/**
* Add appropriate CodeFragement which will be translated to machine instruction to the fragments
* in codegen *
*/
public void emitCode() {
if (value.length() > 255) {
System.err.println("CODEGEN PROBLEM: TEXT CONSTANT BEYOND RECOMMENDED LIMIT of 255");
}
for (int g = this.value.length() - 1; g >= 0; g--) {
CodeGen.addCodeFragment("INSTRUCTION", (short) value.charAt(g), null, "PUSH");
}
}
@Override
public void codeGen(CodeGen codeGen) {
LabelInstruction falseLabel = new LabelInstruction("FalseBranchLabel");
LabelInstruction endLabel = new LabelInstruction("EndIfLabel");
condition.codeGen(codeGen);
Instruction pushInstr = new PushLabelInstruction(falseLabel.getName());
codeGen.generateCode(pushInstr);
Instruction bfInstruction = new Instruction(Machine.BF, "BF");
codeGen.generateCode(bfInstruction);
ListIterator<Stmt> trueStatements = this.whenTrue.listIterator();
ListIterator<Stmt> falseStatements = this.whenFalse.listIterator();
while (trueStatements.hasNext()) {
Stmt statement = trueStatements.next();
statement.codeGen(codeGen);
}
Instruction pushInstr2 = new PushLabelInstruction(endLabel.getName());
codeGen.generateCode(pushInstr2);
Instruction brInstr = new Instruction(Machine.BR, "BR");
codeGen.generateCode(brInstr);
codeGen.generateCode(falseLabel);
while (falseStatements.hasNext()) {
Stmt statement = falseStatements.next();
statement.codeGen(codeGen);
}
codeGen.generateCode(endLabel);
}