support for objective C generation

doc/advopt.txt

@@ -1,4 +1,5 @@
 Advanced commands:
+  //compileToOC, oc         compile project to Objective C code
   //run                     run the project (with Tiny C backend; Linux only!)
   //pretty                  pretty print the inputfile
   //genDepend               generate a DOT file containing the

rod/commands.nim

@@ -26,8 +26,8 @@ proc processSwitch*(switch, arg: string, pass: TCmdlinePass, info: TLineInfo)
 # implementation
 
 const 
-  HelpMessage = "Nimrod Compiler Version $1 (" & compileDate & ") [$2: $3]" &
+  HelpMessage = "Nimrod Compiler Version $1 (" & compileDate & ") [$2: $3]\n" &
-      "\n" & "Copyright (c) 2004-2011 by Andreas Rumpf" & "\n"
+      "Copyright (c) 2004-2011 by Andreas Rumpf\n"
 
 const 
   Usage = """
@@ -70,6 +70,7 @@ Options:
         
   AdvancedUsage = """
 Advanced commands:
+  compileToOC, oc           compile project to Objective C code
   run                       run the project (with Tiny C backend; buggy!)
   pretty                    pretty print the inputfile
   genDepend                 generate a DOT file containing the

rod/extccomp.nim

@@ -270,6 +270,7 @@ proc initVars*() =
   for i in countup(low(CC), high(CC)): undefSymbol(CC[i].name)
   defineSymbol(CC[ccompiler].name)
   if gCmd == cmdCompileToCpp: cExt = ".cpp"
+  elif gCmd == cmdCompileToOC: cExt = ".m"
   addCompileOption(getConfigVar(CC[ccompiler].name & ".options.always"))
   addLinkOption(getConfigVar(CC[ccompiler].name & ".options.linker"))
   if len(ccompilerPath) == 0: 

rod/main.nim

@@ -192,6 +192,16 @@ proc MainCommand(cmd, filename: string) =
     gCmd = cmdCompileToC
     wantFile(filename)
     CommandCompileToC(filename)
+  of wCompileToCpp: 
+    extccomp.cExt = ".cpp"
+    gCmd = cmdCompileToCpp
+    wantFile(filename)
+    CommandCompileToC(filename)
+  of wCompileToOC, wOC:
+    extccomp.cExt = ".m"
+    gCmd = cmdCompileToOC
+    wantFile(filename)
+    CommandCompileToC(filename)
   of wRun:
     gCmd = cmdRun
     wantFile(filename)
@@ -200,10 +210,6 @@ proc MainCommand(cmd, filename: string) =
       CommandCompileToC(filename)
     else: 
       rawMessage(errInvalidCommandX, cmd)
-  of wCompileToCpp: 
-    gCmd = cmdCompileToCpp
-    wantFile(filename)
-    CommandCompileToC(filename)
   of wCompileToEcmaScript, wJs: 
     gCmd = cmdCompileToEcmaScript
     wantFile(filename)

rod/options.nim

@@ -1,7 +1,7 @@
 #
 #
 #           The Nimrod Compiler
-#        (c) Copyright 2010 Andreas Rumpf
+#        (c) Copyright 2011 Andreas Rumpf
 #
 #    See the file "copying.txt", included in this
 #    distribution, for details about the copyright.
@@ -43,8 +43,8 @@ type                          # please make sure we have under 32 options
     optNoMain                 # do not generate a "main" proc
   TGlobalOptions* = set[TGlobalOption]
   TCommands* = enum           # Nimrod's commands
-    cmdNone, cmdCompileToC, cmdCompileToCpp, cmdCompileToEcmaScript, 
+    cmdNone, cmdCompileToC, cmdCompileToCpp, cmdCompileToOC, 
-    cmdCompileToLLVM, cmdInterpret, cmdPretty, cmdDoc, 
+    cmdCompileToEcmaScript, cmdCompileToLLVM, cmdInterpret, cmdPretty, cmdDoc, 
     cmdGenDepend, cmdListDef, cmdCheck, # semantic checking for whole project
     cmdParse,                 # parse a single file (for debugging)
     cmdScan,                  # scan a single file (for debugging)

rod/wordrecg.nim

@@ -54,8 +54,10 @@ type
     wSymbolFiles, wFieldChecks, wX, wVersion, wAdvanced, wSkipcfg, wSkipProjCfg, 
     wCc, wGenscript, wCheckPoint, wCheckPoints, wNoMain, wSubsChar, 
     wAcyclic, wIndex, 
-    wCompileToC, wCompileToCpp, wCompileToEcmaScript, wCompileToLLVM, wPretty, 
+    wCompileToC, wCompileToCpp, wCompileToEcmaScript, wCompileToLLVM, 
-    wDoc, wGenDepend, wListDef, wCheck, wParse, wScan, wJs, 
+    wCompileToOC,
+    wPretty, 
+    wDoc, wGenDepend, wListDef, wCheck, wParse, wScan, wJs, wOC, 
     wRst2html, wRst2tex, wI,
     wWrite, wPutEnv, wPrependEnv, wAppendEnv, wThreadVar, wEmit
     
@@ -102,8 +104,9 @@ const
     "skipcfg", "skipprojcfg", "cc", "genscript", "checkpoint", "checkpoints", 
     "nomain", "subschar", "acyclic", "index", 
     "compiletoc", "compiletocpp", "compiletoecmascript", "compiletollvm", 
+    "compiletooc",
     "pretty", "doc", "gendepend", "listdef", "check", "parse", "scan", 
-    "js", "rst2html", "rst2tex", "i", 
+    "js", "oc", "rst2html", "rst2tex", "i", 
     "write", "putenv", "prependenv", "appendenv", "threadvar", "emit"]
 
 proc whichKeyword*(id: PIdent): TSpecialWord

todo.txt

@@ -1,5 +1,4 @@
 - we need a way to disable tests
-- {.extern: "thisfile.m".} pragma for objective C/C++ support
 - deprecate ^ and make it available as operator