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Diffstat (limited to 'source4/build/pidl/eparser.pm')
| -rw-r--r-- | source4/build/pidl/eparser.pm | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/source4/build/pidl/eparser.pm b/source4/build/pidl/eparser.pm new file mode 100644 index 0000000000..835173a66f --- /dev/null +++ b/source4/build/pidl/eparser.pm @@ -0,0 +1,216 @@ +################################################### +# Ethereal parser generator for IDL structures +# Copyright tpot@samba.org 2001 +# Copyright tridge@samba.org 2000 +# released under the GNU GPL + +package IdlEParser; + +use Data::Dumper; + +my($res); + +##################################################################### +# parse a properties list +sub ParseProperties($) +{ + my($props) = shift; + foreach my $d (@{$props}) { + if (ref($d) ne "HASH") { + $res .= "[$d] "; + } else { + foreach my $k (keys %{$d}) { + $res .= "[$k($d->{$k})] "; + } + } + } +} + +##################################################################### +# parse a structure element +sub ParseElement($) +{ + my($element) = shift; + (defined $element->{PROPERTIES}) && ParseProperties($element->{PROPERTIES}); + ParseType($element->{TYPE}); + $res .= " "; + if ($element->{POINTERS}) { + for (my($i)=0; $i < $element->{POINTERS}; $i++) { + $res .= "*"; + } + } + $res .= "$element->{NAME}"; + (defined $element->{ARRAY_LEN}) && ($res .= "[$element->{ARRAY_LEN}]"); +} + +##################################################################### +# parse a struct +sub ParseStruct($) +{ + my($struct) = shift; + + if (defined $struct->{ELEMENTS}) { + + # Parse scalars + + $res .= "\t/* Parse scalars */\n\n"; + + foreach my $e (@{$struct->{ELEMENTS}}) { + if (defined $e->{POINTERS}) { + $res .= "\tptr_$e->{NAME} = prs_$e->{TYPE}_ptr(); /* $e->{NAME} */\n"; + } else { + $res .= "\tprs_$e->{TYPE}(); /* $e->{NAME} */\n"; + } + } + + # Parse buffers + + $res .= "\n\t/* Parse buffers */\n\n"; + + foreach my $e (@{$struct->{ELEMENTS}}) { + $res .= "\tif (ptr_$e->{NAME})\n\t\tprs_$e->{TYPE}(); /* $e->{NAME} */\n\n", + if (defined $e->{POINTERS}); + } + } +} + + +##################################################################### +# parse a union element +sub ParseUnionElement($) +{ + my($element) = shift; + $res .= "[case($element->{CASE})] "; + ParseElement($element->{DATA}); + $res .= ";\n"; +} + +##################################################################### +# parse a union +sub ParseUnion($) +{ + my($union) = shift; + (defined $union->{PROPERTIES}) && ParseProperties($union->{PROPERTIES}); + $res .= "union {\n"; + foreach my $e (@{$union->{DATA}}) { + ParseUnionElement($e); + } + $res .= "}"; +} + +##################################################################### +# parse a type +sub ParseType($) +{ + my($data) = shift; + if (ref($data) eq "HASH") { + ($data->{TYPE} eq "STRUCT") && + ParseStruct($data); + ($data->{TYPE} eq "UNION") && + ParseUnion($data); + } else { + $res .= "$data"; + } +} + +##################################################################### +# parse a typedef +sub ParseTypedef($) +{ + my($typedef) = shift; + $res .= "void prs_$typedef->{NAME}(void)\n{\n"; + ParseType($typedef->{DATA}); + $res .= "}\n\n"; +} + +##################################################################### +# parse a function +sub ParseFunctionArg($$) +{ + my($arg) = shift; + my($io) = shift; # "in" or "out" + + if (@{$arg->{PROPERTIES}}[0] =~ /$io/) { + my $is_pol = 0; + + # Arg is a policy handle - no pointer + + foreach my $prop (@{$arg->{PROPERTIES}}) { + if ($prop =~ /context_handle/) { + $res .= "\tprs_policy_hnd();"; + $is_pol = 1; + } + } + + if (!$is_pol) { + if ($arg->{POINTERS}) { + $res .= "\tptr_$arg->{NAME} = prs_ptr();\n"; + $res .= "\tif (ptr_$arg->{NAME})\n\t\tprs_$arg->{TYPE}();"; + } else { + $res .= "\tprs_$arg->{TYPE}();"; + } + } + + $res .= "\t/* $arg->{NAME} */\n"; + } +} + +##################################################################### +# parse a function +sub ParseFunction($) +{ + my($function) = shift; + + # Input function + + $res .= "void $function->{NAME}_q(void)\n{\n"; + + foreach my $arg (@{$function->{DATA}}) { + ParseFunctionArg($arg, "in"); + } + + $res .= "}\n\n"; + + # Output function + + $res .= "void $function->{NAME}_r(void)\n{\n"; + + foreach my $arg (@{$function->{DATA}}) { + ParseFunctionArg($arg, "out"); + } + + $res .= "\tprs_$function->{RETURN_TYPE}();\t/* Return value */\n"; + + $res .= "}\n\n"; + +} + +##################################################################### +# parse the interface definitions +sub ParseInterface($) +{ + my($interface) = shift; + my($data) = $interface->{DATA}; + foreach my $d (@{$data}) { + ($d->{TYPE} eq "TYPEDEF") && + ParseTypedef($d); + ($d->{TYPE} eq "FUNCTION") && + ParseFunction($d); + } +} + + +##################################################################### +# parse a parsed IDL structure back into an IDL file +sub Parse($) +{ + my($idl) = shift; + $res = "/* parser auto-generated by pidl */\n\n"; + foreach my $x (@{$idl}) { + ($x->{TYPE} eq "INTERFACE") && + ParseInterface($x); + } + return $res; +} + +1; |