first steps to a new evaluation engine

compiler/nimeval.nim

@@ -0,0 +1,33 @@
+#
+#
+#           The Nimrod Compiler
+#        (c) Copyright 2013 Andreas Rumpf
+#
+#    See the file "copying.txt", included in this
+#    distribution, for details about the copyright.
+#
+
+## exposes the Nimrod VM to clients.
+
+import
+  ast, modules, passes, passaux, condsyms, 
+  options, nimconf, lists, sem, semdata, llstream, vm
+
+proc execute*(program: string) =
+  passes.gIncludeFile = includeModule
+  passes.gImportModule = importModule
+  initDefines()
+  LoadConfigs(DefaultConfig)
+
+  initDefines()
+  DefineSymbol("nimrodvm")
+  when hasFFI: DefineSymbol("nimffi")
+  registerPass(verbosePass)
+  registerPass(semPass)
+  registerPass(vmPass)
+
+  appendStr(searchPaths, options.libpath)
+  compileSystemModule()
+  var m = makeStdinModule()
+  incl(m.flags, sfMainModule)
+  processModule(m, LLStreamOpen(program), nil)