Retro68/Rez/ResourceDefinitions.h

#ifndef RESOURCEDEFINITIONS_H
#define RESOURCEDEFINITIONS_H

#include <iosfwd>
#include <memory>
#include <map>

#include "Expression.h"
#include "ResType.h"


class TypeSpec
{
	ResType type;
	int id;
public:
	static const int noID = 65536;

	TypeSpec() : id(noID) {}
	TypeSpec(ResType type) : type(type), id(noID) {}
	TypeSpec(ResType type, int id) : type(type), id(id) {}

	ResType getType() const { return type; }
	int getID() const { return id; }

	bool hasID() const { return id != noID; }

	bool operator<(TypeSpec y) const
	{
		if(type < y.type)
			return true;
		else if(y.type < type)
			return false;
		else
			return id < y.id;
	}
};

std::ostream& operator<<(std::ostream& out, TypeSpec ts);


class ResourceCompiler;

class Field
{
public:
	virtual bool needsValue() { return true; }

	virtual void compile(ExprPtr expr, ResourceCompiler *compiler, bool prePass) = 0;

	virtual ExprPtr lookupNamedValue(std::string) { return nullptr; }
};
typedef std::shared_ptr<Field> FieldPtr;

class SimpleField : public Field
{
public:
	enum class Type
	{
		boolean, byte, integer, longint, rect, point, char_,
		pstring, wstring, string, bitstring
	};

	enum class Attrs
	{
		none = 0, hex = 1, key = 2, unsigned_ = 4, literal = 8
	};

	Type type;
	Attrs attrs = Attrs::none;
	ExprPtr arrayCount;

	ExprPtr	value;
	std::map<std::string, ExprPtr> namedValues;
	ExprPtr lastNamedValue;

	void addNamedValue(std::string n);
	void addNamedValue(std::string n, ExprPtr val);
	ExprPtr lookupNamedValue(std::string);

	virtual bool needsValue();
	virtual void compile(ExprPtr expr, ResourceCompiler *compiler, bool prePass);

private:
	void compileString(ExprPtr expr, ResourceCompiler *compiler, bool prePass);
	void compileInt(ExprPtr expr, ResourceCompiler *compiler, bool prePass);
	void compileCompound(ExprPtr expr, ResourceCompiler *compiler, bool prePass);
};
typedef std::shared_ptr<SimpleField> SimpleFieldPtr;

class FillAlignField : public Field
{
public:
	enum class Type
	{
		bit, nibble, byte, word, long_
	};

	FillAlignField(Type type, bool isAlign, ExprPtr count = ExprPtr());
	virtual bool needsValue();
	virtual void compile(ExprPtr expr, ResourceCompiler *compiler, bool prePass);
private:
	Type type;
	ExprPtr count;
	bool isAlign;
};

inline SimpleField::Attrs operator|(SimpleField::Attrs a, SimpleField::Attrs b)
{
	return SimpleField::Attrs( int(a) | int(b) );
}


class LabelField : public Field
{
	std::string name;
public:
	LabelField(std::string name);

	virtual bool needsValue();
	virtual void compile(ExprPtr expr, ResourceCompiler *compiler, bool prePass);
};
typedef std::shared_ptr<LabelField> LabelFieldPtr;


class FieldList : public Field
{
protected:
	std::vector<FieldPtr> fields;
public:
	virtual ~FieldList();
	void addField(FieldPtr field);
	void addLabel(std::string name);

	virtual void compile(ExprPtr expr, ResourceCompiler *compiler, bool prePass);
};
typedef std::shared_ptr<FieldList> FieldListPtr;


class ArrayField : public FieldList
{
	std::string name;
	ExprPtr arrayCount;
public:
	ArrayField(std::string name /* or empty */, ExprPtr count /* may be null*/);

	virtual void compile(ExprPtr expr, ResourceCompiler *compiler, bool prePass);
};
typedef std::shared_ptr<ArrayField> ArrayFieldPtr;

class SwitchField : public Field
{
	std::map<std::string, FieldListPtr> cases;
public:
	void addCase(const std::string name, FieldListPtr alternative);

	virtual void compile(ExprPtr expr, ResourceCompiler *compiler, bool prePass);
};
typedef std::shared_ptr<SwitchField> SwitchFieldPtr;

class TypeDefinition : public FieldList
{
};
typedef std::shared_ptr<TypeDefinition> TypeDefinitionPtr;

#endif // RESOURCEDEFINITIONS_H