+typedef struct searchASTCache {
+ searchASTExpr *tree;
+ searchASTExpr *cache[AST_RECENT];
+ int nextpos;
+} searchASTCache;
+
+#define __NSASTSizeOfArray(x) (sizeof(x) / sizeof(x[0]))
+
+#define __NSASTExpr(x, y, ...) (searchASTExpr){.type = x, .u.y = __VA_ARGS__}
+#define __NSASTRawNode(x, c, y) (searchASTNode){.fn = x, .argc = c, .argv = y}
+
+#define __NSASTSizeNode(x, y) __NSASTRawNode(x, __NSASTSizeOfArray(y), y)
+#define __NSASTNode(x, ...) __NSASTSizeNode(x, ((searchASTExpr []){__VA_ARGS__}))