Gdb pretty printer for vwr::Vec.

.gitignore

@@ -2,3 +2,5 @@ tags
 cscope.out
 cscope.in.out
 cscope.po.out
+*.idea/
+*.pyc

CMakeLists.txt

@@ -26,6 +26,8 @@ target_include_directories(${PROJECT_NAME}
 	INTERFACE ${CMAKE_CURRENT_SOURCE_DIR}/lib/vectorwrapper/include
 )
 
+set(gdb_scripts_path "${CMAKE_CURRENT_SOURCE_DIR}/tools/gdb")
+
 #add_subdirectory(lib/sprout)
 add_subdirectory(src)
 add_subdirectory(test)

test/CMakeLists.txt

@@ -25,3 +25,5 @@ target_link_libraries(${PROJECT_NAME}
 	${SDL2_LIBRARIES}
 	${SDL2IMAGE_LIBRARIES}
 )
+
+configure_file(${gdb_scripts_path}/libdoorkeeper-gdb.py ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}-gdb.py)

tools/gdb/libdoorkeeper-gdb.py

@@ -0,0 +1,6 @@
+import sys;
+sys.path.append("@gdb_scripts_path@");
+
+import libdoorkeeper;
+
+libdoorkeeper.register_printers(gdb.current_objfile());

tools/gdb/libdoorkeeper.py

@@ -0,0 +1,37 @@
+import gdb;
+import re;
+
+class VectorWrapperPrinter:
+    def __init__(self, parVal):
+        self.val = parVal
+
+    def to_string(self):
+        sz = int(self.val["m_wrapped"].type.template_argument(1));
+        arr_vals = ", ".join(str(self.val["m_wrapped"]["_M_elems"][z]) for z in range(0, sz));
+        return "<{0}>".format(arr_vals);
+
+def vector_wrapper_match(parVal):
+    tag_value = str(parVal.type.strip_typedefs().tag);
+    if tag_value == None:
+        return None;
+
+    reg_vecbase = re.compile("^vwr::implem::VecBase<.*>$");
+    reg_vec = re.compile("^vwr::Vec<.*>$");
+    if reg_vecbase.match(tag_value) or reg_vec.match(tag_value):
+        return VectorWrapperPrinter(parVal);
+    else:
+        return None;
+
+def display_hint(self):
+    return "array";
+
+def register_printers(parObjfile):
+    parObjfile.pretty_printers.append(vector_wrapper_match);
+
+# (gdb) p parFrom
+# $1 = (const dk::Viewport<2u>::coords &) @0x7fffffffb810: {<vwr::implem::VecBase<std::array<int, 2ul> >> = {m_wrapped = {_M_elems = {0, 
+#         0}}}, <vwr::implem::VecAccessors<std::array<int, 2ul>, 2u>> = {<vwr::implem::Vec2Promotion<std::array<int, 2ul>, true>> = {<No data fields>}, <No data fields>}, static unit_x = <optimized out>, static unit_y = <optimized out>}
+
+# (gdb) p parFrom
+# $1 = (const dk::Viewport<2u>::coords &) @0x7fffffffb810: {<vwr::implem::VecBase<std::array<int, 2ul> >> = 
+#   {0, 0}, <vwr::implem::VecAccessors<std::array<int, 2ul>, 2u>> = {<vwr::implem::Vec2Promotion<std::array<int, 2ul>, true>> = {<No data fields>}, <No data fields>}, static unit_x = <optimized out>, static unit_y = <optimized out>}