2 * \file libyasm/errwarn.h
3 * \brief YASM error and warning reporting interface.
6 * Copyright (C) 2001-2007 Peter Johnson
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * - Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * - Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND OTHER CONTRIBUTORS ``AS IS''
18 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR OTHER CONTRIBUTORS BE
21 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27 * POSSIBILITY OF SUCH DAMAGE.
30 #ifndef YASM_ERRWARN_H
31 #define YASM_ERRWARN_H
37 /** Warning classes (that may be enabled/disabled). */
38 typedef enum yasm_warn_class {
39 YASM_WARN_NONE = 0, /**< No warning */
40 YASM_WARN_GENERAL, /**< Non-specific warnings */
41 YASM_WARN_UNREC_CHAR, /**< Unrecognized characters (while tokenizing) */
42 YASM_WARN_PREPROC, /**< Preprocessor warnings */
43 YASM_WARN_ORPHAN_LABEL, /**< Label alone on a line without a colon */
44 YASM_WARN_UNINIT_CONTENTS, /**< Uninitialized space in code/data section */
45 YASM_WARN_SIZE_OVERRIDE,/**< Double size override */
46 YASM_WARN_IMPLICIT_SIZE_OVERRIDE /**< Implicit size override */
49 /** Error classes. Bitmask-based to support limited subclassing. */
50 typedef enum yasm_error_class {
51 YASM_ERROR_NONE = 0x0000, /**< No error */
52 YASM_ERROR_GENERAL = 0xFFFF, /**< Non-specific */
53 YASM_ERROR_ARITHMETIC = 0x0001, /**< Arithmetic error (general) */
54 YASM_ERROR_OVERFLOW = 0x8001, /**< Arithmetic overflow */
55 YASM_ERROR_FLOATING_POINT = 0x4001, /**< Floating point error */
56 YASM_ERROR_ZERO_DIVISION = 0x2001, /**< Divide-by-zero */
57 YASM_ERROR_ASSERTION = 0x0002, /**< Assertion error */
58 YASM_ERROR_VALUE = 0x0004, /**< Value inappropriate
59 * (e.g. not in range) */
60 YASM_ERROR_NOT_ABSOLUTE = 0x8004, /**< Absolute expression required */
61 YASM_ERROR_TOO_COMPLEX = 0x4004, /**< Expression too complex */
62 YASM_ERROR_NOT_CONSTANT = 0x2004, /**< Constant expression required */
63 YASM_ERROR_IO = 0x0008, /**< I/O error */
64 YASM_ERROR_NOT_IMPLEMENTED = 0x0010, /**< Not implemented error */
65 YASM_ERROR_TYPE = 0x0020, /**< Type error */
66 YASM_ERROR_SYNTAX = 0x0040, /**< Syntax error */
67 YASM_ERROR_PARSE = 0x8040 /**< Parser error */
70 /** Initialize any internal data structures. */
72 void yasm_errwarn_initialize(void);
74 /** Clean up any memory allocated by yasm_errwarn_initialize() or other
78 void yasm_errwarn_cleanup(void);
80 /** Reporting point of internal errors. These are usually due to sanity
81 * check failures in the code.
82 * \warning This function must NOT return to calling code; exit or longjmp
84 * \param file source file (ala __FILE__)
85 * \param line source line (ala __LINE__)
86 * \param message internal error message
89 extern /*@exits@*/ void (*yasm_internal_error_)
90 (const char *file, unsigned int line, const char *message);
92 /** Easily-callable version of yasm_internal_error_(). Automatically uses
93 * __FILE__ and __LINE__ as the file and line.
94 * \param message internal error message
96 #define yasm_internal_error(message) \
97 yasm_internal_error_(__FILE__, __LINE__, message)
99 /** Reporting point of fatal errors.
100 * \warning This function must NOT return to calling code; exit or longjmp
102 * \param message fatal error message
103 * \param va va_list argument list for message
106 extern /*@exits@*/ void (*yasm_fatal) (const char *message, va_list va);
108 /** Reporting point of fatal errors, with variable arguments (internal only).
109 * \warning This function calls #yasm_fatal, and thus does not return to the
111 * \param message fatal error message
112 * \param ... argument list for message
115 /*@exits@*/ void yasm__fatal(const char *message, ...);
117 /** Unconditionally clear the error indicator, freeing any associated data.
118 * Has no effect if the error indicator is not set.
121 void yasm_error_clear(void);
123 /** Get the error indicator. YASM_ERROR_NONE is returned if no error has
124 * been set. Note that as YASM_ERROR_NONE is 0, the return value can also
125 * be treated as a boolean value.
126 * \return Current error indicator.
128 yasm_error_class yasm_error_occurred(void);
130 /** Check the error indicator against an error class. To check if any error
131 * has been set, check against the YASM_ERROR_GENERAL class. This function
132 * properly checks error subclasses.
133 * \param eclass base error class to check against
134 * \return Nonzero if error indicator is set and a subclass of eclass, 0
138 int yasm_error_matches(yasm_error_class eclass);
142 extern yasm_error_class yasm_eclass;
143 #define yasm_error_occurred() yasm_eclass
146 /** Set the error indicator (va_list version). Has no effect if the error
147 * indicator is already set.
148 * \param eclass error class
149 * \param format printf format string
150 * \param va argument list for format
153 void yasm_error_set_va(yasm_error_class eclass, const char *format, va_list va);
155 /** Set the error indicator. Has no effect if the error indicator is already
157 * \param eclass error class
158 * \param format printf format string
159 * \param ... argument list for format
162 void yasm_error_set(yasm_error_class eclass, const char *format, ...)
165 /** Set a cross-reference for a new error (va_list version). Has no effect
166 * if the error indicator is already set (e.g. with yasm_error_set()). This
167 * function must be called prior to its corresponding yasm_error_set() call.
168 * \param xrefline virtual line to cross-reference to (should not be 0)
169 * \param format printf format string
170 * \param va argument list for format
173 void yasm_error_set_xref_va(unsigned long xrefline, const char *format,
176 /** Set a cross-reference for a new error. Has no effect if the error
177 * indicator is already set (e.g. with yasm_error_set()). This function
178 * must be called prior to its corresponding yasm_error_set() call.
179 * \param xrefline virtual line to cross-reference to (should not be 0)
180 * \param format printf format string
181 * \param ... argument list for format
184 void yasm_error_set_xref(unsigned long xrefline, const char *format, ...)
187 /** Fetch the error indicator and all associated data. If the error
188 * indicator is set, the output pointers are set to the current error
189 * indicator values, and the error indicator is cleared.
190 * The code using this function is then responsible for yasm_xfree()'ing
191 * str and xrefstr (if non-NULL). If the error indicator is not set,
192 * all output values are set to 0 (including eclass, which is set to
194 * \param eclass error class (output)
195 * \param str error message
196 * \param xrefline virtual line used for cross-referencing (0 if no xref)
197 * \param xrefstr cross-reference error message (NULL if no xref)
200 void yasm_error_fetch(/*@out@*/ yasm_error_class *eclass,
201 /*@out@*/ /*@only@*/ /*@null@*/ char **str,
202 /*@out@*/ unsigned long *xrefline,
203 /*@out@*/ /*@only@*/ /*@null@*/ char **xrefstr);
205 /** Unconditionally clear all warning indicators, freeing any associated data.
206 * Has no effect if no warning indicators have been set.
209 void yasm_warn_clear(void);
211 /** Get the first warning indicator. YASM_WARN_NONE is returned if no warning
212 * has been set. Note that as YASM_WARN_NONE is 0, the return value can also
213 * be treated as a boolean value.
214 * \return First warning indicator.
217 yasm_warn_class yasm_warn_occurred(void);
219 /** Add a warning indicator (va_list version).
220 * \param wclass warning class
221 * \param format printf format string
222 * \param va argument list for format
225 void yasm_warn_set_va(yasm_warn_class wclass, const char *format, va_list va);
227 /** Add a warning indicator.
228 * \param wclass warning class
229 * \param format printf format string
230 * \param ... argument list for format
233 void yasm_warn_set(yasm_warn_class wclass, const char *format, ...)
236 /** Fetch the first warning indicator and all associated data. If there
237 * is at least one warning indicator, the output pointers are set to the
238 * first warning indicator values, and first warning indicator is removed.
239 * The code using this function is then responsible for yasm_xfree()'ing
240 * str and xrefstr (if non-NULL). If there is no warning indicator set,
241 * all output values are set to 0 (including wclass, which is set to
243 * \param wclass warning class (output)
244 * \param str warning message
247 void yasm_warn_fetch(/*@out@*/ yasm_warn_class *wclass,
248 /*@out@*/ /*@only@*/ char **str);
250 /** Enable a class of warnings.
251 * \param wclass warning class
254 void yasm_warn_enable(yasm_warn_class wclass);
256 /** Disable a class of warnings.
257 * \param wclass warning class
260 void yasm_warn_disable(yasm_warn_class wclass);
262 /** Disable all classes of warnings. */
264 void yasm_warn_disable_all(void);
266 /** Create an error/warning set for collection of multiple error/warnings.
267 * \return Newly allocated set.
270 /*@only@*/ yasm_errwarns *yasm_errwarns_create(void);
272 /** Destroy an error/warning set.
273 * \param errwarns error/warning set
276 void yasm_errwarns_destroy(/*@only@*/ yasm_errwarns *errwarns);
278 /** Propagate error indicator and warning indicator(s) to an error/warning set.
279 * Has no effect if the error indicator and warning indicator are not set.
280 * Does not print immediately; yasm_errwarn_output_all() outputs
281 * accumulated errors and warnings.
282 * Generally multiple errors on the same line will be reported, but errors
283 * of class YASM_ERROR_PARSE will get overwritten by any other class on the
285 * \param errwarns error/warning set
286 * \param line virtual line
289 void yasm_errwarn_propagate(yasm_errwarns *errwarns, unsigned long line);
291 /** Get total number of errors logged.
292 * \param errwarns error/warning set
293 * \param warning_as_error if nonzero, warnings are treated as errors.
294 * \return Number of errors.
297 unsigned int yasm_errwarns_num_errors(yasm_errwarns *errwarns,
298 int warning_as_error);
300 /** Print out an error.
301 * \param fn filename of source file
302 * \param line line number
303 * \param msg error message
304 * \param xref_fn cross-referenced source filename
305 * \param xref_line cross-referenced line number
306 * \param xref_msg cross-referenced error message
308 typedef void (*yasm_print_error_func)
309 (const char *fn, unsigned long line, const char *msg,
310 /*@null@*/ const char *xref_fn, unsigned long xref_line,
311 /*@null@*/ const char *xref_msg);
313 /** Print out a warning.
314 * \param fn filename of source file
315 * \param line line number
316 * \param msg warning message
318 typedef void (*yasm_print_warning_func)
319 (const char *fn, unsigned long line, const char *msg);
321 /** Outputs error/warning set in sorted order (sorted by virtual line number).
322 * \param errwarns error/warning set
323 * \param lm line map (to convert virtual lines into filename/line pairs)
324 * \param warning_as_error if nonzero, treat warnings as errors.
325 * \param print_error function called to print out errors
326 * \param print_warning function called to print out warnings
329 void yasm_errwarns_output_all
330 (yasm_errwarns *errwarns, yasm_linemap *lm, int warning_as_error,
331 yasm_print_error_func print_error, yasm_print_warning_func print_warning);
333 /** Convert a possibly unprintable character into a printable string.
335 * \param ch possibly unprintable character
336 * \return Printable string representation (static buffer).
339 char *yasm__conv_unprint(int ch);
341 /** Hook for library users to map to gettext() if GNU gettext is being used.
342 * \param msgid message catalog identifier
343 * \return Translated message.
346 extern const char * (*yasm_gettext_hook) (const char *msgid);