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/qreg-commands.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'src/qreg-commands.h') diff --git a/src/qreg-commands.h b/src/qreg-commands.h index 27a6a5c..d999587 100644 --- a/src/qreg-commands.h +++ b/src/qreg-commands.h @@ -20,6 +20,7 @@ #include "sciteco.h" #include "parser.h" +#include "lexer.h" #include "qreg.h" static inline void @@ -55,6 +56,7 @@ gboolean teco_state_expectqreg_process_edit_cmd(teco_machine_main_t *ctx, teco_m .initial_cb = (teco_state_initial_cb_t)teco_state_expectqreg_initial, \ .process_edit_cmd_cb = (teco_state_process_edit_cmd_cb_t) \ teco_state_expectqreg_process_edit_cmd, \ + .style = SCE_SCITECO_QREG, \ .expectqreg.type = TECO_QREG_REQUIRED, \ .expectqreg.got_register_cb = NAME##_got_register, /* always required */ \ ##__VA_ARGS__ \ -- cgit v1.2.3