From 9749af08293d16f3d5faedea371fdd3699f2adf2 Mon Sep 17 00:00:00 2001
From: Tavian Barnes <tavianator@tavianator.com>
Date: Thu, 15 Aug 2024 16:51:45 -0400
Subject: expr: Tell expressions what kind of expression they are

---
 src/expr.h | 25 ++++++++++++++++++++++++-
 1 file changed, 24 insertions(+), 1 deletion(-)

(limited to 'src/expr.h')

diff --git a/src/expr.h b/src/expr.h
index 60b298d..b56e28b 100644
--- a/src/expr.h
+++ b/src/expr.h
@@ -15,6 +15,27 @@
 #include <sys/types.h>
 #include <time.h>
 
+/**
+ * Argument/token/expression kinds.
+ */
+enum bfs_kind {
+	/** A flag (-H, -L, etc.). */
+	BFS_FLAG,
+
+	/** A root path. */
+	BFS_PATH,
+
+	/** An option (-follow, -mindepth, etc.). */
+	BFS_OPTION,
+	/** A test (-name, -size, etc.). */
+	BFS_TEST,
+	/** An action (-print, -exec, etc.). */
+	BFS_ACTION,
+
+	/** An operator (-and, -or, etc.). */
+	BFS_OPERATOR,
+};
+
 /**
  * Integer comparison modes.
  */
@@ -97,6 +118,8 @@ struct bfs_expr {
 	size_t argc;
 	/** The command line arguments comprising this expression. */
 	char **argv;
+	/** The kind of expression this is. */
+	enum bfs_kind kind;
 
 	/** The number of files this expression keeps open between evaluations. */
 	int persistent_fds;
@@ -207,7 +230,7 @@ struct bfs_ctx;
 /**
  * Create a new expression.
  */
-struct bfs_expr *bfs_expr_new(struct bfs_ctx *ctx, bfs_eval_fn *eval, size_t argc, char **argv);
+struct bfs_expr *bfs_expr_new(struct bfs_ctx *ctx, bfs_eval_fn *eval, size_t argc, char **argv, enum bfs_kind kind);
 
 /**
  * @return Whether this type of expression has children.
-- 
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