WIP

Signed-off-by: Alejandro Mery <amery@jpi.io>

lexer/lexer.go

@@ -0,0 +1,17 @@
+// Package lexer provides basic helpers to implement parsers
+package lexer
+
+// StateFn is a State Function of the parser
+type StateFn func() (StateFn, error)
+
+// Run runs a state machine until the state function either
+// returns nil or an error
+func Run(fn StateFn) error {
+	var err error
+
+	for fn != nil && err == nil {
+		fn, err = fn()
+	}
+
+	return err
+}

runes/reader.go

@@ -9,7 +9,7 @@ import (
 
 const (
 	// ReadBufferSize indicates the initial buffer size
-	ReadBufferSize = 1 << 7 // 128B
+	ReadBufferSize = 2 // 1 << 7 // 128B
 
 	// DoublingBufferSizeLimit indicates when we stop doubling
 	// and just add instead