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module CodeRay module Scanners
class BASH < Scanner
register_for :bash
RESERVED_WORDS = %w{
if elif fi until while done for do case in esac select
break else then shift function
}
PREDEFINED_CONSTANTS = %w{
$CDPATH $HOME $IFS $MAIL $MAILPATH $OPTARG $LINENO $LINES
$OPTIND $PATH $PS1 $PS2 $BASH $BASH_ARGCBASH_ARGV
$BASH_COMMAND $BASH_ENV $BASH_EXECUTION_STRING
$BASH_LINENO $BASH_REMATCH $BASH_SOURCE $COLUMNS
$BASH_SUBSHELL $BASH_VERSINFO $BASH_VERSION $OSTYPE
$COMP_CWORD $COMP_LINE $COMP_POINT $COMP_WORDBREAKS
$COMP_WORDS $COMPREPLY $DIRSTACK $EMACS $EUID $OTPERR
$FCEDIT $FIGNORE $FUNCNAME $GLOBIGNORE $GROUPS $OLDPWD
$histchars $HISTCMD $HISTCONTROL $HISTFILE $MACHTYPE
$HISTFILESIZE $HISTIGNORE $HISTSIZE $HISTTIMEFOMAT
$HOSTFILE $HOSTNAME $HOSTTYPE $IGNOREEOF $INPUTRC $LANG
$LC_ALL $LC_COLLATE $LC_CTYPE $LC_MESSAGES $LC_NUMERIC
$PIPESTATUS $POSIXLY_CORRECT $MAILCHECK $PPID $PS3 $PS4
$PROMPT_COMMAND $PWD $RANDOM $REPLY $SECONDS $SHELL
$SHELLOPTS $SHLVL $TIMEFORMAT $TMOUT $TMPDIR $UID
}
BUILTIN = %w{
cd continue eval exec true false suspend unalias
exit export getopts hash pwd readonly return test
times trap umask unset alias bind builtin caller
command declare echo enable help let local logout
printf read shopt source type typeset ulimit
set dirs popd pushd bg fg jobs kill wait disown
}
IDENT_KIND = WordList.new(:ident).
add(RESERVED_WORDS, :reserved).
# add(PREDEFINED_CONSTANTS, :pre_constant).
add(BUILTIN, :method)
ESCAPE = / [\$rtnb\n\\'"] /x
# UNICODE_ESCAPE = / u[a-fA-F0-9]{4} | U[a-fA-F0-9]{8} /x
VARIABLE_SIMPLE = /\$[a-zA-Z]\w*/
VARIABLE_EXPRESSION = /\$\{[!#]?[a-zA-Z].*?\}/
def scan_tokens tokens, options
state = :initial
string_type = nil
until eos?
kind = nil
match = nil
if state == :initial
if scan(/ \s+ | \\\n /x)
kind = :space
elsif match = scan(/\#!.*/) # until eof
kind = :preprocessor
elsif scan(/\#.*/)
kind = :comment
elsif scan(/ [-+*\/=<>?:;,!&^|()\[\]{}~%] | \.(?!\d) /x)
kind = :operator
elsif match = scan(/[1-9][0-9]*/)
kind = :number
elsif scan(/ \\ (?: \S ) /mox)
kind = :char
elsif scan(/(#{VARIABLE_SIMPLE}|#{VARIABLE_EXPRESSION})/)
kind = :instance_variable
elsif match = scan(/ [$@A-Za-z_][A-Za-z_0-9]* /x)
kind = IDENT_KIND[match]
elsif match = scan(/["']/)
tokens << [:open, :string]
string_type = matched
state = :string
kind = :delimiter
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
kind = :content
state = :initial
else
raise "else case \" reached; %p not handled." % peek(1), tokens
end
else
raise 'else-case reached', tokens
end
match ||= matched
tokens << [match, kind]
end
tokens
end
end
end end
|
