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c25bf0d959
Thanks to emmanuel@orijtech.com who wrote the initial version of this change (CL 354490). This change is following CL 354490 in idea but also contains various simplifications, slightly improved printing of signature/type patterns, adjustments for types2, and some fine-tuning of error positions. Also adjusted several ERROR regexp patterns. Fixes #48834. Fixes #48835. Change-Id: I31cf20c81753b1dc84836dbe83a39030ceb9db23 Reviewed-on: https://go-review.googlesource.com/c/go/+/364874 Trust: Robert Griesemer <gri@golang.org> Reviewed-by: Robert Findley <rfindley@google.com> Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
54 lines
2.0 KiB
Go
54 lines
2.0 KiB
Go
// errorcheck
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// Copyright 2016 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package main
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func foo() (int, int) {
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return 2.3 // ERROR "not enough return values\n\thave \(number\)\n\twant \(int, int\)|not enough arguments to return"
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}
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func foo2() {
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return int(2), 2 // ERROR "too many arguments to return\n\thave \(int, number\)\n\twant \(\)|return with value in function with no return type|no result values expected"
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}
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func foo3(v int) (a, b, c, d int) {
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if v >= 0 {
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return 1 // ERROR "not enough return values\n\thave \(number\)\n\twant \(int, int, int, int\)|not enough arguments to return"
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}
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return 2, 3 // ERROR "not enough return values\n\thave \(number, number\)\n\twant \(int, int, int, int\)|not enough arguments to return"
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}
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func foo4(name string) (string, int) {
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switch name {
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case "cow":
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return "moo" // ERROR "not enough return values\n\thave \(string\)\n\twant \(string, int\)|not enough arguments to return"
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case "dog":
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return "dog", 10, true // ERROR "too many return values\n\thave \(string, number, bool\)\n\twant \(string, int\)|too many arguments to return"
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case "fish":
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return "" // ERROR "not enough return values\n\thave \(string\)\n\twant \(string, int\)|not enough arguments to return"
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default:
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return "lizard", 10
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}
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}
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type S int
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type T string
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type U float64
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func foo5() (S, T, U) {
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if false {
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return "" // ERROR "not enough return values\n\thave \(string\)\n\twant \(S, T, U\)|not enough arguments to return"
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} else {
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ptr := new(T)
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return ptr // ERROR "not enough return values\n\thave \(\*T\)\n\twant \(S, T, U\)|not enough arguments to return"
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}
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return new(S), 12.34, 1 + 0i, 'r', true // ERROR "too many return values\n\thave \(\*S, number, number, number, bool\)\n\twant \(S, T, U\)|too many arguments to return"
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}
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func foo6() (T, string) {
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return "T", true, true // ERROR "too many return values\n\thave \(string, bool, bool\)\n\twant \(T, string\)|too many arguments to return"
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}
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