add gdb pretty printers

.drone.star

@@ -26,6 +26,7 @@ def main(ctx):
   linux_cxx("UBSan GCC", "g++-12", packages="g++-12", buildscript="drone", buildtype="boost", image="cppalliance/droneubuntu2204:1", environment={'COMMENT': 'ubsan', 'B2_VARIANT': 'debug', 'B2_TOOLSET': 'gcc-12', 'B2_CXXSTD': '11,14,17', 'B2_UBSAN': '1', 'B2_DEFINES': 'define=BOOST_NO_STRESS_TEST=1', 'B2_LINKFLAGS': '-fuse-ld=gold'}, globalenv=globalenv),
   linux_cxx("UBSan Clang", "clang++-14", packages="clang-14 libstdc++-10-dev", buildtype="boost", buildscript="drone", image="cppalliance/droneubuntu2204:1", environment={'COMMENT': 'ubsan', 'B2_VARIANT': 'debug', 'B2_TOOLSET': 'clang-14', 'B2_CXXSTD': '11,14,17', 'B2_UBSAN': '1', 'B2_DEFINES': 'define=BOOST_NO_STRESS_TEST=1'}, globalenv=globalenv),
   linux_cxx("TSan", "g++-12", packages="g++-12", buildscript="drone", buildtype="boost", image="cppalliance/droneubuntu2204:1", environment={'COMMENT': 'tsan', 'B2_VARIANT': 'debug', 'B2_TOOLSET': 'gcc-12', 'B2_CXXSTD': '11,14,17', 'B2_TSAN': '1', 'B2_DEFINES': 'BOOST_NO_STRESS_TEST=1'}, globalenv=globalenv, privileged=True),
+  linux_cxx("GDB printers", "g++-12", packages="g++-12 gdb", buildscript="drone", buildtype="boost", image="cppalliance/droneubuntu2204:1", environment={'COMMENT': 'gdb', 'B2_TOOLSET': 'gcc-12', 'B2_CXXSTD': '11,14,17', 'B2_TARGETS': 'libs/json/test//gdb-printers', 'B2_VARIANT': 'debug', 'B2_DEFINES': 'BOOST_NO_STRESS_TEST=1'}, globalenv=globalenv),
   linux_cxx("gcc 4.8 C++03 (no op)", "g++-4.8", packages="g++-4.8", image=linuxglobalimage, buildtype="boost", buildscript="drone", environment={"B2_TOOLSET": "gcc-4.8", "B2_CXXSTD": "03", 'B2_SEPARATE_BOOTSTRAP': '1'}, globalenv=globalenv),
   linux_cxx("gcc 4.8", "g++-4.8", packages="g++-4.8", buildtype="boost", buildscript="drone", image=linuxglobalimage, environment={'B2_TOOLSET': 'gcc-4.8', 'B2_CXXSTD': '11', 'B2_SEPARATE_BOOTSTRAP': '1', 'DRONE_JOB_UUID': '0ade7c2cf9', 'B2_FLAGS': 'warnings=extra warnings-as-errors=on define=BOOST_JSON_ALLOW_DEPRECATED'}, globalenv=globalenv),
   linux_cxx("gcc 4.9", "g++-4.9", buildtype="boost", buildscript="drone", image=linuxglobalimage, environment={'B2_TOOLSET': 'gcc-4.9', 'B2_CXXSTD': '11', 'B2_SEPARATE_BOOTSTRAP': '1', 'DRONE_JOB_UUID': 'b1d5781111', 'B2_FLAGS': 'warnings=extra warnings-as-errors=on define=BOOST_JSON_ALLOW_DEPRECATED'}, globalenv=globalenv),

.drone/drone.sh

@@ -87,6 +87,8 @@ common_install
 
 echo '==================================> SCRIPT'
 
+printf "add-auto-load-safe-path $PWD/bin.v2\n" > ~/.gdbinit
+
 export B2_TARGETS=${B2_TARGETS:-"libs/$SELF/test libs/$SELF/example"}
 $BOOST_ROOT/libs/$SELF/ci/travis/build.sh
 

CMakeLists.txt

@@ -51,6 +51,16 @@ if(BOOST_JSON_IS_ROOT)
     unset(CMAKE_FOLDER)
 endif()
 
+list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/pretty_printers")
+find_package(BoostPrettyPrinters QUIET)
+if(BoostPrettyPrinters_FOUND)
+    boost_pretty_printers_gdb_python_header(
+        TARGET boost_json_regenerate_printers
+        INPUT src/boost_json_gdb_printers.py
+        OUTPUT include/boost/json/detail/gdb_printers.hpp
+        HEADER_GUARD BOOST_JSON_DETAIL_GDB_PRINTERS_HPP
+        EXCLUDE_FROM_ALL)
+endif()
 
 function(boost_json_setup_properties target)
     if(MSVC)

build.jam

@@ -5,6 +5,11 @@
 
 require-b2 5.2 ;
 
+import path ;
+import-search [ path.join $(__file__:D) pretty_printers ] ;
+
+using boost-pretty-printers ;
+
 constant boost_dependencies :
     /boost/align//boost_align
     /boost/assert//boost_assert

build/Jamfile

@@ -8,9 +8,11 @@
 # Official repository: https://github.com/boostorg/json
 #
 
-import modules ;
 import-search /boost/config/checks ;
+
+import boost-pretty-printers ;
 import config ;
+import modules ;
 
 # These make sure we only build on compatible C++11 or later toolchains.
 obj cxx11_basic_alignas : ../check/basic_alignas.cpp ;
@@ -82,3 +84,12 @@ project
 alias json_deps ;
 alias json_sources : src.cpp ;
 lib boost_json : json_sources ;
+
+boost-pretty-printers.gdb-python-header gdb_printers.hpp
+    : boost_json_gdb_printers.py
+    : <location>../include/boost/json/detail
+      <flags>--header-guard=BOOST_JSON_DETAIL_GDB_PRINTERS_HPP
+    ;
+always gdb_printers.hpp ;
+explicit regenerate-printers gdb_printers.hpp ;
+alias regenerate-printers : gdb_printers.hpp ;

include/boost/json/detail/config.hpp

@@ -233,4 +233,6 @@ constexpr T static_const<T>::value;
 # define BOOST_JSON_DEPRECATED(x)
 #endif
 
+#include <boost/json/detail/gdb_printers.hpp>
+
 #endif