/**
* Tests ExpType::coerce
*/
public function testCoerce()
{
// coerce number
$this->assertEquals($this->tokens['int'], ExpType::coerceToNumber($this->tokens['int']));
$this->assertEquals($this->tokens['float'], ExpType::coerceToNumber($this->tokens['float']));
$this->assertEquals(new Token(ExpType::$INT, 2), ExpType::coerceToNumber(new Token(ExpType::$RAW, '2')));
$this->assertEquals(new Token(ExpType::$INT, 2), ExpType::coerceToNumber(new Token(ExpType::$STRING, '2')));
$this->assertEquals(new Token(ExpType::$INT, 1), ExpType::coerceToNumber(new Token(ExpType::$BOOL, true)));
$this->assertEquals(new Token(ExpType::$INT, 0), ExpType::coerceToNumber(new Token(ExpType::$BOOL, false)));
$this->assertEquals(new Token(ExpType::$INT, 0), ExpType::coerceToNumber(new Token(ExpType::$NULL, null)));
$this->assertEquals(new Token(ExpType::$FLOAT, 1.0), ExpType::coerceToNumber(new Token(ExpType::$RAW, '1.0')));
$this->assertEquals(new Token(ExpType::$FLOAT, 1.0), ExpType::coerceToNumber(new Token(ExpType::$STRING, '1.0')));
// coerce string
$this->assertEquals($this->tokens['string'], ExpType::coerceToString($this->tokens['string']));
$this->assertEquals(new Token(ExpType::$STRING, '2'), ExpType::coerceToString(new Token(ExpType::$RAW, '2')));
$this->assertEquals(new Token(ExpType::$STRING, '2'), ExpType::coerceToString(new Token(ExpType::$INT, 2)));
$this->assertEquals(new Token(ExpType::$STRING, '2'), ExpType::coerceToString(new Token(ExpType::$FLOAT, 2.0)));
$this->assertEquals(new Token(ExpType::$STRING, '2.5'), ExpType::coerceToString(new Token(ExpType::$FLOAT, 2.5)));
$this->assertEquals(new Token(ExpType::$STRING, 'true'), ExpType::coerceToString(new Token(ExpType::$BOOL, true)));
$this->assertEquals(new Token(ExpType::$STRING, 'false'), ExpType::coerceToString(new Token(ExpType::$BOOL, false)));
$this->assertEquals(new Token(ExpType::$STRING, 'null'), ExpType::coerceToString(new Token(ExpType::$NULL, null)));
// coerce bool
$this->assertEquals($this->tokens['bool'], ExpType::coerceToBool($this->tokens['bool']));
$this->assertEquals(new Token(ExpType::$BOOL, true), ExpType::coerceToBool(new Token(ExpType::$RAW, 'True')));
$this->assertEquals(new Token(ExpType::$BOOL, true), ExpType::coerceToBool(new Token(ExpType::$RAW, 'true')));
$this->assertEquals(new Token(ExpType::$BOOL, false), ExpType::coerceToBool(new Token(ExpType::$RAW, 'False')));
$this->assertEquals(new Token(ExpType::$BOOL, false), ExpType::coerceToBool(new Token(ExpType::$RAW, 'false')));
$this->assertEquals(new Token(ExpType::$BOOL, true), ExpType::coerceToBool(new Token(ExpType::$STRING, 'false')));
$this->assertEquals(new Token(ExpType::$BOOL, false), ExpType::coerceToBool(new Token(ExpType::$STRING, '')));
$this->assertEquals(new Token(ExpType::$BOOL, true), ExpType::coerceToBool(new Token(ExpType::$INT, 2)));
$this->assertEquals(new Token(ExpType::$BOOL, false), ExpType::coerceToBool(new Token(ExpType::$INT, 0)));
$this->assertEquals(new Token(ExpType::$BOOL, true), ExpType::coerceToBool(new Token(ExpType::$FLOAT, 2.0)));
$this->assertEquals(new Token(ExpType::$BOOL, false), ExpType::coerceToBool(new Token(ExpType::$FLOAT, 0.0)));
$this->assertEquals(new Token(ExpType::$BOOL, false), ExpType::coerceToBool(new Token(ExpType::$NULL, null)));
// coerce null
$this->assertEquals($this->tokens['null'], ExpType::coerceToNull($this->tokens['null']));
$this->assertEquals($this->tokens['null'], ExpType::coerceToNull(new Token(ExpType::$RAW, 'null')));
}
private static function evaluateLiterals(&$tokenStream)
{
for ($i = 0; $i < count($tokenStream); $i++) {
$node = $tokenStream[$i];
if ($node->type != ExpType::$RAW) {
continue;
}
$str = strtolower($node->value);
if ($str == 'true' || $str == 'false') {
$tokenStream[$i] = ExpType::coerceToBool($node);
} elseif ($str == 'null') {
$tokenStream[$i] = ExpType::coerceToNull($node);
} elseif (preg_match(ExpLexer::$NUMBER_PATTERN, $str) == 1) {
$tokenStream[$i] = ExpType::coerceToNumber($node);
} elseif (preg_match(ExpLexer::$IDENTITY_PATTERN, $str) == 1) {
// is identity
$tokenStream[$i]->type = ExpType::$IDENTITY;
} else {
// mal-format
throw new ExpLexerException("Mal-format expression segment: " . $node->value);
}
}
}
