1 files changed, 236 insertions, 0 deletions
diff --git a/src/pkg/go/printer/testdata/comments.input b/src/pkg/go/printer/testdata/comments.input
new file mode 100644
index 000000000..05399a3c6
--- /dev/null
+++ b/src/pkg/go/printer/testdata/comments.input
@@ -0,0 +1,236 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// This is a package for testing comment placement by go/printer.
+//
+package main
+
+import "fmt"  // fmt
+
+const c0 = 0;  // zero
+const (
+	c1 = iota;  // c1
+	c2;  // c2
+)
+
+
+// The SZ struct; it is empty.
+type SZ struct {}
+
+// The S0 struct; no field is exported.
+type S0 struct {
+	int;
+	x, y, z int;  // 3 unexported fields
+}
+
+// The S1 struct; some fields are not exported.
+type S1 struct {
+	S0;
+	A, B, C float;  // 3 exported fields
+	D, b, c int;  // 2 unexported fields
+}
+
+// The S2 struct; all fields are exported.
+type S2 struct {
+	S1;
+	A, B, C float;  // 3 exported fields
+}
+
+// The IZ interface; it is empty.
+type SZ interface {}
+
+// The I0 interface; no method is exported.
+type I0 interface {
+	f(x int) int;  // unexported method
+}
+
+// The I1 interface; some methods are not exported.
+type I1 interface {
+	I0;
+	F(x float) float;  // exported methods
+	g(x int) int;  // unexported method
+}
+
+// The I2 interface; all methods are exported.
+type I2 interface {
+	I0;
+	F(x float) float;  // exported method
+	G(x float) float;  // exported method
+}
+
+// This comment group should be separated
+// with a newline from the next comment
+// group.
+
+// This comment should NOT be associated with the next declaration.
+
+var x int;  // x
+var ()
+
+
+// This comment SHOULD be associated with the next declaration.
+func f0() {
+	const pi = 3.14;  // pi
+	var s1 struct {}  /* an empty struct */ /* foo */
+	// a struct constructor
+	// --------------------
+	var s2 struct {} = struct {}{};
+	x := pi;
+}
+//
+// NO SPACE HERE
+//
+func f1() {
+	f0();
+	/* 1 */
+	// 2
+	/* 3 */
+	/* 4 */
+	f0();
+}
+
+
+func _() {
+	// this comment should be properly indented
+}
+
+
+func abs(x int) int {
+	if x < 0 {  // the tab printed before this comment's // must not affect the remaining lines
+		return -x;  // this statement should be properly indented
+	}
+	return x;
+}
+
+
+func typeswitch(x interface{}) {
+	switch v := x.(type) {
+	case bool, int, float:
+	case string:
+	default:
+	}
+
+	switch x.(type) {
+	}
+
+	switch v0, ok := x.(int); v := x.(type) {
+	}
+
+	switch v0, ok := x.(int); x.(type) {
+	case bool, int, float:
+		// this comment should be indented
+	case string:
+	default:
+		// this comment should be indented
+	}
+	// this comment should not be indented
+}
+
+func _() {
+	/* freestanding comment
+	   aligned		line
+	   aligned line
+	*/
+}
+
+func _() {
+	/* freestanding comment
+	   aligned		line
+	   aligned line
+	   */
+}
+
+func _() {
+	/* freestanding comment
+	   aligned		line
+	   aligned line */
+}
+
+func _() {
+	/*	freestanding comment
+		aligned		line
+		aligned line
+	*/
+}
+
+func _() {
+	/*	freestanding comment
+		aligned		line
+		aligned line
+		*/
+}
+
+func _() {
+	/*	freestanding comment
+		aligned		line
+		aligned line */
+}
+
+
+/*
+ * line
+ * of
+ * stars
+ */
+
+/* another line
+ * of
+ * stars */
+
+/*	and another line
+ *	of
+ *	stars */
+
+/*
+aligned in middle
+here
+        not here
+*/
+
+/*
+blank line in middle:
+
+with no leading spaces on blank line.
+*/
+
+func _() {
+	/*
+	 * line
+	 * of
+	 * stars
+	 */
+
+	/*
+	aligned in middle
+	here
+		not here
+	*/
+
+	/*
+	blank line in middle:
+
+	with no leading spaces on blank line.
+*/
+}
+
+
+// Some interesting interspersed comments
+func _(/* this */x/* is *//* an */ int) {
+}
+
+
+// Line comments with tabs
+func _() {
+var	finput		*bufio.Reader;			// input file
+var	stderr		*bufio.Writer;
+var	ftable		*bufio.Writer;			// y.go file
+var	foutput		*bufio.Writer;			// y.output file
+
+var	oflag		string;				// -o [y.go]		- y.go file
+var	vflag		string;				// -v [y.output]	- y.output file
+var	lflag		bool;				// -l			- disable line directives
+}
+
+
+// This comment is the last entry in this file. It must be printed.