mirror of
https://github.com/tildearrow/furnace.git
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79 lines
2.1 KiB
Perl
79 lines
2.1 KiB
Perl
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#!/usr/bin/perl -w
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# Generate Fortran 2003 wrappers (which translate MPI_Comm from f2c) from
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# function declarations of the form (one per line):
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# extern <type> fftw_mpi_<name>(...args...)
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# extern <type> fftw_mpi_<name>(...args...)
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# ...
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# with no line breaks within a given function. (It's too much work to
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# write a general parser, since we just have to handle FFTW's header files.)
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# Each declaration has at least one MPI_Comm argument.
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sub canonicalize_type {
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my($type);
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($type) = @_;
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$type =~ s/ +/ /g;
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$type =~ s/^ //;
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$type =~ s/ $//;
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$type =~ s/([^\* ])\*/$1 \*/g;
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$type =~ s/double/R/;
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$type =~ s/fftw_([A-Za-z0-9_]+)/X(\1)/;
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return $type;
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}
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while (<>) {
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next if /^ *$/;
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if (/^ *extern +([a-zA-Z_0-9 ]+[ \*]) *fftw_mpi_([a-zA-Z_0-9]+) *\((.*)\) *$/) {
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$ret = &canonicalize_type($1);
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$name = $2;
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$args = $3;
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print "\n$ret XM(${name}_f03)(";
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$comma = "";
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foreach $arg (split(/ *, */, $args)) {
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$arg =~ /^([a-zA-Z_0-9 ]+[ \*]) *([a-zA-Z_0-9]+) *$/;
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$argtype = &canonicalize_type($1);
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$argname = $2;
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print $comma;
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if ($argtype eq "MPI_Comm") {
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print "MPI_Fint f_$argname";
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}
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else {
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print "$argtype $argname";
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}
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$comma = ", ";
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}
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print ")\n{\n";
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print " MPI_Comm ";
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$comma = "";
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foreach $arg (split(/ *, */, $args)) {
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$arg =~ /^([a-zA-Z_0-9 ]+[ \*]) *([a-zA-Z_0-9]+) *$/;
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$argtype = &canonicalize_type($1);
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$argname = $2;
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if ($argtype eq "MPI_Comm") {
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print "$comma$argname";
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$comma = ", ";
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}
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}
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print ";\n\n";
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foreach $arg (split(/ *, */, $args)) {
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$arg =~ /^([a-zA-Z_0-9 ]+[ \*]) *([a-zA-Z_0-9]+) *$/;
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$argtype = &canonicalize_type($1);
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$argname = $2;
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if ($argtype eq "MPI_Comm") {
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print " $argname = MPI_Comm_f2c(f_$argname);\n";
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}
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}
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$argnames = $args;
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$argnames =~ s/([a-zA-Z_0-9 ]+[ \*]) *([a-zA-Z_0-9]+) */$2/g;
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print " ";
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print "return " if ($ret ne "void");
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print "XM($name)($argnames);\n}\n";
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}
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}
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