Reading files!

- File.close()
- File.open()
- File.read()
- file.readBytes()

And a few other little methods. Still lots more work to do, but it's a
start.

src/cli/modules.c

@@ -7,7 +7,14 @@
 #include "scheduler.wren.inc"
 #include "timer.wren.inc"
 
-extern void fileStartSize(WrenVM* vm);
+extern void fileAllocate(WrenVM* vm);
+extern void fileFinalize(WrenVM* vm);
+extern void fileOpen(WrenVM* vm);
+extern void fileSizePath(WrenVM* vm);
+extern void fileClose(WrenVM* vm);
+extern void fileDescriptor(WrenVM* vm);
+extern void fileReadBytes(WrenVM* vm);
+extern void fileSize(WrenVM* vm);
 extern void schedulerCaptureMethods(WrenVM* vm);
 extern void timerStartTimer(WrenVM* vm);
 
@@ -19,7 +26,7 @@ extern void timerStartTimer(WrenVM* vm);
 // If you add a new method to the longest class below, make sure to bump this.
 // Note that it also includes an extra slot for the sentinel value indicating
 // the end of the list.
-#define MAX_METHODS_PER_CLASS 2
+#define MAX_METHODS_PER_CLASS 9
 
 // The maximum number of foreign classes a single built-in module defines.
 //
@@ -75,7 +82,14 @@ static ModuleRegistry modules[] =
 {
   MODULE(io)
     CLASS(File)
-      STATIC_METHOD("startSize_(_,_)", fileStartSize)
+      STATIC_METHOD("<allocate>", fileAllocate)
+      STATIC_METHOD("<finalize>", fileFinalize)
+      STATIC_METHOD("open_(_,_)", fileOpen)
+      STATIC_METHOD("sizePath_(_,_)", fileSizePath)
+      METHOD("close_(_)", fileClose)
+      METHOD("descriptor", fileDescriptor)
+      METHOD("readBytes_(_,_)", fileReadBytes)
+      METHOD("size_(_)", fileSize)
     END_CLASS
   END_MODULE
   

src/cli/vm.c

@@ -18,6 +18,9 @@ static uv_loop_t* loop;
 
 static char const* rootDirectory = NULL;
 
+// The exit code to use unless some other error overrides it.
+int defaultExitCode = 0;
+
 // Reads the contents of the file at [path] and returns it as a heap allocated
 // string.
 //
@@ -220,6 +223,8 @@ void runFile(const char* path)
   // Exit with an error code if the script failed.
   if (result == WREN_RESULT_COMPILE_ERROR) exit(65); // EX_DATAERR.
   if (result == WREN_RESULT_RUNTIME_ERROR) exit(70); // EX_SOFTWARE.
+  
+  if (defaultExitCode != 0) exit(defaultExitCode);
 }
 
 int runRepl()
@@ -262,6 +267,11 @@ uv_loop_t* getLoop()
   return loop;
 }
 
+void setExitCode(int exitCode)
+{
+  defaultExitCode = exitCode;
+}
+
 void setTestCallbacks(WrenBindForeignMethodFn bindMethod,
                       WrenBindForeignClassFn bindClass,
                       WrenForeignMethodFn afterLoad)

src/cli/vm.h

@@ -18,6 +18,9 @@ WrenVM* getVM();
 // Gets the event loop the VM is using.
 uv_loop_t* getLoop();
 
+// Set the exit code the CLI should exit with when done.
+void setExitCode(int exitCode);
+
 // Adds additional callbacks to use when binding foreign members from Wren.
 //
 // Used by the API test executable to let it wire up its own foreign functions.