irargs.c

/*
 * Copyright (C) 1995-2008 University of Karlsruhe.  All right reserved.
 *
 * This file is part of libFirm.
 *
 * This file may be distributed and/or modified under the terms of the
 * GNU General Public License version 2 as published by the Free Software
 * Foundation and appearing in the file LICENSE.GPL included in the
 * packaging of this file.
 *
 * Licensees holding valid libFirm Professional Edition licenses may use
 * this file in accordance with the libFirm Commercial License.
 * Agreement provided with the Software.
 *
 * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE.
 */

/**
 * @file
 * @brief    Support for libcore IR object output.
 * @author   Sebastian Hack
 * @version  $Id$
 */
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

#include "bitset.h"

#include <ctype.h>

#include "lc_printf.h"
#include "firm_common.h"
#include "irnode_t.h"
#include "entity_t.h"
#include "irloop_t.h"
#include "tv_t.h"
#include "dbginfo_t.h"

/**
 * identify a firm object type
 */
static int firm_get_arg_type(const lc_arg_occ_t *occ) {
	(void) occ;
	/* Firm objects are always pointer */
	return lc_arg_type_ptr;
}

static int firm_get_arg_type_int(const lc_arg_occ_t *occ) {
	(void) occ;
	return lc_arg_type_int;
}


static int bitset_get_arg_type(const lc_arg_occ_t *occ) {
	(void) occ;
	return lc_arg_type_ptr;
}

static int bitset_emit(lc_appendable_t *app,
    const lc_arg_occ_t *occ, const lc_arg_value_t *arg)
{
	int res = 2;
	bitset_t *b = arg->v_ptr;
	bitset_pos_t p;
	char buf[32];
	const char *prefix = "";

	lc_arg_append(app, occ, "[", 1);
	bitset_foreach(b, p) {
		int n;

		n = snprintf(buf, sizeof(buf), "%s%d", prefix, (int) p);
		lc_arg_append(app, occ, buf, n);
		prefix = ", ";
		res += n;
	}
	lc_arg_append(app, occ, "]", 1);

	return res;
}

/**
 * emit an opaque Firm dbg_info object
 */
static int firm_emit_dbg(lc_appendable_t *app,
    const lc_arg_occ_t *occ, const lc_arg_value_t *arg)
{
	char buf[1024];
	ir_node *irn = arg->v_ptr;
	dbg_info *dbg = get_irn_dbg_info(irn);

	buf[0] = '\0';
	if (dbg && __dbg_info_snprint) {
		if (__dbg_info_snprint(buf, sizeof(buf), dbg) <= 0)
			buf[0] = '\0';
	}
	return lc_arg_append(app, occ, buf, strlen(buf));
}

/**
 * Beware: do not set the entity ld_name
 */
static const char *get_entity_ld_name_ex(ir_entity *ent) {
	if (ent->ld_name)
		return get_entity_ld_name(ent);
	return get_entity_name(ent);
}

/**
 * emit a Firm object
 */
static int firm_emit(lc_appendable_t *app,
    const lc_arg_occ_t *occ, const lc_arg_value_t *arg)
{
#define A(s)    occ->flag_hash ? s " ": ""

	void *X = arg->v_ptr;
	firm_kind *obj = X;
	int i, n;
	ir_node *block;
	char add[64];
	char buf[256];
	char tv_buf[256];
	ir_entity *ent;

	buf[0] = '\0';
	add[0] = '\0';

	if (! X)
		strncpy(buf, "(null)", sizeof(buf));
	else {
		switch (*obj) {
	case k_BAD:
		snprintf(buf, sizeof(buf), "BAD");
		snprintf(add, sizeof(add), "[%p]", X);
		break;
	case k_entity:
		snprintf(buf, sizeof(buf), "%s%s", A("ent"),
			isupper(occ->conversion) ? get_entity_ld_name_ex(X): get_entity_name(X));
		snprintf(add, sizeof(add), "[%ld]", get_entity_nr(X));
		break;
	case k_type:
		snprintf(buf, sizeof(buf), "%s%s:%s", A("type"), get_type_tpop_name(X), get_type_name(X));
		snprintf(add, sizeof(add), "[%ld]", get_type_nr(X));
		break;
	case k_ir_graph:
		if (X == get_const_code_irg())
			snprintf(buf, sizeof(buf), "%s<ConstCodeIrg>", A("irg"));
		else
			snprintf(buf, sizeof(buf), "%s%s", A("irg"), get_entity_name(get_irg_entity(X)));
		snprintf(add, sizeof(add), "[%ld]", get_irg_graph_nr(X));
		break;
	case k_ir_node:
		switch (occ->conversion) {
		case 'B':
			block = is_no_Block(X) ? get_nodes_block(X) : X;
			snprintf(buf, sizeof(buf), "%s%s%s", A("irn"), get_irn_opname(block),
				get_mode_name(get_irn_mode(block)));
			snprintf(add, sizeof(add), "[%ld]", get_irn_node_nr(block));
			break;
		case 'N':
			snprintf(buf, sizeof(buf), "%ld", get_irn_node_nr(X));
			break;
		default:
			if (is_Const(X)) {
				tarval *tv = get_Const_tarval(X);
				if (tv)
					tarval_snprintf(tv_buf, sizeof(tv_buf), tv);
				else
					strncpy(tv_buf, "(NULL)", sizeof(tv_buf));
				snprintf(buf, sizeof(buf), "%s%s%s<%s>", A("irn"), get_irn_opname(X),
					get_mode_name(get_irn_mode(X)), tv_buf);
			}
			else
				snprintf(buf, sizeof(buf), "%s%s%s", A("irn"), get_irn_opname(X),
				get_mode_name(get_irn_mode(X)));
			snprintf(add, sizeof(add), "[%ld:%d]", get_irn_node_nr(X), get_irn_idx(X));
			}
			break;
	case k_ir_mode:
		snprintf(buf, sizeof(buf), "%s%s", A("mode"), get_mode_name(X));
		break;
	case k_tarval:
		tarval_snprintf(tv_buf, sizeof(tv_buf), X);
		snprintf(buf, sizeof(buf), "%s%s", A("tv"), tv_buf);
		break;
	case k_ir_loop:
		snprintf(buf, sizeof(buf), "loop[%d:%d]", get_loop_loop_nr(X), get_loop_depth(X));
		break;
	case k_ir_op:
		snprintf(buf, sizeof(buf), "%s%s", A("op"), get_op_name(X));
		break;
	case k_ir_compound_graph_path:
		n = get_compound_graph_path_length(X);

		for (i = 0; i < n; ++i) {
			ent = get_compound_graph_path_node(X, i);

			strncat(buf, ".", sizeof(buf));
			strncat(buf, get_entity_name(ent), sizeof(buf));
			if (is_Array_type(get_entity_owner(ent))) {
				snprintf(add, sizeof(add), "[%d]",
					get_compound_graph_path_array_index(X, i));
				strncat(buf, add, sizeof(buf));
			}
		}
		add[0] = '\0';
		break;
	case k_ir_extblk:
		snprintf(buf, sizeof(buf), "ExtBlock");
		snprintf(add, sizeof(add), "[%ld]", get_irn_node_nr(get_extbb_leader(X)));
		break;

	default:
		snprintf(buf, sizeof(buf), "UNKWN");
		snprintf(add, sizeof(add), "[%p]", X);
		}
	}

	if (occ->flag_plus)
		strncat(buf, add, sizeof(buf));

	return lc_arg_append(app, occ, buf, strlen(buf));

#undef A
}

/**
 * emit an ident
 */
static int firm_emit_ident(lc_appendable_t *app,
    const lc_arg_occ_t *occ, const lc_arg_value_t *arg)
{
	ident *id = (ident *)arg->v_ptr;
	const char *p = id ? get_id_str(id) : "(null)";

	return lc_arg_append(app, occ, p, strlen(p));
}

/**
 * Emit indent.
 */
static int firm_emit_indent(lc_appendable_t *app,
    const lc_arg_occ_t *occ, const lc_arg_value_t *arg)
{
	int i;
	int width  = occ->width > 0 ? occ->width : 1;
	int amount = arg->v_int * width;

	for (i = 0; i < amount; ++i)
		lc_appendable_chadd(app, (i % width) == 0 ? '|' : ' ');

	return amount;
}

/**
 * Emit pnc.
 */
static int firm_emit_pnc(lc_appendable_t *app,
    const lc_arg_occ_t *occ, const lc_arg_value_t *arg)
{
	int value = arg->v_int;
	const char *p = get_pnc_string(value);

	return lc_arg_append(app, occ, p, strlen(p));
}

lc_arg_env_t *firm_get_arg_env(void)
{

	static lc_arg_env_t *env = NULL;

	static lc_arg_handler_t firm_handler   = { firm_get_arg_type, firm_emit };
	static lc_arg_handler_t ident_handler  = { firm_get_arg_type, firm_emit_ident };
	static lc_arg_handler_t indent_handler = { firm_get_arg_type_int, firm_emit_indent };
	static lc_arg_handler_t pnc_handler    = { firm_get_arg_type_int, firm_emit_pnc };
	static lc_arg_handler_t bitset_handler = { bitset_get_arg_type, bitset_emit };
	static lc_arg_handler_t debug_handler  = { firm_get_arg_type, firm_emit_dbg };

	static struct {
		const char *name;
		char letter;
	} args[] = {
#define X(name, letter) {"firm:" name, letter}
		X("type",      't'),
		X("entity",    'e'),
		X("entity_ld", 'E'),
		X("tarval",    'T'),
		X("irn",       'n'),
		X("op",        'O'),
		X("irn_nr",    'N'),
		X("mode",      'm'),
		X("block",     'B'),
		X("cg_path",   'P'),
#undef X
	};

	size_t i;

	if (env == NULL) {
		env = lc_arg_new_env();
		lc_arg_add_std(env);

		lc_arg_register(env, "firm", 'F', &firm_handler);
		for (i = 0; i < sizeof(args)/sizeof(args[0]); ++i)
			lc_arg_register(env, args[i].name, args[i].letter, &firm_handler);

		lc_arg_register(env, "firm:ident",    'I', &ident_handler);
		lc_arg_register(env, "firm:indent",   'D', &indent_handler);
		lc_arg_register(env, "firm:dbg_info", 'G', &debug_handler);
		lc_arg_register(env, "firm:bitset",   'B', &bitset_handler);
		lc_arg_register(env, "firm:pnc",      '=', &pnc_handler);
	}

	return env;
}