From e609deb93ca365b253efa2173ce83046835a8d84 Mon Sep 17 00:00:00 2001
From: Determinant <ted.sybil@gmail.com>
Date: Thu, 1 Feb 2018 14:14:32 -0500
Subject: ...

---
 promise.hpp | 20 ++++++++++----------
 test.cpp    | 23 ++++++++++++++++++-----
 2 files changed, 28 insertions(+), 15 deletions(-)

diff --git a/promise.hpp b/promise.hpp
index 4f1ea06..0f9198c 100644
--- a/promise.hpp
+++ b/promise.hpp
@@ -128,7 +128,7 @@ namespace promise {
             std::is_same<typename function_traits<Func>::ret_type,
                          promise_t>::value>::type
         gen_on_fulfilled(Func on_fulfilled, const promise_t &npm, function<void()> &ret) {
-            ret = [this, on_fulfilled, npm]() {
+            ret = [this, on_fulfilled, npm]() mutable {
                 on_fulfilled(result).then_any(
                     [npm] (pm_any_t result_) {
                         npm.resolve(result_);
@@ -146,7 +146,7 @@ namespace promise {
             std::is_same<typename function_traits<Func>::ret_type,
                          pm_any_t>::value>::type
         gen_on_fulfilled(Func on_fulfilled, const promise_t &npm, function<void()> &ret) {
-            ret = [this, on_fulfilled, npm]() {
+            ret = [this, on_fulfilled, npm]() mutable {
                 npm.resolve(on_fulfilled(result));
             };
         }
@@ -156,15 +156,15 @@ namespace promise {
             std::is_same<typename function_traits<Func>::ret_type,
                          promise_t>::value>::type
         gen_on_rejected(Func on_rejected, const promise_t &npm, function<void()> &ret) {
-            ret = [this, on_rejected, npm]() {
+            ret = [this, on_rejected, npm]() mutable {
                 on_rejected(reason).then_any(
                     [npm] (pm_any_t result_) {
                         npm.resolve(result_);
-                        return none;
+                        return pm_any_t(none);
                     },
                     [npm] (pm_any_t reason_) {
                         npm.reject(reason_);
-                        return none;
+                        return pm_any_t(none);
                     });
             };
         }
@@ -174,7 +174,7 @@ namespace promise {
             std::is_same<typename function_traits<Func>::ret_type,
                          pm_any_t>::value>::type
         gen_on_rejected(Func on_rejected, const promise_t &npm, function<void()> &ret) {
-            ret = [this, on_rejected, npm]() {
+            ret = [this, on_rejected, npm]() mutable {
                 npm.reject(on_rejected(reason));
             };
         }
@@ -367,7 +367,7 @@ namespace promise {
         using arg_type = typename callback_types<FuncFulfilled>::arg_type;
         using ret_type = typename callback_types<FuncFulfilled>::ret_type;
         return ptr->then(
-            [on_fulfilled](pm_any_t _result) {
+            [on_fulfilled](pm_any_t _result) mutable {
                 try {
                     return ret_type(on_fulfilled(std::any_cast<arg_type>(_result)));
                 } catch (std::bad_any_cast e) { PROMISE_ERR_MISMATCH_TYPE; }
@@ -382,12 +382,12 @@ namespace promise {
         using reject_arg_type = typename callback_types<FuncRejected>::arg_type;
         using reject_ret_type = typename callback_types<FuncRejected>::ret_type;
         return ptr->then(
-            [on_fulfilled](pm_any_t _result) {
+            [on_fulfilled](pm_any_t _result) mutable {
                 try {
                     return fulfill_ret_type(on_fulfilled(std::any_cast<fulfill_arg_type>(_result)));
                 } catch (std::bad_any_cast e) { PROMISE_ERR_MISMATCH_TYPE; }
             },
-            [on_rejected](pm_any_t _reason) {
+            [on_rejected](pm_any_t _reason) mutable {
                 try {
                     return reject_ret_type(on_rejected(std::any_cast<reject_arg_type>(_reason)));
                 } catch (std::bad_any_cast e) { PROMISE_ERR_MISMATCH_TYPE; }
@@ -399,7 +399,7 @@ namespace promise {
         using arg_type = typename callback_types<FuncRejected>::arg_type;
         using ret_type = typename callback_types<FuncRejected>::ret_type;
         return ptr->fail(
-            [on_rejected](pm_any_t _reason) {
+            [on_rejected](pm_any_t _reason) mutable {
                 try {
                     return ret_type(on_rejected(std::any_cast<arg_type>(_reason)));
                 } catch (std::bad_any_cast e) { PROMISE_ERR_MISMATCH_TYPE; }
diff --git a/test.cpp b/test.cpp
index df96207..242222d 100644
--- a/test.cpp
+++ b/test.cpp
@@ -3,9 +3,16 @@
 using promise::promise_t;
 
 struct A {
-    promise::None operator()(int y) const {
-        printf("%d\n", y);
-        return promise::none;
+    int operator()(int x) {
+        printf("%d\n", x);
+        return 1;
+    }
+};
+
+struct B {
+    promise_t operator()(int x) {
+        printf("%d\n", x);
+        return promise_t([](promise_t pm) {pm.resolve(1);});
     }
 };
 
@@ -14,13 +21,19 @@ int f(int x) {
     return x + 1;
 }
 
+promise_t g(int x) {
+    printf("%d\n", x);
+    return promise_t([](promise_t pm) {pm.resolve(1);});
+}
+
 int main() {
     std::function<void()> t1;
     std::function<void()> t2;
     std::function<void()> t3;
     std::function<void()> t4;
     std::function<void()> t5;
-    A a;
+    A a1, a2, a3;
+    B b1, b2, b3;
     auto pm = promise_t([&t1](promise_t pm) {
         puts("pm1");
         //t1 = [pm]() {pm.reject(5);};
@@ -43,7 +56,7 @@ int main() {
     }).then([](int x) {
         printf("%d\n", x);
         return 12;
-    }).then(f).then(a);
+    }).then(f).then(a1).fail(a2).then(b1).fail(b2).then(g).then(a3, b3);
     
     auto p1 = promise_t([&t4](promise_t pm) {
         puts("p1");
-- 
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