feature: parser

main.go

@@ -1 +1,28 @@
 package main
+
+import (
+	"fmt"
+	"log"
+	"os"
+
+	"sfdl/parser"
+	"sfdl/scanner"
+)
+
+func main() {
+	if len(os.Args) < 2 {
+		fmt.Println("usage: sfdl <source-file>")
+		return
+	}
+
+	filename := os.Args[1]
+	sc, err := scanner.NewScannerFromFile(filename)
+	if err != nil {
+		log.Fatalf("open file failed: %v", err)
+	}
+
+	p := parser.NewParser(sc)
+	p.Parse()
+
+	fmt.Println("Parse OK.")
+}