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#include "scanner.h"
#include "regex.h"
#include "exp.h"
#include "yaml-cpp/exceptions.h"
namespace YAML
{
const std::string ScanVerbatimTag(Stream& INPUT)
{
std::string tag;
// eat the start character
INPUT.get();
while(INPUT) {
if(INPUT.peek() == Keys::VerbatimTagEnd) {
// eat the end character
INPUT.get();
return tag;
}
int n = Exp::URI().Match(INPUT);
if(n <= 0)
break;
tag += INPUT.get(n);
}
throw ParserException(INPUT.mark(), ErrorMsg::END_OF_VERBATIM_TAG);
}
const std::string ScanTagHandle(Stream& INPUT, bool& canBeHandle)
{
std::string tag;
canBeHandle = true;
Mark firstNonWordChar;
while(INPUT) {
if(INPUT.peek() == Keys::Tag) {
if(!canBeHandle)
throw ParserException(firstNonWordChar, ErrorMsg::CHAR_IN_TAG_HANDLE);
break;
}
int n = 0;
if(canBeHandle) {
n = Exp::Word().Match(INPUT);
if(n <= 0) {
canBeHandle = false;
firstNonWordChar = INPUT.mark();
}
}
if(!canBeHandle)
n = Exp::Tag().Match(INPUT);
if(n <= 0)
break;
tag += INPUT.get(n);
}
return tag;
}
const std::string ScanTagSuffix(Stream& INPUT)
{
std::string tag;
while(INPUT) {
int n = Exp::Tag().Match(INPUT);
if(n <= 0)
break;
tag += INPUT.get(n);
}
if(tag.empty())
throw ParserException(INPUT.mark(), ErrorMsg::TAG_WITH_NO_SUFFIX);
return tag;
}
}
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