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Moved the input stream, together with line/column info, into its own class, which allowed some other stuff just to pass the stream, and not have to be a member of Scanner.

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Jesse Beder 2008-06-29 06:32:13 +00:00
parent 0d5a97bffe
commit ff99f85a6d
13 changed files with 162 additions and 142 deletions
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21
exp.cpp
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@ -34,13 +34,12 @@ namespace YAML
// Escape
// . Translates the next 'codeLength' characters into a hex number and returns the result.
// . Throws if it's not actually hex.
std::string Escape(std::istream& in, int& length, int codeLength)
std::string Escape(Stream& in, int codeLength)
{
// grab string
length += codeLength;
std::string str;
for(int i=0;i<codeLength;i++)
str += in.get();
str += in.GetChar();
// get the value
unsigned value = ParseHex(str);
@ -64,18 +63,14 @@ namespace YAML
// Escape
// . Escapes the sequence starting 'in' (it must begin with a '\' or single quote)
// and returns the result.
// . Fills 'length' with how many characters we ate.
// . Throws if it's an unknown escape character.
std::string Escape(std::istream& in, int& length)
std::string Escape(Stream& in)
{
// slash + character
length = 2;
// eat slash
char escape = in.get();
char escape = in.GetChar();
// switch on escape character
char ch = in.get();
char ch = in.GetChar();
// first do single quote, since it's easier
if(escape == '\'' && ch == '\'')
@ -101,9 +96,9 @@ namespace YAML
case '_': return "\xC2\xA0"; // #xA0
case 'L': return "\xE2\x80\xA8"; // LS (#x2028)
case 'P': return "\xE2\x80\xA9"; // PS (#x2029)
case 'x': return Escape(in, length, 2);
case 'u': return Escape(in, length, 4);
case 'U': return Escape(in, length, 8);
case 'x': return Escape(in, 2);
case 'u': return Escape(in, 4);
case 'U': return Escape(in, 8);
}
throw UnknownEscapeSequence(ch);