Custom syntax highlight

steve64

I would like to add syntax highlight for an additional language (not already supported like C or Pascal) inside LuaRT Studio. Is it possible?

Samir

You should read this Zerobrane Studio documentation link [Login to see the link]

I've not tested it but it should work too for LuaRT Studio

steve64

I'm already able to customize colors for different items in an existing language.
My request is for adding a new syntax in terms of a list of keywords, operators, etc.
Not sure it's feasible with ZeroBrane or (LuaRT Studio) since the list of supported programming languages could be frozen.

Samir

Oh ok.
You can add a new lexer by setting a new lua file in the spec folder of LuaRT Studio.

Your new lexer must be derived from a Scintilla lexer.
See [Login to see the link] for a list of the wxSTC_LEX_* lexers.

steve64

It's a bit hard without a clear documentation...
What I'm trying to do is to define a syntax highlight for Oberon, so I started from MODULA existing support.
So far I have tried to put an oberon.lua file under the LuaRT Studio spec folder as follows,
but the IDE hangs when loading the spec:

local spec = {
  exts = {"obn"},
  lexer = wxstc.wxSTC_LEX_MODULA,
  apitype = "obn",
  stylingbits = 5,
  lexerstyleconvert = {
    text = {wxstc.wxSTC_MODULA_DEFAULT,},
    comment = {wxstc.wxSTC_MODULA_COMMENT,},
    operator = {wxstc.wxSTC_MODULA_OPERATOR,},
    number = {wxstc.wxSTC_MODULA_NUMBER,wxstc.wxSTC_MODULA_BASENUM,},
    stringtxt = {wxstc.wxSTC_MODULA_STRING,},
    lexerdef=  {wxstc.wxSTC_MODULA_DEFAULT,},
    keywords0 = {wxstc.wxSTC_MODULA_KEYWORD,},
  },
  keywords = {
    [[ARRAY BEGIN BY CASE CONST DIV DO ELSE ELSIF END FALSE FOR IF IMPORT IN IS MOD MODULE NIL OF OR POINTER PROCEDURE RECORD REPEAT RETURN THEN TO TRUE TYPE UNTIL VAR WHILE]]
    },
}

return spec

Samir

For me it works : you just have to rename the file you created above "obn.lua" (the extension of the Oberon files)
Now all files with extension ".obn" will be associated with this spec file

I agree with you, this is not documented in Zerobrane Studio, I had to guess it by myself (as many other things !)

steve64

Thanks, I confirm that now it's working also on my side.

steve64

It's very strange, the same obn.lua file today is starting to generare hangs again...
The hang occurs when the IDE tries to open a file with .obn extension

Samir

I have repoduced the crash too.
But I can help you more on this one, LuaRT Studio main purpose is to be a Lua IDE. I don't have enough time in a day 😉

You should try to use the Zerobrane Studio, but I'm afraid it will hang too as I think that it's related to the fact that you need to define a "marksymbols" key in the spec table, as the IDE internal parser seems to look for it.