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Merged aliases branch into trunk, changes r100:150

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This commit is contained in:
Jesse Beder
2009-05-22 21:48:05 +00:00
parent 9d0e0c6a48
commit b3a5a519f2
13 changed files with 308 additions and 18 deletions
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70
src/node.cpp
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@@ -7,7 +7,9 @@
#include "scalar.h"
#include "sequence.h"
#include "map.h"
#include "alias.h"
#include "iterpriv.h"
#include <iostream>
namespace YAML
{
@@ -17,7 +19,7 @@ namespace YAML
return *pNode1 < *pNode2;
}
Node::Node(): m_pContent(0), m_alias(false)
Node::Node(): m_pContent(0), m_alias(false), m_pIdentity(this), m_referenced(true)
{
}
@@ -31,6 +33,9 @@ namespace YAML
delete m_pContent;
m_pContent = 0;
m_alias = false;
m_referenced = false;
m_anchor.clear();
m_tag.clear();
}
void Node::Parse(Scanner *pScanner, const ParserState& state)
@@ -47,30 +52,50 @@ namespace YAML
ParseHeader(pScanner, state);
// is this an alias? if so, it can have no content
if(m_alias)
// is this an alias? if so, its contents are an alias to
// a previously defined anchor
if(m_alias) {
// the scanner throws an exception if it doesn't know this anchor name
const Node *pReferencedNode = pScanner->Retrieve(m_anchor);
m_pIdentity = pReferencedNode;
// mark the referenced node for the sake of the client code
pReferencedNode->m_referenced = true;
// use of an Alias object keeps the referenced content from
// being deleted twice
Content *pAliasedContent = pReferencedNode->m_pContent;
if(pAliasedContent)
m_pContent = new Alias(pAliasedContent);
return;
}
// now split based on what kind of node we should be
switch(pScanner->peek().type) {
case TT_SCALAR:
m_pContent = new Scalar;
m_pContent->Parse(pScanner, state);
break;
case TT_FLOW_SEQ_START:
case TT_BLOCK_SEQ_START:
case TT_BLOCK_ENTRY:
m_pContent = new Sequence;
m_pContent->Parse(pScanner, state);
break;
case TT_FLOW_MAP_START:
case TT_BLOCK_MAP_START:
m_pContent = new Map;
m_pContent->Parse(pScanner, state);
break;
default:
break;
}
// Have to save anchor before parsing to allow for aliases as
// contained node (recursive structure)
if(!m_anchor.empty())
pScanner->Save(m_anchor, this);
if(m_pContent)
m_pContent->Parse(pScanner, state);
}
// ParseHeader
@@ -129,33 +154,46 @@ namespace YAML
void Node::Write(std::ostream& out, int indent, bool startedLine, bool onlyOneCharOnLine) const
{
// If using an anchor or tag for the whole document, document start
// must be explicit
bool indicateDocStart = (indent == 0);
// write anchor/alias
if(m_anchor != "") {
if (indicateDocStart) {
out << "--- ";
indicateDocStart = false;
}
if(m_alias)
out << std::string("*");
out << "*";
else
out << std::string("&");
out << m_anchor << std::string(" ");
out << "&";
out << m_anchor << " ";
startedLine = true;
onlyOneCharOnLine = false;
}
// write tag
if(m_tag != "") {
if (indicateDocStart) {
out << "--- ";
indicateDocStart = false;
}
// put the tag in the "proper" brackets
if(m_tag.substr(0, 2) == "!<" && m_tag.substr(m_tag.size() - 1) == ">")
out << m_tag;
if(m_tag.substr(0, 2) == std::string("!<") && m_tag.substr(m_tag.size() - 1) == std::string(">"))
out << m_tag << " ";
else
out << std::string("!<") << m_tag << std::string("> ");
out << "!<" << m_tag << "> ";
startedLine = true;
onlyOneCharOnLine = false;
}
if(!m_pContent) {
out << std::string("\n");
} else {
if(!m_pContent)
out << "\n";
else
m_pContent->Write(out, indent, startedLine, onlyOneCharOnLine);
}
}
CONTENT_TYPE Node::GetType() const