From 7fefac955a537da27e86f547a8c2450cc344d66f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vladim=C3=ADr=20Vondru=C5=A1?= <mosra@centrum.cz>
Date: Fri, 8 Mar 2019 23:04:11 +0100
Subject: [PATCH] Text: debug output for AbstractFont::Feature[s].

---
 src/Magnum/Text/AbstractFont.cpp          | 21 +++++++++++++++++++++
 src/Magnum/Text/AbstractFont.h            |  6 ++++++
 src/Magnum/Text/Test/AbstractFontTest.cpp | 22 +++++++++++++++++++++-
 3 files changed, 48 insertions(+), 1 deletion(-)

diff --git a/src/Magnum/Text/AbstractFont.cpp b/src/Magnum/Text/AbstractFont.cpp
index 7142be758..0c67e9093 100644
--- a/src/Magnum/Text/AbstractFont.cpp
+++ b/src/Magnum/Text/AbstractFont.cpp
@@ -238,6 +238,27 @@ Containers::Pointer<AbstractLayouter> AbstractFont::layout(const AbstractGlyphCa
     return doLayout(cache, size, text);
 }
 
+Debug& operator<<(Debug& debug, const AbstractFont::Feature value) {
+    switch(value) {
+        /* LCOV_EXCL_START */
+        #define _c(v) case AbstractFont::Feature::v: return debug << "Text::AbstractFont::Feature::" #v;
+        _c(OpenData)
+        _c(FileCallback)
+        _c(PreparedGlyphCache)
+        #undef _c
+        /* LCOV_EXCL_STOP */
+    }
+
+    return debug << "Text::AbstractFont::Feature(" << Debug::nospace << reinterpret_cast<void*>(UnsignedByte(value)) << Debug::nospace << ")";
+}
+
+Debug& operator<<(Debug& debug, const AbstractFont::Features value) {
+    return Containers::enumSetDebugOutput(debug, value, "Text::AbstractFont::Features{}", {
+        AbstractFont::Feature::OpenData,
+        AbstractFont::Feature::FileCallback,
+        AbstractFont::Feature::PreparedGlyphCache});
+}
+
 AbstractLayouter::AbstractLayouter(UnsignedInt glyphCount): _glyphCount(glyphCount) {}
 
 AbstractLayouter::~AbstractLayouter() = default;
diff --git a/src/Magnum/Text/AbstractFont.h b/src/Magnum/Text/AbstractFont.h
index ebe160363..519574aeb 100644
--- a/src/Magnum/Text/AbstractFont.h
+++ b/src/Magnum/Text/AbstractFont.h
@@ -528,6 +528,12 @@ class MAGNUM_TEXT_EXPORT AbstractFont: public PluginManager::AbstractPlugin {
 
 CORRADE_ENUMSET_OPERATORS(AbstractFont::Features)
 
+/** @debugoperatorclassenum{AbstractFont,AbstractFont::Feature} */
+MAGNUM_TEXT_EXPORT Debug& operator<<(Debug& debug, AbstractFont::Feature value);
+
+/** @debugoperatorclassenum{AbstractFont,AbstractFont::Features} */
+MAGNUM_TEXT_EXPORT Debug& operator<<(Debug& debug, AbstractFont::Features value);
+
 /**
 @brief Base for text layouters
 
diff --git a/src/Magnum/Text/Test/AbstractFontTest.cpp b/src/Magnum/Text/Test/AbstractFontTest.cpp
index 4628427b9..72b634f5d 100644
--- a/src/Magnum/Text/Test/AbstractFontTest.cpp
+++ b/src/Magnum/Text/Test/AbstractFontTest.cpp
@@ -85,6 +85,9 @@ struct AbstractFontTest: TestSuite::Tester {
     void createGlyphCacheNotSupported();
     void createGlyphCacheNotImplemented();
     void createGlyphCacheNoFont();
+
+    void debugFeature();
+    void debugFeatures();
 };
 
 AbstractFontTest::AbstractFontTest() {
@@ -131,7 +134,10 @@ AbstractFontTest::AbstractFontTest() {
               &AbstractFontTest::createGlyphCache,
               &AbstractFontTest::createGlyphCacheNotSupported,
               &AbstractFontTest::createGlyphCacheNotImplemented,
-              &AbstractFontTest::createGlyphCacheNoFont});
+              &AbstractFontTest::createGlyphCacheNoFont,
+
+              &AbstractFontTest::debugFeature,
+              &AbstractFontTest::debugFeatures});
 }
 
 void AbstractFontTest::openData() {
@@ -1022,6 +1028,20 @@ void AbstractFontTest::createGlyphCacheNoFont() {
     CORRADE_COMPARE(out.str(), "Text::AbstractFont::createGlyphCache(): no font opened\n");
 }
 
+void AbstractFontTest::debugFeature() {
+    std::ostringstream out;
+
+    Debug{&out} << AbstractFont::Feature::OpenData << AbstractFont::Feature(0xf0);
+    CORRADE_COMPARE(out.str(), "Text::AbstractFont::Feature::OpenData Text::AbstractFont::Feature(0xf0)\n");
+}
+
+void AbstractFontTest::debugFeatures() {
+    std::ostringstream out;
+
+    Debug{&out} << (AbstractFont::Feature::OpenData|AbstractFont::Feature::PreparedGlyphCache) << AbstractFont::Features{};
+    CORRADE_COMPARE(out.str(), "Text::AbstractFont::Feature::OpenData|Text::AbstractFont::Feature::PreparedGlyphCache Text::AbstractFont::Features{}\n");
+}
+
 }}}}
 
 CORRADE_TEST_MAIN(Magnum::Text::Test::AbstractFontTest)