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| Current File : //sys/tools/makeobjops.awk |
#!/usr/bin/awk -f
#-
# Copyright (c) 1992, 1993
# The Regents of the University of California. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# 4. Neither the name of the University nor the names of its contributors
# may be used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# From @(#)vnode_if.sh 8.1 (Berkeley) 6/10/93
# From @(#)makedevops.sh 1.1 1998/06/14 13:53:12 dfr Exp $
# From @(#)makedevops.sh ?.? 1998/10/05
# From src/sys/kern/makedevops.pl,v 1.12 1999/11/22 14:40:04 n_hibma Exp
# From src/sys/kern/makeobjops.pl,v 1.8 2001/11/16 02:02:42 joe Exp
#
# $FreeBSD: release/9.1.0/sys/tools/makeobjops.awk 198374 2009-10-22 20:57:17Z emaste $
#
# Script to produce kobj front-end sugar.
#
function usage ()
{
print "usage: makeobjops.awk <srcfile.m> [-d] [-p] [-l <nr>] [-c|-h]";
print "where -c produce only .c files";
print " -h produce only .h files";
print " -p use the path component in the source file for destination dir";
print " -l set line width for output files [80]";
print " -d switch on debugging";
exit 1;
}
function warn (msg)
{
print "makeobjops.awk:", msg > "/dev/stderr";
}
function warnsrc (msg)
{
warn(src ":" lineno ": " msg);
}
function debug (msg)
{
if (opt_d)
warn(msg);
}
function die (msg)
{
warn(msg);
exit 1;
}
# These are just for convenience ...
function printc(s) {if (opt_c) print s > ctmpfilename;}
function printh(s) {if (opt_h) print s > htmpfilename;}
#
# If a line exceeds maxlength, split it into multiple
# lines at commas. Subsequent lines are indented by
# the specified number of spaces.
#
# In other words: Lines are split by replacing ", "
# by ",\n" plus indent spaces.
#
function format_line (line, maxlength, indent)
{
rline = "";
while (length(line) > maxlength) {
#
# Find the rightmost ", " so that the part
# to the left of it is just within maxlength.
# If there is none, give up and leave it as-is.
#
if (!match(substr(line, 1, maxlength + 1), /^.*, /))
break;
rline = rline substr(line, 1, RLENGTH - 1) "\n";
line = sprintf("%*s", indent, "") substr(line, RLENGTH + 1);
}
return rline line;
}
#
# Join an array into a string.
#
function join (separator, array, num)
{
_result = ""
if (num) {
while (num > 1)
_result = separator array[num--] _result;
_result = array[1] _result;
}
return _result;
}
#
# Execute a system command and report if it failed.
#
function system_check (cmd)
{
if ((rc = system(cmd)))
warn(cmd " failed (" rc ")");
}
#
# Handle "INTERFACE" line.
#
function handle_interface ()
{
intname = $2;
sub(/;$/, "", intname);
if (intname !~ /^[a-z_][a-z0-9_]*$/) {
debug($0);
warnsrc("Invalid interface name '" intname "', use [a-z_][a-z0-9_]*");
error = 1;
return;
}
if (!/;[ ]*$/)
warnsrc("Semicolon missing at end of line, no problem");
debug("Interface " intname);
printh("#ifndef _" intname "_if_h_");
printh("#define _" intname "_if_h_\n");
printc("#include \"" intname "_if.h\"\n");
}
#
# Pass doc comments through to the C file
#
function handle_doc ()
{
doc = ""
while (!/\*\//) {
doc = doc $0 "\n";
getline < src;
lineno++;
}
doc = doc $0 "\n";
return doc;
}
#
# Handle "CODE" and "HEADER" sections.
# Returns the code as-is.
#
function handle_code ()
{
code = "\n";
getline < src;
indent = $0;
sub(/[^ ].*$/, "", indent); # find the indent used
while (!/^}/) {
sub("^" indent, ""); # remove the indent
code = code $0 "\n";
getline < src;
lineno++;;
}
return code;
}
#
# Handle "METHOD" and "STATICMETHOD" sections.
#
function handle_method (static, doc)
{
#
# Get the return type and function name and delete that from
# the line. What is left is the possibly first function argument
# if it is on the same line.
#
if (!intname) {
warnsrc("No interface name defined");
error = 1;
return;
}
sub(/^[^ ]+[ ]+/, "");
ret = $0;
sub(/[ ]*\{.*$/, "", ret);
name = ret;
sub(/^.*[ ]/, "", name); # last element is name of method
sub(/[ ]+[^ ]+$/, "", ret); # return type
debug("Method: name=" name " return type=" ret);
sub(/^[^\{]*\{[ ]*/, "");
if (!name || !ret) {
debug($0);
warnsrc("Invalid method specification");
error = 1;
return;
}
if (name !~ /^[a-z_][a-z_0-9]*$/) {
warnsrc("Invalid method name '" name "', use [a-z_][a-z0-9_]*");
error = 1;
return;
}
if (methods[name]) {
warnsrc("Duplicate method name");
error = 1;
return;
}
methods[name] = name;
line = $0;
while (line !~ /\}/ && (getline < src) > 0) {
line = line " " $0;
lineno++
}
default_function = "";
if (!match(line, /\};?/)) {
warnsrc("Premature end of file");
error = 1;
return;
}
extra = substr(line, RSTART + RLENGTH);
if (extra ~ /[ ]*DEFAULT[ ]*[a-zA-Z_][a-zA-Z_0-9]*[ ]*;/) {
default_function = extra;
sub(/.*DEFAULT[ ]*/, "", default_function);
sub(/[; ]+.*$/, "", default_function);
}
else if (extra && opt_d) {
# Warn about garbage at end of line.
warnsrc("Ignored '" extra "'");
}
sub(/\};?.*$/, "", line);
#
# Create a list of variables without the types prepended.
#
sub(/^[ ]+/, "", line); # remove leading ...
sub(/[ ]+$/, "", line); # ... and trailing whitespace
gsub(/[ ]+/, " ", line); # remove double spaces
num_arguments = split(line, arguments, / *; */) - 1;
delete varnames; # list of varnames
num_varnames = 0;
for (i = 1; i <= num_arguments; i++) {
if (!arguments[i])
continue; # skip argument if argument is empty
num_ar = split(arguments[i], ar, /[* ]+/);
if (num_ar < 2) { # only 1 word in argument?
warnsrc("no type for '" arguments[i] "'");
error = 1;
return;
}
# Last element is name of variable.
varnames[++num_varnames] = ar[num_ar];
}
argument_list = join(", ", arguments, num_arguments);
varname_list = join(", ", varnames, num_varnames);
if (opt_d) {
warn("Arguments: " argument_list);
warn("Varnames: " varname_list);
}
mname = intname "_" name; # method name
umname = toupper(mname); # uppercase method name
firstvar = varnames[1];
if (default_function == "")
default_function = "kobj_error_method";
# the method description
printh("/** @brief Unique descriptor for the " umname "() method */");
printh("extern struct kobjop_desc " mname "_desc;");
# the method typedef
printh("/** @brief A function implementing the " umname "() method */");
prototype = "typedef " ret " " mname "_t(";
printh(format_line(prototype argument_list ");",
line_width, length(prototype)));
# Print out the method desc
printc("struct kobj_method " mname "_method_default = {");
printc("\t&" mname "_desc, (kobjop_t) " default_function);
printc("};\n");
printc("struct kobjop_desc " mname "_desc = {");
printc("\t0, &" mname "_method_default");
printc("};\n");
# Print out the method itself
printh(doc);
if (0) { # haven't chosen the format yet
printh("static __inline " ret " " umname "(" varname_list ")");
printh("\t" join(";\n\t", arguments, num_arguments) ";");
}
else {
prototype = "static __inline " ret " " umname "(";
printh(format_line(prototype argument_list ")",
line_width, length(prototype)));
}
printh("{");
printh("\tkobjop_t _m;");
if (!static)
firstvar = "((kobj_t)" firstvar ")";
printh("\tKOBJOPLOOKUP(" firstvar "->ops," mname ");");
retrn = (ret != "void") ? "return " : "";
printh("\t" retrn "((" mname "_t *) _m)(" varname_list ");");
printh("}\n");
}
#
# Begin of the main program.
#
BEGIN {
line_width = 80;
gerror = 0;
#
# Process the command line.
#
num_files = 0;
for (i = 1; i < ARGC; i++) {
if (ARGV[i] ~ /^-/) {
#
# awk doesn't have getopt(), so we have to do it ourselves.
# This is a bit clumsy, but it works.
#
for (j = 2; j <= length(ARGV[i]); j++) {
o = substr(ARGV[i], j, 1);
if (o == "c") opt_c = 1;
else if (o == "h") opt_h = 1;
else if (o == "p") opt_p = 1;
else if (o == "d") opt_d = 1;
else if (o == "l") {
if (length(ARGV[i]) > j) {
opt_l = substr(ARGV[i], j + 1);
break;
}
else {
if (++i < ARGC)
opt_l = ARGV[i];
else
usage();
}
}
else
usage();
}
}
else if (ARGV[i] ~ /\.m$/)
filenames[num_files++] = ARGV[i];
else
usage();
}
if (!num_files || !(opt_c || opt_h))
usage();
if (opt_p)
debug("Will produce files in original not in current directory");
if (opt_l) {
if (opt_l !~ /^[0-9]+$/ || opt_l < 1)
die("Invalid line width '" opt_l "'");
line_width = opt_l;
debug("Line width set to " line_width);
}
for (i = 0; i < num_files; i++)
debug("Filename: " filenames[i]);
for (file_i = 0; file_i < num_files; file_i++) {
src = filenames[file_i];
cfilename = hfilename = src;
sub(/\.m$/, ".c", cfilename);
sub(/\.m$/, ".h", hfilename);
if (!opt_p) {
sub(/^.*\//, "", cfilename);
sub(/^.*\//, "", hfilename);
}
debug("Processing from " src " to " cfilename " / " hfilename);
ctmpfilename = cfilename ".tmp";
htmpfilename = hfilename ".tmp";
common_head = \
"/*\n" \
" * This file is produced automatically.\n" \
" * Do not modify anything in here by hand.\n" \
" *\n" \
" * Created from source file\n" \
" * " src "\n" \
" * with\n" \
" * makeobjops.awk\n" \
" *\n" \
" * See the source file for legal information\n" \
" */\n";
printc(common_head "\n" \
"#include <sys/param.h>\n" \
"#include <sys/queue.h>\n" \
"#include <sys/kernel.h>\n" \
"#include <sys/kobj.h>");
printh(common_head);
delete methods; # clear list of methods
intname = "";
lineno = 0;
error = 0; # to signal clean up and gerror setting
lastdoc = "";
while (!error && (getline < src) > 0) {
lineno++;
#
# Take special notice of include directives.
#
if (/^#[ ]*include[ ]+["<][^">]+[">]/) {
incld = $0;
sub(/^#[ ]*include[ ]+/, "", incld);
debug("Included file: " incld);
printc("#include " incld);
}
sub(/#.*/, ""); # remove comments
sub(/^[ ]+/, ""); # remove leading ...
sub(/[ ]+$/, ""); # ... and trailing whitespace
if (/^$/) { # skip empty lines
}
else if (/^\/\*\*/)
lastdoc = handle_doc();
else if (/^INTERFACE[ ]+[^ ;]*[ ]*;?[ ]*$/) {
printh(lastdoc);
lastdoc = "";
handle_interface();
} else if (/^CODE[ ]*{$/)
printc(handle_code());
else if (/^HEADER[ ]*{$/)
printh(handle_code());
else if (/^METHOD/) {
handle_method(0, lastdoc);
lastdoc = "";
} else if (/^STATICMETHOD/) {
handle_method(1, lastdoc);
lastdoc = "";
} else {
debug($0);
warnsrc("Invalid line encountered");
error = 1;
}
}
#
# Print the final '#endif' in the header file.
#
printh("#endif /* _" intname "_if_h_ */");
close (ctmpfilename);
close (htmpfilename);
if (error) {
warn("Output skipped");
system_check("rm -f " ctmpfilename " " htmpfilename);
gerror = 1;
}
else {
if (opt_c)
system_check("mv -f " ctmpfilename " " cfilename);
if (opt_h)
system_check("mv -f " htmpfilename " " hfilename);
}
}
exit gerror;
}