From 94033059eb7e9e2e6bbcdb35f9322dcbb6e88fb4 Mon Sep 17 00:00:00 2001
From: Michael McLoughlin <mmcloughlin@gmail.com>
Date: Fri, 11 Jan 2019 10:51:32 -0800
Subject: [PATCH] build: Commentf function

Convenience for adding a comment generated with fmt.Sprintf.

Updates #41
---
 build/context.go | 6 ++++++
 build/global.go  | 3 +++
 2 files changed, 9 insertions(+)

diff --git a/build/context.go b/build/context.go
index 28948e6..7e14627 100644
--- a/build/context.go
+++ b/build/context.go
@@ -2,6 +2,7 @@ package build
 
 import (
 	"errors"
+	"fmt"
 	"go/types"
 
 	"github.com/mmcloughlin/avo/attr"
@@ -138,6 +139,11 @@ func (c *Context) Comment(lines ...string) {
 	c.activefunc().AddComment(lines...)
 }
 
+// Commentf adds a formtted comment line.
+func (c *Context) Commentf(format string, a ...interface{}) {
+	c.Comment(fmt.Sprintf(format, a...))
+}
+
 func (c *Context) activefunc() *ir.Function {
 	if c.function == nil {
 		c.adderrormessage("no active function")
diff --git a/build/global.go b/build/global.go
index d0722d3..b50235d 100644
--- a/build/global.go
+++ b/build/global.go
@@ -128,5 +128,8 @@ func Label(name string) { ctx.Label(name) }
 // Comment adds comment lines to the active function.
 func Comment(lines ...string) { ctx.Comment(lines...) }
 
+// Commentf adds a formtted comment line.
+func Commentf(format string, a ...interface{}) { ctx.Commentf(format, a...) }
+
 // ConstData builds a static data section containing just the given constant.
 func ConstData(name string, v operand.Constant) operand.Mem { return ctx.ConstData(name, v) }