Add uuid UDA type (#3827)

Mainly so that UDAs that refer to another task can be formated as
"short".

doc/man/taskrc.5.in

@@ -1384,7 +1384,7 @@ if you define a UDA named 'estimate', Taskwarrior will not know that this value
 is weeks, hours, minutes, money, or some other resource count.
 
 .TP
-.B uda.<name>.type=string|numeric|date|duration
+.B uda.<name>.type=string|numeric|uuid|date|duration
 .RS
 Defines a UDA called '<name>', of the specified type.
 .RE

src/Task.cpp

@@ -1999,7 +1999,7 @@ void Task::modify(modType type, bool text_required /* = false */) {
           // Delegate modification to the column object or their base classes.
           if (name == "depends" || name == "tags" || name == "recur" || column->type() == "date" ||
               column->type() == "duration" || column->type() == "numeric" ||
-              column->type() == "string") {
+              column->type() == "string" || column->type() == "uuid") {
             column->modify(*this, value);
             mods = true;
           }

src/columns/ColUDA.cpp

@@ -297,3 +297,23 @@ void ColumnUDADuration::render(std::vector<std::string>& lines, Task& task, int
 }
 
 ////////////////////////////////////////////////////////////////////////////////
+ColumnUDAUUID::ColumnUDAUUID() {
+  _name = "<uda>";
+  _type = "uuid";
+  _style = "long";
+  _label = "";
+  _modifiable = true;
+  _uda = true;
+  _styles = {"long", "short"};
+  _examples = {"f30cb9c3-3fc0-483f-bfb2-3bf134f00694", "f30cb9c3"};
+}
+
+////////////////////////////////////////////////////////////////////////////////
+bool ColumnUDAUUID::validate(const std::string& input) const {
+  Lexer lex(input);
+  std::string token;
+  Lexer::Type type;
+  return lex.isUUID(token, type, true);
+}
+
+////////////////////////////////////////////////////////////////////////////////

src/columns/ColUDA.h

@@ -31,6 +31,7 @@
 #include <ColTypeDuration.h>
 #include <ColTypeNumeric.h>
 #include <ColTypeString.h>
+#include <ColUUID.h>
 
 ////////////////////////////////////////////////////////////////////////////////
 class ColumnUDAString : public ColumnTypeString {
@@ -83,5 +84,12 @@ class ColumnUDADuration : public ColumnTypeDuration {
   std::vector<std::string> _values;
 };
 
+////////////////////////////////////////////////////////////////////////////////
+class ColumnUDAUUID : public ColumnUUID {
+ public:
+  ColumnUDAUUID();
+  bool validate(const std::string&) const;
+};
+
 #endif
 ////////////////////////////////////////////////////////////////////////////////

src/columns/Column.cpp

@@ -246,9 +246,15 @@ Column* Column::uda(const std::string& name) {
     c->_label = label;
     if (values != "") c->_values = split(values, ',');
     return c;
+  } else if (type == "uuid") {
+    auto c = new ColumnUDAUUID();
+    c->_name = name;
+    c->_label = label;
+    return c;
   } else if (type != "")
     throw std::string(
-        "User defined attributes may only be of type 'string', 'date', 'duration' or 'numeric'.");
+        "User defined attributes may only be of type 'string', 'uuid', date', 'duration' or "
+        "'numeric'.");
 
   return nullptr;
 }

test/columns.test.py

@@ -109,29 +109,26 @@ class TestUUIDFormats(TestCase):
     def setUpClass(cls):
         """Executed once before any test in the class"""
         cls.t = Task()
-        cls.t.config("report.xxx.columns", "id,uuid")
+        cls.t.config("report.xxx.columns", "uuid")
         cls.t.config("verbose", "nothing")
 
         cls.t("add zero")
         code, out, err = cls.t("_get 1.uuid")
         cls.uuid = out.strip()
 
-    def setUp(self):
-        """Executed before each test in the class"""
-
     def test_uuid_long(self):
         """Verify formatting of 'uuid.long' column"""
-        code, out, err = self.t("xxx rc.report.xxx.columns:id,uuid.long")
-        self.assertIn(self.uuid, out)
+        code, out, err = self.t("xxx rc.report.xxx.columns:uuid.long")
+        self.assertEqual(self.uuid, out.strip())
 
     def test_uuid_short(self):
         """Verify formatting of 'uuid.short' column"""
-        code, out, err = self.t("xxx rc.report.xxx.columns:id,uuid.short")
-        self.assertIn(self.uuid[:7], out)
+        code, out, err = self.t("xxx rc.report.xxx.columns:uuid.short")
+        self.assertEqual(self.uuid[:8], out.strip())
 
     def test_uuid_format_unrecognized(self):
         """Verify uuid.donkey formatting fails"""
-        code, out, err = self.t.runError("xxx rc.report.xxx.columns:id,uuid.donkey")
+        code, out, err = self.t.runError("xxx rc.report.xxx.columns:uuid.donkey")
         self.assertEqual(err, "Unrecognized column format 'uuid.donkey'\n")
 
 
@@ -482,6 +479,70 @@ start       active*           ✓
         """
 
 
+class TestUDAUUIDFormats(TestCase):
+    @classmethod
+    def setUpClass(cls):
+        """Executed once before any test in the class"""
+        cls.t = Task()
+        cls.t.config("verbose", "nothing")
+        cls.t.config("uda.uda_uuid.label", "uda_uuid")
+        cls.t.config("uda.uda_uuid.type", "uuid")
+        cls.t.config("report.xxx.columns", "uda_uuid")
+
+        cls.t("add zero")
+        code, out, err = cls.t("_get 1.uuid")
+        cls.t("add uda_uuid:{} one".format(out.strip()))
+        code, out, err = cls.t("_get 2.uda_uuid")
+        cls.uda_uuid = out.strip()
+
+    def test_uda_uuid_invalid_fails(self):
+        """Verify adding invalid uuid fails"""
+        code, out, err = self.t.runError("add uda_uuid:shrek three")
+        self.assertNotEqual(code, 0)
+        self.assertIn("uda_uuid", err.strip())
+        self.assertIn("shrek", err.strip())
+
+    def test_uda_uuid_long(self):
+        """Verify formatting of 'uda_uuid.long' column"""
+        code, out, err = self.t("2 xxx rc.report.xxx.columns:uda_uuid.long")
+        self.assertEqual(self.uda_uuid, out.strip())
+
+    def test_uda_uuid_short(self):
+        """Verify formatting of 'uda_uuid.short' column"""
+        code, out, err = self.t("2 xxx rc.report.xxx.columns:uda_uuid.short")
+        self.assertEqual(self.uda_uuid[:8], out.strip())
+
+    def test_uda_uuid_format_unrecognized(self):
+        """Verify uda_uuid.donkey formatting fails"""
+        code, out, err = self.t.runError("xxx rc.report.xxx.columns:id,uda_uuid.donkey")
+        self.assertEqual(err, "Unrecognized column format 'uda_uuid.donkey'\n")
+
+
+class TestUDAUUIDReconfiguredFromString(TestCase):
+    @classmethod
+    def setUpClass(cls):
+        """Executed once before any test in the class"""
+        cls.t = Task()
+        cls.t.config("verbose", "nothing")
+        cls.t.config("uda.uda_uuid.label", "uda_uuid")
+        cls.t.config("report.xxx.columns", "uda_uuid")
+
+        cls.t.config("uda.uda_uuid.type", "string")
+        cls.expected_str = 3 * "littlepigs"
+        cls.t("add uda_uuid:{} one".format(cls.expected_str))
+        cls.t.config("uda.uda_uuid.type", "uuid")
+
+    def test_uda_uuid_long(self):
+        """Verify formatting of 'uda_uuid.long' column"""
+        code, out, err = self.t("1 xxx rc.report.xxx.columns:uda_uuid.long")
+        self.assertEqual(self.expected_str, out.strip())
+
+    def test_uda_uuid_short(self):
+        """Verify formatting of 'uda_uuid.short' column"""
+        code, out, err = self.t("1 xxx rc.report.xxx.columns:uda_uuid.short")
+        self.assertEqual(self.expected_str[:8], out.strip())
+
+
 class TestFeature1061(TestCase):
     def setUp(self):
         """Executed before each test in the class"""