Add exhaustivestruct linter (#1411)

* Add exhaustivestruct linter

* CHange load mode to types info

* Fix go.mod

Author: mbilski

go.mod

@@ -32,6 +32,7 @@ require (
 	github.com/maratori/testpackage v1.0.1
 	github.com/matoous/godox v0.0.0-20190911065817-5d6d842e92eb // v1.0
 	github.com/mattn/go-colorable v0.1.8
+	github.com/mbilski/exhaustivestruct v1.0.1
 	github.com/mitchellh/go-homedir v1.1.0
 	github.com/mitchellh/go-ps v1.0.0
 	github.com/moricho/tparallel v0.2.1
@@ -61,7 +62,7 @@ require (
 	github.com/ultraware/whitespace v0.0.4
 	github.com/uudashr/gocognit v1.0.1
 	github.com/valyala/quicktemplate v1.6.3
-	golang.org/x/tools v0.0.0-20200918232735-d647fc253266
+	golang.org/x/tools v0.0.0-20201001104356-43ebab892c4c
 	gopkg.in/yaml.v2 v2.3.0
 	honnef.co/go/tools v0.0.1-2020.1.6
 	mvdan.cc/gofumpt v0.0.0-20200802201014-ab5a8192947d

go.sum

@@ -0,0 +1,17 @@
+package golinters
+
+import (
+	"github.com/mbilski/exhaustivestruct/pkg/analyzer"
+	"golang.org/x/tools/go/analysis"
+
+	"github.com/golangci/golangci-lint/pkg/golinters/goanalysis"
+)
+
+func NewExhaustiveStruct() *goanalysis.Linter {
+	return goanalysis.NewLinter(
+		"exhaustivestruct",
+		"Checks if all struct's fields are initialized",
+		[]*analysis.Analyzer{analyzer.Analyzer},
+		nil,
+	).WithLoadMode(goanalysis.LoadModeTypesInfo)
+}

pkg/golinters/exhaustivestruct.go

@@ -317,6 +317,9 @@ func (m Manager) GetAllSupportedLinterConfigs() []*linter.Config {
 			WithPresets(linter.PresetStyle).
 			WithLoadForGoAnalysis().
 			WithURL("https://github.com/moricho/tparallel"),
+		linter.NewConfig(golinters.NewExhaustiveStruct()).
+			WithPresets(linter.PresetStyle).
+			WithURL("https://github.com/mbilski/exhaustivestruct"),
 		linter.NewConfig(golinters.NewErrorLint(errorlintCfg)).
 			WithPresets(linter.PresetBugs).
 			WithLoadForGoAnalysis().

pkg/lint/lintersdb/manager.go

@@ -0,0 +1,16 @@
+//args: -Eexhaustivestruct
+package testdata
+
+type Test struct {
+	A string
+	B int
+}
+
+var pass = Test{
+	A: "a",
+	B: 0,
+}
+
+var fail = Test{ // ERROR "B is missing in Test"
+	A: "a",
+}