Remove --debug option from compile command

cmd/maleeni/compile.go

@@ -5,7 +5,6 @@ import (
 	"fmt"
 	"io/ioutil"
 	"os"
-	"time"
 
 	"github.com/nihei9/maleeni/compiler"
 	"github.com/nihei9/maleeni/spec"
@@ -27,7 +26,6 @@ func init() {
 		Example: `  cat lexspec.json | maleeni compile > clexspec.json`,
 		RunE:    runCompile,
 	}
-	compileFlags.debug = cmd.Flags().BoolP("debug", "d", false, "enable logging")
 	compileFlags.lexSpec = cmd.Flags().StringP("lex-spec", "l", "", "lexical specification file path (default stdin)")
 	compileFlags.compLv = cmd.Flags().Int("compression-level", compiler.CompressionLevelMax, "compression level")
 	compileFlags.output = cmd.Flags().StringP("output", "o", "", "output file path (default stdout)")
@@ -40,33 +38,7 @@ func runCompile(cmd *cobra.Command, args []string) (retErr error) {
 		return fmt.Errorf("Cannot read a lexical specification: %w", err)
 	}
 
-	opts := []compiler.CompilerOption{
-		compiler.CompressionLevel(*compileFlags.compLv),
-	}
-	if *compileFlags.debug {
-		fileName := "maleeni-compile.log"
-		f, err := os.OpenFile(fileName, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
-		if err != nil {
-			return fmt.Errorf("Cannot open the log file %s: %w", fileName, err)
-		}
-		defer f.Close()
-		fmt.Fprintf(f, `maleeni compile starts.
-Date time: %v
----
-`, time.Now().Format(time.RFC3339))
-		defer func() {
-			fmt.Fprintf(f, "---\n")
-			if retErr != nil {
-				fmt.Fprintf(f, "maleeni compile failed: %v\n", retErr)
-			} else {
-				fmt.Fprintf(f, "maleeni compile succeeded.\n")
-			}
-		}()
-
-		opts = append(opts, compiler.EnableLogging(f))
-	}
-
-	clspec, err := compiler.Compile(lspec, opts...)
+	clspec, err := compiler.Compile(lspec, compiler.CompressionLevel(*compileFlags.compLv))
 	if err != nil {
 		return err
 	}

compiler/compiler.go

@@ -2,27 +2,13 @@ package compiler
 
 import (
 	"fmt"
-	"io"
-	"strings"
 
 	"github.com/nihei9/maleeni/compressor"
-	"github.com/nihei9/maleeni/log"
 	"github.com/nihei9/maleeni/spec"
 )
 
 type CompilerOption func(c *compilerConfig) error
 
-func EnableLogging(w io.Writer) CompilerOption {
-	return func(c *compilerConfig) error {
-		logger, err := log.NewLogger(w)
-		if err != nil {
-			return err
-		}
-		c.logger = logger
-		return nil
-	}
-}
-
 func CompressionLevel(lv int) CompilerOption {
 	return func(c *compilerConfig) error {
 		if lv < CompressionLevelMin || lv > CompressionLevelMax {
@@ -34,7 +20,6 @@ func CompressionLevel(lv int) CompilerOption {
 }
 
 type compilerConfig struct {
-	logger log.Logger
 	compLv int
 }
 
@@ -44,9 +29,7 @@ func Compile(lexspec *spec.LexSpec, opts ...CompilerOption) (*spec.CompiledLexSp
 		return nil, fmt.Errorf("invalid lexical specification:\n%w", err)
 	}
 
-	config := &compilerConfig{
-		logger: log.NewNopLogger(),
-	}
+	config := &compilerConfig{}
 	for _, opt := range opts {
 		err := opt(config)
 		if err != nil {
@@ -61,7 +44,6 @@ func Compile(lexspec *spec.LexSpec, opts ...CompilerOption) (*spec.CompiledLexSp
 	}
 	for i, es := range modeEntries[1:] {
 		modeName := modeNames[i+1]
-		config.logger.Log("Compile %v mode:", modeName)
 		modeSpec, err := compile(es, modeName2ID, fragmetns, config)
 		if err != nil {
 			return nil, fmt.Errorf("failed to compile in %v mode: %w", modeName, err)
@@ -167,11 +149,6 @@ func compile(entries []*spec.LexEntry, modeName2ID map[spec.LexModeName]spec.Lex
 			kindNames = append(kindNames, e.Kind)
 			patterns[spec.LexModeKindID(i+1)] = []byte(e.Pattern)
 		}
-
-		config.logger.Log("Patterns:")
-		for i, p := range patterns {
-			config.logger.Log("  #%v %v", i, string(p))
-		}
 	}
 
 	push := []spec.LexModeID{
@@ -217,10 +194,6 @@ func compile(entries []*spec.LexEntry, modeName2ID map[spec.LexModeName]spec.Lex
 		if err != nil {
 			return nil, err
 		}
-
-		var b strings.Builder
-		printAST(&b, root, "", "", false)
-		config.logger.Log("AST:\n%v", b.String())
 	}
 
 	var tranTab *spec.TransitionTable
@@ -231,14 +204,6 @@ func compile(entries []*spec.LexEntry, modeName2ID map[spec.LexModeName]spec.Lex
 		if err != nil {
 			return nil, err
 		}
-
-		config.logger.Log(`DFA:
-  States: %v states (%v entries)
-  Initial State ID: %v`, tranTab.RowCount, tranTab.RowCount*tranTab.ColCount, tranTab.InitialStateID)
-		config.logger.Log("  Accepting States:")
-		for state, symbol := range tranTab.AcceptingStates {
-			config.logger.Log("    %v: %v", state, symbol)
-		}
 	}
 
 	var err error