feat: Support UInt64, Int64

Author: DanSnow

src/binary_parser/macros/int64.cr

@@ -0,0 +1,24 @@
+class BinaryParser
+
+  # Declare a int64 field
+  #
+  # ```crystal
+  # int64 :value # name of field
+  # ```
+  macro int64(name)
+    property! :{{name.id}}
+    @{{name.id}} = 0i64
+
+    def _read_{{name.id}}(io : IO)
+      @{{name.id}} = io.not_nil!.read_bytes(Int64).as(Int64)
+    end
+
+    def _write_{{name.id}}(io : IO)
+      io.not_nil!.write_bytes(@{{name.id}}.not_nil!)
+    end
+
+    def _size_static_{{name.id}}
+      sizeof(Int64)
+    end
+  end
+end

src/binary_parser/macros/uint64.cr

@@ -0,0 +1,24 @@
+class BinaryParser
+
+  # Declare a uint64 field
+  #
+  # ```crystal
+  # uint64 :value # name of field
+  # ```
+  macro uint64(name)
+    property! :{{name.id}}
+    @{{name.id}} = 0u64
+
+    def _read_{{name.id}}(io : IO)
+      @{{name.id}} = io.not_nil!.read_bytes(UInt64).as(UInt64)
+    end
+
+    def _write_{{name.id}}(io : IO)
+      io.not_nil!.write_bytes(@{{name.id}}.not_nil!)
+    end
+
+    def _size_static_{{name.id}}
+      sizeof(UInt64)
+    end
+  end
+end