Function checkAndReportInvalidTypesForOmitzero

tools/structfield/structfield.go:166–236

(structName, tagType, goFieldName string, fieldType ast.Expr, tokenPos token.Pos, pass *analysis.Pass)

}

func checkAndReportInvalidTypesForOmitzero(structName, tagType, goFieldName string, fieldType ast.Expr, tokenPos token.Pos, pass *analysis.Pass) bool {
	switch ft := fieldType.(type) {
	case *ast.StarExpr:
		// Check for *[]T where T is builtin - should be []T
		if arrType, ok := ft.X.(*ast.ArrayType); ok {
			if ident, ok := arrType.Elt.(*ast.Ident); ok && isBuiltinType(ident.Name) {
				const msg = "change the %q field type to %q in the struct %q"
				pass.Reportf(tokenPos, msg, goFieldName, "[]"+ident.Name, structName)
			} else if starExpr, ok := arrType.Elt.(*ast.StarExpr); ok {
				// Check for *[]*T - should be []*T
				if ident, ok := starExpr.X.(*ast.Ident); ok {
					const msg = "change the %q field type to %q in the struct %q"
					pass.Reportf(tokenPos, msg, goFieldName, "[]*"+ident.Name, structName)
				}
			} else {
				checkStructArrayType(structName, goFieldName, arrType, tokenPos, pass)
			}
			return true
		}
		// Check for *int and other pointers to builtin types
		if ident, ok := ft.X.(*ast.Ident); ok {
			if isBuiltinType(ident.Name) {
				const msg = `the %q field in struct %q uses "omitzero" with a primitive type; remove "omitzero" and use only "omitempty" for pointer primitive types"`
				pass.Reportf(tokenPos, msg, goFieldName, structName)
				return true
			}
		}
		// Check for *map - should be map
		if _, ok := ft.X.(*ast.MapType); ok {
			const msg = "change the %q field type to %q in the struct %q"
			pass.Reportf(tokenPos, msg, goFieldName, exprToString(ft.X), structName)
			return true
		}
		return true
	case *ast.MapType:
		return true
	case *ast.ArrayType:
		if tagType == "url" {
			const msg = "the %q field in struct %q uses unsupported omitzero tag for URL tags"
			pass.Reportf(tokenPos, msg, goFieldName, structName)
			return true
		}
		checkStructArrayType(structName, goFieldName, ft, tokenPos, pass)
		return true
	case *ast.Ident:
		if obj := pass.TypesInfo.ObjectOf(ft); obj != nil {
			switch obj.Type().Underlying().(type) {
			case *types.Struct:
				// For Struct - should be *Struct
				const msg = "change the %q field type to %q in the struct %q"
				pass.Reportf(tokenPos, msg, goFieldName, "*"+ft.Name, structName)
				return true
			case *types.Basic:
				if tagType == "url" {
					const msg = "the %q field in struct %q uses unsupported omitzero tag for URL tags"
					pass.Reportf(tokenPos, msg, goFieldName, structName)
					return true
				}