Now all modules are in core modules folder

modules/views/handlers/views_handler_argument_formula.inc

@@ -0,0 +1,54 @@
+<?php
+/**
+ * Abstract argument handler for simple formulae.
+ *
+ * Child classes of this object should implement summary_argument, at least.
+ *
+ * Definition terms:
+ * - formula: The formula to use for this handler.
+ *
+ * @ingroup views_argument_handlers
+ */
+class views_handler_argument_formula extends views_handler_argument {
+  var $formula = NULL;
+  /**
+   * Constructor
+   */
+  function construct() {
+    parent::construct();
+
+    if (!empty($this->definition['formula'])) {
+      $this->formula = $this->definition['formula'];
+    }
+  }
+
+  function get_formula() {
+    return str_replace('***table***', $this->table_alias, $this->formula);
+  }
+
+  /**
+   * Build the summary query based on a formula
+   */
+  function summary_query() {
+    $this->ensure_my_table();
+    // Now that our table is secure, get our formula.
+    $formula = $this->get_formula();
+
+    // Add the field.
+    $this->base_alias = $this->name_alias = $this->query->add_field(NULL, $formula, $this->field);
+    $this->query->set_count_field(NULL, $formula, $this->field);
+
+    return $this->summary_basics(FALSE);
+  }
+
+  /**
+   * Build the query based upon the formula
+   */
+  function query() {
+    $this->ensure_my_table();
+    // Now that our table is secure, get our formula.
+    $formula = $this->get_formula();
+
+    $this->query->add_where(0, "$formula = '%s'", $this->argument);
+  }
+}