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author | Devtools Arcadia <arcadia-devtools@yandex-team.ru> | 2022-02-07 18:08:42 +0300 |
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committer | Devtools Arcadia <arcadia-devtools@mous.vla.yp-c.yandex.net> | 2022-02-07 18:08:42 +0300 |
commit | 1110808a9d39d4b808aef724c861a2e1a38d2a69 (patch) | |
tree | e26c9fed0de5d9873cce7e00bc214573dc2195b7 /contrib/libs/antlr3_cpp_runtime/include/antlr3input.inl | |
download | ydb-1110808a9d39d4b808aef724c861a2e1a38d2a69.tar.gz |
intermediate changes
ref:cde9a383711a11544ce7e107a78147fb96cc4029
Diffstat (limited to 'contrib/libs/antlr3_cpp_runtime/include/antlr3input.inl')
-rw-r--r-- | contrib/libs/antlr3_cpp_runtime/include/antlr3input.inl | 619 |
1 files changed, 619 insertions, 0 deletions
diff --git a/contrib/libs/antlr3_cpp_runtime/include/antlr3input.inl b/contrib/libs/antlr3_cpp_runtime/include/antlr3input.inl new file mode 100644 index 0000000000..6837a06540 --- /dev/null +++ b/contrib/libs/antlr3_cpp_runtime/include/antlr3input.inl @@ -0,0 +1,619 @@ +namespace antlr3 { + +template<class ImplTraits> +InputStream<ImplTraits>::InputStream(const ANTLR_UINT8* fileName, ANTLR_UINT32 encoding) +{ + // First order of business is to read the file into some buffer space + // as just straight 8 bit bytes. Then we will work out the encoding and + // byte order and adjust the API functions that are installed for the + // default 8Bit stream accordingly. + // + this->createFileStream(fileName); + + // We have the data in memory now so we can deal with it according to + // the encoding scheme we were given by the user. + // + m_encoding = encoding; + + // Now we need to work out the endian type and install any + // API functions that differ from 8Bit + // + this->setupInputStream(); + + // Now we can set up the file name + // + BaseType::m_streamName = (const char* )fileName; + m_fileName = BaseType::m_streamName; +} + +template<class ImplTraits> +InputStream<ImplTraits>::InputStream(const ANTLR_UINT8* data, ANTLR_UINT32 encoding, ANTLR_UINT32 size, ANTLR_UINT8* name) +{ + // First order of business is to set up the stream and install the data pointer. + // Then we will work out the encoding and byte order and adjust the API functions that are installed for the + // default 8Bit stream accordingly. + // + this->createStringStream(data); + + // Size (in bytes) of the given 'string' + // + m_sizeBuf = size; + + // We have the data in memory now so we can deal with it according to + // the encoding scheme we were given by the user. + // + m_encoding = encoding; + + // Now we need to work out the endian type and install any + // API functions that differ from 8Bit + // + this->setupInputStream(); + + // Now we can set up the file name + // + BaseType::m_streamName = (name == NULL ) ? "" : (const char*)name; + m_fileName = BaseType::m_streamName; + +} + +template<class ImplTraits> +void InputStream<ImplTraits>::createStringStream(const ANTLR_UINT8* data) +{ + if (data == NULL) + { + ParseNullStringException ex; + throw ex; + } + + // Structure was allocated correctly, now we can install the pointer + // + m_data = data; + m_isAllocated = false; + + // Call the common 8 bit input stream handler + // initialization. + // + this->genericSetupStream(); +} + +template<class ImplTraits> +void InputStream<ImplTraits>::createFileStream(const ANTLR_UINT8* fileName) +{ + if (fileName == NULL) + { + ParseFileAbsentException ex; + throw ex; + } + + // Structure was allocated correctly, now we can read the file. + // + FileUtils<ImplTraits>::AntlrRead8Bit(this, fileName); + + // Call the common 8 bit input stream handler + // initialization. + // + this->genericSetupStream(); +} + +template<class ImplTraits> +void InputStream<ImplTraits>::genericSetupStream() +{ + this->set_charByteSize(1); + + /* Set up the input stream brand new + */ + this->reset(); + + /* Install default line separator character (it can be replaced + * by the grammar programmer later) + */ + this->set_newLineChar((ANTLR_UCHAR)'\n'); +} + +template<class ImplTraits> +InputStream<ImplTraits>::~InputStream() +{ + // Free the input stream buffer if we allocated it + // + if (m_isAllocated && (m_data != NULL)) + AllocPolicyType::free((void*)m_data); //const_cast is required +} + +template<class ImplTraits> +ANTLR_INLINE const typename InputStream<ImplTraits>::DataType* InputStream<ImplTraits>::get_data() const +{ + return m_data; +} +template<class ImplTraits> +ANTLR_INLINE bool InputStream<ImplTraits>::get_isAllocated() const +{ + return m_isAllocated; +} +template<class ImplTraits> +ANTLR_INLINE const typename InputStream<ImplTraits>::DataType* InputStream<ImplTraits>::get_nextChar() const +{ + return m_nextChar; +} +template<class ImplTraits> +ANTLR_INLINE ANTLR_UINT32 InputStream<ImplTraits>::get_sizeBuf() const +{ + return m_sizeBuf; +} +template<class ImplTraits> +ANTLR_INLINE ANTLR_UINT32 InputStream<ImplTraits>::get_line() const +{ + return m_line; +} +template<class ImplTraits> +ANTLR_INLINE const typename InputStream<ImplTraits>::DataType* InputStream<ImplTraits>::get_currentLine() const +{ + return m_currentLine; +} +template<class ImplTraits> +ANTLR_INLINE ANTLR_INT32 InputStream<ImplTraits>::get_charPositionInLine() const +{ + return m_charPositionInLine; +} +template<class ImplTraits> +ANTLR_INLINE ANTLR_UINT32 InputStream<ImplTraits>::get_markDepth() const +{ + return m_markDepth; +} +template<class ImplTraits> +ANTLR_INLINE typename InputStream<ImplTraits>::MarkersType& InputStream<ImplTraits>::get_markers() +{ + return m_markers; +} +template<class ImplTraits> +ANTLR_INLINE const typename InputStream<ImplTraits>::StringType& InputStream<ImplTraits>::get_fileName() const +{ + return m_fileName; +} +template<class ImplTraits> +ANTLR_INLINE ANTLR_UINT32 InputStream<ImplTraits>::get_fileNo() const +{ + return m_fileNo; +} +template<class ImplTraits> +ANTLR_INLINE ANTLR_UCHAR InputStream<ImplTraits>::get_newlineChar() const +{ + return m_newlineChar; +} +template<class ImplTraits> +ANTLR_INLINE ANTLR_UINT8 InputStream<ImplTraits>::get_charByteSize() const +{ + return m_charByteSize; +} +template<class ImplTraits> +ANTLR_INLINE ANTLR_UINT32 InputStream<ImplTraits>::get_encoding() const +{ + return m_encoding; +} +template<class ImplTraits> +ANTLR_INLINE void InputStream<ImplTraits>::set_data( DataType* data ) +{ + m_data = data; +} +template<class ImplTraits> +ANTLR_INLINE void InputStream<ImplTraits>::set_isAllocated( bool isAllocated ) +{ + m_isAllocated = isAllocated; +} +template<class ImplTraits> +ANTLR_INLINE void InputStream<ImplTraits>::set_nextChar( const DataType* nextChar ) +{ + m_nextChar = nextChar; +} +template<class ImplTraits> +ANTLR_INLINE void InputStream<ImplTraits>::set_sizeBuf( ANTLR_UINT32 sizeBuf ) +{ + m_sizeBuf = sizeBuf; +} +template<class ImplTraits> +ANTLR_INLINE void InputStream<ImplTraits>::set_line( ANTLR_UINT32 line ) +{ + m_line = line; +} +template<class ImplTraits> +ANTLR_INLINE void InputStream<ImplTraits>::set_currentLine( const DataType* currentLine ) +{ + m_currentLine = currentLine; +} +template<class ImplTraits> +ANTLR_INLINE void InputStream<ImplTraits>::set_charPositionInLine( ANTLR_INT32 charPositionInLine ) +{ + m_charPositionInLine = charPositionInLine; +} +template<class ImplTraits> +ANTLR_INLINE void InputStream<ImplTraits>::set_markDepth( ANTLR_UINT32 markDepth ) +{ + m_markDepth = markDepth; +} +template<class ImplTraits> +ANTLR_INLINE void InputStream<ImplTraits>::set_markers( const MarkersType& markers ) +{ + m_markers = markers; +} +template<class ImplTraits> +ANTLR_INLINE void InputStream<ImplTraits>::set_fileName( const StringType& fileName ) +{ + m_fileName = fileName; +} +template<class ImplTraits> +ANTLR_INLINE void InputStream<ImplTraits>::set_fileNo( ANTLR_UINT32 fileNo ) +{ + m_fileNo = fileNo; +} +template<class ImplTraits> +ANTLR_INLINE void InputStream<ImplTraits>::set_newlineChar( ANTLR_UCHAR newlineChar ) +{ + m_newlineChar = newlineChar; +} +template<class ImplTraits> +ANTLR_INLINE void InputStream<ImplTraits>::set_charByteSize( ANTLR_UINT8 charByteSize ) +{ + m_charByteSize = charByteSize; +} +template<class ImplTraits> +ANTLR_INLINE void InputStream<ImplTraits>::set_encoding( ANTLR_UINT32 encoding ) +{ + m_encoding = encoding; +} + +template<class ImplTraits> +ANTLR_INLINE void InputStream<ImplTraits>::inc_charPositionInLine() +{ + ++m_charPositionInLine; +} + +template<class ImplTraits> +ANTLR_INLINE void InputStream<ImplTraits>::inc_line() +{ + ++m_line; +} + +template<class ImplTraits> +ANTLR_INLINE void InputStream<ImplTraits>::inc_markDepth() +{ + ++m_markDepth; +} + +template<class ImplTraits> +ANTLR_INLINE void InputStream<ImplTraits>::reset() +{ + m_nextChar = m_data; /* Input at first character */ + m_line = 1; /* starts at line 1 */ + m_charPositionInLine = 0; + m_currentLine = m_data; + m_markDepth = 0; /* Reset markers */ + + /* Clear out up the markers table if it is there + */ + m_markers.clear(); +} + +template<class ImplTraits> +void InputStream<ImplTraits>::reuse(ANTLR_UINT8* inString, ANTLR_UINT32 size, ANTLR_UINT8* name) +{ + m_isAllocated = false; + m_data = inString; + m_sizeBuf = size; + + // Now we can set up the file name. As we are reusing the stream, there may already + // be a string that we can reuse for holding the filename. + // + if ( BaseType::m_streamName.empty() ) + { + BaseType::m_streamName = ((name == NULL) ? "-memory-" : (const char *)name); + m_fileName = BaseType::m_streamName; + } + else + { + BaseType::m_streamName = ((name == NULL) ? "-memory-" : (const char *)name); + } + + this->reset(); +} + +/* +template<class ImplTraits> +typename InputStream<ImplTraits>::DataType* InputStream<ImplTraits>::LT(ANTLR_INT32 lt) +{ + return this->LA(lt); +} +*/ + +template<class ImplTraits> +ANTLR_UINT32 InputStream<ImplTraits>::size() +{ + return m_sizeBuf; +} + +template<class ImplTraits> +ANTLR_MARKER InputStream<ImplTraits>::index_impl() +{ + return (ANTLR_MARKER)m_nextChar; +} + + +template<class ImplTraits> +typename InputStream<ImplTraits>::StringType InputStream<ImplTraits>::substr(ANTLR_MARKER start, ANTLR_MARKER stop) +{ + std::size_t len = static_cast<std::size_t>( (stop-start)/sizeof(DataType) + 1 ); + StringType str( (const char*)start, len ); + return str; +} + +template<class ImplTraits> +ANTLR_UINT32 InputStream<ImplTraits>::get_line() +{ + return m_line; +} + +template<class ImplTraits> +const typename InputStream<ImplTraits>::DataType* InputStream<ImplTraits>::getLineBuf() +{ + return m_currentLine; +} + +template<class ImplTraits> +ANTLR_INLINE ANTLR_UINT32 InputStream<ImplTraits>::get_charPositionInLine() +{ + return m_charPositionInLine; +} + +template<class ImplTraits> +ANTLR_INLINE void InputStream<ImplTraits>::set_charPositionInLine(ANTLR_UINT32 position) +{ + m_charPositionInLine = position; +} + +template<class ImplTraits> +void InputStream<ImplTraits>::set_newLineChar(ANTLR_UINT32 newlineChar) +{ + m_newlineChar = newlineChar; +} + +template<class ImplTraits> +ANTLR_INLINE LexState<ImplTraits>::LexState() +{ + m_nextChar = NULL; + m_line = 0; + m_currentLine = NULL; + m_charPositionInLine = 0; +} + +template<class ImplTraits> +ANTLR_INLINE const typename LexState<ImplTraits>::DataType* LexState<ImplTraits>::get_nextChar() const +{ + return m_nextChar; +} + +template<class ImplTraits> +ANTLR_INLINE ANTLR_UINT32 LexState<ImplTraits>::get_line() const +{ + return m_line; +} + +template<class ImplTraits> +ANTLR_INLINE const typename LexState<ImplTraits>::DataType* LexState<ImplTraits>::get_currentLine() const +{ + return m_currentLine; +} + +template<class ImplTraits> +ANTLR_INLINE ANTLR_INT32 LexState<ImplTraits>::get_charPositionInLine() const +{ + return m_charPositionInLine; +} + +template<class ImplTraits> +ANTLR_INLINE void LexState<ImplTraits>::set_nextChar( const DataType* nextChar ) +{ + m_nextChar = nextChar; +} + +template<class ImplTraits> +ANTLR_INLINE void LexState<ImplTraits>::set_line( ANTLR_UINT32 line ) +{ + m_line = line; +} + +template<class ImplTraits> +ANTLR_INLINE void LexState<ImplTraits>::set_currentLine( const DataType* currentLine ) +{ + m_currentLine = currentLine; +} + +template<class ImplTraits> +ANTLR_INLINE void LexState<ImplTraits>::set_charPositionInLine( ANTLR_INT32 charPositionInLine ) +{ + m_charPositionInLine = charPositionInLine; +} + +template<class ImplTraits> +ANTLR_INLINE typename InputStream<ImplTraits>::IntStreamType* InputStream<ImplTraits>::get_istream() +{ + return this; +} + +template<class ImplTraits> +void InputStream<ImplTraits>::setupInputStream() +{ + bool isBigEndian; + + // Used to determine the endianness of the machine we are currently + // running on. + // + ANTLR_UINT16 bomTest = 0xFEFF; + + // What endianess is the machine we are running on? If the incoming + // encoding endianess is the same as this machine's natural byte order + // then we can use more efficient API calls. + // + if (*((ANTLR_UINT8*)(&bomTest)) == 0xFE) + { + isBigEndian = true; + } + else + { + isBigEndian = false; + } + + // What encoding did the user tell us {s}he thought it was? I am going + // to get sick of the questions on antlr-interest, I know I am. + // + switch (m_encoding) + { + case ENC_UTF8: + + // See if there is a BOM at the start of this UTF-8 sequence + // and just eat it if there is. Windows .TXT files have this for instance + // as it identifies UTF-8 even though it is of no consequence for byte order + // as UTF-8 does not have a byte order. + // + if ( (*(m_nextChar)) == 0xEF + && (*(m_nextChar+1)) == 0xBB + && (*(m_nextChar+2)) == 0xBF + ) + { + // The UTF8 BOM is present so skip it + // + m_nextChar += 3; + } + + // Install the UTF8 input routines + // + this->setupIntStream( isBigEndian, isBigEndian ); + this->set_charByteSize(0); + break; + + case ENC_UTF16: + + // See if there is a BOM at the start of the input. If not then + // we assume that the byte order is the natural order of this + // machine (or it is really UCS2). If there is a BOM we determine if the encoding + // is the same as the natural order of this machine. + // + if ( (ANTLR_UINT8)(*((ANTLR_UINT8*)m_nextChar)) == 0xFE + && (ANTLR_UINT8)(*((ANTLR_UINT8*)m_nextChar+1)) == 0xFF + ) + { + // BOM Present, indicates Big Endian + // + m_nextChar += 1; + + this->setupIntStream( isBigEndian, true ); + } + else if ( (ANTLR_UINT8)(*((ANTLR_UINT8*)m_nextChar)) == 0xFF + && (ANTLR_UINT8)(*((ANTLR_UINT8*)m_nextChar+1)) == 0xFE + ) + { + // BOM present, indicates Little Endian + // + m_nextChar += 1; + + this->setupIntStream( isBigEndian, false ); + } + else + { + // No BOM present, assume local computer byte order + // + this->setupIntStream(isBigEndian, isBigEndian); + } + this->set_charByteSize(2); + break; + + case ENC_UTF32: + + // See if there is a BOM at the start of the input. If not then + // we assume that the byte order is the natural order of this + // machine. If there is we determine if the encoding + // is the same as the natural order of this machine. + // + if ( (ANTLR_UINT8)(*((ANTLR_UINT8*)m_nextChar)) == 0x00 + && (ANTLR_UINT8)(*((ANTLR_UINT8*)m_nextChar+1)) == 0x00 + && (ANTLR_UINT8)(*((ANTLR_UINT8*)m_nextChar+2)) == 0xFE + && (ANTLR_UINT8)(*((ANTLR_UINT8*)m_nextChar+3)) == 0xFF + ) + { + // BOM Present, indicates Big Endian + // + m_nextChar += 1; + + this->setupIntStream(isBigEndian, true); + } + else if ( (ANTLR_UINT8)(*((ANTLR_UINT8*)m_nextChar)) == 0xFF + && (ANTLR_UINT8)(*((ANTLR_UINT8*)m_nextChar+1)) == 0xFE + && (ANTLR_UINT8)(*((ANTLR_UINT8*)m_nextChar+1)) == 0x00 + && (ANTLR_UINT8)(*((ANTLR_UINT8*)m_nextChar+1)) == 0x00 + ) + { + // BOM present, indicates Little Endian + // + m_nextChar += 1; + + this->setupIntStream( isBigEndian, false ); + } + else + { + // No BOM present, assume local computer byte order + // + this->setupIntStream( isBigEndian, isBigEndian ); + } + this->set_charByteSize(4); + break; + + case ENC_UTF16BE: + + // Encoding is definately Big Endian with no BOM + // + this->setupIntStream( isBigEndian, true ); + this->set_charByteSize(2); + break; + + case ENC_UTF16LE: + + // Encoding is definately Little Endian with no BOM + // + this->setupIntStream( isBigEndian, false ); + this->set_charByteSize(2); + break; + + case ENC_UTF32BE: + + // Encoding is definately Big Endian with no BOM + // + this->setupIntStream( isBigEndian, true ); + this->set_charByteSize(4); + break; + + case ENC_UTF32LE: + + // Encoding is definately Little Endian with no BOM + // + this->setupIntStream( isBigEndian, false ); + this->set_charByteSize(4); + break; + + case ENC_EBCDIC: + + // EBCDIC is basically the same as ASCII but with an on the + // fly translation to ASCII + // + this->setupIntStream( isBigEndian, isBigEndian ); + this->set_charByteSize(1); + break; + + case ENC_8BIT: + default: + + // Standard 8bit/ASCII + // + this->setupIntStream( isBigEndian, isBigEndian ); + this->set_charByteSize(1); + break; + } +} + +} |