From 19528c3cab1020196bd6a033dd47871e087f8886 Mon Sep 17 00:00:00 2001
From: Tavian Barnes <tavianator@tavianator.com>
Date: Tue, 6 Oct 2020 13:12:09 -0400
Subject: expr, eval: Clean up header dependencies

---
 eval.h | 23 +++++++++++++++++++++--
 1 file changed, 21 insertions(+), 2 deletions(-)

(limited to 'eval.h')

diff --git a/eval.h b/eval.h
index 9a1885b..2a43e09 100644
--- a/eval.h
+++ b/eval.h
@@ -22,8 +22,27 @@
 #ifndef BFS_EVAL_H
 #define BFS_EVAL_H
 
-#include "ctx.h"
-#include "expr.h"
+#include <stdbool.h>
+
+struct bfs_ctx;
+struct expr;
+
+/**
+ * Ephemeral state for evaluating an expression.
+ */
+struct eval_state;
+
+/**
+ * Expression evaluation function.
+ *
+ * @param expr
+ *         The current expression.
+ * @param state
+ *         The current evaluation state.
+ * @return
+ *         The result of the test.
+ */
+typedef bool eval_fn(const struct expr *expr, struct eval_state *state);
 
 /**
  * Evaluate the command line.
-- 
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