Method isStringArg

ij/src/main/java/ij/macro/Functions.java:2971–2985

()

	}

	boolean isStringArg() {
		int nextToken = pgm.code[interp.pc+1];
		int tok = nextToken&0xff;
		if (tok==STRING_CONSTANT||tok==STRING_FUNCTION) return true;
		if (tok==VARIABLE_FUNCTION && interp.isString(interp.pc+1)) return true;
		if (tok!=WORD) return false;
		Variable v = interp.lookupVariable(nextToken>>TOK_SHIFT);
		if (v==null) return false;
		int type = v.getType();
		if (type!=Variable.ARRAY)
			return v.getType()==Variable.STRING;
		Variable[] array = v.getArray();
		if (array.length==0 || interp.nextNextToken()=='.') return false;
		return array[0].getType()==Variable.STRING;
	}

	void exit() {
		String msg = null;