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comrogue-pi/tools/pidl/lib/Parse/Pidl/Samba4/Header.pm

538 lines
12 KiB
Perl
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###################################################
# create C header files for an IDL structure
# Copyright tridge@samba.org 2000
# Copyright jelmer@samba.org 2005
# released under the GNU GPL
package Parse::Pidl::Samba4::Header;
require Exporter;
@ISA = qw(Exporter);
@EXPORT_OK = qw(GenerateFunctionInEnv GenerateFunctionOutEnv EnvSubstituteValue GenerateStructEnv);
use strict;
use Parse::Pidl qw(fatal);
use Parse::Pidl::Typelist qw(mapTypeName scalar_is_reference);
use Parse::Pidl::Util qw(has_property is_constant unmake_str ParseExpr);
use Parse::Pidl::Samba4 qw(is_intree ElementStars ArrayBrackets choose_header);
use vars qw($VERSION);
$VERSION = '0.01';
my($res);
my($tab_depth);
sub pidl($) { $res .= shift; }
sub tabs()
{
my $res = "";
$res .="\t" foreach (1..$tab_depth);
return $res;
}
#####################################################################
# parse a properties list
sub HeaderProperties($$)
{
my($props,$ignores) = @_;
my $ret = "";
foreach my $d (keys %{$props}) {
next if (grep(/^$d$/, @$ignores));
if($props->{$d} ne "1") {
$ret.= "$d($props->{$d}),";
} else {
$ret.="$d,";
}
}
if ($ret) {
pidl "/* [" . substr($ret, 0, -1) . "] */";
}
}
#####################################################################
# parse a structure element
sub HeaderElement($)
{
my($element) = shift;
pidl tabs();
if (has_property($element, "represent_as")) {
pidl mapTypeName($element->{PROPERTIES}->{represent_as})." ";
} else {
if (ref($element->{TYPE}) eq "HASH") {
HeaderType($element, $element->{TYPE}, $element->{TYPE}->{NAME});
} else {
HeaderType($element, $element->{TYPE}, "");
}
pidl " ".ElementStars($element);
}
pidl $element->{NAME};
pidl ArrayBrackets($element);
pidl ";";
if (defined $element->{PROPERTIES}) {
HeaderProperties($element->{PROPERTIES}, ["in", "out"]);
}
pidl "\n";
}
#####################################################################
# parse a struct
sub HeaderStruct($$;$)
{
my($struct,$name,$tail) = @_;
pidl "struct $name";
pidl $tail if defined($tail) and not defined($struct->{ELEMENTS});
return if (not defined($struct->{ELEMENTS}));
pidl " {\n";
$tab_depth++;
my $el_count=0;
foreach (@{$struct->{ELEMENTS}}) {
HeaderElement($_);
$el_count++;
}
if ($el_count == 0) {
# some compilers can't handle empty structures
pidl tabs()."char _empty_;\n";
}
$tab_depth--;
pidl tabs()."}";
if (defined $struct->{PROPERTIES}) {
HeaderProperties($struct->{PROPERTIES}, []);
}
pidl $tail if defined($tail);
}
#####################################################################
# parse a enum
sub HeaderEnum($$;$)
{
my($enum,$name,$tail) = @_;
my $first = 1;
pidl "enum $name";
if (defined($enum->{ELEMENTS})) {
pidl "\n#ifndef USE_UINT_ENUMS\n";
pidl " {\n";
$tab_depth++;
foreach my $e (@{$enum->{ELEMENTS}}) {
my @enum_els = ();
unless ($first) { pidl ",\n"; }
$first = 0;
pidl tabs();
@enum_els = split(/=/, $e);
if (@enum_els == 2) {
pidl $enum_els[0];
pidl "=(int)";
pidl "(";
pidl $enum_els[1];
pidl ")";
} else {
pidl $e;
}
}
pidl "\n";
$tab_depth--;
pidl "}";
pidl "\n";
pidl "#else\n";
my $count = 0;
my $with_val = 0;
my $without_val = 0;
pidl " { __do_not_use_enum_$name=0x7FFFFFFF}\n";
foreach my $e (@{$enum->{ELEMENTS}}) {
my $t = "$e";
my $name;
my $value;
if ($t =~ /(.*)=(.*)/) {
$name = $1;
$value = $2;
$with_val = 1;
fatal($e->{ORIGINAL}, "you can't mix enum member with values and without values!")
unless ($without_val == 0);
} else {
$name = $t;
$value = $count++;
$without_val = 1;
fatal($e->{ORIGINAL}, "you can't mix enum member with values and without values!")
unless ($with_val == 0);
}
pidl "#define $name ( $value )\n";
}
pidl "#endif\n";
}
pidl $tail if defined($tail);
}
#####################################################################
# parse a bitmap
sub HeaderBitmap($$)
{
my($bitmap,$name) = @_;
return unless defined($bitmap->{ELEMENTS});
pidl "/* bitmap $name */\n";
pidl "#define $_\n" foreach (@{$bitmap->{ELEMENTS}});
pidl "\n";
}
#####################################################################
# parse a union
sub HeaderUnion($$;$)
{
my($union,$name,$tail) = @_;
my %done = ();
pidl "union $name";
pidl $tail if defined($tail) and not defined($union->{ELEMENTS});
return if (not defined($union->{ELEMENTS}));
pidl " {\n";
$tab_depth++;
my $needed = 0;
foreach my $e (@{$union->{ELEMENTS}}) {
if ($e->{TYPE} ne "EMPTY") {
if (! defined $done{$e->{NAME}}) {
HeaderElement($e);
}
$done{$e->{NAME}} = 1;
$needed++;
}
}
if (!$needed) {
# sigh - some compilers don't like empty structures
pidl tabs()."int _dummy_element;\n";
}
$tab_depth--;
pidl "}";
if (defined $union->{PROPERTIES}) {
HeaderProperties($union->{PROPERTIES}, []);
}
pidl $tail if defined($tail);
}
#####################################################################
# parse a pipe
sub HeaderPipe($$;$)
{
my($pipe,$name,$tail) = @_;
my $struct = $pipe->{DATA};
my $e = $struct->{ELEMENTS}[1];
pidl "struct $name;\n";
pidl "struct $struct->{NAME} {\n";
$tab_depth++;
pidl tabs()."uint32_t count;\n";
pidl tabs().mapTypeName($e->{TYPE})." *array;\n";
$tab_depth--;
pidl "}";
if (defined $struct->{PROPERTIES}) {
HeaderProperties($struct->{PROPERTIES}, []);
}
pidl $tail if defined($tail);
}
#####################################################################
# parse a type
sub HeaderType($$$;$)
{
my($e,$data,$name,$tail) = @_;
if (ref($data) eq "HASH") {
($data->{TYPE} eq "ENUM") && HeaderEnum($data, $name, $tail);
($data->{TYPE} eq "BITMAP") && HeaderBitmap($data, $name);
($data->{TYPE} eq "STRUCT") && HeaderStruct($data, $name, $tail);
($data->{TYPE} eq "UNION") && HeaderUnion($data, $name, $tail);
($data->{TYPE} eq "PIPE") && HeaderPipe($data, $name, $tail);
return;
}
if (has_property($e, "charset")) {
pidl "const char";
} else {
pidl mapTypeName($e->{TYPE});
}
pidl $tail if defined($tail);
}
#####################################################################
# parse a typedef
sub HeaderTypedef($;$)
{
my($typedef,$tail) = @_;
# Don't print empty "enum foo;", since some compilers don't like it.
return if ($typedef->{DATA}->{TYPE} eq "ENUM" and not defined($typedef->{DATA}->{ELEMENTS}));
HeaderType($typedef, $typedef->{DATA}, $typedef->{NAME}, $tail) if defined ($typedef->{DATA});
}
#####################################################################
# parse a const
sub HeaderConst($)
{
my($const) = shift;
if (!defined($const->{ARRAY_LEN}[0])) {
pidl "#define $const->{NAME}\t( $const->{VALUE} )\n";
} else {
pidl "#define $const->{NAME}\t $const->{VALUE}\n";
}
}
sub ElementDirection($)
{
my ($e) = @_;
return "inout" if (has_property($e, "in") and has_property($e, "out"));
return "in" if (has_property($e, "in"));
return "out" if (has_property($e, "out"));
return "inout";
}
#####################################################################
# parse a function
sub HeaderFunctionInOut($$)
{
my($fn,$prop) = @_;
return unless defined($fn->{ELEMENTS});
foreach my $e (@{$fn->{ELEMENTS}}) {
HeaderElement($e) if (ElementDirection($e) eq $prop);
}
}
#####################################################################
# determine if we need an "in" or "out" section
sub HeaderFunctionInOut_needed($$)
{
my($fn,$prop) = @_;
return 1 if ($prop eq "out" && defined($fn->{RETURN_TYPE}));
return undef unless defined($fn->{ELEMENTS});
foreach my $e (@{$fn->{ELEMENTS}}) {
return 1 if (ElementDirection($e) eq $prop);
}
return undef;
}
my %headerstructs;
#####################################################################
# parse a function
sub HeaderFunction($)
{
my($fn) = shift;
return if ($headerstructs{$fn->{NAME}});
$headerstructs{$fn->{NAME}} = 1;
pidl "\nstruct $fn->{NAME} {\n";
$tab_depth++;
my $needed = 0;
if (HeaderFunctionInOut_needed($fn, "in") or
HeaderFunctionInOut_needed($fn, "inout")) {
pidl tabs()."struct {\n";
$tab_depth++;
HeaderFunctionInOut($fn, "in");
HeaderFunctionInOut($fn, "inout");
$tab_depth--;
pidl tabs()."} in;\n\n";
$needed++;
}
if (HeaderFunctionInOut_needed($fn, "out") or
HeaderFunctionInOut_needed($fn, "inout")) {
pidl tabs()."struct {\n";
$tab_depth++;
HeaderFunctionInOut($fn, "out");
HeaderFunctionInOut($fn, "inout");
if (defined($fn->{RETURN_TYPE})) {
pidl tabs().mapTypeName($fn->{RETURN_TYPE}) . " result;\n";
}
$tab_depth--;
pidl tabs()."} out;\n\n";
$needed++;
}
if (!$needed) {
# sigh - some compilers don't like empty structures
pidl tabs()."int _dummy_element;\n";
}
$tab_depth--;
pidl "};\n\n";
}
sub HeaderImport
{
my @imports = @_;
foreach my $import (@imports) {
$import = unmake_str($import);
$import =~ s/\.idl$//;
pidl choose_header("librpc/gen_ndr/$import\.h", "gen_ndr/$import.h") . "\n";
}
}
sub HeaderInclude
{
my @includes = @_;
foreach (@includes) {
pidl "#include $_\n";
}
}
#####################################################################
# parse the interface definitions
sub HeaderInterface($)
{
my($interface) = shift;
pidl "#ifndef _HEADER_$interface->{NAME}\n";
pidl "#define _HEADER_$interface->{NAME}\n\n";
foreach my $c (@{$interface->{CONSTS}}) {
HeaderConst($c);
}
foreach my $t (@{$interface->{TYPES}}) {
HeaderTypedef($t, ";\n\n") if ($t->{TYPE} eq "TYPEDEF");
HeaderStruct($t, $t->{NAME}, ";\n\n") if ($t->{TYPE} eq "STRUCT");
HeaderUnion($t, $t->{NAME}, ";\n\n") if ($t->{TYPE} eq "UNION");
HeaderEnum($t, $t->{NAME}, ";\n\n") if ($t->{TYPE} eq "ENUM");
HeaderBitmap($t, $t->{NAME}) if ($t->{TYPE} eq "BITMAP");
HeaderPipe($t, $t->{NAME}, "\n\n") if ($t->{TYPE} eq "PIPE");
}
foreach my $fn (@{$interface->{FUNCTIONS}}) {
HeaderFunction($fn);
}
pidl "#endif /* _HEADER_$interface->{NAME} */\n";
}
sub HeaderQuote($)
{
my($quote) = shift;
pidl unmake_str($quote->{DATA}) . "\n";
}
#####################################################################
# parse a parsed IDL into a C header
sub Parse($)
{
my($ndr) = shift;
$tab_depth = 0;
$res = "";
%headerstructs = ();
pidl "/* header auto-generated by pidl */\n\n";
my $ifacename = "";
# work out a unique interface name
foreach (@{$ndr}) {
if ($_->{TYPE} eq "INTERFACE") {
$ifacename = $_->{NAME};
last;
}
}
pidl "#ifndef _PIDL_HEADER_$ifacename\n";
pidl "#define _PIDL_HEADER_$ifacename\n\n";
if (!is_intree()) {
pidl "#include <util/data_blob.h>\n";
}
pidl "#include <stdint.h>\n";
pidl "\n";
# FIXME: Include this only if NTSTATUS was actually used
pidl choose_header("libcli/util/ntstatus.h", "core/ntstatus.h") . "\n";
pidl "\n";
foreach (@{$ndr}) {
($_->{TYPE} eq "CPP_QUOTE") && HeaderQuote($_);
($_->{TYPE} eq "INTERFACE") && HeaderInterface($_);
($_->{TYPE} eq "IMPORT") && HeaderImport(@{$_->{PATHS}});
($_->{TYPE} eq "INCLUDE") && HeaderInclude(@{$_->{PATHS}});
}
pidl "#endif /* _PIDL_HEADER_$ifacename */\n";
return $res;
}
sub GenerateStructEnv($$)
{
my ($x, $v) = @_;
my %env;
foreach my $e (@{$x->{ELEMENTS}}) {
$env{$e->{NAME}} = "$v->$e->{NAME}";
}
$env{"this"} = $v;
return \%env;
}
sub EnvSubstituteValue($$)
{
my ($env,$s) = @_;
# Substitute the value() values in the env
foreach my $e (@{$s->{ELEMENTS}}) {
next unless (defined(my $v = has_property($e, "value")));
$env->{$e->{NAME}} = ParseExpr($v, $env, $e);
}
return $env;
}
sub GenerateFunctionInEnv($;$)
{
my ($fn, $base) = @_;
my %env;
$base = "r->" unless defined($base);
foreach my $e (@{$fn->{ELEMENTS}}) {
if (grep (/in/, @{$e->{DIRECTION}})) {
$env{$e->{NAME}} = $base."in.$e->{NAME}";
}
}
return \%env;
}
sub GenerateFunctionOutEnv($;$)
{
my ($fn, $base) = @_;
my %env;
$base = "r->" unless defined($base);
foreach my $e (@{$fn->{ELEMENTS}}) {
if (grep (/out/, @{$e->{DIRECTION}})) {
$env{$e->{NAME}} = $base."out.$e->{NAME}";
} elsif (grep (/in/, @{$e->{DIRECTION}})) {
$env{$e->{NAME}} = $base."in.$e->{NAME}";
}
}
return \%env;
}
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