From 7a64e86e58bca7456ca9b1ff9b5759af0befa184 Mon Sep 17 00:00:00 2001
From: Nicolas Noble <pixel@nobis-crew.org>
Date: Wed, 7 Aug 2013 17:08:00 -0700
Subject: Adding the rest of the helpers, and simplifying their
 implementations.

---
 src/Handle.cc | 63 +++++++++++++++++++++++++++--------------------------------
 1 file changed, 29 insertions(+), 34 deletions(-)

(limited to 'src/Handle.cc')

diff --git a/src/Handle.cc b/src/Handle.cc
index 2a03f8c..1a5255d 100644
--- a/src/Handle.cc
+++ b/src/Handle.cc
@@ -95,54 +95,49 @@ ssize_t Balau::Handle::forceWrite(const void * _buf, size_t count, Events::BaseE
     return total;
 }
 
-Balau::Future<uint8_t> Balau::Handle::readU8() {
-    IO<Handle> t(this);
-    std::shared_ptr<uint8_t> b(new uint8_t);
-    return Future<uint8_t>([t, b]() mutable {
-        t->read(b.get(), 1);
-        return *b;
-    });
-}
-
-Balau::Future<uint16_t> Balau::Handle::readU16() {
-    IO<Handle> t(this);
-    std::shared_ptr<uint16_t> b(new uint16_t);
+template<class T>
+Balau::Future<T> genericRead(Balau::IO<Balau::Handle> t) {
+    std::shared_ptr<T> b(new T);
     int c = 0;
-    return Future<uint16_t>([t, b, c]() mutable {
+    return Balau::Future<T>([t, b, c]() mutable {
         do {
-            int r = t->read(((uint8_t *) b.get()) + c, 2);
+            int r = t->read(((uint8_t *) b.get()) + c, sizeof(T));
             c += r;
-        } while (c < 2);
+        } while (c < sizeof(T));
         return *b;
     });
 }
 
-Balau::Future<uint32_t> Balau::Handle::readU32() {
-    IO<Handle> t(this);
-    std::shared_ptr<uint32_t> b(new uint32_t);
-    int c = 0;
-    return Future<uint32_t>([t, b, c]() mutable {
-        do {
-            int r = t->read(((uint8_t *) b.get()) + c, 4);
-            c += r;
-        } while (c < 4);
-        return *b;
-    });
-}
+Balau::Future<uint8_t>  Balau::Handle::readU8 () { return genericRead<uint8_t >(this); }
+Balau::Future<uint16_t> Balau::Handle::readU16() { return genericRead<uint16_t>(this); }
+Balau::Future<uint32_t> Balau::Handle::readU32() { return genericRead<uint32_t>(this); }
+Balau::Future<uint64_t> Balau::Handle::readU64() { return genericRead<uint64_t>(this); }
+Balau::Future<int8_t>   Balau::Handle::readI8 () { return genericRead<int8_t>  (this); }
+Balau::Future<int16_t>  Balau::Handle::readI16() { return genericRead<int16_t> (this); }
+Balau::Future<int32_t>  Balau::Handle::readI32() { return genericRead<int32_t> (this); }
+Balau::Future<int64_t>  Balau::Handle::readI64() { return genericRead<int64_t> (this); }
 
-Balau::Future<uint64_t> Balau::Handle::readU64() {
-    IO<Handle> t(this);
-    std::shared_ptr<uint64_t> b(new uint64_t);
+template<class T>
+Balau::Future<void> genericWrite(Balau::IO<Balau::Handle> t, T val) {
+    std::shared_ptr<T> b(new T(val));
     int c = 0;
-    return Future<uint64_t>([t, b, c]() mutable {
+    return Balau::Future<void>([t, b, c]() mutable {
         do {
-            int r = t->read(((uint8_t *) b.get()) + c, 8);
+            int r = t->write(((uint8_t *) b.get()) + c, sizeof(T));
             c += r;
-        } while (c < 8);
-        return *b;
+        } while (c < sizeof(T));
     });
 }
 
+Balau::Future<void> Balau::Handle::writeU8 (uint8_t  v) { return genericWrite<uint8_t >(this, v); }
+Balau::Future<void> Balau::Handle::writeU16(uint16_t v) { return genericWrite<uint16_t>(this, v); }
+Balau::Future<void> Balau::Handle::writeU32(uint32_t v) { return genericWrite<uint32_t>(this, v); }
+Balau::Future<void> Balau::Handle::writeU64(uint64_t v) { return genericWrite<uint64_t>(this, v); }
+Balau::Future<void> Balau::Handle::writeI8 (int8_t   v) { return genericWrite<int8_t  >(this, v); }
+Balau::Future<void> Balau::Handle::writeI16(int16_t  v) { return genericWrite<int16_t >(this, v); }
+Balau::Future<void> Balau::Handle::writeI32(int32_t  v) { return genericWrite<int32_t >(this, v); }
+Balau::Future<void> Balau::Handle::writeI64(int64_t  v) { return genericWrite<int64_t >(this, v); }
+
 void Balau::Handle::rseek(off_t offset, int whence) throw (GeneralException) {
     if (canSeek())
         throw GeneralException(String("Handle ") + getName() + " can seek, but rseek() not implemented (missing in class " + ClassName(this).c_str() + ")");
-- 
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