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SVN:code[2]

core/oql/oqlinterpreter.class.inc.php

@@ -0,0 +1,55 @@
+<?
+
+class OqlNormalizeException extends OQLException
+{
+}
+
+class OqlInterpreterException extends OQLException
+{
+}
+
+
+class OqlInterpreter
+{
+	public $m_sQuery;
+
+	public function __construct($sQuery)
+	{
+		$this->m_sQuery = $sQuery;
+	}
+
+	protected function Parse()
+	{
+		$oLexer = new OQLLexer($this->m_sQuery);
+		$oParser = new OQLParser($this->m_sQuery);
+
+		while($oLexer->yylex())
+		{
+			$oParser->doParse($oLexer->token, $oLexer->value, $oLexer->getTokenPos());
+		}
+		$res = $oParser->doFinish();
+		return $res;
+	}
+
+	public function ParseQuery()
+	{
+		$oRes = $this->Parse();
+		if (!$oRes instanceof OqlQuery)
+		{
+			throw new OqlException('Expecting an OQL query', $this->m_sQuery, 0, 0, get_class($oRes), array('OqlQuery'));
+		}
+		return $oRes;
+	}
+
+	public function ParseExpression()
+	{
+		$oRes = $this->Parse();
+		if (!$oRes instanceof Expression)
+		{
+			throw new OqlException('Expecting an OQL expression', $this->m_sQuery, 0, 0, get_class($oRes), array('Expression'));
+		}
+		return $oRes;
+	}
+}
+
+?>