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