From d17d7bdf4e3ba0e2458abcf8056e9b9ab824a04c Mon Sep 17 00:00:00 2001
From: Joyee Cheung <joyeec9h3@gmail.com>
Date: Sun, 2 Dec 2018 04:16:09 +0800
Subject: src: move version metadata into node_metadata{.h, .cc}

This patch moves the computation of version metadata from node.cc
into node_metadata{.h, .cc}, and creates a macro that can be
used to iterate over the available version keys (v8, uv, .etc).
This makes the code clearer as now we no longer need to add
all the headers in node.cc just to compute the versions, and
makes it easier to reuse the version definitions.

PR-URL: https://github.com/nodejs/node/pull/24774
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
---
 src/node_metadata.h | 57 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 src/node_metadata.h

(limited to 'src/node_metadata.h')

diff --git a/src/node_metadata.h b/src/node_metadata.h
new file mode 100644
index 0000000000..0f32fcf21d
--- /dev/null
+++ b/src/node_metadata.h
@@ -0,0 +1,57 @@
+#ifndef SRC_NODE_METADATA_H_
+#define SRC_NODE_METADATA_H_
+
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
+#include <string>
+
+namespace node {
+
+#define NODE_VERSIONS_KEYS_BASE(V)                                             \
+  V(node)                                                                      \
+  V(v8)                                                                        \
+  V(uv)                                                                        \
+  V(zlib)                                                                      \
+  V(ares)                                                                      \
+  V(modules)                                                                   \
+  V(nghttp2)                                                                   \
+  V(napi)
+
+#ifdef NODE_EXPERIMENTAL_HTTP
+#define NODE_VERSIONS_KEY_HTTP(V) V(llhttp)
+#else /* !NODE_EXPERIMENTAL_HTTP */
+#define NODE_VERSIONS_KEY_HTTP(V) V(http_parser)
+#endif /* NODE_EXPERIMENTAL_HTTP */
+
+#if HAVE_OPENSSL
+#define NODE_VERSIONS_KEY_CRYPTO(V) V(openssl)
+#else
+#define NODE_VERSIONS_KEY_CRYPTO(V)
+#endif
+
+#define NODE_VERSIONS_KEYS(V)                                                  \
+  NODE_VERSIONS_KEYS_BASE(V)                                                   \
+  NODE_VERSIONS_KEY_HTTP(V)                                                    \
+  NODE_VERSIONS_KEY_CRYPTO(V)
+
+class Metadata {
+ public:
+  struct Versions {
+    Versions();
+#define V(key) std::string key;
+    NODE_VERSIONS_KEYS(V)
+#undef V
+  };
+
+  Versions versions;
+};
+
+// Per-process global
+namespace per_process {
+extern Metadata metadata;
+}
+
+}  // namespace node
+
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+#endif  // SRC_NODE_METADATA_H_
-- 
cgit v1.2.3