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|
class Regexp
def |(other)
Regexp.union(self, other)
end
def +(other)
/#{self}#{other}/
end
end
module CodeRay
module Scanners
load :html
class PHP < Scanner
register_for :php
def setup
@html_scanner = CodeRay.scanner :html, :tokens => @tokens, :keep_tokens => true, :keep_state => true
end
def reset_instance
super
@html_scanner.reset
end
module Words
ControlKeywords = %w!
if else elseif while do for switch case default declare foreach as
endif endwhile endfor endforeach endswitch enddeclare return break
continue exit die try catch throw
!
OtherKeywords = %w!
function class extends implements instanceof parent self var const
private public protected static abstract final global new echo include
require include_once require_once eval print use unset isset empty
interface list array clone null true false
!
SpecialConstants = %w! __LINE__ __FILE__ __CLASS__
__METHOD__ __FUNCTION__
!
IdentKinds = WordList.new(:ident).
add(ControlKeywords, :reserved).
add(OtherKeywords, :pre_type).
add(SpecialConstants, :pre_constant)
end
module RE
def self.build_alternatives(array)
Regexp.new(array.map { |s| Regexp.escape(s) }.join('|') , Regexp::IGNORECASE)
end
PHPStart = /
<script language="php"> |
<script language='php'> |
<\?php |
<\?(?!xml) |
<%
/xi
PHPEnd = %r!
</script> |
\?> |
%>
!xi
IChar = /[a-z0-9_\x80-\xFF]/i
IStart = /[a-z_\x80-\xFF]/i
Identifier = /#{IStart}#{IChar}*/
Variable = /\$#{Identifier}/
Typecasts = build_alternatives %w!
float double real int integer bool boolean string array object null
!.map{|s| "(#{s})"}
OneLineComment1 = %r!//.*?(?=#{PHPEnd}|$)!
OneLineComment2 = %r!#.*?(?=#{PHPEnd}|$)!
OneLineComment = OneLineComment1 | OneLineComment2
HereDoc = /<<</ + Identifier
binops = %w!
+ - * / << >> & | ^ . %
!
ComparisionOperator = build_alternatives %w$
=== !== == != <= >=
$
IncDecOperator = build_alternatives %w! ++ -- !
BinaryOperator = build_alternatives binops
AssignOperator = build_alternatives binops.map {|s| "${s}=" }
LogicalOperator = build_alternatives %w! and or xor not !
ObjectOperator = build_alternatives %w! -> :: !
OtherOperator = build_alternatives %w$ => = ? : [ ] ( ) ; , ~ ! @ > <$
Operator = ComparisionOperator | IncDecOperator | LogicalOperator |
ObjectOperator | AssignOperator | BinaryOperator | OtherOperator
S = /\s+/
Integer = /-?0x[0-9a-fA-F]/ | /-?\d+/
Float = /-?(?:\d+\.\d*|\d*\.\d+)(?:e[+-]\d+)?/
end
def scan_tokens tokens, options
states = [:php, :html]
heredocdelim = nil
until eos?
match = nil
kind = nil
case states.last
when :html
if scan RE::PHPStart
kind = :delimiter
states.pop
else
match = scan_until(/(?=#{RE::PHPStart})/o) || scan_until(/\z/)
@html_scanner.tokenize match if not match.empty?
kind = :space
match = ''
end
when :php
if scan RE::PHPEnd
kind = :delimiter
states.push :html
elsif scan RE::S
kind = :space
elsif scan /\/\*/
kind = :comment
states.push :mlcomment
elsif scan RE::OneLineComment
kind = :comment
elsif match = scan(RE::Identifier)
kind = Words::IdentKinds[match]
if kind == :ident and check(/:(?!:)/) and tokens[-2][0] == 'case'
# match << scan(/:/)
kind = :label
elsif kind == :ident and match =~ /^[A-Z]/
kind = :constant
end
elsif scan RE::Integer
kind = :integer
elsif scan RE::Float
kind = :float
elsif scan /'/
kind = :delimiter
states.push :sqstring
elsif scan /"/
kind = :delimiter
states.push :dqstring
elsif match = scan(RE::HereDoc)
heredocdelim = match[RE::Identifier]
kind = :delimiter
states.push = :heredocstring
elsif scan RE::Variable
kind = :local_variable
elsif scan /\{/
kind = :operator
states.push :php
elsif scan /\}/
if states.length == 1
kind = :error
else
kind = :operator
states.pop
end
elsif scan RE::Operator
kind = :operator
else
getch
kind = :error
end
when :mlcomment
if scan /(?:[^\n\r\f*]|\*(?!\/))+/
kind = :comment
elsif scan /\*\//
kind = :comment
states.pop
elsif scan /[\r\n\f]+/
kind = :space
end
when :sqstring
if scan /[^\r\n\f'\\]+/
kind = :string
elsif match = scan(/\\\\|\\'/)
kind = :char
elsif scan /\\/
kind = :string
elsif scan /[\r\n\f ]+/
kind = :space
elsif scan /'/
kind = :delimiter
states.pop
end
when :dqstring
#todo: $foo[bar] kind of stuff
if scan /[^\r\n\f"${\\]+/
kind = :string
elsif scan /\\x[a-fA-F]{2}/
kind = :char
elsif scan /\\\d{3}/
kind = :char
elsif scan /\\["\\abcfnrtyv]/
kind = :char
elsif scan /\\/
kind = :string
elsif scan /[\r\n\f]+/
kind = :space
elsif match = scan(RE::Variable)
kind = :local_variable
if check(/\[#{RE::Identifier}\]/)
match << scan(/\[#{RE::Identifier}\]/)
elsif check(/\[/)
match << scan(/\[#{RE::Identifier}?/)
kind = :error
elsif check(/->#{RE::Identifier}/)
match << scan(/->#{RE::Identifier}/)
end
elsif scan /\{/
if check(/\$/)
kind = :operator
states.push :php
else
kind = :string
end
match = '{'
elsif scan /\$\{#{RE::Identifier}\}/
kind = :local_variable
elsif scan /\$/
kind = :string
elsif scan /"/
kind = :delimiter
states.pop
end
else
raise "Unknown state!"
end
match ||= matched
if $DEBUG and not kind
raise_inspect 'Error token %p in line %d' %
[[match, kind], line], tokens
end
raise_inspect 'Empty token', tokens unless match
tokens << [match, kind]
end
tokens
end
end
end
end
|
