/**********************************************************/

/*  apimagic: cparser-based API normalization utility     */

/*  Copyright (C) 2015--2016  Z. Gilboa                   */

/*  Released under GPLv2 and GPLv3; see COPYING.APIMAGIC. */

/**********************************************************/

#include <stdio.h>

#include <cparser/ast/ast_t.h>

#include <cparser/ast/entity_t.h>

#include <cparser/ast/symbol_t.h>

#include <apimagic/apimagic.h>

#include "apimagic_driver_impl.h"

static int output_enum(

	const char *			symbol,

	const struct amgc_entity	enumvals[],

	const struct amgc_layout *	layout,

	FILE *				fout)

{

	const struct amgc_entity *	enumval;

	struct amgc_layout		elayout;

	size_t				len;

	if (!layout || !layout->symwidth) {

		if (!layout)

			memset(&elayout,0,sizeof(elayout));

		else

			memcpy(&elayout,layout,sizeof(elayout));

		if (!elayout.tabwidth)

			elayout.tabwidth = AMGC_TAB_WIDTH;

		layout  = &elayout;

		enumval = enumvals;

		for (; enumval->entity || enumval->altname; enumval++) {

			len = strlen(enumval->altname

				? enumval->altname

				: enumval->entity->base.symbol->string);

			if (len > elayout.symwidth)

				elayout.symwidth = len;

		}

	}

	if (layout->header && (fputs(layout->header,fout) < 0))

		return -1;

	if (fprintf(fout,"enum %s {\n",symbol) < 0)

		return -1;

	for (enumval=enumvals; enumval->entity || enumval->altname; enumval++) {

		symbol = enumval->altname

			? enumval->altname

			: enumval->entity->base.symbol->string;

		if (fprintf(fout,"\t%s",symbol) < 0)

			return -1;

		if (amgc_output_pad_symbol(symbol,layout,fout) < 0)

			return -1;

		if ((enumval->enumval < 0) && (enumval->enumval > -128))

			fprintf(fout,"= (%d)",enumval->enumval);

		else if ((enumval->enumval >= 0) && (enumval->enumval < 2048))

			fprintf(fout,"= %d",enumval->enumval);

		else

			fprintf(fout,"= 0x%08x",enumval->enumval);

		if (fputs(",\n",fout) < 0)

			return -1;

	}

	if (fputs("};\n",fout) < 0)

		return -1;

	if (layout->footer && (fputs(layout->footer,fout) < 0))

		return -1;

	return 0;

}

int amgc_output_unit_enum(

	const struct amgc_unit_ctx *	uctx,

	const union entity_t *		entity,

	const struct amgc_layout *	layout,

	FILE *				fout)

{

	struct amgc_entity *	enumvals;

	int			ret;

	if (entity->base.kind != ENTITY_ENUM)

		return -1;

	else if (amgc_get_enum_members(uctx,entity,&enumvals))

		return -1;

	ret = output_enum(entity->base.symbol->string,enumvals,layout,fout);

	amgc_free_enum_members(enumvals);

	return ret;

}

int amgc_output_custom_enum(

	const struct amgc_entity *	penum,

	const struct amgc_entity	enumvals[],

	const struct amgc_layout *	layout,

	FILE *				fout)

{

	const struct amgc_entity * aentity;

	if (penum->entity && penum->entity->base.kind != ENTITY_ENUM)

		return -1;

	else if (!penum->entity && !penum->altname)

		return -1;

	for (aentity=enumvals; aentity->entity || aentity->altname; aentity++)

		if (aentity->entity && aentity->entity->base.kind != ENTITY_ENUM_VALUE)

			return -1;

	return output_enum(penum->entity

				? penum->entity->base.symbol->string

				: penum->altname,

			enumvals,layout,fout);

}