1 files changed, 58 insertions, 0 deletions
diff --git a/libdino/src/qlite/statement_builder.vala b/libdino/src/qlite/statement_builder.vala
new file mode 100644
index 00000000..5c756ab3
--- /dev/null
+++ b/libdino/src/qlite/statement_builder.vala
@@ -0,0 +1,58 @@
+using Sqlite;
+
+namespace Dino.Qlite {
+
+public abstract class StatementBuilder {
+    protected Database db;
+
+    internal StatementBuilder(Database db) {
+        this.db = db;
+    }
+
+    internal abstract Statement prepare();
+
+    internal abstract class AbstractField<T> {
+        public T value;
+        public Column<T>? column;
+
+        AbstractField(T value) {
+            this.value = value;
+        }
+
+        internal abstract void bind(Statement stmt, int index);
+    }
+
+    internal class Field<T> : AbstractField<T> {
+        public Field(Column<T> column, T value) {
+            base(value);
+            this.column = column;
+        }
+
+        internal override void bind(Statement stmt, int index) {
+            ((!)column).bind(stmt, index, value);
+        }
+    }
+
+    internal class NullField<T> : AbstractField<T> {
+        public NullField(Column<T> column) {
+            base(null);
+            this.column = column;
+        }
+
+        internal override void bind(Statement stmt, int index) {
+            stmt.bind_null(index);
+        }
+    }
+
+    internal class StringField : AbstractField<string> {
+        public StringField(string value) {
+            base(value);
+        }
+
+        internal override void bind(Statement stmt, int index) {
+            stmt.bind_text(index, value);
+        }
+    }
+}
+
+}