package slangc.api;

import slangc.bytecode.TypeSignature;

public class TypeOption {
	/** Note the first 16 must match up to BytecodeInstructionWriter.StackType. */
	public static enum Kind {
		/* #0-#3 are used for special types (these are not valid in all scenarios). */
		UNINITIALISED,
		INVALID,
		DUCK,
		VOID,
		/* #4 is the object type. */
		OBJECT,
		/* #5-#7 are the basic non-integer primitives. */
		BIT,
		FLOAT32,
		FLOAT64,
		
		/* #8-#15 are the basic integer primitives. */
		INT8,
		INT16,
		INT32,
		INT64,
		UINT8,
		UINT16,
		UINT32,
		UINT64,
		
		/* #16-#31 are the other standard runtime types. */
		MAGIC,
		TYPE,
		STRING,
		ENUMBASE,
		ARRAYBASE,
		INSTANCECONSTRUCTOR,
		STATICCONSTRUCTOR,
		INSTANCEFIELD,
		INSTANCEMETHOD,
		STATICFIELD,
		STATICMETHOD,
		INTERFACEMETHOD,
		BYTECODEFILE,
		LOADER,
		THREAD,
		DEVICEHANDLE
	}
	
	public final Kind kind;
	public final String typeName;
	public final String formatopt;
	
	public final boolean isBuiltin;
	public final boolean isDuck;
	public final boolean isNumber;
	public final boolean isFloat;
	public final boolean isSigned;
	public final int nbits;
	
	public TypeSignature getTypeSignature() {
		if (kind == Kind.VOID) {
			return TypeSignature.VOID;
		} else {
			return new TypeSignature(CompilerWorld.pkgname(typeName), CompilerWorld.typname(typeName));
		}
	}
	
	public TypeOption(Kind kind, String value, String formatopt) {
		super();
		this.kind = kind;
		this.typeName = value;
		this.formatopt = formatopt;
		this.isBuiltin = false;
		this.isDuck = false;
		this.isNumber = false;
		this.isFloat = false;
		this.isSigned = false;
		this.nbits = -1;
	}

	public TypeOption(Kind kind, String value, String formatopt, boolean isBuiltin, boolean isDuck, boolean isNumber, boolean isFloat, boolean isSigned, int nbits) {
		this.kind = kind;
		this.typeName = value;
		this.formatopt = formatopt;
		this.isBuiltin = isBuiltin;
		this.isDuck = isDuck;
		this.isNumber = isNumber;
		this.isFloat = isFloat;
		this.isSigned = isSigned;
		this.nbits = -1;
	}

}