holy carp it parses

main.go

@@ -29,10 +29,10 @@ func runFile(filename string) {
 	bs, err := os.ReadFile(filename)
 	if err != nil {
 		fmt.Printf("unable to read file '%s':\n\t%s", filename, err.Error())
-		os.Exit(1)
+		os.Exit(64)
 	}
 
-	if run(string(bs)) {
+	if !run(string(bs)) {
 		os.Exit(65)
 	}
 }
@@ -59,20 +59,33 @@ func run(source string) bool {
 	s := newScanner(source)
 	tokens, ok := s.ScanTokens()
 	if !ok {
-		return true
+		return false
 	}
 
-	for _, token := range tokens {
-		fmt.Println(token)
+	p := newParser(tokens)
+	expr, err := p.Parse()
+	if err != nil {
+		return false
 	}
 
-	return false
+	printer := &astPrinter{}
+	fmt.Println(printer.print(expr))
+
+	return true
 }
 
 func reportErr(line int, message string) {
 	report(line, "", message)
 }
 
+func reportSyntaxError(token *token, message string) {
+	if token.Type == tokenTypeEOF {
+		report(token.Line, "at EOF", message)
+	} else {
+		report(token.Line, "at \""+token.Lexeme+"\"", message)
+	}
+}
+
 func report(line int, where, message string) {
 	fmt.Printf("[line %d] Error%s: %s\n", line, where, message)
 }