Refactored type parsing.

include/plasp/pddl/Context.h

@@ -0,0 +1,27 @@
+#ifndef __PLASP__PDDL__CONTEXT_H
+#define __PLASP__PDDL__CONTEXT_H
+
+#include <plasp/pddl/Type.h>
+
+namespace plasp
+{
+namespace pddl
+{
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+//
+// Context
+//
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
+struct Context
+{
+	TypeHashMap types;
+};
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
+}
+}
+
+#endif

include/plasp/pddl/Description.h

@@ -32,6 +32,7 @@ class Description
 		void parseContent(utils::Parser &parser);
 		void parseSection(utils::Parser &parser);
 
+		Context m_context;
 		std::unique_ptr<Domain> m_domain;
 		//std::unique_ptr<Problem> m_problem;
 };

include/plasp/pddl/Domain.h

@@ -3,6 +3,7 @@
 
 #include <unordered_map>
 
+#include <plasp/pddl/Context.h>
 #include <plasp/pddl/Requirement.h>
 #include <plasp/pddl/Type.h>
 #include <plasp/utils/Parser.h>
@@ -21,17 +22,15 @@ namespace pddl
 class Domain
 {
 	public:
-		static Domain fromPDDL(utils::Parser &parser);
-
-		using TypesHashMap = std::unordered_map<std::string, Type>;
+		static Domain fromPDDL(utils::Parser &parser, Context &context);
 
 	public:
 		const std::string &name() const;
 		const Requirement::Types &requirements() const;
-		const TypesHashMap &types() const;
+		const TypeHashMap &types() const;
 
 	private:
-		Domain() = default;
+		Domain(Context &context);
 
 		void parseSection(utils::Parser &parser);
 
@@ -43,9 +42,10 @@ class Domain
 
 		void checkConsistency();
 
+		Context &m_context;
+
 		std::string m_name;
 		Requirement::Types m_requirements;
-		TypesHashMap m_types;
 };
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////

include/plasp/pddl/Type.h

@@ -3,6 +3,7 @@
 
 #include <functional>
 #include <string>
+#include <unordered_map>
 #include <vector>
 
 #include <plasp/utils/Parser.h>
@@ -18,21 +19,30 @@ namespace pddl
 //
 ////////////////////////////////////////////////////////////////////////////////////////////////////
 
+class Context;
+
+class Type;
+using TypeHashMap = std::unordered_map<std::string, Type>;
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
 class Type
 {
 	public:
-		Type(std::string name);
+		static void parsePDDL(utils::Parser &parser, Context &context);
 
 	public:
-		void setDirty(bool isDirty = true);
-		bool isDirty() const;
-
 		const std::string &name() const;
-
-		void addParentType(const Type &parentType);
 		const std::vector<const Type *> &parentTypes() const;
 
 	private:
+		Type(std::string name);
+
+		void setDirty(bool isDirty = true);
+		bool isDirty() const;
+
+		void addParentType(const Type &parentType);
+
 		bool m_isDirty;
 
 		std::string m_name;

src/plasp/pddl/Description.cpp

@@ -81,7 +81,7 @@ void Description::parseSection(utils::Parser &parser)
 	std::cout << "Parsing section " << sectionIdentifier << std::endl;
 
 	if (sectionIdentifier == "domain")
-		m_domain = std::make_unique<Domain>(Domain::fromPDDL(parser));
+		m_domain = std::make_unique<Domain>(Domain::fromPDDL(parser, m_context));
 	//else if (sectionIdentifier == "problem")
 	//	m_problem = std::make_unique<Problem>(Problem::fromPDDL(parser));
 	else

src/plasp/pddl/Domain.cpp

@@ -17,9 +17,16 @@ namespace pddl
 //
 ////////////////////////////////////////////////////////////////////////////////////////////////////
 
-Domain Domain::fromPDDL(utils::Parser &parser)
+Domain::Domain(Context &context)
+:	m_context(context)
 {
-	Domain domain;
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
+Domain Domain::fromPDDL(utils::Parser &parser, Context &context)
+{
+	Domain domain(context);
 
 	domain.m_name = parser.parseIdentifier(isIdentifier);
 
@@ -60,9 +67,9 @@ const Requirement::Types &Domain::requirements() const
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
 
-const Domain::TypesHashMap &Domain::types() const
+const TypeHashMap &Domain::types() const
 {
-	return m_types;
+	return m_context.types;
 }
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
@@ -193,48 +200,12 @@ void Domain::computeDerivedRequirements()
 
 void Domain::parseTypingSection(utils::Parser &parser)
 {
-	// Parses a single type identifier
-	const auto parseType =
-		[&]() -> auto &
-		{
-			parser.skipWhiteSpace();
-
-			const auto typeName = parser.parseIdentifier(isIdentifier);
-			const auto insertionResult = m_types.emplace(std::make_pair(typeName, Type(typeName)));
-			auto &type = insertionResult.first->second;
-
-			// Flag type for potentially upcoming parent type declaration
-			type.setDirty();
-
-			parser.skipWhiteSpace();
-
-			return type;
-		};
-
 	// Parses a type and potentially its parent type
 	while (parser.currentCharacter() != ')')
 	{
-		parseType();
+		Type::parsePDDL(parser, m_context);
 
-		// Check for type inheritance
-		if (!parser.advanceIf('-'))
-			continue;
-
-		// If existing, parse parent type
-		auto &parentType = parseType();
-
-		parentType.setDirty(false);
-
-		// Assign parent type to all types that were previously flagged
-		std::for_each(m_types.begin(), m_types.end(),
-			[&](auto &childType)
-			{
-				if (!childType.second.isDirty())
-					return;
-
-				childType.second.addParentType(parentType);
-				childType.second.setDirty(false);
-			});
+		parser.skipWhiteSpace();
 	}
 
 	parser.expect<std::string>(")");
@@ -244,7 +215,7 @@ void Domain::parseTypingSection(utils::Parser &parser)
 
 void Domain::checkConsistency()
 {
-	if (!m_types.empty() && !hasRequirement(Requirement::Type::Typing))
+	if (!m_context.types.empty() && !hasRequirement(Requirement::Type::Typing))
 	{
 		throw ConsistencyException("Domain contains typing information but does not declare typing requirement");
 

src/plasp/pddl/Type.cpp

@@ -1,5 +1,10 @@
 #include <plasp/pddl/Type.h>
 
+#include <algorithm>
+
+#include <plasp/pddl/Context.h>
+#include <plasp/pddl/Identifier.h>
+
 namespace plasp
 {
 namespace pddl
@@ -13,12 +18,69 @@ namespace pddl
 
 Type::Type(std::string name)
 :	m_isDirty{false},
-	m_name{name}
+	m_name(name)
 {
 }
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
 
+void Type::parsePDDL(utils::Parser &parser, Context &context)
+{
+	// Parses a single type identifier
+	const auto parseType =
+		[&]() -> auto &
+		{
+			parser.skipWhiteSpace();
+
+			const auto typeName = parser.parseIdentifier(isIdentifier);
+			const auto match = context.types.find(typeName);
+			const auto typeExists = (match != context.types.cend());
+
+			if (typeExists)
+			{
+				auto &type = match->second;
+
+				type.setDirty();
+
+				return type;
+			}
+
+			const auto insertionResult = context.types.emplace(std::make_pair(typeName, Type(typeName)));
+			auto &type = insertionResult.first->second;
+
+			// Flag type for potentially upcoming parent type declaration
+			type.setDirty();
+
+			return type;
+		};
+
+	parseType();
+
+	parser.skipWhiteSpace();
+
+	// Check for type inheritance
+	if (!parser.advanceIf('-'))
+		return;
+
+	// If existing, parse parent type
+	auto &parentType = parseType();
+
+	parentType.setDirty(false);
+
+	// Assign parent type to all types that were previously flagged
+	std::for_each(context.types.begin(), context.types.end(),
+		[&](auto &childType)
+		{
+			if (!childType.second.isDirty())
+				return;
+
+			childType.second.addParentType(parentType);
+			childType.second.setDirty(false);
+		});
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
 void Type::setDirty(bool isDirty)
 {
 	m_isDirty = isDirty;