diff options
Diffstat (limited to 'modules/print.cpp')
| -rw-r--r-- | modules/print.cpp | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/modules/print.cpp b/modules/print.cpp index ad39058b..2b07a27b 100644 --- a/modules/print.cpp +++ b/modules/print.cpp @@ -17,8 +17,10 @@ #include <js/RootingAPI.h> #include <js/TypeDecls.h> #include <js/Utility.h> // for UniqueChars +#include <js/Value.h> #include <jsapi.h> +#include "gjs/global.h" #include "gjs/jsapi-util.h" #include "modules/print.h" @@ -135,12 +137,38 @@ static bool gjs_printerr(JSContext* context, unsigned argc, JS::Value* vp) { return true; } +// The pretty-print functionality is best written in JS, but needs to be used +// from C++ code. This stores the prettyPrint() function in a slot on the global +// object so that it can be used internally by the Console module. +// This function is not available to user code. +GJS_JSAPI_RETURN_CONVENTION +static bool set_pretty_print_function(JSContext*, unsigned argc, + JS::Value* vp) { + JS::CallArgs args = JS::CallArgsFromVp(argc, vp); + + // can only be called internally, so OK to assert correct arguments + g_assert(args.length() == 2 && "setPrettyPrintFunction takes 2 arguments"); + + JS::Value v_global = args[0]; + JS::Value v_func = args[1]; + + g_assert(v_global.isObject() && "first argument must be an object"); + g_assert(v_func.isObject() && "second argument must be an object"); + + gjs_set_global_slot(&v_global.toObject(), GjsGlobalSlot::PRETTY_PRINT_FUNC, + v_func); + + args.rval().setUndefined(); + return true; +} + // clang-format off static constexpr JSFunctionSpec funcs[] = { JS_FN("log", gjs_log, 1, GJS_MODULE_PROP_FLAGS), JS_FN("logError", gjs_log_error, 2, GJS_MODULE_PROP_FLAGS), JS_FN("print", gjs_print, 0, GJS_MODULE_PROP_FLAGS), JS_FN("printerr", gjs_printerr, 0, GJS_MODULE_PROP_FLAGS), + JS_FN("setPrettyPrintFunction", set_pretty_print_function, 1, GJS_MODULE_PROP_FLAGS), JS_FS_END}; // clang-format on |