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
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
|
<%
# This file is interpreted by $(BASERUBY) and miniruby.
# $(BASERUBY) is used for miniprelude.c.
# miniruby is used for prelude.c.
# Since $(BASERUBY) may be older than Ruby 1.9,
# Ruby 1.9 feature should not be used.
require_relative '../tool/ruby_vm/helpers/c_escape'
class Prelude
include RubyVM::CEscape
LINE_LIMIT = 509 # by C89
def prelude_base(filename)
filename.chomp(".rb")
end
def prelude_name(filename)
"<internal:" + prelude_base(filename) + ">"
end
def initialize(output, preludes, vpath)
@output = output
@vpath = vpath
@prelude_count = 0
@builtin_count = 0
@preludes = {}
@mains = preludes.map do |filename|
if prelude = filename.end_with?("golf_prelude.rb")
@prelude_count += 1
else
@builtin_count += 1
end
translate(filename, (filename unless prelude))[0]
end
@preludes.delete_if {|_, (_, _, lines, sub)| sub && lines.empty?}
end
def translate(filename, sub = false)
idx = @preludes[filename]
return idx if idx
lines = []
start_line = nil
lineno = 0
result = [@preludes.size, @vpath.strip(filename), lines, sub]
@vpath.foreach(filename) do |line|
if line.respond_to?(:force_encoding)
enc = line.encoding
line.force_encoding("ASCII-8BIT")
end
line.rstrip!
lineno += 1
@preludes[filename] ||= result
comment = ($1 || '' if line.sub!(/(?:^|\s+)\#(?!\{)(?:$|(?:[#\s]|(?=\W))(.*))/, ''))
if !line.empty? or start_line
line << "\n"
start_line ||= lineno
end
if line.size > LINE_LIMIT
raise "#{filename}:#{lines.size+1}: too long line"
end
line.sub!(/require(_relative)?\s*\(?\s*(["'])(.*?)(?:\.rb)?\2\)?/) do
orig, rel, path = $&, $2, $3
if rel
path = File.join(File.dirname(filename), path)
nil while path.gsub!(%r'(\A|/)(?!\.\.?/)[^/]+/\.\.(?:/|\z)', '')
end
path = translate("#{path}.rb", true) rescue nil
if path
# This library will be loaded before this,
# the order cannot be preserved
comment = "#{orig} #{comment}".rstrip
""
else
orig
end
end
comment.force_encoding(enc) if enc and comment
lines << [line, comment]
end
result << (start_line || 1)
result
end
end
Prelude.new(output, ARGV, vpath).instance_eval do
-%>
/* -*-c-*-
THIS FILE WAS AUTOGENERATED BY template/prelude.c.tmpl. DO NOT EDIT.
sources: <%= @preludes.map {|n,*| prelude_base(n)}.join(', ') %><%=%>
*/
%unless @preludes.empty?
#include "internal.h"
#include "internal/ruby_parser.h"
#include "internal/warnings.h"
#include "iseq.h"
#include "ruby/ruby.h"
#include "vm_core.h"
COMPILER_WARNING_PUSH
#if __has_warning("-Wstring-concatenation")
COMPILER_WARNING_IGNORED(-Wstring-concatenation)
#endif
% preludes = @preludes.values.sort
% preludes.each {|i, prelude, lines, sub|
% name = prelude_name(*prelude)
static const char prelude_name<%=i%><%=%>[] = <%=rstring2cstr(name)%>;
static const struct {
% size = beg = 0
% lines.each_with_index {|(line, comment), n|
% if size + line.size < Prelude::LINE_LIMIT
% size += line.size
% next
% end
char L<%=beg%><%=%>[<%=size%><%=%>]; /* <%=beg+1%>..<%=n%> */
% size = line.size
% beg = n
% }
% if size > 0
char L<%=beg%><%=%>[<%=size%><%=%>]; /* <%=beg+1%>..<%=lines.size+1%> */
% end
} prelude_code<%=i%><%=%> = {
% size = 0
#line 1 <%=rstring2cstr(prelude)%>
% lines.each_with_index {|(line, comment), n|
% if size + line.size >= Prelude::LINE_LIMIT
% size = 0
,
#line <%=n+1%> <%=rstring2cstr(prelude)%>
% end
% size += line.size
<%=rstring2cstr(line)%><%if comment%><%=commentify(comment)%><%end%>
% }
#line <%=_erbout.count("\n")+2%> "<%=@output%>"
};
% }
COMPILER_WARNING_POP
% unless preludes.empty?
#define PRELUDE_NAME(n) rb_usascii_str_new_static(prelude_name##n, sizeof(prelude_name##n)-1)
#define PRELUDE_CODE(n) rb_utf8_str_new_static(prelude_code##n.L0, sizeof(prelude_code##n))
static rb_ast_t *
prelude_ast(VALUE name, VALUE code, int line)
{
rb_ast_t *ast = rb_parser_compile_string_path(rb_parser_new(), name, code, line);
if (!ast || !ast->body.root) {
if (ast) rb_ast_dispose(ast);
rb_exc_raise(rb_errinfo());
}
return ast;
}
% end
% if @builtin_count > 0
#define PRELUDE_AST(n, name_str, start_line) \
(((sizeof(prelude_name<%='##'%><%=%>n) - prefix_len - 2) == namelen) && \
(strncmp(prelude_name<%='##'%><%=%>n + prefix_len, feature_name, namelen) == 0) ? \
prelude_ast((name_str) = PRELUDE_NAME(n), PRELUDE_CODE(n), start_line) : 0)
rb_ast_t *
rb_builtin_ast(const char *feature_name, VALUE *name_str)
{
const size_t prefix_len = rb_strlen_lit("<internal:");
size_t namelen = strlen(feature_name);
rb_ast_t *ast = 0;
% @preludes.each_value do |i, prelude, lines, sub, start_line|
% if sub
if ((ast = PRELUDE_AST(<%=i%><%=%>, *name_str, <%=start_line%>)) != 0) return ast;
% end
% end
return ast;
}
% end
% if @prelude_count > 0
COMPILER_WARNING_PUSH
#if GCC_VERSION_SINCE(4, 2, 0)
COMPILER_WARNING_ERROR(-Wmissing-field-initializers)
#endif
static void
prelude_eval(VALUE code, VALUE name, int line)
{
static const rb_compile_option_t optimization = {
TRUE, /* unsigned int inline_const_cache; */
TRUE, /* unsigned int peephole_optimization; */
FALSE,/* unsigned int tailcall_optimization; */
TRUE, /* unsigned int specialized_instruction; */
TRUE, /* unsigned int operands_unification; */
TRUE, /* unsigned int instructions_unification; */
TRUE, /* unsigned int frozen_string_literal; */
FALSE, /* unsigned int debug_frozen_string_literal; */
FALSE, /* unsigned int coverage_enabled; */
0, /* int debug_level; */
};
rb_ast_t *ast = prelude_ast(name, code, line);
rb_iseq_eval(rb_iseq_new_with_opt(&ast->body, name, name, Qnil, line,
NULL, 0, ISEQ_TYPE_TOP, &optimization));
rb_ast_dispose(ast);
}
COMPILER_WARNING_POP
% end
%end
% init_name = @output && @output[/\w+(?=_prelude.c\b)/] || 'prelude'
void
Init_<%=init_name%><%=%>(void)
{
%unless @prelude_count.zero?
% preludes.each do |i, prelude, lines, sub, start_line|
% next if sub
prelude_eval(PRELUDE_CODE(<%=i%><%=%>), PRELUDE_NAME(<%=i%><%=%>), <%=start_line%><%=%>);
% end
#if 0
% preludes.length.times {|i|
printf("%.*s", (int)sizeof(prelude_code<%=i%><%=%>), prelude_code<%=i%><%=%>.L0);
% }
#endif
%end
}
<%end -%>
|
