Share error handling in one base class

Signed-off-by: Michal Čihař <michal@cihar.com>

src/Core.php

@@ -0,0 +1,52 @@
+<?php
+
+/**
+ * Defines the core helper infrastructure of the library.
+ *
+ * @package SqlParser
+ */
+namespace SqlParser;
+
+
+class Core
+{
+
+    /**
+     * Whether errors should throw exceptions or just be stored.
+     *
+     * @var bool
+     *
+     * @see static::$errors
+     */
+    public $strict = false;
+
+    /**
+     * List of errors that occurred during lexing.
+     *
+     * Usually, the lexing does not stop once an error occurred because that
+     * error might be false positive or a partial result (even a bad one)
+     * might be needed.
+     *
+     * @var Exception[]
+     *
+     * @see Core::error()
+     */
+    public $errors = array();
+
+    /**
+     * Creates a new error log.
+     *
+     * @param Exception $error The error exception.
+     *
+     * @throws Exception Throws the exception, if strict mode is enabled.
+     *
+     * @return void
+     */
+    public function error($error)
+    {
+        if ($this->strict) {
+            throw $error;
+        }
+        $this->errors[] = $error;
+    }
+}

src/Lexer.php

@@ -41,7 +41,7 @@
  * @license  https://www.gnu.org/licenses/gpl-2.0.txt GPL-2.0+
  * @see      Context
  */
-class Lexer
+class Lexer extends Core
 {
 
     /**
@@ -79,15 +79,6 @@ class Lexer
         'parseSymbol', 'parseKeyword', 'parseLabel', 'parseUnknown'
     );
 
-    /**
-     * Whether errors should throw exceptions or just be stored.
-     *
-     * @var bool
-     *
-     * @see static::$errors
-     */
-    public $strict = false;
-
     /**
      * The string to be parsed.
      *
@@ -145,19 +136,6 @@ class Lexer
      */
     public $delimiterLen;
 
-    /**
-     * List of errors that occurred during lexing.
-     *
-     * Usually, the lexing does not stop once an error occurred because that
-     * error might be false positive or a partial result (even a bad one)
-     * might be needed.
-     *
-     * @var LexerException[]
-     *
-     * @see Lexer::error()
-     */
-    public $errors = array();
-
     /**
      * Gets the tokens list parsed by a new instance of a lexer.
      *
@@ -375,10 +353,7 @@ public function lex()
     public function error($msg = '', $str = '', $pos = 0, $code = 0)
     {
         $error = new LexerException($msg, $str, $pos, $code);
-        if ($this->strict) {
-            throw $error;
-        }
-        $this->errors[] = $error;
+        parent::error($error);
     }
 
     /**

src/Parser.php

@@ -23,7 +23,7 @@
  * @package  SqlParser
  * @license  https://www.gnu.org/licenses/gpl-2.0.txt GPL-2.0+
  */
-class Parser
+class Parser extends Core
 {
 
     /**
@@ -318,28 +318,6 @@ class Parser
      */
     public $list;
 
-    /**
-     * Whether errors should throw exceptions or just be stored.
-     *
-     * @var bool
-     *
-     * @see static::$errors
-     */
-    public $strict = false;
-
-    /**
-     * List of errors that occurred during parsing.
-     *
-     * Usually, the parsing does not stop once an error occurred because that
-     * error might be a false positive or a partial result (even a bad one)
-     * might be needed.
-     *
-     * @var ParserException[]
-     *
-     * @see Parser::error()
-     */
-    public $errors = array();
-
     /**
      * List of statements parsed.
      *
@@ -599,9 +577,6 @@ public function parse()
     public function error($msg = '', Token $token = null, $code = 0)
     {
         $error = new ParserException($msg, $token, $code);
-        if ($this->strict) {
-            throw $error;
-        }
-        $this->errors[] = $error;
+        parent::error($error);
     }
 }