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main.c
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/*
FUTURE FEATURES:
- more tests
- prepare rename support
- config variables
- bind key to series of commands
- convert macro to command list
- plugins?
- built-in plugins:
- "remove file..." menu
- auto-close brackets
- with macros we can really test performance of buffer_insert_text_at_pos, etc. (which should ideally be fast)
- better manual
- restart LSP server automatically?
- LSP request timeout
- reflow command
- editing files with invalid UTF-8
*/
/*
macros defining ted data directory locations.
the first character can be interpreted specially if it is one of the following:
~ home directory
^ user's AppData\Local directory (Windows only)
@ directory containing ted executable
*/
#ifndef TED_GLOBAL_DATA_DIR
#if _WIN32
#define TED_GLOBAL_DATA_DIR "@"
#else
#define TED_GLOBAL_DATA_DIR "/usr/share/ted"
#endif
#endif
#ifndef TED_LOCAL_DATA_DIR
#if _WIN32
#define TED_LOCAL_DATA_DIR "^/ted"
#else
#define TED_LOCAL_DATA_DIR "~/.local/share/ted"
#endif
#endif
#include "ted-internal.h"
#include <locale.h>
#include <signal.h>
#if __linux__
#include <execinfo.h>
#endif
#if __unix__
#include <unistd.h>
#endif
#if _WIN32
#include <shellapi.h>
#pragma comment(lib, "dbghelp.lib")
#pragma comment(lib, "ole32.lib")
#pragma comment(lib, "opengl32.lib")
#pragma comment(lib, "shell32.lib")
#pragma comment(lib, "ws2_32.lib")
#endif
#if !defined ONE_SOURCE && !defined DEBUG
#define ONE_SOURCE 1
#endif
#if PROFILE
#define PROFILE_FRAME 1
#endif
#if ONE_SOURCE
#include "util.c"
#if _WIN32
#include "os-win.c"
#elif __unix__
#include "os-posix.c"
#else
#error "Unrecognized operating system."
#endif
#include "gl.c"
#include "text.c"
#include "colors.c"
#include "syntax.c"
#include "buffer.c"
#include "ted.c"
#include "ui.c"
#include "find.c"
#include "node.c"
#include "build.c"
#include "tags.c"
#include "menu.c"
#include "ide-autocomplete.c"
#include "ide-signature-help.c"
#include "ide-rename-symbol.c"
#include "ide-hover.c"
#include "ide-definitions.c"
#include "ide-highlights.c"
#include "ide-usages.c"
#include "ide-document-link.c"
#include "ide-format.c"
#include "command.c"
#include "macro.c"
#include "config.c"
#include "session.c"
#include "lsp.c"
#include "lsp-json.c"
#include "lsp-write.c"
#include "lsp-parse.c"
#endif // ONE_SOURCE
static Rect message_box_rect(Ted *ted) {
Font *font = ted->font;
const Settings *settings = ted_active_settings(ted);
float padding = settings->padding;
float window_width = ted->window_width, window_height = ted->window_height;
float char_height = text_font_char_height(font);
return rect_centered((vec2){window_width * 0.5f, window_height * 0.9f},
(vec2){ted_get_menu_width(ted), 3 * char_height + 2 * padding});
}
#if DEBUG
static void APIENTRY gl_message_callback(GLenum source, GLenum type, unsigned int id, GLenum severity,
GLsizei length, const char *message, const void *userParam) {
(void)source; (void)type; (void)id; (void)length; (void)userParam;
if (severity == GL_DEBUG_SEVERITY_NOTIFICATION) return;
debug_println("Message from OpenGL: %s.", message);
}
#endif
#define CRASH_CRASH_MESSAGE "ted crashed while trying to handle a crash! yikes! ):"
#define CRASH_MESSAGE "ted has crashed ): Please send %s/log.txt to pommicket""@gmail.com if you want this fixed.", ted->local_data_dir
#define CRASH_STARTUP_MESSAGE "ted crashed when starting up ):"
static Ted *error_signal_handler_ted;
static bool signal_being_handled; // prevent infinite signal recursion
#if __unix__
static void error_signal_handler(int signum, siginfo_t *info, void *context) {
(void)context;
if (signal_being_handled)
die(CRASH_CRASH_MESSAGE);
signal_being_handled = true;
Ted *ted = error_signal_handler_ted;
if (ted) {
FILE *log = ted->log;
if (log) {
fprintf(log, "Signal %d: %s\n", signum, strsignal(signum));
fprintf(log, "errno = %d\n", info->si_errno);
fprintf(log, "code = %d\n", info->si_code);
fprintf(log, "address = 0x%llx\n", (unsigned long long)info->si_addr);
#if __linux__
int main(int, char **);
fprintf(log, "main address = %#llx\n", (unsigned long long)main);
fprintf(log, "utime = %lu\n", (unsigned long)info->si_utime);
fprintf(log, "stime = %lu\n", (unsigned long)info->si_stime);
fprintf(log, "address lsb = %d\n", info->si_addr_lsb);
fprintf(log, "lower bound = 0x%llx\n", (unsigned long long)info->si_lower);
fprintf(log, "lower bound = 0x%llx\n", (unsigned long long)info->si_upper);
fprintf(log, "syscall address = 0x%llx\n", (unsigned long long)info->si_call_addr);
fprintf(log, "syscall = 0x%d\n", info->si_syscall);
fprintf(log, "Backtrace:\n");
void *addresses[300] = {0};
int n_addresses = backtrace(addresses, (int)arr_count(addresses));
for (int i = 0; i < n_addresses; ++i) {
fprintf(log, " 0x%llx\n", (unsigned long long)addresses[i]);
}
#endif
fclose(log);
}
die(CRASH_MESSAGE);
} else {
die(CRASH_STARTUP_MESSAGE);
}
}
#elif _WIN32
static const char *windows_exception_to_str(DWORD exception_code) {
switch (exception_code) {
case EXCEPTION_ACCESS_VIOLATION: return "Access violation";
case EXCEPTION_ARRAY_BOUNDS_EXCEEDED: return "Array out of bounds";
case EXCEPTION_BREAKPOINT: return "Breakpoint";
case EXCEPTION_DATATYPE_MISALIGNMENT: return "Misaligned read or write";
case EXCEPTION_FLT_DENORMAL_OPERAND: return "Floating-point denormal operand";
case EXCEPTION_FLT_DIVIDE_BY_ZERO: return "Floating-point division by zero";
case EXCEPTION_FLT_INEXACT_RESULT: return "Floating-point inexact result";
case EXCEPTION_FLT_INVALID_OPERATION: return "Floating-point invalid operation";
case EXCEPTION_FLT_OVERFLOW: return "Floating-point overflow";
case EXCEPTION_FLT_STACK_CHECK: return "Floating-point stack over/underflow";
case EXCEPTION_FLT_UNDERFLOW: return "Floating-point underflow";
case EXCEPTION_ILLEGAL_INSTRUCTION: return "Illegal instruction";
case EXCEPTION_IN_PAGE_ERROR: return "Page not present";
case EXCEPTION_INT_DIVIDE_BY_ZERO: return "Integer divide by zero";
case EXCEPTION_INT_OVERFLOW: return "Integer overflow";
case EXCEPTION_INVALID_DISPOSITION: return "Invalid disposition";
case EXCEPTION_NONCONTINUABLE_EXCEPTION: return "Continue after non-continuable exception";
case EXCEPTION_PRIV_INSTRUCTION: return "Private instruction executed";
case EXCEPTION_SINGLE_STEP: return "Single step";
case EXCEPTION_STACK_OVERFLOW: return "Stack overflow";
}
return "Unknown exception";
}
static LONG WINAPI error_signal_handler(EXCEPTION_POINTERS *info) {
if (signal_being_handled)
die(CRASH_CRASH_MESSAGE);
signal_being_handled = true;
Ted *ted = error_signal_handler_ted;
if (ted) {
FILE *log = ted->log;
if (log) {
DWORD exception_code = info->ExceptionRecord->ExceptionCode;
fprintf(log, "Exception 0x%lx: %s.\n", (unsigned long)exception_code, windows_exception_to_str(exception_code));
fprintf(log, "Address: 0x%llx.\n", (unsigned long long)info->ExceptionRecord->ExceptionAddress);
fprintf(log, "Info0: 0x%llx.\n", (unsigned long long)info->ExceptionRecord->ExceptionInformation[0]);
fprintf(log, "Info1: 0x%llx.\n", (unsigned long long)info->ExceptionRecord->ExceptionInformation[1]);
fprintf(log, "Info2: 0x%llx.\n", (unsigned long long)info->ExceptionRecord->ExceptionInformation[2]);
#if _M_AMD64
CONTEXT *context = info->ContextRecord;
if (exception_code == EXCEPTION_STACK_OVERFLOW) {
// don't backtrace; just output current address
fprintf(log, "Instruction: 0x%llx\n", (unsigned long long)context->Rip);
} else {
fprintf(log, "Backtrace:\n");
HANDLE process = GetCurrentProcess(), thread = GetCurrentThread();
// backtrace
// this here was very helpful: https://gist.github.com/jvranish/4441299
if (SymInitialize(process, NULL, true)) {
STACKFRAME frame = {0};
frame.AddrPC.Offset = context->Rip;
frame.AddrStack.Offset = context->Rsp;
frame.AddrFrame.Offset = context->Rbp;
frame.AddrPC.Mode = frame.AddrStack.Mode = frame.AddrFrame.Mode = AddrModeFlat;
while (StackWalk(IMAGE_FILE_MACHINE_AMD64, process, thread,
&frame, context, NULL, SymFunctionTableAccess, SymGetModuleBase, NULL)) {
fprintf(log, "0x%llx\n", (unsigned long long)frame.AddrPC.Offset);
}
SymCleanup(process);
}
}
#endif
fclose(log);
}
die(CRASH_MESSAGE);
} else {
die(CRASH_STARTUP_MESSAGE);
}
// MSVC is smart here and realizes this code is unreachable.
// that said, I'm worried about not returning a value here for older MSVC versions
// and just in general.
#if _MSC_VER
#pragma warning(push)
#pragma warning(disable:4702)
#endif
return EXCEPTION_EXECUTE_HANDLER;
#if _MSC_VER
#pragma warning(pop)
#endif
}
#endif
static void ted_update_window_dimensions(Ted *ted) {
int w = 0, h = 0;
SDL_GetWindowSize(ted->window, &w, &h);
gl_window_width = ted->window_width = (float)w;
gl_window_height = ted->window_height = (float)h;
}
#if _WIN32
INT WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
PSTR lpCmdLine, INT nCmdShow) {
(void)hInstance; (void)hPrevInstance; (void)lpCmdLine; (void)nCmdShow;
int argc = 0;
LPWSTR* wide_argv = CommandLineToArgvW(GetCommandLineW(), &argc);
char** argv = calloc(argc + 1, sizeof *argv);
if (!argv) {
die("Out of memory.");
}
for (int i = 0; i < argc; i++) {
LPWSTR wide_arg = wide_argv[i];
int len = (int)wcslen(wide_arg);
int bufsz = len * 4 + 8;
argv[i] = calloc((size_t)bufsz, 1);
if (!argv[i]) die("Out of memory.");
WideCharToMultiByte(CP_UTF8, 0, wide_arg, len, argv[i], bufsz - 1, NULL, NULL);
}
LocalFree(wide_argv);
{
WSADATA wsaData = {0};
WSAStartup(MAKEWORD(2, 2), &wsaData);
}
SetProcessDPIAware();
#else
int main(int argc, char **argv) {
#endif
PROFILE_TIME(init_start)
PROFILE_TIME(basic_init_start)
#if __unix__
{
struct sigaction act = {0};
act.sa_sigaction = error_signal_handler;
act.sa_flags = SA_SIGINFO;
sigaction(SIGSEGV, &act, NULL);
sigaction(SIGFPE, &act, NULL);
sigaction(SIGABRT, &act, NULL);
sigaction(SIGILL, &act, NULL);
signal(SIGPIPE, SIG_IGN);
}
#elif _WIN32
SetUnhandledExceptionFilter(error_signal_handler);
#else
#error "Unrecognized operating system."
#endif
#if _WIN32
setlocale(LC_ALL, ".65001");
#else
setlocale(LC_ALL, "C.UTF-8");
#endif
command_init();
color_init();
syntax_init();
// read command-line arguments
int dash_dash = argc;
for (int i = 1; i < argc; ++i) {
if (streq(argv[i], "--")) {
dash_dash = i;
break;
}
}
bool test = false;
const char **starting_files = NULL;
for (int i = 1; i < dash_dash; ++i) {
if (streq(argv[i], "--help")) {
printf("%s\n", TED_VERSION_FULL);
printf("A text editor by pommicket.\n");
printf("For more information see https://github.com/pommicket/ted\n");
printf("\n");
printf("Usage: ted [--help] [--version] [--] [file names]\n");
exit(0);
} else if (streq(argv[i], "--version")) {
printf("%s\n", TED_VERSION_FULL);
exit(0);
}
#if DEBUG
else if (streq(argv[i], "--test")) {
test = true;
}
#endif
else if (argv[i][0] == '-') {
fprintf(stderr, "Unrecognized option: %s\n", argv[i]);
exit(EXIT_FAILURE);
} else {
arr_add(starting_files, argv[i]);
}
}
if (!test) {
for (int i = dash_dash + 1; i < argc; ++i) {
arr_add(starting_files, argv[i]);
}
}
PROFILE_TIME(basic_init_end)
PROFILE_TIME(sdl_start)
SDL_SetHint(SDL_HINT_NO_SIGNAL_HANDLERS, "1"); // if this program is sent a SIGTERM/SIGINT, don't turn it into a quit event
if (SDL_Init(SDL_INIT_VIDEO|SDL_INIT_TIMER) < 0)
die("%s", SDL_GetError());
PROFILE_TIME(sdl_end)
PROFILE_TIME(misc_start)
Ted *ted = calloc(1, sizeof *ted);
if (!ted) {
die("Not enough memory available to run ted.");
}
ted->last_save_time = -1e50;
ted->pid = process_get_id();
ted_update_time(ted);
// make sure signal handler has access to ted.
error_signal_handler_ted = ted;
os_get_cwd(ted->start_cwd, sizeof ted->start_cwd);
{ // get local and global data directory
#if _WIN32
char *appdata = NULL;
wchar_t *appdata_wide = NULL;
KNOWNFOLDERID id = FOLDERID_LocalAppData;
if (SHGetKnownFolderPath(&id, 0, NULL, &appdata_wide) == S_OK) {
size_t sz = wcslen(appdata_wide) * 4 + 1;
appdata = malloc(sz);
snprintf(appdata, sz, "%ls", appdata_wide);
CoTaskMemFree(appdata_wide); appdata_wide = NULL;
}
id = FOLDERID_Profile;
wchar_t *home_wide = NULL;
if (SHGetKnownFolderPath(&id, 0, NULL, &home_wide) == S_OK) {
strbuf_printf(ted->home, "%ls", home_wide);
CoTaskMemFree(home_wide);
}
WCHAR executable_wide_path[TED_PATH_MAX] = {0};
char executable_dir[TED_PATH_MAX] = {0};
if (GetModuleFileNameW(NULL, executable_wide_path, sizeof executable_wide_path - 1) > 0) {
WideCharToMultiByte(CP_UTF8, 0, executable_wide_path, -1, executable_dir, sizeof executable_dir, NULL, NULL);
char *last_backslash = strrchr(executable_dir, '\\');
if (last_backslash) {
*last_backslash = '\0';
}
}
#elif __unix__
char *home = getenv("HOME");
strbuf_printf(ted->home, "%s", home);
char executable_dir[TED_PATH_MAX] = {0};
ssize_t len = readlink("/proc/self/exe", executable_dir, sizeof executable_dir - 1);
if (len == -1) {
// some posix systems don't have /proc/self/exe. oh well.
} else {
executable_dir[len] = '\0';
char *last_slash = strrchr(executable_dir, '/');
if (last_slash) {
*last_slash = '\0';
// if we started in the directory where the executable is located,
// we're probably debugging ted, so search the start cwd for ted.cfg, etc.
ted->search_start_cwd = streq(ted->start_cwd, executable_dir);
}
}
#else
#error "unrecognized OS"
#endif
// replace special characters at start of data dirs
typedef struct {
const char *src;
char *dest;
size_t size;
} DataDir;
DataDir data_dirs[] = {
{.src = TED_LOCAL_DATA_DIR, .dest = ted->local_data_dir, .size = sizeof ted->local_data_dir},
{.src = TED_GLOBAL_DATA_DIR, .dest = ted->global_data_dir, .size = sizeof ted->global_data_dir},
};
for (size_t i = 0; i < arr_count(data_dirs); i++) {
const char *src = data_dirs[i].src;
char *dest = data_dirs[i].dest;
size_t size = data_dirs[i].size;
if (!src[0] || !strchr(ALL_PATH_SEPARATORS, src[1])) goto absolute_path;
switch (src[0]) {
case '~':
str_printf(dest, size, "%s%s", ted->home, src + 1);
break;
#if _WIN32
case '^':
str_printf(dest, size, "%s%s", appdata, src + 1);
break;
#endif
case '@':
str_printf(dest, size, "%s%s", executable_dir, src + 1);
break;
default:
absolute_path:
if (!path_is_absolute(src)) {
die("Data directory %s is not an absolute path", src);
}
str_cpy(dest, size, src);
}
// ensure we always use the same path separator
for (int c = 0; dest[c]; c++) {
if (strchr(ALL_PATH_SEPARATORS, dest[c]))
dest[c] = PATH_SEPARATOR;
}
}
if (fs_path_type(ted->global_data_dir) == FS_NON_EXISTENT) {
die("Couldn't open ted data directory at %s", ted->global_data_dir);
}
if (fs_path_type(ted->local_data_dir) == FS_NON_EXISTENT)
fs_mkdir(ted->local_data_dir);
#if _WIN32
free(appdata);
#endif
}
{
// open log file
char log_filename[TED_PATH_MAX];
char log1_filename[TED_PATH_MAX];
strbuf_printf(log_filename, "%s/log.txt", ted->local_data_dir);
strbuf_printf(log1_filename, "%s/log.1.txt", ted->local_data_dir);
if (fs_file_size(log_filename) > 500000) {
remove(log1_filename);
rename(log_filename, log1_filename);
}
ted->log = fopen(log_filename, "a");
ted_log(ted, "starting ted\n");
}
{ // get current working directory
os_get_cwd(ted->cwd, sizeof ted->cwd);
}
#if TED_FORCE_SEARCH_START_CWD
// override whether or not we are in the executable's directory
// (for testing on Unix systems without /proc)
ted->search_start_cwd = true;
#endif
PROFILE_TIME(misc_end)
PROFILE_TIME(window_start)
SDL_Window *window = SDL_CreateWindow("ted", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 1280, 720,
(test ? SDL_WINDOW_HIDDEN : SDL_WINDOW_SHOWN)|SDL_WINDOW_OPENGL|SDL_WINDOW_RESIZABLE);
if (!window)
die("%s", SDL_GetError());
ted->window = window;
{ // set icon
char icon_filename[TED_PATH_MAX];
if (ted_get_file(ted, "assets/icon.bmp", icon_filename, sizeof icon_filename)) {
SDL_Surface *icon = SDL_LoadBMP(icon_filename);
SDL_SetWindowIcon(window, icon);
SDL_FreeSurface(icon);
} // if we can't find the icon file, it's no big deal
}
PROFILE_TIME(window_end)
PROFILE_TIME(gl_start)
SDL_GLContext *glctx = NULL;
{ // get OpenGL context
int gl_versions[][2] = {
{4,3},
{3,0},
{2,0},
{0,0},
};
for (int i = 0; gl_versions[i][0]; ++i) {
gl_version_major = gl_versions[i][0];
gl_version_minor = gl_versions[i][1];
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, gl_version_major);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, gl_version_minor);
#if DEBUG
SDL_GL_SetAttribute(SDL_GL_CONTEXT_FLAGS, SDL_GL_CONTEXT_DEBUG_FLAG);
#endif
glctx = SDL_GL_CreateContext(window);
if (glctx) {
break;
} else {
debug_println("Couldn't get GL %d.%d context. Falling back to %d.%d.",
gl_versions[i][0], gl_versions[i][1], gl_versions[i+1][0], gl_versions[i+1][1]);
}
}
if (!glctx)
die("%s", SDL_GetError());
gl_get_procs();
}
#if DEBUG
if (gl_version_major * 100 + gl_version_minor >= 403) {
GLint flags = 0;
glGetIntegerv(GL_CONTEXT_FLAGS, &flags);
glEnable(GL_DEBUG_OUTPUT);
glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS);
if (flags & GL_CONTEXT_FLAG_DEBUG_BIT) {
// set up debug message callback
glDebugMessageCallback(gl_message_callback, NULL);
glDebugMessageControl(GL_DONT_CARE, GL_DONT_CARE, GL_DONT_CARE, 0, NULL, GL_TRUE);
}
}
#endif
ted->file_selector = file_selector_new();
gl_geometry_init();
text_init();
menu_init(ted);
find_init(ted);
macros_init(ted);
definitions_init(ted);
autocomplete_init(ted);
format_init(ted);
signature_help_init(ted);
usages_init(ted);
highlights_init(ted);
hover_init(ted);
rename_symbol_init(ted);
document_link_init(ted);
PROFILE_TIME(gl_end)
PROFILE_TIME(configs_start)
ted_load_configs(ted);
PROFILE_TIME(configs_end)
PROFILE_TIME(fonts_start)
ted_load_fonts(ted);
PROFILE_TIME(fonts_end)
PROFILE_TIME(create_start)
{
TextBuffer *lbuffer = ted->line_buffer = line_buffer_new(ted);
if (!lbuffer || buffer_has_error(lbuffer))
die("Error creating line buffer: %s", buffer_get_error(lbuffer));
}
ted->find_buffer = line_buffer_new(ted);
ted->replace_buffer = line_buffer_new(ted);
ted->argument_buffer = line_buffer_new(ted);
ted->build_buffer = buffer_new(ted);
buffer_new_file(ted->build_buffer, NULL);
for (u32 i = 0; i < arr_len(starting_files); ++i) {
const char *filename = starting_files[i];
if (filename) {
if (fs_file_exists(filename)) {
ted_open_file(ted, filename);
} else {
ted_new_file(ted, filename);
}
}
}
if (!test && arr_len(starting_files) == 0) {
session_read(ted);
}
arr_free(starting_files);
ted->cursor_ibeam = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_IBEAM);
ted->cursor_wait = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_WAIT);
ted->cursor_arrow = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_ARROW);
ted->cursor_resize_h = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZEWE);
ted->cursor_resize_v = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENS);
ted->cursor_hand = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_HAND);
ted->cursor_move = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZEALL);
PROFILE_TIME(create_end)
PROFILE_TIME(get_ready_start)
Uint32 time_at_last_frame = SDL_GetTicks();
SDL_GL_SetSwapInterval(1); // vsync
PROFILE_TIME(get_ready_end)
PROFILE_TIME(init_end)
#if PROFILE
print("Initialization: %.1fms\n", 1000 * (init_end - init_start));
print(" - Basic init: %.1fms\n", 1000 * (basic_init_end - basic_init_start));
print(" - SDL: %.1fms\n", 1000 * (sdl_end - sdl_start));
print(" - SDL window: %.1fms\n", 1000 * (window_end - window_start));
print(" - Create: %.1fms\n", 1000 * (create_end - create_start));
print(" - OpenGL: %.1fms\n", 1000 * (gl_end - gl_start));
print(" - misc: %.1fms\n", 1000 * (misc_end - misc_start));
print(" - Loading fonts: %.1fms\n", 1000 * (fonts_end - fonts_start));
print(" - Read configs: %.1fms\n", 1000 * (configs_end - configs_start));
print(" - Get ready: %.1fms\n", 1000 * (get_ready_end - get_ready_start));
#endif
{
// clear event queue
// this is probably only a problem for me, but
// some events that the WM should have consumed
// are going to ted
SDL_Event event;
while (SDL_PollEvent(&event));
}
double start_time = time_get_seconds();
double scroll_wheel_text_size_change = 0.0;
while (!ted->quit) {
ted_update_time(ted);
double frame_start = ted->frame_time;
SDL_PumpEvents();
u32 key_modifier = ted_get_key_modifier(ted);
{ // get mouse position
int mouse_x = 0, mouse_y = 0;
ted->mouse_state = SDL_GetMouseState(&mouse_x, &mouse_y);
ted->mouse_pos = (vec2){(float)mouse_x, (float)mouse_y};
}
for (size_t i = 0; i < arr_count(ted->mouse_clicks); ++i)
arr_clear(ted->mouse_clicks[i]);
for (size_t i = 0; i < arr_count(ted->mouse_releases); ++i)
arr_clear(ted->mouse_releases[i]);
ted->scroll_total_x = ted->scroll_total_y = 0;
ted_update_window_dimensions(ted);
{
const Settings *active_settings = ted_active_settings(ted);
// we don't properly handle variable-width fonts
text_font_set_force_monospace(ted->font, active_settings->force_monospace);
text_font_set_force_monospace(ted->font_bold, active_settings->force_monospace);
}
SDL_Event event;
while (SDL_PollEvent(&event)) {
TextBuffer *buffer = ted->active_buffer;
switch (event.type) {
case SDL_QUIT:
command_execute(ted, CMD_QUIT, 1);
break;
case SDL_MOUSEWHEEL: {
if (ted_is_ctrl_down(ted)) {
// adjust text size with ctrl+scroll
const Settings *settings = ted_active_settings(ted);
scroll_wheel_text_size_change += settings->ctrl_scroll_adjust_text_size * event.wheel.preciseY;
} else if (key_modifier == 0) {
// scroll with mouse wheel
Sint32 dx = event.wheel.x, dy = -event.wheel.y;
if (autocomplete_box_contains_point(ted, ted_mouse_pos(ted))) {
autocomplete_scroll(ted, dy);
} else {
ted->scroll_total_x += dx;
ted->scroll_total_y += dy;
}
}
} break;
case SDL_MOUSEBUTTONDOWN: {
if (ted->recording_macro)
break; // ignore mouse input during macros
Uint32 button = event.button.button;
u8 times = event.button.clicks; // number of clicks
float x = (float)event.button.x, y = (float)event.button.y;
if (button == SDL_BUTTON_X1) {
ted_press_key(ted, KEYCODE_X1, key_modifier);
} else if (button == SDL_BUTTON_X2) {
ted_press_key(ted, KEYCODE_X2, key_modifier);
}
if (button >= arr_count(ted->mouse_clicks)) break;
vec2 pos = {x, y};
bool add = true;
if (*ted->message_shown) {
if (rect_contains_point(message_box_rect(ted), pos)) {
// clicked on message
if (button == SDL_BUTTON_LEFT) {
// dismiss message
*ted->message_shown = '\0';
}
// don't let anyone else use this event
add = false;
}
}
if (add) {
// handle mouse click
// we need to do this here, and not in buffer_render, because ctrl+click (go to definition)
// could switch to a different buffer.
// line buffer click handling, IS done in buffer_render (yes this is less than ideal)
if (!menu_is_any_open(ted)) {
arr_foreach_ptr(ted->nodes, NodePtr, pnode) {
Node *node = *pnode;
TextBuffer *tab = node_get_tab(node, node_active_tab(node));
if (tab) {
if (buffer_handle_click(ted, tab, pos, times)) {
add = false;
break;
}
}
}
if (add && ted->build_shown)
if (buffer_handle_click(ted, ted->build_buffer, pos, times)) // handle build buffer clicks
add = false;
}
}
if (add) {
MouseClick click = {
.pos = pos,
.times = times,
};
arr_add(ted->mouse_clicks[button], click);
}
} break;
case SDL_MOUSEBUTTONUP: {
if (ted->recording_macro)
break; // ignore mouse input during macros
Uint8 button = event.button.button;
if (button >= arr_count(ted->mouse_releases)) break;
vec2 pos = {(float)event.button.x, (float)event.button.y};
MouseRelease release = {
.pos = pos
};
arr_add(ted->mouse_releases[button], release);
} break;
case SDL_MOUSEMOTION: {
if (ted->recording_macro)
break; // ignore mouse input during macros
float x = (float)event.motion.x, y = (float)event.motion.y;
if (ted->drag_buffer != ted->active_buffer)
ted->drag_buffer = NULL;
if (ted->drag_buffer) {
BufferPos pos = {0};
// drag to select
// we don't check the return value here, because it's okay to drag off the screen.
buffer_pixels_to_pos(ted->drag_buffer, (vec2){x, y}, &pos);
buffer_select_to_pos(ted->drag_buffer, pos);
}
hover_reset_timer(ted);
} break;
case SDL_KEYDOWN: {
SDL_Keycode keycode = event.key.keysym.sym;
SDL_Keymod modifier = event.key.keysym.mod;
ted_press_key(ted, keycode, modifier);
} break;
case SDL_TEXTINPUT: {
const char *text = event.text.text;
if (buffer
// unfortunately, some key combinations like ctrl+minus still register as a "-" text input event
&& (key_modifier & ~KEY_MODIFIER_SHIFT) == 0) {
// insert the text
command_execute_string_argument(ted, CMD_INSERT_TEXT, text);
// check for trigger character
LSP *lsp = buffer_lsp(buffer);
const Settings *settings = buffer_settings(buffer);
if (lsp && settings->trigger_characters) {
u32 last_code_point = (u32)strlen(text) - 1;
while (last_code_point > 0 &&
unicode_is_continuation_byte((u8)text[last_code_point]))
--last_code_point;
char32_t last_char = 0;
unicode_utf8_to_utf32(&last_char, &text[last_code_point],
strlen(text) - last_code_point);
arr_foreach_ptr(lsp_completion_trigger_chars(lsp), const char32_t, c) {
if (*c == last_char) {
autocomplete_open(ted, last_char);
break;
}
}
// NOTE: we are not checking for signature help trigger
// characters because currently we ask for signature
// help any time a character is inserted.
if (is32_word(last_char)
&& !is32_digit(last_char)) {
if (settings->identifier_trigger_characters) {
autocomplete_open(ted, last_char);
}
}
}
}
} break;
}
}
{
int mx = 0, my = 0;
ted->mouse_state = SDL_GetMouseState(&mx, &my);
ted->mouse_pos = (vec2){(float)mx, (float)my};
}
// default to arrow cursor
ted->cursor = ted->cursor_arrow;
if (!(ted->mouse_state & SDL_BUTTON_LMASK)) {
// originally this was done on SDL_MOUSEBUTTONUP events but for some reason
// I was getting a bunch of those even when I was holding down the mouse.
// This makes it much smoother.
ted->drag_buffer = NULL;
}
{ // ted->cwd should be the directory containing the last active buffer
TextBuffer *buffer = ted->active_buffer;
if (buffer) {
if (buffer_is_named_file(buffer)) {
const char *buffer_path = buffer_get_path(buffer);
assert(*buffer_path);
char *last_sep = strrchr(buffer_path, PATH_SEPARATOR);
if (last_sep) {
size_t dirname_len = (size_t)(last_sep - buffer_path);
if (dirname_len == 0) dirname_len = 1; // make sure "/x" sets our cwd to "/", not ""
// set cwd to buffer's directory
memcpy(ted->cwd, buffer_path, dirname_len);
ted->cwd[dirname_len] = 0;
}
}
}
}
// check if active buffer should be reloaded
{
TextBuffer *active_buffer = ted->active_buffer;
if (active_buffer && buffer_externally_changed(active_buffer)) {
if (buffer_settings(active_buffer)->auto_reload)
buffer_reload(active_buffer);
else {
buffer_display_filename(active_buffer, ted->ask_reload, sizeof ted->ask_reload);
menu_open(ted, MENU_ASK_RELOAD);
}
}
}
double frame_dt;
{
Uint32 time_this_frame = SDL_GetTicks();
frame_dt = 0.001 * (time_this_frame - time_at_last_frame);
time_at_last_frame = time_this_frame;
}
{
// when the user ctrl+scrolls, only actually change the text size
// every 100ms, to avoid loading the font over and over again super fast
static double last_font_adjust = 0;
if (ted->frame_time - last_font_adjust > 0.1) {
last_font_adjust = ted->frame_time;
int dsize = (int)floor(scroll_wheel_text_size_change);
command_execute(ted, CMD_TEXT_SIZE_INCREASE, dsize);
scroll_wheel_text_size_change -= dsize;
}
}
TextBuffer *active_buffer = ted->active_buffer;
if (active_buffer && key_modifier == KEY_MODIFIER_ALT) {
// alt + arrow keys to scroll
double scroll_speed = 40.0;
double scroll_amount_x = scroll_speed * frame_dt * 1.5; // characters are taller than they are wide
double scroll_amount_y = scroll_speed * frame_dt;
if (ted_is_key_down(ted, SDLK_UP))
buffer_scroll(active_buffer, 0, -scroll_amount_y);
if (ted_is_key_down(ted, SDLK_DOWN))
buffer_scroll(active_buffer, 0, +scroll_amount_y);
if (ted_is_key_down(ted, SDLK_LEFT))
buffer_scroll(active_buffer, -scroll_amount_x, 0);
if (ted_is_key_down(ted, SDLK_RIGHT))
buffer_scroll(active_buffer, +scroll_amount_x, 0);
}
if (menu_is_any_open(ted)) {
menu_update(ted);
}
for (int i = 0; ted->lsps[i]; ++i) {
LSP *lsp = ted->lsps[i];
LSPMessage message = {0};
while (lsp_next_message(lsp, &message)) {
switch (message.type) {
case LSP_REQUEST: {
LSPRequest *r = &message.request;
switch (r->type) {
case LSP_REQUEST_SHOW_MESSAGE: {
LSPRequestMessage *m = &r->data.message;
MessageType type = ted_message_type_from_lsp(m->type);
ted_set_message(ted, type, "%s", lsp_request_string(r, m->message));
} break;
case LSP_REQUEST_LOG_MESSAGE: {
LSPRequestMessage *m = &r->data.message;
ted_log(ted, "%s\n", lsp_request_string(r, m->message));
} break;
case LSP_REQUEST_PUBLISH_DIAGNOSTICS: {
ted_process_publish_diagnostics(ted, lsp, r);
} break;
default: break;
}
} break;
case LSP_RESPONSE: {
LSPResponse *r = &message.response;
if (!lsp_string_is_empty(r->error)) {
ted_log(ted, "LSP error: %s\n", lsp_response_string(r, r->error));
}
// this is a bit spammy
// sometimes clang is just like "this request was cancelled cuz the cursor moved"
//ted_error(ted, "LSP error: %s", lsp_response_string(r, r->error));
// it's important that we send error responses here too.
// we don't want to be waiting around for a response that's never coming.
autocomplete_process_lsp_response(ted, r);
format_process_lsp_response(ted, r);
signature_help_process_lsp_response(ted, r);
hover_process_lsp_response(ted, r);
definitions_process_lsp_response(ted, lsp, r);
highlights_process_lsp_response(ted, r);
usages_process_lsp_response(ted, r);
document_link_process_lsp_response(ted, r);
rename_symbol_process_lsp_response(ted, r);
} break;
}
lsp_message_free(&message);
}