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, 70 insertions, 0 deletions

diff --git a/lexers/pike.lua b/lexers/pike.lua
new file mode 100644
index 0000000..d5a130c
--- /dev/null
+++ b/lexers/pike.lua
@@ -0,0 +1,70 @@
+-- Copyright 2006-2015 Mitchell mitchell.att.foicica.com. See LICENSE.
+-- Pike 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 = 'pike'}
+
+-- Whitespace.
+local ws = token(l.WHITESPACE, l.space^1)
+
+-- Comments.
+local line_comment = '//' * l.nonnewline_esc^0
+local nested_comment = l.nested_pair('/*', '*/')
+local comment = token(l.COMMENT, line_comment + nested_comment)
+
+-- Strings.
+local sq_str = l.delimited_range("'", true)
+local dq_str = l.delimited_range('"', true)
+local lit_str = '#' * l.delimited_range('"')
+local string = token(l.STRING, sq_str + dq_str + lit_str)
+
+-- Numbers.
+local number = token(l.NUMBER, (l.float + l.integer) * S('lLdDfF')^-1)
+
+-- Preprocessors.
+local preproc = token(l.PREPROCESSOR, l.starts_line('#') * l.nonnewline^0)
+
+-- Keywords.
+local keyword = token(l.KEYWORD, word_match{
+  'break', 'case', 'catch', 'continue', 'default', 'do', 'else', 'for',
+  'foreach', 'gauge', 'if', 'lambda', 'return', 'sscanf', 'switch', 'while',
+  'import', 'inherit',
+  -- Type modifiers.
+  'constant', 'extern', 'final', 'inline', 'local', 'nomask', 'optional',
+  'private', 'protected', 'public', 'static', 'variant'
+})
+
+-- Types.
+local type = token(l.TYPE, word_match{
+  'array', 'class', 'float', 'function', 'int', 'mapping', 'mixed', 'multiset',
+  'object', 'program', 'string', 'void'
+})
+
+-- Identifiers.
+local identifier = token(l.IDENTIFIER, l.word)
+
+-- Operators.
+local operator = token(l.OPERATOR, S('<>=!+-/*%&|^~@`.,:;()[]{}'))
+
+M._rules = {
+  {'whitespace', ws},
+  {'keyword', keyword},
+  {'type', type},
+  {'identifier', identifier},
+  {'string', string},
+  {'comment', comment},
+  {'number', number},
+  {'preproc', preproc},
+  {'operator', operator},
+}
+
+M._foldsymbols = {
+  _patterns = {'[{}]', '/%*', '%*/', '//'},
+  [l.OPERATOR] = {['{'] = 1, ['}'] = -1},
+  [l.COMMENT] = {['/*'] = 1, ['*/'] = -1, ['//'] = l.fold_line_comments('//')}
+}
+
+return M