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# based on irb/completion.rb
module Kz
module RubyCompletion
RESERVED_WORDS = [
"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",
]
module_function
def complete(input, bind)
target = "#{input} DUMMY".split(/[\s><=;|&\{\(]+/)[-2]
prefix = input[0...(input.rindex(target))]
candidates = collect_completion_candidates(target, bind)
candidates.compact.sort.collect do |message|
prefix + message
end
end
def collect_completion_candidates(input, bind)
case input
when /^(\/[^\/]*\/)\.([^.]*)$/
# 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
if Symbol.respond_to?(:all_symbols)
sym = $1
candidates = Symbol.all_symbols.collect{|s| ":" + s.id2name}
candidates.grep(/^#{sym}/)
else
[]
end
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($2)
candidates = Symbol.instance_methods(true)
select_message(receiver, message, candidates)
when /^([0-9_]+(\.[0-9_]+)?(e[0-9]+)?)\.([^.]*)$/
# Numeric
receiver = $1
message = Regexp.quote($4)
begin
candidates = eval(receiver, bind).methods
rescue Exception
[]
end
select_message(receiver, message, candidates)
when /^((\"|\').*\2)\.([^.]*)$/
# String
receiver = $1
message = Regexp.quote($3)
candidates = String.instance_methods(true)
select_message(receiver, message, candidates)
when /^(\$[^.]*)$/
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 = []
end
select_message(receiver, message, candidates)
else
methods_exp = "methods | private_methods | local_variables"
constants_exp = "self.class.constants"
exp = "#{methods_exp} | #{constants_exp}"
candidates = eval(exp, bind) | Object.constants
(candidates | RESERVED_WORDS).grep(/^#{Regexp.quote(input)}/)
end
end
OPERATORS = [
"%", "&", "*", "**", "+", "-", "/",
"<", "<<", "<=", "<=>", "==", "===", "=~", ">", ">=", ">>",
"[]", "[]=", "^",
]
def 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
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