intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

6 files changed, 101 insertions, 0 deletions

diff --git a/library/cpp/deprecated/enum_codegen/README.md b/library/cpp/deprecated/enum_codegen/README.md
new file mode 100644
index 0000000000..3bdac29af1
--- /dev/null
+++ b/library/cpp/deprecated/enum_codegen/README.md
@@ -0,0 +1,3 @@
+Some macros for generating enum <-> string conversions.
+
+Just use GENERATE_ENUM_SERIALIZATION. See https://wiki.yandex-team.ru/yatool/HowToWriteYaMakeFiles/#generate-enum
diff --git a/library/cpp/deprecated/enum_codegen/enum_codegen.cpp b/library/cpp/deprecated/enum_codegen/enum_codegen.cpp
new file mode 100644
index 0000000000..3931b05924
--- /dev/null
+++ b/library/cpp/deprecated/enum_codegen/enum_codegen.cpp
@@ -0,0 +1 @@
+#include "enum_codegen.h"
diff --git a/library/cpp/deprecated/enum_codegen/enum_codegen.h b/library/cpp/deprecated/enum_codegen/enum_codegen.h
new file mode 100644
index 0000000000..dfb04ecac2
--- /dev/null
+++ b/library/cpp/deprecated/enum_codegen/enum_codegen.h
@@ -0,0 +1,33 @@
+#pragma once
+
+/// see enum_codegen_ut.cpp for examples
+
+#define ENUM_VALUE_GEN(name, value, ...) name = value,
+#define ENUM_VALUE_GEN_NO_VALUE(name, ...) name,
+
+#define ENUM_TO_STRING_IMPL_ITEM(name, ...) \
+    case name:                              \
+        return #name;
+#define ENUM_LTLT_IMPL_ITEM(name, ...) \
+    case name:                         \
+        os << #name;                   \
+        break;
+
+#define ENUM_TO_STRING(type, MAP)                                            \
+    static inline const char* ToCString(type value) {                        \
+        switch (value) {                                                     \
+            MAP(ENUM_TO_STRING_IMPL_ITEM)                                    \
+            default:                                                         \
+                return "UNKNOWN";                                            \
+        }                                                                    \
+    }                                                                        \
+                                                                             \
+    static inline IOutputStream& operator<<(IOutputStream& os, type value) { \
+        switch (value) {                                                     \
+            MAP(ENUM_LTLT_IMPL_ITEM)                                         \
+            default:                                                         \
+                os << int(value);                                            \
+                break;                                                       \
+        }                                                                    \
+        return os;                                                           \
+    }
diff --git a/library/cpp/deprecated/enum_codegen/enum_codegen_ut.cpp b/library/cpp/deprecated/enum_codegen/enum_codegen_ut.cpp
new file mode 100644
index 0000000000..f8f1c9b6df
--- /dev/null
+++ b/library/cpp/deprecated/enum_codegen/enum_codegen_ut.cpp
@@ -0,0 +1,40 @@
+#include <library/cpp/testing/unittest/registar.h>
+
+#include "enum_codegen.h"
+
+#include <util/string/builder.h>
+
+#define COLOR_MAP(XX) \
+    XX(RED)           \
+    XX(GREEN)         \
+    XX(BLUE)
+
+enum EColor {
+    COLOR_MAP(ENUM_VALUE_GEN_NO_VALUE)
+};
+
+ENUM_TO_STRING(EColor, COLOR_MAP)
+
+#define MULTIPLIER_MAP(XX) \
+    XX(GB, 9)              \
+    XX(MB, 6)              \
+    XX(KB, 3)
+
+enum EMultiplier {
+    MULTIPLIER_MAP(ENUM_VALUE_GEN)
+};
+
+ENUM_TO_STRING(EMultiplier, MULTIPLIER_MAP)
+
+Y_UNIT_TEST_SUITE(EnumCodegen) {
+    Y_UNIT_TEST(GenWithValue) {
+        UNIT_ASSERT_VALUES_EQUAL(6, MB);
+    }
+
+    Y_UNIT_TEST(ToCString) {
+        UNIT_ASSERT_VALUES_EQUAL("RED", ToCString(RED));
+        UNIT_ASSERT_VALUES_EQUAL("BLUE", ToCString(BLUE));
+        UNIT_ASSERT_VALUES_EQUAL("GREEN", (TStringBuilder() << GREEN));
+        UNIT_ASSERT_VALUES_EQUAL("GB", ToCString(GB));
+    }
+}
diff --git a/library/cpp/deprecated/enum_codegen/ut/ya.make b/library/cpp/deprecated/enum_codegen/ut/ya.make
new file mode 100644
index 0000000000..32e7ad77a2
--- /dev/null
+++ b/library/cpp/deprecated/enum_codegen/ut/ya.make
@@ -0,0 +1,15 @@
+UNITTEST()
+
+OWNER(g:util)
+
+SRCDIR(library/cpp/deprecated/enum_codegen)
+
+PEERDIR(
+    library/cpp/deprecated/enum_codegen
+)
+
+SRCS(
+    enum_codegen_ut.cpp
+)
+
+END()
diff --git a/library/cpp/deprecated/enum_codegen/ya.make b/library/cpp/deprecated/enum_codegen/ya.make
new file mode 100644
index 0000000000..1df07d2192
--- /dev/null
+++ b/library/cpp/deprecated/enum_codegen/ya.make
@@ -0,0 +1,9 @@
+LIBRARY()
+
+OWNER(elric)
+
+SRCS(
+    enum_codegen.cpp
+)
+
+END()