private void guarded_command() {
System.out.print("(");
expr();
System.out.print(" <= 0");
mustbe(TK.THEN);
System.out.print(")");
addBlock();
System.out.println("{");
block();
System.out.println("}");
removeBlock();
}
private void forl_statement() {
System.out.print("for (");
scan();
System.out.print("int i = 0; i<=" + tok.string + "; i ++)");
addBlock();
System.out.print("{");
scan();
block();
mustbe(TK.ENDFORL);
System.out.println("}");
removeBlock();
}
private void If_statement() {
System.out.print("if");
mustbe(TK.IF);
guarded_command();
while (is(TK.ELSEIF)) {
System.out.print("else if");
scan();
guarded_command();
}
if (tok.kind == TK.ELSE) {
System.out.print("else");
scan();
addBlock();
System.out.println("{");
block();
System.out.println("}");
removeBlock();
}
mustbe(TK.ENDIF);
}