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src/share/vm/adlc/filebuff.cpp@acd345f4f9e5 (annotated)

src/share/vm/adlc/filebuff.cpp

Tue, 06 May 2014 09:56:55 -0400

author

lfoltan

date

Tue, 06 May 2014 09:56:55 -0400

changeset 9816

acd345f4f9e5

parent 2314

f95d63e2154a

child 9852

70aa912cebe5

permissions

-rw-r--r--

8041620: Solaris Studio 12.4 C++ 5.13 change in behavior for placing friend declarations within surrounding scope.
Summary: Remove adlc's unused class FileBuffRegion.
Reviewed-by: coleenp, dholmes, kvn

duke@435	1	/*
lfoltan@9816	2	* Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
duke@435	25	// FILEBUFF.CPP - Routines for handling a parser file buffer
duke@435	26	#include "adlc.hpp"
duke@435	27
twisti@1038	28	using namespace std;
twisti@1038	29
duke@435	30	//------------------------------FileBuff---------------------------------------
duke@435	31	// Create a new parsing buffer
duke@435	32	FileBuff::FileBuff( BufferedFile *fptr, ArchDesc& archDesc) : _fp(fptr), _AD(archDesc) {
duke@435	33	_err = fseek(_fp->_fp, 0, SEEK_END); // Seek to end of file
duke@435	34	if (_err) {
duke@435	35	file_error(SEMERR, 0, "File seek error reading input file");
duke@435	36	exit(1); // Exit on seek error
duke@435	37	}
duke@435	38	_filepos = ftell(_fp->_fp); // Find offset of end of file
duke@435	39	_bufferSize = _filepos + 5; // Filepos points to last char, so add padding
duke@435	40	_err = fseek(_fp->_fp, 0, SEEK_SET); // Reset to beginning of file
duke@435	41	if (_err) {
duke@435	42	file_error(SEMERR, 0, "File seek error reading input file\n");
duke@435	43	exit(1); // Exit on seek error
duke@435	44	}
duke@435	45	_filepos = ftell(_fp->_fp); // Reset current file position
never@850	46	_linenum = 0;
duke@435	47
duke@435	48	_bigbuf = new char[_bufferSize]; // Create buffer to hold text for parser
duke@435	49	if( !_bigbuf ) {
duke@435	50	file_error(SEMERR, 0, "Buffer allocation failed\n");
duke@435	51	exit(1); // Exit on allocation failure
duke@435	52	}
twisti@1040	53	*_bigbuf = '\n'; // Lead with a sentinel newline
twisti@1040	54	_buf = _bigbuf+1; // Skip sentinel
duke@435	55	_bufmax = _buf; // Buffer is empty
twisti@1040	56	_bufeol = _bigbuf; // _bufeol points at sentinel
duke@435	57	_filepos = -1; // filepos is in sync with _bufeol
duke@435	58	_bufoff = _offset = 0L; // Offset at file start
duke@435	59
duke@435	60	_bufmax += fread(_buf, 1, _bufferSize-2, _fp->_fp); // Fill buffer & set end value
duke@435	61	if (_bufmax == _buf) {
duke@435	62	file_error(SEMERR, 0, "File read error, no input read\n");
duke@435	63	exit(1); // Exit on read error
duke@435	64	}
twisti@1040	65	*_bufmax = '\n'; // End with a sentinel new-line
twisti@1040	66	*(_bufmax+1) = '\0'; // Then end with a sentinel NULL
duke@435	67	}
duke@435	68
duke@435	69	//------------------------------~FileBuff--------------------------------------
duke@435	70	// Nuke the FileBuff
duke@435	71	FileBuff::~FileBuff() {
duke@435	72	delete _bigbuf;
duke@435	73	}
duke@435	74
duke@435	75	//------------------------------get_line----------------------------------------
duke@435	76	char *FileBuff::get_line(void) {
duke@435	77	char *retval;
duke@435	78
duke@435	79	// Check for end of file & return NULL
duke@435	80	if (_bufeol >= _bufmax) return NULL;
duke@435	81
never@850	82	_linenum++;
duke@435	83	retval = ++_bufeol; // return character following end of previous line
twisti@1040	84	if (*retval == '\0') return NULL; // Check for EOF sentinel
duke@435	85	// Search for newline character which must end each line
duke@435	86	for(_filepos++; *_bufeol != '\n'; _bufeol++)
duke@435	87	_filepos++; // keep filepos in sync with _bufeol
duke@435	88	// _bufeol & filepos point at end of current line, so return pointer to start
duke@435	89	return retval;
duke@435	90	}
duke@435	91
duke@435	92	//------------------------------file_error-------------------------------------
duke@435	93	void FileBuff::file_error(int flag, int linenum, const char *fmt, ...)
duke@435	94	{
duke@435	95	va_list args;
duke@435	96
duke@435	97	va_start(args, fmt);
duke@435	98	switch (flag) {
duke@435	99	case 0: _AD._warnings += _AD.emit_msg(0, flag, linenum, fmt, args);
duke@435	100	case 1: _AD._syntax_errs += _AD.emit_msg(0, flag, linenum, fmt, args);
duke@435	101	case 2: _AD._semantic_errs += _AD.emit_msg(0, flag, linenum, fmt, args);
duke@435	102	default: assert(0, ""); break;
duke@435	103	}
duke@435	104	va_end(args);
duke@435	105	_AD._no_output = 1;
duke@435	106	}