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SynHighlighterPython.pas
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SynHighlighterPython.pas
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{-------------------------------------------------------------------------------
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: SynHighlighterPython.pas, released 2000-06-23.
The Original Code is based on the odPySyn.pas file from the
mwEdit component suite by Martin Waldenburg and other developers, the Initial
Author of this file is Olivier Deckmyn.
Portions created by M.Utku Karatas and Dennis Chuah.
Unicode translation by Maλl Hφrz.
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: SynHighlighterPython.pas,v 1.18.2.5 2005/11/27 22:22:45 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(A Python language highlighter for SynEdit)
@author(Olivier Deckmyn, converted to SynEdit by David Muir <[email protected]>)
@created(unknown, converted to SynEdit on 2000-06-23)
@lastmod(2003-02-13)
The SynHighlighterPython implements a highlighter for Python for the SynEdit projects.
}
unit SynHighlighterPython;
{$I SynEdit.inc}
interface
uses
Graphics,
SynEditHighlighter,
SysUtils,
Classes, SynRegExpr;
type
TtkTokenKind = (tkComment, tkIdentifier, tkKey, tkNull, tkNumber, tkSpace,
tkString, tkSymbol, tkNonKeyword, tkCodeComment, tkTrippleQuotedString,
tkTrippleQuotedString2, tkFunctionName, tkClassName, tkSystemDefined, tkHex,
tkOct, tkFloat, tkUnknown, tkBanner, tkOutput, tkTraceback,
tkPrompt); // used in the interpreter
TRangeState = (rsANil, rsComment, rsUnKnown, rsMultilineString, rsMultilineString2,
rsMultilineString3, //this is to indicate if a string is made multiline by backslash char at line end (as in C++ highlighter)
rsTraceback // used in the interpreter
);
type
TSynPythonSyn = class(TSynCustomHighLighter)
private
fStringStarter: WideChar; // used only for rsMultilineString3 stuff
fRange: TRangeState;
FTokenID: TtkTokenKind;
FKeywords: TStringList;
fLastIdentifier : UnicodeString;
fStringAttri: TSynHighlighterAttributes;
fDocStringAttri: TSynHighlighterAttributes;
fMultiLineStringAttri: TSynHighlighterAttributes;
fNumberAttri: TSynHighlighterAttributes;
fHexAttri: TSynHighlighterAttributes;
fOctalAttri: TSynHighlighterAttributes;
fFloatAttri: TSynHighlighterAttributes;
fKeyAttri: TSynHighlighterAttributes;
fNonKeyAttri: TSynHighlighterAttributes;
fSystemAttri: TSynHighlighterAttributes;
fSymbolAttri: TSynHighlighterAttributes;
fCommentAttri: TSynHighlighterAttributes;
fCodeCommentAttri: TSynHighlighterAttributes;
fFunctionNameAttri: TSynHighlighterAttributes;
fClassNameAttri: TSynHighlighterAttributes;
fIdentifierAttri: TSynHighlighterAttributes;
fSpaceAttri: TSynHighlighterAttributes;
fErrorAttri: TSynHighlighterAttributes;
fMatchingBraceAttri : TSynHighlighterAttributes;
fUnbalancedBraceAttri : TSynHighlighterAttributes;
fTempSpaceAttri: TSynHighlighterAttributes;
function IdentKind(MayBe: PWideChar): TtkTokenKind;
procedure SymbolProc;
procedure CRProc;
procedure CommentProc;
procedure GreaterProc;
procedure IdentProc;
procedure LFProc;
procedure LowerProc;
procedure NullProc;
procedure NumberProc;
procedure SpaceProc;
procedure PreStringProc;
procedure BUStringProc;
procedure StringProc;
procedure String2Proc;
procedure StringEndProc(EndChar: WideChar);
procedure UnknownProc;
protected
function GetSampleSource: UnicodeString; override;
function IsFilterStored: Boolean; override;
procedure GetKeywordIdentifiers(KeywordList: TStrings); virtual;
property TokenID: TtkTokenKind read FTokenID;
procedure DispatchProc; virtual;
public
function IsIdentChar(AChar: WideChar): Boolean; override;
property Keywords: TStringList read FKeywords;
class function GetLanguageName: string; override;
class function GetFriendlyLanguageName: UnicodeString; override;
public
constructor Create(AOwner: TComponent); override;
destructor Destroy; override;
function GetDefaultAttribute(Index: integer): TSynHighlighterAttributes;
override;
function GetEol: Boolean; override;
function GetRange: Pointer; override;
function GetTokenID: TtkTokenKind;
function GetTokenAttribute: TSynHighlighterAttributes; override;
function GetTokenKind: integer; override;
procedure Next; override;
procedure SetRange(Value: Pointer); override;
procedure ResetRange; override;
function GetKeyWords(TokenKind: Integer): UnicodeString; override;
published
property CommentAttri: TSynHighlighterAttributes read fCommentAttri
write fCommentAttri;
property CodeCommentAttri: TSynHighlighterAttributes read fCodeCommentAttri
write fCodeCommentAttri;
property FunctionNameAttri: TSynHighlighterAttributes read fFunctionNameAttri
write fFunctionNameAttri;
property ClassNameAttri: TSynHighlighterAttributes read fClassNameAttri
write fClassNameAttri;
property IdentifierAttri: TSynHighlighterAttributes read fIdentifierAttri
write fIdentifierAttri;
property KeyAttri: TSynHighlighterAttributes read fKeyAttri write fKeyAttri;
property NonKeyAttri: TSynHighlighterAttributes read fNonKeyAttri
write fNonKeyAttri;
property SystemAttri: TSynHighlighterAttributes read fSystemAttri
write fSystemAttri;
property NumberAttri: TSynHighlighterAttributes read fNumberAttri
write fNumberAttri;
property HexAttri: TSynHighlighterAttributes read fHexAttri
write fHexAttri;
property OctalAttri: TSynHighlighterAttributes read fOctalAttri
write fOctalAttri;
property FloatAttri: TSynHighlighterAttributes read fFloatAttri
write fFloatAttri;
property SpaceAttri: TSynHighlighterAttributes read fSpaceAttri
write fSpaceAttri;
property StringAttri: TSynHighlighterAttributes read fStringAttri
write fStringAttri;
property DocStringAttri: TSynHighlighterAttributes read fDocStringAttri
write fDocStringAttri;
property MultiLineStringAttri: TSynHighlighterAttributes read fMultiLineStringAttri
write fMultiLineStringAttri;
property SymbolAttri: TSynHighlighterAttributes read fSymbolAttri
write fSymbolAttri;
property ErrorAttri: TSynHighlighterAttributes read fErrorAttri
write fErrorAttri;
property MatchingBraceAttri : TSynHighlighterAttributes read fMatchingBraceAttri
write fMatchingBraceAttri;
property UnbalancedBraceAttri : TSynHighlighterAttributes read fUnbalancedBraceAttri
write fUnbalancedBraceAttri;
end;
TSynPythonInterpreterSyn = class(TSynPythonSyn)
private
fPS1 : string;
fPS2 : string;
fDbg : string;
fPM : string;
fBannerAttri: TSynHighlighterAttributes;
fOutputAttri: TSynHighlighterAttributes;
fTracebackAttri: TSynHighlighterAttributes;
fPromptAttri: TSynHighlighterAttributes;
fTracebackStartRE : TRegExpr;
fTracebackEndRE : TRegExpr;
procedure BannerProc;
procedure OutputProc;
procedure TracebackProc;
procedure PromptProc(Len : integer);
protected
procedure DispatchProc; override;
function GetSampleSource: UnicodeString; override;
public
class function GetLanguageName: string; override;
class function GetFriendlyLanguageName: UnicodeString; override;
public
constructor Create(AOwner: TComponent); override;
destructor Destroy; override;
function GetTokenAttribute: TSynHighlighterAttributes; override;
published
property BannerAttri: TSynHighlighterAttributes read fBannerAttri
write fBannerAttri;
property OutputAttri: TSynHighlighterAttributes read fOutputAttri
write fOutputAttri;
property TracebackAttri: TSynHighlighterAttributes read fTracebackAttri
write fTracebackAttri;
property PromptAttri: TSynHighlighterAttributes read fPromptAttri
write fPromptAttri;
property PS1 : string read fPS1 write fPS1;
property PS2 : string read fPS2 write fPS2;
property Dbg : string read fDbg write fDbg;
property PM : string read fPM write fPM;
end;
TSynCythonSyn = class(TSynPythonSyn)
protected
procedure GetKeywordIdentifiers(KeywordList: TStrings); override;
public
constructor Create(AOwner: TComponent); override;
procedure AddCythonKeywords(KeywordList: TStrings);
class function GetLanguageName: string; override;
class function GetFriendlyLanguageName: UnicodeString; override;
end;
Const
SYNS_CommentedCode = 'Commented Code';
SYNS_FunctionName = 'Function Name';
SYNS_ClassName = 'Class Name';
SYNS_MatchingBrace = 'Matching Brace';
SYNS_UnbalancedBrace = 'Unbalanced Brace';
SYNS_MultiLineString = 'Multi-Line String';
resourcestring
SYNS_FriendlyCommentedCode = 'Commented Code';
SYNS_FriendlyFunctionName = 'Function Name';
SYNS_FriendlyClassName = 'Class Name';
SYNS_FriendlyMatchingBrace = 'Matching Brace';
SYNS_FriendlyUnbalancedBrace = 'Unbalanced Brace';
SYNS_FriendlyMultiLineString = 'Multi-Line String';
SYNS_FilterCython = 'Cython Files (*.pyx*.pxd;*.pxi)|*.pyx;*.pxd;*.pxi';
implementation
uses
StrUtils,
SynEditStrConst;
function TSynPythonSyn.GetKeyWords(TokenKind: Integer): UnicodeString;
begin
Result := Keywords.CommaText;
end;
procedure TSynPythonSyn.GetKeywordIdentifiers(KeywordList: TStrings);
const
// No need to localise keywords!
// List of keywords
KEYWORDCOUNT = 31;
KEYWORDS: array [1..KEYWORDCOUNT] of UnicodeString =
(
'and',
'as',
'assert',
'break',
'class',
'continue',
'def',
'del',
'elif',
'else',
'except',
'exec',
'finally',
'for',
'from',
'global',
'if',
'import',
'in',
'is',
'lambda',
'not',
'or',
'pass',
'print',
'raise',
'return',
'try',
'with',
'while',
'yield'
);
// List of non-keyword identifiers
NONKEYWORDCOUNT = 137;
NONKEYWORDS: array [1..NONKEYWORDCOUNT] of UnicodeString =
(
'ArithmeticError',
'AssertionError',
'AttributeError',
'BaseException',
'DeprecationWarning',
'EOFError',
'Ellipsis',
'EnvironmentError',
'Exception',
'False',
'FloatingPointError',
'FutureWarning',
'GeneratorExit',
'IOError',
'ImportError',
'ImportWarning',
'IndentationError',
'IndexError',
'KeyError',
'KeyboardInterrupt',
'LookupError',
'MemoryError',
'NameError',
'None',
'NotImplemented',
'NotImplementedError',
'OSError',
'OverflowError',
'PendingDeprecationWarning',
'ReferenceError',
'RuntimeError',
'RuntimeWarning',
'StandardError',
'StopIteration',
'SyntaxError',
'SyntaxWarning',
'SystemError',
'SystemExit',
'TabError',
'True',
'TypeError',
'UnboundLocalError',
'UnicodeDecodeError',
'UnicodeEncodeError',
'UnicodeError',
'UnicodeTranslateError',
'UnicodeWarning',
'UserWarning',
'ValueError',
'Warning',
'WindowsError',
'ZeroDivisionError',
'_',
'__debug__',
'__doc__',
'__future__',
'__import__',
'__name__',
'abs',
'all',
'any',
'apply',
'basestring',
'bool',
'buffer',
'callable',
'chr',
'classmethod',
'cmp',
'coerce',
'compile',
'complex',
'copyright',
'credits',
'delattr',
'dict',
'dir',
'divmod',
'enumerate',
'eval',
'execfile',
'exit',
'file',
'filter',
'float',
'frozenset',
'getattr',
'globals',
'hasattr',
'hash',
'help',
'hex',
'id',
'input',
'int',
'intern',
'isinstance',
'issubclass',
'iter',
'len',
'license',
'list',
'locals',
'long',
'map',
'max',
'min',
'object',
'oct',
'open',
'ord',
'pow',
'property',
'quit',
'range',
'raw_input',
'reduce',
'reload',
'repr',
'reversed',
'round',
'self',
'set',
'setattr',
'slice',
'sorted',
'staticmethod',
'str',
'sum',
'super',
'tuple',
'type',
'unichr',
'unicode',
'vars',
'xrange',
'zip'
);
var
f: Integer;
begin
for f := 1 to KEYWORDCOUNT do
KeywordList.AddObject(KEYWORDS[f], Pointer(Ord(tkKey)));
for f := 1 to NONKEYWORDCOUNT do
KeywordList.AddObject(NONKEYWORDS[f], Pointer(Ord(tkNonKeyword)));
end;
function TSynPythonSyn.IdentKind(MayBe: PWideChar): TtkTokenKind;
var
i: Integer;
temp: PWideChar;
s: UnicodeString;
begin
// Extract the identifier out - it is assumed to terminate in a
// non-alphanumeric character
fToIdent := MayBe;
temp := MayBe;
while IsIdentChar(temp^) do
Inc(temp);
fStringLen := temp - fToIdent;
SetString(s, fToIdent, fStringLen);
// Check to see if it is a keyword
if ((Run <= 0) or (FLine[Run-1]<> '.')) and (fLastIdentifier <> 'class') and
(fLastIdentifier <> 'def') and FKeywords.Find(s, i) then
begin
// // TStringList is not case sensitive! KV Not now using Delphi's WideStringList
// if s <> FKeywords[i] then
// i := -1;
end
else
i := -1;
if i <> -1 then
Result := TtkTokenKind(FKeywords.Objects[i])
// Check if it is a class name
else if fLastIdentifier = 'class' then
Result := tkClassName
// Check if it is a function name
else if fLastIdentifier = 'def' then
Result := tkFunctionName
// Check if it is a system identifier (__*__)
else if (fStringLen >= 5) and
(MayBe[0] = '_') and (MayBe[1] = '_') and (MayBe[2] <> '_') and
(MayBe[fStringLen - 1] = '_') and (MayBe[fStringLen - 2] = '_') and
(MayBe[fStringLen - 3] <> '_') then
Result := tkSystemDefined
// Else, hey, it is an ordinary run-of-the-mill identifier!
else
Result := tkIdentifier;
//fLastIdentifier := s;
SetString(fLastIdentifier, fToIdent, fStringLen);
end;
constructor TSynPythonSyn.Create(AOwner: TComponent);
begin
inherited Create(AOwner);
fCaseSensitive := True;
FKeywords := TStringList.Create;
GetKeywordIdentifiers(FKeywords);
FKeywords.CaseSensitive := True;
FKeywords.Duplicates := dupIgnore;
FKeywords.Sorted := True;
fRange := rsUnknown;
fCommentAttri := TSynHighlighterAttributes.Create(SYNS_AttrComment, SYNS_FriendlyAttrComment);
fCommentAttri.Foreground := clGray;
fCommentAttri.Style := [fsItalic];
AddAttribute(fCommentAttri);
fCodeCommentAttri := TSynHighlighterAttributes.Create(SYNS_CommentedCode, SYNS_FriendlyCommentedCode);
fCodeCommentAttri.Foreground := clSilver;
fCodeCommentAttri.Style := [fsItalic];
AddAttribute(fCodeCommentAttri);
fFunctionNameAttri := TSynHighlighterAttributes.Create(SYNS_FunctionName, SYNS_FriendlyFunctionName);
fFunctionNameAttri.Foreground := clTeal;
fFunctionNameAttri.Style := [fsBold];
AddAttribute(fFunctionNameAttri);
fClassNameAttri := TSynHighlighterAttributes.Create(SYNS_ClassName, SYNS_FriendlyClassName);
fClassNameAttri.Foreground := clHotlight;
fClassNameAttri.Style := [fsBold];
AddAttribute(fClassNameAttri);
fIdentifierAttri := TSynHighlighterAttributes.Create(SYNS_AttrIdentifier, SYNS_FriendlyAttrIdentifier);
AddAttribute(fIdentifierAttri);
fKeyAttri := TSynHighlighterAttributes.Create(SYNS_AttrReservedWord, SYNS_FriendlyAttrReservedWord);
fKeyAttri.Style := [fsBold];
AddAttribute(fKeyAttri);
fNonKeyAttri := TSynHighlighterAttributes.Create (SYNS_AttrNonReservedKeyword, SYNS_FriendlyAttrNonReservedKeyword);
fNonKeyAttri.Foreground := clNavy;
fNonKeyAttri.Style := [fsBold];
AddAttribute (fNonKeyAttri);
fSystemAttri := TSynHighlighterAttributes.Create (SYNS_AttrSystem, SYNS_FriendlyAttrSystem);
fSystemAttri.Style := [fsBold];
AddAttribute (fSystemAttri);
fNumberAttri := TSynHighlighterAttributes.Create(SYNS_AttrNumber, SYNS_FriendlyAttrNumber);
fNumberAttri.Foreground := clHotlight;
AddAttribute(fNumberAttri);
fHexAttri := TSynHighlighterAttributes.Create(SYNS_AttrHexadecimal, SYNS_FriendlyAttrHexadecimal);
fHexAttri.Foreground := clHotlight;
AddAttribute(fHexAttri);
fOctalAttri := TSynHighlighterAttributes.Create(SYNS_AttrOctal, SYNS_FriendlyAttrOctal);
fOctalAttri.Foreground := clHotlight;
AddAttribute(fOctalAttri);
fFloatAttri := TSynHighlighterAttributes.Create(SYNS_AttrFloat, SYNS_FriendlyAttrFloat);
fFloatAttri.Foreground := clHotlight;
AddAttribute(fFloatAttri);
fSpaceAttri := TSynHighlighterAttributes.Create(SYNS_AttrSpace, SYNS_FriendlyAttrSpace);
fSpaceAttri.Background := clWindow;
AddAttribute(fSpaceAttri);
fStringAttri := TSynHighlighterAttributes.Create(SYNS_AttrString, SYNS_FriendlyAttrString);
fStringAttri.Foreground := clHotlight;
AddAttribute(fStringAttri);
fDocStringAttri := TSynHighlighterAttributes.Create(SYNS_AttrDocumentation, SYNS_FriendlyAttrDocumentation);
fDocStringAttri.Foreground := $FF00CC;
AddAttribute(fDocStringAttri);
fMultiLineStringAttri := TSynHighlighterAttributes.Create(SYNS_MultiLineString, SYNS_FriendlyMultiLineString);
fMultiLineStringAttri.Foreground := clOlive;
AddAttribute(fMultiLineStringAttri);
fSymbolAttri := TSynHighlighterAttributes.Create(SYNS_AttrSymbol, SYNS_FriendlyAttrSymbol);
AddAttribute(fSymbolAttri);
fErrorAttri := TSynHighlighterAttributes.Create(SYNS_AttrSyntaxError, SYNS_FriendlyAttrSyntaxError);
fErrorAttri.Foreground := clRed;
AddAttribute(fErrorAttri);
fMatchingBraceAttri := TSynHighlighterAttributes.Create(SYNS_MatchingBrace, SYNS_FriendlyMatchingBrace);
fMatchingBraceAttri.Foreground := clHotlight;
fMatchingBraceAttri.Background := clAqua;
AddAttribute(fMatchingBraceAttri);
fUnbalancedBraceAttri := TSynHighlighterAttributes.Create(SYNS_UnbalancedBrace, SYNS_FriendlyUnbalancedBrace);
fUnbalancedBraceAttri.Background := clRed;
fUnbalancedBraceAttri.Foreground := clHotlight;
AddAttribute(fUnbalancedBraceAttri);
SetAttributesOnChange(DefHighlightChange);
fDefaultFilter := SYNS_FilterPython;
// for coloring doc comment background
fTempSpaceAttri := TSynHighlighterAttributes.Create(SYNS_AttrSpace, SYNS_FriendlyAttrSpace);
end; { Create }
destructor TSynPythonSyn.Destroy;
begin
FKeywords.Free;
fTempSpaceAttri.Free;
inherited;
end;
procedure TSynPythonSyn.SymbolProc;
begin
inc(Run);
fTokenID := tkSymbol;
end;
procedure TSynPythonSyn.CRProc;
begin
fTokenID := tkSpace;
case FLine[Run + 1] of
#10: inc(Run, 2);
else
inc(Run);
end;
end;
procedure TSynPythonSyn.CommentProc;
begin
inc(Run);
if FLine[Run] = '#' then
fTokenID := tkCodeComment
else
fTokenID := tkComment;
while not IsLineEnd(Run) do
inc(Run);
end;
procedure TSynPythonSyn.GreaterProc;
begin
case FLine[Run + 1] of
'=': begin
inc(Run, 2);
fTokenID := tkSymbol;
end;
else begin
inc(Run);
fTokenID := tkSymbol;
end;
end;
end;
procedure TSynPythonSyn.IdentProc;
begin
fTokenID := IdentKind((fLine + Run));
inc(Run, fStringLen);
end;
procedure TSynPythonSyn.LFProc;
begin
fTokenID := tkSpace;
inc(Run);
end;
procedure TSynPythonSyn.LowerProc;
begin
case FLine[Run + 1] of
'=': begin
inc(Run, 2);
fTokenID := tkSymbol;
end;
'>': begin
inc(Run, 2);
fTokenID := tkSymbol;
end
else begin
inc(Run);
fTokenID := tkSymbol;
end;
end;
end;
procedure TSynPythonSyn.NullProc;
begin
fTokenID := tkNull;
inc(Run);
end;
procedure TSynPythonSyn.NumberProc;
const
INTCHARS = [WideChar('0')..WideChar('9')];
HEXCHARS = [WideChar('a') .. WideChar('f'), WideChar('A') .. WideChar('F')] + INTCHARS;
OCTCHARS = [WideChar('0')..WideChar('7')];
HEXINDICATOR = [WideChar('x'), WideChar('X')];
LONGINDICATOR = [WideChar('l'), WideChar('L')];
IMAGINARYINDICATOR = [WideChar('j'), WideChar('J')];
EXPONENTINDICATOR = [WideChar('e'), WideChar('E')];
EXPONENTSIGN = [WideChar('+'), WideChar('-')];
DOT = WideChar('.');
ZERO = WideChar('0');
type
TNumberState =
(
nsStart,
nsDotFound,
nsFloatNeeded,
nsHex,
nsOct,
nsExpFound
);
var
temp: WideChar;
State: TNumberState;
function CheckSpecialCases: Boolean;
begin
case temp of
// Look for dot (.)
DOT: begin
// .45
if CharInSet(FLine[Run], INTCHARS) then
begin
Inc (Run);
fTokenID := tkFloat;
State := nsDotFound;
// Non-number dot
end else begin
// Ellipsis
if (FLine[Run] = DOT) and (FLine[Run+1] = DOT) then
Inc (Run, 2);
fTokenID := tkSymbol;
Result := False;
Exit;
end; // if
end; // DOT
// Look for zero (0)
ZERO: begin
temp := FLine[Run];
// 0x123ABC
if CharInSet(temp, HEXINDICATOR) then begin
Inc (Run);
fTokenID := tkHex;
State := nsHex;
// 0.45
end else if temp = DOT then begin
Inc (Run);
State := nsDotFound;
fTokenID := tkFloat;
end else if CharInSet(temp, INTCHARS) then begin
Inc (Run);
// 0123 or 0123.45
if CharInSet(temp, OCTCHARS) then begin
fTokenID := tkOct;
State := nsOct;
// 0899.45
end else begin
fTokenID := tkFloat;
State := nsFloatNeeded;
end; // if
end; // if
end; // ZERO
end; // case
Result := True;
end; // CheckSpecialCases
function HandleBadNumber: Boolean;
begin
Result := False;
fTokenID := tkUnknown;
// Ignore all tokens till end of "number"
while IsIdentChar(FLine[Run]) or (FLine[Run] = DOT) do
Inc (Run);
end; // HandleBadNumber
function HandleExponent: Boolean;
begin
State := nsExpFound;
fTokenID := tkFloat;
// Skip e[+/-]
if CharInSet(FLine[Run+1], EXPONENTSIGN) then
Inc (Run);
// Invalid token : 1.0e
if not CharInSet(FLine[Run+1], INTCHARS) then begin
Inc (Run);
Result := HandleBadNumber;
Exit;
end; // if
Result := True;
end; // HandleExponent
function HandleDot: Boolean;
begin
// Check for ellipsis
Result := (FLine[Run+1] <> DOT) or (FLine[Run+2] <> DOT);
if Result then begin
State := nsDotFound;
fTokenID := tkFloat;
end; // if
end; // HandleDot
function CheckStart: Boolean;
begin
// 1234
if CharInSet(temp, INTCHARS) then begin
Result := True;
//123e4
end else if CharInSet(temp, EXPONENTINDICATOR) then begin
Result := HandleExponent;
// 123.45j
end else if CharInSet(temp, IMAGINARYINDICATOR) then begin
Inc (Run);
fTokenID := tkFloat;
Result := False;
// 123.45
end else if temp = DOT then begin
Result := HandleDot;
// Error!
end else if CharInSet(temp, LONGINDICATOR) then begin
Result := False;
end else if IsIdentChar(temp) then begin
Result := HandleBadNumber;
// End of number
end else begin
Result := False;
end; // if
end; // CheckStart
function CheckDotFound: Boolean;
begin
// 1.0e4
if CharInSet(temp, EXPONENTINDICATOR) then begin
Result := HandleExponent;
// 123.45
end else if CharInSet(temp, INTCHARS) then begin
Result := True;
// 123.45j
end else if CharInSet(temp, IMAGINARYINDICATOR) then begin
Inc (Run);
Result := False;
// 123.45.45: Error!
end else if temp = DOT then begin
Result := False;
if HandleDot then
HandleBadNumber;
// Error!
end else if IsIdentChar(temp) then begin
Result := HandleBadNumber;
// End of number
end else begin
Result := False;
end; // if
end; // CheckDotFound
function CheckFloatNeeded: Boolean;
begin
// 091.0e4
if CharInSet(temp, EXPONENTINDICATOR) then begin
Result := HandleExponent;
// 0912345
end else if CharInSet(temp, INTCHARS) then begin
Result := True;
// 09123.45
end else if temp = DOT then begin
Result := HandleDot or HandleBadNumber; // Bad octal
// 09123.45j
end else if CharInSet(temp, IMAGINARYINDICATOR) then begin
Inc (Run);
Result := False;
// End of number (error: Bad oct number) 0912345
end else begin
Result := HandleBadNumber;
end;
end; // CheckFloatNeeded
function CheckHex: Boolean;
begin
// 0x123ABC
if CharInSet(temp, HEXCHARS) then begin
Result := True;
// 0x123ABCL
end else if CharInSet(temp, LONGINDICATOR) then
begin
Inc (Run);
Result := False;
// 0x123.45: Error!
end else if temp = DOT then begin
Result := False;
if HandleDot then
HandleBadNumber;
// Error!
end else if IsIdentChar(temp) then begin
Result := HandleBadNumber;
// End of number
end else begin
Result := False;
end; // if
end; // CheckHex
function CheckOct: Boolean;
begin
// 012345
if CharInSet(temp, INTCHARS) then begin
if not CharInSet(temp, OCTCHARS) then begin
State := nsFloatNeeded;
fTokenID := tkFloat;
end; // if
Result := True;
// 012345L
end else if CharInSet(temp, LONGINDICATOR) then begin
Inc (Run);
Result := False;
// 0123e4
end else if CharInSet(temp, EXPONENTINDICATOR) then begin
Result := HandleExponent;
// 0123j
end else if CharInSet(temp, IMAGINARYINDICATOR) then begin
Inc (Run);
fTokenID := tkFloat;
Result := False;
// 0123.45
end else if temp = DOT then begin
Result := HandleDot;
// Error!
end else if IsIdentChar(temp) then begin
Result := HandleBadNumber;
// End of number
end else begin
Result := False;
end; // if
end; // CheckOct
function CheckExpFound: Boolean;
begin
// 1e+123
if CharInSet(temp, INTCHARS) then begin
Result := True;
// 1e+123j
end else if CharInSet(temp, IMAGINARYINDICATOR) then begin
Inc (Run);
Result := False;
// 1e4.5: Error!
end else if temp = DOT then begin
Result := False;
if HandleDot then
HandleBadNumber;
// Error!
end else if IsIdentChar(temp) then begin
Result := HandleBadNumber;
// End of number
end else begin
Result := False;
end; // if
end; // CheckExpFound
begin
State := nsStart;
fTokenID := tkNumber;
temp := FLine[Run];
Inc (Run);
// Special cases
if not CheckSpecialCases then
Exit;
// Use a state machine to parse numbers
while True do begin
temp := FLine[Run];
case State of
nsStart:
if not CheckStart then Exit;
nsDotFound:
if not CheckDotFound then Exit;
nsFloatNeeded:
if not CheckFloatNeeded then Exit;
nsHex:
if not CheckHex then Exit;
nsOct:
if not CheckOct then Exit;
nsExpFound:
if not CheckExpFound then Exit;
end; // case
Inc (Run);
end; // while
end;
procedure TSynPythonSyn.SpaceProc;
begin
inc(Run);
fTokenID := tkSpace;
while (FLine[Run] <= #32) and not IsLineEnd(Run) do inc(Run);
end;
procedure TSynPythonSyn.String2Proc;
var
fBackslashCount: Integer;
begin
fTokenID := tkString;
if (FLine[Run + 1] = '"') and (FLine[Run + 2] = '"') then
begin
fTokenID := tkTrippleQuotedString2;
inc(Run, 3);
fRange := rsMultilineString2;
while fLine[Run] <> #0 do