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