/
nci_thunk_gen.pir
1348 lines (1085 loc) · 32 KB
/
nci_thunk_gen.pir
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# Copyright (C) 2010-2015, 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
.loadlib 'bit_ops'
.include 'hash_key_type.pasm'
.include 'datatypes.pasm'
.macro_const VERSION 0.02
.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
.local string core
core = 'read_from_opts'('core')
unless core goto end_core
# core decl already in include/parrot/nci.h
$S0 = 'get_loader_decl'(sigs)
print $S0
say ";"
end_core:
$S0 = 'end_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_dynext_loader_decl'(sigs)
print $S0
say ";"
$S0 = 'end_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) 2010-2012, Parrot Foundation.
* Overview:
* Native Call Interface routines.
* Code to call C from parrot.
*/
%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 */
HEAD
.return (head)
.end
.sub 'end_head'
.param pmc ignored :slurpy
.local string head
head = 'sprintf'(<<'HEAD')
/* HEADERIZER STOP */
/* All our static functions that call in various ways. */
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)
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'("%s void\n%s(PARROT_INTERP)", $S0, $S1)
.return ($S2)
.end
.sub 'get_dynext_loader'
.param pmc sigs
$S0 = 'get_dynext_loader_decl'(sigs)
$S1 = 'get_loader_body'(sigs)
$S2 = 'sprintf'(<<'LOADER', $S0, $S1)
%s {
%s
}
LOADER
.return ($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'("%s void\n%s(PARROT_INTERP, SHIM(PMC *lib))", $S0, $S1)
.return ($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:
unless i < n goto end_loop
.local pmc sig
sig = shift sigs
.local string fn_name
fn_name = 'sig_to_fn_name'(sig)
.local pmc sb
sb = new ['StringBuilder']
push sb, "{ "
$I0 = 0
$I1 = elements sig
array_loop:
unless $I0 < $I1 goto end_array_loop
$I2 = sig[$I0]
$S1 = $I2
push sb, $S1
push sb, ", "
inc $I0
goto array_loop
end_array_loop:
push sb, "}"
$S0 = sb
$S0 = 'sprintf'(<<'TEMPLATE', $I1, $S0, fn_name)
{
const int n = %s;
static const int sig[] = %s;
PMC *sig_pmc = Parrot_pmc_new_init_int(interp, enum_class_FixedIntegerArray, n);
int i;
for (i = 0; i < n; i++)
VTABLE_set_integer_keyed_int(interp, sig_pmc, i, sig[i]);
temp_pmc = Parrot_pmc_new(interp, enum_class_UnManagedStruct);
VTABLE_set_pointer(interp, temp_pmc, (void *)%s);
VTABLE_set_pmc_keyed(interp, nci_funcs, sig_pmc, 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 sig
.local string fn_decl
fn_decl = 'sig_to_fn_decl'(sig)
.local string var_decls
var_decls = 'sig_to_var_decls'(sig)
.local string preamble
preamble = 'sig_to_preamble'(sig)
.local string call
call = 'sig_to_call'(sig)
.local string postamble
postamble = 'sig_to_postamble'(sig)
.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 pmc sig
.local pmc postamble, pcc_sig, pcc_retv
postamble = new ['ResizableStringArray']
pcc_sig = new ['ResizableStringArray']
pcc_retv = new ['ResizableStringArray']
.local int i, n, sig_elt
i = 0
n = elements sig
loop:
unless i < n goto end_loop
sig_elt = sig[i]
if sig_elt == .DATATYPE_VOID goto next
$I1 = iseq i, 0
$I2 = band sig_elt, .DATATYPE_REF_FLAG
$I3 = or $I1, $I2
unless $I3 goto next
$P0 = 'map_from_sig_table'('postamble_tmpl', sig_elt)
$S0 = $P0[0]
$S0 = 'fill_tmpl_int'($S0, i)
push postamble, $S0
$P0 = 'map_from_sig_table'('sig_char', sig_elt)
$S0 = $P0[0]
$S0 = 'fill_tmpl_int'($S0, i)
push pcc_sig, $S0
$S0 = "t_%i"
$S0 = 'fill_tmpl_int'($S0, i)
push pcc_retv, $S0
next:
inc i
goto loop
end_loop:
$I0 = elements pcc_sig
unless $I0 goto empty_ret
$S0 = join ";\n ", postamble
$S1 = join '', pcc_sig
$S2 = join ', ', pcc_retv
$S3 = 'sprintf'(<<'TEMPLATE', $S0, $S1, $S2)
%s;
Parrot_pcc_set_call_from_c_args(interp, call_object, "%s", %s);
TEMPLATE
.return ($S3)
empty_ret:
$S0 = <<'RET'
Parrot_pcc_set_call_from_c_args(interp, call_object, "");
RET
.return ($S0)
.end
.sub 'sig_to_call'
.param pmc sig
.local string return_assign
$I0 = sig[0]
$P0 = 'map_from_sig_table'('func_call_assign', $I0)
return_assign = $P0[0]
.local int i, n
.local string call_params
i = 1
n = elements sig
dec n
$P0 = 'xtimes'('v_%i', n)
'fill_tmpls_ascending_ints'($P0, 1)
loop:
unless i <= n goto end_loop
$I0 = sig[i]
$I1 = band $I0, .DATATYPE_REF_FLAG
unless $I1 goto next
$I0 = i - 1
$S0 = $P0[$I0]
$S0 = concat "&", $S0
$P0[$I0] = $S0
next:
inc i
goto loop
end_loop:
call_params = join ', ', $P0
.local string pcc_sig
$P0 = 'map_from_sig_table'('sig_char', sig :flat)
$S0 = shift $P0
pcc_sig = join "", $P0
if pcc_sig != "v" goto end_call_params_void
call_params = ""
end_call_params_void:
.local string call
call = 'sprintf'(<<'TEMPLATE', return_assign, call_params)
GETATTR_NCI_orig_func(interp, nci, orig_func);
fn_pointer = (func_t)D2FPTR(orig_func);
%s (*fn_pointer)(%s);
TEMPLATE
.return (call)
.end
.sub 'sig_to_preamble'
.param pmc sig
.local string preamble
preamble = ""
.local string pcc_sig
$P0 = 'map_from_sig_table'('sig_char', sig :flat)
$S0 = shift $P0
pcc_sig = join "", $P0
if pcc_sig != "v" goto end_handle_v
preamble = 'sprintf'(<<'TEMPLATE')
Parrot_pcc_fill_params_from_c_args(interp, call_object, "");
TEMPLATE
goto return
end_handle_v:
.local string fill_params
$I0 = elements sig
dec $I0
$P0 = 'xtimes'(', &t_%i', $I0)
'fill_tmpls_ascending_ints'($P0, 1)
fill_params = join '', $P0
.local string extra_preamble
$P0 = 'map_from_sig_table'('preamble_tmpl', sig :flat)
$S0 = shift $P0
'fill_tmpls_ascending_ints'($P0, 1)
extra_preamble = join ";\n ", $P0
preamble = 'sprintf'(<<'TEMPLATE', pcc_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 pmc sig
.local string ret_csig
$I0 = sig[0]
$P0 = 'map_from_sig_table'('c_type', $I0)
ret_csig = $P0[0]
.local int i, n
i = 1
n = elements sig
.local string params_csig
$P0 = 'map_from_sig_table'('c_type', sig :flat)
$S0 = shift $P0
by_ref_loop:
unless i < n goto end_by_ref_loop
$I0 = sig[i]
$I1 = band $I0, .DATATYPE_REF_FLAG
unless $I1 goto next
$I0 = i - 1
$S0 = $P0[$I0]
$S0 = concat $S0, '*'
$P0[$I0] = $S0
next:
inc i
goto by_ref_loop
end_by_ref_loop:
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 params_tdecl
$P0 = 'map_from_sig_table'('temp_tmpl', sig :flat)
'fill_tmpls_ascending_ints'($P0, 0)
$P0 = 'grep_for_true'($P0)
params_tdecl = join ";\n ", $P0
.local string var_decls
var_decls = 'sprintf'(<<'TEMPLATE', ret_csig, params_csig, 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);
%s;
TEMPLATE
.return (var_decls)
.end
.sub 'sig_to_fn_decl'
.param pmc sig
.local string storage_class, fn_name, fn_decl
storage_class = 'read_from_opts'(.THUNK_STORAGE_CLASS)
fn_name = 'sig_to_fn_name'(sig)
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 pmc sig
.local int i, n
$P0 = 'map_from_sig_table'('cname', sig :flat)
i = 0
n = elements sig
loop:
unless i < n goto end_loop
$I0 = sig[i]
$I1 = band $I0, .DATATYPE_REF_FLAG
unless $I1 goto next
$S0 = $P0[i]
$S0 = concat $S0, 'ref'
$P0[i] = $S0
next:
inc i
goto loop
end_loop:
$S0 = join '_', $P0
$S1 = 'read_from_opts'(.THUNK_NAME_PROTO)
$S2 = 'sprintf'($S1, $S0)
.return ($S2)
.end
.sub 'map_from_sig_table'
.param string field_name
.param pmc sig :slurpy
.local pmc sig_table
sig_table = get_global .SIG_TABLE_GLOBAL_NAME
.local int i, n
i = 0
n = elements sig
.local pmc result
result = new ['ResizableStringArray'], n
loop:
unless i < n goto end_loop
$I0 = sig[i]
$I1 = bnot .DATATYPE_REF_FLAG
$I2 = band $I0, $I1
$I1 = exists sig_table[$I2]
unless $I1 goto unsupported_type
$S1 = sig_table[$I2; field_name]
result[i] = $S1
inc i
goto loop
unsupported_type:
$P0 = null
$P0 = dlfunc $P0, "Parrot_dt_get_datatype_name", "SpI"
$P1 = getinterp
$S0 = $P0($P1, $I0)
$S0 = 'sprintf'("Unsupported nci signature type: `%s'", $S0)
die $S0
end_loop:
.return (result)
.end
# }}}
# read_sigs {{{
.sub 'read_sigs'
.local pmc stdin, seen, sigs
$P0 = getinterp
stdin = $P0.'stdin_handle'()
seen = new ['Hash']
seen.'set_key_type'(.Hash_key_type_PMC)
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 pmc sig
sig = 'read_one_sig'(stdin)
inc lineno
# filter out empty sigs (and empty lines)
if_null sig, read_loop
# de-dup sigs
$I0 = seen[sig]
unless $I0 goto unseen
if no_warn_dups goto end_dup_warn
$S0 = get_repr sig
$S0 = 'sprintf'(<<'ERROR', $S0, lineno, $I0)
Ignored signature '%s' on line %d (previously seen on line %d)
ERROR
'warn'($S0)
end_dup_warn:
goto read_loop
unseen:
seen[sig] = lineno
push sigs, sig
goto read_loop
end_read_loop:
.return (sigs)
.end
.sub 'read_one_sig'
.param pmc fh
load_bytecode 'String/Utils.pbc'
.local pmc chomp
chomp = get_global ['String';'Utils'], 'chomp'
# init pcre
load_bytecode 'pcre.pbc'
$P0 = get_global ['PCRE'], 'init'
$P0()
.local pmc pcre_comp, pcre_match, pcre_dollar
pcre_comp = get_global ['PCRE'], 'compile'
pcre_match = get_global ['PCRE'], 'match'
pcre_dollar = get_global ['PCRE'], 'dollar'
.local pmc empty_line_regex, old_style_sig_line_regex, new_style_sig_line_regex
.local pmc old_style_sig_item_regex, new_style_sig_item_regex
.local string pcre_errstr, pcre_errint
.const int pcre_extended = 0x00000008
$S0 = "^ [[:space:]]* (?: [#] .* )? $"
(empty_line_regex, pcre_errstr, pcre_errint) = pcre_comp($S0, pcre_extended)
if pcre_errint goto pcre_comp_err
$S0 = "^ [[:space:]]* ( (?: [INSPcsilfdpv] [[:space:]]* )+ ) (?: [#] .* )? $"
(old_style_sig_line_regex, pcre_errstr, pcre_errint) = pcre_comp($S0, pcre_extended)
if pcre_errint goto pcre_comp_err
$S0 = ".*? ([INSPcsilfdpv])"
(old_style_sig_item_regex, pcre_errstr, pcre_errint) = pcre_comp($S0, pcre_extended)
if pcre_errint goto pcre_comp_err
$S0 = <<'REGEX'
^ [[:space:]]* ( [[:word:]]+ [[:space:]]* [(] [[:space:]]*
(?:
[[:word:]]+ [&]? [[:space:]]*
(?: [,] [[:space:]]* [[:word:]]+ [&]? [[:space:]]* )*
)?
[)] ) [[:space:]]* (?: [#] .* )? $
REGEX
(new_style_sig_line_regex, pcre_errstr, pcre_errint) = pcre_comp($S0, pcre_extended)
if pcre_errint goto pcre_comp_err
$S0 = ".*? ([[:word:]]+ [&]?)"
(new_style_sig_item_regex, pcre_errstr, pcre_errint) = pcre_comp($S0, pcre_extended)
if pcre_errint goto pcre_comp_err
goto match_line
pcre_comp_err:
$S0 = 'sprintf'("Error in PCRE compilation: `%Ss' (%d)", pcre_errstr, pcre_errint)
die $S0
match_line:
.local string line
line = fh.'readline'()
line = chomp(line)
.local int ok
.local pmc match
(ok, match) = pcre_match(empty_line_regex, line, 0, 0)
if ok > 0 goto return
(ok, match) = pcre_match(old_style_sig_line_regex, line, 0, 0)
if ok > 0 goto old_style_sig
(ok, match) = pcre_match(new_style_sig_line_regex, line, 0, 0)
if ok > 0 goto new_style_sig
say ok
$S0 = 'sprintf'("Invalid signature line: `%Ss'", line)
die $S0
old_style_sig:
$S0 = pcre_dollar( line, ok, match, 1 )
$P0 = 'comb'($S0, old_style_sig_item_regex)
$S0 = join '', $P0
$P1 = null
$P1 = dlfunc $P1, "Parrot_nci_parse_signature", "PpS"
$P0 = getinterp
$P3 = $P1($P0, $S0)
goto return
new_style_sig:
$S0 = pcre_dollar( line, ok, match, 1 )
$P0 = 'comb'($S0, new_style_sig_item_regex)
$P1 = null
$P1 = dlfunc $P1, "Parrot_dt_get_datatype_enum", "IpS"
$P2 = getinterp
$I0 = 0
$I1 = elements $P0
$P3 = new ['FixedIntegerArray'], $I1
get_type_enum_loop:
unless $I0 < $I1 goto end_get_type_enum_loop
$S0 = $P0[$I0]
$I2 = $P1($P2, $S0)
$P3[$I0] = $I2
inc $I0
goto get_type_enum_loop
end_get_type_enum_loop:
goto return
return:
.yield ($P3)
goto match_line
.end
#}}}
# gen_sigtable {{{
.sub 'gen_sigtable'
.local pmc table
table = new ['Hash']
table.'set_key_type'(.Hash_key_type_int)
$P1 = 'from_json'(<<'JSON')
{ "c_type": "void *",