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File: [local] / src / usr.bin / make / lowparse.h (download)
Revision 1.11, Tue Oct 2 10:29:31 2012 UTC (11 years, 7 months ago) by espie
more changes, discussed and tested by various people. - put back some job control, turns out it's necessary when we don't run a shell. - zap old #ifdef CLEANUP code... probably doesn't even compile. - kill most of the OP_LIB code. Just keep a wee little bit for compatibility (deprecated .LIBS and .INCLUDES, warns for weird dependencies instead of erroring out). - much improved debugging and -p output: sort variables, targets, rules, output stuff in a nicer format mimicing input. - better error message when no command is found, explain where the target comes from. - sort final error list by file. - show system files in errors as <bsd.prog.mk> - reincorporate random delay, that was dropped - optimize siginfo output by not regenerating the whole string each time. - finish zapping old LocationInfo field that's no longer used. |
#ifndef LOWPARSE_H #define LOWPARSE_H /* $OpenBSD: lowparse.h,v 1.11 2012/10/02 10:29:31 espie Exp $ */ /* * Copyright (c) 1999 Marc Espie. * * Extensive code changes for the OpenBSD project. * * 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 OPENBSD PROJECT AND 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 OPENBSD * PROJECT OR 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. */ /* low-level parsing module: * select input stream to parse, and do high-speed processing of * lines: skipping comments, handling continuation lines, or skipping * over dead conditionals. * * Basic template: * * Parse_Fromxxx(source); * do { * while ((line = Parse_ReadNormalLine(&buf)) != NULL) { * handle line, use Parse_Fromxxx to push includes, * Parse_ReadNextConditional to get over non-conditional lines. * or Parse_ReadUnparsedLine to handle special cases manually. * } * } while (Parse_NextFile()); */ /* Selection of input stream */ /* Parse_FromFile(filename, filehandle); * Push given filehandle on the input stack, using filename for diagnostic * messages. The module assumes ownership of the filehandle and of * the filename: provide copies if necessary. */ extern void Parse_FromFile(const char *, FILE *); /* Parse_FromString(str, lineno); * Push expanded string str on the input stack, assuming it starts at * lineno in the current file. This is used to reparse .for loops * after the variable has been expanded, hence no need to respecify * the filename. The module assumes ownership of the string: provide a * copy if necessary. */ extern void Parse_FromString(char *, unsigned long); /* Error reporting, and tagging of read structures. */ /* lineno = Parse_Getlineno(); * Returns the current lineno. */ extern unsigned long Parse_Getlineno(void); /* name = Parse_Getfilename(); * Returns the current filename. Safe to keep without copying. */ extern const char *Parse_Getfilename(void); /* Parse_FillLocation(origin) * Fill the location pointed by origin with the current location. */ extern void Parse_FillLocation(Location *); /* Parse_SetLocation(origin) * Set the "parse location" to a given origin. * Used for parse errors that occur during variable expansion at * runtime. */ extern void Parse_SetLocation(Location *); /* continue = Parse_NextFile(); * Advance parsing to the next file in the input stack. Returns true * if there is parsing left to do. */ extern bool Parse_NextFile(void); /* line = Parse_ReadNormalLine(buf); * Reads next line into buffer and return its contents. Handles line * continuation, remove extra blanks, and skip trivial comments. tabs at * beginning of line are left alone, to be able to recognize target * lines. */ extern char *Parse_ReadNormalLine(Buffer); /* line = ParseReadNextConditionalLine(buf); * Returns next conditional line, skipping over everything else. */ extern char *Parse_ReadNextConditionalLine(Buffer); /* line = ParseReadUnparsedLine(buf, type); * Reads line without parsing anything beyond continuations. * Handle special cases such as conditional lines, or lines that * need a reparse (loops). */ extern char *Parse_ReadUnparsedLine(Buffer, const char *); /* Parse_ReportErrors(); * At end of parsing, report on fatal errors. */ extern void Parse_ReportErrors(void); extern void Parse_setcurdir(const char *); #endif