From afdf31a66c666870edcd407841451719e4a41df2 Mon Sep 17 00:00:00 2001
From: xushiwei <x@goplus.org>
Date: Tue, 30 Jul 2024 00:28:04 +0800
Subject: [PATCH 1/3] library: encoding/{binary, base64}

---
 README.md                     |  2 ++
 _cmptest/base64demo/base64.go | 18 ++++++++++++++++++
 ssa/expr.go                   |  1 +
 3 files changed, 21 insertions(+)
 create mode 100644 _cmptest/base64demo/base64.go

diff --git a/README.md b/README.md
index fed235f6..a1432878 100644
--- a/README.md
+++ b/README.md
@@ -291,6 +291,8 @@ Here are the Go packages that can be imported correctly:
 * [fmt](https://pkg.go.dev/fmt) (partially)
 * [reflect](https://pkg.go.dev/reflect) (partially)
 * [time](https://pkg.go.dev/time) (partially)
+* [encoding/binary](https://pkg.go.dev/encoding/binary)
+* [encoding/base64](https://pkg.go.dev/encoding/base64)
 * [regexp](https://pkg.go.dev/regexp)
 * [regexp/syntax](https://pkg.go.dev/regexp/syntax)
 
diff --git a/_cmptest/base64demo/base64.go b/_cmptest/base64demo/base64.go
new file mode 100644
index 00000000..22728ba9
--- /dev/null
+++ b/_cmptest/base64demo/base64.go
@@ -0,0 +1,18 @@
+package main
+
+import (
+	"encoding/base64"
+	"fmt"
+)
+
+func main() {
+	msg := "Hello, 世界"
+	encoded := base64.StdEncoding.EncodeToString([]byte(msg))
+	fmt.Println(encoded)
+	decoded, err := base64.StdEncoding.DecodeString(encoded)
+	if err != nil {
+		fmt.Println("decode error:", err)
+		return
+	}
+	fmt.Println(string(decoded))
+}
diff --git a/ssa/expr.go b/ssa/expr.go
index 9400958a..263ebb7a 100644
--- a/ssa/expr.go
+++ b/ssa/expr.go
@@ -699,6 +699,7 @@ func (b Builder) ChangeType(t Type, x Expr) (ret Expr) {
 		case vkFuncDecl:
 			ret.impl = checkExpr(x, t.raw.Type, b).impl
 		case vkClosure:
+			// TODO(xsw): change type should be a noop instruction
 			convType := func() Expr {
 				r := Expr{llvm.CreateAlloca(b.impl, t.ll), b.Prog.Pointer(t)}
 				b.Store(r, x)

From ad1a42d6a5c3369b7eded41be6c2f6239b9440a2 Mon Sep 17 00:00:00 2001
From: xushiwei <x@goplus.org>
Date: Tue, 30 Jul 2024 00:30:58 +0800
Subject: [PATCH 2/3] library: encoding/base32

---
 README.md                     |  1 +
 _cmptest/base64demo/base64.go | 20 +++++++++++++++++++-
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index a1432878..a8ff2825 100644
--- a/README.md
+++ b/README.md
@@ -292,6 +292,7 @@ Here are the Go packages that can be imported correctly:
 * [reflect](https://pkg.go.dev/reflect) (partially)
 * [time](https://pkg.go.dev/time) (partially)
 * [encoding/binary](https://pkg.go.dev/encoding/binary)
+* [encoding/base32](https://pkg.go.dev/encoding/base32)
 * [encoding/base64](https://pkg.go.dev/encoding/base64)
 * [regexp](https://pkg.go.dev/regexp)
 * [regexp/syntax](https://pkg.go.dev/regexp/syntax)
diff --git a/_cmptest/base64demo/base64.go b/_cmptest/base64demo/base64.go
index 22728ba9..e80a6f42 100644
--- a/_cmptest/base64demo/base64.go
+++ b/_cmptest/base64demo/base64.go
@@ -1,11 +1,12 @@
 package main
 
 import (
+	"encoding/base32"
 	"encoding/base64"
 	"fmt"
 )
 
-func main() {
+func base64Demo() {
 	msg := "Hello, 世界"
 	encoded := base64.StdEncoding.EncodeToString([]byte(msg))
 	fmt.Println(encoded)
@@ -16,3 +17,20 @@ func main() {
 	}
 	fmt.Println(string(decoded))
 }
+
+func base32Demo() {
+	str := "JBSWY3DPFQQHO33SNRSCC==="
+	dst := make([]byte, base32.StdEncoding.DecodedLen(len(str)))
+	n, err := base32.StdEncoding.Decode(dst, []byte(str))
+	if err != nil {
+		fmt.Println("decode error:", err)
+		return
+	}
+	dst = dst[:n]
+	fmt.Printf("%q\n", dst)
+}
+
+func main() {
+	base64Demo()
+	base32Demo()
+}

From 679e2d0f6baa8b7bc8b6742e93810e7e4a92e5d1 Mon Sep 17 00:00:00 2001
From: xushiwei <x@goplus.org>
Date: Tue, 30 Jul 2024 00:33:44 +0800
Subject: [PATCH 3/3] library: encoding/hex

---
 README.md                     |  1 +
 _cmptest/base64demo/base64.go | 12 ++++++++++++
 2 files changed, 13 insertions(+)

diff --git a/README.md b/README.md
index a8ff2825..5762e3dd 100644
--- a/README.md
+++ b/README.md
@@ -292,6 +292,7 @@ Here are the Go packages that can be imported correctly:
 * [reflect](https://pkg.go.dev/reflect) (partially)
 * [time](https://pkg.go.dev/time) (partially)
 * [encoding/binary](https://pkg.go.dev/encoding/binary)
+* [encoding/hex](https://pkg.go.dev/encoding/hex)
 * [encoding/base32](https://pkg.go.dev/encoding/base32)
 * [encoding/base64](https://pkg.go.dev/encoding/base64)
 * [regexp](https://pkg.go.dev/regexp)
diff --git a/_cmptest/base64demo/base64.go b/_cmptest/base64demo/base64.go
index e80a6f42..0fbd1fa4 100644
--- a/_cmptest/base64demo/base64.go
+++ b/_cmptest/base64demo/base64.go
@@ -3,7 +3,9 @@ package main
 import (
 	"encoding/base32"
 	"encoding/base64"
+	"encoding/hex"
 	"fmt"
+	"log"
 )
 
 func base64Demo() {
@@ -30,7 +32,17 @@ func base32Demo() {
 	fmt.Printf("%q\n", dst)
 }
 
+func hexDemo() {
+	const s = "48656c6c6f20476f7068657221"
+	decoded, err := hex.DecodeString(s)
+	if err != nil {
+		log.Fatal(err)
+	}
+	fmt.Printf("%s\n", decoded)
+
+}
 func main() {
 	base64Demo()
 	base32Demo()
+	hexDemo()
 }