From 16c881ad8573b0bb87e8bfb0c71cba90b701e9a9 Mon Sep 17 00:00:00 2001
From: Dmitry Vyukov <dvyukov@google.com>
Date: Mon, 13 May 2019 18:52:46 +0200
Subject: pkg/compiler: generate complex len targets

Change the generated format for len type to support multiple path elements.
---
 pkg/compiler/types.go | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

(limited to 'pkg')

diff --git a/pkg/compiler/types.go b/pkg/compiler/types.go
index d2d3380a6..6d9211686 100644
--- a/pkg/compiler/types.go
+++ b/pkg/compiler/types.go
@@ -220,9 +220,13 @@ var typeLen = &typeDesc{
 		case "bitsize":
 			bitSize = 1
 		}
+		path := []string{args[0].Ident}
+		for _, col := range args[0].Colon {
+			path = append(path, col.Ident)
+		}
 		return &prog.LenType{
 			IntTypeCommon: base,
-			Buf:           args[0].Ident,
+			Path:          path,
 			BitSize:       bitSize,
 		}
 	},
@@ -346,6 +350,9 @@ var typeCsum = &typeDesc{
 		if len(args) > 2 && genCsumKind(args[1]) != prog.CsumPseudo {
 			comp.error(args[2].Pos, "only pseudo csum can have proto")
 		}
+		if len(args[0].Colon) != 0 {
+			comp.error(args[0].Colon[0].Pos, "path expressions are not implemented for csum")
+		}
 	},
 	Gen: func(comp *compiler, t *ast.Type, args []*ast.Type, base prog.IntTypeCommon) prog.Type {
 		var proto uint64
-- 
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