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/* Generated By:JavaCC: Do not edit this line. CharStream.cc Version 7.0 */
/* JavaCCOptions:STATIC=false,SUPPORT_CLASS_VISIBILITY_PUBLIC=true */
#include "CharStream.h"
namespace {
template <class T>
void ArrayCopy(T* src, int src_offset, T* dest, int dest_offset, int len) {
for (int i = 0; i < len; i++) {
dest[dest_offset + i] = src[src_offset + i];
}
}
class StringReaderStream : public ReaderStream {
public:
StringReaderStream(const JJString& str) : str_(str), cur_(0), max_(str.size()) {}
virtual size_t read(JJChar *bufptr, int offset, size_t len) {
size_t count = str_.copy(bufptr + offset, len > max_ ? max_ : len, cur_);
cur_ += count;
max_ -= count;
return count;
}
virtual ~StringReaderStream() {}
virtual bool endOfInput() {
return max_ == 0;
}
private:
const JJString str_;
size_t cur_;
size_t max_;
};
}
namespace vhdl {
namespace parser {
void CharStream::ReInit(const JJString& str, int startline,
int startcolumn, int buffersize) {
StringReaderStream *stream = new StringReaderStream(str);
ReInit(stream, startline, startcolumn, buffersize);
deleteStream = true;
}
void CharStream::ReInit(ReaderStream *input_stream, int startline,
int startcolumn, int buffersize) {
if (deleteStream) {
delete inputStream;
}
if (buffer) {
DeleteBuffers();
}
available = bufsize = buffersize;
buffer = new JJChar[buffersize];
bufline = new int[buffersize];
bufcolumn = new int[buffersize];
column = startcolumn - 1;
inputStream = input_stream;
line = startline;
prevCharIsLF = prevCharIsCR = false;
tokenBegin = inBuf = maxNextCharInd = 0;
bufpos = -1;
deleteStream = false;
}
void CharStream::DeleteBuffers() {
delete[] buffer;
delete[] bufline;
delete[] bufcolumn;
}
void CharStream::adjustBeginLineColumn(int newLine, int newCol) {
int start = tokenBegin;
int len;
if (bufpos >= tokenBegin) {
len = bufpos - tokenBegin + inBuf + 1;
} else {
len = bufsize - tokenBegin + bufpos + 1 + inBuf;
}
int i = 0, j = 0, k = 0;
int nextColDiff = 0, columnDiff = 0;
while (i < len && bufline[j = start % bufsize] ==
bufline[k = (start + 1) % bufsize]) {
bufline[j] = newLine;
nextColDiff = columnDiff + bufcolumn[k] - bufcolumn[j];
bufcolumn[j] = newCol + columnDiff;
columnDiff = nextColDiff;
i++;
start++;
}
if (i < len) {
bufline[j] = newLine++;
bufcolumn[j] = newCol + columnDiff;
while (i++ < len) {
if (bufline[j = start % bufsize] != bufline[(start + 1) % bufsize])
bufline[j] = newLine++;
else
bufline[j] = newLine;
start++;
}
}
line = bufline[j];
column = bufcolumn[j];
}
void CharStream::ExpandBuff(bool wrapAround) {
JJChar *newbuffer = new JJChar[bufsize + 2048];
int *newbufline = new int[bufsize + 2048];
int *newbufcolumn = new int[bufsize + 2048];
if (wrapAround) {
ArrayCopy(buffer, tokenBegin, newbuffer, 0, bufsize - tokenBegin);
ArrayCopy(buffer, 0, newbuffer, bufsize - tokenBegin, bufpos);
ArrayCopy(bufline, tokenBegin, newbufline, 0, bufsize - tokenBegin);
ArrayCopy(bufline, 0, newbufline, bufsize - tokenBegin, bufpos);
ArrayCopy(bufcolumn, tokenBegin, newbufcolumn, 0, bufsize - tokenBegin);
ArrayCopy(bufcolumn, 0, newbufcolumn, bufsize - tokenBegin, bufpos);
bufpos += (bufsize - tokenBegin);
} else {
ArrayCopy(buffer, tokenBegin, newbuffer, 0, bufsize - tokenBegin);
ArrayCopy(bufline, tokenBegin, newbufline, 0, bufsize - tokenBegin);
ArrayCopy(bufcolumn, tokenBegin, newbufcolumn, 0, bufsize - tokenBegin);
bufpos -= tokenBegin;
}
maxNextCharInd = bufpos;
DeleteBuffers();
buffer = newbuffer;
bufline = newbufline;
bufcolumn = newbufcolumn;
bufsize += 2048;
available = bufsize;
tokenBegin = 0;
}
void CharStream::FillBuff() {
if (maxNextCharInd == available) {
if (available == bufsize) {
if (tokenBegin > 2048) {
bufpos = maxNextCharInd = 0;
available = tokenBegin;
} else if (tokenBegin < 0) {
bufpos = maxNextCharInd = 0;
} else {
ExpandBuff(false);
}
} else if (available > tokenBegin) {
available = bufsize;
} else if ((tokenBegin - available) < 2048) {
ExpandBuff(true);
} else {
available = tokenBegin;
}
}
size_t i = inputStream->read(buffer, maxNextCharInd, available - maxNextCharInd);
if (i > 0) {
maxNextCharInd += i;
} else {
--bufpos;
backup(0);
if (tokenBegin == -1) {
tokenBegin = bufpos;
}
}
}
void CharStream::UpdateLineColumn(JJChar c) {
column++;
if (prevCharIsLF) {
prevCharIsLF = false;
column = 1;
line++;
} else if (prevCharIsCR) {
prevCharIsCR = false;
if (c == '\n') {
prevCharIsLF = true;
} else {
column = 1;
line++;
}
}
switch (c) {
case '\r' :
prevCharIsCR = true;
break;
case '\n' :
prevCharIsLF = true;
break;
case '\t' :
column--;
column += (tabSize - (column % tabSize));
break;
default :
break;
}
bufline[bufpos] = line;
bufcolumn[bufpos] = column;
}
}
}
/* JavaCC - OriginalChecksum=0ba78d6c493d812eba61de6fa794fd15 (do not edit this line) */
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