diff options
Diffstat (limited to 'context/data/textadept/context/lexers/scite-context-lexer-cpp.lua')
| -rw-r--r-- | context/data/textadept/context/lexers/scite-context-lexer-cpp.lua | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/context/data/textadept/context/lexers/scite-context-lexer-cpp.lua b/context/data/textadept/context/lexers/scite-context-lexer-cpp.lua new file mode 100644 index 000000000..d56dc58f9 --- /dev/null +++ b/context/data/textadept/context/lexers/scite-context-lexer-cpp.lua @@ -0,0 +1,189 @@ +local info = { + version = 1.002, + comment = "scintilla lpeg lexer for cpp", + author = "Hans Hagen, PRAGMA-ADE, Hasselt NL", + copyright = "PRAGMA ADE / ConTeXt Development Team", + license = "see context related readme files", +} + +-- looks liks the original cpp lexer but web ready (so nothing special here yet) + +local P, R, S = lpeg.P, lpeg.R, lpeg.S + +-- local lexer = require("lexer") +local lexer = require("scite-context-lexer") +local context = lexer.context +local patterns = context.patterns + +local token = lexer.token +local exact_match = lexer.exact_match + +local cpplexer = lexer.new("cpp","scite-context-lexer-cpp") +local whitespace = cpplexer.whitespace + +local keywords = { -- copied from cpp.lua + -- c + "asm", "auto", "break", "case", "const", "continue", "default", "do", "else", + "extern", "false", "for", "goto", "if", "inline", "register", "return", + "sizeof", "static", "switch", "true", "typedef", "volatile", "while", + "restrict", + -- hm + "_Bool", "_Complex", "_Pragma", "_Imaginary", + -- c++. + "catch", "class", "const_cast", "delete", "dynamic_cast", "explicit", + "export", "friend", "mutable", "namespace", "new", "operator", "private", + "protected", "public", "signals", "slots", "reinterpret_cast", + "static_assert", "static_cast", "template", "this", "throw", "try", "typeid", + "typename", "using", "virtual" +} + +local datatypes = { -- copied from cpp.lua + "bool", "char", "double", "enum", "float", "int", "long", "short", "signed", + "struct", "union", "unsigned", "void" +} + +local macros = { -- copied from cpp.lua + "define", "elif", "else", "endif", "error", "if", "ifdef", "ifndef", "import", + "include", "line", "pragma", "undef", "using", "warning" +} + +local space = patterns.space -- S(" \n\r\t\f\v") +local any = patterns.any +local restofline = patterns.restofline +local startofline = patterns.startofline + +local squote = P("'") +local dquote = P('"') +local period = P(".") +local escaped = P("\\") * P(1) +local slashes = P("//") +local begincomment = P("/*") +local endcomment = P("*/") +local percent = P("%") + +local hexadecimal = patterns.hexadecimal +local decimal = patterns.decimal +local float = patterns.float +local integer = P("-")^-1 * (hexadecimal + decimal) -- also in patterns ? + +local spacing = token(whitespace, space^1) +local rest = token("default", any) + +local shortcomment = token("comment", slashes * restofline^0) +local longcomment = token("comment", begincomment * (1-endcomment)^0 * endcomment^-1) + +local shortstring = token("quote", dquote) -- can be shared + * token("string", (escaped + (1-dquote))^0) + * token("quote", dquote) + + token("quote", squote) + * token("string", (escaped + (1-squote))^0) + * token("quote", squote) + +local number = token("number", float + integer) + +local validword = R("AZ","az","__") * R("AZ","az","__","09")^0 +local identifier = token("default",validword) + +local operator = token("special", S("+-*/%^!=<>;:{}[]().&|?~")) + +----- optionalspace = spacing^0 + +local p_keywords = exact_match(keywords) +local p_datatypes = exact_match(datatypes) +local p_macros = exact_match(macros) + +local keyword = token("keyword", p_keywords) +local datatype = token("keyword", p_datatypes) +local identifier = token("default", validword) + +local macro = token("data", #P("#") * startofline * P("#") * S("\t ")^0 * p_macros) + +cpplexer._rules = { + { "whitespace", spacing }, + { "keyword", keyword }, + { "type", datatype }, + { "identifier", identifier }, + { "string", shortstring }, + { "longcomment", longcomment }, + { "shortcomment", shortcomment }, + { "number", number }, + { "macro", macro }, + { "operator", operator }, + { "rest", rest }, +} + +local web = lexer.loadluafile("scite-context-lexer-web-snippets") + +if web then + + lexer.inform("supporting web snippets in cpp lexer") + + cpplexer._rules_web = { + { "whitespace", spacing }, + { "keyword", keyword }, + { "type", datatype }, + { "identifier", identifier }, + { "string", shortstring }, + { "longcomment", longcomment }, + { "shortcomment", shortcomment }, + { "web", web.pattern }, + { "number", number }, + { "macro", macro }, + { "operator", operator }, + { "rest", rest }, + } + +else + + lexer.report("not supporting web snippets in cpp lexer") + + cpplexer._rules_web = { + { "whitespace", spacing }, + { "keyword", keyword }, + { "type", datatype }, + { "identifier", identifier }, + { "string", shortstring }, + { "longcomment", longcomment }, + { "shortcomment", shortcomment }, + { "number", number }, + { "macro", macro }, + { "operator", operator }, + { "rest", rest }, + } + +end + +cpplexer._tokenstyles = context.styleset + +cpplexer._foldpattern = P("/*") + P("*/") + S("{}") -- separate entry else interference (singular?) + +cpplexer._foldsymbols = { + _patterns = { + "[{}]", + "/%*", + "%*/", + }, + -- ["data"] = { -- macro + -- ["region"] = 1, + -- ["endregion"] = -1, + -- ["if"] = 1, + -- ["ifdef"] = 1, + -- ["ifndef"] = 1, + -- ["endif"] = -1, + -- }, + ["special"] = { -- operator + ["{"] = 1, + ["}"] = -1, + }, + ["comment"] = { + ["/*"] = 1, + ["*/"] = -1, + } +} + +-- -- by indentation: + +cpplexer._foldpatterns = nil +cpplexer._foldsymbols = nil + +return cpplexer |