synhighlighterphp.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.

The Original Code is: SynHighlighterPHP.pas, released 2000-04-21.
The Original Code is based on the wmPHPSyn.pas file from the
mwEdit component suite by Martin Waldenburg and other developers, the Initial
Author of this file is Willo van der Merwe.
"Heredoc" syntax highlighting implementation by Marko Njezic.
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: SynHighlighterPHP.pas,v 1.23 2005/01/28 16:53:24 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 PHP syntax highlighter for SynEdit)
@author(Willo van der Merwe <[e-mail]>, converted to SynEdit by Bruno Mikkelsen <[e-mail]>)
@created(1999, converted to SynEdit 2000-04-21)
@lastmod(2000-06-23)
The SynHighlighterPHP unit provides SynEdit with a PHP syntax highlighter.
Thanks to Martin Waldenburg.
}

{$IFNDEF QSYNHIGHLIGHTERPHP}
unit SynHighlighterPHP;
{$ENDIF}

{$I SynEdit.inc}

interface

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

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

{$IFDEF SYN_HEREDOC}
  TRangeState = (rsUnKnown, rsString39, rsString34, rsComment, rsVarExpansion,
    rsHeredoc);

  TRangePointer = packed record
    case Boolean of
      True  : (Ptr: Pointer);
      False : (Range: Byte; Length: Byte; Checksum: Word);
    end;
{$ELSE}
  TRangeState = (rsUnKnown, rsString39, rsString34, rsComment, rsVarExpansion);
{$ENDIF}

  TProcTableProc = procedure of object;

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

type
  TSynPHPSyn = class(TSynCustomHighlighter)
  private
    fRange: TRangeState;
{$IFDEF SYN_HEREDOC}
    fHeredocLength : Byte;
    fHeredocChecksum : Word;
{$ENDIF}
    fLine: PChar;
    fLineNumber: Integer;
    fProcTable: array[#0..#255] of TProcTableProc;
    Run: LongInt;
    fStringLen: Integer;
    fToIdent: PChar;
    fTokenPos: Integer;
    FTokenID: TtkTokenKind;
    fIdentFuncTable: array[0..206] of TIdentFuncTableFunc;
    fCommentAttri: TSynHighlighterAttributes;
    fIdentifierAttri: TSynHighlighterAttributes;
    fKeyAttri: TSynHighlighterAttributes;
    fNumberAttri: TSynHighlighterAttributes;
    fSpaceAttri: TSynHighlighterAttributes;
    fStringAttri: TSynHighlighterAttributes;
    fSymbolAttri: TSynHighlighterAttributes;
    fVariableAttri: TSynHighlighterAttributes;
    function KeyHash(ToHash: PChar): Integer;
    function KeyComp(const aKey: String): Boolean;
    function Func15: TtkTokenKind;
    function Func18: TtkTokenKind;
    function Func19: TtkTokenKind;
    function Func28: TtkTokenKind;
    function Func31: TtkTokenKind;
    function Func33: TtkTokenKind;
    function Func36: TtkTokenKind;
    function Func37: TtkTokenKind;
    function Func38: TtkTokenKind;
    function Func39: TtkTokenKind;
    function Func40: TtkTokenKind;
    function Func41: TtkTokenKind;
    function Func42: TtkTokenKind;
    function Func43: TtkTokenKind;
    function Func49: TtkTokenKind;
    function Func54: TtkTokenKind;
    function Func55: TtkTokenKind;
    function Func56: TtkTokenKind;
    function Func57: TtkTokenKind;
    function Func58: TtkTokenKind;
    function Func59: TtkTokenKind;
    function Func60: TtkTokenKind;
    function Func62: TtkTokenKind;
    function Func63: TtkTokenKind;
    function Func64: TtkTokenKind;
    function Func68: TtkTokenKind;
    function Func69: TtkTokenKind;
    function Func71: TtkTokenKind;
    function Func72: TtkTokenKind;
    function Func77: TtkTokenKind;
    function Func78: TtkTokenKind;
    function Func79: TtkTokenKind;
    function Func80: TtkTokenKind;
    function Func82: TtkTokenKind;
    function Func87: TtkTokenKind;
    function Func91: TtkTokenKind;
    function Func93: TtkTokenKind;
    function Func96: TtkTokenKind;
    function Func101: TtkTokenKind;
    function Func102: TtkTokenKind;
    function Func105: TtkTokenKind;
    function Func151: TtkTokenKind;
    function Func156: TtkTokenKind;
    function Func164: TtkTokenKind;
    function Func177: TtkTokenKind;
    function Func206: TtkTokenKind;
    procedure AndSymbolProc;
    procedure AtSymbolProc;
    procedure BraceCloseProc;
    procedure BraceOpenProc;
    procedure CRProc;
    procedure ColonProc;
    procedure CommaProc;
    procedure EqualProc;
    procedure GreaterProc;
    procedure IdentProc;
    procedure LFProc;
    procedure LowerProc;
    procedure MinusProc;
    procedure MultiplyProc;
    procedure NotSymbolProc;
    procedure NullProc;
    procedure NumberProc;
    procedure OrSymbolProc;
    procedure PlusProc;
    procedure PointProc;
    procedure PoundProc;
    procedure QuestionProc;
    procedure RemainderSymbolProc;
    procedure RoundCloseProc;
    procedure RoundOpenProc;
    procedure SemiColonProc;
    procedure SlashProc;
    procedure SpaceProc;
    procedure SquareCloseProc;
    procedure SquareOpenProc;
    procedure StringProc;
    procedure VarExpansionProc;
    procedure TildeProc;
    procedure VariableProc;
    procedure XOrSymbolProc;
    procedure UnknownProc;
    function AltFunc: TtkTokenKind;
    procedure InitIdent;
    function IdentKind(MayBe: PChar): TtkTokenKind;
    procedure MakeMethodTables;
    procedure AnsiCProc;
    procedure String39Proc;
    procedure String34Proc;
{$IFDEF SYN_HEREDOC}
    procedure HeredocProc;
{$ENDIF}
  protected
    function GetIdentChars: TSynIdentChars; override;
    function GetSampleSource: string; override;
    function IsFilterStored: Boolean; override;
  public
    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;
  published
    property CommentAttri: TSynHighlighterAttributes read fCommentAttri
      write fCommentAttri;
    property IdentifierAttri: TSynHighlighterAttributes read fIdentifierAttri
      write fIdentifierAttri;
    property KeyAttri: TSynHighlighterAttributes read fKeyAttri write fKeyAttri;
    property NumberAttri: TSynHighlighterAttributes read fNumberAttri
      write fNumberAttri;
    property SpaceAttri: TSynHighlighterAttributes read fSpaceAttri
      write fSpaceAttri;
    property StringAttri: TSynHighlighterAttributes read fStringAttri
      write fStringAttri;
    property SymbolAttri: TSynHighlighterAttributes read fSymbolAttri
      write fSymbolAttri;
    property VariableAttri: TSynHighlighterAttributes read fVariableAttri
      write fVariableAttri;
  end;

implementation

uses
{$IFDEF SYN_CLX}
  QSynEditMiscProcs,
  QSynEditStrConst;
{$ELSE}
  SynEditMiscProcs,
  SynEditStrConst;
{$ENDIF}

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

procedure MakeIdentTable;
var
  I, J: 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;
    J := UpCase(I);
    Case I in ['_', 'A'..'Z', 'a'..'z'] of
      True: mHashTable[I] := Ord(J) - 64
    else mHashTable[I] := 0;
    end;
  end;
end;

procedure TSynPHPSyn.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[18] := Func18;
  fIdentFuncTable[19] := Func19;
  fIdentFuncTable[28] := Func28;
  fIdentFuncTable[31] := Func31;
  fIdentFuncTable[33] := Func33;
  fIdentFuncTable[36] := Func36;
  fIdentFuncTable[37] := Func37;
  fIdentFuncTable[38] := Func38;
  fIdentFuncTable[39] := Func39;
  fIdentFuncTable[40] := Func40;
  fIdentFuncTable[41] := Func41;
  fIdentFuncTable[42] := Func42;
  fIdentFuncTable[43] := Func43;
  fIdentFuncTable[49] := Func49;
  fIdentFuncTable[54] := Func54;
  fIdentFuncTable[55] := Func55;
  fIdentFuncTable[56] := Func56;
  fIdentFuncTable[57] := Func57;
  fIdentFuncTable[58] := Func58;
  fIdentFuncTable[59] := Func59;
  fIdentFuncTable[60] := Func60;
  fIdentFuncTable[62] := Func62;
  fIdentFuncTable[63] := Func63;
  fIdentFuncTable[64] := Func64;
  fIdentFuncTable[68] := Func68;
  fIdentFuncTable[69] := Func69;
  fIdentFuncTable[71] := Func71;
  fIdentFuncTable[72] := Func72;
  fIdentFuncTable[77] := Func77;
  fIdentFuncTable[78] := Func78;
  fIdentFuncTable[79] := Func79;
  fIdentFuncTable[80] := Func80;
  fIdentFuncTable[82] := Func82;
  fIdentFuncTable[87] := Func87;
  fIdentFuncTable[91] := Func91;
  fIdentFuncTable[93] := Func93;
  fIdentFuncTable[96] := Func96;
  fIdentFuncTable[101] := Func101;
  fIdentFuncTable[102] := Func102;
  fIdentFuncTable[105] := Func105;
  fIdentFuncTable[151] := Func151;
  fIdentFuncTable[156] := Func156;
  fIdentFuncTable[164] := Func164;
  fIdentFuncTable[177] := Func177;
  fIdentFuncTable[206] := Func206;
end;

function TSynPHPSyn.KeyHash(ToHash: PChar): Integer;
begin
  Result := 0;
  while ToHash^ in ['_', '0'..'9', 'a'..'z', 'A'..'Z'] do
  begin
    inc(Result, mHashTable[ToHash^]);
    inc(ToHash);
  end;
  fStringLen := ToHash - fToIdent;
end;

function TSynPHPSyn.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 mHashTable[Temp^] <> mHashTable[aKey[i]] then
      begin
        Result := False;
        break;
      end;
      inc(Temp);
    end;
  end else Result := False;
end;

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

function TSynPHPSyn.Func18: TtkTokenKind;
begin
  if KeyComp('die') then Result := tkKey else Result := tkIdentifier;
end;

function TSynPHPSyn.Func19: TtkTokenKind;
begin
  if KeyComp('and') then Result := tkKey else
    if KeyComp('do') then Result := tkKey else Result := tkIdentifier;
end;

function TSynPHPSyn.Func28: TtkTokenKind;
begin
  if KeyComp('case') then Result := tkKey else Result := tkIdentifier;
end;

function TSynPHPSyn.Func31: TtkTokenKind;
begin
  if KeyComp('echo') then Result := tkKey else Result := tkIdentifier;
end;

function TSynPHPSyn.Func33: TtkTokenKind;
begin
  if KeyComp('or') then Result := tkKey else Result := tkIdentifier;
end;

function TSynPHPSyn.Func36: TtkTokenKind;
begin
  if KeyComp('real') then Result := tkKey else Result := tkIdentifier;
end;

function TSynPHPSyn.Func37: TtkTokenKind;
begin
  if KeyComp('break') then Result := tkKey else Result := tkIdentifier;
end;

function TSynPHPSyn.Func38: TtkTokenKind;
begin
  if KeyComp('endif') then Result := tkKey else Result := tkIdentifier;
end;

function TSynPHPSyn.Func39: TtkTokenKind;
begin
  if KeyComp('for') then Result := tkKey else Result := tkIdentifier;
end;

function TSynPHPSyn.Func40: TtkTokenKind;
begin
  if KeyComp('eval') then Result := tkKey else Result := tkIdentifier;
end;

function TSynPHPSyn.Func41: TtkTokenKind;
begin
  if KeyComp('var') then Result := tkKey else
    if KeyComp('else') then Result := tkKey else Result := tkIdentifier;
end;

function TSynPHPSyn.Func42: TtkTokenKind;
begin
  if KeyComp('new') then Result := tkKey else Result := tkIdentifier;
end;

function TSynPHPSyn.Func43: TtkTokenKind;
begin
  if KeyComp('false') then Result := tkKey else
    if KeyComp('int') then Result := tkKey else Result := tkIdentifier;
end;

function TSynPHPSyn.Func49: TtkTokenKind;
begin
  if KeyComp('global') then Result := tkKey else Result := tkIdentifier;
end;

function TSynPHPSyn.Func54: TtkTokenKind;
begin
  if KeyComp('float') then Result := tkKey else
    if KeyComp('class') then Result := tkKey else Result := tkIdentifier;
end;

function TSynPHPSyn.Func55: TtkTokenKind;
begin
  if KeyComp('object') then Result := tkKey else Result := tkIdentifier;
end;

function TSynPHPSyn.Func56: TtkTokenKind;
begin
  if KeyComp('elseif') then Result := tkKey else
    if KeyComp('foreach') then Result := tkKey else Result := tkIdentifier;
end;

function TSynPHPSyn.Func57: TtkTokenKind;
begin
  if KeyComp('while') then Result := tkKey else
    if KeyComp('xor') then Result := tkKey else Result := tkIdentifier;
end;

function TSynPHPSyn.Func58: TtkTokenKind;
begin
  if KeyComp('exit') then Result := tkKey else Result := tkIdentifier;
end;

function TSynPHPSyn.Func59: TtkTokenKind;
begin
  if KeyComp('double') then Result := tkKey else Result := tkIdentifier;
end;

function TSynPHPSyn.Func60: TtkTokenKind;
begin
  if KeyComp('list') then Result := tkKey else Result := tkIdentifier;
end;

function TSynPHPSyn.Func62: TtkTokenKind;
begin
  if KeyComp('endfor') then Result := tkKey else Result := tkIdentifier;
end;

function TSynPHPSyn.Func63: TtkTokenKind;
begin
  if KeyComp('array') then Result := tkKey else Result := tkIdentifier;
end;

function TSynPHPSyn.Func64: TtkTokenKind;
begin
  if KeyComp('true') then Result := tkKey else Result := tkIdentifier;
end;

function TSynPHPSyn.Func68: TtkTokenKind;
begin
  if KeyComp('include') then Result := tkKey else Result := tkIdentifier;
end;

function TSynPHPSyn.Func69: TtkTokenKind;
begin
  if KeyComp('default') then Result := tkKey else Result := tkIdentifier;
end;

function TSynPHPSyn.Func71: TtkTokenKind;
begin
  if KeyComp('const') then Result := tkKey else Result := tkIdentifier;
end;

function TSynPHPSyn.Func72: TtkTokenKind;
begin
  if KeyComp('isset') then Result := tkKey else
    if KeyComp('static') then Result := tkKey else Result := tkIdentifier;
end;

function TSynPHPSyn.Func77: TtkTokenKind;
begin
  if KeyComp('print') then Result := tkKey else Result := tkIdentifier;
end;