Start sketching in support for reading from stdin.

src/cli/modules.c

@@ -15,6 +15,8 @@ extern void fileClose(WrenVM* vm);
 extern void fileDescriptor(WrenVM* vm);
 extern void fileReadBytes(WrenVM* vm);
 extern void fileSize(WrenVM* vm);
+extern void stdinReadStart(WrenVM* vm);
+extern void stdinReadStop(WrenVM* vm);
 extern void schedulerCaptureMethods(WrenVM* vm);
 extern void timerStartTimer(WrenVM* vm);
 
@@ -33,7 +35,7 @@ extern void timerStartTimer(WrenVM* vm);
 // If you add a new class to the largest module 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_CLASSES_PER_MODULE 2
+#define MAX_CLASSES_PER_MODULE 3
 
 // Describes one foreign method in a class.
 typedef struct
@@ -68,11 +70,11 @@ typedef struct
 // To locate foreign classes and modules, we build a big directory for them in
 // static data. The nested collection initializer syntax gets pretty noisy, so
 // define a couple of macros to make it easier.
-#define MODULE(name) { #name, &name##ModuleSource, { {
-#define END_MODULE }, {NULL, {}} } },
+#define MODULE(name) { #name, &name##ModuleSource, {
+#define END_MODULE {NULL, {}} }, },
 
-#define CLASS(name) #name, {
-#define END_CLASS {false, NULL, NULL} }
+#define CLASS(name) { #name, {
+#define END_CLASS {false, NULL, NULL} }, },
 
 #define METHOD(signature, fn) {false, signature, fn},
 #define STATIC_METHOD(signature, fn) {true, signature, fn},
@@ -91,14 +93,16 @@ static ModuleRegistry modules[] =
       METHOD("readBytes_(_,_)", fileReadBytes)
       METHOD("size_(_)", fileSize)
     END_CLASS
+    CLASS(Stdin)
+      STATIC_METHOD("readStart_()", stdinReadStart)
+      STATIC_METHOD("readStop_()", stdinReadStop)
+    END_CLASS
   END_MODULE
-  
   MODULE(scheduler)
     CLASS(Scheduler)
       STATIC_METHOD("captureMethods_()", schedulerCaptureMethods)
     END_CLASS
   END_MODULE
-  
   MODULE(timer)
     CLASS(Timer)
       STATIC_METHOD("startTimer_(_,_)", timerStartTimer)

src/cli/vm.c

@@ -1,6 +1,7 @@
 #include <stdio.h>
 #include <string.h>
 
+#include "io.h"
 #include "modules.h"
 #include "scheduler.h"
 #include "vm.h"
@@ -152,6 +153,7 @@ static WrenForeignClassMethods bindForeignClass(
 static void write(WrenVM* vm, const char* text)
 {
   printf("%s", text);
+  fflush(stdout);
 }
 
 static void initVM()
@@ -175,12 +177,15 @@ static void initVM()
 
 static void freeVM()
 {
-  schedulerReleaseMethods();
+  ioShutdown();
+  schedulerShutdown();
   
   uv_loop_close(loop);
   free(loop);
-
+  
   wrenFreeVM(vm);
+
+  uv_tty_reset_mode();
 }
 
 void runFile(const char* path)