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module CodeRay module Scanners
class PHP < Scanner
register_for :php
RESERVED_WORDS = [
'and', 'or', 'xor', '__FILE__', 'exception', '__LINE__', 'array', 'as', 'break', 'case',
'class', 'const', 'continue', 'declare', 'default',
'die', 'do', 'echo', 'else', 'elseif',
'empty', 'enddeclare', 'endfor', 'endforeach', 'endif',
'endswitch', 'endwhile', 'eval', 'exit', 'extends',
'for', 'foreach', 'function', 'global', 'if',
'include', 'include_once', 'isset', 'list', 'new',
'print', 'require', 'require_once', 'return', 'static',
'switch', 'unset', 'use', 'var', 'while',
'__FUNCTION__', '__CLASS__', '__METHOD__', 'final', 'php_user_filter',
'interface', 'implements', 'extends', 'public', 'private',
'protected', 'abstract', 'clone', 'try', 'catch',
'throw', 'cfunction', 'old_function'
]
PREDEFINED_CONSTANTS = [
'null', '$this', 'true', 'false'
]
IDENT_KIND = WordList.new(:ident).
add(RESERVED_WORDS, :reserved).
add(PREDEFINED_CONSTANTS, :pre_constant)
ESCAPE = / [\$\wrbfnrtv\n\\\/'"] | x[a-fA-F0-9]{1,2} | [0-7]{1,3} /x
UNICODE_ESCAPE = / u[a-fA-F0-9]{4} | U[a-fA-F0-9]{8} /x
def scan_tokens tokens, options
state = :waiting_php
string_type = nil
regexp_allowed = true
until eos?
kind = :error
match = nil
if state == :initial
if scan(/ \s+ | \\\n /x)
kind = :space
elsif scan(/\?>/)
kind = :char
state = :waiting_php
elsif scan(%r{ (//|\#) [^\n\\]* (?: \\. [^\n\\]* )* | /\* (?: .*? \*/ | .* ) }mx)
kind = :comment
regexp_allowed = false
elsif match = scan(/ \# \s* if \s* 0 /x)
match << scan_until(/ ^\# (?:elif|else|endif) .*? $ | \z /xm) unless eos?
kind = :comment
regexp_allowed = false
elsif regexp_allowed and scan(/\//)
tokens << [:open, :regexp]
state = :regex
kind = :delimiter
elsif scan(/ [-+*\/=<>?:;,!&^|()\[\]{}~%] | \.(?!\d) /x)
kind = :operator
regexp_allowed=true
elsif match = scan(/ [$@A-Za-z_][A-Za-z_0-9]* /x)
kind = IDENT_KIND[match]
regexp_allowed=false
elsif match = scan(/["']/)
tokens << [:open, :string]
string_type = matched
state = :string
kind = :delimiter
elsif scan(/0[xX][0-9A-Fa-f]+/)
kind = :hex
regexp_allowed=false
elsif scan(/(?:0[0-7]+)(?![89.eEfF])/)
kind = :oct
regexp_allowed=false
elsif scan(/(?:\d+)(?![.eEfF])/)
kind = :integer
regexp_allowed=false
elsif scan(/\d[fF]?|\d*\.\d+(?:[eE][+-]?\d+)?[fF]?|\d+[eE][+-]?\d+[fF]?/)
kind = :float
regexp_allowed=false
else
getch
end
elsif state == :regex
if scan(/[^\\\/]+/)
kind = :content
elsif scan(/\\\/|\\/)
kind = :content
elsif scan(/\//)
tokens << [matched, :delimiter]
tokens << [:close, :regexp]
state = :initial
next
else
getch
kind = :content
end
elsif state == :string
if scan(/[^\\"']+/)
kind = :content
elsif scan(/["']/)
if string_type==matched
tokens << [matched, :delimiter]
tokens << [:close, :string]
state = :initial
string_type=nil
next
else
kind = :content
end
elsif scan(/ \\ (?: \S ) /mox)
kind = :char
elsif scan(/ \\ | $ /x)
kind = :error
state = :initial
else
raise "else case \" reached; %p not handled." % peek(1), tokens
end
elsif state == :waiting_php
if scan(/<\?php/m)
kind = :char
state = :initial
elsif scan(/[^<]+/)
kind = :comment
else
kind = :comment
getch
end
else
raise 'else-case reached', tokens
end
match ||= matched
tokens << [match, kind]
end
tokens
end
end
end end
|
