void jslPrintTokenLineMarker(vcbprintf_callback user_callback, void *user_data, size_t tokenPos, char *prefix) {
size_t line = 1,col = 1;
jsvGetLineAndCol(lex->sourceVar, tokenPos, &line, &col);
size_t startOfLine = jsvGetIndexFromLineAndCol(lex->sourceVar, line, 1);
size_t lineLength = jsvGetCharsOnLine(lex->sourceVar, line);
size_t prefixLength = 0;
if (prefix) {
user_callback(prefix, user_data);
prefixLength = strlen(prefix);
}
if (lineLength>60 && tokenPos-startOfLine>30) {
cbprintf(user_callback, user_data, "...");
size_t skipChars = tokenPos-30 - startOfLine;
startOfLine += 3+skipChars;
if (skipChars<=col)
col -= skipChars;
else
col = 0;
lineLength -= skipChars;
}
// print the string until the end of the line, or 60 chars (whichever is less)
int chars = 0;
JsvStringIterator it;
jsvStringIteratorNew(&it, lex->sourceVar, startOfLine);
unsigned char lastch = 0;
while (jsvStringIteratorHasChar(&it) && chars<60) {
unsigned char ch = (unsigned char)jsvStringIteratorGetChar(&it);
if (ch == '\n') break;
if (jslNeedSpaceBetween(lastch, ch)) {
col++;
user_callback(" ", user_data);
}
char buf[32];
jslFunctionCharAsString(ch, buf, sizeof(buf));
size_t len = strlen(buf);
col += len-1;
user_callback(buf, user_data);
chars++;
lastch = ch;
jsvStringIteratorNext(&it);
}
jsvStringIteratorFree(&it);
if (lineLength > 60)
user_callback("...", user_data);
user_callback("\n", user_data);
col += prefixLength;
while (col-- > 1) user_callback(" ", user_data);
user_callback("^\n", user_data);
}
void jslPrintTokenLineMarker(vcbprintf_callback user_callback, void *user_data, size_t tokenPos, char *prefix) {
size_t line = 1,col = 1;
jsvGetLineAndCol(lex->sourceVar, tokenPos, &line, &col);
size_t startOfLine = jsvGetIndexFromLineAndCol(lex->sourceVar, line, 1);
size_t lineLength = jsvGetCharsOnLine(lex->sourceVar, line);
size_t prefixLength = 0;
if (prefix) {
user_callback(prefix, user_data);
prefixLength = strlen(prefix);
}
if (lineLength>60 && tokenPos-startOfLine>30) {
cbprintf(user_callback, user_data, "...");
size_t skipChars = tokenPos-30 - startOfLine;
startOfLine += 3+skipChars;
col -= skipChars;
lineLength -= skipChars;
}
// print the string until the end of the line, or 60 chars (whichever is lesS)
int chars = 0;
JsvStringIterator it;
jsvStringIteratorNew(&it, lex->sourceVar, startOfLine);
while (jsvStringIteratorHasChar(&it) && chars<60) {
char ch = jsvStringIteratorGetChar(&it);
if (ch == '\n') break;
char buf[2];
buf[0] = ch;
buf[1] = 0;
user_callback(buf, user_data);
chars++;
jsvStringIteratorNext(&it);
}
jsvStringIteratorFree(&it);
if (lineLength > 60)
user_callback("...", user_data);
user_callback("\n", user_data);
col += prefixLength;
while (col-- > 1) user_callback(" ", user_data);
user_callback("^\n", user_data);
}
