From 28d4c891be182db6e07638722284c5296bf06e0a Mon Sep 17 00:00:00 2001
From: Daniel Schoepe <schoeped@amazon.com>
Date: Mon, 16 Sep 2024 15:56:51 -0700
Subject: [PATCH] Add missing PreResolve plugin hook

This hook is described in the [documentation](https://dafny.org/latest/DafnyRef/DafnyRef#sec-plugins) but wasn't actually
provided to plugins.
---
 Source/DafnyCore/Plugins/Rewriter.cs         | 8 ++++++++
 Source/DafnyCore/Rewriters/PluginRewriter.cs | 4 ++++
 2 files changed, 12 insertions(+)

diff --git a/Source/DafnyCore/Plugins/Rewriter.cs b/Source/DafnyCore/Plugins/Rewriter.cs
index 973e6c5401f..4a2416ad145 100644
--- a/Source/DafnyCore/Plugins/Rewriter.cs
+++ b/Source/DafnyCore/Plugins/Rewriter.cs
@@ -32,6 +32,14 @@ public virtual void PostResolve(Program program) {
       Contract.Requires(program != null);
     }
 
+    /// <summary>
+    /// Override this method to perform changes to the AST of a module before resolution.
+    /// You can also report warnings and errors using reporter.Error
+    /// </summary>
+    /// <param name="module">The module before resolution</param>
+    public virtual void PreResolve(ModuleDefinition module) {
+    }
+
     /// <summary>
     /// Override this method to obtain the resolved module before the translation pipeline occurs
     /// after the individual PostResolve on every module
diff --git a/Source/DafnyCore/Rewriters/PluginRewriter.cs b/Source/DafnyCore/Rewriters/PluginRewriter.cs
index 729a7a9bc01..07b4b6b1c90 100644
--- a/Source/DafnyCore/Rewriters/PluginRewriter.cs
+++ b/Source/DafnyCore/Rewriters/PluginRewriter.cs
@@ -15,6 +15,10 @@ internal override void PostResolve(Program program) {
     internalRewriter.PostResolve(program);
   }
 
+  internal override void PreResolve(ModuleDefinition module) {
+    internalRewriter.PreResolve(module);
+  }
+
   internal override void PreVerify(ModuleDefinition module) {
     internalRewriter.PreVerify(module);
   }