1 files changed, 84 insertions, 0 deletions
diff --git a/src/Builder.php b/src/Builder.php
new file mode 100644
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+++ b/src/Builder.php
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+<?php
+
+/**
+ * This is one of the most important components, along with the lexer and the
+ * parser.
+ *
+ * @package SqlParser
+ */
+namespace SqlParser;
+
+use SqlParser\Exceptions\ParserException;
+
+/**
+ * Builds the string representation of a Statement.
+ *
+ * @category Parser
+ * @package  SqlParser
+ * @author   Dan Ungureanu <udan1107@gmail.com>
+ * @license  http://opensource.org/licenses/GPL-2.0 GNU Public License
+ */
+class Builder
+{
+
+    /**
+     * Statement to be build.
+     *
+     * @var Statement
+     */
+    public $statement;
+
+    /**
+     * Built query.
+     *
+     * @var string
+     */
+    public $query;
+
+    /**
+     * Constructor.
+     *
+     * @param Statement $statement
+     */
+    public function __construct($statement = null)
+    {
+        $this->statement = $statement;
+
+        if ($this->statement != null) {
+            $this->build();
+        }
+    }
+
+    /**
+     * Builds the statement.
+     *
+     * @return void
+     */
+    public function build()
+    {
+        $statement = $this->statement;
+        foreach ($statement::$CLAUSES as $clause) {
+            $name = $clause[0];
+            $type = $clause[1];
+
+            if (empty(Parser::$KEYWORD_PARSERS[$name])) {
+                continue;
+            }
+
+            $class = Parser::$KEYWORD_PARSERS[$name]['class'];
+            $field = Parser::$KEYWORD_PARSERS[$name]['field'];
+
+            if (empty($statement->$field)) {
+                continue;
+            }
+
+            if ($type & 2) {
+                $this->query .= $name . ' ';
+            }
+
+            if ($type & 1) {
+                $this->query .= $class::build($statement->$field) . ' ';
+            }
+        }
+    }
+}