xenia/kakoune
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Context: do not permit access to window or buffer if null

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This commit is contained in:
Maxime Coste 2012-01-15 21:33:35 +00:00
parent a6930395b8
commit ae8882b0de
2 changed files with 33 additions and 19 deletions
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26
src/context.hh
View File

@ -8,15 +8,29 @@ namespace Kakoune
struct Context
{
Window* window;
Buffer* buffer;
Context()
: window(nullptr), buffer(nullptr) {}
: m_window(nullptr), m_buffer(nullptr) {}
Context(Window& window)
: window(&window), buffer(&window.buffer()) {}
: m_window(&window), m_buffer(&window.buffer()) {}
Context(Buffer& buffer)
: window(nullptr), buffer(&buffer) {}
: m_window(nullptr), m_buffer(&buffer) {}
Buffer& buffer() const
{
if (not m_buffer)
throw runtime_error("no buffer in context");
return *m_buffer;
}
Window& window() const
{
if (not m_window)
throw runtime_error("no window in context");
return *m_window;
}
public:
Window* m_window;
Buffer* m_buffer;
};
}

26
src/main.cc
View File

@ -429,7 +429,7 @@ void write_buffer(const CommandParameters& params, const Context& context)
if (params.size() > 1)
throw wrong_argument_count();
Buffer& buffer = context.window->buffer();
Buffer& buffer = context.window().buffer();
std::string filename = params.empty() ? buffer.name() : params[0];
write_buffer_to_file(buffer, filename);
@ -490,15 +490,15 @@ void add_highlighter(const CommandParameters& params, const Context& context)
if (params.size() < 3)
throw wrong_argument_count();
HighlighterGroup& group = context.window->get_highlighter_group(params[1]);
HighlighterGroup& group = context.window().get_highlighter_group(params[1]);
HighlighterParameters highlighter_params(params.begin()+3, params.end());
registry.add_highlighter_to_group(*context.window, group,
registry.add_highlighter_to_group(context.window(), group,
params[2], highlighter_params);
}
else
{
HighlighterParameters highlighter_params(params.begin()+1, params.end());
registry.add_highlighter_to_window(*context.window, params[0],
registry.add_highlighter_to_window(context.window(), params[0],
highlighter_params);
}
}
@ -513,7 +513,7 @@ void rm_highlighter(const CommandParameters& params, const Context& context)
if (params.size() != 1)
throw wrong_argument_count();
context.window->remove_highlighter(params[0]);
context.window().remove_highlighter(params[0]);
}
void add_filter(const CommandParameters& params, const Context& context)
@ -525,7 +525,7 @@ void add_filter(const CommandParameters& params, const Context& context)
{
FilterRegistry& registry = FilterRegistry::instance();
FilterParameters filter_params(params.begin()+1, params.end());
registry.add_filter_to_window(*context.window, params[0],
registry.add_filter_to_window(context.window(), params[0],
filter_params);
}
catch (runtime_error& err)
@ -539,7 +539,7 @@ void rm_filter(const CommandParameters& params, const Context& context)
if (params.size() != 1)
throw wrong_argument_count();
context.window->remove_filter(params[0]);
context.window().remove_filter(params[0]);
}
void add_hook(const CommandParameters& params, const Context& context)
@ -907,7 +907,7 @@ void exec_string(const CommandParameters& params,
{
auto it = keymap.find(key);
if (it != keymap.end())
it->second(*context.window, count);
it->second(context.window(), count);
count = 0;
}
}
@ -948,7 +948,7 @@ int main(int argc, char* argv[])
CommandManager::None,
PerArgumentCommandCompleter {
[&](const std::string& prefix, size_t cursor_pos)
{ return main_context.window->complete_highlighterid(prefix, cursor_pos); }
{ return main_context.window().complete_highlighterid(prefix, cursor_pos); }
});
command_manager.register_command(std::vector<std::string>{ "af", "addfilter" }, add_filter,
CommandManager::None,
@ -959,7 +959,7 @@ int main(int argc, char* argv[])
CommandManager::None,
PerArgumentCommandCompleter {
[&](const std::string& prefix, size_t cursor_pos)
{ return main_context.window->complete_filterid(prefix, cursor_pos); }
{ return main_context.window().complete_filterid(prefix, cursor_pos); }
});
command_manager.register_command(std::vector<std::string>{ "hook" }, add_hook, CommandManager::IgnoreSemiColons);
@ -989,7 +989,7 @@ int main(int argc, char* argv[])
auto buffer = (argc > 1) ? open_or_create(argv[1]) : new Buffer("*scratch*", Buffer::Type::Scratch);
main_context = Context(*buffer->get_or_create_window());
draw_window(*main_context.window);
draw_window(main_context.window());
int count = 0;
while(not quit_requested)
{
@ -1018,8 +1018,8 @@ int main(int argc, char* argv[])
auto it = keymap.find(key);
if (it != keymap.end())
{
it->second(*main_context.window, count);
draw_window(*main_context.window);
it->second(main_context.window(), count);
draw_window(main_context.window());
}
count = 0;
}