diff options
Diffstat (limited to 'context/data/textadept/context/lexers/scite-context-lexer-bnf.lua')
| -rw-r--r-- | context/data/textadept/context/lexers/scite-context-lexer-bnf.lua | 99 |
1 files changed, 0 insertions, 99 deletions
diff --git a/context/data/textadept/context/lexers/scite-context-lexer-bnf.lua b/context/data/textadept/context/lexers/scite-context-lexer-bnf.lua deleted file mode 100644 index ce57642ba..000000000 --- a/context/data/textadept/context/lexers/scite-context-lexer-bnf.lua +++ /dev/null @@ -1,99 +0,0 @@ -local info = { - version = 1.001, - comment = "scintilla lpeg lexer for bnf", - author = "Hans Hagen, PRAGMA-ADE, Hasselt NL", - copyright = "PRAGMA ADE / ConTeXt Development Team", - license = "see context related readme files", -} - --- will replace the one in metafun - -local global, lpeg = _G, lpeg -local P, R, S = lpeg.P, lpeg.R, lpeg.S - -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 bnflexer = lexer.new("bnf","scite-context-lexer-bnf") -local whitespace = bnflexer.whitespace - --- from wikipedia: --- --- <syntax> ::= <rule> | <rule> <syntax> --- <rule> ::= <opt-whitespace> "<" <rule-name> ">" <opt-whitespace> "::=" <opt-whitespace> <expression> <line-end> --- <opt-whitespace> ::= " " <opt-whitespace> | "" --- <expression> ::= <list> | <list> <opt-whitespace> "|" <opt-whitespace> <expression> --- <line-end> ::= <opt-whitespace> <EOL> | <line-end> <line-end> --- <list> ::= <term> | <term> <opt-whitespace> <list> --- <term> ::= <literal> | "<" <rule-name> ">" --- <literal> ::= '"' <text1> '"' | "'" <text2> "'" --- <text1> ::= "" | <character1> <text1> --- <text2> ::= "" | <character2> <text2> --- <character> ::= <letter> | <digit> | <symbol> --- <letter> ::= "A" | "B" | "C" | "D" | "E" | "F" | "G" | "H" | "I" | "J" | "K" | "L" | "M" | "N" | "O" | "P" | "Q" | "R" | "S" | "T" | "U" | "V" | "W" | "X" | "Y" | "Z" | "a" | "b" | "c" | "d" | "e" | "f" | "g" | "h" | "i" | "j" | "k" | "l" | "m" | "n" | "o" | "p" | "q" | "r" | "s" | "t" | "u" | "v" | "w" | "x" | "y" | "z" --- <digit> ::= "0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9" --- <symbol> ::= "|" | " " | "-" | "!" | "#" | "$" | "%" | "&" | "(" | ")" | "*" | "+" | "," | "-" | "." | "/" | ":" | ";" | ">" | "=" | "<" | "?" | "@" | "[" | "\" | "]" | "^" | "_" | "`" | "{" | "}" | "~" --- <character1> ::= <character> | "'" --- <character2> ::= <character> | '"' --- <rule-name> ::= <letter> | <rule-name> <rule-char> --- <rule-char> ::= <letter> | <digit> | "-" - -local anything = patterns.anything -local separator = P("|") -local left = P("<") -local right = P(">") -local space = S(" \t\n\r\f") -local spaces = space^1 -local letter = R("AZ","az") -local digit = R("09") -local symbol = S([[| -!#$%&()*+,-./:;>=<?@[\]^_`{}~]]) -local text = (letter + digit + symbol^0) -local name = letter * (letter + digit + P("-"))^0 -local becomes = P("::=") -local extra = P("|") -local single = P("'") -local double = P('"') - -local t_spacing = token(whitespace,space^1) -local t_term = token("command",left) - * token("text",name) - * token("command",right) -local t_text = token("quote",single) - * token("text",text) - * token("quote",single) - + token("quote",double) - * token("text",text) - * token("quote",double) -local t_becomes = token("operator",becomes) -local t_extra = token("extra",extra) -local t_rest = token("default",anything) - -bnflexer._rules = { - { "whitespace", t_spacing }, - { "term", t_term }, - { "text", t_text }, - { "becomes", t_becomes }, - { "extra", t_extra }, - { "rest", t_rest }, -} - -bnflexer._tokenstyles = context.styleset - -bnflexer._foldpattern = left + right - -bnflexer._foldsymbols = { - _patterns = { - "<", - ">", - }, - ["grouping"] = { - ["<"] = 1, - [">"] = -1, - }, -} - -return bnflexer |