public static boolean parse(StringBuffer pattern, GElementTMOperation gop) {
TMOperation op = gop.getOperation();
String s = pattern.toString();
if (s.startsWith(TMOperation.OPS_LEFT_UNTIL)) {
pattern.delete(0, 2);
gop.setLabel(TMOperation.OPS_LEFT_UNTIL + pattern.charAt(0));
op.setOperation(TMOperation.OP_LEFT_UNTIL);
op.setParameter(pattern.substring(0, 1));
pattern.deleteCharAt(0);
} else if (s.startsWith(TMOperation.OPS_LEFT_UNTIL_NOT)) {
pattern.delete(0, 2);
gop.setLabel(TMOperation.OPS_LEFT_UNTIL_NOT + pattern.charAt(0));
op.setOperation(TMOperation.OP_LEFT_UNTIL_NOT);
op.setParameter(pattern.substring(0, 1));
pattern.deleteCharAt(0);
} else if (s.startsWith(TMOperation.OPS_LEFT)) {
pattern.deleteCharAt(0);
gop.setLabel(TMOperation.OPS_LEFT);
op.setOperation(TMOperation.OP_LEFT);
} else if (s.startsWith(TMOperation.OPS_RIGHT_UNTIL)) {
pattern.delete(0, 2);
gop.setLabel(TMOperation.OPS_RIGHT_UNTIL + pattern.charAt(0));
op.setOperation(TMOperation.OP_RIGHT_UNTIL);
op.setParameter(pattern.substring(0, 1));
pattern.deleteCharAt(0);
} else if (s.startsWith(TMOperation.OPS_RIGHT_UNTIL_NOT)) {
pattern.delete(0, 2);
gop.setLabel(TMOperation.OPS_RIGHT_UNTIL_NOT + pattern.charAt(0));
op.setOperation(TMOperation.OP_RIGHT_UNTIL_NOT);
op.setParameter(pattern.substring(0, 1));
pattern.deleteCharAt(0);
} else if (s.startsWith(TMOperation.OPS_RIGHT)) {
pattern.deleteCharAt(0);
gop.setLabel(TMOperation.OPS_RIGHT);
op.setOperation(TMOperation.OP_RIGHT);
} else if (s.startsWith(TMOperation.OPS_OUTPUT)) {
gop.setLabel(TMOperation.OPS_OUTPUT);
op.setOperation(TMOperation.OP_OUTPUT);
pattern.deleteCharAt(0);
} else if (s.startsWith(TMOperation.OPS_YES)) {
gop.setLabel(TMOperation.OPS_YES);
op.setOperation(TMOperation.OP_YES);
pattern.deleteCharAt(0);
} else if (s.startsWith(TMOperation.OPS_NO)) {
gop.setLabel(TMOperation.OPS_NO);
op.setOperation(TMOperation.OP_NO);
pattern.deleteCharAt(0);
} else if (s.startsWith(TMOperation.OPS_CALL)) {
pattern.deleteCharAt(0); // consume M
pattern.deleteCharAt(0); // consume [
String machineName = pattern.substring(0, pattern.indexOf("]"));
pattern.delete(0, pattern.indexOf("]") + 1);
op.setOperation(TMOperation.OP_CALL);
op.setParameter(machineName);
gop.setLabel(TMOperation.OP_CALL + "[" + op.getParameter() + "]");
} else {
op.setOperation(TMOperation.OP_WRITE);
if (s.startsWith(TMMachine.SYMBOL_VAR)) {
op.setParameter(pattern.substring(0, 2));
pattern.delete(0, 2);
} else {
op.setParameter(pattern.substring(0, 1));
pattern.deleteCharAt(0);
}
gop.setLabel(op.getParameter());
}
return true;
}
public static GElementTMOperation parse(StringBuffer pattern) {
TMOperation op = new TMOperation();
GElementTMOperation gop = new GElementTMOperation();
gop.setOperation(op);
return parse(pattern, gop) ? gop : null;
}