Simplified the command line interface.

doc/nomsu.1

@@ -1,6 +1,6 @@
 .\" Manpage for nomsu.
 .\" Contact bruce@bruce-hill.com to correct errors or typos.
-.TH man 8 "24 June 2018" "1.0" "nomsu man page"
+.TH man 8 "9 July 2018" "1.1" "nomsu man page"
 .SH NAME
 nomsu \- run a Nomsu program
 .SH SYNOPSIS
@@ -9,27 +9,26 @@ nomsu \- run a Nomsu program
 .I options
 ]
 [
-.I scripts
+.I nomsu_file
-[ --
+[
 .I args
 ]
 ]
 .SH DESCRIPTION
-.B
+\fBnomsu\fR is the compiler/interpreter for the Nomsu programming language.
-nomsu
+.SH INPUT
-is the compiler/interpreter for the Nomsu programming language.
+.TP
+If an input file is provided, \fBnomsu\fR will run that file.
+.TP
+If an input directory is provided, \fBnomsu\fR will run every .nom file in the directory and its subdirectories.
+.TP
+If "-" is used, \fBnomsu\fR will read from standard input
+.TP
+If no input files are provided, \fBnomsu\fR will run in interactive mode.
 .SH OPTIONS
 .TP
 .BI \-V " version"
-Specify the desired Nomsu version (defaults to the latest installed version). E.g.
+Specify the desired Nomsu version (defaults to the latest installed version). E.g. \fBnomsu -V 1.2\fR or \fBnomsu -V 1.2.5.9\fR
-.B
-nomsu -V 1.2
-or
-.B
-nomsu -V 1.2.5.9
-.TP
-.B \-i
-Enter interactive mode after the input files are executed.
 .TP
 .B \-O
 Run the compiler in optimized mode (use precompiled .lua versions of .nom files, when available)
@@ -38,13 +37,13 @@ Run the compiler in optimized mode (use precompiled .lua versions of .nom files,
 Verbose: print compiled lua code as it's generated for the input files.
 .TP
 .B \-c
-Compile input files into .lua files
+Compile the input files into .lua files.
 .TP
-.B \-f
+.B \-s " file"
-Auto-format the given Nomsu file and print the result.
+Check the input files for syntax errors without running them.
 .TP
-.B \-s
+.B \-I " file"
-Check the program for syntax errors.
+Include the specified file (or all .nom files in a directory and its subdirectories) in the input files.
 .TP
 .B \--version
 Print the version number and exit.
@@ -69,8 +68,8 @@ Compiles the Nomsu file 'my_file.nom' into a Lua file called 'my_file.lua'
 
 .TP
 .B
-nomsu my_directory
+nomsu -I one.nom -I two.nom three.nom
-Runs every '.nom' file in 'my_directory' or its subdirectories.
+Runs 'one.nom', then 'two.nom', then 'three.nom'.
 
 .TP
 .B

files.lua

@@ -56,9 +56,27 @@ iterate_single = function(item, prev)
 end
 local ok, lfs = pcall(require, "lfs")
 if ok then
-  files.walk = function(path)
+  local raw_file_exists
-    if match(path, "%.nom$") or match(path, "%.lua$") or path == 'stdin' then
+  raw_file_exists = function(filename)
-      return iterate_single, path
+    local mode = lfs.attributes(filename, 'mode')
+    if mode == 'file' or mode == 'directory' then
+      return true
+    else
+      return false
+    end
+  end
+  files.exists = function(path)
+    if path == 'stdin' or raw_file_exists(path) then
+      return true
+    end
+    if package.nomsupath then
+      for nomsupath in package.nomsupath:gmatch("[^;]+") do
+        if raw_file_exists(nomsupath .. "/" .. path) then
+          return true
+        end
+      end
+    end
+    return false
   end
   local browse
   browse = function(filename)
@@ -81,6 +99,10 @@ if ok then
     end
     return false
   end
+  files.walk = function(path)
+    if match(path, "%.nom$") or match(path, "%.lua$") or path == 'stdin' then
+      return iterate_single, path
+    end
     return coroutine.wrap(function()
       if not browse(path) and package.nomsupath then
         for nomsupath in package.nomsupath:gmatch("[^;]+") do
@@ -96,14 +118,32 @@ else
   if io.popen('find . -maxdepth 0'):close() then
     error("Could not find 'luafilesystem' module and couldn't run system command `find` (this might happen on Windows). Please install `luafilesystem` (which can be found at: http://keplerproject.github.io/luafilesystem/ or `luarocks install luafilesystem`)", 0)
   end
-  files.walk = function(path)
+  local sanitize
-    if match(path, "%.nom$") or match(path, "%.lua$") or path == 'stdin' then
+  sanitize = function(path)
-      return iterate_single, path
-    end
     path = gsub(path, "\\", "\\\\")
     path = gsub(path, "`", "")
     path = gsub(path, '"', '\\"')
     path = gsub(path, "$", "")
+    return path
+  end
+  files.exists = function(path)
+    if not (io.popen("ls " .. tostring(sanitize(path))):close()) then
+      return true
+    end
+    if package.nomsupath then
+      for nomsupath in package.nomsupath:gmatch("[^;]+") do
+        if not (io.popen("ls " .. tostring(nomsupath) .. "/" .. tostring(sanitize(path))):close()) then
+          return true
+        end
+      end
+    end
+    return false
+  end
+  files.walk = function(path)
+    if match(path, "%.nom$") or match(path, "%.lua$") or path == 'stdin' then
+      return iterate_single, path
+    end
+    path = sanitize(path)
     return coroutine.wrap(function()
       local f = io.popen('find -L "' .. path .. '" -not -path "*/\\.*" -type f -name "*.nom"')
       local found = false

files.moon

@@ -35,10 +35,16 @@ iterate_single = (item, prev) -> if item == prev then nil else item
 iterate_single = (item, prev) -> if item == prev then nil else item
 ok, lfs = pcall(require, "lfs")
 if ok
-    files.walk = (path)->
+    raw_file_exists = (filename)->
-        if match(path, "%.nom$") or match(path, "%.lua$") or path == 'stdin'
+        mode = lfs.attributes(filename, 'mode')
-            return iterate_single, path
+        return if mode == 'file' or mode == 'directory' then true else false
-        -- Return 'true' if any files or directories are found, otherwise 'false'
+    files.exists = (path)->
+        return true if path == 'stdin' or raw_file_exists(path)
+        if package.nomsupath
+            for nomsupath in package.nomsupath\gmatch("[^;]+")
+                return true if raw_file_exists(nomsupath.."/"..path)
+        return false
+    -- Return 'true' if any files or directories are found, otherwise 'false', and yield every filename
     browse = (filename)->
         file_type = lfs.attributes(filename, 'mode')
         if file_type == 'file'
@@ -55,6 +61,9 @@ if ok
             coroutine.yield(filename)
             return true
         return false
+    files.walk = (path)->
+        if match(path, "%.nom$") or match(path, "%.lua$") or path == 'stdin'
+            return iterate_single, path
         return coroutine.wrap ->
             if not browse(path) and package.nomsupath
                 for nomsupath in package.nomsupath\gmatch("[^;]+")
@@ -64,15 +73,25 @@ else
     if io.popen('find . -maxdepth 0')\close!
         error "Could not find 'luafilesystem' module and couldn't run system command `find` (this might happen on Windows). Please install `luafilesystem` (which can be found at: http://keplerproject.github.io/luafilesystem/ or `luarocks install luafilesystem`)", 0
     
-    files.walk = (path)->
-        if match(path, "%.nom$") or match(path, "%.lua$") or path == 'stdin'
-            return iterate_single, path
-        -- Sanitize path
     -- TODO: improve sanitization
+    sanitize = (path)->
         path = gsub(path,"\\","\\\\")
         path = gsub(path,"`","")
         path = gsub(path,'"','\\"')
         path = gsub(path,"$","")
+        return path
+
+    files.exists = (path)->
+        return true unless io.popen("ls #{sanitize(path)}")\close!
+        if package.nomsupath
+            for nomsupath in package.nomsupath\gmatch("[^;]+")
+                return true unless io.popen("ls #{nomsupath}/#{sanitize(path)}")\close!
+        return false
+
+    files.walk = (path)->
+        if match(path, "%.nom$") or match(path, "%.lua$") or path == 'stdin'
+            return iterate_single, path
+        path = sanitize(path)
         return coroutine.wrap ->
             f = io.popen('find -L "'..path..'" -not -path "*/\\.*" -type f -name "*.nom"')
             found = false

nomsu.lua

@@ -53,20 +53,18 @@ end
 local EXIT_SUCCESS, EXIT_FAILURE = 0, 1
 local usage = [=[Nomsu Compiler
 
-Usage: (lua nomsu.lua | moon nomsu.moon) [-V version] [-i] [-O] [-v] [-c] [-f] [-s] [--help] [--version] [-p print_file] file1 file2... [-- nomsu args...]
+Usage: (nomsu | lua nomsu.lua | moon nomsu.moon) [-V version] [-O] [-v] [-c] [-s] [-I file] [--help | -h] [--version] [file [nomsu args...]]
 
 OPTIONS
-    -i Run the compiler in interactive mode (REPL)
+    -O Run the compiler in optimized mode (use precompiled .lua versions of Nomsu files, when available).
-    -O Run the compiler in optimized mode (use precompiled .lua versions of Nomsu files, when available)
+    -v Verbose: print compiled lua code.
-    -v Verbose: print compiled lua code
+    -c Compile the input files into a .lua files.
-    -c Compile .nom files into .lua files
+    -s Check the input files for syntax errors.
-    -f Auto-format the given Nomsu file and print the result.
+    -I <file> Add an additional input file or directory.
-    -s Check the program for syntax errors.
     -h/--help Print this message.
     --version Print the version number and exit.
-    -V specify which Nomsu version is desired
+    -V specify which Nomsu version is desired.
-    -p <file> Print to the specified file instead of stdout.
+    <file> The Nomsu file to run (can be "-" to use stdin).
-    <input> Input file can be "-" to use stdin.
 ]=]
 local ok, _ = pcall(function()
   lpeg = require('lpeg')
@@ -88,22 +86,24 @@ repr = require("utils").repr
 if not arg or debug.getinfo(2).func == require then
   return NomsuCompiler
 end
-local parser = re.compile([[    args <- {| (flag ";")* {:inputs: {| ({file} ";")* |} :} {:nomsu_args: {| ("--;" ({[^;]*} ";")*)? |} :} ";"? |} !.
+local file_queue = { }
+local parser = re.compile([[    args <- {| (flag ";")* (({~ file ~} -> add_file) ";")? {:nomsu_args: {| ({[^;]*} ";")* |} :} ";"? |} !.
     flag <-
-        {:interactive: ("-i" -> true) :}
+        {:optimized: ("-O" -> true) :}
-      / {:optimized: ("-O" -> true) :}
+      / ("-I" (";")? ({~ file ~} -> add_file))
-      / {:format: ("-f" -> true) :}
+      / ({:check_syntax: ("-s" -> true):})
-      / {:syntax: ("-s" -> true) :}
+      / ({:compile: ("-c" -> true):})
-      / {:print_file: "-p" ";" {file} :}
-      / {:compile: ("-c" -> true) :}
       / {:verbose: ("-v" -> true) :}
       / {:help: (("-h" / "--help") -> true) :}
       / {:version: ("--version" -> true) :}
       / {:requested_version: "-V" ((";")? {([0-9.])+})? :}
-    file <- "-" / [^;]+
+    file <- ("-" -> "stdin") / {[^;]+}
 ]], {
   ["true"] = function()
     return true
+  end,
+  add_file = function(f)
+    return table.insert(file_queue, f)
   end
 })
 local arg_string = table.concat(arg, ";") .. ";"
@@ -134,84 +134,27 @@ FILE_CACHE = setmetatable({ }, {
 })
 local run
 run = function()
-  for i, input in ipairs(args.inputs) do
-    if input == "-" then
-      args.inputs[i] = 'stdin'
-    end
-  end
-  if #args.inputs == 0 and not args.interactive then
-    args.inputs = {
-      "core"
-    }
-    args.interactive = true
-  end
-  local print_file
-  if args.print_file == "-" then
-    print_file = io.stdout
-  elseif args.print_file then
-    print_file = io.open(args.print_file, 'w')
-  else
-    print_file = io.stdout
-  end
-  if print_file == nil then
-    nomsu.print = function() end
-  elseif print_file ~= io.stdout then
-    nomsu.print = function(...)
-      local N = select("#", ...)
-      if N > 0 then
-        print_file:write(tostring(select(1, ...)))
-        for i = 2, N do
-          print_file:write('\t', tostring(select(1, ...)))
-        end
-      end
-      print_file:write('\n')
-      return print_file:flush()
-    end
-  end
   local input_files = { }
-  local to_run = { }
+  for _index_0 = 1, #file_queue do
-  local _list_0 = args.inputs
+    local f = file_queue[_index_0]
-  for _index_0 = 1, #_list_0 do
+    if not (files.exists(f)) then
-    local _continue_0 = false
+      error("Could not find: " .. tostring(f))
-    repeat
-      local input = _list_0[_index_0]
-      if input == 'stdin' then
-        input_files[#input_files + 1] = 'stdin'
-        to_run['stdin'] = true
-        _continue_0 = true
-        break
     end
-      local found = false
+    for filename in files.walk(f) do
-      for f in files.walk(input) do
+      input_files[filename] = true
-        input_files[#input_files + 1] = f
-        to_run[f] = true
-        found = true
-      end
-      if not found then
-        error("Could not find: " .. tostring(input))
-      end
-      _continue_0 = true
-    until true
-    if not _continue_0 then
-      break
     end
   end
   nomsu.can_optimize = function(f)
     if not (args.optimized) then
       return false
     end
-    if to_run[f] then
+    if args.compile and input_files[f] then
       return false
     end
     return true
   end
-  local parse_errs = { }
+  local get_file_and_source
-  local _list_1 = args.inputs
+  get_file_and_source = function(filename)
-  for _index_0 = 1, #_list_1 do
-    local arg = _list_1[_index_0]
-    for filename in files.walk(arg) do
-      local _continue_0 = false
-      repeat
     local file, source
     if filename == 'stdin' then
       file = io.read("*a")
@@ -224,70 +167,73 @@ run = function()
       end
       source = Source(filename, 1, #file)
     else
-          _continue_0 = true
+      return nil
-          break
     end
     source = Source(filename, 1, #file)
-        local output
+    return file, source
-        if args.compile then
-          output = io.open(filename:gsub("%.nom$", ".lua"), "w")
-        else
-          output = nil
   end
-        if args.syntax then
+  local run_file
-          local err
+  run_file = function(filename, lua_handler)
-          ok, err = pcall(nomsu.parse, nomsu, file, source)
+    if lua_handler == nil then
-          if not ok then
+      lua_handler = nil
-            table.insert(parse_errs, err)
-          elseif print_file then
-            print_file:write("Parse succeeded: " .. tostring(filename) .. "\n")
-            print_file:flush()
     end
-          _continue_0 = true
+    local file, source = get_file_and_source(filename)
-          break
+    if not (file) then
+      return nil
     end
     local tree = nomsu:parse(file, source)
-        if args.format then
-          local formatted = tree and tostring(nomsu:tree_to_nomsu(tree)) or ""
-          if print_file then
-            print_file:write(formatted, "\n")
-            print_file:flush()
-          end
-          _continue_0 = true
-          break
-        end
     if tree then
-          if tree.type == "FileChunks" then
+      if tree.type ~= "FileChunks" then
-            for _index_1 = 1, #tree do
+        tree = {
-              local chunk = tree[_index_1]
+          tree
+        }
+      end
+      for _index_0 = 1, #tree do
+        local chunk = tree[_index_0]
         local lua = nomsu:compile(chunk):as_statements("return ")
         lua:declare_locals()
         lua:prepend("-- File: " .. tostring(source.filename:gsub("\n.*", "...")) .. "\n")
-              if args.compile then
+        if lua_handler then
-                output:write(tostring(lua), "\n")
+          lua_handler(tostring(lua))
-              end
-              if args.verbose then
-                print(tostring(lua))
         end
         nomsu:run_lua(lua)
       end
+    end
+  end
+  local parse_errs = { }
+  for _index_0 = 1, #file_queue do
+    local f = file_queue[_index_0]
+    for filename in files.walk(f) do
+      local _continue_0 = false
+      repeat
+        if args.check_syntax then
+          local file, source = get_file_and_source(filename)
+          if not (file) then
+            _continue_0 = true
+            break
+          end
+          nomsu:parse(file, source)
+          print("Parse succeeded: " .. tostring(filename))
+        end
+        if args.compile then
+          local output
+          if filename == 'stdin' then
+            output = io.output()
           else
-            local lua = nomsu:compile(tree):as_statements("return ")
+            output = io.open(filename:gsub("%.nom$", ".lua"), "w")
-            lua:declare_locals()
+          end
-            lua:prepend("-- File: " .. tostring(source.filename:gsub("\n.*", "...")) .. "\n")
+          run_file(filename, function(lua)
-            if args.compile then
             output:write(tostring(lua), "\n")
-            end
             if args.verbose then
-              print(tostring(lua))
+              return print(tostring(lua))
             end
-            nomsu:run_lua(lua)
+          end)
-          end
-        end
-        if args.compile then
           print(("Compiled %-25s -> %s"):format(filename, filename:gsub("%.nom$", ".lua")))
           output:close()
         end
+        if not args.check_syntax and not args.compile then
+          run_file(filename, (args.verbose and print or nil))
+        end
         _continue_0 = true
       until true
       if not _continue_0 then
@@ -295,14 +241,7 @@ run = function()
       end
     end
   end
-  if #parse_errs > 0 then
+  if #file_queue == 0 then
-    io.stderr:write(table.concat(parse_errs, "\n\n"))
-    io.stderr:flush()
-    os.exit(EXIT_FAILURE)
-  elseif args.syntax then
-    os.exit(EXIT_SUCCESS)
-  end
-  if args.interactive then
     nomsu:run([[use "core"
 use "lib/consolecolor.nom"
 action [quit, exit]: lua> "os.exit(0)"

nomsu.moon

@@ -11,20 +11,18 @@ EXIT_SUCCESS, EXIT_FAILURE = 0, 1
 usage = [=[
 Nomsu Compiler
 
-Usage: (lua nomsu.lua | moon nomsu.moon) [-V version] [-i] [-O] [-v] [-c] [-f] [-s] [--help] [--version] [-p print_file] file1 file2... [-- nomsu args...]
+Usage: (nomsu | lua nomsu.lua | moon nomsu.moon) [-V version] [-O] [-v] [-c] [-s] [-I file] [--help | -h] [--version] [file [nomsu args...]]
 
 OPTIONS
-    -i Run the compiler in interactive mode (REPL)
+    -O Run the compiler in optimized mode (use precompiled .lua versions of Nomsu files, when available).
-    -O Run the compiler in optimized mode (use precompiled .lua versions of Nomsu files, when available)
+    -v Verbose: print compiled lua code.
-    -v Verbose: print compiled lua code
+    -c Compile the input files into a .lua files.
-    -c Compile .nom files into .lua files
+    -s Check the input files for syntax errors.
-    -f Auto-format the given Nomsu file and print the result.
+    -I <file> Add an additional input file or directory.
-    -s Check the program for syntax errors.
     -h/--help Print this message.
     --version Print the version number and exit.
-    -V specify which Nomsu version is desired
+    -V specify which Nomsu version is desired.
-    -p <file> Print to the specified file instead of stdout.
+    <file> The Nomsu file to run (can be "-" to use stdin).
-    <input> Input file can be "-" to use stdin.
 ]=]
 
 ok, _ = pcall ->
@@ -43,21 +41,23 @@ NomsuCompiler = require "nomsu_compiler"
 if not arg or debug.getinfo(2).func == require
     return NomsuCompiler
 
+file_queue = {}
 parser = re.compile([[
-    args <- {| (flag ";")* {:inputs: {| ({file} ";")* |} :} {:nomsu_args: {| ("--;" ({[^;]*} ";")*)? |} :} ";"? |} !.
+    args <- {| (flag ";")* (({~ file ~} -> add_file) ";")? {:nomsu_args: {| ({[^;]*} ";")* |} :} ";"? |} !.
     flag <-
-        {:interactive: ("-i" -> true) :}
+        {:optimized: ("-O" -> true) :}
-      / {:optimized: ("-O" -> true) :}
+      / ("-I" (";")? ({~ file ~} -> add_file))
-      / {:format: ("-f" -> true) :}
+      / ({:check_syntax: ("-s" -> true):})
-      / {:syntax: ("-s" -> true) :}
+      / ({:compile: ("-c" -> true):})
-      / {:print_file: "-p" ";" {file} :}
-      / {:compile: ("-c" -> true) :}
       / {:verbose: ("-v" -> true) :}
       / {:help: (("-h" / "--help") -> true) :}
       / {:version: ("--version" -> true) :}
       / {:requested_version: "-V" ((";")? {([0-9.])+})? :}
-    file <- "-" / [^;]+
+    file <- ("-" -> "stdin") / {[^;]+}
-]], {true: -> true})
+]], {
+    true: -> true
+    add_file: (f)-> table.insert(file_queue, f)
+})
 arg_string = table.concat(arg, ";")..";"
 args = parser\match(arg_string)
 if not args or args.help
@@ -87,52 +87,19 @@ FILE_CACHE = setmetatable {}, {
 }
 
 run = ->
-    for i,input in ipairs args.inputs
-        if input == "-" then args.inputs[i] = 'stdin'
-
-    if #args.inputs == 0 and not args.interactive
-        args.inputs = {"core"}
-        args.interactive = true
-
-    print_file = if args.print_file == "-" then io.stdout
-    elseif args.print_file then io.open(args.print_file, 'w')
-    else io.stdout
-
-    if print_file == nil
-        nomsu.print = ->
-    elseif print_file != io.stdout
-        nomsu.print = (...)->
-            N = select("#",...)
-            if N > 0
-                print_file\write(tostring(select(1,...)))
-                for i=2,N
-                    print_file\write('\t',tostring(select(1,...)))
-            print_file\write('\n')
-            print_file\flush!
-
     input_files = {}
-    to_run = {}
+    for f in *file_queue
-    for input in *args.inputs
+        unless files.exists(f)
-        if input == 'stdin'
+            error("Could not find: #{f}")
-            input_files[#input_files+1] = 'stdin'
+        for filename in files.walk(f)
-            to_run['stdin'] = true
+            input_files[filename] = true
-            continue
-        found = false
-        for f in files.walk(input)
-            input_files[#input_files+1] = f
-            to_run[f] = true
-            found = true
-        if not found
-            error("Could not find: #{input}")
 
     nomsu.can_optimize = (f)->
         return false unless args.optimized
-        return false if to_run[f]
+        return false if args.compile and input_files[f]
         return true
 
-    parse_errs = {}
+    get_file_and_source = (filename)->
-    for arg in *args.inputs
-        for filename in files.walk(arg)
         local file, source
         if filename == 'stdin'
             file = io.read("*a")
@@ -143,33 +110,17 @@ run = ->
             if not file
                 error("File does not exist: #{filename}", 0)
             source = Source(filename, 1, #file)
-            else continue
+        else return nil
         source = Source(filename,1,#file)
+        return file, source
 
-            output = if args.compile then io.open(filename\gsub("%.nom$", ".lua"), "w") else nil
+    run_file = (filename, lua_handler=nil)->
-
+        file, source = get_file_and_source(filename)
-            if args.syntax
+        return nil unless file
-                -- Check syntax:
-                ok,err = pcall nomsu.parse, nomsu, file, source
-                if not ok
-                    table.insert parse_errs, err
-                elseif print_file
-                    print_file\write("Parse succeeded: #{filename}\n")
-                    print_file\flush!
-                continue
-
         tree = nomsu\parse(file, source)
-
-            if args.format
-                -- Auto-format
-                formatted = tree and tostring(nomsu\tree_to_nomsu(tree)) or ""
-                if print_file
-                    print_file\write(formatted, "\n")
-                    print_file\flush!
-                continue
-
         if tree
-                if tree.type == "FileChunks"
+            if tree.type != "FileChunks"
+                tree = {tree}
             -- Each chunk's compilation is affected by the code in the previous chunks
             -- (typically), so each chunk needs to compile and run before the next one
             -- compiles.
@@ -177,33 +128,35 @@ run = ->
                 lua = nomsu\compile(chunk)\as_statements("return ")
                 lua\declare_locals!
                 lua\prepend "-- File: #{source.filename\gsub("\n.*", "...")}\n"
-                        if args.compile
+                if lua_handler then lua_handler(tostring(lua))
-                            output\write(tostring(lua), "\n")
-                        if args.verbose
-                            print(tostring(lua))
                 nomsu\run_lua(lua)
-                else
+
-                    lua = nomsu\compile(tree)\as_statements("return ")
+    parse_errs = {}
-                    lua\declare_locals!
+    for f in *file_queue
-                    lua\prepend "-- File: #{source.filename\gsub("\n.*", "...")}\n"
+        for filename in files.walk(f)
+            if args.check_syntax
+                -- Check syntax
+                file, source = get_file_and_source(filename)
+                continue unless file
+                nomsu\parse(file, source)
+                print("Parse succeeded: #{filename}")
+
             if args.compile
+                -- Compile .nom files into .lua
+                output = if filename == 'stdin' then io.output()
+                else io.open(filename\gsub("%.nom$", ".lua"), "w")
+                run_file filename, (lua)->
                     output\write(tostring(lua), "\n")
-                    if args.verbose
+                    if args.verbose then print(tostring(lua))
-                        print(tostring(lua))
-                    nomsu\run_lua(lua)
-            if args.compile
                 print ("Compiled %-25s -> %s")\format(filename, filename\gsub("%.nom$", ".lua"))
                 output\close!
 
-    if #parse_errs > 0
+            if not args.check_syntax and not args.compile
-        io.stderr\write table.concat(parse_errs, "\n\n")
+                -- Just run the file
-        io.stderr\flush!
+                run_file filename, (args.verbose and print or nil)
-        os.exit(EXIT_FAILURE)
-    elseif args.syntax
-        os.exit(EXIT_SUCCESS)
 
-    if args.interactive
+    if #file_queue == 0
-        -- REPL
+        -- Run in interactive mode (REPL)
         nomsu\run [[
 use "core"
 use "lib/consolecolor.nom"

nomsu_compiler.lua

@@ -150,7 +150,7 @@ local NomsuCompiler = setmetatable({ }, {
   end
 })
 do
-  NomsuCompiler.NOMSU_COMPILER_VERSION = 2
+  NomsuCompiler.NOMSU_COMPILER_VERSION = 3
   NomsuCompiler.NOMSU_SYNTAX_VERSION = Parser.version
   NomsuCompiler._ENV = NomsuCompiler
   NomsuCompiler.nomsu = NomsuCompiler

nomsu_compiler.moon

@@ -92,7 +92,7 @@ dict = (t)-> setmetatable(t, _dict_mt)
 MAX_LINE = 80 -- For beautification purposes, try not to make lines much longer than this value
 NomsuCompiler = setmetatable({}, {__index: (k)=> if _self = rawget(@, "self") then _self[k] else nil})
 with NomsuCompiler
-    .NOMSU_COMPILER_VERSION = 2
+    .NOMSU_COMPILER_VERSION = 3
     .NOMSU_SYNTAX_VERSION = Parser.version
     ._ENV = NomsuCompiler
     .nomsu = NomsuCompiler