From f21bb98fc5ec4e288662b44cc35143a14942f33e Mon Sep 17 00:00:00 2001
From: urso <steffen.siering at gmail.com>
Date: Mon, 18 Mar 2024 17:32:16 +0100
Subject: [PATCH] export meta

---
 src/pgzx.zig      | 4 ++++
 src/pgzx/meta.zig | 7 +++++++
 2 files changed, 11 insertions(+)

diff --git a/src/pgzx.zig b/src/pgzx.zig
index f594fb1..a9843b8 100644
--- a/src/pgzx.zig
+++ b/src/pgzx.zig
@@ -41,4 +41,8 @@ pub const utils = @import("pgzx/utils.zig");
 pub const intr = @import("pgzx/interrupts.zig");
 pub const testing = @import("pgzx/testing.zig");
 
+// reexport the meta module. Although quite generic, it is useful to have these
+// helpers around at times.
+pub const meta = @import("pgzx/meta.zig");
+
 pub const guc = utils.guc;
diff --git a/src/pgzx/meta.zig b/src/pgzx/meta.zig
index 7f1eaa3..c607b20 100644
--- a/src/pgzx/meta.zig
+++ b/src/pgzx/meta.zig
@@ -32,3 +32,10 @@ pub inline fn isPrimitive(comptime T: type) bool {
         else => false,
     };
 }
+
+pub inline fn fnReturnType(comptime T: type, comptime fnName: []const u8) type {
+    return switch (@typeInfo(@field(T, fnName))) {
+        .Fn => |f| f.return_type.?,
+        else => @compileError("Expected a function type"),
+    };
+}