Organize members, tweak eof

src/parser.h

@@ -99,7 +99,6 @@ struct Parser2 {
   static constexpr int kMaxStackSize = 1 << 10;
 
 private:
-  bool complete = false;
   // Helpers
   void maybeSkipWs() {
     while (buf != bufEnd && tables.whitespace[*buf]) {
@@ -389,10 +388,10 @@ private:
     MUSTTAIL return keepGoing(self);
   }
   static Status eof(Parser2 *self) {
-    if (self->complete) {
-      return S_OK;
+    if (self->len() > 0) {
+      return S_REJECT;
     }
-    return S_REJECT;
+    return self->complete ? S_OK : S_AGAIN;
   }
 
   static constexpr continuation table[] = {
@@ -420,13 +419,6 @@ private:
 
   static_assert(sizeof(table) / sizeof(table[0]) == N_PAST_END);
 
-  char *buf = nullptr;
-  char *bufEnd = nullptr;
-  int len() const { return bufEnd - buf; }
-  const Callbacks *const callbacks;
-  void *const data;
-  Symbol stack[kMaxStackSize];
-  Symbol *stackPtr = stack;
   bool empty() const { return stackPtr == stack; }
   void pop() {
     assert(!empty());
@@ -441,4 +433,17 @@ private:
     }
     return S_OK;
   }
+  int len() const {
+    auto result = bufEnd - buf;
+    assert(result >= 0);
+    return result;
+  }
+
+  char *buf = nullptr;
+  char *bufEnd = nullptr;
+  const Callbacks *const callbacks;
+  void *const data;
+  Symbol stack[kMaxStackSize];
+  Symbol *stackPtr = stack;
+  bool complete = false;
 };