Merge pull request #2202 from def-/compile-stdin

Make compiler read files from stdin

compiler/main.nim

@@ -62,7 +62,7 @@ proc commandCompileToC =
   compileProject()
   cgenWriteModules()
   if gCmd != cmdRun:
-    extccomp.callCCompiler(changeFileExt(gProjectFull, ""))
+    extccomp.callCCompiler(if gProjectName == "-": "stdinfile" else: changeFileExt(gProjectFull, ""))
 
   if isServing:
     # caas will keep track only of the compilation commands

compiler/modules.nim

@@ -116,7 +116,7 @@ proc newModule(fileIdx: int32): PSym =
   result.kind = skModule
   let filename = fileIdx.toFullPath
   result.name = getIdent(splitFile(filename).name)
-  if not isNimIdentifier(result.name.s):
+  if result.name.s != "-" and not isNimIdentifier(result.name.s):
     rawMessage(errInvalidModuleName, result.name.s)
   
   result.info = newLineInfo(fileIdx, 1, 1)

compiler/nim.nim

@@ -61,6 +61,8 @@ proc handleCmdLine() =
         if gCmd == cmdRun:
           tccgen.run(commands.arguments)
       if optRun in gGlobalOptions:
+        if gProjectName == "-":
+          gProjectFull = "stdinfile"
         if gCmd == cmdCompileToJS:
           var ex: string
           if options.outFile.len > 0:

compiler/passes.nim

@@ -170,7 +170,11 @@ proc processModule(module: PSym, stream: PLLStream, rd: PRodReader) =
     openPasses(a, module)
     if stream == nil: 
       let filename = fileIdx.toFullPathConsiderDirty
-      s = llStreamOpen(filename, fmRead)
+      if module.name.s == "-":
+        module.name.s = "stdinfile"
+        s = llStreamOpen(stdin)
+      else:
+        s = llStreamOpen(filename, fmRead)
       if s == nil: 
         rawMessage(errCannotOpenFile, filename)
         return

compiler/service.nim

@@ -33,7 +33,12 @@ proc processCmdLine*(pass: TCmdLinePass, cmd: string) =
     parseopt.next(p)
     case p.kind
     of cmdEnd: break
-    of cmdLongoption, cmdShortOption: processSwitch(pass, p)
+    of cmdLongoption, cmdShortOption:
+      if p.key == " ":
+        p.key = "-"
+        if processArgument(pass, p, argsCount): break
+      else:
+        processSwitch(pass, p)
     of cmdArgument:
       if processArgument(pass, p, argsCount): break
   if pass == passCmd2: