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# -*- coding: utf-8 -*- #
# frozen_string_literal: true
module Rouge
module Lexers
class J < RegexLexer
title 'J'
desc "The J programming language (jsoftware.com)"
tag 'j'
filenames '*.ijs', '*.ijt'
# For J-specific terms we use, see:
# https://code.jsoftware.com/wiki/Vocabulary/AET
# https://code.jsoftware.com/wiki/Vocabulary/Glossary
# https://code.jsoftware.com/wiki/Vocabulary/PartsOfSpeech
def self.token_map
@token_map ||= {
noun: Keyword::Constant,
verb: Name::Function,
modifier: Operator,
name: Name,
param: Name::Builtin::Pseudo,
other: Punctuation,
nil => Error,
}
end
# https://code.jsoftware.com/wiki/NuVoc
def self.inflection_list
@inflection_list ||= ['', '.', ':', '..', '.:', ':.', '::']
end
def self.primitive_table
@primitive_table ||= Hash.new([:name]).tap do |h|
{
'()' => [:other],
'=' => [:verb, :other, :other],
'<>+-*%$|,#' => [:verb, :verb, :verb],
'^' => [:verb, :verb, :modifier],
'~"' => [:modifier, :verb, :verb],
'.:@' => [:modifier, :modifier, :modifier],
';' => [:verb, :modifier, :verb],
'!' => [:verb, :modifier, :modifier],
'/\\' => [:modifier, :modifier, :verb],
'[' => [:verb, nil, :verb],
']' => [:verb],
'{' => [:verb, :verb, :verb, nil, nil, nil, :verb],
'}' => [:modifier, :verb, :verb, nil, nil, nil, :modifier],
'`' => [:modifier, nil, :modifier],
'&' => [:modifier, :modifier, :modifier, nil, :modifier],
'?' => [:verb, :verb],
'a' => [:name, :noun, :noun],
'ACeEIjorv' => [:name, :verb],
'bdfHMT' => [:name, :modifier],
'Dt' => [:name, :modifier, :modifier],
'F' => [:name, :modifier, :modifier, :modifier, :modifier,
:modifier, :modifier],
'iu' => [:name, :verb, :verb],
'L' => [:name, :verb, :modifier],
'mny' => [:param],
'p' => [:name, :verb, :verb, :verb],
'qsZ' => [:name, nil, :verb],
'S' => [:name, nil, :modifier],
'u' => [:param, :verb, :verb],
'v' => [:param, :verb],
'x' => [:param, nil, :verb],
}.each {|k, v| k.each_char {|c| h[c] = v } }
end
end
def self.primitive(char, inflection)
i = inflection_list.index(inflection) or return Error
token_map[primitive_table[char][i]]
end
def self.control_words
@control_words ||= Set.new %w(
assert break case catch catchd catcht continue do else elseif end
fcase for if return select throw try while whilst
)
end
def self.control_words_id
@control_words_id ||= Set.new %w(for goto label)
end
state :expr do
rule %r/\s+/, Text
rule %r'([!-&(-/:-@\[-^`{-~]|[A-Za-z]\b)([.:]*)' do |m|
token J.primitive(m[1], m[2])
end
rule %r/(?:\d|_\d?):([.:]*)/ do |m|
token m[1].empty? ? J.token_map[:verb] : Error
end
rule %r/[\d_][\w.]*([.:]*)/ do |m|
token m[1].empty? ? Num : Error
end
rule %r/'/, Str::Single, :str
rule %r/NB\.(?![.:]).*/, Comment::Single
rule %r/([A-Za-z]\w*)([.:]*)/ do |m|
if m[2] == '.'
word, sep, id = m[1].partition '_'
list = if sep.empty?
J.control_words
elsif not id.empty?
J.control_words_id
end
if list and list.include? word
token Keyword, word + sep
token((word == 'for' ? Name : Name::Label), id)
token Keyword, m[2]
else
token Error
end
else
token m[2].empty? ? Name : Error
end
end
end
state :str do
rule %r/''/, Str::Escape
rule %r/[^'\n]+/, Str::Single
rule %r/'|$/, Str::Single, :pop!
end
start do
@note_next = false
end
state :root do
rule %r/\n/ do
token Text
if @note_next
push :note
@note_next = false
end
end
# https://code.jsoftware.com/wiki/Vocabulary/com
# https://code.jsoftware.com/wiki/Vocabulary/NounExplicitDefinition
rule %r/
([0-4]|13|adverb|conjunction|dyad|monad|noun|verb)([\ \t]+)
(def(?:ine)?\b|:)(?![.:])([\ \t]*)
/x do |m|
groups Keyword::Pseudo, Text, Keyword::Pseudo, Text
@def_body = (m[1] == '0' || m[1] == 'noun') ? :noun : :code
if m[3] == 'define'
# stack: [:root]
# or [:root, ..., :def_next]
pop! if stack.size > 1
push @def_body
push :def_next # [:root, ..., @def_body, :def_next]
else
push :expl_def
end
end
rule %r/^([ \t]*)(Note\b(?![.:]))([ \t\r]*)(?!=[.:]|$)/ do
groups Text, Name, Text
@note_next = true
end
rule %r/[mnuvxy]\b(?![.:])/, Name
mixin :expr
end
state :def_next do
rule %r/\n/, Text, :pop!
mixin :root
end
state :expl_def do
rule %r/0\b(?![.:])/ do
token Keyword::Pseudo
# stack: [:root, :expl_def]
# or [:root, ..., :def_next, :expl_def]
pop! if stack.size > 2
goto @def_body
push :def_next # [:root, ..., @def_body, :def_next]
end
rule %r/'/ do
if @def_body == :noun
token Str::Single
goto :str
else
token Punctuation
goto :q_expr
end
end
rule(//) { pop! }
end
# `q_expr` lexes the content of a string literal which is a part of an
# explicit definition.
# e.g. dyad def 'x + y'
state :q_expr do
rule %r/''/, Str::Single, :q_str
rule %r/'|$/, Punctuation, :pop!
rule %r/NB\.(?![.:])([^'\n]|'')*/, Comment::Single
mixin :expr
end
state :q_str do
rule %r/''''/, Str::Escape
rule %r/[^'\n]+/, Str::Single
rule %r/''/, Str::Single, :pop!
rule(/'|$/) { token Punctuation; pop! 2 }
end
state :note do
mixin :delimiter
rule %r/.+\n?/, Comment::Multiline
end
state :noun do
mixin :delimiter
rule %r/.+\n?/, Str::Heredoc
end
state :code do
mixin :delimiter
rule %r/^([ \t]*)(:)([ \t\r]*)$/ do
groups Text, Punctuation, Text
end
mixin :expr
end
state :delimiter do
rule %r/^([ \t]*)(\))([ \t\r]*$\n?)/ do
groups Text, Punctuation, Text
pop!
end
end
end
end
end
|
