mirror of
https://github.com/fish-shell/fish-shell.git
synced 2025-01-21 04:52:01 +08:00
Factor out handling of readline_cmd_t::execute
This reduces the size of handle_readline_command. No functional change.
This commit is contained in:
ridiculousfish
parent
7fb4b7c8bd
commit
1dff1cb2c4
228
src/reader.cpp
228
src/reader.cpp
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@ -846,6 +846,10 @@ class reader_data_t : public std::enable_shared_from_this<reader_data_t> {
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maybe_t<char_event_t> read_normal_chars(readline_loop_state_t &rls);
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void handle_readline_command(readline_cmd_t cmd, readline_loop_state_t &rls);
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// Handle readline_cmd_t::execute. This may mean inserting a newline if the command is
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// unfinished.
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void handle_execute(readline_loop_state_t &rls);
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void clear_pager();
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void select_completion_in_direction(selection_motion_t dir,
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bool force_selection_change = false);
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@ -3563,118 +3567,8 @@ void reader_data_t::handle_readline_command(readline_cmd_t c, readline_loop_stat
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}
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break;
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}
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// Evaluate. If the current command is unfinished, or if the charater is escaped
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// using a backslash, insert a newline.
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case rl::execute: {
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// If the user hits return while navigating the pager, it only clears the pager.
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if (is_navigating_pager_contents()) {
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clear_pager();
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break;
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}
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// Delete any autosuggestion.
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autosuggestion.clear();
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// The user may have hit return with pager contents, but while not navigating them.
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// Clear the pager in that event.
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clear_pager();
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// We only execute the command line.
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editable_line_t *el = &command_line;
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// Allow backslash-escaped newlines.
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bool continue_on_next_line = false;
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if (el->position() >= el->size()) {
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// We're at the end of the text and not in a comment (issue #1225).
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continue_on_next_line =
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is_backslashed(el->text(), el->position()) && !text_ends_in_comment(el->text());
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} else {
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// Allow mid line split if the following character is whitespace (issue #613).
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if (is_backslashed(el->text(), el->position()) &&
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iswspace(el->text().at(el->position()))) {
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continue_on_next_line = true;
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// Check if the end of the line is backslashed (issue #4467).
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} else if (is_backslashed(el->text(), el->size()) &&
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!text_ends_in_comment(el->text())) {
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// Move the cursor to the end of the line.
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el->set_position(el->size());
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continue_on_next_line = true;
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}
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}
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// If the conditions are met, insert a new line at the position of the cursor.
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if (continue_on_next_line) {
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insert_char(el, L'\n');
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break;
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}
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// See if this command is valid.
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parser_test_error_bits_t command_test_result = 0;
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if (conf.syntax_check_ok) {
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command_test_result = reader_shell_test(parser(), el->text());
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}
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if (command_test_result == 0 || command_test_result == PARSER_TEST_INCOMPLETE) {
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// This command is valid, but an abbreviation may make it invalid. If so, we
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// will have to test again.
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if (expand_abbreviation_as_necessary(0)) {
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// Trigger syntax highlighting as we are likely about to execute this command.
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this->super_highlight_me_plenty();
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if (conf.syntax_check_ok) {
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command_test_result = reader_shell_test(parser(), el->text());
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}
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}
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}
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if (command_test_result == 0) {
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// Finished command, execute it. Don't add items in silent mode (#7230).
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wcstring text = command_line.text();
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if (text.empty()) {
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// Here the user just hit return. Make a new prompt, don't remove ephemeral
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// items.
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rls.finished = true;
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break;
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}
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// Historical behavior is to trim trailing spaces.
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// However, escaped spaces ('\ ') should not be trimmed (#7661)
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// This can be done by counting pre-trailing '\'
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// If there's an odd number, this must be an escaped space.
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while (!text.empty() && text.back() == L' ' &&
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count_preceding_backslashes(text, text.size() - 1) % 2 == 0) {
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text.pop_back();
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}
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if (history && !conf.in_silent_mode) {
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// Remove ephemeral items - even if the text is empty
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history->remove_ephemeral_items();
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if (!text.empty()) {
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// Mark this item as ephemeral if there is a leading space (#615).
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history_persistence_mode_t mode;
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if (text.front() == L' ') {
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// Leading spaces are ephemeral (#615).
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mode = history_persistence_mode_t::ephemeral;
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} else if (in_private_mode(vars)) {
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// Private mode means in-memory only.
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mode = history_persistence_mode_t::memory;
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} else {
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mode = history_persistence_mode_t::disk;
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}
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history_t::add_pending_with_file_detection(history, text, vars.snapshot(),
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mode);
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}
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}
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rls.finished = true;
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update_buff_pos(&command_line, command_line.size());
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} else if (command_test_result == PARSER_TEST_INCOMPLETE) {
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// We are incomplete, continue editing.
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insert_char(el, L'\n');
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} else {
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// Result must be some combination including an error. The error message will
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// already be printed, all we need to do is repaint.
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event_fire_generic(parser(), L"fish_posterror", {el->text()});
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screen.reset_abandoning_line(termsize_last().width);
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}
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this->handle_execute(rls);
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break;
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}
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@ -4248,6 +4142,118 @@ void reader_data_t::handle_readline_command(readline_cmd_t c, readline_loop_stat
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}
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}
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void reader_data_t::handle_execute(readline_loop_state_t &rls) {
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// Evaluate. If the current command is unfinished, or if the charater is escaped
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// using a backslash, insert a newline.
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// If the user hits return while navigating the pager, it only clears the pager.
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if (is_navigating_pager_contents()) {
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clear_pager();
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return;
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}
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// Delete any autosuggestion.
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autosuggestion.clear();
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// The user may have hit return with pager contents, but while not navigating them.
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// Clear the pager in that event.
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clear_pager();
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// We only execute the command line.
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editable_line_t *el = &command_line;
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// Allow backslash-escaped newlines.
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bool continue_on_next_line = false;
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if (el->position() >= el->size()) {
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// We're at the end of the text and not in a comment (issue #1225).
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continue_on_next_line =
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is_backslashed(el->text(), el->position()) && !text_ends_in_comment(el->text());
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} else {
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// Allow mid line split if the following character is whitespace (issue #613).
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if (is_backslashed(el->text(), el->position()) && iswspace(el->text().at(el->position()))) {
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continue_on_next_line = true;
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// Check if the end of the line is backslashed (issue #4467).
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} else if (is_backslashed(el->text(), el->size()) && !text_ends_in_comment(el->text())) {
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// Move the cursor to the end of the line.
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el->set_position(el->size());
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continue_on_next_line = true;
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}
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}
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// If the conditions are met, insert a new line at the position of the cursor.
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if (continue_on_next_line) {
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insert_char(el, L'\n');
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return;
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}
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// See if this command is valid.
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parser_test_error_bits_t command_test_result = 0;
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if (conf.syntax_check_ok) {
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command_test_result = reader_shell_test(parser(), el->text());
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}
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if (command_test_result == 0 || command_test_result == PARSER_TEST_INCOMPLETE) {
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// This command is valid, but an abbreviation may make it invalid. If so, we
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// will have to test again.
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if (expand_abbreviation_as_necessary(0)) {
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// Trigger syntax highlighting as we are likely about to execute this command.
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this->super_highlight_me_plenty();
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if (conf.syntax_check_ok) {
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command_test_result = reader_shell_test(parser(), el->text());
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}
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}
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}
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if (command_test_result == 0) {
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// Finished command, execute it. Don't add items in silent mode (#7230).
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wcstring text = command_line.text();
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if (text.empty()) {
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// Here the user just hit return. Make a new prompt, don't remove ephemeral
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// items.
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rls.finished = true;
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return;
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}
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// Historical behavior is to trim trailing spaces.
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// However, escaped spaces ('\ ') should not be trimmed (#7661)
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// This can be done by counting pre-trailing '\'
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// If there's an odd number, this must be an escaped space.
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while (!text.empty() && text.back() == L' ' &&
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count_preceding_backslashes(text, text.size() - 1) % 2 == 0) {
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text.pop_back();
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}
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if (history && !conf.in_silent_mode) {
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// Remove ephemeral items - even if the text is empty
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history->remove_ephemeral_items();
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if (!text.empty()) {
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// Mark this item as ephemeral if there is a leading space (#615).
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history_persistence_mode_t mode;
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if (text.front() == L' ') {
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// Leading spaces are ephemeral (#615).
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mode = history_persistence_mode_t::ephemeral;
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} else if (in_private_mode(this->vars())) {
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// Private mode means in-memory only.
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mode = history_persistence_mode_t::memory;
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} else {
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mode = history_persistence_mode_t::disk;
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}
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history_t::add_pending_with_file_detection(history, text, this->vars().snapshot(),
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mode);
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}
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}
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rls.finished = true;
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update_buff_pos(&command_line, command_line.size());
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} else if (command_test_result == PARSER_TEST_INCOMPLETE) {
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// We are incomplete, continue editing.
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insert_char(el, L'\n');
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} else {
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// Result must be some combination including an error. The error message will
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// already be printed, all we need to do is repaint.
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event_fire_generic(parser(), L"fish_posterror", {el->text()});
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screen.reset_abandoning_line(termsize_last().width);
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}
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}
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maybe_t<wcstring> reader_data_t::readline(int nchars_or_0) {
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using rl = readline_cmd_t;
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readline_loop_state_t rls{};
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