public function testWithersReturnNewModifiedInstance()
{
$value = 'bob';
$newValue = 'alice';
$type = new TokenType(TokenType::DYNAMIC_ARRAY_TYPE);
$token = new Token($value, $type);
$newToken = $token->withValue($newValue);
$this->assertEquals($value, $token->getValue());
$this->assertEquals($type->getValue(), $token->getType());
$this->assertInstanceOf(Token::class, $newToken);
$this->assertEquals($newValue, $newToken->getValue());
$this->assertEquals($type->getValue(), $newToken->getType());
}
public function __toString()
{
return sprintf('(%s) %s', $this->type->getValue(), $this->value);
}
/**
* @dataProvider provideAcceptableTypes
*/
public function testCanCreateType(string $typeConstant)
{
$type = new TokenType($typeConstant);
$this->assertEquals($type->getValue(), constant(sprintf('%s::%s', TokenType::class, $typeConstant)));
}
/**
* Evaluate the next expression
* @param string &$buffer The expression result value is written here
* @param Token $token An optional start from token
* @return int The Type ID of the expression result
*/
protected function evalExp(&$buffer, $token = NULL)
{
static $depth = -1;
$depth++;
$this->debug(__METHOD__, __LINE__, 'evalExp depth: ' . $depth);
$buffer = '';
// write to arg by reference
if (!$token) {
$token = $this->getToken();
}
if (!$token) {
throw new SyntaxException($this->getLine(), $this->getColumn(), 'Failed evaluating expression', __FILE__, __LINE__);
}
switch ($token->getType()) {
case TokenType::IDENTIFIER:
$this->debug(__METHOD__, __LINE__, "Evaluating IDENTIFIER token");
$varname = $token->getValue();
// If identifier not found in memory
if (!$this->memory->hasVar($varname)) {
throw new SyntaxException($token->getLine(), $token->getColumn(), "Undefined identifier: '{$varname}'", __FILE__, __LINE__);
}
$variable = $this->memory->getVar($varname);
$leftside = $variable->getValue();
$vartype = $variable->getType();
break;
case TokenType::MINVOKE:
$this->debug(__METHOD__, __LINE__, "Evaluating MINVOKE token");
$result = $this->procMethodInvoke($token);
$leftside = $result->getValue();
$vartype = $result->getType();
unset($result);
break;
case TokenType::INTEGER:
$this->debug(__METHOD__, __LINE__, "Evaluating INTEGER token");
$vartype = TokenType::INTEGER;
$leftside = $token->getValue();
break;
case TokenType::FLOAT:
$this->debug(__METHOD__, __LINE__, "Evaluating FLOAT token");
$vartype = TokenType::FLOAT;
$leftside = $token->getValue();
break;
case TokenType::STRING:
$this->debug(__METHOD__, __LINE__, "Evaluating STRING token");
$vartype = TokenType::STRING;
$leftside = $token->getValue();
break;
case TokenType::SYMBOL:
$this->debug(__METHOD__, __LINE__, "Evaluating SYMBOL token");
list($leftside, $vartype) = $this->procSymbol($token);
// $vartype = TokenType::SYMBOL;
if (!$leftside) {
die("O");
return;
}
break;
case TokenType::KEYWORD:
default:
throw new SyntaxException($token->getLine(), $token->getColumn(), 'Invalid expression: ' . $token->getValue(), __FILE__, __LINE__);
break;
}
$buffer = $leftside;
// assign it incase we exit ;)
$this->debug(__METHOD__, __LINE__, "Leftside_Value: {$buffer}");
// $this->debug(__METHOD__, __LINE__, "Leftside_Type: $vartype");
$this->debug(__METHOD__, __LINE__, "Leftside_TypeName: " . TokenType::map($vartype));
// Get the operator part of the expression
$token = $this->getToken();
switch ($token->getType()) {
case TokenType::SYMBOL:
switch ($token->getValue()) {
case ')':
$depth--;
$this->ungetCharacter();
return $vartype;
// hello
// hello
case ';':
$depth--;
// $this->ungetCharacter();
return $vartype;
// hello
break;
case ',':
return $vartype;
break;
case '+':
// also for string concat
// also for string concat
case '-':
case '*':
case '/':
case '%':
// math operators
break;
case '==':
case '!=':
case '<':
case '>':
case '>=':
case '<=':
// comparison operators
break;
case '&&':
case '||':
// logical
break;
case '&':
case '|':
// bitwise
break;
default:
throw new SyntaxException($token->getLine(), $token->getColumn(), 'Invalid operator: ' . $token->getValue(), __FILE__, __LINE__);
break;
}
break;
default:
throw new SyntaxException($token->getLine(), $token->getColumn(), 'Invalid symbol: ' . $token->getValue(), __FILE__, __LINE__);
break;
}
$operator = $token->getValue();
$this->debug(__METHOD__, __LINE__, 'Operator_Value: ' . $operator);
// $this->debug(__METHOD__, __LINE__, 'Operator_Type: ' . $token->getType());
$this->debug(__METHOD__, __LINE__, "Operator_TypeName: " . TokenType::map($token->getType()));
// Recursive call to evaluate the expression further
$rightside = '';
$vartype2 = $this->evalExp($rightside);
$this->debug(__METHOD__, __LINE__, 'Rightside_Value: ' . $rightside);
// $this->debug(__METHOD__, __LINE__, "Rightside_Type: $vartype2");
$this->debug(__METHOD__, __LINE__, "Rightside_TypeName: " . TokenType::map($vartype2));
switch ($vartype) {
case TokenType::FLOAT:
$n1 = floatval($leftside);
$n2 = floatval($rightside);
if ($operator == '+') {
$n3 = $n1 + $n2;
} elseif ($operator == '-') {
$n3 = $n1 - $n2;
} elseif ($operator == '*') {
$n3 = $n1 * $n2;
} elseif ($operator == '/') {
$n3 = $n1 / $n2;
} elseif ($operator == '==') {
$n3 = $n1 == $n2;
} elseif ($operator == '<') {
$n3 = $n1 < $n2;
} elseif ($operator == '>') {
$n3 = $n1 > $n2;
} elseif ($operator == '<=') {
$n3 = $n1 <= $n2;
} elseif ($operator == '>=') {
$n3 = $n1 >= $n2;
} elseif ($operator == '!=') {
$n3 = $n1 != $n2;
} else {
throw new SyntaxException($token->getLine(), $token->getColumn(), 'Illegal float operator: ' . $operator, __FILE__, __LINE__);
}
// set the output buffer
$buffer = floatval($n3);
break;
case TokenType::INTEGER:
$n1 = intval($leftside);
$n2 = intval($rightside);
if ($operator == '+') {
$n3 = $n1 + $n2;
} elseif ($operator == '-') {
$n3 = $n1 - $n2;
} elseif ($operator == '*') {
$n3 = $n1 * $n2;
} elseif ($operator == '/') {
$n3 = $n1 / $n2;
} elseif ($operator == '%') {
$n3 = $n1 % $n2;
} elseif ($operator == '==') {
$n3 = $n1 == $n2;
} elseif ($operator == '<') {
$n3 = $n1 < $n2;
} elseif ($operator == '>') {
$n3 = $n1 > $n2;
} elseif ($operator == '<=') {
$n3 = $n1 <= $n2;
} elseif ($operator == '>=') {
$n3 = $n1 >= $n2;
} elseif ($operator == '!=') {
$n3 = $n1 != $n2;
} elseif ($operator == '&&') {
$n3 = (int) ($n1 && $n2);
} elseif ($operator == '||') {
$n3 = (int) ($n1 || $n2);
} elseif ($operator == '&') {
$n3 = $n1 & $n2;
} elseif ($operator == '|') {
$n3 = $n1 | $n2;
} else {
throw new SyntaxException($token->getLine(), $token->getColumn(), 'Illegal numerical operator: ' . $operator, __FILE__, __LINE__);
}
// set the output buffer
$buffer = intval($n3);
break;
case TokenType::STRING:
$tmp = $rightside;
if ($operator == '+') {
$buffer .= $rightside;
} elseif ($operator == '==') {
$buffer = $buffer == $tmp ? '1' : '0';
} elseif ($operator == '<') {
$buffer = $buffer < $tmp ? '1' : '0';
} elseif ($operator == '>') {
$buffer = $buffer > $tmp ? '1' : '0';
} elseif ($operator == '!=') {
$buffer = $buffer != $tmp ? '1' : '0';
} elseif ($operator == '<=') {
$buffer = $buffer <= $tmp ? '1' : '0';
} elseif ($operator == '>=') {
$buffer = $buffer >= $tmp ? '1' : '0';
} elseif ($operator == '&&') {
$buffer = $buffer && $tmp ? '1' : '0';
} elseif ($operator == '||') {
$buffer = $buffer || $tmp ? '1' : '0';
} elseif ($operator == '&') {
$buffer = $buffer & $tmp ? '1' : '0';
} elseif ($operator == '|') {
$buffer = $buffer | $tmp ? '1' : '0';
} else {
throw new SyntaxException($token->getLine(), $token->getColumn(), 'Illegal string operator: ' . $operator, __FILE__, __LINE__);
}
break;
default:
throw new SyntaxException($token->getLine(), $token->getColumn(), 'Unexpected variable type: ' . TokenType::map($vartype), __FILE__, __LINE__);
break;
}
$this->debug(__METHOD__, __LINE__, "Expression: {$leftside} {$operator} {$rightside}");
$this->debug(__METHOD__, __LINE__, 'Result: ' . $buffer);
$this->debug(__METHOD__, __LINE__, 'Type: ' . TokenType::map($vartype));
$depth--;
return $vartype;
}