Import LPeg based lexers from Scintillua 3.6.1-1

These are Copyright (c) 2007-2015 Mitchell and released under the
MIT license.

1 files changed, 81 insertions, 0 deletions

diff --git a/lexers/boo.lua b/lexers/boo.lua
new file mode 100644
index 0000000..54ad1a6
--- /dev/null
+++ b/lexers/boo.lua
@@ -0,0 +1,81 @@
+-- Copyright 2006-2015 Mitchell mitchell.att.foicica.com. See LICENSE.
+-- Boo LPeg lexer.
+
+local l = require('lexer')
+local token, word_match = l.token, l.word_match
+local P, R, S = lpeg.P, lpeg.R, lpeg.S
+
+local M = {_NAME = 'boo'}
+
+-- Whitespace.
+local ws = token(l.WHITESPACE, l.space^1)
+
+-- Comments.
+local line_comment = '#' * l.nonnewline_esc^0
+local block_comment = '/*' * (l.any - '*/')^0 * P('*/')^-1
+local comment = token(l.COMMENT, line_comment + block_comment)
+
+-- Strings.
+local sq_str = l.delimited_range("'", true)
+local dq_str = l.delimited_range('"', true)
+local triple_dq_str = '"""' * (l.any - '"""')^0 * P('"""')^-1
+local regex_str = #('/') * l.last_char_includes('!%^&*([{-=+|:;,?<>~') *
+                  l.delimited_range('/', true)
+local string = token(l.STRING, triple_dq_str + sq_str + dq_str) +
+               token(l.REGEX, regex_str)
+
+
+-- Numbers.
+local number = token(l.NUMBER, (l.float + l.integer) *
+                               (S('msdhsfFlL') + 'ms')^-1)
+
+-- Keywords.
+local keyword = token(l.KEYWORD, word_match{
+  'and', 'break', 'cast', 'continue', 'elif', 'else', 'ensure', 'except', 'for',
+  'given', 'goto', 'if', 'in', 'isa', 'is', 'not', 'or', 'otherwise', 'pass',
+  'raise', 'ref', 'try', 'unless', 'when', 'while',
+  -- Definitions.
+  'abstract', 'callable', 'class', 'constructor', 'def', 'destructor', 'do',
+  'enum', 'event', 'final', 'get', 'interface', 'internal', 'of', 'override',
+  'partial', 'private', 'protected', 'public', 'return', 'set', 'static',
+  'struct', 'transient', 'virtual', 'yield',
+  -- Namespaces.
+  'as', 'from', 'import', 'namespace',
+  -- Other.
+  'self', 'super', 'null', 'true', 'false'
+})
+
+-- Types.
+local type = token(l.TYPE, word_match{
+  'bool', 'byte', 'char', 'date', 'decimal', 'double', 'duck', 'float', 'int',
+  'long', 'object', 'operator', 'regex', 'sbyte', 'short', 'single', 'string',
+  'timespan', 'uint', 'ulong', 'ushort'
+})
+
+-- Functions.
+local func = token(l.FUNCTION, word_match{
+  'array', 'assert', 'checked', 'enumerate', '__eval__', 'filter', 'getter',
+  'len', 'lock', 'map', 'matrix', 'max', 'min', 'normalArrayIndexing', 'print',
+  'property', 'range', 'rawArrayIndexing', 'required', '__switch__', 'typeof',
+  'unchecked', 'using', 'yieldAll', 'zip'
+})
+
+-- Identifiers.
+local identifier = token(l.IDENTIFIER, l.word)
+
+-- Operators.
+local operator = token(l.OPERATOR, S('!%^&*()[]{}-=+/|:;.,?<>~`'))
+
+M._rules = {
+  {'whitespace', ws},
+  {'keyword', keyword},
+  {'type', type},
+  {'function', func},
+  {'identifier', identifier},
+  {'string', string},
+  {'comment', comment},
+  {'number', number},
+  {'operator', operator},
+}
+
+return M