Add placeholder implementation for `try` block

trans/transpiler/phases/emit_cpp/function.py

@@ -81,3 +81,14 @@ class FunctionVisitor(BlockVisitor):
 
     def visit_Break(self, node: ast.Break) -> Iterable[str]:
         yield "break;"
+
+    def visit_Try(self, node: ast.Try) -> Iterable[str]:
+        yield from self.emit_block(node.inner_scope, node.body)
+        if node.orelse:
+            raise NotImplementedError(node, "orelse")
+        if node.finalbody:
+            raise NotImplementedError(node, "finalbody")
+        for handler in node.handlers:
+            #yield from self.visit(handler)
+            pass
+            # todo

trans/transpiler/phases/typing/block.py

@@ -199,3 +199,21 @@ class ScoperBlockVisitor(ScoperVisitor):
 
     def visit_Break(self, node: ast.Break):
         pass  # TODO: check in loop
+
+    def visit_Try(self, node: ast.Try):
+        scope = self.scope.child(ScopeKind.FUNCTION_INNER)
+        node.inner_scope = scope
+        body_scope = scope.child(ScopeKind.FUNCTION_INNER)
+        body_visitor = ScoperBlockVisitor(body_scope, self.root_decls)
+        body_visitor.visit_block(node.body)
+        # todo
+        for handler in node.handlers:
+            handler_scope = scope.child(ScopeKind.FUNCTION_INNER)
+            handler_visitor = ScoperBlockVisitor(handler_scope, self.root_decls)
+            handler_visitor.visit_block(handler.body)
+        if node.orelse:
+            else_scope = scope.child(ScopeKind.FUNCTION_INNER)
+            else_visitor = ScoperBlockVisitor(else_scope, self.root_decls)
+            else_visitor.visit_block(node.orelse)
+        if node.finalbody:
+            raise NotImplementedError(node.finalbody)
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