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41e75fcc78e8a2d7fa88efb34ca76ae4ebb1f3a9
mercury/runtime/mercury_deconstruct.c
Julien Fischer e9d90b2891 Avoid warnings from clang in the runtime and util directories. 
runtime/mercury_stack_trace.c:
	In the function MR_dump_stack_from_layout_clique initialise the variable
	lines_dumped_so_far.  (This appears to be an actual bug.)

runtime/mercury_prof.c:
	Only define the static global in_profiling_code if either of call count
	profiling or time profiling is enabled.

runtime/mercury_context.c:
runtime/mercury_deconstruct.c:
runtime/mercury_deep_profiling.c:
	Only define some local variables in grades that require them.

runtime/mercury_float.c:
runtime/mercury_deep_copy_body.h:
runtime/mercury_construct.c:
runtime/mercury_memory_zones.c:
runtime/mercury_stm.c:
runtime/mercury_trace_base.c:
runtime/mercury_type_info.c:
	Delete unused local variables.

util/mdemangle.c:
	Delete an unused static global variable.

	Use fputs in place of fprintf in a couple of places in order
	to avoid warnings about format strings that are not string literals.

	Delete an unused function.

util/mkinit.c:
util/mkinit_erl.c:
	Delete unused local variables.
2014-03-20 17:01:15 +11:00

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/*
** vim:ts=4 sw=4 expandtab
*/
/*
** Copyright (C) 2002-2007, 2011 The University of Melbourne.
** This file may only be copied under the terms of the GNU Library General
** Public License - see the file COPYING.LIB in the Mercury distribution.
*/
/*
** mercury_deconstruct.c
**
** This file provides utility functions for deconstructing terms, for use by
** the standard library.
*/
#include "mercury_imp.h"
#include "mercury_deconstruct.h"
#include "mercury_deconstruct_macros.h"
#include "mercury_type_desc.h"
#include "mercury_minimal_model.h"
static MR_ConstString MR_expand_type_name(MR_TypeCtorInfo tci, MR_bool);
#define EXPAND_FUNCTION_NAME MR_expand_functor_args
#define EXPAND_TYPE_NAME MR_Expand_Functor_Args_Info
#define EXPAND_FUNCTOR_FIELD functor
#define EXPAND_ARGS_FIELD args
#include "mercury_ml_expand_body.h"
#undef EXPAND_FUNCTION_NAME
#undef EXPAND_TYPE_NAME
#undef EXPAND_FUNCTOR_FIELD
#undef EXPAND_ARGS_FIELD
#define EXPAND_FUNCTION_NAME MR_expand_functor_args_limit
#define EXPAND_TYPE_NAME MR_Expand_Functor_Args_Limit_Info
#define EXPAND_FUNCTOR_FIELD functor
#define EXPAND_ARGS_FIELD args
#define EXPAND_APPLY_LIMIT
#include "mercury_ml_expand_body.h"
#undef EXPAND_FUNCTION_NAME
#undef EXPAND_TYPE_NAME
#undef EXPAND_FUNCTOR_FIELD
#undef EXPAND_ARGS_FIELD
#undef EXPAND_APPLY_LIMIT
#define EXPAND_FUNCTION_NAME MR_expand_functor_only
#define EXPAND_TYPE_NAME MR_Expand_Functor_Only_Info
#define EXPAND_FUNCTOR_FIELD functor_only
#include "mercury_ml_expand_body.h"
#undef EXPAND_FUNCTION_NAME
#undef EXPAND_TYPE_NAME
#undef EXPAND_FUNCTOR_FIELD
#define EXPAND_FUNCTION_NAME MR_expand_args_only
#define EXPAND_TYPE_NAME MR_Expand_Args_Only_Info
#define EXPAND_ARGS_FIELD args_only
#include "mercury_ml_expand_body.h"
#undef EXPAND_FUNCTION_NAME
#undef EXPAND_TYPE_NAME
#undef EXPAND_ARGS_FIELD
#define EXPAND_FUNCTION_NAME MR_expand_chosen_arg_only
#define EXPAND_TYPE_NAME MR_Expand_Chosen_Arg_Only_Info
#define EXPAND_CHOSEN_ARG
#include "mercury_ml_expand_body.h"
#undef EXPAND_FUNCTION_NAME
#undef EXPAND_TYPE_NAME
#undef EXPAND_CHOSEN_ARG
#define EXPAND_FUNCTION_NAME MR_expand_named_arg_only
#define EXPAND_TYPE_NAME MR_Expand_Chosen_Arg_Only_Info
#define EXPAND_NAMED_ARG
#include "mercury_ml_expand_body.h"
#undef EXPAND_FUNCTION_NAME
#undef EXPAND_TYPE_NAME
#undef EXPAND_NAMED_ARG
/*
** N.B. any modifications to the signature of this function will require
** changes not only to library/deconstruct.m, but also to library/store.m
** and extras/trailed_update/tr_store.m.
*/
MR_bool
MR_arg(MR_TypeInfo type_info, MR_Word *term_ptr, int arg_index,
MR_TypeInfo *arg_type_info_ptr, MR_Word **arg_ptr,
const MR_DuArgLocn **arg_locn_ptr,
MR_noncanon_handling noncanon)
{
MR_Expand_Chosen_Arg_Only_Info expand_info;
MR_expand_chosen_arg_only(type_info, term_ptr, noncanon, arg_index,
&expand_info);
/* Check range. */
if (expand_info.chosen_index_exists) {
*arg_type_info_ptr = expand_info.chosen_type_info;
*arg_ptr = expand_info.chosen_value_ptr;
*arg_locn_ptr = expand_info.chosen_arg_locn;
return MR_TRUE;
}
return MR_FALSE;
}
MR_bool
MR_named_arg(MR_TypeInfo type_info, MR_Word *term_ptr, MR_ConstString arg_name,
MR_TypeInfo *arg_type_info_ptr, MR_Word **arg_ptr,
const MR_DuArgLocn **arg_locn_ptr,
MR_noncanon_handling noncanon)
{
MR_Expand_Chosen_Arg_Only_Info expand_info;
MR_expand_named_arg_only(type_info, term_ptr, noncanon, arg_name,
&expand_info);
/* Check range. */
if (expand_info.chosen_index_exists) {
*arg_type_info_ptr = expand_info.chosen_type_info;
*arg_ptr = expand_info.chosen_value_ptr;
*arg_locn_ptr = expand_info.chosen_arg_locn;
return MR_TRUE;
}
return MR_FALSE;
}
MR_bool
MR_named_arg_num(MR_TypeInfo type_info, MR_Word *term_ptr,
const char *arg_name, int *arg_num_ptr)
{
MR_TypeCtorInfo type_ctor_info;
MR_DuTypeLayout du_type_layout;
const MR_DuPtagLayout *ptag_layout;
const MR_DuFunctorDesc *functor_desc;
const MR_NotagFunctorDesc *notag_functor_desc;
MR_Word data;
int ptag;
MR_Word sectag;
MR_TypeInfo eqv_type_info;
int i;
type_ctor_info = MR_TYPEINFO_GET_TYPE_CTOR_INFO(type_info);
if (! MR_type_ctor_has_valid_rep(type_ctor_info)) {
MR_fatal_error("MR_named_arg_num: term of unknown representation");
}
switch (MR_type_ctor_rep(type_ctor_info)) {
case MR_TYPECTOR_REP_RESERVED_ADDR_USEREQ:
case MR_TYPECTOR_REP_RESERVED_ADDR:
{
MR_ReservedAddrTypeLayout ra_layout;
ra_layout = MR_type_ctor_layout(type_ctor_info).
MR_layout_reserved_addr;
data = *term_ptr;
/*
** First check if this value is one of
** the numeric reserved addresses.
*/
if ((MR_Unsigned) data <
(MR_Unsigned) ra_layout->MR_ra_num_res_numeric_addrs)
{
/*
** If so, it must be a constant, and constants never have
** any arguments.
*/
return MR_FALSE;
}
/*
** Next check if this value is one of the
** the symbolic reserved addresses.
*/
for (i = 0; i < ra_layout->MR_ra_num_res_symbolic_addrs; i++) {
if (data == (MR_Word) ra_layout->MR_ra_res_symbolic_addrs[i]) {
return MR_FALSE;
}
}
/*
** Otherwise, it is not one of the reserved addresses,
** so handle it like a normal DU type.
*/
du_type_layout = ra_layout->MR_ra_other_functors;
goto du_type;
}
case MR_TYPECTOR_REP_DU_USEREQ:
case MR_TYPECTOR_REP_DU:
data = *term_ptr;
du_type_layout = MR_type_ctor_layout(type_ctor_info).MR_layout_du;
/* fall through */
/*
** This label handles both the DU case and the second half of the
** RESERVED_ADDR case. `du_type_layout' and `data' must both be
** set before this code is entered.
*/
du_type:
ptag = MR_tag(data);
ptag_layout = &du_type_layout[ptag];
switch (ptag_layout->MR_sectag_locn) {
case MR_SECTAG_NONE:
case MR_SECTAG_NONE_DIRECT_ARG:
functor_desc = ptag_layout->MR_sectag_alternatives[0];
break;
case MR_SECTAG_LOCAL:
sectag = MR_unmkbody(data);
functor_desc = ptag_layout->MR_sectag_alternatives[sectag];
break;
case MR_SECTAG_REMOTE:
sectag = MR_field(ptag, data, 0);
functor_desc = ptag_layout->MR_sectag_alternatives[sectag];
break;
case MR_SECTAG_VARIABLE:
MR_fatal_error("MR_named_arg_num(): unexpected variable");
default:
MR_fatal_error("MR_named_arg_num(): invalid sectag_locn");
}
if (functor_desc->MR_du_functor_arg_names == NULL) {
return MR_FALSE;
}
for (i = 0; i < functor_desc->MR_du_functor_orig_arity; i++) {
if (functor_desc->MR_du_functor_arg_names[i] != NULL
&& MR_streq(arg_name,
functor_desc->MR_du_functor_arg_names[i]))
{
*arg_num_ptr = i;
return MR_TRUE;
}
}
return MR_FALSE;
case MR_TYPECTOR_REP_EQUIV:
eqv_type_info = MR_create_type_info(
MR_TYPEINFO_GET_FIXED_ARITY_ARG_VECTOR(type_info),
MR_type_ctor_layout(type_ctor_info).MR_layout_equiv);
return MR_named_arg_num(eqv_type_info, term_ptr, arg_name,
arg_num_ptr);
case MR_TYPECTOR_REP_EQUIV_GROUND:
eqv_type_info = MR_pseudo_type_info_is_ground(
MR_type_ctor_layout(type_ctor_info).MR_layout_equiv);
return MR_named_arg_num(eqv_type_info, term_ptr, arg_name,
arg_num_ptr);
case MR_TYPECTOR_REP_NOTAG:
case MR_TYPECTOR_REP_NOTAG_USEREQ:
case MR_TYPECTOR_REP_NOTAG_GROUND:
case MR_TYPECTOR_REP_NOTAG_GROUND_USEREQ:
notag_functor_desc = MR_type_ctor_functors(type_ctor_info).
MR_functors_notag;
if (notag_functor_desc->MR_notag_functor_arg_name != NULL
&& MR_streq(arg_name,
notag_functor_desc->MR_notag_functor_arg_name))
{
*arg_num_ptr = 0;
return MR_TRUE;
}
return MR_FALSE;
case MR_TYPECTOR_REP_ENUM:
case MR_TYPECTOR_REP_ENUM_USEREQ:
case MR_TYPECTOR_REP_DUMMY:
case MR_TYPECTOR_REP_INT:
case MR_TYPECTOR_REP_FLOAT:
case MR_TYPECTOR_REP_CHAR:
case MR_TYPECTOR_REP_STRING:
case MR_TYPECTOR_REP_BITMAP:
case MR_TYPECTOR_REP_FUNC:
case MR_TYPECTOR_REP_PRED:
case MR_TYPECTOR_REP_SUBGOAL:
case MR_TYPECTOR_REP_VOID:
case MR_TYPECTOR_REP_C_POINTER:
case MR_TYPECTOR_REP_STABLE_C_POINTER:
case MR_TYPECTOR_REP_TYPEINFO:
case MR_TYPECTOR_REP_TYPECTORINFO:
case MR_TYPECTOR_REP_TYPEDESC:
case MR_TYPECTOR_REP_TYPECTORDESC:
case MR_TYPECTOR_REP_PSEUDOTYPEDESC:
case MR_TYPECTOR_REP_TYPECLASSINFO:
case MR_TYPECTOR_REP_BASETYPECLASSINFO:
case MR_TYPECTOR_REP_SUCCIP:
case MR_TYPECTOR_REP_HP:
case MR_TYPECTOR_REP_CURFR:
case MR_TYPECTOR_REP_MAXFR:
case MR_TYPECTOR_REP_REDOFR:
case MR_TYPECTOR_REP_REDOIP:
case MR_TYPECTOR_REP_TICKET:
case MR_TYPECTOR_REP_TRAIL_PTR:
case MR_TYPECTOR_REP_REFERENCE:
case MR_TYPECTOR_REP_TUPLE:
case MR_TYPECTOR_REP_ARRAY:
case MR_TYPECTOR_REP_FOREIGN:
case MR_TYPECTOR_REP_STABLE_FOREIGN:
case MR_TYPECTOR_REP_FOREIGN_ENUM:
case MR_TYPECTOR_REP_FOREIGN_ENUM_USEREQ:
case MR_TYPECTOR_REP_UNKNOWN:
return MR_FALSE;
}
MR_fatal_error("MR_named_arg_num: unexpected fallthrough");
}
static MR_ConstString
MR_expand_type_name(MR_TypeCtorInfo tci, MR_bool wrap)
{
MR_String str;
int len;
len = 0;
len += strlen(tci->MR_type_ctor_module_name);
len += 1; /* '.' */
len += strlen(tci->MR_type_ctor_name);
len += 1; /* '/' */
len += 4; /* arity; we do not support arities above 1024 */
if (wrap) {
len += 4; /* <<>> */
}
len += 1; /* NULL */
if (tci->MR_type_ctor_arity > 9999) {
MR_fatal_error("MR_expand_type_name: arity > 9999");
}
MR_restore_transient_hp();
MR_allocate_aligned_string_msg(str, len, MR_ALLOC_SITE_STRING);
MR_save_transient_hp();
sprintf(str, wrap? "<<%s.%s/%d>>" : "%s.%s/%d",
tci->MR_type_ctor_module_name,
tci->MR_type_ctor_name,
(int) tci->MR_type_ctor_arity);
return (MR_ConstString) str;
}
MR_Word
MR_arg_value_uncommon(MR_Word *arg_ptr, const MR_DuArgLocn *arg_locn)
{
#ifdef MR_BOXED_FLOAT
MR_Float flt;
#endif
MR_Word val;
/*
** MR_arg_bits == -1 means the argument is a double-precision floating
** point value occupying two words.
*/
if (arg_locn->MR_arg_bits == -1) {
#ifdef MR_BOXED_FLOAT
flt = MR_float_from_dword(arg_ptr[0], arg_ptr[1]);
#ifdef MR_HIGHLEVEL_CODE
return (MR_Word) MR_box_float(flt);
#else
return MR_float_to_word(flt);
#endif
#else
MR_fatal_error("double-word floats should not exist in this grade");
#endif
}
/* The argument is a packed enumeration value. */
val = *arg_ptr;
val = (val >> arg_locn->MR_arg_shift)
& ((MR_Word) (1 << arg_locn->MR_arg_bits) - 1);
return val;
}
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