Files
HeidiSQL/components/synedit/Source/SynHighlighterSml.pas
2021-03-16 20:12:46 +01:00

677 lines
18 KiB
ObjectPascal

{-------------------------------------------------------------------------------
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: SynHighlighterSML.pas, released 2000-04-17.
The Original Code is based on the dmMLSyn.pas file from the
mwEdit component suite by Martin Waldenburg and other developers, the Initial
Author of this file is David H. Muir.
Unicode translation by Maël Hörz.
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: SynHighlighterSml.pas,v 1.14.2.6 2008/09/14 16:25:03 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 SynEdit with a Standard ML syntax highlighter, with extra options for the standard Basis library.)
@author(David H Muir <dhm@dmsoftware.co.uk>)
@created(1999)
@lastmod(2000-06-23)
The SynHighlighterSML.pas unit provides SynEdit text control with a Standard ML highlighter. Many formatting attributes can
be specified, and there is an option to include extra keywords and operators only found in the Basis library, this option can
be disabled for backwards compatibility with older ML compilers that do not have support for the Basis Library.
}
unit SynHighlighterSml;
{$I SynEdit.inc}
interface
uses
Graphics,
Registry,
SynEditTypes,
SynEditHighlighter,
SynUnicode,
SysUtils,
Classes;
Type
TtkTokenKind = (tkCharacter, tkComment, tkIdentifier, tkKey, tkNull, tkNumber,
tkOperator, tkSpace, tkString, tkSymbol, tkSyntaxError, tkUnknown);
TRangeState = (rsUnknown, rsComment, rsMultilineString);
PIdentFuncTableFunc = ^TIdentFuncTableFunc;
TIdentFuncTableFunc = function (Index: Integer): TtkTokenKind of object;
type
TSynSMLSyn = class(TSynCustomHighlighter)
private
FBasis: Boolean;
FRange: TRangeState;
FTokenID: TtkTokenKind;
FIdentFuncTable: array[0..70] of TIdentFuncTableFunc;
FCharacterAttri: TSynHighlighterAttributes;
FCommentAttri: TSynHighlighterAttributes;
FIdentifierAttri: TSynHighlighterAttributes;
FKeyAttri: TSynHighlighterAttributes;
FNumberAttri: TSynHighlighterAttributes;
FOperatorAttri: TSynHighlighterAttributes;
FSpaceAttri: TSynHighlighterAttributes;
FStringAttri: TSynHighlighterAttributes;
FSymbolAttri: TSynHighlighterAttributes;
FSyntaxErrorAttri: TSynHighlighterAttributes;
function IsValidMLCharacter: Boolean;
function AltFunc(Index: Integer): TtkTokenKind;
function KeyWordFunc(Index: Integer): TtkTokenKind;
function HashKey(Str: PWideChar): Cardinal;
function IdentKind(MayBe: PWideChar): TtkTokenKind;
procedure InitIdent;
procedure CRProc;
procedure CharacterProc;
procedure ColonProc;
procedure CommentProc;
procedure IdentProc;
procedure LFProc;
procedure NullProc;
procedure NumberProc;
procedure OperatorProc;
procedure RoundBracketOpenProc;
procedure SpaceProc;
procedure StringProc;
procedure SymbolProc;
procedure UnknownProc;
procedure BasisOpProc;
procedure StringEndProc;
procedure PoundProc;
protected
function GetSampleSource: UnicodeString; override;
function IsFilterStored: Boolean; override;
public
class function GetLanguageName: string; override;
class function GetFriendlyLanguageName: UnicodeString; override;
function GetRange: Pointer; override;
procedure ResetRange; override;
procedure SetRange(Value: Pointer); override;
public
constructor Create(AOwner: TComponent); override;
function GetDefaultAttribute(Index: Integer): TSynHighlighterAttributes;
override;
function GetEol: Boolean; override;
function GetTokenID: TtkTokenKind;
function GetTokenAttribute: TSynHighlighterAttributes; override;
function GetTokenKind: Integer; override;
function IsIdentChar(AChar: WideChar): Boolean; override;
procedure Next; override;
published
property CharacterAttri: TSynHighlighterAttributes read FCharacterAttri
write FCharacterAttri;
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 OperatorAttri: TSynHighlighterAttributes read FOperatorAttri
write FOperatorAttri;
property SpaceAttri: TSynHighlighterAttributes read FSpaceAttri
write FSpaceAttri;
property StringAttri: TSynHighlighterAttributes read FStringAttri
write FStringAttri;
property SymbolAttri: TSynHighlighterAttributes read FSymbolAttri
write FSymbolAttri;
property SyntaxErrorAttri: TSynHighlighterAttributes read FSyntaxErrorAttri
write FSyntaxErrorAttri;
property Basis: Boolean read FBasis write FBasis default True;
end;
implementation
uses
SynEditStrConst;
const
KeyWords: array[0..40] of UnicodeString = (
'abstype', 'and', 'andalso', 'as', 'case', 'datatype', 'do', 'else', 'end',
'eqtype', 'exception', 'fn', 'fun', 'functor', 'handle', 'if', 'in',
'include', 'infix', 'infixr', 'let', 'local', 'nonfix', 'of', 'op', 'open',
'orelse', 'raise', 'rec', 'sharing', 'sig', 'signature', 'struct',
'structure', 'then', 'type', 'val', 'where', 'while', 'with', 'withtype'
);
KeyIndices: array[0..70] of Integer = (
28, -1, -1, -1, 23, 4, 19, -1, -1, 32, 8, 6, -1, 33, 0, -1, 14, -1, 2, -1,
-1, 29, 35, -1, -1, -1, -1, 13, -1, -1, 9, -1, 11, 30, 1, -1, 25, 36, -1,
-1, -1, 40, -1, 7, -1, 16, 26, 37, -1, 15, 21, -1, 18, 12, 5, -1, -1, 10,
22, 27, 34, 17, -1, 20, -1, 39, -1, 3, 38, 31, 24
);
{$Q-}
function TSynSMLSyn.HashKey(Str: PWideChar): Cardinal;
begin
Result := 0;
while IsIdentChar(Str^) do
begin
Result := Result * 157 + Ord(Str^) * 35;
Inc(Str);
end;
Result := Result mod 71;
FStringLen := Str - FToIdent;
end;
{$Q+}
function TSynSMLSyn.IdentKind(MayBe: PWideChar): TtkTokenKind;
var
Key: Cardinal;
begin
FToIdent := MayBe;
Key := HashKey(MayBe);
if Key <= High(FIdentFuncTable) then
Result := FIdentFuncTable[Key](KeyIndices[Key])
else
Result := tkIdentifier;
end;
procedure TSynSMLSyn.InitIdent;
var
i: Integer;
begin
for i := Low(FIdentFuncTable) to High(FIdentFuncTable) do
if KeyIndices[i] = -1 then
FIdentFuncTable[i] := AltFunc;
for i := Low(FIdentFuncTable) to High(FIdentFuncTable) do
if @FIdentFuncTable[i] = nil then
FIdentFuncTable[i] := KeyWordFunc;
end;
function TSynSMLSyn.IsValidMLCharacter: Boolean;
function IsABNRTChar(Run: Integer): Boolean;
begin
case FLine[Run] of
'a', 'b', 'n', 'r', 't':
Result := True;
else
Result := False;
end;
end;
var
ASCIIStr: UnicodeString;
ASCIICode, Error: Integer;
begin
Result := False;
if (FLine[Run] = '"') then
if (Run > 2) and (FLine[Run - 1] <> '\') and (FLine[Run - 2] = '"') then
Result := True
else if (Run > 3) and (FLine[Run - 1] = '\') and (FLine[Run - 2] = '\')
and (FLine[Run - 3] = '"') then
Result := True
else if (Run > 3) and IsABNRTChar(Run - 1) and
(FLine[Run - 2] = '\') and (FLine[Run - 3] = '"') then
Result := True
else if (Run > 5) and (FLine[Run - 4] = '\') and (FLine[Run - 5] = '"') then
begin
ASCIIStr := copy(FLine, Run - 2, 3);
Val(ASCIIStr, ASCIICode, Error);
if (Error = 0) and (ASCIICode >= 0) and (ASCIICode <= 255) then
Result := True
end
end;
function TSynSMLSyn.AltFunc(Index: Integer): TtkTokenKind;
begin
Result := tkIdentifier;
end;
function TSynSMLSyn.KeyWordFunc(Index: Integer): TtkTokenKind;
begin
if IsCurrentToken(KeyWords[Index]) then
Result := tkKey
else
Result := tkIdentifier
end;
constructor TSynSMLSyn.Create(AOwner: TComponent);
begin
inherited Create(AOwner);
FCaseSensitive := True;
FCharacterAttri := TSynHighlighterAttributes.Create(SYNS_AttrCharacter, SYNS_FriendlyAttrCharacter);
FCharacterAttri.Foreground := clBlue;
AddAttribute(FCharacterAttri);
FCommentAttri := TSynHighlighterAttributes.Create(SYNS_AttrComment, SYNS_FriendlyAttrComment);
FCommentAttri.Style := [fsItalic];
FCommentAttri.Foreground := clNavy;
AddAttribute(FCommentAttri);
FIdentifierAttri := TSynHighlighterAttributes.Create(SYNS_AttrIdentifier, SYNS_FriendlyAttrIdentifier);
AddAttribute(FIdentifierAttri);
FKeyAttri := TSynHighlighterAttributes.Create(SYNS_AttrReservedWord, SYNS_FriendlyAttrReservedWord);
FKeyAttri.Style := [fsBold];
FKeyAttri.Foreground := clGreen;
AddAttribute(FKeyAttri);
FNumberAttri := TSynHighlighterAttributes.Create(SYNS_AttrNumber, SYNS_FriendlyAttrNumber);
FNumberAttri.Foreground := clRed;
AddAttribute(FNumberAttri);
FOperatorAttri := TSynHighlighterAttributes.Create(SYNS_AttrOperator, SYNS_FriendlyAttrOperator);
FOperatorAttri.Foreground := clMaroon;
AddAttribute(FOperatorAttri);
FSpaceAttri := TSynHighlighterAttributes.Create(SYNS_AttrSpace, SYNS_FriendlyAttrSpace);
AddAttribute(FSpaceAttri);
FStringAttri := TSynHighlighterAttributes.Create(SYNS_AttrString, SYNS_FriendlyAttrString);
FStringAttri.Foreground := clBlue;
AddAttribute(FStringAttri);
FSymbolAttri := TSynHighlighterAttributes.Create(SYNS_AttrSymbol, SYNS_FriendlyAttrSymbol);
AddAttribute(FSymbolAttri);
FSyntaxErrorAttri := TSynHighlighterAttributes.Create(SYNS_AttrSyntaxError, SYNS_FriendlyAttrSyntaxError);
FSyntaxErrorAttri.Foreground := clRed;
FSyntaxErrorAttri.Style := [fsBold];
AddAttribute(FSyntaxErrorAttri);
SetAttributesOnChange(DefHighlightChange);
InitIdent;
FDefaultFilter := SYNS_FilterSML;
Basis := True;
end;
procedure TSynSMLSyn.CRProc;
begin
FTokenID := tkSpace;
case FLine[Run + 1] of
#10: Inc(Run, 2);
else
Inc(Run);
end;
end;
procedure TSynSMLSyn.ColonProc;
begin
Inc(Run);
if Basis and (FLine[Run] = ':') then
begin
FTokenID := tkOperator;
Inc(Run);
end
else FTokenID := tkSymbol;
end;
procedure TSynSMLSyn.IdentProc;
begin
FTokenID := IdentKind((FLine + Run));
Inc(Run, FStringLen);
while IsIdentChar(FLine[Run]) do Inc(Run);
end;
procedure TSynSMLSyn.LFProc;
begin
FTokenID := tkSpace;
Inc(Run);
end;
procedure TSynSMLSyn.NullProc;
begin
FTokenID := tkNull;
Inc(Run);
end;
procedure TSynSMLSyn.NumberProc;
function IsNumberChar: Boolean;
begin
case FLine[Run] of
'0'..'9', '.', 'u', 'U', 'l', 'L', 'x', 'X', 'e', 'E', 'f', 'F':
Result := True;
else
Result := False;
end;
end;
begin
Inc(Run);
FTokenID := tkNumber;
while IsNumberChar do
begin
case FLine[Run] of
'.': if FLine[Run + 1] = '.' then
Break;
end;
Inc(Run);
end;
end;
procedure TSynSMLSyn.OperatorProc;
begin
Inc(Run);
FTokenID := tkOperator;
end;
procedure TSynSMLSyn.SpaceProc;
begin
Inc(Run);
FTokenID := tkSpace;
while (FLine[Run] <= #32) and not IsLineEnd(Run) do Inc(Run);
end;
procedure TSynSMLSyn.StringProc;
begin
FTokenID := tkString;
repeat
if FLine[Run] = '\' then
begin
case FLine[Run + 1] of
'"', '\':
Inc(Run);
#00:
begin
Inc(Run);
FRange := rsMultilineString;
Exit;
end;
end;
end;
Inc(Run);
until IsLineEnd(Run) or (FLine[Run] = '"');
if FLine[Run] = '"' then
Inc(Run);
end;
procedure TSynSMLSyn.StringEndProc;
begin
FTokenID := tkString;
case FLine[Run] of
#0:
begin
NullProc;
Exit;
end;
#10:
begin
LFProc;
Exit;
end;
#13:
begin
CRProc;
Exit;
end;
end;
FRange := rsUnknown;
repeat
case FLine[Run] of
#0, #10, #13: Break;
'\':
begin
case FLine[Run + 1] of
'"', '\':
Inc(Run);
#00:
begin
Inc(Run);
FRange := rsMultilineString;
Exit;
end;
end;
end;
'"': Break;
end;
Inc(Run);
until IsLineEnd(Run) or (FLine[Run] = '"');
if FLine[Run] = '"' then
Inc(Run);
end;
procedure TSynSMLSyn.SymbolProc;
begin
Inc(Run);
FTokenID := tkSymbol;
end;
procedure TSynSMLSyn.UnknownProc;
begin
Inc(Run);
FTokenID := tkUnknown;
end;
procedure TSynSMLSyn.BasisOpProc;
begin
Inc(Run);
if Basis then FTokenID := tkOperator else FTokenID := tkIdentifier;
end;
procedure TSynSMLSyn.PoundProc;
begin
Inc(Run);
if (FLine[Run] = '"') then
CharacterProc
else
FTokenID := tkIdentifier;
end;
procedure TSynSMLSyn.CharacterProc;
begin
case FLine[Run] of
#0: NullProc;
#10: LFProc;
#13: CRProc;
else
begin
repeat
Inc(Run);
until IsLineEnd(Run) or (FLine[Run] = '"');
if IsValidMLCharacter then
FTokenID := tkCharacter
else
begin
if FLine[Run] = '"' then Inc(Run);
FTokenID := tkSyntaxError;
end;
end
end
end;
procedure TSynSMLSyn.RoundBracketOpenProc;
begin
Inc(Run);
if (FLine[Run] = '*') then
begin
FRange := rsComment;
CommentProc;
FTokenID := tkComment;
end
else
FTokenID := tkIdentifier;
end;
procedure TSynSMLSyn.CommentProc;
begin
case FLine[Run] of
#0: NullProc;
#10: LFProc;
#13: CRProc;
else
begin
FTokenID := tkComment;
repeat
if (FLine[Run] = '*') and
(FLine[Run + 1] = ')') then
begin
Inc(Run, 2);
FRange := rsUnknown;
Break;
end;
if not IsLineEnd(Run) then
Inc(Run);
until IsLineEnd(Run);
end;
end;
end;
procedure TSynSMLSyn.Next;
begin
FTokenPos := Run;
case FRange of
rsComment: CommentProc;
rsMultilineString: StringEndProc;
else
begin
FRange := rsUnknown;
case FLine[Run] of
#13: CRProc;
'#': PoundProc;
':': ColonProc;
'A'..'Z', 'a'..'z', '_': IdentProc;
#10: LFProc;
#0: NullProc;
'0'..'9': NumberProc;
#1..#9, #11, #12, #14..#32: SpaceProc;
'"': StringProc;
'@', '^': BasisOpProc;
'(': RoundBracketOpenProc;
'+', '-', '~', '*', '/', '=', '<', '>': OperatorProc;
',', '.', ';': SymbolProc;
else UnknownProc;
end;
end;
end;
inherited;
end;
function TSynSMLSyn.GetDefaultAttribute(Index: Integer): TSynHighlighterAttributes;
begin
case Index of
SYN_ATTR_COMMENT: Result := FCommentAttri;
SYN_ATTR_IDENTIFIER: Result := FIdentifierAttri;
SYN_ATTR_KEYWORD: Result := FKeyAttri;
SYN_ATTR_STRING: Result := FStringAttri;
SYN_ATTR_WHITESPACE: Result := FSpaceAttri;
SYN_ATTR_SYMBOL: Result := FSymbolAttri;
else
Result := nil;
end;
end;
function TSynSMLSyn.GetEol: Boolean;
begin
Result := Run = FLineLen + 1;
end;
function TSynSMLSyn.GetTokenID: TtkTokenKind;
begin
Result := FTokenID;
end;
function TSynSMLSyn.GetTokenAttribute: TSynHighlighterAttributes;
begin
case GetTokenID of
tkCharacter: Result := FCharacterAttri;
tkComment: Result := FCommentAttri;
tkIdentifier: Result := FIdentifierAttri;
tkKey: Result := FKeyAttri;
tkNumber: Result := FNumberAttri;
tkOperator: Result := FOperatorAttri;
tkSpace: Result := FSpaceAttri;
tkString: Result := FStringAttri;
tkSymbol: Result := FSymbolAttri;
tkSyntaxError: Result := FSyntaxErrorAttri;
tkUnknown: Result := FIdentifierAttri;
else Result := nil;
end;
end;
function TSynSMLSyn.GetTokenKind: Integer;
begin
Result := Ord(FTokenID);
end;
function TSynSMLSyn.IsFilterStored: Boolean;
begin
Result := FDefaultFilter <> SYNS_FilterSML;
end;
function TSynSMLSyn.IsIdentChar(AChar: WideChar): Boolean;
begin
case AChar of
#39, '_', '0'..'9', 'a'..'z', 'A'..'Z':
Result := True;
else
Result := False;
end;
end;
class function TSynSMLSyn.GetLanguageName: string;
begin
Result := SYNS_LangSML;
end;
function TSynSMLSyn.GetSampleSource: UnicodeString;
begin
Result := '(* Syntax highlighting *)'#13#10 +
'load "Real";'#13#10 +
'fun PrintNumber(x: int) ='#13#10 +
' let'#13#10 +
' val Number = real(x) / 10.0;'#13#10 +
' val Text = "The Number is " ^ Real.toString(~Number) ^ "\n";'#13#10 +
' in'#13#10 +
' print Text;'#13#10 +
' if x = 0 then () else PrintNumber(x-1)'#13#10+
' end;'
end;
procedure TSynSMLSyn.ResetRange;
begin
FRange := rsUnknown;
end;
procedure TSynSMLSyn.SetRange(Value: Pointer);
begin
FRange := TRangeState(Value);
end;
function TSynSMLSyn.GetRange: Pointer;
begin
Result := Pointer(FRange);
end;
class function TSynSMLSyn.GetFriendlyLanguageName: UnicodeString;
begin
Result := SYNS_FriendlyLangSML;
end;
initialization
{$IFNDEF SYN_CPPB_1}
RegisterPlaceableHighlighter(TSynSMLSyn);
{$ENDIF}
end.