shithub: rgbds

ref: 12458aae6fba3065f671847b70edb6dd77312b6e
dir: /include/asm/warning.h/

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/*
 * This file is part of RGBDS.
 *
 * Copyright (c) 2019, Eldred Habert and RGBDS contributors.
 *
 * SPDX-License-Identifier: MIT
 */

#ifndef WARNING_H
#define WARNING_H

#include "helpers.h"

extern unsigned int nbErrors;

enum WarningID {
	WARNING_ASSERT,		/* Assertions */
	WARNING_BUILTIN_ARG,	/* Invalid args to builtins */
	WARNING_DIV,		/* Division undefined behavior */
	WARNING_EMPTY_DATA_DIRECTIVE,
				/* `db`, `dw` or `dl` with no directive in ROM */
	WARNING_EMPTY_ENTRY,	/* Empty entry in `db`, `dw` or `dl` */
	WARNING_LARGE_CONSTANT,	/* Constants too large */
	WARNING_LONG_STR,	/* String too long for internal buffers */
	WARNING_OBSOLETE,	/* Obsolete things */
	WARNING_SHIFT,		/* Shifting undefined behavior */
	WARNING_SHIFT_AMOUNT,	/* Strange shift amount */
	WARNING_TRUNCATION,	/* Implicit truncation loses some bits */
	WARNING_USER,		/* User warnings */

	NB_WARNINGS,

	/* Warnings past this point are "meta" warnings */
	WARNING_ALL = NB_WARNINGS,
	WARNING_EXTRA,
	WARNING_EVERYTHING,

	NB_WARNINGS_ALL
#define NB_META_WARNINGS (NB_WARNINGS_ALL - NB_WARNINGS)
};

void processWarningFlag(char const *flag);

/*
 * Used to warn the user about problems that don't prevent the generation of
 * valid code.
 */
void warning(enum WarningID id, const char *fmt, ...);

/*
 * Used for errors that compromise the whole assembly process by affecting the
 * following code, potencially making the assembler generate errors caused by
 * the first one and unrelated to the code that the assembler complains about.
 * It is also used when the assembler goes into an invalid state (for example,
 * when it fails to allocate memory).
 */
noreturn_ void fatalerror(const char *fmt, ...);

/*
 * Used for errors that make it impossible to assemble correctly, but don't
 * affect the following code. The code will fail to assemble but the user will
 * get a list of all errors at the end, making it easier to fix all of them at
 * once.
 */
void yyerror(const char *fmt, ...);

#endif