[apps/code] Split the editor in editor and executor

Change-Id: I862deeb4fd84e8fb77bf880095f80c1a2a4d8c5d

apps/code/executor_controller.cpp

@@ -0,0 +1,81 @@
+#include "executor_controller.h"
+
+extern "C" {
+#include <stdlib.h>
+#include "py/compile.h"
+#include "py/runtime.h"
+#include "py/gc.h"
+#include "py/stackctrl.h"
+}
+
+namespace Code {
+
+mp_obj_t execute_from_str(const char *str) {
+  nlr_buf_t nlr;
+  if (nlr_push(&nlr) == 0) {
+    mp_lexer_t *lex = mp_lexer_new_from_str_len(0/*MP_QSTR_*/, str, strlen(str), false);
+    mp_parse_tree_t pt = mp_parse(lex, MP_PARSE_FILE_INPUT);
+    mp_obj_t module_fun = mp_compile(&pt, lex->source_name, MP_EMIT_OPT_NONE, false);
+    mp_call_function_0(module_fun);
+    nlr_pop();
+    return 0;
+  } else {
+    // uncaught exception
+    return (mp_obj_t)nlr.ret_val;
+  }
+}
+
+extern "C"
+void mp_hal_stdout_tx_strn_cooked(const char * str, size_t len) {
+  KDContext * ctx = KDIonContext::sharedContext();
+  ctx->drawString(str, KDPoint(0, 0));
+}
+
+ExecutorController::ContentView::ContentView(Program * program) :
+  View(),
+  m_program(program)
+{
+}
+
+void ExecutorController::ContentView::drawRect(KDContext * ctx, KDRect rect) const {
+  ctx->fillRect(bounds(), KDColorWhite);
+  runPython();
+}
+
+void ExecutorController::ContentView::runPython() const {
+  // Initialized stack limit
+  mp_stack_set_limit(40000);
+
+  char * pythonHeap = (char *)malloc(16384);
+
+  gc_init(pythonHeap, pythonHeap + 16384);
+
+  // Initialize interpreter
+  mp_init();
+
+  if (execute_from_str(m_program->readOnlyContent())) {
+    mp_hal_stdout_tx_strn_cooked("Error", 0);
+  }
+
+  free(pythonHeap);
+}
+
+ExecutorController::ExecutorController(Program * program) :
+  ViewController(nullptr),
+  m_view(program)
+{
+}
+
+View * ExecutorController::view() {
+  return &m_view;
+}
+
+bool ExecutorController::handleEvent(Ion::Events::Event event) {
+  if (event == Ion::Events::OK) {
+    app()->dismissModalViewController();
+    return true;
+  }
+  return false;
+}
+
+}