vfmt: minor fixes + tests

cmd/tools/vtest-fixed.v

@@ -78,7 +78,7 @@ const (
 		'vlib/time/time_test.v',
 		'vlib/time/misc/misc_test.v',
 		'vlib/v/doc/doc_test.v',
-		// 'vlib/v/fmt/fmt_keep_test.v',
+		'vlib/v/fmt/fmt_keep_test.v',
 		'vlib/v/fmt/fmt_test.v',
 		'vlib/v/gen/cgen_test.v',
 		// 'vlib/v/parser/parser_test.v',

vlib/v/ast/str.v

@@ -2,11 +2,8 @@
 // Use of this source code is governed by an MIT license
 // that can be found in the LICENSE file.
 module ast
-/*
-These methods are used only by vfmt, vdoc, and for debugging.
-*/
-
 
+// These methods are used only by vfmt, vdoc, and for debugging.
 import (
 	v.table
 	strings
@@ -21,7 +18,10 @@ pub fn (node &FnDecl) str(t &table.Table) string {
 	if node.is_method {
 		sym := t.get_type_symbol(node.receiver.typ)
 		name := sym.name.after('.')
-		m := if node.rec_mut { 'mut ' } else { '' }
+		mut m := if node.rec_mut { 'mut ' } else { '' }
+		if !node.rec_mut && table.type_is_ptr(node.receiver.typ) {
+			m = '&'
+		}
 		receiver = '($node.receiver.name $m$name) '
 	}
 	name := node.name.after('.')
@@ -35,14 +35,13 @@ pub fn (node &FnDecl) str(t &table.Table) string {
 			continue
 		}
 		is_last_arg := i == node.args.len - 1
-		should_add_type := is_last_arg || node.args[i + 1].typ != arg.typ ||
-									(node.is_variadic && i == node.args.len - 2)
+		should_add_type := is_last_arg || node.args[i + 1].typ != arg.typ || (node.is_variadic && i == 
+			node.args.len - 2)
 		f.write(arg.name)
 		if should_add_type {
 			if node.is_variadic && is_last_arg {
 				f.write(' ...' + t.type_to_str(arg.typ))
-			}
-			else {
+			} else {
 				f.write(' ' + t.type_to_str(arg.typ))
 			}
 		}

vlib/v/fmt/tests/integer_literal_keep.vv

@@ -1,8 +1,3 @@
-import os
-
-fn foo(a []os.File) {
-}
-
 struct IfExpr {
 }
 

vlib/v/fmt/tests/struct_keep.vv

@@ -0,0 +1,22 @@
+import os
+
+fn foo(a []os.File) {
+}
+
+struct User {
+	age  int
+	name string
+}
+
+fn handle_users(users []User) {
+	println(users.len)
+}
+
+fn (u &User) foo(u2 &User) {
+}
+
+type Expr = IfExpr | IntegerLiteral
+
+fn exprs(e []Expr) {
+	println(e.len)
+}

vlib/v/table/atypes.v

@@ -613,7 +613,7 @@ pub fn (table &Table) type_to_str(t Type) string {
 		if vals.len > 2 {
 			res = vals[vals.len - 2] + '.' + vals[vals.len - 1]
 		}
-		if sym.kind == .array {
+		if sym.kind == .array && !res.starts_with('[]') {
 			res = '[]' + res
 		}
 	}