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#
# irb/completor.rb -
# $Release Version: 0.9$
# $Revision: 11708 $
# $Date: 2007-02-13 08:01:19 +0900 (Tue, 13 Feb 2007) $
# by Keiju ISHITSUKA(keiju@ishitsuka.com)
# From Original Idea of shugo@ruby-lang.org
#
require "readline"
module IRB
module InputCompletor
@RCS_ID='-$Id: completion.rb 11708 2007-02-12 23:01:19Z shyouhei $-'
ReservedWords = [
"BEGIN", "END",
"alias", "and",
"begin", "break",
"case", "class",
"def", "defined", "do",
"else", "elsif", "end", "ensure",
"false", "for",
"if", "in",
"module",
"next", "nil", "not",
"or",
"redo", "rescue", "retry", "return",
"self", "super",
"then", "true",
"undef", "unless", "until",
"when", "while",
"yield",
]
CompletionProc = proc { |input|
bind = IRB.current_context.workspace.binding
case input
when %r{^(/[^/]*/)\.([^.]*)$}
# Regexp
receiver = $1
message = Regexp.quote($2)
candidates = Regexp.instance_methods(true)
select_message(receiver, message, candidates)
when /^([^\]]*\])\.([^.]*)$/
# Array
receiver = $1
message = Regexp.quote($2)
candidates = Array.instance_methods(true)
select_message(receiver, message, candidates)
when /^([^\}]*\})\.([^.]*)$/
# Proc or Hash
receiver = $1
message = Regexp.quote($2)
candidates = Proc.instance_methods(true) | Hash.instance_methods(true)
select_message(receiver, message, candidates)
when /^(:[^:.]*)$/
# Symbol
Symbol.all_symbols.map(&:inspect).grep(/^#{$1}/)
when /^::([A-Z][^:\.\(]*)$/
# Absolute Constant or class methods
receiver = $1
candidates = Object.constants
candidates.grep(/^#{receiver}/).collect{|e| "::" + e}
when /^(((::)?[A-Z][^:.\(]*)+)::?([^:.]*)$/
# Constant or class methods
receiver = $1
message = Regexp.quote($4)
begin
candidates = eval("#{receiver}.constants | #{receiver}.methods", bind)
rescue Exception
candidates = []
end
candidates.grep(/^#{message}/).collect{|e| receiver + "::" + e}
when /^(:[^:.]+)\.([^.]*)$/
# Symbol
receiver = $1
message = Regexp.quote($2)
candidates = Symbol.instance_methods(true)
select_message(receiver, message, candidates)
when /^(-?(0[dbo])?[0-9_]+(\.[0-9_]+)?([eE]-?[0-9]+)?)\.([^.]*)$/
# Numeric
receiver = $1
message = Regexp.quote($5)
begin
candidates = eval(receiver, bind).methods
rescue Exception
candidates = []
end
select_message(receiver, message, candidates)
when /^(-?0x[0-9a-fA-F_]+)\.([^.]*)$/
# Numeric(0xFFFF)
receiver = $1
message = Regexp.quote($2)
begin
candidates = eval(receiver, bind).methods
rescue Exception
candidates = []
end
select_message(receiver, message, candidates)
when /^(\$[^.]*)$/
candidates = global_variables.grep(Regexp.new(Regexp.quote($1)))
when /^((\.?[^.]+)+)\.([^.]*)$/
# variable
receiver = $1
message = Regexp.quote($3)
gv = eval("global_variables", bind)
lv = eval("local_variables", bind)
cv = eval("self.class.constants", bind)
if (gv | lv | cv).include?(receiver)
# foo.func and foo is local var.
candidates = eval("#{receiver}.methods", bind)
elsif /^[A-Z]/ =~ receiver and /\./ !~ receiver
# Foo::Bar.func
begin
candidates = eval("#{receiver}.methods", bind)
rescue Exception
candidates = []
end
else
# func1.func2
candidates = []
ObjectSpace.each_object(Module){|m|
begin
name = m.name
rescue Exception
name = ""
end
next if name != "IRB::Context" and
/^(IRB|SLex|RubyLex|RubyToken)/ =~ name
candidates.concat m.instance_methods(false)
}
candidates.sort!
candidates.uniq!
end
select_message(receiver, message, candidates)
when /^\.([^.]*)$/
# unknown(maybe String)
receiver = ""
message = Regexp.quote($1)
candidates = String.instance_methods(true)
select_message(receiver, message, candidates)
else
candidates = eval("methods | private_methods | local_variables | self.class.constants", bind)
(candidates|ReservedWords).grep(/^#{Regexp.quote(input)}/)
end
}
Operators = ["%", "&", "*", "**", "+", "-", "/",
"<", "<<", "<=", "<=>", "==", "===", "=~", ">", ">=", ">>",
"[]", "[]=", "^",]
def self.select_message(receiver, message, candidates)
candidates.grep(/^#{message}/).collect do |e|
case e
when /^[a-zA-Z_]/
receiver + "." + e
when /^[0-9]/
when *Operators
#receiver + " " + e
end
end
end
end
end
if Readline.respond_to?("basic_word_break_characters=")
Readline.basic_word_break_characters= " \t\n\"\\'`><=;|&{("
end
Readline.completion_append_character = nil
Readline.completion_proc = IRB::InputCompletor::CompletionProc
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