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/*
*/
package submit;
import submit.ast.VarType;
/**
* This class represents the result of generating MIPS code. There are various
* forms this result can take: 1) void, for cases where the calling node doesn't
* need any information returned, such as a return statement. 2) register, for
* cases where the called node needs to inform the calling node what register a
* result is placed in, such as BinaryOperator. 3) address, for cases where the
* returning result is in memory, such as StringConstant.
*
* To instantiate a MIPSResult object use the factory methods create...().
*
*/
public class MIPSResult {
private final String register;
private final String address;
private final VarType type;
public static MIPSResult createVoidResult() {
return new MIPSResult(null, null, null);
}
public static MIPSResult createRegisterResult(String register, VarType type) {
return new MIPSResult(register, null, type);
}
public static MIPSResult createAddressResult(String address, VarType type) {
return new MIPSResult(null, address, type);
}
private MIPSResult(String register, String address, VarType type) {
this.register = register;
this.address = address;
this.type = type;
}
/**
* Anytime you get a register from a result you should seriously consider
* calling regAllocator.clear(reg) after using the register to minimize
* register usage.
*
* @return
*/
public String getRegister() {
return register;
}
public String getAddress() {
return address;
}
public VarType getType() {
return type;
}
}
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