feat: Parse a file every time a single linter rule runs

_example/proto/issue_111/multiple_fixers_applicable.proto

@@ -0,0 +1,14 @@
+syntax = "proto3";
+enum enumAllowingAlias {
+    UNKNOWN = 0;
+        option allow_alias = true;
+    STARTED = 1;
+        RUNNING = 2 [(custom_option) = "hello world"];
+}
+
+enum enumAllowingAlias2 {
+    UNKNOWN = 0;
+    option allow_alias = true;
+    STARTED = 1;
+    RUNNING = 2 [(custom_option) = "hello world"];
+}

internal/cmd/subcmds/lint/cmdLint.go

@@ -6,6 +6,8 @@ import (
 	"log"
 	"os"
 
+	"github.com/yoheimuta/go-protoparser/v4/parser"
+
 	"github.com/yoheimuta/protolint/internal/linter/config"
 
 	"github.com/yoheimuta/protolint/internal/linter"
@@ -128,13 +130,14 @@ func (c *CmdLint) runOneFile(
 		return []report.Failure{}, nil
 	}
 
-	proto, err := f.Parse(c.config.verbose)
-	if err != nil {
-		if c.config.verbose {
-			return nil, ParseError{Message: err.Error()}
+	return c.l.Run(func() (*parser.Proto, error) {
+		proto, err := f.Parse(c.config.verbose)
+		if err != nil {
+			if c.config.verbose {
+				return nil, ParseError{Message: err.Error()}
+			}
+			return nil, ParseError{Message: fmt.Sprintf("%s. Use -v for more details", err)}
 		}
-		return nil, ParseError{Message: fmt.Sprintf("%s. Use -v for more details", err)}
-	}
-
-	return c.l.Run(proto, rs)
+		return proto, nil
+	}, rs)
 }

internal/linter/linter.go

@@ -17,12 +17,17 @@ func NewLinter() *Linter {
 
 // Run lints the protocol buffer.
 func (l *Linter) Run(
-	proto *parser.Proto,
+	genProto func() (*parser.Proto, error),
 	hasApplies []rule.HasApply,
 ) ([]report.Failure, error) {
 	var fs []report.Failure
 	for _, hasApply := range hasApplies {
-		f, err := hasApply.Apply(proto)
+		p, err := genProto()
+		if err != nil {
+			return nil, err
+		}
+
+		f, err := hasApply.Apply(p)
 		if err != nil {
 			return nil, err
 		}