Forward macros

Author: sfackler

postgres/src/macros.rs

@@ -35,3 +35,35 @@ macro_rules! debug {
 macro_rules! info {
     ($($t:tt)*) => {}
 }
+
+/// Generates a simple implementation of `ToSql::accepts` which accepts the
+/// types passed to it.
+#[macro_export]
+macro_rules! accepts {
+    ($($expected:pat),+) => (
+        fn accepts(ty: &$crate::types::Type) -> bool {
+            match *ty {
+                $($expected)|+ => true,
+                _ => false
+            }
+        }
+    )
+}
+
+/// Generates an implementation of `ToSql::to_sql_checked`.
+///
+/// All `ToSql` implementations should use this macro.
+#[macro_export]
+macro_rules! to_sql_checked {
+    () => {
+        fn to_sql_checked(&self,
+                          ty: &$crate::types::Type,
+                          out: &mut ::std::vec::Vec<u8>)
+                          -> ::std::result::Result<$crate::types::IsNull,
+                                                   Box<::std::error::Error +
+                                                       ::std::marker::Sync +
+                                                       ::std::marker::Send>> {
+            $crate::types::__to_sql_checked(self, ty, out)
+        }
+    }
+}

tokio-postgres/src/lib.rs

@@ -101,6 +101,8 @@ use transaction::Transaction;
 use types::{Oid, Type, ToSql, IsNull, FromSql, Kind, Field, NAME, CHAR, OID};
 use rows::Row;
 
+#[macro_use]
+mod macros;
 pub mod rows;
 pub mod stmt;
 mod sink;

tokio-postgres/src/macros.rs

@@ -0,0 +1,31 @@
+/// Generates a simple implementation of `ToSql::accepts` which accepts the
+/// types passed to it.
+#[macro_export]
+macro_rules! accepts {
+    ($($expected:pat),+) => (
+        fn accepts(ty: &$crate::types::Type) -> bool {
+            match *ty {
+                $($expected)|+ => true,
+                _ => false
+            }
+        }
+    )
+}
+
+/// Generates an implementation of `ToSql::to_sql_checked`.
+///
+/// All `ToSql` implementations should use this macro.
+#[macro_export]
+macro_rules! to_sql_checked {
+    () => {
+        fn to_sql_checked(&self,
+                          ty: &$crate::types::Type,
+                          out: &mut ::std::vec::Vec<u8>)
+                          -> ::std::result::Result<$crate::types::IsNull,
+                                                   Box<::std::error::Error +
+                                                       ::std::marker::Sync +
+                                                       ::std::marker::Send>> {
+            $crate::types::__to_sql_checked(self, ty, out)
+        }
+    }
+}