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
|
# $Id$
require 'stringio'
require 'optparse'
def main
mode = nil
ids1src = nil
ids2src = nil
template = nil
output = nil
parser = @parser = OptionParser.new
parser.banner = "Usage: #{File.basename($0)} --mode=MODE [--ids1src=PATH] [--ids2src=PATH] [--template=PATH] [--output=PATH]"
parser.on('--mode=MODE', '"ripper/core" or "eventids1".') {|m|
mode = m
}
parser.on('--ids1src=PATH', 'A source file of event-IDs 1 (parse.y).') {|path|
ids1src = path
}
parser.on('--ids2src=PATH', 'A source file of event-IDs 2 (eventids2.c).') {|path|
ids2src = path
}
parser.on('--template=PATH', 'A template file of ripper/core.rb.') {|path|
template = path
}
parser.on('--output=PATH', 'An output file.') {|path|
output = path
}
parser.on('--help', 'Prints this message and quit.') {
puts parser.help
exit 0
}
begin
parser.parse!
rescue OptionParser::ParseError => err
usage err.message
end
usage 'no mode given' unless mode
case mode
when 'ripper/core', 'ripper/core.rb'
usage 'no --ids1src' unless ids1src
usage 'no --ids2src' unless ids2src
usage 'no --template' unless template
ids1 = read_ids1(ids1src)
ids2 = read_ids2(ids2src)
unless (ids1.keys & ids2).empty?
$stderr.puts "event crash: #{(ids1.keys & ids2).join(' ')}"
exit 1
end
result = generate_ripper_core(template, ids1, ids2)
when 'eventids1', 'eventids1.c'
usage 'no --ids1src' unless ids1src
result = generate_eventids1(read_ids1(ids1src))
end
if output
File.open(output, 'w') {|f|
f.write result
}
else
puts result
end
end
def usage(msg)
$stderr.puts msg
$stderr.puts @parser.help
exit 1
end
def generate_ripper_core(template, ids1, ids2)
f = StringIO.new
f.print <<header
# This file is automatically generated from #{File.basename(template)} and parse.y.
# DO NOT MODIFY!!!!!!
header
File.foreach(template) do |line|
case line
when /\A\#include ids1/
comma = ''
ids1.each do |id, arity|
f.print comma; comma = ",\n"
f.print " #{id.intern.inspect} => #{arity}"
end
f.puts
when /\A\#include ids2/
comma = ''
ids2.each do |id|
f.print comma; comma = ",\n"
f.print " #{id.intern.inspect} => 1"
end
f.puts
when /\A\#include handlers1/
ids1.each do |id, arity|
f.puts
f.puts " def on_#{id}#{paramdecl(arity)}"
f.puts " #{arity == 0 ? 'nil' : 'a'}"
f.puts " end"
end
when /\A\#include handlers2/
ids2.each do |id|
f.puts
f.puts " def on_#{id}(token)"
f.puts " token"
f.puts " end"
end
when /\A\#include (.*)/
raise "unknown operation: #include #{$1}"
else
f.print line
end
end
f.string
end
def paramdecl(n)
return '' if n == 0
'(' + ('a'..'z').to_a[0, n].join(', ') + ')'
end
def generate_eventids1(ids)
f = StringIO.new
ids.each do |id, arity|
f.puts "static ID ripper_id_#{id};"
end
f.puts
f.puts 'static void'
f.puts 'ripper_init_eventids1()'
f.puts '{'
ids.each do |id, arity|
f.puts %Q[ ripper_id_#{id} = rb_intern("on_#{id}");]
end
f.puts '}'
f.string
end
def read_ids1(path)
h = read_ids1_with_locations(path)
check_arity h
h.map {|event, list| [event, list.first[1]] }\
.sort_by {|event, arity| event.to_s }
end
def check_arity(h)
invalid = false
h.each do |event, list|
unless list.map {|line, arity| arity }.uniq.size == 1
invalid = true
$stderr.puts "arity crash [event=#{event}]: #{
list.map {|line,a| "#{line}:#{a}" }.join(', ')
}"
end
end
exit 1 if invalid
end
def read_ids1_with_locations(path)
h = {}
File.open(path) {|f|
f.each do |line|
next if /\A\#\s*define\s+s?dispatch/ =~ line
next if /ripper_dispatch/ =~ line
line.scan(/dispatch(\d)\((\w+)/) do |arity, event|
(h[event] ||= []).push [f.lineno, arity]
end
end
}
h
end
def read_ids2(path)
File.open(path) {|f|
return f.read.scan(/ripper_id_(\w+)/).flatten.uniq.sort
}
end
main
|
