Reduced memory allocations

src/build/token/Token.go

@@ -1,6 +1,9 @@
 package token
 
-import "fmt"
+import (
+	"fmt"
+	"unsafe"
+)
 
 // Token represents a single element in a source file.
 // The characters that make up an identifier are grouped into a single token.
@@ -30,5 +33,5 @@ func (t *Token) Reset() {
 
 // Text returns the token text.
 func (t *Token) Text() string {
-	return string(t.Bytes)
+	return unsafe.String(unsafe.SliceData(t.Bytes), len(t.Bytes))
 }