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, 68 insertions, 0 deletions

diff --git a/lexers/idl.lua b/lexers/idl.lua
new file mode 100644
index 0000000..bc5cbff
--- /dev/null
+++ b/lexers/idl.lua
@@ -0,0 +1,68 @@
+-- Copyright 2006-2015 Mitchell mitchell.att.foicica.com. See LICENSE.
+-- IDL 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 = 'idl'}
+
+-- 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 string = token(l.STRING, sq_str + dq_str)
+
+-- Numbers.
+local number = token(l.NUMBER, l.float + l.integer)
+
+-- Preprocessor.
+local preproc_word = word_match{
+  'define', 'undef', 'ifdef', 'ifndef', 'if', 'elif', 'else', 'endif',
+  'include', 'warning', 'pragma'
+}
+local preproc = token(l.PREPROCESSOR,
+                      l.starts_line('#') * preproc_word * l.nonnewline^0)
+
+-- Keywords.
+local keyword = token(l.KEYWORD, word_match{
+  'abstract', 'attribute', 'case', 'const', 'context', 'custom', 'default',
+  'exception', 'enum', 'factory', 'FALSE', 'in', 'inout', 'interface', 'local',
+  'module', 'native', 'oneway', 'out', 'private', 'public', 'raises',
+  'readonly', 'struct', 'support', 'switch', 'TRUE', 'truncatable', 'typedef',
+  'union', 'valuetype'
+})
+
+-- Types.
+local type = token(l.TYPE, word_match{
+  'any', 'boolean', 'char', 'double', 'fixed', 'float', 'long', 'Object',
+  'octet', 'sequence', 'short', 'string', 'unsigned', 'ValueBase', 'void',
+  'wchar', 'wstring'
+})
+
+-- 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},
+  {'preprocessor', preproc},
+  {'operator', operator},
+}
+
+return M