aboutsummaryrefslogtreecommitdiff
path: root/repl/repl.go
diff options
context:
space:
mode:
Diffstat (limited to 'repl/repl.go')
-rw-r--r--repl/repl.go30
1 files changed, 30 insertions, 0 deletions
diff --git a/repl/repl.go b/repl/repl.go
new file mode 100644
index 0000000..337be46
--- /dev/null
+++ b/repl/repl.go
@@ -0,0 +1,30 @@
+package repl
+
+import (
+ "bufio"
+ "fmt"
+ "io"
+ "monkey/lexer"
+ "monkey/token"
+)
+
+const PROMPT = ">> "
+
+func Start(in io.Reader, out io.Writer) {
+ scanner := bufio.NewScanner(in)
+
+ for {
+ fmt.Printf(PROMPT)
+ scanned := scanner.Scan()
+ if !scanned {
+ return
+ }
+
+ line := scanner.Text()
+ l := lexer.New(line)
+
+ for tok := l.NextToken(); tok.Type != token.EOF; tok = l.NextToken() {
+ fmt.Printf("%+v\n", tok)
+ }
+ }
+}