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author | Alan Mishchenko <alanmi@berkeley.edu> | 2008-01-30 08:01:00 -0800 |
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committer | Alan Mishchenko <alanmi@berkeley.edu> | 2008-01-30 08:01:00 -0800 |
commit | 4d30a1e4f1edecff86d5066ce4653a370e59e5e1 (patch) | |
tree | 366355938a4af0a92f848841ac65374f338d691b /src/base/ver/verStream.c | |
parent | 6537f941887b06e588d3acfc97b5fdf48875cc4e (diff) | |
download | abc-4d30a1e4f1edecff86d5066ce4653a370e59e5e1.tar.gz abc-4d30a1e4f1edecff86d5066ce4653a370e59e5e1.tar.bz2 abc-4d30a1e4f1edecff86d5066ce4653a370e59e5e1.zip |
Version abc80130
Diffstat (limited to 'src/base/ver/verStream.c')
-rw-r--r-- | src/base/ver/verStream.c | 443 |
1 files changed, 0 insertions, 443 deletions
diff --git a/src/base/ver/verStream.c b/src/base/ver/verStream.c deleted file mode 100644 index 9b56bb3f..00000000 --- a/src/base/ver/verStream.c +++ /dev/null @@ -1,443 +0,0 @@ -/**CFile**************************************************************** - - FileName [verStream.c] - - SystemName [ABC: Logic synthesis and verification system.] - - PackageName [Verilog parser.] - - Synopsis [Input file stream, which knows nothing about Verilog.] - - Author [Alan Mishchenko] - - Affiliation [UC Berkeley] - - Date [Ver. 1.0. Started - August 19, 2006.] - - Revision [$Id: verStream.c,v 1.00 2006/08/19 00:00:00 alanmi Exp $] - -***********************************************************************/ - -#include "ver.h" - -//////////////////////////////////////////////////////////////////////// -/// DECLARATIONS /// -//////////////////////////////////////////////////////////////////////// - -#define VER_BUFFER_SIZE 1048576 // 1M - size of the data chunk stored in memory -#define VER_OFFSET_SIZE 65536 // 64K - load new data when less than this is left -#define VER_WORD_SIZE 65536 // 64K - the largest token that can be returned - -#define VER_MINIMUM(a,b) (((a) < (b))? (a) : (b)) - -struct Ver_Stream_t_ -{ - // the input file - char * pFileName; // the input file name - FILE * pFile; // the input file pointer - int nFileSize; // the total number of bytes in the file - int nFileRead; // the number of bytes currently read from file - int nLineCounter; // the counter of lines processed - // temporary storage for data - char * pBuffer; // the buffer - int nBufferSize; // the size of the buffer - char * pBufferCur; // the current reading position - char * pBufferEnd; // the first position not used by currently loaded data - char * pBufferStop; // the position where loading new data will be done - // tokens given to the user - char pChars[VER_WORD_SIZE+5]; // temporary storage for a word (plus end-of-string and two parantheses) - int nChars; // the total number of characters in the word - // status of the parser - int fStop; // this flag goes high when the end of file is reached -}; - -static void Ver_StreamReload( Ver_Stream_t * p ); - -//////////////////////////////////////////////////////////////////////// -/// FUNCTION DEFINITIONS /// -//////////////////////////////////////////////////////////////////////// - -/**Function************************************************************* - - Synopsis [Starts the file reader for the given file.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -Ver_Stream_t * Ver_StreamAlloc( char * pFileName ) -{ - Ver_Stream_t * p; - FILE * pFile; - int nCharsToRead; - // check if the file can be opened - pFile = fopen( pFileName, "rb" ); - if ( pFile == NULL ) - { - printf( "Ver_StreamAlloc(): Cannot open input file \"%s\".\n", pFileName ); - return NULL; - } - // start the file reader - p = ALLOC( Ver_Stream_t, 1 ); - memset( p, 0, sizeof(Ver_Stream_t) ); - p->pFileName = pFileName; - p->pFile = pFile; - // get the file size, in bytes - fseek( pFile, 0, SEEK_END ); - p->nFileSize = ftell( pFile ); - rewind( pFile ); - // allocate the buffer - p->pBuffer = ALLOC( char, VER_BUFFER_SIZE+1 ); - p->nBufferSize = VER_BUFFER_SIZE; - p->pBufferCur = p->pBuffer; - // determine how many chars to read - nCharsToRead = VER_MINIMUM(p->nFileSize, VER_BUFFER_SIZE); - // load the first part into the buffer - fread( p->pBuffer, nCharsToRead, 1, p->pFile ); - p->nFileRead = nCharsToRead; - // set the ponters to the end and the stopping point - p->pBufferEnd = p->pBuffer + nCharsToRead; - p->pBufferStop = (p->nFileRead == p->nFileSize)? p->pBufferEnd : p->pBuffer + VER_BUFFER_SIZE - VER_OFFSET_SIZE; - // start the arrays - p->nLineCounter = 1; // 1-based line counting - return p; -} - -/**Function************************************************************* - - Synopsis [Loads new data into the file reader.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Ver_StreamReload( Ver_Stream_t * p ) -{ - int nCharsUsed, nCharsToRead; - assert( !p->fStop ); - assert( p->pBufferCur > p->pBufferStop ); - assert( p->pBufferCur < p->pBufferEnd ); - // figure out how many chars are still not processed - nCharsUsed = p->pBufferEnd - p->pBufferCur; - // move the remaining data to the beginning of the buffer - memmove( p->pBuffer, p->pBufferCur, nCharsUsed ); - p->pBufferCur = p->pBuffer; - // determine how many chars we will read - nCharsToRead = VER_MINIMUM( p->nBufferSize - nCharsUsed, p->nFileSize - p->nFileRead ); - // read the chars - fread( p->pBuffer + nCharsUsed, nCharsToRead, 1, p->pFile ); - p->nFileRead += nCharsToRead; - // set the ponters to the end and the stopping point - p->pBufferEnd = p->pBuffer + nCharsUsed + nCharsToRead; - p->pBufferStop = (p->nFileRead == p->nFileSize)? p->pBufferEnd : p->pBuffer + VER_BUFFER_SIZE - VER_OFFSET_SIZE; -} - -/**Function************************************************************* - - Synopsis [Stops the file reader.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Ver_StreamFree( Ver_Stream_t * p ) -{ - if ( p->pFile ) - fclose( p->pFile ); - FREE( p->pBuffer ); - free( p ); -} - -/**Function************************************************************* - - Synopsis [Returns the file size.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -char * Ver_StreamGetFileName( Ver_Stream_t * p ) -{ - return p->pFileName; -} - -/**Function************************************************************* - - Synopsis [Returns the file size.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Ver_StreamGetFileSize( Ver_Stream_t * p ) -{ - return p->nFileSize; -} - -/**Function************************************************************* - - Synopsis [Returns the current reading position.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Ver_StreamGetCurPosition( Ver_Stream_t * p ) -{ - return p->nFileRead - (p->pBufferEnd - p->pBufferCur); -} - -/**Function************************************************************* - - Synopsis [Returns the line number for the given token.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Ver_StreamGetLineNumber( Ver_Stream_t * p ) -{ - return p->nLineCounter; -} - - - -/**Function************************************************************* - - Synopsis [Returns current symbol.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -int Ver_StreamIsOkey( Ver_Stream_t * p ) -{ - return !p->fStop; -} - -/**Function************************************************************* - - Synopsis [Returns current symbol.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -char Ver_StreamScanChar( Ver_Stream_t * p ) -{ - assert( !p->fStop ); - return *p->pBufferCur; -} - -/**Function************************************************************* - - Synopsis [Returns current symbol and moves to the next.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -char Ver_StreamPopChar( Ver_Stream_t * p ) -{ - assert( !p->fStop ); - // check if the new data should to be loaded - if ( p->pBufferCur > p->pBufferStop ) - Ver_StreamReload( p ); - // check if there are symbols left - if ( p->pBufferCur == p->pBufferEnd ) // end of file - { - p->fStop = 1; - return -1; - } - // count the lines - if ( *p->pBufferCur == '\n' ) - p->nLineCounter++; - return *p->pBufferCur++; -} - -/**Function************************************************************* - - Synopsis [Skips the current symbol and all symbols from the list.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Ver_StreamSkipChars( Ver_Stream_t * p, char * pCharsToSkip ) -{ - char * pChar, * pTemp; - assert( !p->fStop ); - assert( pCharsToSkip != NULL ); - // check if the new data should to be loaded - if ( p->pBufferCur > p->pBufferStop ) - Ver_StreamReload( p ); - // skip the symbols - for ( pChar = p->pBufferCur; pChar < p->pBufferEnd; pChar++ ) - { - // skip symbols as long as they are in the list - for ( pTemp = pCharsToSkip; *pTemp; pTemp++ ) - if ( *pChar == *pTemp ) - break; - if ( *pTemp == 0 ) // pChar is not found in the list - { - p->pBufferCur = pChar; - return; - } - // count the lines - if ( *pChar == '\n' ) - p->nLineCounter++; - } - // the file is finished or the last part continued - // through VER_OFFSET_SIZE chars till the end of the buffer - if ( p->pBufferStop == p->pBufferEnd ) // end of file - { - p->fStop = 1; - return; - } - printf( "Ver_StreamSkipSymbol() failed to parse the file \"%s\".\n", p->pFileName ); -} - -/**Function************************************************************* - - Synopsis [Skips all symbols until encountering one from the list.] - - Description [] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -void Ver_StreamSkipToChars( Ver_Stream_t * p, char * pCharsToStop ) -{ - char * pChar, * pTemp; - assert( !p->fStop ); - assert( pCharsToStop != NULL ); - // check if the new data should to be loaded - if ( p->pBufferCur > p->pBufferStop ) - Ver_StreamReload( p ); - // skip the symbols - for ( pChar = p->pBufferCur; pChar < p->pBufferEnd; pChar++ ) - { - // skip symbols as long as they are NOT in the list - for ( pTemp = pCharsToStop; *pTemp; pTemp++ ) - if ( *pChar == *pTemp ) - break; - if ( *pTemp == 0 ) // pChar is not found in the list - { - // count the lines - if ( *pChar == '\n' ) - p->nLineCounter++; - continue; - } - // the symbol is found - move position and return - p->pBufferCur = pChar; - return; - } - // the file is finished or the last part continued - // through VER_OFFSET_SIZE chars till the end of the buffer - if ( p->pBufferStop == p->pBufferEnd ) // end of file - { - p->fStop = 1; - return; - } - printf( "Ver_StreamSkipToSymbol() failed to parse the file \"%s\".\n", p->pFileName ); -} - -/**Function************************************************************* - - Synopsis [Returns current word delimited by the set of symbols.] - - Description [Modifies the stream by inserting 0 at the first encounter - of one of the symbols in the list.] - - SideEffects [] - - SeeAlso [] - -***********************************************************************/ -char * Ver_StreamGetWord( Ver_Stream_t * p, char * pCharsToStop ) -{ - char * pChar, * pTemp; - if ( p->fStop ) - return NULL; - assert( pCharsToStop != NULL ); - // check if the new data should to be loaded - if ( p->pBufferCur > p->pBufferStop ) - Ver_StreamReload( p ); - // skip the symbols - p->nChars = 0; - for ( pChar = p->pBufferCur; pChar < p->pBufferEnd; pChar++ ) - { - // skip symbols as long as they are NOT in the list - for ( pTemp = pCharsToStop; *pTemp; pTemp++ ) - if ( *pChar == *pTemp ) - break; - if ( *pTemp == 0 ) // pChar is not found in the list - { - p->pChars[p->nChars++] = *pChar; - if ( p->nChars == VER_WORD_SIZE ) - { - printf( "Ver_StreamGetWord(): The buffer size is exceeded.\n" ); - return NULL; - } - // count the lines - if ( *pChar == '\n' ) - p->nLineCounter++; - continue; - } - // the symbol is found - move the position, set the word end, return the word - p->pBufferCur = pChar; - p->pChars[p->nChars] = 0; - return p->pChars; - } - // the file is finished or the last part continued - // through VER_OFFSET_SIZE chars till the end of the buffer - if ( p->pBufferStop == p->pBufferEnd ) // end of file - { - p->fStop = 1; - p->pChars[p->nChars] = 0; - return p->pChars; - } - printf( "Ver_StreamGetWord() failed to parse the file \"%s\".\n", p->pFileName ); - return NULL; -} - -//////////////////////////////////////////////////////////////////////// -/// END OF FILE /// -//////////////////////////////////////////////////////////////////////// - - |