about summary refs log tree commit diff
path: root/Src/makepro.awk
blob: 86117fcc181f1def046f164d69ed74ff334b1a59 (plain) (blame)
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
#
# makepro.awk - generate prototype lists
#

BEGIN {
    aborting = 0

    # arg 1 is the name of the file to process
    # arg 2 is the name of the subdirectory it is in
    if(ARGC != 3) {
	aborting = 1
	exit 1
    }
    name = ARGV[1]
    gsub(/^.*\//, "", name)
    gsub(/\.c$/, "", name)
    name = ARGV[2] "_" name
    gsub(/\//, "_", name)
    ARGC--

    # `locals' is a list of local declarations, built up while global
    # declarations are output.
    locals = ""

    printf "#ifndef have_%s_globals\n", name
    printf "#define have_%s_globals\n", name
    printf "\n"
}

# all relevant declarations are preceded by "/**/" on a line by itself

/^\/\*\*\/$/ {
    # The declaration is on following lines.  The interesting part might
    # be terminated by a `{' (`int foo(void) { }' or `int bar[] = {')
    # or `;' (`int x;').
    line = ""
    isfunc = 0
    while(1) {
	if(getline <= 0) {
	    aborting = 1
	    exit 1
	}
	gsub(/\t/, " ")
	line = line " " $0
	gsub(/\/\*([^*]|\*+[^*\/])*\*+\//, " ", line)
	if(line ~ /\/\*/)
	    continue
	# If it is a function definition, note so.
	if(line ~ /\) *[{].*$/) #}
	    isfunc = 1
	if(sub(/ *[{;].*$/, "", line)) #}
	    break
    }
    # Put spaces around each identifier.
    while(match(line, /[^_0-9A-Za-z ][_0-9A-Za-z]/) ||
	    match(line, /[_0-9A-Za-z][^_0-9A-Za-z ]/))
	line = substr(line, 1, RSTART) " " substr(line, RSTART+1)
    # Separate declarations into a type and a list of declarators.
    # In each declarator, "@{" and "@}" are used in place of parens to
    # mark function parameter lists, and "@!" is used in place of commas
    # in parameter lists.  "@<" and "@>" are used in place of
    # non-parameter list parens.
    gsub(/ _ +/, " _ ", line)
    while(1) {
	if(isfunc && match(line, /\([^()]*\)$/))
	    line = substr(line, 1, RSTART-1) " _ (" substr(line, RSTART) ")"
	else if(match(line, / _ \(\([^,()]*,/))
	    line = substr(line, 1, RSTART+RLENGTH-2) "@!" substr(line, RSTART+RLENGTH)
	else if(match(line, / _ \(\([^,()]*\)\)/))
	    line = substr(line, 1, RSTART-1) "@{" substr(line, RSTART+5, RLENGTH-7) "@}" substr(line, RSTART+RLENGTH)
	else if(match(line, /\([^,()]*\)/))
	    line = substr(line, 1, RSTART-1) "@<" substr(line, RSTART+1, RLENGTH-2) "@>" substr(line, RSTART+RLENGTH)
	else
	    break
    }
    sub(/^ */, "", line)
    match(line, /^((const|enum|static|struct|union) +)*([_0-9A-Za-z]+ +|((char|double|float|int|long|short|unsigned|void) +)+)((const|static) +)*/)
    dtype = substr(line, 1, RLENGTH)
    sub(/ *$/, "", dtype)
    islocal = " " dtype " " ~ / static /
    line = substr(line, RLENGTH+1) ","
    # Handle each declarator.
    output = ""
    while(match(line, /^[^,]*,/)) {
	# Separate out the name from the declarator.  Use "@+" and "@-"
	# to bracket the name within the declarator.  Strip off any
	# initialiser.
	dcltor = substr(line, 1, RLENGTH-1)
	line = substr(line, RLENGTH+1)
	sub(/\=.*$/, "", dcltor)
	match(dcltor, /^([^_0-9A-Za-z]| const )*/)
	dcltor = substr(dcltor, 1, RLENGTH) "@+" substr(dcltor, RLENGTH+1)
	match(dcltor, /^.*@\+[_0-9A-Za-z]+/)
	dcltor = substr(dcltor, 1, RLENGTH) "@-" substr(dcltor, RLENGTH+1)
	dnam = dcltor
	sub(/^.*@\+/, "", dnam)
	sub(/@-.*$/, "", dnam)

	# Put parens etc. back
	gsub(/@[{]/, " _((", dcltor)
	gsub(/@}/, "))", dcltor)
	gsub(/@</, "(", dcltor)
	gsub(/@>/, ")", dcltor)
	gsub(/@!/, ",", dcltor)

	# If this is a module boot/cleanup function, conditionally rename it.
	if(" " dtype " " ~ / int / && dcltor ~ / *@\+(boot|cleanup|setup|finish)_[_0-9A-Za-z]+@- *_\(\( *Module +[_0-9A-Za-z]+ *\)\) */) {
	    modtype = dnam
	    sub(/_.*$/, "", modtype)
	    output = output "# if defined(DYNAMIC_NAME_CLASH_OK) && defined(MODULE)\n"
	    output = output "#  define " dnam " " modtype "_\n"
	    output = output "# endif\n"
	}

	# Format the declaration for output
	dcl = dtype " " dcltor ";"
	if(!islocal)
	    dcl = "extern " dcl
	gsub(/@[+-]/, "", dcl)
	gsub(/ +/, " ", dcl)
	while(match(dcl, /[^_0-9A-Za-z] ./) || match(dcl, /. [^_0-9A-Za-z]/))
	    dcl = substr(dcl, 1, RSTART) substr(dcl, RSTART+2)
	output = output dcl "\n"
    }

    # Output global declarations now, but save up locals until the end.
    if(islocal)
	locals = locals output
    else
	printf "%s", output
}

END {
    if(aborting)
	exit 1
    printf "\n"
    printf "#endif /* !have_%s_globals */\n", name
    if(locals != "") {
	printf "\n"
	printf "#ifndef GLOBAL_PROTOTYPES\n"
	printf "\n"
	printf locals
	printf "\n"
	printf "#endif /* !GLOBAL_PROTOTYPES */\n"
    }
}