Upgrade Go compiler to v1.19

.github/workflows/test.yml

@@ -8,26 +8,25 @@ on:
 
 jobs:
 
-  build:
+  test:
+    name: go test
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
-
-    - name: Set up Go
-      uses: actions/setup-go@v2
+    - uses: actions/checkout@v3
+    - uses: actions/setup-go@v3
       with:
-        go-version: 1.16
-
-    - name: Test
-      run: go test -v ./...
+        go-version: 1.19
+    - run: go test -v ./...
 
-  golangci:
-    name: lint
+  lint:
+    name: golangci-lint
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
-    - name: golangci-lint
-      uses: golangci/golangci-lint-action@v2
+    - uses: actions/checkout@v3
+    - uses: actions/setup-go@v3
+      with:
+        go-version: 1.19
+    - uses: golangci/golangci-lint-action@v3
       with:
         version: latest
         args: -E gofmt

cmd/vartan-go/generate.go

@@ -3,7 +3,7 @@ package main
 import (
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"os"
 
 	mldriver "github.com/nihei9/maleeni/driver"
@@ -109,7 +109,7 @@ func readCompiledGrammar(path string) (*spec.CompiledGrammar, error) {
 	if err != nil {
 		return nil, err
 	}
-	data, err := ioutil.ReadAll(f)
+	data, err := io.ReadAll(f)
 	if err != nil {
 		return nil, err
 	}

cmd/vartan/compile.go

@@ -4,7 +4,6 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 
@@ -67,13 +66,13 @@ func runCompile(cmd *cobra.Command, args []string) (retErr error) {
 			return err
 		}
 
-		src, err := ioutil.ReadAll(os.Stdin)
+		src, err := io.ReadAll(os.Stdin)
 		if err != nil {
 			return err
 		}
 
 		grmPath = filepath.Join(tmpDirPath, "stdin.vartan")
-		err = ioutil.WriteFile(grmPath, src, 0600)
+		err = os.WriteFile(grmPath, src, 0600)
 		if err != nil {
 			return err
 		}
@@ -135,14 +134,14 @@ func readGrammar(path string) (grm *grammar.Grammar, retErr error) {
 // writeCompiledGrammarAndReport writes a compiled grammar and a report to a files located at a specified path.
 // This function selects one of the following output methods depending on how the path is specified.
 //
-// 1. When the path is a directory path, this function writes the compiled grammar and the report to
-//    <path>/<grammar-name>.json and <path>/<grammar-name>-report.json files, respectively.
-//    <grammar-name>-report.json as the output files.
-// 2. When the path is a file path or a non-exitent path, this function asumes that the path represents a file
-//    path for the compiled grammar. Then it also writes the report in the same directory as the compiled grammar.
-//    The report file is named <grammar-name>.json.
-// 3. When the path is an empty string, this function writes the compiled grammar to the stdout and writes
-//    the report to a file named <current-directory>/<grammar-name>-report.json.
+//  1. When the path is a directory path, this function writes the compiled grammar and the report to
+//     <path>/<grammar-name>.json and <path>/<grammar-name>-report.json files, respectively.
+//     <grammar-name>-report.json as the output files.
+//  2. When the path is a file path or a non-exitent path, this function asumes that the path represents a file
+//     path for the compiled grammar. Then it also writes the report in the same directory as the compiled grammar.
+//     The report file is named <grammar-name>.json.
+//  3. When the path is an empty string, this function writes the compiled grammar to the stdout and writes
+//     the report to a file named <current-directory>/<grammar-name>-report.json.
 func writeCompiledGrammarAndReport(cgram *spec.CompiledGrammar, report *spec.Report, path string) error {
 	cgramPath, reportPath, err := makeOutputFilePaths(cgram.Name, path)
 	if err != nil {

cmd/vartan/parse.go

@@ -3,7 +3,7 @@ package main
 import (
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"os"
 	"strings"
 
@@ -150,7 +150,7 @@ func readCompiledGrammar(path string) (*spec.CompiledGrammar, error) {
 	if err != nil {
 		return nil, err
 	}
-	data, err := ioutil.ReadAll(f)
+	data, err := io.ReadAll(f)
 	if err != nil {
 		return nil, err
 	}

cmd/vartan/show.go

@@ -4,7 +4,6 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"os"
 	"strings"
 	"text/template"
@@ -46,7 +45,7 @@ func readReport(path string) (*spec.Report, error) {
 	}
 	defer f.Close()
 
-	d, err := ioutil.ReadAll(f)
+	d, err := io.ReadAll(f)
 	if err != nil {
 		return nil, err
 	}

go.mod

@@ -1,8 +1,13 @@
 module github.com/nihei9/vartan
 
-go 1.16
+go 1.19
 
 require (
 	github.com/nihei9/maleeni v0.6.1
 	github.com/spf13/cobra v1.4.0
 )
+
+require (
+	github.com/inconshreveable/mousetrap v1.0.0 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
+)