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Added parsing of anchors, aliases, and tags (still no semantics yet).

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Fixed a silly bug in the simple key pushing (queues are FIFO!).
This commit is contained in:
Jesse Beder 2008-07-01 01:17:10 +00:00
parent 121c2e577f
commit 8180a85a3b
10 changed files with 167 additions and 34 deletions
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75
node.cpp
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@ -9,7 +9,7 @@
namespace YAML
{
Node::Node(): m_pContent(0)
Node::Node(): m_pContent(0), m_alias(false)
{
}
@ -22,12 +22,19 @@ namespace YAML
{
delete m_pContent;
m_pContent = 0;
m_alias = false;
}
void Node::Parse(Scanner *pScanner)
{
Clear();
ParseHeader(pScanner);
// is this an alias? if so, it can have no content
if(m_alias)
return;
// now split based on what kind of node we should be
Token *pToken = pScanner->PeekNextToken();
if(pToken->type == TT_DOC_END)
@ -57,29 +64,75 @@ namespace YAML
{
while(1) {
Token *pToken = pScanner->PeekNextToken();
if(!pToken || pToken->type != TT_TAG || pToken->type != TT_ANCHOR || pToken->type != TT_ALIAS)
if(!pToken || (pToken->type != TT_TAG && pToken->type != TT_ANCHOR && pToken->type != TT_ALIAS))
break;
pScanner->PopNextToken();
switch(pToken->type) {
case TT_TAG:
break;
case TT_ANCHOR:
break;
case TT_ALIAS:
break;
case TT_TAG: ParseTag(pScanner); break;
case TT_ANCHOR: ParseAnchor(pScanner); break;
case TT_ALIAS: ParseAlias(pScanner); break;
}
delete pToken;
}
}
void Node::ParseTag(Scanner *pScanner)
{
if(m_tag != "")
return; // TODO: throw
Token *pToken = pScanner->PeekNextToken();
m_tag = pToken->value;
for(unsigned i=0;i<pToken->params.size();i++)
m_tag += pToken->params[i];
pScanner->PopNextToken();
}
void Node::ParseAnchor(Scanner *pScanner)
{
if(m_anchor != "")
return; // TODO: throw
Token *pToken = pScanner->PeekNextToken();
m_anchor = pToken->value;
m_alias = false;
pScanner->PopNextToken();
}
void Node::ParseAlias(Scanner *pScanner)
{
if(m_anchor != "")
return; // TODO: throw
if(m_tag != "")
return; // TODO: throw (aliases can't have any content, *including* tags)
Token *pToken = pScanner->PeekNextToken();
m_anchor = pToken->value;
m_alias = true;
pScanner->PopNextToken();
}
void Node::Write(std::ostream& out, int indent)
{
if(m_tag != "") {
for(int i=0;i<indent;i++)
out << " ";
out << "{tag: " << m_tag << "}\n";
}
if(m_anchor != "") {
for(int i=0;i<indent;i++)
out << " ";
if(m_alias)
out << "{alias: " << m_anchor << "}\n";
else
out << "{anchor: " << m_anchor << "}\n";
}
if(!m_pContent) {
for(int i=0;i<indent;i++)
out << " ";
out << "{no content}\n";
} else
} else {
m_pContent->Write(out, indent);
}
}
}