Rewrite CodeEditor syntax highlighting for issue #135

1 files changed, 59 insertions, 0 deletions

diff --git a/fluid/StyleParse.h b/fluid/StyleParse.h
new file mode 100644
index 000000000..e243a7e47
--- /dev/null
+++ b/fluid/StyleParse.h
@@ -0,0 +1,59 @@
+//
+// Syntax highlighting style parser class - erco 09/16/2020
+//
+// Copyright 1998-2020 by Bill Spitzak and others.
+//
+// This library is free software. Distribution and use rights are outlined in
+// the file "COPYING" which should have been included with this file.  If this
+// file is missing or damaged, see the license at:
+//
+//     https://www.fltk.org/COPYING.php
+//
+// Please see the following page on how to report bugs and issues:
+//
+//     https://www.fltk.org/bugs.php
+//
+
+#ifndef StyleParse_h
+#define StyleParse_h
+
+// Class to manage style parsing, friend of CodeEditor
+class StyleParse {
+public:
+  const char *tbuff;        // text buffer
+  char       *sbuff;        // style buffer
+  int         len;          // running length
+  char        style;        // current style
+  char        lwhite;       // leading white space (1=white, 0=past white)
+  int         col;          // line's column counter
+  char        keyword[40];  // keyword parsing buffer
+  char        last;         // flag for keyword parsing
+
+  StyleParse() {
+    tbuff  = 0;
+    sbuff  = 0;
+    len    = 0;
+    style  = 0;
+    lwhite = 1;
+    col    = 0;
+    last   = 0;
+  }
+
+  // Methods to aid in parsing
+  int  parse_over_char(int handle_crlf=1);
+  int  parse_over_white();
+  int  parse_over_alpha();
+  int  parse_to_eol(char s);
+  int  parse_block_comment();     // "/* text.. */"
+  void buffer_keyword();
+  int  parse_over_key(const char *key, char s);
+  int  parse_over_angles(char s);
+  int  parse_keyword();           // "switch"
+  int  parse_quoted_string();     // "hello"
+  int  parse_directive();         // "#define"
+  int  parse_line_comment();      // "// text.."
+  int  parse_escape();            // "\'"
+  int  parse_all_else();          // all other code
+};
+
+#endif //StyleParse_h