1 files changed, 44 insertions, 0 deletions
diff --git a/compiler/macrocacheimpl.nim b/compiler/macrocacheimpl.nim
new file mode 100644
index 000000000..c869c2289
--- /dev/null
+++ b/compiler/macrocacheimpl.nim
@@ -0,0 +1,44 @@
+#
+#
+#           The Nim Compiler
+#        (c) Copyright 2018 Andreas Rumpf
+#
+#    See the file "copying.txt", included in this
+#    distribution, for details about the copyright.
+#
+
+## This module implements helpers for the macro cache.
+
+import lineinfos, ast, vmdef
+
+proc append(c: PCtx; n: PNode) =
+  c.vmstateDiff.add((c.module, n))
+
+proc recordInc*(c: PCtx; info: TLineInfo; key: string; by: BiggestInt) =
+  var recorded = newNodeI(nkReplayAction, info)
+  recorded.add newStrNode("inc", info)
+  recorded.add newStrNode(key, info)
+  recorded.add newIntNode(nkIntLit, by)
+  c.append(recorded)
+
+proc recordPut*(c: PCtx; info: TLineInfo; key: string; k: string; val: PNode) =
+  var recorded = newNodeI(nkReplayAction, info)
+  recorded.add newStrNode("put", info)
+  recorded.add newStrNode(key, info)
+  recorded.add newStrNode(k, info)
+  recorded.add copyTree(val)
+  c.append(recorded)
+
+proc recordAdd*(c: PCtx; info: TLineInfo; key: string; val: PNode) =
+  var recorded = newNodeI(nkReplayAction, info)
+  recorded.add newStrNode("add", info)
+  recorded.add newStrNode(key, info)
+  recorded.add copyTree(val)
+  c.append(recorded)
+
+proc recordIncl*(c: PCtx; info: TLineInfo; key: string; val: PNode) =
+  var recorded = newNodeI(nkReplayAction, info)
+  recorded.add newStrNode("incl", info)
+  recorded.add newStrNode(key, info)
+  recorded.add copyTree(val)
+  c.append(recorded)