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authorRobin Haberkorn <robin.haberkorn@googlemail.com>2024-12-09 12:58:25 +0300
committerRobin Haberkorn <robin.haberkorn@googlemail.com>2024-12-13 00:58:14 +0300
commit244a54a18b7db6af177c9d10f3224772f08d7484 (patch)
tree188f5a2f1b2e3311efb65299b639021a231540af /lib/lexers/sciteco.tes
parent7cc78b82e19816220dac5ddf83e51f1140894b42 (diff)
downloadsciteco-244a54a18b7db6af177c9d10f3224772f08d7484.tar.gz
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.
Diffstat (limited to 'lib/lexers/sciteco.tes')
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1 files changed, 20 insertions, 0 deletions
diff --git a/lib/lexers/sciteco.tes b/lib/lexers/sciteco.tes
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--- /dev/null
+++ b/lib/lexers/sciteco.tes
@@ -0,0 +1,20 @@
+!* SciTECO syntax highlighting *!
+
+@[lexer.test.sciteco]{
+ _#!Msciteco:M[lexer.checkheader]"S -1 '
+ :EN*.tesQ*"S -1 '
+ :EN*.tecQ*"S -1 '
+ :EN*.teco_iniQ*
+}
+
+@[lexer.set.sciteco]{
+ ESSETILEXERsciteco
+ !*:M[color.keyword],1M[color.set]*!
+ :M[color.operator],2M[color.set]
+ :M[color.variable],3M[color.set]
+ :M[color.string],4M[color.set]
+ :M[color.number],5M[color.set]
+ :M[color.comment],6M[color.set] !* labels *!
+ :M[color.comment],7M[color.set]
+ :M[color.error],8M[color.set]
+}