/**
* 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::$RAW, 'null')));
}
private static function divideString($tokenStream)
{
$newTokenStream = array();
foreach ($tokenStream as $node) {
if ($node->type != ExpType::$RAW) {
// bypass the proceed nodes
array_push($newTokenStream, $node);
continue;
}
$str = $node->value;
$state = 0;
// 0: seeking, 1: found "'", 2: found '"'
$pos = 0;
for ($i = 0; $i < strlen($str); $i++) {
if ($str[$i] != "'" && $str[$i] != '"') {
continue;
}
$targetState = $str[$i] == "'" ? 1 : 2;
if ($state == 0) {
// found "'" or '"'
$state = $targetState;
if ($pos != $i) {
// output the previous segment
$newnode = new Token(ExpType::$RAW, substr($str, $pos, $i - $pos));
array_push($newTokenStream, $newnode);
}
$pos = $i + 1;
} elseif ($state == $targetState) {
// test whether it has been escaped
if (ExpLexer::isEscaped($str, $i)) {
continue;
}
// bypass the escaped ones
// output the string segment
$string = ExpType::coerceToString(new Token(ExpType::$RAW, substr($str, $pos, $i - $pos)));
array_push($newTokenStream, $string);
$pos = $i + 1;
$state = 0;
}
}
if ($state != 0) {
// there's open quote exists
throw new ExpLexerException("Unterminated string: " . $str);
}
if ($pos != strlen($str)) {
// output the remaining segment
$newnode = new Token(ExpType::$RAW, substr($str, $pos, strlen($str) - $pos));
array_push($newTokenStream, $newnode);
}
}
return $newTokenStream;
}