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
|
#line 2 "cdefs.nw"
global decls_ok
procedure main(args)
decls_ok := !args == "-decl"
go()
end
#line 8 "cdefs.nw"
global typespecs, storespecs, typequals, otherspecs, structlike
procedure postpass(name, arg)
local tok, stat
static kind
initial {
kind := "bogus"
storespecs := set(["typedef", "extern", "static", "auto", "register"])
typespecs := set(["void", "char", "float", "short", "signed",
"int", "double", "long", "unsigned"])
typequals := set(["const", "volatile"])
otherspecs := storespecs ++ typequals
structlike := set(["struct", "union", "enum"])
}
case name of {
"begin" : arg ? kind := tab(upto(' ')|0)
"text" : arg ? {
if kind ~== "code" then return
if any(' \t') then return
if (="#define", tab(many(' \t'))) then return wd(c_ident_token())
if find("dclproto") then return
if ="}" then {
if c_ident_token() == "while" then fail # don't get tripped by do { ... } while
#line 61 "cdefs.nw"
while x := declarator() do {
wd(x, stat)
if c_token() == "," then &null else return
}
#line 31 "cdefs.nw"
} else {
specifier_count := 0
stat := &null # haven't seen static yet
seenType := &null
while (
(/decls_ok & c_ident_token() == "extern", return) |
(member(typespecs, c_ident_token()), seenType := 1) | # swallow type
(member(otherspecs, tok := c_ident_token()),
stat := look_for_static(stat, tok)) | # swallow a specifier
(member(structlike, c_ident_token()), # struct with optional tag
c_ident_token() | &null) |
(/seenType, any(&ucase, c_ident_token()), seenType := 1)
# assume a typedef'd type, skip
) do
specifier_count +:= 1
## write(&errout, "skipped ", specifier_count, " specifiers")
if f := scan_function() then
if /decls_ok & c_token() == (";"|",") then fail else {
## write(&errout, "function ", image(f), " followed by ",
## image(c_token()) | "<EOL>")
wd(f, stat)
return
}
if specifier_count > 0 then {
#line 61 "cdefs.nw"
while x := declarator() do {
wd(x, stat)
if c_token() == "," then &null else return
}
#line 54 "cdefs.nw"
}
}
}
}
return
end
#line 66 "cdefs.nw"
procedure wd(x, stat)
static reserved
initial reserved := set([
"asm", "auto", "break", "case", "char", "const", "continue",
"default", "double", "do", "else", "enum", "extern", "float", "for",
"goto", "if", "int", "long", "register", "return", "short",
"signed", "sizeof", "static", "struct", "switch", "typedef", "union",
"unsigned", "void", "volatile", "while"])
if member(reserved, x) then return
return writedefn(x, stat)
end
procedure prepass(name, arg)
return
end
procedure c_ident_token()
static alpha, alnum
initial { alpha := '_' ++ &letters; alnum := alpha ++ &digits }
tab(many(' \t'))
if any(alpha) then suspend tab(many(alnum))
end
procedure c_token()
static alpha, alnum
initial { alpha := '_' ++ &letters; alnum := alpha ++ &digits }
tab(many(' \t'))
if any(alpha) then suspend tab(many(alnum)) else suspend move(1)
end
procedure scan_function()
(f := c_ident_token(),
#write(&errout, " try function ", image(f)),
tab(many(' \t')) | &null,
any('('),
*tab(bal()) > 0 |
(="(", *tab(bal(',', '[{(', ')}]')) > 0, =",", optwhite(), pos(0)),
#write(&errout, " caught function trailing ", image(&subject[&pos:0])),
suspend f
)
end
procedure optwhite()
suspend tab(many(' \t')) | ""
end
procedure declarator()
while c_token() == "*" do
while member(typequals, c_token())
(c_token() == "(", d := declarator(), c_token() == ")") |
(d := c_ident_token()) |
fail
while c_token() == ("[", "(") do
(tab(bal('])','[(',')]')), c_token())
return d
end
#line 123 "cdefs.nw"
procedure look_for_static(stat, tok)
return (tok == "static") | stat
end
#line 127 "cdefs.nw"
procedure rcsinfo ()
return "$Id: cdefs.nw,v 1.19 2008/10/06 01:03:05 nr Exp nr $" ||
"$Name: v2_12 $"
end
#line 1 "defns.nw"
procedure go()
local line
while line := read() do {
apply(prepass, line)
write(line)
if match("@fatal ", line) then exit(1)
apply(postpass, line)
}
end
procedure apply(pass, line)
line ? (="@" & pass(tab(upto(' ')|0), if =" " then tab(0) else &null))
end
#line 18 "defns.nw"
procedure writedefn(defn, locl)
static indextext
initial indextext := ""
if /defn then
*indextext > 0 &
#line 31 "defns.nw"
{ # write("@index nl") # don't!
indextext := ""
}
#line 23 "defns.nw"
else {
if *indextext + *defn > 65 then
#line 31 "defns.nw"
{ # write("@index nl") # don't!
indextext := ""
}
#line 25 "defns.nw"
write(if \locl then "@index localdefn " else "@index defn ", defn)
indextext ||:= " " || defn
}
return
end
#line 35 "defns.nw"
procedure rcsinfo_too ()
return "$Id: defns.nw,v 1.18 2008/10/06 01:03:05 nr Exp nr $" ||
"$Name: v2_12 $"
end
|