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214 lines
8.2 KiB
214 lines
8.2 KiB
#!/usr/bin/env perl
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require 5.003;
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use strict;
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use warnings;
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# Global settings
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# List of supported C types to generate overflow assignment code for
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my @ctypes = ( () );
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#
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# Copyright by The HDF Group.
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# All rights reserved.
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#
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# This file is part of HDF5. The full HDF5 copyright notice, including
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# terms governing use, modification, and redistribution, is contained in
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# the COPYING file, which can be found at the root of the source code
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# distribution tree, or in https://www.hdfgroup.org/licenses.
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# If you do not have access to either file, you may request a copy from
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# help@hdfgroup.org.
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#
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# Create assignment overflow #ifdefs
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#
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# Programmer: Quincey Koziol
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# Creation Date: 2009/04/09
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##############################################################################
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# Parse a meaningful line (not a comment or blank line) into the appropriate
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# data structure
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#
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sub parse_line ($) {
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my $line = shift; # Get the line to parse
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# Parse get the type name and whether it's signed or unsigned
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#print "line=$line\n";
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if($line =~ /.*SIGNED\s*;\s*$/ || $line =~ /.*UNSIGNED\s*;\s*$/) {
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my $name; # The name of the type
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my $signed; # Whether the type is signed or not
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# Get the type's name & signed status
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($name, $signed) = ($line =~ /^\s*(\w*)\s*,\s*(\w*)\s*;\s*$/);
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#print "name = '$name', signed = '$signed'\n";
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# Append the type to the list of C types already parsed
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push @ctypes, [$name, $signed];
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}
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# Unknown keyword
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else {
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die "unknown keyword: $line";
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}
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}
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##############################################################################
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# Print the copyright into an open file
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#
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sub print_copyright ($) {
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my $fh = shift;
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print $fh "/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\n";
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print $fh " * Copyright by The HDF Group. *\n";
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print $fh " * All rights reserved. *\n";
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print $fh " * *\n";
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print $fh " * This file is part of HDF5. The full HDF5 copyright notice, including *\n";
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print $fh " * terms governing use, modification, and redistribution, is contained in *\n";
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print $fh " * the COPYING file, which can be found at the root of the source code *\n";
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print $fh " * distribution tree, or in https://www.hdfgroup.org/licenses. *\n";
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print $fh " * If you do not have access to either file, you may request a copy from *\n";
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print $fh " * help\@hdfgroup.org. *\n";
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print $fh " * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */\n";
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}
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##############################################################################
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# Print the "do not change this file" warning
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#
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sub print_warning ($) {
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my $fh = shift;
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print $fh "\n/* Generated automatically by bin/make_overflow -- do not edit */\n";
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print $fh "/* Add new types to H5overflow.txt file */\n\n";
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}
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##############################################################################
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# Print start of ifdef's to prevent a file from being re-included
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#
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sub print_startprotect ($$) {
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my ($fh, $file) = @_;
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# Clip off the ".h" part of the name
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$file =~ s/(\w*)\.h/$1/;
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# Print the ifdef info
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print $fh "\n#ifndef ${file}_H\n";
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print $fh "#define ${file}_H\n";
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}
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##############################################################################
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# Print assignment overflow macros for each type
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#
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sub print_typemacros ($) {
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my $fh = shift; # File handle for output file
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my ($src_aref, $dst_aref); # References for each type's information
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# Print the descriptive comment
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print $fh "\n\n/* Each type in this file is tested for assignment to the other types,\n";
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print $fh " * and range checks are defined for bad assignments at run-time.\n";
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print $fh " */\n";
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for $src_aref (@ctypes) {
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# Print a descriptive comment
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print $fh "\n/* Assignment checks for @$src_aref[0] */\n\n";
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for $dst_aref (@ctypes) {
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if (@$src_aref[0] ne @$dst_aref[0]) {
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# Print a descriptive comment
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print $fh "/* src: @$src_aref[0], dst: @$dst_aref[0] */\n";
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# Print actual type size checks & macro definitions
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print $fh "#if H5_SIZEOF_", uc @$src_aref[0], " < H5_SIZEOF_", uc @$dst_aref[0], "\n";
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print $fh " #define ASSIGN_", @$src_aref[0], "_TO_", @$dst_aref[0], "(dst, dsttype, src, srctype) \\\n";
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if ( @$src_aref[1] eq @$dst_aref[1]) {
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print $fh " ASSIGN_TO_LARGER_SIZE_SAME_SIGNED(dst, dsttype, src, srctype)\n";
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} elsif ( @$src_aref[1] eq "SIGNED") {
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print $fh " ASSIGN_TO_LARGER_SIZE_SIGNED_TO_UNSIGNED(dst, dsttype, src, srctype)\n";
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} else {
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print $fh " ASSIGN_TO_LARGER_SIZE_UNSIGNED_TO_SIGNED(dst, dsttype, src, srctype)\n";
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}
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print $fh "#elif H5_SIZEOF_", uc @$src_aref[0], " > H5_SIZEOF_", uc @$dst_aref[0], "\n";
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print $fh " #define ASSIGN_", @$src_aref[0], "_TO_", @$dst_aref[0], "(dst, dsttype, src, srctype) \\\n";
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print $fh " ASSIGN_TO_SMALLER_SIZE(dst, dsttype, src, srctype)\n";
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print $fh "#else /* H5_SIZEOF_", uc @$src_aref[0], " == H5_SIZEOF_", uc @$dst_aref[0], " */\n";
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print $fh " #define ASSIGN_", @$src_aref[0], "_TO_", @$dst_aref[0], "(dst, dsttype, src, srctype) \\\n";
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if ( @$src_aref[1] eq @$dst_aref[1]) {
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print $fh " ASSIGN_TO_SAME_SIZE_SAME_SIGNED(dst, dsttype, src, srctype)\n";
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} elsif ( @$src_aref[1] eq "SIGNED") {
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print $fh " ASSIGN_TO_SAME_SIZE_SIGNED_TO_UNSIGNED(dst, dsttype, src, srctype)\n";
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} else {
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print $fh " ASSIGN_TO_SAME_SIZE_UNSIGNED_TO_SIGNED(dst, dsttype, src, srctype)\n";
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}
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print $fh "#endif /* src: @$src_aref[0] dst: @$dst_aref[0] */\n\n";
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}
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}
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}
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}
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##############################################################################
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# Print end of ifdef's to prevent a file from being re-included
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#
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sub print_endprotect ($$) {
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my ($fh, $file) = @_;
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# Clip off the ".h" part of the name
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$file =~ s/(\w*)\.h/$1/;
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# Print the endif info
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print $fh "#endif /* ${file}_H */\n\n";
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}
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##############################################################################
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# Create the generated portion of the public header file
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#
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sub create_public ($) {
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my $prefix = shift; # Get the prefix for the generated file
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my $file = "H5overflow.h"; # Name of file to generate
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my $name; # Name of function
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# Rename previous file
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# rename "${prefix}${file}", "${prefix}${file}~" or die "unable to make backup";
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# Open new header file
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open HEADER, ">${prefix}${file}" or die "unable to modify source";
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# Create file contents
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print_copyright(*HEADER);
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print_warning(*HEADER);
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print_startprotect(*HEADER, $file);
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print_typemacros(*HEADER);
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print_endprotect(*HEADER, $file);
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# Close header file
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close HEADER;
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}
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##############################################################################
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# Read symbol version file (given as command-line argument) in and process it
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# into internal data structures, then create header files.
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#
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my $file; # Filename of input file
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for $file (@ARGV) {
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my $prefix; # Local prefix for generated files
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my $line; # Line from input file
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#print "file = '$file'\n";
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($prefix) = ($file =~ /(^.*\/)/);
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#print "prefix = '$prefix'\n";
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# Read in the entire file
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open SOURCE, $file or die "$file: $!\n";
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while ( defined ($line=<SOURCE>) ) {
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# Skip blank lines and those lines whose first character is a '#'
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if(!($line =~ /(^\s*#.*$)|(^\s*$)/)) {
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# Construct data structures for later printing
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parse_line($line);
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}
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}
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close SOURCE;
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# Create header files
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print "Generating 'H5overflow.h'\n";
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create_public($prefix);
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}
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