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superobject.pas
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superobject.pas
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(*
* Super Object Toolkit
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (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.mozilla.org/MPL
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
* the specific language governing rights and limitations under the License.
*
* Unit owner : Henri Gourvest <[email protected]>
*
* This unit is inspired from the json c lib:
* Michael Clark <[email protected]>
* http://oss.metaparadigm.com/json-c/
*
* CHANGES:
* v1.0
* + renamed class
* + interfaced object
* + added a new data type: the method
* + parser can now evaluate properties and call methods
* - removed obselet rpc class
* - removed "find" method, now you can use "parse" method instead
* v0.6
* + refactoring
* v0.5
* + new find method to get or set value using a path syntax
* ex: obj.s['obj.prop[1]'] := 'string value';
* obj.a['@obj.array'].b[n] := true; // @ -> create property if necessary
* v0.4
* + bug corrected: AVL tree badly balanced.
* v0.3
* + New validator partially based on the Kwalify syntax.
* + extended syntax to parse unquoted fields.
* + Freepascal compatibility win32/64 Linux32/64.
* + JavaToDelphiDateTime and DelphiToJavaDateTime improved for UTC.
* + new TJsonObject.Compare function.
* v0.2
* + Hashed string list replaced with a faster AVL tree
* + JsonInt data type can be changed to int64
* + JavaToDelphiDateTime and DelphiToJavaDateTime helper fonctions
* + from json-c v0.7
* + Add escaping of backslash to json output
* + Add escaping of foward slash on tokenizing and output
* + Changes to internal tokenizer from using recursion to
* using a depth state structure to allow incremental parsing
* v0.1
* + first release
*)
unit superobject;
{$IFDEF FPC}
{$MODE OBJFPC}{$H+}
{$ENDIF}
interface
uses Classes;
{$DEFINE SUPER_LARGE_INT}
{$DEFINE SUPER_EXTENDED_SYNTAX}
{$DEFINE SUPER_METHOD}
type
{$IFNDEF FPC}
PtrInt = longint;
PtrUInt = Longword;
{$ENDIF}
{$IFDEF SUPER_LARGE_INT}
SuperInt = Int64;
{$ELSE}
SuperInt = Integer;
{$ENDIF}
const
SUPER_ARRAY_LIST_DEFAULT_SIZE = 32;
SUPER_TOKENER_MAX_DEPTH = 32;
SUPER_AVL_MAX_DEPTH = sizeof(longint) * 8;
SUPER_AVL_MASK_HIGH_BIT = not ((not longword(0)) shr 1);
type
// forward declarations
TSuperObject = class;
ISuperObject = interface;
TSuperArray = class;
(* AVL Tree
* This is a "special" autobalanced AVL tree
* It use a hash value for fast compare
*)
TSuperAvlBitArray = set of 0..SUPER_AVL_MAX_DEPTH - 1;
TSuperAvlSearchType = (stEQual, stLess, stGreater);
TSuperAvlSearchTypes = set of TSuperAvlSearchType;
TSuperAvlIterator = class;
TSuperAvlEntry = class
private
FGt, FLt: TSuperAvlEntry;
FBf: integer;
FHash: Cardinal;
FName: PChar;
FPtr: Pointer;
function GetValue: ISuperObject;
procedure SetValue(const val: ISuperObject);
public
class function Hash(k: PChar): Cardinal; virtual;
constructor Create(AName: PChar; Obj: Pointer); virtual;
destructor Destroy; override;
property Name: PChar read FName;
property Ptr: Pointer read FPtr;
property Value: ISuperObject read GetValue write SetValue;
end;
TSuperAvlTree = class
private
FRoot: TSuperAvlEntry;
FCount: Integer;
function balance(bal: TSuperAvlEntry): TSuperAvlEntry;
protected
procedure doDeleteEntry(Entry: TSuperAvlEntry; all: boolean); virtual;
function CompareNodeNode(node1, node2: TSuperAvlEntry): integer; virtual;
function CompareKeyNode(k: PChar; h: TSuperAvlEntry): integer; virtual;
function Insert(h: TSuperAvlEntry): TSuperAvlEntry; virtual;
function Search(k: PChar; st: TSuperAvlSearchTypes = [stEqual]): TSuperAvlEntry; virtual;
public
constructor Create; virtual;
destructor Destroy; override;
function IsEmpty: boolean;
procedure Clear(all: boolean = false); virtual;
procedure Delete(k: PChar);
function GetEnumerator: TSuperAvlIterator;
property count: Integer read FCount;
end;
TSuperTableString = class(TSuperAvlTree)
protected
procedure doDeleteEntry(Entry: TSuperAvlEntry; all: boolean); override;
public
function Put(k: PChar; Obj: ISuperObject): ISuperObject;
function Get(k: PChar): ISuperObject;
function GetValues: ISuperObject;
function GetNames: ISuperObject;
end;
TSuperAvlIterator = class
private
FTree: TSuperAvlTree;
FBranch: TSuperAvlBitArray;
FDepth: longint;
FPath: array[0..SUPER_AVL_MAX_DEPTH - 2] of TSuperAvlEntry;
public
constructor Create(tree: TSuperAvlTree); virtual;
procedure Search(k: PChar; st: TSuperAvlSearchTypes = [stEQual]);
procedure First;
procedure Last;
function GetIter: TSuperAvlEntry;
procedure Next;
procedure Prior;
// delphi enumerator
function MoveNext: boolean;
property Current: TSuperAvlEntry read GetIter;
end;
TSuperObjectArray = array[0..(high(PtrInt) div sizeof(TSuperObject))-1] of ISuperObject;
PSuperObjectArray = ^TSuperObjectArray;
{$IFDEF SUPER_METHOD}
TSuperMethod = procedure(This, Params: ISuperObject; var Result: ISuperObject);
{$ENDIF}
TSuperArray = class
private
FArray: PSuperObjectArray;
FLength: Integer;
FSize: Integer;
function Expand(max: Integer): Integer;
protected
function GetO(const index: integer): ISuperObject;
procedure PutO(const index: integer; Value: ISuperObject);
function GetB(const index: integer): Boolean;
procedure PutB(const index: integer; Value: Boolean);
function GetI(const index: integer): SuperInt;
procedure PutI(const index: integer; Value: SuperInt);
function GetD(const index: integer): Double;
procedure PutD(const index: integer; Value: Double);
function GetS(const index: integer): string;
procedure PutS(const index: integer; const Value: string);
{$IFDEF SUPER_METHOD}
function GetM(const index: integer): TSuperMethod;
procedure PutM(const index: integer; Value: TSuperMethod);
{$ENDIF}
function GetA(const index: integer): TSuperArray;
public
constructor Create; virtual;
destructor Destroy; override;
function Add(Data: ISuperObject): Integer;
procedure Clear(all: boolean = false);
property Length: Integer read FLength;
property O[const index: integer]: ISuperObject read GetO write PutO; default;
property B[const index: integer]: boolean read GetB write PutB;
property I[const index: integer]: SuperInt read GetI write PutI;
property D[const index: integer]: Double read GetD write PutD;
property S[const index: integer]: string read GetS write PutS;
{$IFDEF SUPER_METHOD}
property M[const index: integer]: TSuperMethod read GetM write PutM;
{$ENDIF}
property A[const index: integer]: TSuperArray read GetA;
end;
TSuperWriter = class
protected
// abstact methods to overide
function Append(buf: PChar; Size: Integer): Integer; overload; virtual; abstract;
function Append(buf: PChar): Integer; overload; virtual; abstract;
procedure Reset; virtual; abstract;
public
function Write(obj: ISuperObject; format: boolean; level: integer): Integer; virtual;
end;
TSuperWriterString = class(TSuperWriter)
private
FBuf: PChar;
FBPos: integer;
FSize: integer;
protected
function Append(buf: PChar; Size: Integer): Integer; overload; override;
function Append(buf: PChar): Integer; overload; override;
procedure Reset; override;
public
constructor Create; virtual;
destructor Destroy; override;
property Data: PChar read FBuf;
property Size: Integer read FSize;
property Position: integer read FBPos;
end;
TSuperWriterStream = class(TSuperWriter)
private
FStream: TStream;
protected
function Append(buf: PChar; Size: Integer): Integer; override;
function Append(buf: PChar): Integer; override;
procedure Reset; override;
public
constructor Create(AStream: TStream); reintroduce; virtual;
end;
TSuperWriterFake = class(TSuperWriter)
private
FSize: Integer;
protected
function Append(buf: PChar; Size: Integer): Integer; override;
function Append(buf: PChar): Integer; override;
procedure Reset; override;
public
constructor Create; reintroduce; virtual;
property size: integer read FSize;
end;
TSuperWriterSock = class(TSuperWriter)
private
FSocket: longint;
FSize: Integer;
protected
function Append(buf: PChar; Size: Integer): Integer; override;
function Append(buf: PChar): Integer; override;
procedure Reset; override;
public
constructor Create(ASocket: longint); reintroduce; virtual;
property Socket: longint read FSocket;
property Size: Integer read FSize;
end;
TSuperTokenizerError = (
teSuccess,
teContinue,
teDepth,
teParseEof,
teParseUnexpected,
teParseNull,
teParseBoolean,
teParseNumber,
teParseArray,
teParseObjectKeyName,
teParseObjectKeySep,
teParseObjectValueSep,
teParseString,
teParseComment,
teEvalObject,
teEvalArray,
teEvalMethod,
teEvalInt
);
TSuperTokenerState = (
tsEatws,
tsStart,
tsFinish,
tsNull,
tsCommentStart,
tsComment,
tsCommentEol,
tsCommentEnd,
tsString,
tsStringEscape,
{$IFDEF SUPER_EXTENDED_SYNTAX}
tsIdentifier,
{$ENDIF}
tsEscapeUnicode,
tsBoolean,
tsNumber,
tsArray,
tsArrayAdd,
tsArraySep,
tsObjectFieldStart,
tsObjectField,
{$IFDEF SUPER_EXTENDED_SYNTAX}
tsObjectUnquotedField,
{$ENDIF}
tsObjectFieldEnd,
tsObjectValue,
tsObjectValueAdd,
tsObjectSep,
tsEvalProperty,
tsEvalArray,
tsEvalMethod,
tsParamValue,
tsParamPut
);
PSuperTokenerSrec = ^TSuperTokenerSrec;
TSuperTokenerSrec = record
state, saved_state: TSuperTokenerState;
obj: ISuperObject;
current: ISuperObject;
field_name: PChar;
parent: ISuperObject;
gparent: ISuperObject;
end;
TSuperTokenizer = class
public
str: PChar;
pb: TSuperWriterString;
depth, is_double, st_pos, char_offset: Integer;
err: TSuperTokenizerError;
ucs_char: Cardinal;
quote_char: char;
stack: array[0..SUPER_TOKENER_MAX_DEPTH-1] of TSuperTokenerSrec;
public
constructor Create; virtual;
destructor Destroy; override;
procedure ResetLevel(adepth: integer);
procedure Reset;
end;
// supported object types
TSuperType = (
stNull,
stBoolean,
stDouble,
stInt,
stObject,
stArray,
stString
{$IFDEF SUPER_METHOD}
,stMethod
{$ENDIF}
);
TSuperValidateError = (
veRuleMalformated,
veFieldIsRequired,
veInvalidDataType,
veFieldNotFound,
veUnexpectedField,
veDuplicateEntry,
veValueNotInEnum,
veInvalidLength,
veInvalidRange
);
TSuperFindOption = (
foCreatePath,
foPutValue
{$IFDEF SUPER_METHOD}
,foCallMethod
{$ENDIF}
);
TSuperFindOptions = set of TSuperFindOption;
TSuperCompareResult = (cpLess, cpEqu, cpGreat, cpError);
TSuperOnValidateError = procedure(sender: Pointer; error: TSuperValidateError; const objpath: string);
ISuperObject = interface
['{4B86A9E3-E094-4E5A-954A-69048B7B6327}']
function GetDataType: TSuperType;
function GetProcessing: boolean;
procedure SetProcessing(value: boolean);
function GetO(const path: string): ISuperObject;
procedure PutO(const path: string; Value: ISuperObject);
function GetB(const path: string): Boolean;
procedure PutB(const path: string; Value: Boolean);
function GetI(const path: string): SuperInt;
procedure PutI(const path: string; Value: SuperInt);
function GetD(const path: string): Double;
procedure PutD(const path: string; Value: Double);
function GetS(const path: string): string;
procedure PutS(const path: string; const Value: string);
{$IFDEF SUPER_METHOD}
function GetM(const path: string): TSuperMethod;
procedure PutM(const path: string; Value: TSuperMethod);
{$ENDIF}
function GetA(const path: string): TSuperArray;
// Writers
function SaveTo(stream: TStream; format: boolean = false): integer; overload;
function SaveTo(const FileName: string; format: boolean = false): integer; overload;
function SaveTo(socket: longint; format: boolean = false): integer; overload;
function CalcSize(format: boolean = false): integer;
// convert
function AsBoolean: Boolean;
function AsInteger: SuperInt;
function AsDouble: Double;
function AsString: PChar;
function AsArray: TSuperArray;
function AsObject: TSuperTableString;
{$IFDEF SUPER_METHOD}
function AsMethod: TSuperMethod;
{$ENDIF}
function AsJSon(format: boolean = false): PChar;
procedure Clear(all: boolean = false);
property O[const path: string]: ISuperObject read GetO write PutO; default;
property B[const path: string]: boolean read GetB write PutB;
property I[const path: string]: SuperInt read GetI write PutI;
property D[const path: string]: Double read GetD write PutD;
property S[const path: string]: string read GetS write PutS;
{$IFDEF SUPER_METHOD}
property M[const path: string]: TSuperMethod read GetM write PutM;
{$ENDIF}
property A[const path: string]: TSuperArray read GetA;
{$IFDEF SUPER_METHOD}
function call(const path: string; param: ISuperObject = nil): ISuperObject; overload;
function call(const path, param: string): ISuperObject; overload;
{$ENDIF}
// clone a node
function Clone: ISuperObject;
// merges tow objects of same type, if reference is true then nodes are not cloned
procedure Merge(obj: ISuperObject; reference: boolean = false); overload;
procedure Merge(const str: string); overload;
// validate methods
function Validate(const rules: string; const defs: string = ''; callback: TSuperOnValidateError = nil; sender: Pointer = nil): boolean; overload;
function Validate(rules: ISuperObject; defs: ISuperObject = nil; callback: TSuperOnValidateError = nil; sender: Pointer = nil): boolean; overload;
// compare
function Compare(obj: ISuperObject): TSuperCompareResult; overload;
function Compare(const str: string): TSuperCompareResult; overload;
// the data type
function IsType(AType: TSuperType): boolean;
property DataType: TSuperType read GetDataType;
property Processing: boolean read GetProcessing write SetProcessing;
function GetDataPtr: Pointer;
procedure SetDataPtr(const Value: Pointer);
property DataPtr: Pointer read GetDataPtr write SetDataPtr;
end;
TSuperObject = class(TObject, ISuperObject)
private
FRefCount: Integer;
FProcessing: boolean;
FDataType: TSuperType;
Fpb: TSuperWriterString;
FDataPtr: Pointer;
FO: record
case TSuperType of
stBoolean: (c_boolean: boolean);
stDouble: (c_double: double);
stInt: (c_int: SuperInt);
stObject: (c_object: TSuperTableString);
stArray: (c_array: TSuperArray);
stString: (c_string: PChar);
{$IFDEF SUPER_METHOD}
stMethod: (c_method: TSuperMethod);
{$ENDIF}
end;
function GetDataType: TSuperType;
function GetDataPtr: Pointer;
procedure SetDataPtr(const Value: Pointer);
protected
function QueryInterface(const IID: TGUID; out Obj): HResult; virtual; stdcall;
function _AddRef: Integer; virtual; stdcall;
function _Release: Integer; virtual; stdcall;
function GetO(const path: string): ISuperObject;
procedure PutO(const path: string; Value: ISuperObject);
function GetB(const path: string): Boolean;
procedure PutB(const path: string; Value: Boolean);
function GetI(const path: string): SuperInt;
procedure PutI(const path: string; Value: SuperInt);
function GetD(const path: string): Double;
procedure PutD(const path: string; Value: Double);
function GetS(const path: string): string;
procedure PutS(const path: string; const Value: string);
{$IFDEF SUPER_METHOD}
function GetM(const path: string): TSuperMethod;
procedure PutM(const path: string; Value: TSuperMethod);
{$ENDIF}
function GetA(const path: string): TSuperArray;
public
procedure AfterConstruction; override;
procedure BeforeDestruction; override;
class function NewInstance: TObject; override;
property RefCount: Integer read FRefCount;
function GetProcessing: boolean;
procedure SetProcessing(value: boolean);
// Writers
function SaveTo(stream: TStream; format: boolean = false): integer; overload;
function SaveTo(const FileName: string; format: boolean = false): integer; overload;
function SaveTo(socket: longint; format: boolean = false): integer; overload;
function CalcSize(format: boolean = false): integer;
function AsJSon(format: boolean = false): PChar;
// parser ... owned!
class function Parse(s: PChar; partial: boolean = true; this: ISuperObject = nil; options: TSuperFindOptions = [];
put: ISuperObject = nil; dt: TSuperType = stNull): ISuperObject;
class function ParseEx(tok: TSuperTokenizer; str: PChar; len: integer; this: ISuperObject = nil;
options: TSuperFindOptions = []; put: ISuperObject = nil; dt: TSuperType = stNull): ISuperObject;
// constructors / destructor
constructor Create(jt: TSuperType = stObject); overload; virtual;
constructor Create(b: boolean); overload; virtual;
constructor Create(i: SuperInt); overload; virtual;
constructor Create(d: double); overload; virtual;
constructor Create(p: PChar); overload; virtual;
constructor Create(const s: string); overload; virtual;
{$IFDEF SUPER_METHOD}
constructor Create(m: TSuperMethod); overload; virtual;
{$ENDIF}
destructor Destroy; override;
// convert
function AsBoolean: Boolean;
function AsInteger: SuperInt;
function AsDouble: Double;
function AsString: PChar;
function AsArray: TSuperArray;
function AsObject: TSuperTableString;
{$IFDEF SUPER_METHOD}
function AsMethod: TSuperMethod;
{$ENDIF}
procedure Clear(all: boolean = false); virtual;
property O[const path: string]: ISuperObject read GetO write PutO; default;
property B[const path: string]: boolean read GetB write PutB;
property I[const path: string]: SuperInt read GetI write PutI;
property D[const path: string]: Double read GetD write PutD;
property S[const path: string]: string read GetS write PutS;
{$IFDEF SUPER_METHOD}
property M[const path: string]: TSuperMethod read GetM write PutM;
{$ENDIF}
property A[const path: string]: TSuperArray read GetA;
{$IFDEF SUPER_METHOD}
function call(const path: string; param: ISuperObject = nil): ISuperObject; overload; virtual;
function call(const path, param: string): ISuperObject; overload; virtual;
{$ENDIF}
// clone a node
function Clone: ISuperObject;
// merges tow objects of same type, if reference is true then nodes are not cloned
procedure Merge(obj: ISuperObject; reference: boolean = false); overload;
procedure Merge(const str: string); overload;
// validate methods
function Validate(const rules: string; const defs: string = ''; callback: TSuperOnValidateError = nil; sender: Pointer = nil): boolean; overload;
function Validate(rules: ISuperObject; defs: ISuperObject = nil; callback: TSuperOnValidateError = nil; sender: Pointer = nil): boolean; overload;
// compare
function Compare(obj: ISuperObject): TSuperCompareResult; overload;
function Compare(const str: string): TSuperCompareResult; overload;
// the data type
function IsType(AType: TSuperType): boolean;
property DataType: TSuperType read GetDataType;
// a data pointer to link to something ele, a treeview for example
property DataPtr: Pointer read GetDataPtr write SetDataPtr;
property Processing: boolean read GetProcessing;
end;
TSuperObjectIter = record
key: PChar;
val: ISuperObject;
Ite: TSuperAvlIterator;
end;
function ObjectIsError(obj: TSuperObject): boolean;
function ObjectIsType(obj: ISuperObject; typ: TSuperType): boolean;
function ObjectGetType(obj: ISuperObject): TSuperType;
function ObjectFindFirst(obj: ISuperObject; var F: TSuperObjectIter): boolean;
function ObjectFindNext(var F: TSuperObjectIter): boolean;
procedure ObjectFindClose(var F: TSuperObjectIter);
function SO(const s: string = '{}'): ISuperObject;
function JavaToDelphiDateTime(const dt: int64): TDateTime;
function DelphiToJavaDateTime(const dt: TDateTime): int64;
implementation
uses sysutils,
{$IFDEF UNIX}
baseunix, unix
{$ELSE}
Windows
{$ENDIF}
{$IFDEF FPC}
,sockets
{$ELSE}
,WinSock
{$ENDIF};
{$IFDEF DEBUG}
var
debugcount: integer = 0;
{$ENDIF}
const
super_number_chars = '0123456789.+-e';
super_number_chars_set = ['0'..'9','.','+','-','e'];
super_hex_chars = '0123456789abcdef';
super_hex_chars_set = ['0'..'9','a'..'f'];
{$IFDEF UNIX}
{$linklib c}
function sprintf(buffer, format: PChar; const args: array of const): longint; cdecl; external;
{$ENDIF}
{$ifdef MSWINDOWS}
function sprintf(buffer, format: PChar): longint; varargs; cdecl; external 'msvcrt.dll';
{$endif}
{$IFDEF UNIX}
function GetTimeBias: integer;
var
TimeVal: TTimeVal;
TimeZone: TTimeZone;
begin
fpGetTimeOfDay(@TimeVal, @TimeZone);
Result := TimeZone.tz_minuteswest;
end;
{$ELSE}
function GetTimeBias: integer;
var
tzi : TTimeZoneInformation;
begin
if GetTimeZoneInformation (tzi) = TIME_ZONE_ID_DAYLIGHT then
Result := tzi.Bias + tzi.DaylightBias else
Result := tzi.Bias;
end;
{$ENDIF}
function JavaToDelphiDateTime(const dt: int64): TDateTime;
begin
Result := 25569 + ((dt - (GetTimeBias * 60000)) / 86400000);
end;
function DelphiToJavaDateTime(const dt: TDateTime): int64;
begin
Result := Round((dt - 25569) * 86400000) + (GetTimeBias * 60000);
end;
function FloatToStr(d: Double): string;
var
buffer: array[0..255] of char;
p1, p2: PChar;
begin
{$IFDEF UNIX}
sprintf(buffer, '%lf', [d]);
{$ELSE}
sprintf(buffer, '%lf', d);
{$ENDIF}
p1 := @buffer[0];
p2 := nil;
while true do
begin
case p1^ of
'.', '1'..'9': p2 := p1;
'0':;
else
Break
end;
inc(p1);
end;
if p2 <> nil then p2[1] := #0;
Result := buffer;
end;
function strdup(s: PChar): PChar;
var
l: Integer;
begin
if s <> nil then
begin
l := StrLen(s);
GetMem(Result, l+1);
move(s^, Result^, l);
Result[l] := #0;
end else
Result := nil;
end;
function SO(const s: string): ISuperObject;
begin
Result := TSuperObject.Parse(PChar(s));
end;
function ObjectIsError(obj: TSuperObject): boolean;
begin
Result := PtrUInt(obj) > PtrUInt(-4000);
end;
function ObjectIsType(obj: ISuperObject; typ: TSuperType): boolean;
begin
if obj <> nil then
Result := typ = obj.DataType else
Result := typ = stNull;
end;
function ObjectGetType(obj: ISuperObject): TSuperType;
begin
if obj <> nil then
Result := obj.DataType else
Result := stNull;
end;
function ObjectFindFirst(obj: ISuperObject; var F: TSuperObjectIter): boolean;
var
i: TSuperAvlEntry;
begin
if ObjectIsType(obj, stObject) then
begin
F.Ite := TSuperAvlIterator.Create(obj.AsObject);
F.Ite.First;
i := F.Ite.GetIter;
if i <> nil then
begin
f.key := i.Name;
f.val := i.Value;
Result := true;
end else
Result := False;
end else
Result := False;
end;
function ObjectFindNext(var F: TSuperObjectIter): boolean;
var
i: TSuperAvlEntry;
begin
F.Ite.Next;
i := F.Ite.GetIter;
if i <> nil then
begin
f.key := i.FName;
f.val := i.Value;
Result := true;
end else
Result := False;
end;
procedure ObjectFindClose(var F: TSuperObjectIter);
begin
F.Ite.Free;
F.val := nil;
end;
{ TSuperObject }
constructor TSuperObject.Create(jt: TSuperType);
begin
inherited Create;
{$IFDEF DEBUG}
InterlockedIncrement(debugcount);
{$ENDIF}
FProcessing := false;
FDataPtr := nil;
FDataType := jt;
case FDataType of
stObject: FO.c_object := TSuperTableString.Create;
stArray: FO.c_array := TSuperArray.Create;
else
FO.c_object := nil;
end;
Fpb := nil;
end;
constructor TSuperObject.Create(b: boolean);
begin
Create(stBoolean);
FO.c_boolean := b;
end;
constructor TSuperObject.Create(i: SuperInt);
begin
Create(stInt);
FO.c_int := i;
end;
constructor TSuperObject.Create(d: double);
begin
Create(stDouble);
FO.c_double := d;
end;
constructor TSuperObject.Create(p: PChar);
begin
Create(stString);
FO.c_string := strdup(p);
end;
destructor TSuperObject.Destroy;
begin
{$IFDEF DEBUG}
InterlockedDecrement(debugcount);
{$ENDIF}
case FDataType of
stObject: FO.c_object.Free;
stString: FreeMem(FO.c_string);
stArray: FO.c_array.Free;
end;
if Fpb <> nil then Fpb.Free;
inherited;
end;
function TSuperObject.IsType(AType: TSuperType): boolean;
begin
Result := AType = FDataType;
end;
function TSuperObject.AsBoolean: boolean;
begin
case FDataType of
stBoolean: Result := FO.c_boolean;
stInt: Result := (FO.c_int <> 0);
stDouble: Result := (FO.c_double <> 0);
stString: Result := (strlen(FO.c_string) <> 0);
else
Result := True;
end;
end;
function TSuperObject.AsInteger: SuperInt;
var
code: integer;
cint: SuperInt;
begin
case FDataType of
stInt: Result := FO.c_int;
stDouble: Result := round(FO.c_double);
stBoolean: Result := ord(FO.c_boolean);
stString:
begin
Val(FO.c_string, cint, code);
if code = 0 then
Result := cint else
Result := 0;
end;
else
Result := 0;
end;
end;
function TSuperObject.AsDouble: Double;
var
code: integer;
cdouble: double;
begin
case FDataType of
stDouble: Result := FO.c_double;
stInt: Result := FO.c_int;
stBoolean: Result := ord(FO.c_boolean);
stString:
begin
Val(FO.c_string, cdouble, code);
if code = 0 then
Result := cdouble else
Result := 0.0;
end;
else
Result := 0.0;
end;
end;
function TSuperObject.AsString: PChar;
begin
if FDataType = stString then
Result := FO.c_string else
Result := AsJSon(false);
end;
procedure TSuperObject.AfterConstruction;
begin
InterlockedDecrement(FRefCount);
end;
procedure TSuperObject.BeforeDestruction;
begin
if RefCount <> 0 then
raise Exception.Create('Invalid pointer');
end;
function TSuperObject.AsArray: TSuperArray;
begin
if FDataType = stArray then
Result := FO.c_array else
Result := nil;
end;
function TSuperObject.AsObject: TSuperTableString;
begin
if FDataType = stObject then
Result := FO.c_object else
Result := nil;
end;
function TSuperObject.AsJSon(format: boolean): PChar;
begin
if(Fpb = nil) then
Fpb := TSuperWriterString.Create else
Fpb.Reset;
if(Fpb.Write(self, format, 0) < 0) then
begin
Result := '';
Exit;
end;
if Fpb.FBPos > 0 then
Result := Fpb.FBuf else
Result := '';
end;
class function TSuperObject.Parse(s: PChar; partial: boolean; this: ISuperObject;
options: TSuperFindOptions; put: ISuperObject; dt: TSuperType): ISuperObject;
var
tok: TSuperTokenizer;
obj: ISuperObject;
begin
tok := TSuperTokenizer.Create;
obj := ParseEx(tok, s, -1, this, options, put, dt);
if(tok.err <> teSuccess) or (not partial and (s[tok.char_offset] <> #0)) then
Result := nil else
Result := obj;
tok.Free;
end;
class function TSuperObject.ParseEx(tok: TSuperTokenizer; str: PChar; len: integer;
this: ISuperObject; options: TSuperFindOptions; put: ISuperObject; dt: TSuperType): ISuperObject;
function hexdigit(x: char): byte;
begin
if x <= '9' then
Result := byte(x) - byte('0') else
Result := (byte(x) and 7) + 9;
end;
function min(v1, v2: integer): integer; begin if v1 < v2 then result := v1 else result := v2 end;
var
obj: ISuperObject;
c: char;
utf_out: array[0..2] of byte;
{$IFDEF SUPER_METHOD}
sm: TSuperMethod;
{$ENDIF}
numi: SuperInt;
numd: double;
code: integer;
TokRec: PSuperTokenerSrec;
{$IFDEF SUPER_EXTENDED_SYNTAX}
evalstack: integer;
{$ENDIF}
const
spaces = [' ',#8,#10,#13,#9];
alphanum = ['-','_','a'..'z','A'..'Z','0'..'9'];