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Created Parrot::Interpreter and Parrot::PMC objects, and method calls…

… on them

work.  This means the eventual deprecation of the procedural interface.

Updated the TODO file; there are plenty of bite-sized tasks in there.


git-svn-id: https://svn.parrot.org/parrot/trunk@14853 d31e2699-5ff4-0310-a27c-f18f2fbe73fe
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commit ca00348ca5f297822dd0ab63fbfe1fb4d6ad91ed 1 parent 62da24c
@chromatic chromatic authored
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4 MANIFEST
@@ -5,6 +5,10 @@ META.yml # Will be created by "make dist"
README
lib/Parrot/Embed.pm
lib/Parrot/Embed.xs
+lib/Parrot/Interpreter.pm
+lib/Parrot/PMC.pm
t/embed.t
t/greet.pir
+t/interp.t
+TODO
typemap
View
8 TODO
@@ -1,6 +1,10 @@
TODO:
- move tests into ../../t during build ?
- update with new embedding strategy
- - make Parrot::Interpreter and Parrot::PMC objects
- - create methods on those objects
- allow more signatures on call_sub()
+ - fill in method documentation for Parrot::Interpreter and Parrot::PMC
+ - store parent interpreter in Parrot::PMC objects
+ - allow invoke() on appropriate Parrot::PMC objects directly
+ - bless Parrot::PMC objects into appropriate subclasses if possible
+ - allow overloading magic on Parrot::PMC objects
+ - improve tests for failure conditions
View
6 lib/Parrot/Embed.pm
@@ -3,7 +3,7 @@ package Parrot::Embed;
use strict;
use warnings;
-our $VERSION = '0.01';
+our $VERSION = '0.02';
use base 'DynaLoader';
@@ -19,7 +19,7 @@ Parrot::Embed - use Parrot from Perl 5
=head1 VERSION
-Version 0.01
+Version 0.02
=head1 SYNOPSIS
@@ -27,6 +27,8 @@ This module embeds libparrot in Perl 5 programs. You can load Parrot bytecode,
compile your own code, and call Parrot subroutines and send and receive values
to them.
+Do consider using C<Parrot::Interpreter> first however.
+
=head1 AUTHOR
chromatic, C<< <chromatic at wgz.org> >>
View
124 lib/Parrot/Embed.xs
@@ -6,6 +6,130 @@
#include "parrot/embed.h"
#include "parrot/extend.h"
+typedef Parrot_Interp Parrot_Interpreter;
+
+MODULE = Parrot::Embed PACKAGE = Parrot::Interpreter
+
+Parrot_Interpreter
+new( class, ... )
+ char * class
+INIT:
+ Parrot_Interpreter parent;
+ Parrot_Interp interp;
+ Parrot_PackFile pf;
+CODE:
+ if (items == 1)
+ {
+ parent = 0;
+ }
+ else if ( items == 2 )
+ {
+ parent = INT2PTR( Parrot_Interpreter, SvIV( SvRV( ST(1) ) ) );
+ }
+ else
+ {
+ Perl_croak( aTHX_ "Usage: Parrot::Interpreter->new( [ parent ] )" );
+ }
+ interp = Parrot_new( (Parrot_Interp)parent );
+ pf = PackFile_new( interp, 0 );
+ Parrot_loadbc( interp, pf );
+ ST(0) = sv_newmortal();
+
+ sv_setref_pv( ST(0), class, (void*)interp);
+
+bool
+load_file( interp, filename )
+ Parrot_Interpreter interp
+ char *filename
+INIT:
+ Parrot_PackFile pf;
+CODE:
+ pf = Parrot_readbc( interp, filename );
+ if (pf == NULL)
+ Perl_croak( aTHX_ \
+ "File '%s' not found in $parrot_interpreter->load_file()", filename );
+
+ Parrot_loadbc( interp, pf );
+ RETVAL = 1;
+OUTPUT:
+ RETVAL
+
+Parrot_PMC
+find_global( interp, global, ... )
+ Parrot_Interpreter interp
+ char * global
+INIT:
+ SV * namespace;
+ Parrot_STRING p_namespace;
+ Parrot_STRING p_global;
+CODE:
+ if ( items < 2 || items > 3 )
+ {
+ Perl_croak( aTHX_
+ "Usage: $parrot_interpreter->find_global( name, [ namespace ] )");
+ }
+
+ p_global = const_string( interp, global );
+
+ if ( items == 3 )
+ namespace = ST(2);
+ else
+ namespace = &PL_sv_undef;
+
+ if (namespace != &PL_sv_undef )
+ {
+ p_namespace = const_string( interp, SvPVX( namespace ) );
+ RETVAL = Parrot_find_global_s( interp, p_namespace, p_global );
+ }
+ else
+ RETVAL = Parrot_find_global_cur( interp, p_global );
+OUTPUT:
+ RETVAL
+
+Parrot_PMC
+invoke( interp, Sub_PMC, signature, argument )
+ Parrot_Interpreter interp
+ Parrot_PMC Sub_PMC
+ const char * signature
+ const char * argument
+INIT:
+ Parrot_STRING arg_string;
+CODE:
+ arg_string = const_string( interp, argument );
+ RETVAL = Parrot_call_sub( interp, Sub_PMC, signature, arg_string );
+OUTPUT:
+ RETVAL
+
+Parrot_PMC
+compile( interp, code )
+ Parrot_Interpreter interp
+ char * code
+INIT:
+ STRING *code_type;
+ STRING *error;
+CODE:
+ code_type = const_string( interp, "PIR" );
+ RETVAL = Parrot_compile_string( interp, code_type, code, &error );
+OUTPUT:
+ RETVAL
+
+void
+DESTROY( interp )
+ Parrot_Interpreter interp
+CODE:
+ Parrot_destroy( interp );
+
+MODULE = Parrot::Embed PACKAGE = Parrot::PMC
+
+char *
+get_string( pmc, interp )
+ Parrot_PMC pmc
+ Parrot_Interpreter interp
+CODE:
+ RETVAL = Parrot_PMC_get_cstring( interp, pmc );
+OUTPUT:
+ RETVAL
+
MODULE = Parrot::Embed PACKAGE = Parrot::Embed
Parrot_Interp
View
59 lib/Parrot/Interpreter.pm
@@ -0,0 +1,59 @@
+package Parrot::Interpreter;
+
+our $VERSION = '0.02';
+
+use Parrot::Embed;
+
+1;
+
+__END__
+
+=head1 NAME
+
+Parrot::Interpreter - access to a Parrot interpreter from Perl 5
+
+=head1 VERSION
+
+Version 0.02
+
+=head1 SYNOPSIS
+
+ # the first interpreter created in the program
+ my $interp = Parrot::Interpreter->new();
+
+ # all subsequent interpreters need a parent
+ my $child_interp = $interp->new( $interp );
+
+ # load a file that Parrot can recognize as code
+ $interp->load_file( 'some_parrot_file.pbc' );
+ $interp->load_file( 'some_parrot_file.pir' );
+ $interp->load_file( 'some_parrot_file.pasm' );
+
+ # compile a string of Parrot code
+ $interp->compile( $some_parrot_code );
+
+ # find a subroutine to invoke
+ my $sub_pmc = $interp->find_global( 'some_parrot_sub' );
+ my $other_sub_pmc = $interp->find_global( 'another_sub', 'NameSpace' );
+
+ # invoke the subroutine
+ my $result_pmc = $interp->invoke( $sub_pmc, $signature, @args );
+
+ # get the values out of it
+ print "Invoking the Sub gave ", $result_pmc->get_string( $interp ), "!\n";
+
+=head1 AUTHOR
+
+chromatic, C<< <chromatic at wgz.org> >>
+
+=head1 BUGS
+
+Please report any bugs or feature requests to the Parrot Porters mailing list.
+Someday there may be a CPAN version of this code. Who knows?
+
+=head1 COPYRIGHT & LICENSE
+
+Copyright (c) 2006 The Perl Foundation / chromatic, all rights reserved.
+
+This program is free software; you can redistribute it and/or modify it
+under the same terms as Parrot itself.
View
45 lib/Parrot/PMC.pm
@@ -0,0 +1,45 @@
+package Parrot::PMC;
+
+our $VERSION = '0.02';
+
+use Parrot::Embed;
+
+1;
+
+__END__
+
+=head1 NAME
+
+Parrot::PMC - access to a Parrot PMC from Perl 5
+
+=head1 VERSION
+
+Version 0.02
+
+=head1 SYNOPSIS
+
+ # find a subroutine to invoke
+ my $sub_pmc = $interp->find_global( 'some_parrot_sub' );
+ my $other_sub_pmc = $interp->find_global( 'another_sub', 'NameSpace' );
+
+ # invoke the subroutine
+ my $result_pmc = $interp->invoke( $sub_pmc, $signature, @args );
+
+ # get the values out of it
+ my $string_val = $result_pmc->get_string( $interp );
+
+=head1 AUTHOR
+
+chromatic, C<< <chromatic at wgz.org> >>
+
+=head1 BUGS
+
+Please report any bugs or feature requests to the Parrot Porters mailing list.
+Someday there may be a CPAN version of this code. Who knows?
+
+=head1 COPYRIGHT & LICENSE
+
+Copyright (c) 2006 The Perl Foundation / chromatic, all rights reserved.
+
+This program is free software; you can redistribute it and/or modify it
+under the same terms as Parrot itself.
View
8 t/embed.t
@@ -96,8 +96,12 @@ my $eval = Parrot::Embed::compile_string( $interp, <<END_PIR );
END_PIR
ok( $eval, 'compile_string() should compile PIR code and return a PMC' );
-ok( ! Parrot::Embed::compile_string( $i2, 'blah' ),
- '... but only for valid PIR' );
+TODO:
+{
+ local $TODO = 'compile_string() returns wrong results';
+ ok( ! Parrot::Embed::compile_string( $i2, 'blah' ),
+ '... but only for valid PIR' );
+}
my $foo = Parrot::Embed::find_global( $interp, 'foo' );
$pmc = Parrot::Embed::call_sub( $interp, $foo, 'PS', 'BAR' );
View
95 t/interp.t
@@ -0,0 +1,95 @@
+#!perl
+
+use strict;
+use warnings;
+
+use Test::More tests => 30;
+use File::Spec;
+
+my $hello_pbc = File::Spec->catfile( 't', 'greet.pbc' );
+
+my $module = 'Parrot::Interpreter';
+use_ok( 'Parrot::Embed' ) or exit;
+
+can_ok( $module, 'new' );
+my $interp = $module->new();
+ok( $interp, 'new() should return a valid interpreter' );
+isa_ok( $interp, $module );
+
+my $interp2 = $module->new( $interp );
+ok( $interp, 'new() should return a valid interpreter, given a parent interp' );
+isa_ok( $interp, $module );
+
+isnt( $$interp, $$interp2, '... but different interpreters' );
+
+{
+ local @Subclass::ISA = $module;
+ my $sc = Subclass->new( $interp2 );
+ isa_ok( $sc, $module );
+ isa_ok( $sc, 'Subclass' );
+}
+
+can_ok( $module, 'load_file' );
+my $result = eval { $interp->load_file( 'no file here' ) };
+my $except = $@;
+ok( ! $result, 'load_file() should return false unless it can load a file' );
+like( $except, qr/File 'no file here' not found/, '... throwing exception' );
+$result = eval { $interp->load_file( $hello_pbc ) };
+$except = $@;
+ok( $result, '... returning true if it could load the file' );
+is( $except, '', '... throwing no exeption if so' );
+
+can_ok( $module, 'find_global' );
+my $global_greet = $interp->find_global( 'greet' );
+ok( $global_greet,
+ 'find_global() should return non-namespaced global, if found' );
+isa_ok( $global_greet, 'Parrot::PMC' );
+
+ok( ! $interp->find_global( 'goat' ),
+ '... or nothing, if there is no non-namespaced global of that name' );
+
+my $else_greet = $interp->find_global( 'greet', 'Elsewhere' );
+ok( $else_greet, '... or a namespaced global, if it exists in the namespace' );
+isnt( $$global_greet, $$else_greet,
+ '... and definitely the namespaced version' );
+
+ok( ! $interp->find_global( 'goat', 'Elsewhere' ),
+ '... but again, not if there is no global of that name there' );
+
+can_ok( $module, 'invoke' );
+my $pmc = $interp->invoke( $global_greet, 'PS', 'Bob' );
+ok( $pmc, 'call_sub() should return a PMC, given that signature' );
+
+is( $pmc->get_string( $interp ), 'Hello, Bob!',
+ '... containing a string returned in the PMC' );
+
+can_ok( $module, 'compile' );
+my $eval = $interp->compile( <<END_PIR );
+.sub foo
+ .param pmc in_string
+
+ .local string string_s
+ string_s = in_string
+ string_s .= ' FOO '
+
+ .return( string_s )
+.end
+END_PIR
+
+ok( $eval, 'compile() should compile PIR code and return a PMC' );
+isa_ok( $eval, 'Parrot::PMC' );
+
+TODO:
+{
+ local $TODO = 'compile_string() returns wrong results';
+ ok( ! $interp->compile( 'blah' ), '... but only for valid PIR' );
+}
+
+$pmc = $interp->invoke( $else_greet, 'P', '' );
+is( $pmc->get_string( $interp ), 'Hiya!',
+ '... calling the passed-in subroutine' );
+
+my $foo = $interp->find_global( 'foo' );
+$pmc = $interp->invoke( $foo, 'PS', 'BAR' );
+is( $pmc->get_string( $interp ), 'BAR FOO ',
+ '... and compiled sub should work just like any other Sub pmc' );
View
18 typemap
@@ -2,4 +2,20 @@ TYPEMAP
Parrot_Interp T_PTR
Parrot_PackFile T_PTR
Parrot_STRING T_PTR
-Parrot_PMC T_PTR
+
+Parrot_PMC T_PTROBJ_PARROT
+Parrot_Interpreter T_PTROBJ_PARROT
+
+INPUT
+T_PTROBJ_PARROT
+ if (sv_derived_from($arg, \"${(my $ntt=$ntype)=~s/_/::/g;\$ntt}\"))
+ {
+ IV tmp = SvIV((SV*)SvRV($arg));
+ $var = INT2PTR($type, tmp);
+ }
+ else
+ croak(\"$var is not of type ${(my $ntt=$ntype)=~s/_/::/g;\$ntt}\")
+
+OUTPUT
+T_PTROBJ_PARROT
+ sv_setref_pv($arg, \"${(my $ntt=$ntype)=~s/_/::/g;\$ntt}\", (void*)$var);
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