From 244a54a18b7db6af177c9d10f3224772f08d7484 Mon Sep 17 00:00:00 2001 From: Robin Haberkorn Date: Mon, 9 Dec 2024 12:58:25 +0300 Subject: implemented Scintilla lexer for SciTECO code, i.e. TECO syntax highlighting * this works by embedding the SciTECO parser and driving it always (exclusively) in parse-only mode. * A new teco_state_t::style determines the Scintilla style for any character accepted in the given state. * Therefore, the SciTECO lexer is always 100% exact and corresponds to the current SciTECO grammer - it does not have to be maintained separately. There are a few exceptions and tweaks, though. * The contents of curly-brace escapes (`@^Uq{...}`) are rendered as ordinary code using a separate parser instance. This can be disabled with the lexer.sciteco.macrodef property. Unfortunately, SciTECO does not currently allow setting lexer properties (FIXME). * Labels and comments are currently styled the same. This could change in the future once we introduce real comments. * Lexers are usually implemented in C++, but I did not want to draw in C++. Especially not since we'd have to include parser.h and other SciTECO headers, that really do not want to keep C++-compatible. Instead, the lexer is implemented "in the container". @ES/SCI_SETILEXER/sciteco/ is internally translated to SCI_SETILEXER(NULL) and we get Scintilla notifications when styling the view becomes necessary. This is then centrally forwarded to the teco_lexer_style() which uses the ordinary teco_view_ssm() API for styling. * Once the command line becomes a Scintilla view even on Curses, we can enabled syntax highlighting of the command line macro. --- src/view.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'src/view.h') diff --git a/src/view.h b/src/view.h index 8f54fdd..eebafbf 100644 --- a/src/view.h +++ b/src/view.h @@ -83,3 +83,5 @@ teco_int_t teco_view_bytes2glyphs(teco_view_t *ctx, gsize pos); gssize teco_view_glyphs2bytes_relative(teco_view_t *ctx, gsize pos, teco_int_t n); teco_int_t teco_view_get_character(teco_view_t *ctx, gsize pos, gsize len); + +void teco_view_process_notify(teco_view_t *ctx, SCNotification *notify); -- cgit v1.2.3