public function testMap()
{
$lex = new RegexLexer(true);
$lex->operator = '[-+]';
$lex->integer = '[0-9]+';
$lex->map('integer', function ($value, $matches, $offset) {
return intval($value) + 2;
});
$tokens = $lex('5-7');
$this->assertCount(3, $tokens);
$this->assertEquals('integer', $tokens[0][0]);
$this->assertEquals('operator', $tokens[1][0]);
$this->assertEquals('integer', $tokens[2][0]);
$this->assertEquals(7, $tokens[0][1]);
$this->assertEquals('-', $tokens[1][1]);
$this->assertEquals(9, $tokens[2][1]);
$this->assertEquals(0, $tokens[0][3]);
$this->assertEquals(1, $tokens[1][3]);
$this->assertEquals(2, $tokens[2][3]);
}
/**
* @param string $expression
* @return ParseInput
*/
public static function lex($expression, $vars)
{
$lexer = new RegexLexer(true, 'i');
$lexer->is = 'is';
$lexer->not = 'not';
$lexer->bool = 'true|false';
$lexer->null = 'null';
$lexer->operator = 'like|in|!=|<>|>=|<=|!<|!>|=|<|>|and|or';
$lexer->dot = '\\.';
$lexer->name = '[a-z][a-z0-9]*';
$lexer->model = '\\{(.+?)\\}';
$lexer->modelPlaceholder = '%(model|m)';
$lexer->field = '\\[(.+?)\\]';
$lexer->fieldPlaceholder = '%(column|field|c)';
$lexer->number = '-?(0|[1-9]\\d*)(\\.\\d+)?([eE][+-]?\\d+)?';
$lexer->string = '"((?:[^"\\\\]|\\\\.)*)"';
$lexer->placeholder = '((\\?)|%([a-z_\\\\]+))(\\(\\))?';
$lexer->map('model', function ($value, $matches) {
return $matches[1];
});
$lexer->map('field', function ($value, $matches) {
return $matches[1];
});
$lexer->map('number', function ($value) {
if (strpos($value, '.') !== false or stripos($value, 'e') !== false) {
return new Literal(DataType::float(), floatval($value));
} else {
return new Literal(DataType::integer(), intval($value));
}
});
$lexer->mapType('number', 'literal');
$lexer->map('string', function ($value, $matches) {
return new Literal(DataType::text(), stripslashes($matches[1]));
});
$lexer->mapType('string', 'literal');
$lexer->map('bool', function ($value) {
return new Literal(DataType::boolean(), strtolower($value) == 'true');
});
$lexer->mapType('bool', 'literal');
$lexer->map('model', function ($value, $matches) {
return $matches[1];
});
$lexer->map('field', function ($value, $matches) {
return $matches[1];
});
$i = 0;
$lexer->map('modelPlaceholder', function ($value, $matches) use(&$i, $vars) {
$value = $vars[$i];
$i++;
if (!is_string($value)) {
assume($value instanceof Model);
$value = $value->getName();
}
return $value;
});
$lexer->mapType('modelPlaceholder', 'model');
$lexer->map('fieldPlaceholder', function ($value, $matches) use(&$i, $vars) {
$value = $vars[$i];
$i++;
assume(is_string($value));
return $value;
});
$lexer->mapType('fieldPlaceholder', 'field');
$lexer->map('placeholder', function ($value, $matches) use(&$i, $vars) {
$value = $vars[$i];
$i++;
$type = null;
if (isset($matches[3])) {
if ($matches[3] == '_') {
if (!is_string($value)) {
assume($value instanceof DataType);
$value = $value->placeholder;
}
$matches[3] = ltrim($value, '%');
$value = $vars[$i];
$i++;
}
if ($matches[3] == 'e' or $matches[3] == 'expr' or $matches[3] == 'expression') {
assume($value instanceof Expression);
return $value;
}
if ($matches[3] != '()') {
$type = DataType::fromPlaceholder($matches[3]);
}
}
if (!isset($type)) {
$type = DataType::detectType($value);
}
if (isset($matches[4]) or isset($matches[3]) and $matches[3] == '()') {
assume(is_array($value));
foreach ($value as $key => $v) {
$value[$key] = $v;
}
return new ArrayLiteral($type, $value);
}
return new Literal($type, $value);
});
$lexer->mapType('placeholder', 'literal');
return new ParseInput($lexer($expression));
}