nimfix handles helloworld

compiler/astalgo.nim

@@ -626,6 +626,12 @@ proc strTableAdd(t: var TStrTable, n: PSym) =
   strTableRawInsert(t.data, n)
   inc(t.counter)
 
+proc reallySameIdent(a, b: string): bool {.inline.} =
+  when defined(nimfix):
+    result = a[0] == b[0]
+  else:
+    result = true
+
 proc strTableIncl*(t: var TStrTable, n: PSym): bool {.discardable.} =
   # returns true if n is already in the string table:
   # It is essential that `n` is written nevertheless!
@@ -635,7 +641,7 @@ proc strTableIncl*(t: var TStrTable, n: PSym): bool {.discardable.} =
   while true:
     var it = t.data[h]
     if it == nil: break
-    if it.name.id == n.name.id:
+    if it.name.id == n.name.id and reallySameIdent(it.name.s, n.name.s):
       t.data[h] = n           # overwrite it with newer definition!
       return true             # found it
     h = nextTry(h, high(t.data))

compiler/commands.nim

@@ -308,8 +308,7 @@ proc processSwitch(switch, arg: string, pass: TCmdLinePass, info: TLineInfo) =
     expectArg(switch, arg, pass, info)
     options.docSeeSrcUrl = arg
   of "mainmodule", "m":
-    expectArg(switch, arg, pass, info)
-    optMainModule = arg
+    discard "allow for backwards compatibility, but don't do anything"
   of "define", "d": 
     expectArg(switch, arg, pass, info)
     defineSymbol(arg)

compiler/main.nim

@@ -211,25 +211,6 @@ proc commandSuggest =
                    else: gProjectMainIdx
     compileProject(projFile)
 
-proc wantMainModule =
-  if gProjectFull.len == 0:
-    if optMainModule.len == 0:
-      fatal(gCmdLineInfo, errCommandExpectsFilename)
-    else:
-      gProjectName = optMainModule
-      gProjectFull = gProjectPath / gProjectName
-
-  gProjectMainIdx = addFileExt(gProjectFull, NimExt).fileInfoIdx
-
-proc requireMainModuleOption =
-  if optMainModule.len == 0:
-    fatal(gCmdLineInfo, errMainModuleMustBeSpecified)
-  else:
-    gProjectName = optMainModule
-    gProjectFull = gProjectPath / gProjectName
-
-  gProjectMainIdx = addFileExt(gProjectFull, NimExt).fileInfoIdx
-
 proc resetMemory =
   resetCompilationLists()
   ccgutils.resetCaches()
@@ -293,30 +274,24 @@ proc mainCommand* =
     # current path is always looked first for modules
     prependStr(searchPaths, gProjectPath)
   setId(100)
-  passes.gIncludeFile = includeModule
-  passes.gImportModule = importModule
   case command.normalize
   of "c", "cc", "compile", "compiletoc":
     # compile means compileToC currently
     gCmd = cmdCompileToC
-    wantMainModule()
     commandCompileToC()
   of "cpp", "compiletocpp":
     extccomp.cExt = ".cpp"
     gCmd = cmdCompileToCpp
     if cCompiler == ccGcc: setCC("gcc")
-    wantMainModule()
     defineSymbol("cpp")
     commandCompileToC()
   of "objc", "compiletooc":
     extccomp.cExt = ".m"
     gCmd = cmdCompileToOC
-    wantMainModule()
     defineSymbol("objc")
     commandCompileToC()
   of "run":
     gCmd = cmdRun
-    wantMainModule()
     when hasTinyCBackend:
       extccomp.setCC("tcc")
       commandCompileToC()
@@ -324,39 +299,32 @@ proc mainCommand* =
       rawMessage(errInvalidCommandX, command)
   of "js", "compiletojs":
     gCmd = cmdCompileToJS
-    wantMainModule()
     commandCompileToJS()
   of "compiletollvm":
     gCmd = cmdCompileToLLVM
-    wantMainModule()
     when hasLLVM_Backend:
       CommandCompileToLLVM()
     else:
       rawMessage(errInvalidCommandX, command)
   of "pretty":
     gCmd = cmdPretty
-    wantMainModule()
     commandPretty()
   of "doc":
     gCmd = cmdDoc
     loadConfigs(DocConfig)
-    wantMainModule()
     commandDoc()
   of "doc2":
     gCmd = cmdDoc
     loadConfigs(DocConfig)
-    wantMainModule()
     defineSymbol("nimdoc")
     commandDoc2()
   of "rst2html":
     gCmd = cmdRst2html
     loadConfigs(DocConfig)
-    wantMainModule()
     commandRst2Html()
   of "rst2tex":
     gCmd = cmdRst2tex
     loadConfigs(DocTexConfig)
-    wantMainModule()
     commandRst2TeX()
   of "jsondoc":
     gCmd = cmdDoc
@@ -370,12 +338,11 @@ proc mainCommand* =
     commandBuildIndex()
   of "gendepend":
     gCmd = cmdGenDepend
-    wantMainModule()
     commandGenDepend()
   of "dump":
     gCmd = cmdDump
     if getConfigVar("dump.format") == "json":
-      requireMainModuleOption()
+      wantMainModule()
 
       var definedSymbols = newJArray()
       for s in definedSymbolNames(): definedSymbols.elems.add(%s)
@@ -399,7 +366,6 @@ proc mainCommand* =
       for it in iterSearchPath(searchPaths): msgWriteln(it)
   of "check":
     gCmd = cmdCheck
-    wantMainModule()
     commandCheck()
   of "parse":
     gCmd = cmdParse
@@ -423,7 +389,6 @@ proc mainCommand* =
     if gEvalExpr != "":
       commandEval(gEvalExpr)
     else:
-      wantMainModule()
       commandSuggest()
   of "serve":
     isServing = true

compiler/modules.nim

@@ -185,8 +185,17 @@ proc compileSystemModule* =
     systemFileIdx = fileInfoIdx(options.libpath/"system.nim")
     discard compileModule(systemFileIdx, {sfSystemModule})
 
-proc compileProject*(projectFile = gProjectMainIdx) =
+proc wantMainModule* =
+  if gProjectFull.len == 0:
+    fatal(gCmdLineInfo, errCommandExpectsFilename)
+  gProjectMainIdx = addFileExt(gProjectFull, NimExt).fileInfoIdx
+
+proc compileProject*(projectFileIdx = -1'i32) =
+  wantMainModule()
+  passes.gIncludeFile = includeModule
+  passes.gImportModule = importModule
   let systemFileIdx = fileInfoIdx(options.libpath / "system.nim")
+  let projectFile = if projectFileIdx < 0: gProjectMainIdx else: projectFileIdx
   if projectFile == systemFileIdx:
     discard compileModule(projectFile, {sfMainModule, sfSystemModule})
   else:

compiler/nim.nimrod.cfg

@@ -1,7 +1,5 @@
 # Special configuration file for the Nim project
 
-mainModule:"nimrod.nim"
-
 # gc:markAndSweep
 
 hint[XDeclaredButNotUsed]:off

compiler/nimfix.nim

@@ -11,7 +11,7 @@
 
 import strutils, os, parseopt
 import options, commands, modules, sem, passes, passaux, pretty, msgs, nimconf,
-  extccomp, condsyms
+  extccomp, condsyms, lists
 
 const Usage = """
 Nimfix - Tool to patch Nim code
@@ -36,6 +36,11 @@ proc mainCommand =
   registerPass semPass
   registerPass prettyPass
   gCmd = cmdPretty
+  appendStr(searchPaths, options.libpath)
+  if gProjectFull.len != 0:
+    # current path is always looked first for modules
+    prependStr(searchPaths, gProjectPath)
+
   compileProject()
   pretty.overwriteFiles()
 
@@ -68,7 +73,8 @@ proc processCmdLine*(pass: TCmdLinePass, cmd: string) =
       else:
         processSwitch(pass, p)
     of cmdArgument:
-      if processArgument(pass, p, argsCount): break
+      options.gProjectName = unixToNativePath(p.key)
+      # if processArgument(pass, p, argsCount): break
 
 proc handleCmdLine() =
   if paramCount() == 0:

compiler/options.nim

@@ -152,7 +152,6 @@ var
   gProjectPath* = "" # holds a path like /home/alice/projects/nimrod/compiler/
   gProjectFull* = "" # projectPath/projectName
   gProjectMainIdx*: int32 # the canonical path id of the main module
-  optMainModule* = "" # the main module that should be used for idetools commands
   nimcacheDir* = ""
   command* = "" # the main command (e.g. cc, check, scan, etc)
   commandArgs*: seq[string] = @[] # any arguments after the main command

doc/advopt.txt

@@ -28,7 +28,6 @@ Advanced commands:
     --server.address:HOST   binds to that address, by default ""
 
 Advanced options:
-  -m, --mainmodule:FILE     set the project main module
   -o, --out:FILE            set the output filename
   --stdout                  output to stdout
   --listFullPaths           list full paths in messages

todo.txt

@@ -1,7 +1,6 @@
 version 0.10
 ============
 
-- Write new nimfix tool
 - Test nimfix on various babel packages
 - Pegs do not work at compile-time
 
@@ -10,6 +9,8 @@ version 0.9.6
 =============
 
 - fix tflowvar codegen test
+- allow simple read accesses to global variables --> difficult to ensure that
+  no data races happen
 - split idetools into separate tool
 - split docgen into separate tool
 - .benign pragma