Rename scripts to build and add revive command as a new build tool command (#10942)

Co-authored-by: techknowlogick <techknowlogick@gitea.io>

vendor/github.com/mgechev/revive/rule/indent-error-flow.go

@@ -0,0 +1,78 @@
+package rule
+
+import (
+	"go/ast"
+	"go/token"
+
+	"github.com/mgechev/revive/lint"
+)
+
+// IndentErrorFlowRule lints given else constructs.
+type IndentErrorFlowRule struct{}
+
+// Apply applies the rule to given file.
+func (r *IndentErrorFlowRule) Apply(file *lint.File, _ lint.Arguments) []lint.Failure {
+	var failures []lint.Failure
+
+	onFailure := func(failure lint.Failure) {
+		failures = append(failures, failure)
+	}
+
+	w := lintElse{make(map[*ast.IfStmt]bool), onFailure}
+	ast.Walk(w, file.AST)
+	return failures
+}
+
+// Name returns the rule name.
+func (r *IndentErrorFlowRule) Name() string {
+	return "indent-error-flow"
+}
+
+type lintElse struct {
+	ignore    map[*ast.IfStmt]bool
+	onFailure func(lint.Failure)
+}
+
+func (w lintElse) Visit(node ast.Node) ast.Visitor {
+	ifStmt, ok := node.(*ast.IfStmt)
+	if !ok || ifStmt.Else == nil {
+		return w
+	}
+	if w.ignore[ifStmt] {
+		if elseif, ok := ifStmt.Else.(*ast.IfStmt); ok {
+			w.ignore[elseif] = true
+		}
+		return w
+	}
+	if elseif, ok := ifStmt.Else.(*ast.IfStmt); ok {
+		w.ignore[elseif] = true
+		return w
+	}
+	if _, ok := ifStmt.Else.(*ast.BlockStmt); !ok {
+		// only care about elses without conditions
+		return w
+	}
+	if len(ifStmt.Body.List) == 0 {
+		return w
+	}
+	shortDecl := false // does the if statement have a ":=" initialization statement?
+	if ifStmt.Init != nil {
+		if as, ok := ifStmt.Init.(*ast.AssignStmt); ok && as.Tok == token.DEFINE {
+			shortDecl = true
+		}
+	}
+	lastStmt := ifStmt.Body.List[len(ifStmt.Body.List)-1]
+	if _, ok := lastStmt.(*ast.ReturnStmt); ok {
+		extra := ""
+		if shortDecl {
+			extra = " (move short variable declaration to its own line if necessary)"
+		}
+		w.onFailure(lint.Failure{
+			Confidence: 1,
+			Node:       ifStmt.Else,
+			Category:   "indent",
+			Failure:    "if block ends with a return statement, so drop this else and outdent its block" + extra,
+		})
+	}
+	return w
+}