INTVAL Parrot_Run_OS_Command_Argv(PARROT_INTERP, PMC *cmdargs) { DWORD status = 0; STARTUPINFO si; PROCESS_INFORMATION pi; int pmclen; int cmdlinelen = 1000; int cmdlinepos = 0; char *cmdline = (char *)mem_sys_allocate(cmdlinelen); int i; /* Ensure there's something in the PMC array. */ pmclen = VTABLE_elements(interp, cmdargs); if (pmclen == 0) Parrot_ex_throw_from_c_args(interp, NULL, EXCEPTION_NOSPAWN, "Empty argument array for spawnw"); /* Now build command line. */ for (i = 0; i < pmclen; i++) { STRING * const s = VTABLE_get_string_keyed_int(interp, cmdargs, i); char * const cs = Parrot_str_to_cstring(interp, s); if (cmdlinepos + (int)s->strlen + 3 > cmdlinelen) { cmdlinelen += s->strlen + 4; cmdline = (char *)mem_sys_realloc(cmdline, cmdlinelen); } strcpy(cmdline + cmdlinepos, "\""); strcpy(cmdline + cmdlinepos + 1, cs); strcpy(cmdline + cmdlinepos + 1 + s->strlen, "\" "); cmdlinepos += s->strlen + 3; } /* Start the child process. */ memset(&si, 0, sizeof (si)); si.cb = sizeof (si); memset(&pi, 0, sizeof (pi)); if (!CreateProcess(NULL, cmdline, NULL, NULL, TRUE, 0, NULL, NULL, &si, &pi)) Parrot_ex_throw_from_c_args(interp, NULL, EXCEPTION_NOSPAWN, "Can't spawn child process"); WaitForSingleObject(pi.hProcess, INFINITE); /* Get exit code. */ if (!GetExitCodeProcess(pi.hProcess, &status)) { Parrot_warn(interp, PARROT_WARNINGS_PLATFORM_FLAG, "Process completed: Failed to get exit code."); } /* Clean up. */ CloseHandle(pi.hProcess); CloseHandle(pi.hThread); mem_sys_free(cmdline); /* Return exit code left shifted by 8 for POSIX emulation. */ return status << 8; }
/* Finds a method. */ static void find_method(PARROT_INTERP, PMC *nci) { PMC * unused; /* Get methods table out of meta-object and look up method. */ PMC *capture = Parrot_pcc_get_signature(interp, CURRENT_CONTEXT(interp)); PMC *self = VTABLE_get_pmc_keyed_int(interp, capture, 0); PMC *methods = ((KnowHOWREPRInstance *)PMC_data(self))->body.methods; STRING *name = VTABLE_get_string_keyed_int(interp, capture, 2); PMC *method = VTABLE_get_pmc_keyed_str(interp, methods, name); /* Put into capture to act as return value. */ unused = Parrot_pcc_build_call_from_c_args(interp, capture, "P", method); }
/* Adds a method. */ static void add_method(PARROT_INTERP, PMC *nci) { PMC * unused; /* Get methods table out of meta-object. */ PMC *capture = Parrot_pcc_get_signature(interp, CURRENT_CONTEXT(interp)); PMC *self = VTABLE_get_pmc_keyed_int(interp, capture, 0); PMC *methods = ((KnowHOWREPRInstance *)PMC_data(self))->body.methods; /* Get name and method to add. */ STRING *name = VTABLE_get_string_keyed_int(interp, capture, 2); PMC *method = VTABLE_get_pmc_keyed_int(interp, capture, 3); /* Add it, and return added method as result. */ VTABLE_set_pmc_keyed_str(interp, methods, name, method); unused = Parrot_pcc_build_call_from_c_args(interp, capture, "P", method); }
INTVAL Parrot_Run_OS_Command_Argv(PARROT_INTERP, PMC *cmdargs) { pid_t child; int len = VTABLE_elements(interp, cmdargs); if (len == 0) Parrot_ex_throw_from_c_args(interp, NULL, EXCEPTION_NOSPAWN, "Empty argument array for execvp"); child = fork(); /* Did we fail? */ if (-1 == child) Parrot_ex_throw_from_c_args(interp, NULL, EXCEPTION_NOSPAWN, "Can't spawn child process"); /* Are we the parent or child? */ if (child) { /* parent */ int status; pid_t returnstat = waitpid(child, &status, 0); UNUSED(returnstat); return status; } else { /* child. Be horribly profligate with memory, since we're about to be something else */ int status, i; STRING *s; char *cmd; char **argv = mem_gc_allocate_n_typed(interp, (len+1), char*); for (i = 0; i < len; ++i) { s = VTABLE_get_string_keyed_int(interp, cmdargs, i); argv[i] = Parrot_str_to_cstring(interp, s); } cmd = argv[0]; argv[i] = NULL; status = execvp(cmd, argv); /* if we get here, something's horribly wrong... */ if (status) { exit(status); } } return 1; /* make gcc happy */ }
/* Takes a signature along with positional and named arguments and binds them * into the provided lexpad (actually, anything that has a Hash interface will * do). Returns BIND_RESULT_OK if binding works out, BIND_RESULT_FAIL if there * is a failure and BIND_RESULT_JUNCTION if the failure was because of a * Junction being passed (meaning we need to auto-thread). */ INTVAL Rakudo_binding_bind(PARROT_INTERP, PMC *lexpad, PMC *sig_pmc, PMC *capture, INTVAL no_nom_type_check, STRING **error) { INTVAL i, num_pos_args; INTVAL bind_fail = 0; INTVAL cur_pos_arg = 0; Rakudo_Signature *sig = (Rakudo_Signature *)PMC_data(sig_pmc); PMC *params = sig->params; INTVAL num_params = VTABLE_elements(interp, params); Rakudo_BindVal cur_bv; /* If we do have some named args, we want to make a clone of the hash * to work on. We'll delete stuff from it as we bind, and what we have * left over can become the slurpy hash or - if we aren't meant to be * taking one - tell us we have a problem. */ PMC *named_args_copy = PMCNULL; /* If we have a |$foo that's followed by slurpies, then we can suppress * any future arity checks. */ INTVAL suppress_arity_fail = 0; /* If it's a Parrot capture, it may contain natively typed arguments. * NOTE: This is a really an encapsulation breakage; if Parrot folks * change stuff and this breaks, it's not Parrot's fault. */ struct Pcc_cell * pc_positionals = NULL; /* Set up statics. */ if (!smo_id) setup_binder_statics(interp); /* If we've got a CallContext, just has an attribute with list of named * parameter names. Otherwise, it's probably a Perl 6 Capture and we need * to extract its parts. */ if (capture->vtable->base_type == enum_class_CallContext) { PMC *named_names = VTABLE_get_attr_str(interp, capture, NAMED_str); if (!PMC_IS_NULL(named_names)) { PMC *iter = VTABLE_get_iter(interp, named_names); named_args_copy = Parrot_pmc_new(interp, enum_class_Hash); while (VTABLE_get_bool(interp, iter)) { STRING *name = VTABLE_shift_string(interp, iter); VTABLE_set_pmc_keyed_str(interp, named_args_copy, name, VTABLE_get_pmc_keyed_str(interp, capture, name)); } } GETATTR_CallContext_positionals(interp, capture, pc_positionals); } else if (capture->vtable->base_type == smo_id && STABLE(capture)->type_check(interp, capture, Rakudo_types_capture_get())) { PMC *captype = Rakudo_types_capture_get(); PMC *list_part = VTABLE_get_attr_keyed(interp, capture, captype, LIST_str); PMC *hash_part = VTABLE_get_attr_keyed(interp, capture, captype, HASH_str); capture = Rakudo_isnqplist(list_part) ? list_part : Parrot_pmc_new(interp, enum_class_ResizablePMCArray); if (hash_part->vtable->base_type == enum_class_Hash) { PMC *iter = VTABLE_get_iter(interp, hash_part); named_args_copy = Parrot_pmc_new(interp, enum_class_Hash); while (VTABLE_get_bool(interp, iter)) { STRING *arg_copy_name = VTABLE_shift_string(interp, iter); VTABLE_set_pmc_keyed_str(interp, named_args_copy, arg_copy_name, VTABLE_get_pmc_keyed_str(interp, hash_part, arg_copy_name)); } } } else { Parrot_ex_throw_from_c_args(interp, NULL, EXCEPTION_INVALID_OPERATION, "Internal Error: Rakudo_binding_bind passed invalid Capture"); } /* Now we'll walk through the signature and go about binding things. */ num_pos_args = VTABLE_elements(interp, capture); for (i = 0; i < num_params; i++) { Rakudo_Parameter *param = (Rakudo_Parameter *)PMC_data( VTABLE_get_pmc_keyed_int(interp, params, i)); /* Is it looking for us to bind a capture here? */ if (param->flags & SIG_ELEM_IS_CAPTURE) { /* Capture the arguments from this point forwards into a Capture. * Of course, if there's no variable name we can (cheaply) do pretty * much nothing. */ if (STRING_IS_NULL(param->variable_name)) { bind_fail = BIND_RESULT_OK; } else { PMC *captype = Rakudo_types_capture_get(); PMC *capsnap = REPR(captype)->allocate(interp, STABLE(captype)); PMC *pos_args = Parrot_pmc_new(interp, enum_class_ResizablePMCArray); PMC *named_args = Parrot_pmc_new(interp, enum_class_Hash); INTVAL k; VTABLE_set_attr_keyed(interp, capsnap, captype, LIST_str, pos_args); VTABLE_set_attr_keyed(interp, capsnap, captype, HASH_str, named_args); for (k = cur_pos_arg; k < num_pos_args; k++) { cur_bv = get_positional_bind_val(interp, pc_positionals, capture, k); VTABLE_push_pmc(interp, pos_args, cur_bv.type == BIND_VAL_OBJ ? cur_bv.val.o : create_box(interp, cur_bv)); } if (!PMC_IS_NULL(named_args_copy)) { PMC *iter = VTABLE_get_iter(interp, named_args_copy); while (VTABLE_get_bool(interp, iter)) { STRING *name = VTABLE_shift_string(interp, iter); VTABLE_set_pmc_keyed_str(interp, named_args, name, VTABLE_get_pmc_keyed_str(interp, named_args_copy, name)); } } cur_bv.type = BIND_VAL_OBJ; cur_bv.val.o = capsnap; bind_fail = Rakudo_binding_bind_one_param(interp, lexpad, sig, param, cur_bv, no_nom_type_check, error); } if (bind_fail) { return bind_fail; } else if (i + 1 == num_params) { /* Since a capture acts as "the ultimate slurpy" in a sense, if * this is the last parameter in the signature we can return * success right off the bat. */ return BIND_RESULT_OK; } else { Rakudo_Parameter *next_param = (Rakudo_Parameter *)PMC_data( VTABLE_get_pmc_keyed_int(interp, params, i + 1)); if (next_param->flags & (SIG_ELEM_SLURPY_POS | SIG_ELEM_SLURPY_NAMED)) suppress_arity_fail = 1; } } /* Could it be a named slurpy? */ else if (param->flags & SIG_ELEM_SLURPY_NAMED) { /* Can cheat a bit if it's the default method %_. * We give the hash to the lexpad. */ if (param->flags & SIG_ELEM_METHOD_SLURPY_NAMED && lexpad->vtable->base_type == p6l_id) { SETATTR_Perl6LexPad_default_named_slurpy(interp, lexpad, named_args_copy); PARROT_GC_WRITE_BARRIER(interp, lexpad); } else { /* We'll either take the current named arguments copy hash which * will by definition contain all unbound named parameters and use * that, or just create an empty one. */ PMC *slurpy = PMC_IS_NULL(named_args_copy) ? Parrot_pmc_new(interp, enum_class_Hash) : named_args_copy; cur_bv.type = BIND_VAL_OBJ; cur_bv.val.o = Rakudo_binding_create_hash(interp, slurpy); bind_fail = Rakudo_binding_bind_one_param(interp, lexpad, sig, param, cur_bv, no_nom_type_check, error); if (bind_fail) return bind_fail; } /* Nullify named arguments hash now we've consumed it, to mark all * is well. */ named_args_copy = PMCNULL; } /* Otherwise, maybe it's a positional. */ else if (PMC_IS_NULL(param->named_names)) { /* Slurpy or LoL-slurpy? */ if (param->flags & (SIG_ELEM_SLURPY_POS | SIG_ELEM_SLURPY_LOL)) { /* Create Perl 6 array, create RPA of all remaining things, then * store it. */ PMC *temp = Parrot_pmc_new(interp, enum_class_ResizablePMCArray); while (cur_pos_arg < num_pos_args) { cur_bv = get_positional_bind_val(interp, pc_positionals, capture, cur_pos_arg); VTABLE_push_pmc(interp, temp, cur_bv.type == BIND_VAL_OBJ ? cur_bv.val.o : create_box(interp, cur_bv)); cur_pos_arg++; } cur_bv.type = BIND_VAL_OBJ; cur_bv.val.o = param->flags & SIG_ELEM_SLURPY_POS ? Rakudo_binding_create_positional(interp, temp) : Rakudo_binding_create_lol(interp, temp); bind_fail = Rakudo_binding_bind_one_param(interp, lexpad, sig, param, cur_bv, no_nom_type_check, error); if (bind_fail) return bind_fail; } /* Otherwise, a positional. */ else { /* Do we have a value?. */ if (cur_pos_arg < num_pos_args) { /* Easy - just bind that. */ cur_bv = get_positional_bind_val(interp, pc_positionals, capture, cur_pos_arg); bind_fail = Rakudo_binding_bind_one_param(interp, lexpad, sig, param, cur_bv, no_nom_type_check, error); if (bind_fail) return bind_fail; cur_pos_arg++; } else { /* No value. If it's optional, fetch a default and bind that; * if not, we're screwed. Note that we never nominal type check * an optional with no value passed. */ if (param->flags & SIG_ELEM_IS_OPTIONAL) { cur_bv.type = BIND_VAL_OBJ; cur_bv.val.o = Rakudo_binding_handle_optional(interp, param, lexpad); bind_fail = Rakudo_binding_bind_one_param(interp, lexpad, sig, param, cur_bv, 0, error); if (bind_fail) return bind_fail; } else { if (error) *error = Rakudo_binding_arity_fail(interp, params, num_params, num_pos_args, 0); return BIND_RESULT_FAIL; } } } } /* Else, it's a non-slurpy named. */ else { /* Try and get hold of value. */ PMC *value = PMCNULL; INTVAL num_names = VTABLE_elements(interp, param->named_names); INTVAL j; if (!PMC_IS_NULL(named_args_copy)) { for (j = 0; j < num_names; j++) { STRING *name = VTABLE_get_string_keyed_int(interp, param->named_names, j); value = VTABLE_get_pmc_keyed_str(interp, named_args_copy, name); if (!PMC_IS_NULL(value)) { /* Found a value. Delete entry from to-bind args and stop looking. */ VTABLE_delete_keyed_str(interp, named_args_copy, name); break; } } } /* Did we get one? */ if (PMC_IS_NULL(value)) { /* Nope. We'd better hope this param was optional... */ if (param->flags & SIG_ELEM_IS_OPTIONAL) { cur_bv.type = BIND_VAL_OBJ; cur_bv.val.o = Rakudo_binding_handle_optional(interp, param, lexpad); bind_fail = Rakudo_binding_bind_one_param(interp, lexpad, sig, param, cur_bv, 0, error); } else if (!suppress_arity_fail) { if (error) *error = Parrot_sprintf_c(interp, "Required named parameter '%S' not passed", VTABLE_get_string_keyed_int(interp, param->named_names, 0)); return BIND_RESULT_FAIL; } } else { cur_bv.type = BIND_VAL_OBJ; cur_bv.val.o = value; bind_fail = Rakudo_binding_bind_one_param(interp, lexpad, sig, param, cur_bv, 0, error); } /* If we got a binding failure, return it. */ if (bind_fail) return bind_fail; } } /* Do we have any left-over args? */ if (cur_pos_arg < num_pos_args && !suppress_arity_fail) { /* Oh noes, too many positionals passed. */ if (error) *error = Rakudo_binding_arity_fail(interp, params, num_params, num_pos_args, 1); return BIND_RESULT_FAIL; } if (!PMC_IS_NULL(named_args_copy) && VTABLE_elements(interp, named_args_copy)) { /* Oh noes, unexpected named args. */ if (error) { INTVAL num_extra = VTABLE_elements(interp, named_args_copy); PMC *iter = VTABLE_get_iter(interp, named_args_copy); if (num_extra == 1) { *error = Parrot_sprintf_c(interp, "Unexpected named parameter '%S' passed", VTABLE_shift_string(interp, iter)); } else { INTVAL first = 1; STRING *comma = Parrot_str_new(interp, ", ", 0); *error = Parrot_sprintf_c(interp, "%d unexpected named parameters passed (", num_extra); while (VTABLE_get_bool(interp, iter)) { STRING *name = VTABLE_shift_string(interp, iter); if (!first) *error = Parrot_str_concat(interp, *error, comma); else first = 0; *error = Parrot_str_concat(interp, *error, name); } *error = Parrot_str_concat(interp, *error, Parrot_str_new(interp, ")", 0)); } } return BIND_RESULT_FAIL; } /* If we get here, we're done. */ return BIND_RESULT_OK; }