPropInfo,aValue.AsObject);
end;
end;
{$IFDEF FPC}
procedure TRTTIYaml.LoadSetProperty(aInstance : TObject; aPropInfo: PPropInfo; const aValue: string);
type
TCardinalSet = set of 0..SizeOf(Cardinal) * 8 - 1;
const
Delims = [' ', ',', '[', ']'];
var
TypeInfo: PTypeInfo;
W: Cardinal;
I, N: Integer;
Count: Integer;
EnumName: string;
begin
W := 0;
TypeInfo := GetTypeData(GetPropType(aPropInfo))^.CompType;