1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
|
#
# irb/completor.rb -
# $Release Version: 0.9$
# $Revision$
# $Date$
# by Keiju ISHITSUKA(keiju@ishitsuka.com)
# From Original Idea of shugo@ruby-lang.org
#
require "readline"
module IRB
module InputCompletor
@RCS_ID='-$Id$-'
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.conf[:MAIN_CONTEXT].workspace.binding
# puts "input: #{input}"
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($4)
begin
candidates = eval(receiver, bind).methods
rescue Exception
candidates
end
select_message(receiver, message, candidates)
when /^(\$[^.]*)$/
candidates = global_variables.grep(Regexp.new(Regexp.quote($1)))
# when /^(\$?(\.?[^.]+)+)\.([^.]*)$/
when /^((\.?[^.]+)+)\.([^.]*)$/
# variable
receiver = $1
message = Regexp.quote($3)
gv = eval("global_variables", bind)
lv = eval("local_variables", bind)
cv = eval("self.class.constants", bind)
if (gv | lv | cv).include?(receiver)
# foo.func and foo is local var.
candidates = eval("#{receiver}.methods", bind)
elsif /^[A-Z]/ =~ receiver and /\./ !~ receiver
# Foo::Bar.func
begin
candidates = eval("#{receiver}.methods", bind)
rescue Exception
candidates = []
end
else
# func1.func2
candidates = []
ObjectSpace.each_object(Module){|m|
next if m.name != "IRB::Context" and
/^(IRB|SLex|RubyLex|RubyToken)/ =~ m.name
candidates.concat m.instance_methods(false)
}
candidates.sort!
candidates.uniq!
end
select_message(receiver, message, candidates)
when /^\.([^.]*)$/
# 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
|
