192 lines
7.2 KiB
C
192 lines
7.2 KiB
C
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/***************************************************************************/
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/* */
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/* ftdebug.h */
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/* */
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/* Debugging and logging component (specification). */
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/* */
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/* Copyright 1996-1999 by */
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/* David Turner, Robert Wilhelm, and Werner Lemberg. */
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/* */
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/* This file is part of the FreeType project, and may only be used */
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/* modified and distributed under the terms of the FreeType project */
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/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
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/* this file you indicate that you have read the license and */
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/* understand and accept it fully. */
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/* */
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/***************************************************************************/
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/*************************************************************************/
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/* */
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/* This component contains various macros and functions used to ease the */
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/* debugging of the FreeType engine. Its main purpose is in assertion */
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/* checking, tracing, and error detection. */
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/* */
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/* There are now three debugging modes: */
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/* */
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/* - trace mode */
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/* */
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/* Error and trace messages are sent to the log file (which can be the */
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/* standard error output). */
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/* */
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/* - error mode */
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/* */
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/* Only error messages are generated. */
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/* */
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/* - release mode: */
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/* */
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/* No error message is sent nor generated. The code is free from any */
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/* debugging parts. */
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/* */
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/*************************************************************************/
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#ifndef FTDEBUG_H
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#define FTDEBUG_H
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#include <ftconfig.h> /* for FT_DEBUG_LEVEL_TRACE, FT_DEBUG_LEVEL_ERROR */
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifdef FT_DEBUG_LEVEL_TRACE
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typedef enum FT_Trace_
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{
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trace_any = 0,
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/* first, define an enum for each common component */
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trace_io, /* in ftsys */
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trace_memory, /* in ftsys */
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trace_sync, /* in ftsys */
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trace_stream, /* stream manager - see ftstream.c */
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trace_calc, /* computations - see ftcalc.c */
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trace_raster, /* raster - see ftraster.c */
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trace_list, /* list manager - see ftlist.c */
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trace_objs, /* base objects - see ftobjs.c */
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/* then define an enum for each TrueType driver component */
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trace_ttobjs,
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trace_ttload,
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trace_ttgload,
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trace_ttinterp,
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trace_ttcmap,
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trace_ttextend,
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trace_ttdriver,
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/* define an enum for each TrueDoc driver component */
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trace_tdobjs,
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trace_tdload,
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trace_tdgload,
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trace_tdhint,
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trace_tddriver,
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/* define an enum for each Type1 driver component */
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trace_t1objs,
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trace_t1load,
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trace_t1gload,
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trace_t1hint,
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trace_t1driver,
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/* other trace levels */
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trace_init,
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/* the last level must always be `trace_max' */
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trace_max
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} FT_Trace;
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extern char ft_trace_levels[trace_max];
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/*************************************************************************/
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/* */
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/* IMPORTANT! */
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/* */
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/* Each component must define the macro FT_COMPONENT to a valid */
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/* Trace_Component value before using any TRACE macro. */
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/* */
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/*************************************************************************/
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#define FT_TRACE( level, varformat ) \
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if ( ft_trace_levels[FT_COMPONENT] >= level ) \
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FT_Message##varformat
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EXPORT_DEF
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void FT_SetTraceLevel( FT_Trace component,
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char level );
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#elif defined( FT_DEBUG_LEVEL_ERROR )
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#define FT_TRACE( level, varformat ) /* nothing */
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#else /* release mode */
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#define FT_Assert( condition ) /* nothing */
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#define FT_TRACE( level, varformat ) /* nothing */
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#define FT_ERROR( varformat ) /* nothing */
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#endif /* FT_DEBUG_LEVEL_TRACE, FT_DEBUG_LEVEL_ERROR */
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/*************************************************************************/
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/* */
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/* Define macros and functions that are common to the debug and trace */
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/* modes. */
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/* */
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/* You need vprintf() to be able to compile ttdebug.c. */
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/* */
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/*************************************************************************/
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#if defined( FT_DEBUG_LEVEL_TRACE ) || defined( FT_DEBUG_LEVEL_ERROR )
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#include "stdio.h" /* for vprintf() */
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#define FT_Assert( condition ) \
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if ( !(condition) ) \
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FT_Panic( "assertion failed on line %d of file %s\n", __LINE__, __FILE__ );
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extern void FT_Message( const char* fmt, ... );
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/* print a message and exit */
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extern void FT_Panic ( const char* fmt, ... );
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#define FT_ERROR( varformat ) FT_Message##varformat
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#endif /* FT_DEBUG_LEVEL_TRACE || FT_DEBUG_LEVEL_ERROR */
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#define FT_TRACE0( varformat ) FT_TRACE( 0, varformat )
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#define FT_TRACE1( varformat ) FT_TRACE( 1, varformat )
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#define FT_TRACE2( varformat ) FT_TRACE( 2, varformat )
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#define FT_TRACE3( varformat ) FT_TRACE( 3, varformat )
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#define FT_TRACE4( varformat ) FT_TRACE( 4, varformat )
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#define FT_TRACE5( varformat ) FT_TRACE( 5, varformat )
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#define FT_TRACE6( varformat ) FT_TRACE( 6, varformat )
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#define FT_TRACE7( varformat ) FT_TRACE( 7, varformat )
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#ifdef __cplusplus
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}
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#endif
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#endif /* FTDEBUG_H */
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/* END */
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