Instruction.java

package zinara.ast.instructions;

import zinara.ast.ASTNode;
import zinara.ast.expression.Expression;
import zinara.ast.instructions.Instruction;
import zinara.code_generator.Genx86;
import zinara.exceptions.InvalidCodeException;
import zinara.exceptions.TypeClashException;

import java.io.IOException;

public abstract class Instruction extends ASTNode {
    public String nextInst;
    public String break_label;
    public String continue_label;
    public abstract String toString();
    public abstract void tox86(Genx86 generate)
	throws InvalidCodeException,IOException;
    
    public void checkNoReturns(){};

    public void set_breaks_continues(CodeBlock code,
				     String break_label,
				     String continue_label){
	Instruction inst;

	for (int i = 0; i < code.getBlock().size(); i++) {
	    inst = (Instruction)code.getBlock().get(i);
	    
	    if ((inst instanceof Break)||
		(inst instanceof Continue)||
		(inst instanceof If)){
		inst.break_label = break_label;
		inst.continue_label = continue_label;
	    }
	}
    }
}