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# encoding: utf-8
module CodeRay
module Scanners
module Ruby::Patterns # :nodoc: all
RESERVED_WORDS = %w[
and def end in or unless begin
defined? ensure module redo super until
BEGIN break do next rescue then
when END case else for retry
while alias class elsif if not return
undef yield
]
# See http://murfy.de/ruby-constants.
PREDEFINED_CONSTANTS = %w[
nil true false self
DATA ARGV ARGF ENV
FALSE TRUE NIL
STDERR STDIN STDOUT
TOPLEVEL_BINDING
RUBY_COPYRIGHT RUBY_DESCRIPTION RUBY_ENGINE RUBY_PATCHLEVEL
RUBY_PLATFORM RUBY_RELEASE_DATE RUBY_REVISION RUBY_VERSION
__FILE__ __LINE__ __ENCODING__
]
IDENT_KIND = WordList.new(:ident).
add(RESERVED_WORDS, :reserved).
add(PREDEFINED_CONSTANTS, :predefined_constant)
KEYWORD_NEW_STATE = WordList.new(:initial).
add(%w[ def ], :def_expected).
add(%w[ undef ], :undef_expected).
add(%w[ alias ], :alias_expected).
add(%w[ class module ], :module_expected)
IDENT = 'ä'[/[[:alpha:]]/] == 'ä' ? /[[:alpha:]_][[:alnum:]_]*/ : /[^\W\d]\w*/
METHOD_NAME = / #{IDENT} [?!]? /ox
METHOD_NAME_OPERATOR = /
\*\*? # multiplication and power
| [-+~]@? # plus, minus, tilde with and without at sign
| [\/%&|^`] # division, modulo or format strings, and, or, xor, system
| \[\]=? # array getter and setter
| << | >> # append or shift left, shift right
| <=?>? | >=? # comparison, rocket operator
| ===? | =~ # simple equality, case equality, match
| ![~=@]? # negation with and without at sign, not-equal and not-match
/ox
METHOD_SUFFIX = / (?: [?!] | = (?![~>]|=(?!>)) ) /x
METHOD_NAME_EX = / #{IDENT} #{METHOD_SUFFIX}? | #{METHOD_NAME_OPERATOR} /ox
METHOD_AFTER_DOT = / #{IDENT} [?!]? | #{METHOD_NAME_OPERATOR} /ox
INSTANCE_VARIABLE = / @ #{IDENT} /ox
CLASS_VARIABLE = / @@ #{IDENT} /ox
OBJECT_VARIABLE = / @@? #{IDENT} /ox
GLOBAL_VARIABLE = / \$ (?: #{IDENT} | [1-9]\d* | 0\w* | [~&+`'=\/,;_.<>!@$?*":\\] | -[a-zA-Z_0-9] ) /ox
PREFIX_VARIABLE = / #{GLOBAL_VARIABLE} | #{OBJECT_VARIABLE} /ox
VARIABLE = / @?@? #{IDENT} | #{GLOBAL_VARIABLE} /ox
QUOTE_TO_TYPE = {
'`' => :shell,
'/'=> :regexp,
}
QUOTE_TO_TYPE.default = :string
REGEXP_MODIFIERS = /[mousenix]*/
DECIMAL = /\d+(?:_\d+)*/
OCTAL = /0_?[0-7]+(?:_[0-7]+)*/
HEXADECIMAL = /0x[0-9A-Fa-f]+(?:_[0-9A-Fa-f]+)*/
BINARY = /0b[01]+(?:_[01]+)*/
EXPONENT = / [eE] [+-]? #{DECIMAL} /ox
FLOAT_SUFFIX = / #{EXPONENT} | \. #{DECIMAL} #{EXPONENT}? /ox
FLOAT_OR_INT = / #{DECIMAL} (?: #{FLOAT_SUFFIX} () )? /ox
NUMERIC = / (?: (?=0) (?: #{OCTAL} | #{HEXADECIMAL} | #{BINARY} ) | #{FLOAT_OR_INT} ) /ox
SYMBOL = /
:
(?:
#{METHOD_NAME_EX}
| #{PREFIX_VARIABLE}
| ['"]
)
/ox
METHOD_NAME_OR_SYMBOL = / #{METHOD_NAME_EX} | #{SYMBOL} /ox
SIMPLE_ESCAPE = /
[abefnrstv]
| [0-7]{1,3}
| x[0-9A-Fa-f]{1,2}
| .
/mx
CONTROL_META_ESCAPE = /
(?: M-|C-|c )
(?: \\ (?: M-|C-|c ) )*
(?: [^\\] | \\ #{SIMPLE_ESCAPE} )?
/mox
ESCAPE = /
#{CONTROL_META_ESCAPE} | #{SIMPLE_ESCAPE}
/mox
CHARACTER = /
\?
(?:
[^\s\\]
| \\ #{ESCAPE}
)
/mox
# NOTE: This is not completely correct, but
# nobody needs heredoc delimiters ending with \n.
HEREDOC_OPEN = /
<< (-)? # $1 = float
(?:
( [A-Za-z_0-9]+ ) # $2 = delim
|
( ["'`\/] ) # $3 = quote, type
( [^\n]*? ) \3 # $4 = delim
)
/mx
RUBYDOC = /
=begin (?!\S)
.*?
(?: \Z | ^=end (?!\S) [^\n]* )
/mx
DATA = /
__END__$
.*?
(?: \Z | (?=^\#CODE) )
/mx
RUBYDOC_OR_DATA = / #{RUBYDOC} | #{DATA} /xo
# Checks for a valid value to follow. This enables
# value_expected in method calls without parentheses.
VALUE_FOLLOWS = /
(?>[ \t\f\v]+)
(?:
[%\/][^\s=]
| <<-?\S
| [-+] \d
| #{CHARACTER}
)
/ox
KEYWORDS_EXPECTING_VALUE = WordList.new.add(%w[
and end in or unless begin
defined? ensure redo super until
break do next rescue then
when case else for retry
while elsif if not return
yield
])
FANCY_STRING_START = / % ( [QqrsWwx] | (?![a-zA-Z0-9]) ) ([^a-zA-Z0-9]) /x
FANCY_STRING_KIND = Hash.new(:string).merge({
'r' => :regexp,
's' => :symbol,
'x' => :shell,
})
FANCY_STRING_INTERPRETED = Hash.new(true).merge({
'q' => false,
's' => false,
'w' => false,
})
end
end
end
|
