From 7ad1a8b4b40784e0a10bd453c75dd0dcf123d5f1 Mon Sep 17 00:00:00 2001
From: "John Hodge (bugs)" <tpg@mutabah.net>
Date: Sat, 22 Nov 2014 23:36:20 +0800
Subject: Initial commit, lexer structurally complete, parsing hacking up

---
 parse/preproc.cpp | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 parse/preproc.cpp

(limited to 'parse/preproc.cpp')

diff --git a/parse/preproc.cpp b/parse/preproc.cpp
new file mode 100644
index 00000000..ec64d731
--- /dev/null
+++ b/parse/preproc.cpp
@@ -0,0 +1,50 @@
+#include "preproc.hpp"
+#include <iostream>
+
+Preproc::Preproc(::std::string path):
+    m_cache_valid(false),
+    m_lex(path)
+{
+    //ctor
+}
+
+Preproc::~Preproc()
+{
+    //dtor
+}
+
+Token Preproc::getTokenInt()
+{
+    while(true)
+    {
+        Token tok = m_lex.getToken();
+        ::std::cout << "getTokenInt: tok = " << tok << ::std::endl;
+        switch(tok.type())
+        {
+        case TOK_WHITESPACE:
+            continue;
+        case TOK_COMMENT:
+            continue;
+        default:
+            return tok;
+        }
+    }
+}
+
+Token Preproc::getToken()
+{
+    if( m_cache_valid )
+    {
+        m_cache_valid = false;
+        return m_cache;
+    }
+    else
+    {
+        return this->getTokenInt();
+    }
+}
+void Preproc::putback(Token tok)
+{
+    m_cache_valid = true;
+    m_cache = tok;
+}
-- 
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