public function testOperatorsAreReturnedBySymbol()
{
$this->assertTrue($this->collection->exists($this->mockOperator));
$this->assertTrue($this->collection->exists($this->otherOperator));
$this->assertFalse($this->collection->exists($this->getMockBuilder('\\Minty\\Compiler\\Operator')->disableOriginalConstructor()->getMockForAbstractClass()));
$this->assertSame($this->mockOperator, $this->collection->getOperator('+'));
$this->assertSame($this->mockOperator, $this->collection->getOperator('-'));
$this->assertSame($this->otherOperator, $this->collection->getOperator('*'));
}
private function compareToStackTop(Operator $operator)
{
$top = $this->operatorStack->top();
if ($top === null) {
return false;
}
if ($this->binaryOperators->exists($operator) && $operator === $top) {
if ($operator->isAssociativity(Operator::LEFT)) {
return true;
}
if ($operator->isAssociativity(Operator::RIGHT)) {
return false;
}
//e.g. (5 is divisible by 2 is divisible by 3) is not considered valid
$symbols = $operator->operators();
if (is_array($symbols)) {
$symbols = implode(', ', $symbols);
}
throw new ParseException("Binary operator '{$symbols}' is not associative", $this->stream->current()->getLine());
}
return $top->getPrecedence() >= $operator->getPrecedence();
}
