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nci_thunk_gen.pir
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nci_thunk_gen.pir
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# Copyright (C) 2010, Parrot Foundation.
=head1 NAME
tools/dev/nci_thunk_gen.pir - Build up native call thunk routines
=head1 SYNOPSIS
% ./parrot tools/dev/nci_thunk_gen.pir -o src/nci/extra_thunks.c <src/nci/extra_thunks.nci
=head1 DESCRIPTION
This script creates Native Call Interface files. It parses a file of function
signatures of the form:
<return-type-specifier><ws><parameter-type-specifiers>[<ws>][#<comment>]
...
Empty lines and lines containing only whitespace or comment are ignored.
The types specifiers are documented in F<src/nci/extra_thunks.nci>.
=head1 SEE ALSO
F<src/nci/extra_thunks.nci>.
F<docs/pdds/pdd16_native_call.pod>.
=cut
.macro_const VERSION 0.01
.macro_const SIG_TABLE_GLOBAL_NAME 'signature_table'
.macro_const OPTS_GLOBAL_NAME 'options'
.sub 'main' :main
.param pmc argv
# initialize global variables
'gen_sigtable'()
'get_options'(argv)
.local string targ
targ = 'read_from_opts'('target')
.local pmc sigs
sigs = 'read_sigs'()
$S0 = 'read_from_opts'('output')
$P0 = new ['FileHandle']
$P0.'open'($S0, 'w')
$P1 = getinterp
$P1.'stdout_handle'($P0)
if targ == 'head' goto get_targ
if targ == 'thunks' goto get_targ
if targ == 'loader' goto get_targ
if targ == 'loader-dynext' goto get_dynext_loader
if targ == 'coda' goto get_targ
if targ == 'all' goto all
if targ == 'all-dynext' goto all_dynext
if targ == 'names' goto names
if targ == 'signatures' goto signatures
# unknown target
$S0 = 'sprintf'("Unknown target type '%s'", targ)
die $S0
all:
$S0 = 'get_head'(sigs)
say $S0
$S0 = 'get_thunks'(sigs)
say $S0
$S0 = 'get_loader'(sigs)
say $S0
$S0 = 'get_coda'(sigs)
say $S0
exit 0
all_dynext:
$S0 = 'get_head'(sigs)
say $S0
$S0 = 'get_thunks'(sigs)
say $S0
$S0 = 'get_dynext_loader'(sigs)
say $S0
$S0 = 'get_coda'(sigs)
say $S0
exit 0
get_dynext_loader:
$S0 = 'get_dynext_loader'(sigs)
say $S0
exit 0
get_targ:
$S0 = concat 'get_', targ
$P0 = get_global $S0
$S1 = $P0(sigs)
say $S1
exit 0
names:
die "names not yet implemented"
signatures:
die "signatures not yet implemented"
.end
# getopt stuff {{{
.macro_const OUTPUT 'output'
.macro_const THUNK_STORAGE_CLASS 'thunk-storage-class'
.macro_const THUNK_NAME_PROTO 'thunk-name-proto'
.macro_const LOADER_STORAGE_CLASS 'loader-storage-class'
.macro_const LOADER_NAME 'loader-name'
.macro_const CORE 'core'
.macro_const NO_WARN_DUPS 'no-warn-dups'
.sub 'get_options'
.param pmc argv
load_bytecode 'Getopt/Obj.pbc'
.local pmc getopt
getopt = new ['Getopt';'Obj']
push getopt, 'help|h'
push getopt, 'version|v'
push getopt, 'no-warn-dups|f'
push getopt, 'core'
push getopt, 'dynext'
push getopt, 'output|o=s'
push getopt, 'target=s'
push getopt, 'thunk-storage-class=s'
push getopt, 'thunk-name-proto=s'
push getopt, 'loader-storage-class=s'
push getopt, 'loader-name=s'
.local string prog_name
prog_name = shift argv
.local pmc opt
opt = getopt.'get_options'(argv)
$I0 = opt['help']
if $I0 goto print_help
$I0 = opt['version']
if $I0 goto print_version
'fixup_opts'(opt)
set_global .OPTS_GLOBAL_NAME, opt
.return()
print_help:
'usage'(prog_name)
print_version:
'version'(prog_name)
.end
.sub 'usage'
.param string prog_name
print prog_name
say ' - Parrot NCI thunk library creation utility'
say <<'USAGE'
Creates a C file of routines suitable for use as Parrot NCI thunks.
Usage ./parrot nci_thunk_gen.pir [options] -o output_c_file.c <input_signature_list.nci
Options
--help print this message and exit
--version print the version number of this utility
-f --no-warn-dups don't complain about duplicated signatures. Default is to warn.
--core output a thunks file suitable for inclusion in Parrot core. Default is no.
--dynext use default values for loader-name, loader-storage-class, and target
suitable for use in a Parrot dynext library.
-o --output <file> specify output file to use.
--target <target> select what to output (valid options are 'head', 'thunks',
'loader', 'loader-dynext', 'coda', 'all', 'all-dynext', 'names', and
'signatures'). Default value is 'all'
--thunk-storage-class <storage class>
set the storage class used for the thunks. Default value is 'static'.
--thunk-name-proto <printf prototype>
set the prototype used for the thunk function names. Must be a printf
format with arity 1. Default value is 'pcf_%s'
--loader-storage-class
set the storage class used for the loader function. Default value is none.
--loader-name set the name used for the loader function. Default value is
'Parrot_load_nci_thunks'.
USAGE
exit 0
.end
.sub 'version'
.param string prog_name
print prog_name
print ' version '
say .VERSION
exit 0
.end
.sub 'fixup_opts'
.param pmc opts
$I0 = defined opts['no-warn-dups']
if $I0 goto end_no_warn_dups
opts['no-warn-dups'] = ''
end_no_warn_dups:
$I0 = defined opts['core']
if $I0 goto in_core
opts['core'] = ''
goto end_core
in_core:
opts['core'] = 'true'
end_core:
$I0 = defined opts['dynext']
if $I0 goto is_dynext
opts['dynext'] = ''
goto end_dynext
is_dynext:
$I0 = defined opts['target']
if $I0 goto end_dynext_target
opts['target'] = 'all-dynext'
end_dynext_target:
$I0 = defined opts['loader-storage-class']
if $I0 goto end_dynext_loader_storage_class
opts['loader-storage-class'] = 'PARROT_DYNEXT_EXPORT'
end_dynext_loader_storage_class:
$I0 = defined opts['loader-name']
if $I0 goto end_dynext_loader_name
$S0 = opts['output']
($S0, $S1, $S0) = 'file_basename'($S0, '.c')
$S0 = 'sprintf'('Parrot_lib_%s_init', $S1)
opts['loader-name'] = $S0
end_dynext_loader_name:
end_dynext:
$I0 = defined opts['target']
if $I0 goto end_target
opts['target'] = 'all'
end_target:
$I0 = defined opts['thunk-storage-class']
if $I0 goto end_thunk_storage_class
opts['thunk-storage-class'] = 'static'
end_thunk_storage_class:
$I0 = defined opts['thunk-name-proto']
if $I0 goto end_thunk_name_proto
opts['thunk-name-proto'] = 'pcf_%s'
end_thunk_name_proto:
$S0 = opts['thunk-name-proto']
$I0 = 'printf_arity'($S0)
if $I0 == 1 goto end_thunk_name_proto_printf_arity
'sprintf'("Provided proto for 'thunk-name-proto' is of incorrect arity %i (expected 1)", $I0)
die $S0
end_thunk_name_proto_printf_arity:
$I0 = defined opts['loader-storage-class']
if $I0 goto end_loader_storage_class
opts['loader-storage-class'] = ''
end_loader_storage_class:
$I0 = defined opts['loader-name']
if $I0 goto end_loader_name
opts['loader-name'] = 'Parrot_load_nci_thunks'
end_loader_name:
.end
.sub 'read_from_opts'
.param string key
.local pmc opts
opts = get_global .OPTS_GLOBAL_NAME
$I0 = defined opts[key]
unless $I0 goto not_present
$S0 = opts[key]
.return ($S0)
not_present:
$S0 = 'sprintf'("Parameter '%s' required but not provided", key)
die $S0
.end
# }}}
# get_{head,thunks,loader,dynext_loader,coda} {{{
.sub 'get_head'
.param pmc ignored :slurpy
.local string in_core
in_core = 'read_from_opts'(.CORE)
.local string ext_defn
ext_defn = ''
if in_core goto end_ext_defn
ext_defn = '#define PARROT_IN_EXTENSION'
end_ext_defn:
.local string c_file
c_file = 'read_from_opts'(.OUTPUT)
.local string str_file
($S0, str_file, $S0) = 'file_basename'(c_file, '.c')
str_file = concat str_file, '.str'
.local string head
head = 'sprintf'(<<'HEAD', c_file, ext_defn, str_file)
/* ex: set ro ft=c:
* !!!!!!! DO NOT EDIT THIS FILE !!!!!!!
*
* This file is generated automatically by tools/dev/nci_thunk_gen.pir
*
* Any changes made here will be lost!
*
*/
/* %s
* Copyright (C) 2010, Parrot Foundation.
* Overview:
* Native Call Interface routines. The code needed to build a
* parrot to C call frame is in here
* Data Structure and Algorithms:
* History:
* Notes:
* References:
*/
%s
#include "parrot/parrot.h"
#include "parrot/nci.h"
#include "pmc/pmc_nci.h"
#ifdef PARROT_IN_EXTENSION
/* external libraries can't have strings statically compiled into parrot */
# define CONST_STRING(i, s) Parrot_str_new_constant((i), (s))
#else
# include "%s"
#endif
/* HEADERIZER HFILE: none */
/* HEADERIZER STOP */
/* All our static functions that call in various ways. Yes, terribly
hackish, but that is just fine */
HEAD
.return (head)
.end
.sub 'get_thunks'
.param pmc sigs
.local string code
.local int i, n
code = ''
i = 0
n = sigs
loop:
if i >= n goto end_loop
.local pmc sig
sig = sigs[i]
$S0 = 'sig_to_fn_code'(sig :flat)
code = concat code, $S0
inc i
goto loop
end_loop:
.return (code)
.end
.sub 'get_loader'
.param pmc sigs
$S0 = 'get_loader_decl'(sigs)
$S1 = 'get_loader_body'(sigs)
$S2 = 'sprintf'(<<'LOADER', $S0, $S1)
%s {
%s
}
LOADER
.return ($S2)
.end
.sub 'get_loader_decl'
.param pmc sigs
$S0 = 'read_from_opts'(.LOADER_STORAGE_CLASS)
$S1 = 'read_from_opts'(.LOADER_NAME)
$S2 = 'sprintf'(<<'DECL', $S0, $S1)
%s void
%s(PARROT_INTERP)
DECL
.return ($S2)
.end
.sub 'get_dynext_loader'
.param pmc sigs
$S0 = 'get_dynext_loader_decl'(sigs)
$S1 = 'get_loader_body'(sigs)
$S2 = 'sprintf'(<<'LOADER', $S0, $S0, $S1)
%s;
%s {
%s
}
LOADER
.return ($S2)
.end
.sub 'get_dynext_loader_decl'
.param pmc sigs
$S0 = 'read_from_opts'(.LOADER_STORAGE_CLASS)
$S1 = 'read_from_opts'(.LOADER_NAME)
$S2 = 'sprintf'(<<'DECL', $S0, $S1)
%s void
%s(PARROT_INTERP, SHIM(PMC *lib))
DECL
.return ($S2)
.end
.sub 'get_loader_body'
.param pmc sigs
.local string code
code = 'sprintf'(<<'HEADER', $S0, $S1)
PMC * const iglobals = interp->iglobals;
PMC *nci_funcs;
PMC *temp_pmc;
PARROT_ASSERT(!(PMC_IS_NULL(iglobals)));
nci_funcs = VTABLE_get_pmc_keyed_int(interp, iglobals, IGLOBALS_NCI_FUNCS);
PARROT_ASSERT(!(PMC_IS_NULL(nci_funcs)));
HEADER
.local int i, n
i = 0
n = sigs
loop:
if i >= n goto end_loop
.local pmc sig
sig = shift sigs
.local string fn_name
fn_name = 'sig_to_fn_name'(sig :flat)
.local string key
key = join '', sig
$S0 = 'sprintf'(<<'TEMPLATE', fn_name, key)
temp_pmc = Parrot_pmc_new(interp, enum_class_UnManagedStruct);
VTABLE_set_pointer(interp, temp_pmc, (void *)%s);
VTABLE_set_pmc_keyed(interp, nci_funcs,
Parrot_nci_parse_signature(interp, string_from_literal(interp, "%s")),
temp_pmc);
TEMPLATE
code = concat code, $S0
inc i
goto loop
end_loop:
.return (code)
.end
.sub 'get_coda'
.param pmc ignored :slurpy
.return (<<'CODA')
/*
* Local variables:
* c-file-style: "parrot"
* End:
* vim: expandtab shiftwidth=4 cinoptions='\:2=2' :
*/
CODA
.end
# }}}
# sig_to_* {{{
.sub 'sig_to_fn_code'
.param pmc args :slurpy
.local string fn_decl
fn_decl = 'sig_to_fn_decl'(args :flat)
.local string var_decls
var_decls = 'sig_to_var_decls'(args :flat)
.local string preamble
preamble = 'sig_to_preamble'(args :flat)
.local string call
call = 'sig_to_call'(args :flat)
.local string postamble
postamble = 'sig_to_postamble'(args :flat)
.local string fn_code
fn_code = 'sprintf'("%s{\n%s%s%s%s}\n", fn_decl, var_decls, preamble, call, postamble)
.return (fn_code)
.end
.sub 'sig_to_postamble'
.param string ret
.param string params
.local string final_assign
$P0 = 'map_from_sig_table'(ret, 'ret_assign')
final_assign = $P0[0]
.local string extra_postamble
$P0 = 'map_from_sig_table'(params, 'postamble_tmpl')
'fill_tmpls_ascending_ints'($P0)
extra_postamble = join "\n", $P0
.local string postamble
postamble = 'sprintf'(<<'TEMPLATE', final_assign, extra_postamble)
%s
%s
TEMPLATE
.return (postamble)
.end
.sub 'sig_to_call'
.param string ret
.param string params
.local string return_assign
$P0 = 'map_from_sig_table'(ret, 'func_call_assign')
return_assign = $P0[0]
.local string ret_cast
$P0 = 'map_from_sig_table'(ret, 'as_return')
ret_cast = $P0[0]
if ret_cast == 'void' goto void_fn
ret_cast = 'sprintf'('(%s)', ret_cast)
goto end_ret_cast
void_fn:
ret_cast = ''
end_ret_cast:
.local string call_params
$P0 = 'map_from_sig_table'(params, 'call_param_tmpl')
'fill_tmpls_ascending_ints'($P0)
call_params = join ', ', $P0
.local string call
call = 'sprintf'(<<'TEMPLATE', return_assign, ret_cast, call_params)
GETATTR_NCI_orig_func(interp, nci, orig_func);
fn_pointer = (func_t)D2FPTR(orig_func);
%s %s(*fn_pointer)(%s);
TEMPLATE
.return (call)
.end
.sub 'sig_to_preamble'
.param string ret
.param string params
unless params goto return
.local string sig
$P0 = 'map_from_sig_table'(params, 'sig_char')
sig = join "", $P0
.local string fill_params
$P0 = 'map_from_sig_table'(params, 'fill_params_tmpl')
'fill_tmpls_ascending_ints'($P0)
fill_params = join "", $P0
.local string extra_preamble
$P0 = 'map_from_sig_table'(params, 'preamble_tmpl')
'fill_tmpls_ascending_ints'($P0)
extra_preamble = join "", $P0
.local string preamble
preamble = 'sprintf'(<<'TEMPLATE', sig, fill_params, extra_preamble)
Parrot_pcc_fill_params_from_c_args(interp, call_object, "%s"%s);
%s
TEMPLATE
return:
.return (preamble)
.end
.sub 'sig_to_var_decls'
.param string ret
.param string params
.local string ret_csig
$P0 = 'map_from_sig_table'(ret, 'as_return')
ret_csig = $P0[0]
.local string params_csig
$P0 = 'map_from_sig_table'(params, 'as_proto')
params_csig = join ', ', $P0
if params_csig goto end_default_params_csig_to_void
params_csig = 'void'
end_default_params_csig_to_void:
.local string ret_tdecl
ret_tdecl = ""
$P0 = 'map_from_sig_table'(ret, 'return_type')
$S0 = $P0[0]
unless $S0 goto end_ret_type
if $S0 == 'void' goto end_ret_type
$S0 = 'sprintf'("%s return_data;\n", $S0)
ret_tdecl = concat ret_tdecl, $S0
end_ret_type:
$P0 = 'map_from_sig_table'(ret, 'final_dest')
$S0 = $P0[0]
unless $S0 goto end_final_dest
$S0 = concat $S0, "\n"
ret_tdecl = concat ret_tdecl, $S0
end_final_dest:
.local string params_tdecl
$P0 = 'map_from_sig_table'(params, 'temp_tmpl')
'fill_tmpls_ascending_ints'($P0)
$P0 = 'grep_for_true'($P0)
params_tdecl = join ";\n ", $P0
.local string var_decls
var_decls = 'sprintf'(<<'TEMPLATE', ret_csig, params_csig, ret_tdecl, params_tdecl)
typedef %s(* func_t)(%s);
func_t fn_pointer;
void *orig_func;
PMC * const ctx = CURRENT_CONTEXT(interp);
PMC * const call_object = Parrot_pcc_get_signature(interp, ctx);
PMC * ret_object = PMCNULL;
%s
%s;
UNUSED(ret_object);
UNUSED(return_data); /* Potentially unused, at least */
TEMPLATE
.return (var_decls)
.end
.sub 'sig_to_fn_decl'
.param pmc sig :slurpy
.local string storage_class, fn_name, fn_decl
storage_class = 'read_from_opts'(.THUNK_STORAGE_CLASS)
fn_name = 'sig_to_fn_name'(sig :flat)
fn_decl = 'sprintf'(<<'TEMPLATE', storage_class, fn_name)
%s void
%s(PARROT_INTERP, PMC *nci, SHIM(PMC *self))
TEMPLATE
.return (fn_decl)
.end
.sub 'sig_to_fn_name'
.param string ret
.param string params
.local string fix_params
$P0 = 'map_from_sig_table'(params, 'cname')
fix_params = join '', $P0
$S0 = 'sprintf'('%s_%s', ret, fix_params)
$S1 = 'read_from_opts'(.THUNK_NAME_PROTO)
$S2 = 'sprintf'($S1, $S0)
.return ($S2)
.end
.sub 'map_from_sig_table'
.param string sig
.param string field_name
.local pmc sig_table
sig_table = get_global .SIG_TABLE_GLOBAL_NAME
$P0 = split '', sig
.local pmc result
result = new ['ResizableStringArray']
$I0 = $P0
result = $I0
$I0 = $P0
$I1 = 0
loop:
if $I1 >= $I0 goto end_loop
$S0 = $P0[$I1]
$S1 = sig_table[$S0; field_name]
result[$I1] = $S1
inc $I1
goto loop
end_loop:
.return (result)
.end
# }}}
# read_sigs {{{
.sub 'read_sigs'
.local pmc stdin, seen, sigs
$P0 = getinterp
stdin = $P0.'stdin_handle'()
seen = new ['Hash']
sigs = new ['ResizablePMCArray']
.local int no_warn_dups
no_warn_dups = 'read_from_opts'(.NO_WARN_DUPS)
.local int lineno
lineno = 0
read_loop:
unless stdin goto end_read_loop
.local string ret_sig, param_sig, full_sig
(ret_sig, param_sig) = 'read_one_sig'(stdin)
inc lineno
full_sig = concat ret_sig, param_sig
# filter out empty sigs (and empty lines)
unless full_sig goto read_loop
# de-dup sigs
$I0 = seen[full_sig]
unless $I0 goto unseen
if no_warn_dups goto end_dup_warn
$S0 = 'sprintf'(<<'ERROR', full_sig, lineno, $I0)
Ignored signature '%s' on line %d (previously seen on line %d)
ERROR
$P0 = getinterp
$P1 = $P0.'stderr_handle'()
$P1.'print'($S0)
end_dup_warn:
goto read_loop
unseen:
seen[full_sig] = lineno
.local pmc sig
sig = new ['ResizableStringArray']
sig = 2
sig[0] = ret_sig
sig[1] = param_sig
push sigs, sig
goto read_loop
end_read_loop:
.return (sigs)
.end
.sub 'read_one_sig'
.param pmc fh
.local string line
line = fh.'readline'()
# handle comments
$I0 = index line, '#'
if $I0 < 0 goto end_comment
line = substr line, 0, $I0
end_comment:
# convert whitespace into spaces
.const 'Sub' $P0 = 'alternate_whitespaces'
$P1 = iter $P0
outer_whitespace_loop:
unless $P1 goto end_outer_whitespace_loop
$S0 = shift $P1
inner_whitespace_loop:
$I0 = index line, $S0
if $I0 < 0 goto end_inner_whitespace_loop
line = replace line, $I0, 1, ' '
goto inner_whitespace_loop
end_inner_whitespace_loop:
goto outer_whitespace_loop
end_outer_whitespace_loop:
# turn multiple spaces into a single space
multispace_loop:
$I0 = index line, ' '
if $I0 < 0 goto end_multispace_loop
$S0 = substr line, $I0, 2
line = replace line, $I0, 2, ' '
goto multispace_loop
end_multispace_loop:
# remove leading whitespace
$S0 = substr line, 0, 1
unless $S0 == ' ' goto end_leading
$S0 = substr line, 0, 1
line = replace line, 0, 1, ' '
end_leading:
# handle empty (or whitespace only) lines
if line == '' goto ret
if line == ' ' goto ret
# remove trailing whitespace
$S0 = substr line, -1, 1
unless $S0 == ' ' goto end_trailing
$S0 = substr line, -1, 1
line = replace line, -1, 1, ''
end_trailing:
# read the signature
.local string ret_sig, param_sig
$P0 = split ' ', line
ret_sig = $P0[0]
param_sig = $P0[1]
ret:
.return (ret_sig, param_sig)
.end
#}}}
# gen_sigtable {{{
.sub 'gen_sigtable'
.const string json_table = <<'JSON'
{
"p": { "as_proto": "void *",
"final_dest": "PMC * final_destination = PMCNULL;",
"temp_tmpl": "PMC *t_%i",
"sig_char": "P",
"call_param_tmpl": "PMC_IS_NULL((PMC*)t_%i) ? (void *)NULL : VTABLE_get_pointer(interp, t_%i)",
"ret_assign": "if (return_data != NULL) {
final_destination = Parrot_pmc_new(interp, enum_class_UnManagedStruct);
VTABLE_set_pointer(interp, final_destination, return_data);
}
ret_object = Parrot_pcc_build_call_from_c_args(interp, call_object, \"P\", final_destination);" },
"i": { "as_proto": "int", "sig_char": "I",
"return_type": "INTVAL" },
"l": { "as_proto": "long", "sig_char": "I", "return_type": "INTVAL" },
"c": { "as_proto": "char", "sig_char": "I", "return_type": "INTVAL" },
"s": { "as_proto": "short", "sig_char": "I", "return_type": "INTVAL" },
"f": { "as_proto": "float", "sig_char": "N", "return_type": "FLOATVAL" },
"d": { "as_proto": "double", "sig_char": "N", "return_type": "FLOATVAL" },
"t": { "as_proto": "char *",
"final_dest": "STRING *final_destination;",
"ret_assign": "final_destination = Parrot_str_new(interp, return_data, 0);
ret_object = Parrot_pcc_build_call_from_c_args(interp, call_object, \"S\", final_destination);",
"sig_char": "S",
"temp_tmpl": "char *t_%i; STRING *ts_%i",
"fill_params_tmpl": ", &ts_%i",
"preamble_tmpl": "t_%i = STRING_IS_NULL(ts_%i) ? (char *)NULL : Parrot_str_to_cstring(interp, ts_%i);",
"postamble_tmpl": "if (!STRING_IS_NULL(ts_%i)) Parrot_str_free_cstring(t_%i);" },
"v": { "as_proto": "void",
"return_type": "void *",
"sig_char": "v",
"ret_assign": "",
"func_call_assign": "" },
"P": { "as_proto": "PMC *", "sig_char": "P" },
"O": { "as_proto": "PMC *", "returns": "", "sig_char": "Pi" },
"J": { "as_proto": "PARROT_INTERP",
"returns": "",
"fill_params_tmpl": "",
"call_param_tmpl": "interp",
"temp_tmpl": "",
"sig_char": "" },
"S": { "as_proto": "STRING *", "sig_char": "S" },
"I": { "as_proto": "INTVAL", "sig_char": "I" },
"N": { "as_proto": "FLOATVAL", "sig_char": "N" },
"b": { "as_proto": "void *",
"as_return": "",
"sig_char": "S",
"temp_tmpl":"STRING *t_%i",
"call_param_tmpl": "Buffer_bufstart(t_%i)" },
"B": { "as_proto": "char **",
"as_return": "",
"sig_char": "S",
"fill_params_tmpl": ", &ts_%i",
"temp_tmpl": "char *t_%i; STRING *ts_%i",
"preamble_tmpl": "t_%i = STRING_IS_NULL(ts_%i) ? (char *) NULL : Parrot_str_to_cstring(interp, ts_%i);",
"call_param_tmpl": "&t_%i",
"postamble_tmpl": "if (!STRING_IS_NULL(ts_%i)) Parrot_str_free_cstring(t_%i);" },
"2": { "as_proto": "short *",
"sig_char": "P",
"return_type": "short",
"ret_assign": "ret_object = Parrot_pcc_build_call_from_c_args(interp, call_object, \"I\", return_data);",
"temp_tmpl": "PMC *t_%i; short i_%i",
"preamble_tmpl": "i_%i = VTABLE_get_integer(interp, t_%i);",
"call_param_tmpl": "&i_%i",
"postamble_tmpl": "VTABLE_set_integer_native(interp, t_%i, i_%i);" },
"3": { "as_proto": "int *",
"sig_char": "P",
"return_type": "int",
"ret_assign": "ret_object = Parrot_pcc_build_call_from_c_args(interp, call_object, \"I\", return_data);",
"temp_tmpl": "PMC *t_%i; int i_%i",
"preamble_tmpl": "i_%i = VTABLE_get_integer(interp, t_%i);",
"call_param_tmpl": "&i_%i",
"postamble_tmpl": "VTABLE_set_integer_native(interp, t_%i, i_%i);" },
"4": { "as_proto": "long *",
"sig_char": "P",
"return_type": "long",
"ret_assign": "ret_object = Parrot_pcc_build_call_from_c_args(interp, call_object, \"I\", return_data);",
"temp_tmpl": "PMC *t_%i; long i_%i",
"preamble_tmpl": "i_%i = VTABLE_get_integer(interp, t_%i);",
"call_param_tmpl": "&i_%i",
"postamble_tmpl": "VTABLE_set_integer_native(interp, t_%i, i_%i);" },
"L": { "as_proto": "long *", "as_return": "" },
"T": { "as_proto": "char **", "as_return": "" },
"V": { "as_proto": "void **",
"as_return": "",
"sig_char": "P",
"temp_tmpl": "PMC *t_%i; void *v_%i",
"preamble_tmpl": "v_%i = VTABLE_get_pointer(interp, t_%i);",
"call_param_tmpl": "&v_%i",
"postamble_tmpl": "VTABLE_set_pointer(interp, t_%i, v_%i);" },
"@": { "as_proto": "PMC *", "as_return": "", "cname": "xAT_", "sig_char": "Ps" }
}
JSON
# decode table
.local pmc compiler
load_language 'data_json'
compiler = compreg 'data_json'
.local pmc table
$P0 = compiler.'compile'(json_table)
table = $P0()
# fixup table
.local pmc table_iter
table_iter = iter table
iter_loop:
unless table_iter goto iter_end
.local string k
.local pmc v
k = shift table_iter
v = table[k]
$I0 = exists v['cname']
if $I0 goto has_cname
v['cname'] = k
has_cname:
$I0 = exists v['as_return']
if $I0 goto has_as_return
$S0 = v['as_proto']
v['as_return'] = $S0
has_as_return:
$I0 = exists v['return_type']
if $I0 goto has_return_type
$S0 = v['as_proto']
v['return_type'] = $S0
has_return_type:
$I0 = exists v['ret_assign']
$I1 = exists v['sig_char']
$I1 = !$I1
$I0 = $I0 || $I1 # not (not exists v[ret_assign] and exists v[sig_char])
if $I0 goto has_ret_assign
$S0 = 'ret_object = Parrot_pcc_build_call_from_c_args(interp, call_object, "'
$S1 = v['sig_char']
$S0 = concat $S0, $S1
$S0 = concat $S0, '", return_data);'
v['ret_assign'] = $S0
has_ret_assign:
$I0 = exists v['func_call_assign']
if $I0 goto has_func_call_assign
v['func_call_assign'] = 'return_data = '
has_func_call_assign:
$I0 = exists v['temp_tmpl']
if $I0 goto has_temp_tmpl
$S0 = v['return_type']
$S0 = concat $S0, " t_%i"
v['temp_tmpl'] = $S0
has_temp_tmpl:
$I0 = exists v['fill_params_tmpl']
if $I0 goto has_fill_params_tmpl
v['fill_params_tmpl'] = ', &t_%i'
has_fill_params_tmpl:
$I0 = exists v['call_param_tmpl']
if $I0 goto has_call_param_tmpl
v['call_param_tmpl'] = 't_%i'
has_call_param_tmpl:
goto iter_loop