synhighlighterunreal.pas

SynEditStudio delphi 代码编辑器

{-------------------------------------------------------------------------------
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.
                                          PP - 2001/10/24:
The Original Code is based on the UnrealSyn.pas file from the
mwEdit component suite by Martin Waldenburg and other developers, the Initial
Author of this file is Dean Harmon.
All Rights Reserved.

Contributors to the SynEdit and mwEdit projects are listed in the
Contributors.txt file.

Alternatively, the contents of this file may be used under the terms of the
GNU General Public License Version 2 or later (the "GPL"), in which case
the provisions of the GPL are applicable instead of those above.
If you wish to allow use of your version of this file only under the terms
of the GPL and not to allow others to use your version of this file
under the MPL, indicate your decision by deleting the provisions above and
replace them with the notice and other provisions required by the GPL.
If you do not delete the provisions above, a recipient may use your version
of this file under either the MPL or the GPL.

$Id: SynHighlighterUnreal.pas,v 1.18 2005/01/28 16:53:25 maelh Exp $

You may retrieve the latest version of this file at the SynEdit home page,
located at http://SynEdit.SourceForge.net

Known Issues:
-------------------------------------------------------------------------------}
{
@abstract(Provides a Unreal syntax highlighter for SynEdit)
@author(Dean Harmon)
@created(2000)
@lastmod(2001-06-29)
}

{$IFNDEF QSYNHIGHLIGHTERUNREAL}
unit SynHighlighterUnreal;
{$ENDIF}

{$I SynEdit.inc}

interface

uses
{$IFDEF SYN_CLX}
  QGraphics,
  QSynEditHighlighter,
  QSynEditTypes,
{$ELSE}
  Graphics,
  Registry,
  Windows, // registry constants
  SynEditHighlighter,
  SynEditTypes,
{$ENDIF}
  SysUtils,
  Classes;

const
  MAXIDENTTABLE = 238;

type
  TtkTokenKind = (
    tkComment,
    tkDirective,
    tkIdentifier,
    tkKey,
    tkKey2,
    tkNull,
    tkNumber,
    tkSpace,
    tkString,
    tkString2,
    tkSymbol,
    tkUnknown);

  TxtkTokenKind = (
    xtkAdd, xtkAddAssign, xtkAnd, xtkAndAssign, xtkArrow, xtkAssign,
    xtkBitComplement, xtkBraceClose, xtkBraceOpen, xtkColon, xtkComma,
    xtkDecrement, xtkDivide, xtkDivideAssign, xtkEllipse, xtkGreaterThan,
    xtkGreaterThanEqual, xtkIncOr, xtkIncOrAssign, xtkIncrement, xtkLessThan,
    xtkLessThanEqual, xtkLogAnd, xtkLogComplement, xtkLogEqual, xtkLogOr,
    xtkMod, xtkModAssign, xtkMultiplyAssign, xtkNotEqual, xtkPoint, xtkQuestion,
    xtkRoundClose, xtkRoundOpen, xtkScopeResolution, xtkSemiColon, xtkShiftLeft,
    xtkShiftLeftAssign, xtkShiftRight, xtkShiftRightAssign, xtkSquareClose,
    xtkSquareOpen, xtkStar, xtkSubtract, xtkSubtractAssign, xtkXor,
    xtkXorAssign);

  TRangeState = (rsANil, rsAnsiC, rsDirective, rsDirectiveComment, rsUnKnown);

  TProcTableProc = procedure of Object;

  PIdentFuncTableFunc = ^TIdentFuncTableFunc;
  TIdentFuncTableFunc = function: TtkTokenKind of Object;

  TSynUnrealSyn = class(TSynCustomHighlighter)
  private
    fRange: TRangeState;
    fLine: PChar;
    fProcTable: array[#0..#255] of TProcTableProc;
    Run: LongInt;
    FRoundCount: Integer;
    FSquareCount: Integer;
    fStringLen: Integer;
    fToIdent: PChar;
    fTokenPos: Integer;
    FTokenID: TtkTokenKind;
    FExtTokenID: TxtkTokenKind;
    fLineNumber: Integer;
    fIdentFuncTable: array[0..MAXIDENTTABLE] of TIdentFuncTableFunc;
    fCommentAttri: TSynHighlighterAttributes;
    fDirecAttri: TSynHighlighterAttributes;
    fIdentifierAttri: TSynHighlighterAttributes;
    fInvalidAttri: TSynHighlighterAttributes;
    fKeyAttri: TSynHighlighterAttributes;
    fKey2Attri: TSynHighlighterAttributes;
    fNumberAttri: TSynHighlighterAttributes;
    fSpaceAttri: TSynHighlighterAttributes;
    fStringAttri: TSynHighlighterAttributes;
    fString2Attri: TSynHighlighterAttributes;
    fSymbolAttri: TSynHighlighterAttributes;

    function KeyHash(ToHash: PChar): Integer;
    function KeyComp(const aKey: String): Boolean;
    function Func15: TtkTokenKind;
    function Func17: TtkTokenKind;
    function Func19: TtkTokenKind;
    function Func20: TtkTokenKind;
    function Func28: TtkTokenKind;
    function Func33: TtkTokenKind;
    function Func35: TtkTokenKind;
    function Func37: TtkTokenKind;
    function Func39: TtkTokenKind;
    function Func40: TtkTokenKind;
    function Func41: TtkTokenKind;
    function Func42: TtkTokenKind;
    function Func43: TtkTokenKind;
    function Func44: TtkTokenKind;
    function Func45: TtkTokenKind;
    function Func48: TtkTokenKind;
    function Func49: TtkTokenKind;
    function Func50: TtkTokenKind;
    function Func51: TtkTokenKind;
    function Func52: TtkTokenKind;
    function Func53: TtkTokenKind;
    function Func54: TtkTokenKind;
    function Func55: TtkTokenKind;
    function Func56: TtkTokenKind;
    function Func57: TtkTokenKind;
    function Func59: TtkTokenKind;
    function Func62: TtkTokenKind;
    function Func63: TtkTokenKind;
    function Func64: TtkTokenKind;
    function Func65: TtkTokenKind;
    function Func66: TtkTokenKind;
    function Func69: TtkTokenKind;
    function Func70: TtkTokenKind;
    function Func71: TtkTokenKind;
    function Func72: TtkTokenKind;
    function Func73: TtkTokenKind;
    function Func74: TtkTokenKind;
    function Func76: TtkTokenKind;
    function Func78: TtkTokenKind;
    function Func79: TtkTokenKind;
    function Func80: TtkTokenKind;
    function Func81: TtkTokenKind;
    function Func82: TtkTokenKind;
    function Func83: TtkTokenKind;
    function Func84: TtkTokenKind;
    function Func85: TtkTokenKind;
    function Func87: TtkTokenKind;
    function Func89: TtkTokenKind;
    function Func91: TtkTokenKind;
    function Func92: TtkTokenKind;
    function Func96: TtkTokenKind;
    function Func97: TtkTokenKind;
    function Func98: TtkTokenKind;
    function Func99: TtkTokenKind;
    function Func100: TtkTokenKind;
    function Func101: TtkTokenKind;
    function Func102: TtkTokenKind;
    function Func103: TtkTokenKind;
    function Func104: TtkTokenKind;
    function Func106: TtkTokenKind;
    function Func107: TtkTokenKind;
    function Func108: TtkTokenKind;
    function Func109: TtkTokenKind;
    function Func113: TtkTokenKind;
    function Func115: TtkTokenKind;
    function Func120: TtkTokenKind;
    function Func122: TtkTokenKind;
    function Func126: TtkTokenKind;
    function Func127: TtkTokenKind;
    function Func128: TtkTokenKind;
    function Func135: TtkTokenKind;
    function Func136: TtkTokenKind;
    function Func143: TtkTokenKind;
    function Func144: TtkTokenKind;
    function Func146: TtkTokenKind;
    function Func147: TtkTokenKind;
    function Func148: TtkTokenKind;
    function Func156: TtkTokenKind;
    function Func167: TtkTokenKind;
    function Func172: TtkTokenKind;
    function Func174: TtkTokenKind;
    function Func178: TtkTokenKind;
    function Func185: TtkTokenKind;
    function Func190: TtkTokenKind;
    function Func192: TtkTokenKind;
    function Func193: TtkTokenKind;
    function Func210: TtkTokenKind;
    function Func218: TtkTokenKind;
    function Func238: TtkTokenKind;

    procedure AnsiCProc;
    procedure AndSymbolProc;
    procedure AsciiCharProc;
    procedure BraceCloseProc;
    procedure BraceOpenProc;
    procedure CRProc;
    procedure ColonProc;
    procedure CommaProc;
    procedure DirectiveProc;
    procedure EqualProc;
    procedure GreaterProc;
    procedure IdentProc;
    procedure LFProc;
    procedure LowerProc;
    procedure MinusProc;
    procedure ModSymbolProc;
    procedure NotSymbolProc;
    procedure NullProc;
    procedure NumberProc;
    procedure OrSymbolProc;
    procedure PlusProc;
    procedure PointProc;
    procedure QuestionProc;
    procedure RoundCloseProc;
    procedure RoundOpenProc;
    procedure SemiColonProc;
    procedure SlashProc;
    procedure SpaceProc;
    procedure SquareCloseProc;
    procedure SquareOpenProc;
    procedure StarProc;
    procedure StringProc;
    procedure DollarSignProc;
    procedure TildeProc;
    procedure XOrSymbolProc;
    procedure UnknownProc;
    function AltFunc: TtkTokenKind;
    procedure InitIdent;
    function IdentKind(MayBe: PChar): TtkTokenKind;
    procedure MakeMethodTables;
  protected
    function GetIdentChars: TSynIdentChars; override;
    function GetExtTokenID: TxtkTokenKind;
    function IsFilterStored: Boolean; override;
    function GetSampleSource: string; override;
  public
    class function GetCapabilities: TSynHighlighterCapabilities; override;
    class function GetLanguageName: string; override;
  public
    constructor Create(AOwner: TComponent); override;
    function GetDefaultAttribute(Index: integer): TSynHighlighterAttributes;
      override;
    function GetEol: Boolean; override;
    function GetRange: Pointer; override;
    function GetTokenID: TtkTokenKind;
    procedure SetLine(NewValue: String; LineNumber:Integer); override;
    function GetToken: String; override;
    function GetTokenAttribute: TSynHighlighterAttributes; override;
    function GetTokenKind: integer; override;
    function GetTokenPos: Integer; override;
    procedure Next; override;
    procedure SetRange(Value: Pointer); override;
    procedure ResetRange; override;
    function UseUserSettings(settingIndex: integer): boolean; override;
    procedure EnumUserSettings(settings: TStrings); override;
    property ExtTokenID: TxtkTokenKind read GetExtTokenID;
  published
    property CommentAttri: TSynHighlighterAttributes read fCommentAttri
      write fCommentAttri;
    property DirecAttri: TSynHighlighterAttributes read fDirecAttri
      write fDirecAttri;
    property IdentifierAttri: TSynHighlighterAttributes read fIdentifierAttri
      write fIdentifierAttri;
    property InvalidAttri: TSynHighlighterAttributes read fInvalidAttri
      write fInvalidAttri;
    property KeyAttri: TSynHighlighterAttributes read fKeyAttri write fKeyAttri;
    property Key2Attri: TSynHighlighterAttributes read fKey2Attri write fKey2Attri;
    property NumberAttri: TSynHighlighterAttributes read fNumberAttri
      write fNumberAttri;
    property SpaceAttri: TSynHighlighterAttributes read fSpaceAttri
      write fSpaceAttri;
    property StringAttri: TSynHighlighterAttributes read fStringAttri
      write fStringAttri;
    property SingleStringAttri: TSynHighlighterAttributes read fString2Attri
      write fString2Attri;
    property SymbolAttri: TSynHighlighterAttributes read fSymbolAttri
      write fSymbolAttri;
  end;

implementation

uses
{$IFDEF SYN_CLX}
  QSynEditStrConst;
{$ELSE}
  SynEditStrConst;
{$ENDIF}

var
  Identifiers: array[#0..#255] of ByteBool;
  mHashTable: array[#0..#255] of Integer;

procedure MakeIdentTable;
var
  I: Char;
begin
  for I := #0 to #255 do
  begin
    Case I of
      '_', '0'..'9', 'a'..'z', 'A'..'Z': Identifiers[I] := True;
    else Identifiers[I] := False;
    end;
    Case I in['_', 'a'..'z', 'A'..'Z'] of
      True:
        begin
          if (I > #64) and (I < #91) then mHashTable[I] := Ord(I) - 64 else
            if (I > #96) then mHashTable[I] := Ord(I) - 96;
        end;
    else mHashTable[I] := 0;
    end;
  end;
end;

procedure TSynUnrealSyn.InitIdent;
var
  I: Integer;
  pF: PIdentFuncTableFunc;
begin
  pF := PIdentFuncTableFunc(@fIdentFuncTable);
  for I := Low(fIdentFuncTable) to High(fIdentFuncTable) do begin
    pF^ := AltFunc;
    Inc(pF);
  end;
  fIdentFuncTable[15] := Func15;
  fIdentFuncTable[17] := Func17;
  fIdentFuncTable[19] := Func19;
  fIdentFuncTable[20] := Func20;
  fIdentFuncTable[28] := Func28;
  fIdentFuncTable[33] := Func33;
  fIdentFuncTable[35] := Func35;
  fIdentFuncTable[37] := Func37;
  fIdentFuncTable[39] := Func39;
  fIdentFuncTable[40] := Func40;
  fIdentFuncTable[41] := Func41;
  fIdentFuncTable[42] := Func42;
  fIdentFuncTable[43] := Func43;
  fIdentFuncTable[44] := Func44;
  fIdentFuncTable[45] := Func45;
  fIdentFuncTable[48] := Func48;
  fIdentFuncTable[49] := Func49;
  fIdentFuncTable[50] := Func50;
  fIdentFuncTable[51] := Func51;
  fIdentFuncTable[52] := Func52;
  fIdentFuncTable[53] := Func53;
  fIdentFuncTable[54] := Func54;
  fIdentFuncTable[55] := Func55;
  fIdentFuncTable[56] := Func56;
  fIdentFuncTable[57] := Func57;
  fIdentFuncTable[59] := Func59;
  fIdentFuncTable[62] := Func62;
  fIdentFuncTable[63] := Func63;
  fIdentFuncTable[64] := Func64;
  fIdentFuncTable[65] := Func65;
  fIdentFuncTable[66] := Func66;
  fIdentFuncTable[69] := Func69;
  fIdentFuncTable[70] := Func70;
  fIdentFuncTable[71] := Func71;
  fIdentFuncTable[72] := Func72;
  fIdentFuncTable[73] := Func73;
  fIdentFuncTable[74] := Func74;
  fIdentFuncTable[76] := Func76;
  fIdentFuncTable[78] := Func78;
  fIdentFuncTable[79] := Func79;
  fIdentFuncTable[80] := Func80;
  fIdentFuncTable[81] := Func81;
  fIdentFuncTable[82] := Func82;
  fIdentFuncTable[83] := Func83;
  fIdentFuncTable[84] := Func84;
  fIdentFuncTable[85] := Func85;
  fIdentFuncTable[87] := Func87;
  fIdentFuncTable[89] := Func89;
  fIdentFuncTable[91] := Func91;
  fIdentFuncTable[92] := Func92;
  fIdentFuncTable[96] := Func96;
  fIdentFuncTable[97] := Func97;
  fIdentFuncTable[98] := Func98;
  fIdentFuncTable[99] := Func99;
  fIdentFuncTable[100] := Func100;
  fIdentFuncTable[101] := Func101;
  fIdentFuncTable[102] := Func102;
  fIdentFuncTable[103] := Func103;
  fIdentFuncTable[104] := Func104;
  fIdentFuncTable[106] := Func106;
  fIdentFuncTable[107] := Func107;
  fIdentFuncTable[108] := Func108;
  fIdentFuncTable[109] := Func109;
  fIdentFuncTable[113] := Func113;
  fIdentFuncTable[115] := Func115;
  fIdentFuncTable[120] := Func120;
  fIdentFuncTable[122] := Func122;
  fIdentFuncTable[126] := Func126;
  fIdentFuncTable[127] := Func127;
  fIdentFuncTable[128] := Func128;
  fIdentFuncTable[135] := Func135;
  fIdentFuncTable[136] := Func136;
  fIdentFuncTable[143] := Func143;
  fIdentFuncTable[144] := Func144;
  fIdentFuncTable[146] := Func146;
  fIdentFuncTable[147] := Func147;
  fIdentFuncTable[148] := Func148;
  fIdentFuncTable[156] := Func156;
  fIdentFuncTable[167] := Func167;
  fIdentFuncTable[172] := Func172;
  fIdentFuncTable[174] := Func174;
  fIdentFuncTable[178] := Func178;
  fIdentFuncTable[185] := Func185;
  fIdentFuncTable[190] := Func190;
  fIdentFuncTable[192] := Func192;
  fIdentFuncTable[193] := Func193;
  fIdentFuncTable[210] := Func210;
  fIdentFuncTable[218] := Func218;
  fIdentFuncTable[238] := Func238;
end;

function TSynUnrealSyn.KeyHash(ToHash: PChar): Integer;
begin
  Result := 0;

  while ToHash^ in TSynValidStringChars do
  begin
    inc(Result, mHashTable[ToHash^]);
    inc(ToHash);
  end;
  fStringLen := ToHash - fToIdent;
end; { KeyHash }

function TSynUnrealSyn.KeyComp(const aKey: String): Boolean;
var
  I: Integer;
  Temp: PChar;
begin
  Temp := fToIdent;
  if Length(aKey) = fStringLen then
  begin
    Result := True;
    for i := 1 to fStringLen do
    begin
      if Uppercase(Temp^) <> aKey[i] then
      begin
        Result := False;
        break;
      end;
      inc(Temp);
    end;
  end else Result := False;
end; { KeyComp }

function TSynUnrealSyn.Func15: TtkTokenKind;
begin
  if KeyComp('IF') then Result := tkKey else Result := tkIdentifier;
end;

function TSynUnrealSyn.Func17: TtkTokenKind;