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// Scintilla source code edit control
/** @file KeyWords.h
** Colourise for particular languages.
**/
// Copyright 1998-2001 by Neil Hodgson <neilh@scintilla.org>
// The License.txt file describes the conditions under which this software may be distributed.
typedef void (*LexerFunction)(unsigned int startPos, int lengthDoc, int initStyle,
WordList *keywordlists[], Accessor &styler);
/**
* A LexerModule is responsible for lexing and folding a particular language.
* The class maintains a list of LexerModules which can be searched to find a
* module appropriate to a particular language.
*/
class LexerModule {
protected:
const LexerModule *next;
int language;
LexerFunction fnLexer;
LexerFunction fnFolder;
const char * const * wordListDescriptions;
int styleBits;
static const LexerModule *base;
static int nextLanguage;
public:
const char *languageName;
LexerModule(int language_,
LexerFunction fnLexer_,
const char *languageName_=0,
LexerFunction fnFolder_=0,
const char * const wordListDescriptions_[] = NULL,
int styleBits_=5);
virtual ~LexerModule() {
}
int GetLanguage() const { return language; }
// -1 is returned if no WordList information is available
int GetNumWordLists() const;
const char *GetWordListDescription(int index) const;
int GetStyleBitsNeeded() const;
virtual void Lex(unsigned int startPos, int lengthDoc, int initStyle,
WordList *keywordlists[], Accessor &styler) const;
virtual void Fold(unsigned int startPos, int lengthDoc, int initStyle,
WordList *keywordlists[], Accessor &styler) const;
static const LexerModule *Find(int language);
static const LexerModule *Find(const char *languageName);
};
/**
* Check if a character is a space.
* This is ASCII specific but is safe with chars >= 0x80.
*/
inline bool isspacechar(unsigned char ch) {
return (ch == ' ') || ((ch >= 0x09) && (ch <= 0x0d));
}
inline bool iswordchar(char ch) {
return isascii(ch) && (isalnum(ch) || ch == '.' || ch == '_');
}
inline bool iswordstart(char ch) {
return isascii(ch) && (isalnum(ch) || ch == '_');
}
inline bool isoperator(char ch) {
if (isascii(ch) && isalnum(ch))
return false;
// '.' left out as it is used to make up numbers
if (ch == '%' || ch == '^' || ch == '&' || ch == '*' ||
ch == '(' || ch == ')' || ch == '-' || ch == '+' ||
ch == '=' || ch == '|' || ch == '{' || ch == '}' ||
ch == '[' || ch == ']' || ch == ':' || ch == ';' ||
ch == '<' || ch == '>' || ch == ',' || ch == '/' ||
ch == '?' || ch == '!' || ch == '.' || ch == '~')
return true;
return false;
}
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