+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);
+};
+
+#ifdef SCI_NAMESPACE
+}
+#endif
+
+/**
+ * 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;
+}