Merged r366:387 from the jbeder-event-api branch

include/aliasmanager.h

@@ -0,0 +1,38 @@
+#pragma once
+
+#ifndef ALIASMANAGER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define ALIASMANAGER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#include "anchor.h"
+#include <map>
+
+namespace YAML
+{
+	class Node;
+	
+	class AliasManager
+	{
+	public:
+		AliasManager();
+		
+		void RegisterReference(const Node& node);
+		
+		const Node *LookupReference(const Node& node) const;
+		anchor_t LookupAnchor(const Node& node) const;
+		
+	private:
+		const Node *_LookupReference(const Node& oldIdentity) const;
+		anchor_t _CreateNewAnchor();
+		
+	private:
+		typedef std::map<const Node*, const Node*> NodeByNode;
+		NodeByNode m_newIdentityByOldIdentity;
+		
+		typedef std::map<const Node*, anchor_t> AnchorByIdentity;
+		AnchorByIdentity m_anchorByIdentity;
+		
+		anchor_t m_curAnchor;
+	};
+}
+
+#endif // ALIASMANAGER_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/anchor.h

@@ -0,0 +1,14 @@
+#pragma once
+
+#ifndef ANCHOR_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define ANCHOR_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#include <cstddef>
+
+namespace YAML
+{
+	typedef std::size_t anchor_t;
+	const anchor_t NullAnchor = 0;
+}
+
+#endif // ANCHOR_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/emitfromevents.h

@@ -0,0 +1,43 @@
+#pragma once
+
+#ifndef EMITFROMEVENTS_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define EMITFROMEVENTS_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#include "eventhandler.h"
+#include <stack>
+
+namespace YAML
+{
+	class Emitter;
+	
+	class EmitFromEvents: public EventHandler
+	{
+	public:
+		EmitFromEvents(Emitter& emitter);
+		
+		virtual void OnDocumentStart(const Mark& mark);
+		virtual void OnDocumentEnd();
+		
+		virtual void OnNull(const std::string& tag, anchor_t anchor);
+		virtual void OnAlias(const Mark& mark, anchor_t anchor);
+		virtual void OnScalar(const Mark& mark, const std::string& tag, anchor_t anchor, const std::string& value);
+		
+		virtual void OnSequenceStart(const Mark& mark, const std::string& tag, anchor_t anchor);
+		virtual void OnSequenceEnd();
+		
+		virtual void OnMapStart(const Mark& mark, const std::string& tag, anchor_t anchor);
+		virtual void OnMapEnd();
+		
+	private:
+		void BeginNode();
+		void EmitProps(const std::string& tag, anchor_t anchor);
+		
+	private:
+		Emitter& m_emitter;
+		
+		struct State { enum value { WaitingForSequenceEntry, WaitingForKey, WaitingForValue }; };
+		std::stack<State::value> m_stateStack;
+	};
+}
+
+#endif // EMITFROMEVENTS_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/eventhandler.h

@@ -0,0 +1,34 @@
+#pragma once
+
+#ifndef EVENTHANDLER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define EVENTHANDLER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#include "anchor.h"
+#include <string>
+
+namespace YAML
+{
+	struct Mark;
+	
+	class EventHandler
+	{
+	public:
+		virtual ~EventHandler() {}
+
+		virtual void OnDocumentStart(const Mark& mark) = 0;
+		virtual void OnDocumentEnd() = 0;
+		
+		virtual void OnNull(const std::string& tag, anchor_t anchor) = 0;
+		virtual void OnAlias(const Mark& mark, anchor_t anchor) = 0;
+		virtual void OnScalar(const Mark& mark, const std::string& tag, anchor_t anchor, const std::string& value) = 0;
+
+		virtual void OnSequenceStart(const Mark& mark, const std::string& tag, anchor_t anchor) = 0;
+		virtual void OnSequenceEnd() = 0;
+
+		virtual void OnMapStart(const Mark& mark, const std::string& tag, anchor_t anchor) = 0;
+		virtual void OnMapEnd() = 0;
+	};
+}
+
+#endif // EVENTHANDLER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+

include/node.h

@@ -17,10 +17,12 @@
 
 namespace YAML
 {
+	class AliasManager;
 	class Content;
 	class Scanner;
 	class Emitter;
-	struct ParserState;
+	class EventHandler;
+	struct NodeProperties;
 
 	enum CONTENT_TYPE { CT_NONE, CT_SCALAR, CT_SEQUENCE, CT_MAP };
 
@@ -32,9 +34,18 @@ namespace YAML
 
 		void Clear();
 		std::auto_ptr<Node> Clone() const;
-		void Parse(Scanner *pScanner, ParserState& state);
+		void EmitEvents(EventHandler& eventHandler) const;
+		void EmitEvents(AliasManager& am, EventHandler& eventHandler) const;
 
-		CONTENT_TYPE GetType() const;
+		void Init(CONTENT_TYPE type, const Mark& mark, const std::string& tag);
+		void InitNull(const std::string& tag);
+		void InitAlias(const Mark& mark, const Node& identity);
+		
+		void SetData(const std::string& data);
+		void Append(std::auto_ptr<Node> pNode);
+		void Insert(std::auto_ptr<Node> pKey, std::auto_ptr<Node> pValue);
+
+		CONTENT_TYPE GetType() const { return m_type; }
 
 		// file location of start of this node
 		const Mark GetMark() const { return m_mark; }
@@ -97,19 +108,11 @@ namespace YAML
 
 		template <typename T>
 		const Node *FindValueForKey(const T& key) const;
-		
-		// helper for cloning
-		Node(const Mark& mark, const std::string& anchor, const std::string& tag, const Content *pContent);
-
-		// helpers for parsing
-		void ParseHeader(Scanner *pScanner, ParserState& state);
-		void ParseTag(Scanner *pScanner, ParserState& state);
-		void ParseAnchor(Scanner *pScanner, ParserState& state);
-		void ParseAlias(Scanner *pScanner, ParserState& state);
 
 	private:
 		Mark m_mark;
-		std::string m_anchor, m_tag;
+		std::string m_tag;
+		CONTENT_TYPE m_type;
 		Content *m_pContent;
 		bool m_alias;
 		const Node *m_pIdentity;

include/nodeproperties.h

@@ -0,0 +1,14 @@
+#pragma once
+
+#ifndef NODEPROPERTIES_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define NODEPROPERTIES_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+namespace YAML
+{
+	struct NodeProperties {
+		std::string tag;
+		std::string anchor;
+	};
+}
+
+#endif // NODEPROPERTIES_H_62B23520_7C8E_11DE_8A39_0800200C9A66

include/parser.h

@@ -4,19 +4,18 @@
 #define PARSER_H_62B23520_7C8E_11DE_8A39_0800200C9A66
 
 
-#include "node.h"
 #include "noncopyable.h"
 #include <ios>
-#include <string>
-#include <vector>
-#include <map>
 #include <memory>
 
 namespace YAML
 {
-	class Scanner;
-	struct ParserState;
+	struct Directives;
+	struct Mark;
 	struct Token;
+	class EventHandler;
+	class Node;
+	class Scanner;
 
 	class Parser: private noncopyable
 	{
@@ -28,6 +27,8 @@ namespace YAML
 		operator bool() const;
 
 		void Load(std::istream& in);
+		bool HandleNextDocument(EventHandler& eventHandler);
+		
 		bool GetNextDocument(Node& document);
 		void PrintTokens(std::ostream& out);
 
@@ -36,10 +37,10 @@ namespace YAML
 		void HandleDirective(const Token& token);
 		void HandleYamlDirective(const Token& token);
 		void HandleTagDirective(const Token& token);
-
+		
 	private:
 		std::auto_ptr<Scanner> m_pScanner;
-		std::auto_ptr<ParserState> m_pState;
+		std::auto_ptr<Directives> m_pDirectives;
 	};
 }