Skip to content

GitLab

Commit 1e98ac63 authored by Pekka Pessi's avatar Pekka Pessi
Browse files

msg_parser.awk: generate two parser tables, default and extended 

darcs-hash:20070919214030-65a35-56c54d9f070bdc3d32acfb7089d970050a3d921e.gz
parent 4d9f58d5
Hide whitespace changes
Inline Side-by-side
libsofia-sip-ua/msg/msg_parser.awk
View file @ 1e98ac63
......@@ -54,25 +54,26 @@ BEGIN {
split("", NAMES);
split("", Comments);
split("", COMMENTS);
split("", experimental);
# indexed by the C name of the header
split("", Since); # Non-NUL if extra
split("", Extra); # Offset in extra headers
total = 0;
ordinary = 0;
basic = 0;
extra = 0;
without_experimental = 0;
template="";
template1="";
template2="";
template3="";
prefix="";
tprefix="";
extra=0;
failed=0;
success=0;
extra_struct = "msg_pub_extra";
ERRNO="error";
}
......@@ -159,7 +160,6 @@ function protos (name, comment, hash, since)
symbols[name] = comment;
if (since) {
Since[name] = since;
Extra[name] = extra++;
}
expr = (without_experimental > 0 && do_hash);
......@@ -210,7 +210,7 @@ function replace (p, hash, name, NAME, comment, Comment, COMMENT, since)
#
# Repeat each line in the footer containing the magic replacement
# pattern with a instance of all headers
# pattern with an instance of all headers
#
function process_footer (text)
{
......@@ -368,9 +368,14 @@ function templates ()
}
/^#### EXTRA HEADER LIST STARTS HERE ####$/ { HLIST=1; templates(); }
HLIST && /^#### DEFAULT HEADER LIST ENDS HERE ####$/ { basic=total; }
HLIST && /^#### EXPERIMENTAL HEADER LIST STARTS HERE ####$/ {
without_experimental=total; }
HLIST && /^[a-z]/ { protos($1, $0, 0, $2); headers[total++] = $1; }
without_experimental = total; }
HLIST && /^[a-z]/ { protos($1, $0, 0, $2);
headers[total++] = $1;
Extra[$1] = extra++;
}
/^#### EXTRA HEADER LIST ENDS HERE ####$/ { HLIST=0; }
/^ *\/\* === Headers start here \*\// { in_header_list=1; templates(); }
......@@ -396,15 +401,110 @@ in_header_list && /^ (sip|rtsp|http|msg|mp)_[a-z_0-9]+_t/ {
if (!NO_MIDDLE)
protos(n, $0, 0);
headers[total++] = n;
headers[total] = n; total++; ordinary++;
}
function print_parser_table(struct, scope, name, N, N_EXPERIMENTAL)
{
if (PT) {
printf("/* Ordinary %u, extra %u, experimental %u */\n",
ordinary, N - ordinary, N_EXPERIMENTAL - N) > PT;
printf("struct %s {\n", struct) > PT;
printf(" %s_t base;\n", module) > PT;
printf(" msg_header_t *extra[%u];\n", N - ordinary) > PT;
if (N != N_EXPERIMENTAL) {
print "#if SU_HAVE_EXPERIMENTAL" > PT;
printf(" msg_header_t *extra[%u];\n", N_EXPERIMENTAL - N) > PT;
print "#endif" > PT;
}
printf("};\n\n") > PT;
printf("%s\n", scope) > PT;
printf("msg_mclass_t const %s[1] = \n{{\n", name) > PT;
printf("# if defined (%s_HCLASS)\n", toupper(module)) > PT;
printf(" %s_HCLASS,\n", toupper(module)) > PT;
printf("#else\n") > PT;
printf(" {{ 0 }},\n") > PT;
printf("#endif\n") > PT;
printf(" %s_VERSION_CURRENT,\n", toupper(module)) > PT;
printf(" %s_PROTOCOL_TAG,\n", toupper(module)) > PT;
printf("#if defined (%s_PARSER_FLAGS)\n", toupper(module)) > PT;
printf(" %s_PARSER_FLAGS,\n", toupper(module)) > PT;
printf("#else\n") > PT;
printf(" 0,\n") > PT;
printf("#endif\n") > PT;
printf(" sizeof (struct %s),\n", struct) > PT;
printf(" %s_extract_body,\n", module) > PT;
len = split("request status separator payload unknown error", unnamed, " ");
for (i = 1; i <= len; i++) {
printf(" {{ %s_%s_class, msg_offsetof(%s_t, %s_%s) }},\n",
tprefix, unnamed[i], module, prefix, unnamed[i]) > PT;
}
if (multipart) {
printf(" {{ %s_class, msg_offsetof(%s_t, %s_multipart) }},\n",
multipart, module, prefix) > PT;
} else {
printf(" {{ NULL, 0 }},\n") > PT;
}
if (MC_SHORT_SIZE) {
printf(" %s_short_forms, \n", module) > PT;
}
else {
printf(" NULL, \n") > PT;
}
printf(" %d, \n", MC_HASH_SIZE) > PT;
if (N != N_EXPERIMENTAL) {
print "#if SU_HAVE_EXPERIMENTAL" > PT;
printf(" %d,\n", N_EXPERIMENTAL) > PT;
print "#else" > PT;
}
printf(" %d,\n", N) > PT;
if (N != N_EXPERIMENTAL) {
print "#endif" > PT;
}
printf(" {\n") > PT;
for (j = 0; j < MC_HASH_SIZE; j++) {
c = (j + 1 == MC_HASH_SIZE) ? "" : ",";
if (j in header_hash) {
n = header_hash[j];
i = index_hash[j];
flags = header_flags[n]; if (flags) flags = ",\n " flags;
if (i >= N) {
print "#if SU_HAVE_EXPERIMENTAL" > PT;
}
if (i >= ordinary) {
printf(" { %s_%s_class,\n" \
" msg_offsetof(struct %s, extra[%u])%s }%s\n",
tprefix, n, struct, Extra[n], flags, c) > PT;
}
else {
printf(" { %s_%s_class, msg_offsetof(%s_t, %s_%s)%s }%s\n",
tprefix, n, module, prefix, n, flags, c) > PT;
}
if (i >= N) {
printf("#else\n { NULL, 0 }%s\n#endif\n", c) > PT;
}
}
else {
printf(" { NULL, 0 }%s\n", c) > PT;
}
}
printf(" }\n}};\n\n") > PT;
}
}
END {
if (failed) { exit };
if (without_experimental == 0)
without_experimental = total;
if (!NO_LAST) {
protos("unknown", "/**< Unknown headers */", -3);
protos("error", "/**< Erroneous headers */", -4);
......@@ -429,8 +529,6 @@ END {
getline footer < TEMPLATE;
RS=RS0;
module_struct = module "_t";
sub(/.*[\/]/, "", TEMPLATE);
gsub(/#AUTO#/, auto, header);
gsub(/#DATE#/, "@date Generated: " date, header);
......@@ -451,9 +549,9 @@ END {
n = shorts[i];
flags = header_flags[n]; if (flags) flags = ",\n " flags;
printf(" { /* %s */ %s_%s_class, msg_offsetof(%s_t, %s_%s)%s }%s\n",
substr(lower_case, i, 1),
tprefix, n, module, prefix, n, flags, c) \
printf(" { /* %s */ %s_%s_class, msg_offsetof(%s_t, %s_%s)%s }%s\n",
substr(lower_case, i, 1),
tprefix, n, module, prefix, n, flags, c) \
> PT;
}
else {
......@@ -466,67 +564,47 @@ END {
# printf("extern msg_hclass_t msg_multipart_class[];\n\n") > PT;
if (extra > 0) {
printf("struct %s {\n", extra_struct) > PT;
printf(" %s base;\n", module_struct) > PT;
if (total - without_experimental < extra) {
printf(" msg_header_t *extra[%u];\n",
extra - (total - without_experimental)) > PT;
}
if (total - without_experimental > 0) {
print "#if SU_HAVE_EXPERIMENTAL" > PT;
printf(" msg_header_t *experimental[%u];\n",
total - without_experimental) > PT;
print "#endif" > PT;
}
printf("};\n\n") > PT;
module_struct = "struct " extra_struct;
}
if (basic == 0) basic = total;
if (without_experimental == 0) without_experimental = total;
printf("msg_mclass_t const %s_mclass[1] = \n{{\n", module) > PT;
printf("# if defined (%s_HCLASS)\n", toupper(module)) > PT;
printf(" %s_HCLASS,\n", toupper(module)) > PT;
printf("#else\n") > PT;
printf(" {{ 0 }},\n") > PT;
printf("#endif\n") > PT;
printf(" %s_VERSION_CURRENT,\n", toupper(module)) > PT;
printf(" %s_PROTOCOL_TAG,\n", toupper(module)) > PT;
printf("#if defined (%s_PARSER_FLAGS)\n", toupper(module)) > PT;
printf(" %s_PARSER_FLAGS,\n", toupper(module)) > PT;
printf("#else\n") > PT;
printf(" 0,\n") > PT;
printf("#endif\n") > PT;
printf(" sizeof (%s),\n", module_struct) > PT;
printf(" %s_extract_body,\n", module) > PT;
split("", header_hash);
split("", index_hash);
len = split("request status separator payload unknown error", unnamed, " ");
for (i = 0; i < basic; i++) {
n = headers[i];
h = hashed[n];
for (i = 1; i <= len; i++) {
printf(" {{ %s_%s_class, msg_offsetof(%s_t, %s_%s) }},\n",
tprefix, unnamed[i], module, prefix, unnamed[i]) > PT;
if (h < 0)
continue;
j = h % MC_HASH_SIZE; if (j == -0) j = 0;
for (; j in header_hash;) {
if (++j == MC_HASH_SIZE) {
j = 0;
}
}
header_hash[j] = n;
index_hash[j] = i;
}
if (multipart) {
printf(" {{ %s_class, msg_offsetof(%s_t, %s_multipart) }},\n",
multipart, module, prefix) > PT;
} else {
printf(" {{ NULL, 0 }},\n") > PT;
m = module "_mclass";
s = "_d_" module "_t";
/* Add basic headers */
if (ordinary == basic) {
print_parser_table(s, "", m, basic, basic);
}
if (MC_SHORT_SIZE) {
printf(" %s_short_forms, \n", module) > PT;
else if (basic < without_experimental) {
print_parser_table(s, "", m, basic, basic);
}
else {
printf(" NULL, \n") > PT;
}
printf(" %d, \n", MC_HASH_SIZE) > PT;
printf ("#if SU_HAVE_EXPERIMENTAL\n" \
" %d,\n" \
"#else\n" \
" %d,\n" \
"#endif\n", \
total, without_experimental) > PT;
printf(" {\n") > PT;
print_parser_table(s, "", m, without_experimental, basic);
}
for (i = 0; i < total; i++) {
/* Hash extra headers */
for (i = basic; i < total; i++) {
n = headers[i];
h = hashed[n];
......@@ -542,38 +620,16 @@ END {
}
header_hash[j] = n;
experimental2[j] = (i >= without_experimental);
index_hash[j] = i;
}
for (i = 0; i < MC_HASH_SIZE; i++) {
c = (i + 1 == MC_HASH_SIZE) ? "" : ",";
if (i in header_hash) {
n = header_hash[i];
flags = header_flags[n]; if (flags) flags = ",\n " flags;
if (experimental2[i]) {
print "#if SU_HAVE_EXPERIMENTAL" > PT;
}
if (Since[n]) {
printf(" { %s_%s_class,\n" \
" msg_offsetof(struct %s, extra[%u])%s }%s\n",
tprefix, n, extra_struct, Extra[n], flags, c) > PT;
}
else {
printf(" { %s_%s_class, msg_offsetof(%s_t, %s_%s)%s }%s\n",
tprefix, n, module, prefix, n, flags, c) > PT;
}
if (experimental2[i]) {
printf("#else\n { NULL, 0 }%s\n#endif\n", c) > PT;
}
}
else {
printf(" { NULL, 0 }%s\n", c) > PT;
}
if (basic < total) {
m = module "_ext_mclass";
s = "_e_" module "_s";
print_parser_table(s, "static", m, without_experimental, total);
}
printf(" }\n}};\n\n") > PT;
printf("msg_mclass_t const * %s_extended_mclass = %s;\n", module, m) > PT;
}
exit success;
......
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment