version 0.8.5: added Nimrod version of the compiler

rod/magicsys.nim

@@ -0,0 +1,88 @@
+#
+#
+#           The Nimrod Compiler
+#        (c) Copyright 2009 Andreas Rumpf
+#
+#    See the file "copying.txt", included in this
+#    distribution, for details about the copyright.
+#
+
+# Built-in types and compilerprocs are registered here.
+
+import 
+  ast, astalgo, nhashes, msgs, platform, nversion, times, idents, rodread
+
+var SystemModule*: PSym
+
+proc registerSysType*(t: PType)
+  # magic symbols in the system module:
+proc getSysType*(kind: TTypeKind): PType
+proc getCompilerProc*(name: string): PSym
+proc registerCompilerProc*(s: PSym)
+proc InitSystem*(tab: var TSymTab)
+proc FinishSystem*(tab: TStrTable)
+proc getSysSym*(name: string): PSym
+# implementation
+
+var 
+  gSysTypes: array[TTypeKind, PType]
+  compilerprocs: TStrTable
+
+proc registerSysType(t: PType) = 
+  if gSysTypes[t.kind] == nil: gSysTypes[t.kind] = t
+  
+proc newSysType(kind: TTypeKind, size: int): PType = 
+  result = newType(kind, systemModule)
+  result.size = size
+  result.align = size
+
+proc getSysSym(name: string): PSym = 
+  result = StrTableGet(systemModule.tab, getIdent(name))
+  if result == nil: rawMessage(errSystemNeeds, name)
+  if result.kind == skStub: loadStub(result)
+  
+proc sysTypeFromName(name: string): PType = 
+  result = getSysSym(name).typ
+
+proc getSysType(kind: TTypeKind): PType = 
+  result = gSysTypes[kind]
+  if result == nil: 
+    case kind
+    of tyInt: result = sysTypeFromName("int")
+    of tyInt8: result = sysTypeFromName("int8")
+    of tyInt16: result = sysTypeFromName("int16")
+    of tyInt32: result = sysTypeFromName("int32")
+    of tyInt64: result = sysTypeFromName("int64")
+    of tyFloat: result = sysTypeFromName("float")
+    of tyFloat32: result = sysTypeFromName("float32")
+    of tyFloat64: result = sysTypeFromName("float64")
+    of tyBool: result = sysTypeFromName("bool")
+    of tyChar: result = sysTypeFromName("char")
+    of tyString: result = sysTypeFromName("string")
+    of tyCstring: result = sysTypeFromName("cstring")
+    of tyPointer: result = sysTypeFromName("pointer")
+    of tyNil: result = newSysType(tyNil, ptrSize)
+    else: InternalError("request for typekind: " & $kind)
+    gSysTypes[kind] = result
+  if result.kind != kind: 
+    InternalError("wanted: " & $kind & " got: " & $result.kind)
+  if result == nil: InternalError("type not found: " & $kind)
+  
+proc getCompilerProc(name: string): PSym = 
+  var ident: PIdent
+  ident = getIdent(name, getNormalizedHash(name))
+  result = StrTableGet(compilerprocs, ident)
+  if result == nil: 
+    result = StrTableGet(rodCompilerProcs, ident)
+    if result != nil: 
+      strTableAdd(compilerprocs, result)
+      if result.kind == skStub: loadStub(result)
+  
+proc registerCompilerProc(s: PSym) = 
+  strTableAdd(compilerprocs, s)
+
+proc InitSystem(tab: var TSymTab) = nil
+proc FinishSystem(tab: TStrTable) = nil
+  
+initStrTable(compilerprocs)
+