diff options
author | Robin Haberkorn <robin.haberkorn@googlemail.com> | 2024-12-09 12:58:25 +0300 |
---|---|---|
committer | Robin Haberkorn <robin.haberkorn@googlemail.com> | 2024-12-13 00:58:14 +0300 |
commit | 244a54a18b7db6af177c9d10f3224772f08d7484 (patch) | |
tree | 188f5a2f1b2e3311efb65299b639021a231540af /lib/lexers/sciteco.tes | |
parent | 7cc78b82e19816220dac5ddf83e51f1140894b42 (diff) | |
download | sciteco-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')
-rw-r--r-- | lib/lexers/sciteco.tes | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/lib/lexers/sciteco.tes b/lib/lexers/sciteco.tes new file mode 100644 index 0000000..058e79d --- /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] +} |