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linemap.h
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linemap.h
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/**
* \file libyasm/linemap.h
* \brief YASM virtual line mapping interface.
*
* \rcs
* $Id$
* \endrcs
*
* \license
* Copyright (C) 2002-2007 Peter Johnson
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND OTHER CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR OTHER CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
* \endlicense
*/
#ifndef YASM_LINEMAP_H
#define YASM_LINEMAP_H
#ifndef YASM_LIB_DECL
#define YASM_LIB_DECL
#endif
/** Create a new line mapping repository.
* \return New repository.
*/
YASM_LIB_DECL
yasm_linemap *yasm_linemap_create(void);
/** Clean up any memory allocated for a repository.
* \param linemap line mapping repository
*/
YASM_LIB_DECL
void yasm_linemap_destroy(yasm_linemap *linemap);
/** Get the current line position in a repository.
* \param linemap line mapping repository
* \return Current virtual line.
*/
YASM_LIB_DECL
unsigned long yasm_linemap_get_current(yasm_linemap *linemap);
/** Get bytecode and source line information, if any, for a virtual line.
* \param linemap line mapping repository
* \param line virtual line
* \param bcp pointer to return bytecode into
* \param sourcep pointer to return source code line pointer into
* \return Zero if source line information available for line, nonzero if not.
* \note If source line information is not available, bcp and sourcep targets
* are set to NULL.
*/
YASM_LIB_DECL
int yasm_linemap_get_source(yasm_linemap *linemap, unsigned long line,
/*@null@*/ yasm_bytecode **bcp,
const char **sourcep);
/** Add bytecode and source line information to the current virtual line.
* \attention Deletes any existing bytecode and source line information for
* the current virtual line.
* \param linemap line mapping repository
* \param bc bytecode (if any)
* \param source source code line
* \note The source code line pointer is NOT kept, it is strdup'ed.
*/
YASM_LIB_DECL
void yasm_linemap_add_source(yasm_linemap *linemap,
/*@null@*/ yasm_bytecode *bc,
const char *source);
/** Go to the next line (increments the current virtual line).
* \param linemap line mapping repository
* \return The current (new) virtual line.
*/
YASM_LIB_DECL
unsigned long yasm_linemap_goto_next(yasm_linemap *linemap);
/** Set a new file/line physical association starting point at the specified
* virtual line. line_inc indicates how much the "real" line is incremented
* by for each virtual line increment (0 is perfectly legal).
* \param linemap line mapping repository
* \param filename physical file name (if NULL, not changed)
* \param virtual_line virtual line number (if 0, linemap->current is used)
* \param file_line physical line number
* \param line_inc line increment
*/
YASM_LIB_DECL
void yasm_linemap_set(yasm_linemap *linemap, /*@null@*/ const char *filename,
unsigned long virtual_line, unsigned long file_line,
unsigned long line_inc);
/** Poke a single file/line association, restoring the original physical
* association starting point. Caution: increments the current virtual line
* twice.
* \param linemap line mapping repository
* \param filename physical file name (if NULL, not changed)
* \param file_line physical line number
* \return The virtual line number of the poked association.
*/
YASM_LIB_DECL
unsigned long yasm_linemap_poke(yasm_linemap *linemap,
/*@null@*/ const char *filename,
unsigned long file_line);
/** Look up the associated physical file and line for a virtual line.
* \param linemap line mapping repository
* \param line virtual line
* \param filename physical file name (output)
* \param file_line physical line number (output)
*/
YASM_LIB_DECL
void yasm_linemap_lookup(yasm_linemap *linemap, unsigned long line,
/*@out@*/ const char **filename,
/*@out@*/ unsigned long *file_line);
/** Traverses all filenames used in a linemap, calling a function on each
* filename.
* \param linemap line mapping repository
* \param d data pointer passed to func on each call
* \param func function
* \return Stops early (and returns func's return value) if func returns a
* nonzero value; otherwise 0.
*/
YASM_LIB_DECL
int yasm_linemap_traverse_filenames
(yasm_linemap *linemap, /*@null@*/ void *d,
int (*func) (const char *filename, void *d));
#endif