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Finished parsing of basic data types (scalar, sequence, map).

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This commit is contained in:
Jesse Beder 2008-06-30 23:57:58 +00:00
parent c1966ba3fc
commit 121c2e577f
20 changed files with 434 additions and 221 deletions
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104
map.cpp
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@ -1,5 +1,7 @@
#include "map.h"
#include "node.h"
#include "scanner.h"
#include "token.h"
namespace YAML
{
@ -14,4 +16,106 @@ namespace YAML
delete it->second;
}
}
void Map::Parse(Scanner *pScanner)
{
// grab start token
Token *pToken = pScanner->GetNextToken();
switch(pToken->type) {
case TT_BLOCK_MAP_START: ParseBlock(pScanner); break;
case TT_FLOW_MAP_START: ParseFlow(pScanner); break;
}
delete pToken;
}
void Map::ParseBlock(Scanner *pScanner)
{
while(1) {
Token *pToken = pScanner->PeekNextToken();
if(!pToken)
break; // TODO: throw?
if(pToken->type != TT_KEY && pToken->type != TT_BLOCK_END)
break; // TODO: throw?
pScanner->PopNextToken();
if(pToken->type == TT_BLOCK_END)
break;
Node *pKey = new Node;
Node *pValue = new Node;
m_data[pKey] = pValue;
// grab key
pKey->Parse(pScanner);
// now grab value (optional)
if(pScanner->PeekNextToken() && pScanner->PeekNextToken()->type == TT_VALUE) {
pScanner->PopNextToken();
pValue->Parse(pScanner);
}
}
}
void Map::ParseFlow(Scanner *pScanner)
{
while(1) {
Token *pToken = pScanner->PeekNextToken();
if(!pToken)
break; // TODO: throw?
// first check for end
if(pToken->type == TT_FLOW_MAP_END) {
pScanner->EatNextToken();
break;
}
// now it better be a key
if(pToken->type != TT_KEY)
break; // TODO: throw?
pScanner->PopNextToken();
Node *pKey = new Node;
Node *pValue = new Node;
m_data[pKey] = pValue;
// grab key
pKey->Parse(pScanner);
// now grab value (optional)
if(pScanner->PeekNextToken() && pScanner->PeekNextToken()->type == TT_VALUE) {
pScanner->PopNextToken();
pValue->Parse(pScanner);
}
// now eat the separator (or could be a map end, which we ignore - but if it's neither, then it's a bad node)
pToken = pScanner->PeekNextToken();
if(pToken->type == TT_FLOW_ENTRY)
pScanner->EatNextToken();
else if(pToken->type != TT_FLOW_MAP_END)
break; // TODO: throw?
}
}
void Map::Write(std::ostream& out, int indent)
{
for(int i=0;i<indent;i++)
out << " ";
out << "{map}\n";
for(node_map::const_iterator it=m_data.begin();it!=m_data.end();++it) {
for(int i=0;i<indent + 1;i++)
out << " ";
out << "{key}\n";
it->first->Write(out, indent + 2);
for(int i=0;i<indent + 1;i++)
out << " ";
out << "{value}\n";
it->second->Write(out, indent + 2);
}
}
}