forked from cory/tildefriends
Cory McWilliams
d6018736d5
git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@3423 ed5197a5-7fde-0310-b194-c3ffbd925b24
1508 lines
46 KiB
JavaScript
1508 lines
46 KiB
JavaScript
/*
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* QuickJS Read Eval Print Loop
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*
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* Copyright (c) 2017-2019 Fabrice Bellard
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* Copyright (c) 2017-2019 Charlie Gordon
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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"use strip";
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import * as std from "std";
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import * as os from "os";
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(function(g) {
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/* add 'os' and 'std' bindings */
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g.os = os;
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g.std = std;
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/* close global objects */
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var Object = g.Object;
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var String = g.String;
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var Array = g.Array;
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var Date = g.Date;
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var Math = g.Math;
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var isFinite = g.isFinite;
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var parseFloat = g.parseFloat;
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/* XXX: use preprocessor ? */
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var config_numcalc = (typeof os.open === "undefined");
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var has_jscalc = (typeof Fraction === "function");
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var has_bignum = (typeof BigFloat === "function");
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var colors = {
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none: "\x1b[0m",
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black: "\x1b[30m",
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red: "\x1b[31m",
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green: "\x1b[32m",
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yellow: "\x1b[33m",
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blue: "\x1b[34m",
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magenta: "\x1b[35m",
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cyan: "\x1b[36m",
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white: "\x1b[37m",
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gray: "\x1b[30;1m",
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grey: "\x1b[30;1m",
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bright_red: "\x1b[31;1m",
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bright_green: "\x1b[32;1m",
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bright_yellow: "\x1b[33;1m",
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bright_blue: "\x1b[34;1m",
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bright_magenta: "\x1b[35;1m",
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bright_cyan: "\x1b[36;1m",
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bright_white: "\x1b[37;1m",
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};
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var styles;
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if (config_numcalc) {
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styles = {
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'default': 'black',
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'comment': 'white',
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'string': 'green',
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'regex': 'cyan',
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'number': 'green',
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'keyword': 'blue',
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'function': 'gray',
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'type': 'bright_magenta',
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'identifier': 'yellow',
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'error': 'bright_red',
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'result': 'black',
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'error_msg': 'bright_red',
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};
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} else {
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styles = {
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'default': 'bright_green',
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'comment': 'white',
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'string': 'bright_cyan',
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'regex': 'cyan',
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'number': 'green',
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'keyword': 'bright_white',
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'function': 'bright_yellow',
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'type': 'bright_magenta',
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'identifier': 'bright_green',
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'error': 'red',
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'result': 'bright_white',
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'error_msg': 'bright_red',
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};
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}
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var history = [];
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var clip_board = "";
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var prec;
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var expBits;
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var log2_10;
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var pstate = "";
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var prompt = "";
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var plen = 0;
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var ps1;
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if (config_numcalc)
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ps1 = "> ";
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else
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ps1 = "qjs > ";
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var ps2 = " ... ";
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var utf8 = true;
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var show_time = false;
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var show_colors = true;
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var eval_time = 0;
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var mexpr = "";
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var level = 0;
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var cmd = "";
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var cursor_pos = 0;
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var last_cmd = "";
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var last_cursor_pos = 0;
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var history_index;
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var this_fun, last_fun;
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var quote_flag = false;
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var utf8_state = 0;
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var utf8_val = 0;
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var term_fd;
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var term_read_buf;
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var term_width;
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/* current X position of the cursor in the terminal */
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var term_cursor_x = 0;
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function termInit() {
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var tab;
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term_fd = std.in.fileno();
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/* get the terminal size */
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term_width = 80;
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if (os.isatty(term_fd)) {
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if (os.ttyGetWinSize) {
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tab = os.ttyGetWinSize(term_fd);
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if (tab)
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term_width = tab[0];
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}
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if (os.ttySetRaw) {
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/* set the TTY to raw mode */
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os.ttySetRaw(term_fd);
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}
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}
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/* install a Ctrl-C signal handler */
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os.signal(os.SIGINT, sigint_handler);
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/* install a handler to read stdin */
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term_read_buf = new Uint8Array(64);
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os.setReadHandler(term_fd, term_read_handler);
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}
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function sigint_handler() {
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/* send Ctrl-C to readline */
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handle_byte(3);
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}
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function term_read_handler() {
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var l, i;
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l = os.read(term_fd, term_read_buf.buffer, 0, term_read_buf.length);
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for(i = 0; i < l; i++)
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handle_byte(term_read_buf[i]);
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}
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function handle_byte(c) {
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if (!utf8) {
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handle_char(c);
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} else if (utf8_state !== 0 && (c >= 0x80 && c < 0xc0)) {
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utf8_val = (utf8_val << 6) | (c & 0x3F);
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utf8_state--;
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if (utf8_state === 0) {
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handle_char(utf8_val);
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}
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} else if (c >= 0xc0 && c < 0xf8) {
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utf8_state = 1 + (c >= 0xe0) + (c >= 0xf0);
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utf8_val = c & ((1 << (6 - utf8_state)) - 1);
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} else {
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utf8_state = 0;
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handle_char(c);
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}
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}
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function is_alpha(c) {
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return typeof c === "string" &&
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((c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z'));
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}
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function is_digit(c) {
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return typeof c === "string" && (c >= '0' && c <= '9');
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}
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function is_word(c) {
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return typeof c === "string" &&
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(is_alpha(c) || is_digit(c) || c == '_' || c == '$');
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}
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function is_balanced(a, b) {
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switch (a + b) {
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case "()":
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case "[]":
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case "{}":
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return true;
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}
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return false;
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}
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function print_color_text(str, start, style_names) {
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var i, j;
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for (j = start; j < str.length;) {
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var style = style_names[i = j];
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while (++j < str.length && style_names[j] == style)
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continue;
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std.puts(colors[styles[style] || 'default']);
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std.puts(str.substring(i, j));
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std.puts(colors['none']);
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}
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}
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function print_csi(n, code) {
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std.puts("\x1b[" + ((n != 1) ? n : "") + code);
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}
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function move_cursor(delta) {
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var i, l;
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if (delta > 0) {
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while (delta != 0) {
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if (term_cursor_x == (term_width - 1)) {
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std.puts("\n"); /* translated to CRLF */
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term_cursor_x = 0;
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delta--;
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} else {
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l = Math.min(term_width - 1 - term_cursor_x, delta);
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print_csi(l, "C"); /* right */
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delta -= l;
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term_cursor_x += l;
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}
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}
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} else {
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delta = -delta;
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while (delta != 0) {
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if (term_cursor_x == 0) {
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print_csi(1, "A"); /* up */
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print_csi(term_width - 1, "C"); /* right */
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delta--;
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term_cursor_x = term_width - 1;
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} else {
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l = Math.min(delta, term_cursor_x);
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print_csi(l, "D"); /* left */
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delta -= l;
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term_cursor_x -= l;
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}
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}
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}
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}
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function update() {
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var i;
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if (cmd != last_cmd) {
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if (!show_colors && last_cmd.substring(0, last_cursor_pos) == cmd.substring(0, last_cursor_pos)) {
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/* optimize common case */
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std.puts(cmd.substring(last_cursor_pos));
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} else {
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/* goto the start of the line */
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move_cursor(-last_cursor_pos);
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if (show_colors) {
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var str = mexpr ? mexpr + '\n' + cmd : cmd;
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var start = str.length - cmd.length;
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var colorstate = colorize_js(str);
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print_color_text(str, start, colorstate[2]);
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} else {
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std.puts(cmd);
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}
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}
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/* Note: assuming no surrogate pairs */
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term_cursor_x = (term_cursor_x + cmd.length) % term_width;
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if (term_cursor_x == 0) {
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/* show the cursor on the next line */
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std.puts(" \x08");
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}
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/* remove the trailing characters */
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std.puts("\x1b[J");
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last_cmd = cmd;
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last_cursor_pos = cmd.length;
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}
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move_cursor(cursor_pos - last_cursor_pos);
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last_cursor_pos = cursor_pos;
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std.out.flush();
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}
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/* editing commands */
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function insert(str) {
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if (str) {
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cmd = cmd.substring(0, cursor_pos) + str + cmd.substring(cursor_pos);
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cursor_pos += str.length;
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}
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}
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function quoted_insert() {
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quote_flag = true;
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}
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function abort() {
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cmd = "";
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cursor_pos = 0;
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return -2;
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}
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function alert() {
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}
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function beginning_of_line() {
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cursor_pos = 0;
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}
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function end_of_line() {
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cursor_pos = cmd.length;
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}
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function forward_char() {
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if (cursor_pos < cmd.length)
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cursor_pos++;
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}
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function backward_char() {
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if (cursor_pos > 0)
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cursor_pos--;
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}
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function skip_word_forward(pos) {
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while (pos < cmd.length && !is_word(cmd.charAt(pos)))
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pos++;
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while (pos < cmd.length && is_word(cmd.charAt(pos)))
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pos++;
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return pos;
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}
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function skip_word_backward(pos) {
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while (pos > 0 && !is_word(cmd.charAt(pos - 1)))
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pos--;
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while (pos > 0 && is_word(cmd.charAt(pos - 1)))
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pos--;
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return pos;
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}
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function forward_word() {
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cursor_pos = skip_word_forward(cursor_pos);
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}
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function backward_word() {
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cursor_pos = skip_word_backward(cursor_pos);
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}
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function accept_line() {
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std.puts("\n");
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history_add(cmd);
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return -1;
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}
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function history_add(str) {
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if (str) {
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history.push(str);
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}
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history_index = history.length;
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}
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function previous_history() {
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if (history_index > 0) {
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if (history_index == history.length) {
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history.push(cmd);
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}
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history_index--;
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cmd = history[history_index];
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cursor_pos = cmd.length;
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}
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}
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function next_history() {
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if (history_index < history.length - 1) {
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history_index++;
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cmd = history[history_index];
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cursor_pos = cmd.length;
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}
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}
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function history_search(dir) {
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var pos = cursor_pos;
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for (var i = 1; i <= history.length; i++) {
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var index = (history.length + i * dir + history_index) % history.length;
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if (history[index].substring(0, pos) == cmd.substring(0, pos)) {
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history_index = index;
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cmd = history[index];
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return;
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}
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}
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}
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function history_search_backward() {
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return history_search(-1);
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}
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function history_search_forward() {
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return history_search(1);
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}
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function delete_char_dir(dir) {
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var start = cursor_pos - (dir < 0);
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var end = start + 1;
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if (start >= 0 && start < cmd.length) {
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if (last_fun === kill_region) {
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kill_region(start, end, dir);
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} else {
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cmd = cmd.substring(0, start) + cmd.substring(end);
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cursor_pos = start;
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}
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}
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}
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function delete_char() {
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delete_char_dir(1);
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}
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function control_d() {
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if (cmd.length == 0) {
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std.puts("\n");
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return -3; /* exit read eval print loop */
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} else {
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delete_char_dir(1);
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}
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}
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function backward_delete_char() {
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delete_char_dir(-1);
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}
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function transpose_chars() {
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var pos = cursor_pos;
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if (cmd.length > 1 && pos > 0) {
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if (pos == cmd.length)
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pos--;
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cmd = cmd.substring(0, pos - 1) + cmd.substring(pos, pos + 1) +
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cmd.substring(pos - 1, pos) + cmd.substring(pos + 1);
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cursor_pos = pos + 1;
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}
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}
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function transpose_words() {
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var p1 = skip_word_backward(cursor_pos);
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var p2 = skip_word_forward(p1);
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var p4 = skip_word_forward(cursor_pos);
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var p3 = skip_word_backward(p4);
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if (p1 < p2 && p2 <= cursor_pos && cursor_pos <= p3 && p3 < p4) {
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cmd = cmd.substring(0, p1) + cmd.substring(p3, p4) +
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cmd.substring(p2, p3) + cmd.substring(p1, p2);
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cursor_pos = p4;
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}
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}
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function upcase_word() {
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var end = skip_word_forward(cursor_pos);
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cmd = cmd.substring(0, cursor_pos) +
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cmd.substring(cursor_pos, end).toUpperCase() +
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cmd.substring(end);
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}
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function downcase_word() {
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var end = skip_word_forward(cursor_pos);
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cmd = cmd.substring(0, cursor_pos) +
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cmd.substring(cursor_pos, end).toLowerCase() +
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cmd.substring(end);
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}
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function kill_region(start, end, dir) {
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var s = cmd.substring(start, end);
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if (last_fun !== kill_region)
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clip_board = s;
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else if (dir < 0)
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clip_board = s + clip_board;
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else
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clip_board = clip_board + s;
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cmd = cmd.substring(0, start) + cmd.substring(end);
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if (cursor_pos > end)
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cursor_pos -= end - start;
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else if (cursor_pos > start)
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cursor_pos = start;
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this_fun = kill_region;
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}
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function kill_line() {
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kill_region(cursor_pos, cmd.length, 1);
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}
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function backward_kill_line() {
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kill_region(0, cursor_pos, -1);
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}
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function kill_word() {
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kill_region(cursor_pos, skip_word_forward(cursor_pos), 1);
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}
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function backward_kill_word() {
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kill_region(skip_word_backward(cursor_pos), cursor_pos, -1);
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}
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function yank() {
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insert(clip_board);
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}
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function control_c() {
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if (last_fun === control_c) {
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std.puts("\n");
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std.exit(0);
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} else {
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std.puts("\n(Press Ctrl-C again to quit)\n");
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readline_print_prompt();
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}
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}
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|
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function reset() {
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cmd = "";
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cursor_pos = 0;
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}
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|
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function get_context_word(line, pos) {
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var s = "";
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while (pos > 0 && is_word(line[pos - 1])) {
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pos--;
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s = line[pos] + s;
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}
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return s;
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}
|
|
function get_context_object(line, pos) {
|
|
var obj, base, c;
|
|
if (pos <= 0 || " ~!%^&*(-+={[|:;,<>?/".indexOf(line[pos - 1]) >= 0)
|
|
return g;
|
|
if (pos >= 2 && line[pos - 1] === ".") {
|
|
pos--;
|
|
obj = {};
|
|
switch (c = line[pos - 1]) {
|
|
case '\'':
|
|
case '\"':
|
|
return "a";
|
|
case ']':
|
|
return [];
|
|
case '}':
|
|
return {};
|
|
case '/':
|
|
return / /;
|
|
default:
|
|
if (is_word(c)) {
|
|
base = get_context_word(line, pos);
|
|
if (["true", "false", "null", "this"].includes(base) || !isNaN(+base))
|
|
return eval(base);
|
|
obj = get_context_object(line, pos - base.length);
|
|
if (obj === null || obj === void 0)
|
|
return obj;
|
|
if (obj === g && obj[base] === void 0)
|
|
return eval(base);
|
|
else
|
|
return obj[base];
|
|
}
|
|
return {};
|
|
}
|
|
}
|
|
return void 0;
|
|
}
|
|
|
|
function get_completions(line, pos) {
|
|
var s, obj, ctx_obj, r, i, j, paren;
|
|
|
|
s = get_context_word(line, pos);
|
|
ctx_obj = get_context_object(line, pos - s.length);
|
|
r = [];
|
|
/* enumerate properties from object and its prototype chain,
|
|
add non-numeric regular properties with s as e prefix
|
|
*/
|
|
for (i = 0, obj = ctx_obj; i < 10 && obj !== null && obj !== void 0; i++) {
|
|
var props = Object.getOwnPropertyNames(obj);
|
|
/* add non-numeric regular properties */
|
|
for (j = 0; j < props.length; j++) {
|
|
var prop = props[j];
|
|
if (typeof prop == "string" && ""+(+prop) != prop && prop.startsWith(s))
|
|
r.push(prop);
|
|
}
|
|
obj = Object.getPrototypeOf(obj);
|
|
}
|
|
if (r.length > 1) {
|
|
/* sort list with internal names last and remove duplicates */
|
|
function symcmp(a, b) {
|
|
if (a[0] != b[0]) {
|
|
if (a[0] == '_')
|
|
return 1;
|
|
if (b[0] == '_')
|
|
return -1;
|
|
}
|
|
if (a < b)
|
|
return -1;
|
|
if (a > b)
|
|
return +1;
|
|
return 0;
|
|
}
|
|
r.sort(symcmp);
|
|
for(i = j = 1; i < r.length; i++) {
|
|
if (r[i] != r[i - 1])
|
|
r[j++] = r[i];
|
|
}
|
|
r.length = j;
|
|
}
|
|
/* 'tab' = list of completions, 'pos' = cursor position inside
|
|
the completions */
|
|
return { tab: r, pos: s.length, ctx: ctx_obj };
|
|
}
|
|
|
|
function completion() {
|
|
var tab, res, s, i, j, len, t, max_width, col, n_cols, row, n_rows;
|
|
res = get_completions(cmd, cursor_pos);
|
|
tab = res.tab;
|
|
if (tab.length === 0)
|
|
return;
|
|
s = tab[0];
|
|
len = s.length;
|
|
/* add the chars which are identical in all the completions */
|
|
for(i = 1; i < tab.length; i++) {
|
|
t = tab[i];
|
|
for(j = 0; j < len; j++) {
|
|
if (t[j] !== s[j]) {
|
|
len = j;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
for(i = res.pos; i < len; i++) {
|
|
insert(s[i]);
|
|
}
|
|
if (last_fun === completion && tab.length == 1) {
|
|
/* append parentheses to function names */
|
|
var m = res.ctx[tab[0]];
|
|
if (typeof m == "function") {
|
|
insert('(');
|
|
if (m.length == 0)
|
|
insert(')');
|
|
} else if (typeof m == "object") {
|
|
insert('.');
|
|
}
|
|
}
|
|
/* show the possible completions */
|
|
if (last_fun === completion && tab.length >= 2) {
|
|
max_width = 0;
|
|
for(i = 0; i < tab.length; i++)
|
|
max_width = Math.max(max_width, tab[i].length);
|
|
max_width += 2;
|
|
n_cols = Math.max(1, Math.floor((term_width + 1) / max_width));
|
|
n_rows = Math.ceil(tab.length / n_cols);
|
|
std.puts("\n");
|
|
/* display the sorted list column-wise */
|
|
for (row = 0; row < n_rows; row++) {
|
|
for (col = 0; col < n_cols; col++) {
|
|
i = col * n_rows + row;
|
|
if (i >= tab.length)
|
|
break;
|
|
s = tab[i];
|
|
if (col != n_cols - 1)
|
|
s = s.padEnd(max_width);
|
|
std.puts(s);
|
|
}
|
|
std.puts("\n");
|
|
}
|
|
/* show a new prompt */
|
|
readline_print_prompt();
|
|
}
|
|
}
|
|
|
|
var commands = { /* command table */
|
|
"\x01": beginning_of_line, /* ^A - bol */
|
|
"\x02": backward_char, /* ^B - backward-char */
|
|
"\x03": control_c, /* ^C - abort */
|
|
"\x04": control_d, /* ^D - delete-char or exit */
|
|
"\x05": end_of_line, /* ^E - eol */
|
|
"\x06": forward_char, /* ^F - forward-char */
|
|
"\x07": abort, /* ^G - bell */
|
|
"\x08": backward_delete_char, /* ^H - backspace */
|
|
"\x09": completion, /* ^I - history-search-backward */
|
|
"\x0a": accept_line, /* ^J - newline */
|
|
"\x0b": kill_line, /* ^K - delete to end of line */
|
|
"\x0d": accept_line, /* ^M - enter */
|
|
"\x0e": next_history, /* ^N - down */
|
|
"\x10": previous_history, /* ^P - up */
|
|
"\x11": quoted_insert, /* ^Q - quoted-insert */
|
|
"\x12": alert, /* ^R - reverse-search */
|
|
"\x13": alert, /* ^S - search */
|
|
"\x14": transpose_chars, /* ^T - transpose */
|
|
"\x18": reset, /* ^X - cancel */
|
|
"\x19": yank, /* ^Y - yank */
|
|
"\x1bOA": previous_history, /* ^[OA - up */
|
|
"\x1bOB": next_history, /* ^[OB - down */
|
|
"\x1bOC": forward_char, /* ^[OC - right */
|
|
"\x1bOD": backward_char, /* ^[OD - left */
|
|
"\x1bOF": forward_word, /* ^[OF - ctrl-right */
|
|
"\x1bOH": backward_word, /* ^[OH - ctrl-left */
|
|
"\x1b[1;5C": forward_word, /* ^[[1;5C - ctrl-right */
|
|
"\x1b[1;5D": backward_word, /* ^[[1;5D - ctrl-left */
|
|
"\x1b[1~": beginning_of_line, /* ^[[1~ - bol */
|
|
"\x1b[3~": delete_char, /* ^[[3~ - delete */
|
|
"\x1b[4~": end_of_line, /* ^[[4~ - eol */
|
|
"\x1b[5~": history_search_backward,/* ^[[5~ - page up */
|
|
"\x1b[6~": history_search_forward, /* ^[[5~ - page down */
|
|
"\x1b[A": previous_history, /* ^[[A - up */
|
|
"\x1b[B": next_history, /* ^[[B - down */
|
|
"\x1b[C": forward_char, /* ^[[C - right */
|
|
"\x1b[D": backward_char, /* ^[[D - left */
|
|
"\x1b[F": end_of_line, /* ^[[F - end */
|
|
"\x1b[H": beginning_of_line, /* ^[[H - home */
|
|
"\x1b\x7f": backward_kill_word, /* M-C-? - backward_kill_word */
|
|
"\x1bb": backward_word, /* M-b - backward_word */
|
|
"\x1bd": kill_word, /* M-d - kill_word */
|
|
"\x1bf": forward_word, /* M-f - backward_word */
|
|
"\x1bk": backward_kill_line, /* M-k - backward_kill_line */
|
|
"\x1bl": downcase_word, /* M-l - downcase_word */
|
|
"\x1bt": transpose_words, /* M-t - transpose_words */
|
|
"\x1bu": upcase_word, /* M-u - upcase_word */
|
|
"\x7f": backward_delete_char, /* ^? - delete */
|
|
};
|
|
|
|
function dupstr(str, count) {
|
|
var res = "";
|
|
while (count-- > 0)
|
|
res += str;
|
|
return res;
|
|
}
|
|
|
|
var readline_keys;
|
|
var readline_state;
|
|
var readline_cb;
|
|
|
|
function readline_print_prompt()
|
|
{
|
|
std.puts(prompt);
|
|
term_cursor_x = prompt.length % term_width;
|
|
last_cmd = "";
|
|
last_cursor_pos = 0;
|
|
}
|
|
|
|
function readline_start(defstr, cb) {
|
|
cmd = defstr || "";
|
|
cursor_pos = cmd.length;
|
|
history_index = history.length;
|
|
readline_cb = cb;
|
|
|
|
prompt = pstate;
|
|
|
|
if (mexpr) {
|
|
prompt += dupstr(" ", plen - prompt.length);
|
|
prompt += ps2;
|
|
} else {
|
|
if (show_time) {
|
|
var t = Math.round(eval_time) + " ";
|
|
eval_time = 0;
|
|
t = dupstr("0", 5 - t.length) + t;
|
|
prompt += t.substring(0, t.length - 4) + "." + t.substring(t.length - 4);
|
|
}
|
|
plen = prompt.length;
|
|
prompt += ps1;
|
|
}
|
|
readline_print_prompt();
|
|
update();
|
|
readline_state = 0;
|
|
}
|
|
|
|
function handle_char(c1) {
|
|
var c;
|
|
c = String.fromCharCode(c1);
|
|
switch(readline_state) {
|
|
case 0:
|
|
if (c == '\x1b') { /* '^[' - ESC */
|
|
readline_keys = c;
|
|
readline_state = 1;
|
|
} else {
|
|
handle_key(c);
|
|
}
|
|
break;
|
|
case 1: /* '^[ */
|
|
readline_keys += c;
|
|
if (c == '[') {
|
|
readline_state = 2;
|
|
} else if (c == 'O') {
|
|
readline_state = 3;
|
|
} else {
|
|
handle_key(readline_keys);
|
|
readline_state = 0;
|
|
}
|
|
break;
|
|
case 2: /* '^[[' - CSI */
|
|
readline_keys += c;
|
|
if (!(c == ';' || (c >= '0' && c <= '9'))) {
|
|
handle_key(readline_keys);
|
|
readline_state = 0;
|
|
}
|
|
break;
|
|
case 3: /* '^[O' - ESC2 */
|
|
readline_keys += c;
|
|
handle_key(readline_keys);
|
|
readline_state = 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
function handle_key(keys) {
|
|
var fun;
|
|
|
|
if (quote_flag) {
|
|
if (keys.length === 1)
|
|
insert(keys);
|
|
quote_flag = false;
|
|
} else if (fun = commands[keys]) {
|
|
this_fun = fun;
|
|
switch (fun(keys)) {
|
|
case -1:
|
|
readline_cb(cmd);
|
|
return;
|
|
case -2:
|
|
readline_cb(null);
|
|
return;
|
|
case -3:
|
|
/* uninstall a Ctrl-C signal handler */
|
|
os.signal(os.SIGINT, null);
|
|
/* uninstall the stdin read handler */
|
|
os.setReadHandler(term_fd, null);
|
|
return;
|
|
}
|
|
last_fun = this_fun;
|
|
} else if (keys.length === 1 && keys >= ' ') {
|
|
insert(keys);
|
|
last_fun = insert;
|
|
} else {
|
|
alert(); /* beep! */
|
|
}
|
|
|
|
cursor_pos = (cursor_pos < 0) ? 0 :
|
|
(cursor_pos > cmd.length) ? cmd.length : cursor_pos;
|
|
update();
|
|
}
|
|
|
|
var hex_mode = false;
|
|
var eval_mode = "std";
|
|
|
|
function bignum_typeof(a) {
|
|
"use bigint";
|
|
return typeof a;
|
|
}
|
|
|
|
function eval_mode_typeof(a) {
|
|
if (eval_mode === "std")
|
|
return typeof a;
|
|
else
|
|
return bignum_typeof(a);
|
|
}
|
|
|
|
function number_to_string(a, radix) {
|
|
var s;
|
|
if (!isFinite(a)) {
|
|
/* NaN, Infinite */
|
|
if (typeof a === "bigfloat" && eval_mode !== "math") {
|
|
return "BigFloat(" + a.toString() + ")";
|
|
} else {
|
|
return a.toString();
|
|
}
|
|
} else {
|
|
if (a == 0) {
|
|
if (1 / a < 0)
|
|
s = "-0";
|
|
else
|
|
s = "0";
|
|
} else {
|
|
if (radix == 16) {
|
|
var s;
|
|
if (a < 0) {
|
|
a = -a;
|
|
s = "-";
|
|
} else {
|
|
s = "";
|
|
}
|
|
s += "0x" + a.toString(16);
|
|
} else {
|
|
s = a.toString();
|
|
}
|
|
}
|
|
if (typeof a === "bigfloat" && eval_mode !== "math") {
|
|
s += "l";
|
|
} else if (eval_mode !== "std" && s.indexOf(".") < 0 &&
|
|
((radix == 16 && s.indexOf("p") < 0) ||
|
|
(radix == 10 && s.indexOf("e") < 0))) {
|
|
/* add a decimal point so that the floating point type
|
|
is visible */
|
|
s += ".0";
|
|
}
|
|
return s;
|
|
}
|
|
}
|
|
|
|
function bigint_to_string(a, radix) {
|
|
var s;
|
|
if (radix == 16) {
|
|
var s;
|
|
if (a < 0) {
|
|
a = -a;
|
|
s = "-";
|
|
} else {
|
|
s = "";
|
|
}
|
|
s += "0x" + a.toString(16);
|
|
} else {
|
|
s = a.toString();
|
|
}
|
|
if (eval_mode === "std")
|
|
s += "n";
|
|
return s;
|
|
}
|
|
|
|
function print(a) {
|
|
var stack = [];
|
|
|
|
function print_rec(a) {
|
|
var n, i, keys, key, type, s;
|
|
|
|
type = eval_mode_typeof(a);
|
|
if (type === "object") {
|
|
if (a === null) {
|
|
std.puts(a);
|
|
} else if (stack.indexOf(a) >= 0) {
|
|
std.puts("[circular]");
|
|
} else if (has_jscalc && (a instanceof Fraction ||
|
|
a instanceof Complex ||
|
|
a instanceof Mod ||
|
|
a instanceof Polynomial ||
|
|
a instanceof PolyMod ||
|
|
a instanceof RationalFunction ||
|
|
a instanceof Series)) {
|
|
std.puts(a.toString());
|
|
} else {
|
|
stack.push(a);
|
|
if (Array.isArray(a)) {
|
|
n = a.length;
|
|
std.puts("[ ");
|
|
for(i = 0; i < n; i++) {
|
|
if (i !== 0)
|
|
std.puts(", ");
|
|
if (i in a) {
|
|
print_rec(a[i]);
|
|
} else {
|
|
std.puts("<empty>");
|
|
}
|
|
if (i > 20) {
|
|
std.puts("...");
|
|
break;
|
|
}
|
|
}
|
|
std.puts(" ]");
|
|
} else if (Object.__getClass(a) === "RegExp") {
|
|
std.puts(a.toString());
|
|
} else {
|
|
keys = Object.keys(a);
|
|
n = keys.length;
|
|
std.puts("{ ");
|
|
for(i = 0; i < n; i++) {
|
|
if (i !== 0)
|
|
std.puts(", ");
|
|
key = keys[i];
|
|
std.puts(key, ": ");
|
|
print_rec(a[key]);
|
|
}
|
|
std.puts(" }");
|
|
}
|
|
stack.pop(a);
|
|
}
|
|
} else if (type === "string") {
|
|
s = a.__quote();
|
|
if (s.length > 79)
|
|
s = s.substring(0, 75) + "...\"";
|
|
std.puts(s);
|
|
} else if (type === "number" || type === "bigfloat") {
|
|
std.puts(number_to_string(a, hex_mode ? 16 : 10));
|
|
} else if (type === "bigint") {
|
|
std.puts(bigint_to_string(a, hex_mode ? 16 : 10));
|
|
} else if (type === "symbol") {
|
|
std.puts(String(a));
|
|
} else if (type === "function") {
|
|
std.puts("function " + a.name + "()");
|
|
} else {
|
|
std.puts(a);
|
|
}
|
|
}
|
|
print_rec(a);
|
|
}
|
|
|
|
function extract_directive(a) {
|
|
var pos;
|
|
if (a[0] !== '\\')
|
|
return "";
|
|
for (pos = 1; pos < a.length; pos++) {
|
|
if (!is_alpha(a[pos]))
|
|
break;
|
|
}
|
|
return a.substring(1, pos);
|
|
}
|
|
|
|
/* return true if the string after cmd can be evaluted as JS */
|
|
function handle_directive(cmd, expr) {
|
|
var param, prec1, expBits1;
|
|
|
|
if (cmd === "h" || cmd === "?" || cmd == "help") {
|
|
help();
|
|
} else if (cmd === "load") {
|
|
var filename = expr.substring(cmd.length + 1).trim();
|
|
if (filename.lastIndexOf(".") <= filename.lastIndexOf("/"))
|
|
filename += ".js";
|
|
std.loadScript(filename);
|
|
return false;
|
|
} else if (cmd === "x") {
|
|
hex_mode = true;
|
|
} else if (cmd === "d") {
|
|
hex_mode = false;
|
|
} else if (cmd === "t") {
|
|
show_time = !show_time;
|
|
} else if (has_bignum && cmd === "p") {
|
|
param = expr.substring(cmd.length + 1).trim().split(" ");
|
|
if (param.length === 1 && param[0] === "") {
|
|
std.puts("BigFloat precision=" + prec + " bits (~" +
|
|
Math.floor(prec / log2_10) +
|
|
" digits), exponent size=" + expBits + " bits\n");
|
|
} else if (param[0] === "f16") {
|
|
prec = 11;
|
|
expBits = 5;
|
|
} else if (param[0] === "f32") {
|
|
prec = 24;
|
|
expBits = 8;
|
|
} else if (param[0] === "f64") {
|
|
prec = 53;
|
|
expBits = 11;
|
|
} else if (param[0] === "f128") {
|
|
prec = 113;
|
|
expBits = 15;
|
|
} else {
|
|
prec1 = parseInt(param[0]);
|
|
if (param.length >= 2)
|
|
expBits1 = parseInt(param[1]);
|
|
else
|
|
expBits1 = BigFloatEnv.expBitsMax;
|
|
if (Number.isNaN(prec1) ||
|
|
prec1 < BigFloatEnv.precMin ||
|
|
prec1 > BigFloatEnv.precMax) {
|
|
std.puts("Invalid precision\n");
|
|
return false;
|
|
}
|
|
if (Number.isNaN(expBits1) ||
|
|
expBits1 < BigFloatEnv.expBitsMin ||
|
|
expBits1 > BigFloatEnv.expBitsMax) {
|
|
std.puts("Invalid exponent bits\n");
|
|
return false;
|
|
}
|
|
prec = prec1;
|
|
expBits = expBits1;
|
|
}
|
|
return false;
|
|
} else if (has_bignum && cmd === "digits") {
|
|
param = expr.substring(cmd.length + 1).trim();
|
|
prec1 = Math.ceil(parseFloat(param) * log2_10);
|
|
if (prec1 < BigFloatEnv.precMin ||
|
|
prec1 > BigFloatEnv.precMax) {
|
|
std.puts("Invalid precision\n");
|
|
return false;
|
|
}
|
|
prec = prec1;
|
|
expBits = BigFloatEnv.expBitsMax;
|
|
return false;
|
|
} else if (has_bignum && cmd === "mode") {
|
|
param = expr.substring(cmd.length + 1).trim();
|
|
if (param === "") {
|
|
std.puts("Running mode=" + eval_mode + "\n");
|
|
} else if (param === "std" || param === "math" ||
|
|
param === "bigint") {
|
|
eval_mode = param;
|
|
} else {
|
|
std.puts("Invalid mode\n");
|
|
}
|
|
return false;
|
|
} else if (cmd === "clear") {
|
|
std.puts("\x1b[H\x1b[J");
|
|
} else if (cmd === "q") {
|
|
std.exit(0);
|
|
} else if (has_jscalc && cmd === "a") {
|
|
algebraicMode = true;
|
|
} else if (has_jscalc && cmd === "n") {
|
|
algebraicMode = false;
|
|
} else {
|
|
std.puts("Unknown directive: " + cmd + "\n");
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
if (config_numcalc) {
|
|
/* called by the GUI */
|
|
g.execCmd = function (cmd) {
|
|
switch(cmd) {
|
|
case "dec":
|
|
hex_mode = false;
|
|
break;
|
|
case "hex":
|
|
hex_mode = true;
|
|
break;
|
|
case "num":
|
|
algebraicMode = false;
|
|
break;
|
|
case "alg":
|
|
algebraicMode = true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
function help() {
|
|
function sel(n) {
|
|
return n ? "*": " ";
|
|
}
|
|
std.puts("\\h this help\n" +
|
|
"\\x " + sel(hex_mode) + "hexadecimal number display\n" +
|
|
"\\d " + sel(!hex_mode) + "decimal number display\n" +
|
|
"\\t " + sel(show_time) + "toggle timing display\n" +
|
|
"\\clear clear the terminal\n");
|
|
if (has_jscalc) {
|
|
std.puts("\\a " + sel(algebraicMode) + "algegraic mode\n" +
|
|
"\\n " + sel(!algebraicMode) + "numeric mode\n");
|
|
}
|
|
if (has_bignum) {
|
|
std.puts("\\p [m [e]] set the BigFloat precision to 'm' bits\n" +
|
|
"\\digits n set the BigFloat precision to 'ceil(n*log2(10))' bits\n");
|
|
if (!has_jscalc) {
|
|
std.puts("\\mode [std|bigint|math] change the running mode (current = " + eval_mode + ")\n");
|
|
}
|
|
}
|
|
if (!config_numcalc) {
|
|
std.puts("\\q exit\n");
|
|
}
|
|
}
|
|
|
|
function eval_and_print(expr) {
|
|
var result;
|
|
|
|
try {
|
|
if (eval_mode === "math")
|
|
expr = '"use math"; void 0;' + expr;
|
|
else if (eval_mode === "bigint")
|
|
expr = '"use bigint"; void 0;' + expr;
|
|
var now = (new Date).getTime();
|
|
/* eval as a script */
|
|
result = std.evalScript(expr);
|
|
eval_time = (new Date).getTime() - now;
|
|
std.puts(colors[styles.result]);
|
|
print(result);
|
|
std.puts("\n");
|
|
std.puts(colors.none);
|
|
/* set the last result */
|
|
g._ = result;
|
|
} catch (error) {
|
|
std.puts(colors[styles.error_msg]);
|
|
if (error instanceof Error) {
|
|
console.log(error);
|
|
if (error.stack) {
|
|
std.puts(error.stack);
|
|
}
|
|
} else {
|
|
std.puts("Throw: ");
|
|
console.log(error);
|
|
}
|
|
std.puts(colors.none);
|
|
}
|
|
}
|
|
|
|
function cmd_start() {
|
|
if (!config_numcalc) {
|
|
if (has_jscalc)
|
|
std.puts('QJSCalc - Type "\\h" for help\n');
|
|
else
|
|
std.puts('QuickJS - Type "\\h" for help\n');
|
|
}
|
|
if (has_bignum) {
|
|
log2_10 = Math.log(10) / Math.log(2);
|
|
if (has_jscalc) {
|
|
prec = 113;
|
|
expBits = 15;
|
|
eval_mode = "math";
|
|
/* XXX: numeric mode should always be the default ? */
|
|
g.algebraicMode = config_numcalc;
|
|
} else {
|
|
prec = 53;
|
|
expBits = 11;
|
|
}
|
|
}
|
|
|
|
cmd_readline_start();
|
|
}
|
|
|
|
function cmd_readline_start() {
|
|
readline_start(dupstr(" ", level), readline_handle_cmd);
|
|
}
|
|
|
|
function readline_handle_cmd(expr) {
|
|
handle_cmd(expr);
|
|
cmd_readline_start();
|
|
}
|
|
|
|
function handle_cmd(expr) {
|
|
var colorstate, cmd;
|
|
|
|
if (expr === null) {
|
|
expr = "";
|
|
return;
|
|
}
|
|
if (expr === "?") {
|
|
help();
|
|
return;
|
|
}
|
|
cmd = extract_directive(expr);
|
|
if (cmd.length > 0) {
|
|
if (!handle_directive(cmd, expr))
|
|
return;
|
|
expr = expr.substring(cmd.length + 1);
|
|
}
|
|
if (expr === "")
|
|
return;
|
|
|
|
if (mexpr)
|
|
expr = mexpr + '\n' + expr;
|
|
colorstate = colorize_js(expr);
|
|
pstate = colorstate[0];
|
|
level = colorstate[1];
|
|
if (pstate) {
|
|
mexpr = expr;
|
|
return;
|
|
}
|
|
mexpr = "";
|
|
|
|
if (has_bignum) {
|
|
BigFloatEnv.setPrec(eval_and_print.bind(null, expr),
|
|
prec, expBits);
|
|
} else {
|
|
eval_and_print(expr);
|
|
}
|
|
level = 0;
|
|
|
|
/* run the garbage collector after each command */
|
|
std.gc();
|
|
}
|
|
|
|
function colorize_js(str) {
|
|
var i, c, start, n = str.length;
|
|
var style, state = "", level = 0;
|
|
var primary, can_regex = 1;
|
|
var r = [];
|
|
|
|
function push_state(c) { state += c; }
|
|
function last_state(c) { return state.substring(state.length - 1); }
|
|
function pop_state(c) {
|
|
var c = last_state();
|
|
state = state.substring(0, state.length - 1);
|
|
return c;
|
|
}
|
|
|
|
function parse_block_comment() {
|
|
style = 'comment';
|
|
push_state('/');
|
|
for (i++; i < n - 1; i++) {
|
|
if (str[i] == '*' && str[i + 1] == '/') {
|
|
i += 2;
|
|
pop_state('/');
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
function parse_line_comment() {
|
|
style = 'comment';
|
|
for (i++; i < n; i++) {
|
|
if (str[i] == '\n') {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
function parse_string(delim) {
|
|
style = 'string';
|
|
push_state(delim);
|
|
while (i < n) {
|
|
c = str[i++];
|
|
if (c == '\n') {
|
|
style = 'error';
|
|
continue;
|
|
}
|
|
if (c == '\\') {
|
|
if (i >= n)
|
|
break;
|
|
i++;
|
|
} else
|
|
if (c == delim) {
|
|
pop_state();
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
function parse_regex() {
|
|
style = 'regex';
|
|
push_state('/');
|
|
while (i < n) {
|
|
c = str[i++];
|
|
if (c == '\n') {
|
|
style = 'error';
|
|
continue;
|
|
}
|
|
if (c == '\\') {
|
|
if (i < n) {
|
|
i++;
|
|
}
|
|
continue;
|
|
}
|
|
if (last_state() == '[') {
|
|
if (c == ']') {
|
|
pop_state()
|
|
}
|
|
// ECMA 5: ignore '/' inside char classes
|
|
continue;
|
|
}
|
|
if (c == '[') {
|
|
push_state('[');
|
|
if (str[i] == '[' || str[i] == ']')
|
|
i++;
|
|
continue;
|
|
}
|
|
if (c == '/') {
|
|
pop_state();
|
|
while (i < n && is_word(str[i]))
|
|
i++;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
function parse_number() {
|
|
style = 'number';
|
|
while (i < n && (is_word(str[i]) || (str[i] == '.' && (i == n - 1 || str[i + 1] != '.')))) {
|
|
i++;
|
|
}
|
|
}
|
|
|
|
var js_keywords = "|" +
|
|
"break|case|catch|continue|debugger|default|delete|do|" +
|
|
"else|finally|for|function|if|in|instanceof|new|" +
|
|
"return|switch|this|throw|try|typeof|while|with|" +
|
|
"class|const|enum|import|export|extends|super|" +
|
|
"implements|interface|let|package|private|protected|" +
|
|
"public|static|yield|" +
|
|
"undefined|null|true|false|Infinity|NaN|" +
|
|
"eval|arguments|" +
|
|
"await|";
|
|
|
|
var js_no_regex = "|this|super|undefined|null|true|false|Infinity|NaN|arguments|";
|
|
var js_types = "|void|var|";
|
|
|
|
function parse_identifier() {
|
|
can_regex = 1;
|
|
|
|
while (i < n && is_word(str[i]))
|
|
i++;
|
|
|
|
var w = '|' + str.substring(start, i) + '|';
|
|
|
|
if (js_keywords.indexOf(w) >= 0) {
|
|
style = 'keyword';
|
|
if (js_no_regex.indexOf(w) >= 0)
|
|
can_regex = 0;
|
|
return;
|
|
}
|
|
|
|
var i1 = i;
|
|
while (i1 < n && str[i1] == ' ')
|
|
i1++;
|
|
|
|
if (i1 < n && str[i1] == '(') {
|
|
style = 'function';
|
|
return;
|
|
}
|
|
|
|
if (js_types.indexOf(w) >= 0) {
|
|
style = 'type';
|
|
return;
|
|
}
|
|
|
|
style = 'identifier';
|
|
can_regex = 0;
|
|
}
|
|
|
|
function set_style(from, to) {
|
|
while (r.length < from)
|
|
r.push('default');
|
|
while (r.length < to)
|
|
r.push(style);
|
|
}
|
|
|
|
for (i = 0; i < n;) {
|
|
style = null;
|
|
start = i;
|
|
switch (c = str[i++]) {
|
|
case ' ':
|
|
case '\t':
|
|
case '\r':
|
|
case '\n':
|
|
continue;
|
|
case '+':
|
|
case '-':
|
|
if (i < n && str[i] == c) {
|
|
i++;
|
|
continue;
|
|
}
|
|
can_regex = 1;
|
|
continue;
|
|
case '/':
|
|
if (i < n && str[i] == '*') { // block comment
|
|
parse_block_comment();
|
|
break;
|
|
}
|
|
if (i < n && str[i] == '/') { // line comment
|
|
parse_line_comment();
|
|
break;
|
|
}
|
|
if (can_regex) {
|
|
parse_regex();
|
|
can_regex = 0;
|
|
break;
|
|
}
|
|
can_regex = 1;
|
|
continue;
|
|
case '\'':
|
|
case '\"':
|
|
case '`':
|
|
parse_string(c);
|
|
can_regex = 0;
|
|
break;
|
|
case '(':
|
|
case '[':
|
|
case '{':
|
|
can_regex = 1;
|
|
level++;
|
|
push_state(c);
|
|
continue;
|
|
case ')':
|
|
case ']':
|
|
case '}':
|
|
can_regex = 0;
|
|
if (level > 0 && is_balanced(last_state(), c)) {
|
|
level--;
|
|
pop_state();
|
|
continue;
|
|
}
|
|
style = 'error';
|
|
break;
|
|
default:
|
|
if (is_digit(c)) {
|
|
parse_number();
|
|
can_regex = 0;
|
|
break;
|
|
}
|
|
if (is_word(c) || c == '$') {
|
|
parse_identifier();
|
|
break;
|
|
}
|
|
can_regex = 1;
|
|
continue;
|
|
}
|
|
if (style)
|
|
set_style(start, i);
|
|
}
|
|
set_style(n, n);
|
|
return [ state, level, r ];
|
|
}
|
|
|
|
termInit();
|
|
|
|
cmd_start();
|
|
|
|
})(globalThis);
|