mirror of https://github.com/YosysHQ/yosys.git
238 lines
7.7 KiB
HTML
238 lines
7.7 KiB
HTML
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<html><head>
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<title>YosysJS Example Application #01</title>
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</head><body onload="document.getElementById('command').focus()">
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<h1>YosysJS Example Application #01</h1>
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<table width="100%"><tr><td><div id="tabs"></div></td><td align="right"><tt>[ <span onclick="load_example()">load example</span> ]</tt></td></tr></table>
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<iframe id="viz" style="display: none"><script type="text/javascript" src="viz.js"></script></iframe>
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<svg id="svg" style="display: none; position: absolute; padding: 10px; width: 100%; height: 80%;"></svg>
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<div><textarea id="output" style="width: 100%" rows="30" cols="100"></textarea></div>
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<div id="wait" style="display: block"><br/><b><span id="waitmsg">Loading...</span></b></div>
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<div id="input" style="display: none"><form onsubmit="window.setTimeout(run_command); return false"><tt><span id="prompt">
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</span></tt><input id="command" type="text" onkeydown="history(event)" style="font-family: monospace; font-weight: bold;" size="100"></form></div>
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<script type='text/javascript'>
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var got_log_messages = false;
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var history_log = [];
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var history_index = 0;
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var history_bak = "";
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function history(ev) {
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if (ev.keyCode == 38) {
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el = document.getElementById('command');
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if (history_index == history_log.length)
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history_bak = el.value
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if (history_index > 0)
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el.value = history_log[--history_index];
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}
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if (ev.keyCode == 40) {
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if (history_index < history_log.length) {
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el = document.getElementById('command');
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if (++history_index < history_log.length)
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el.value = history_log[history_index];
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else
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el.value = history_bak;
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}
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}
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}
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var Module = {
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print: (function() {
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var element = document.getElementById('output');
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if (element) element.value = ''; // clear browser cache
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return function(text) {
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if (!got_log_messages) {
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window.setTimeout(startup, 50);
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got_log_messages = true;
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}
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if (element && typeof(text) != "number") {
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element.value += text + "\n";
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element.scrollTop = element.scrollHeight; // focus on bottom
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}
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};
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})(),
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printErr: (function() {
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var element = document.getElementById('output');
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if (element) element.value = ''; // clear browser cache
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return function(text) {
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if (element && typeof(text) != "number") {
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console.log(text);
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if (got_log_messages) {
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element.value += text + "\n";
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element.scrollTop = element.scrollHeight; // focus on bottom
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}
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}
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};
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})(),
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};
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var current_file = "";
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var console_messages = "";
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var svg_cache = { };
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function update_tabs() {
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var f, html = "", flist = FS.readdir('.');
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if (current_file == "") {
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html += '<tt>[ <b>Console</b>';
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} else {
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html += '<tt>[ <span onclick="open_file(\'\')">Console</span>';
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}
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for (i in flist) {
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f = flist[i]
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if (f == "." || f == "..")
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continue;
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if (current_file == f) {
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html += ' | <b>' + f + '</b>';
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} else {
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html += ' | <span onclick="open_file(\'' + f + '\')">' + f + '</span>';
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}
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}
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html += ' | <span onclick="open_file(prompt(\'Filename:\'))">new file</span> ]</tt>';
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document.getElementById('tabs').innerHTML = html;
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if (current_file == "" || /\.dot$/.test(current_file)) {
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var element = document.getElementById('output');
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element.readOnly = true;
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element.scrollTop = element.scrollHeight; // focus on bottom
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document.getElementById('command').focus();
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} else {
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document.getElementById('output').readOnly = false;
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document.getElementById('output').focus();
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}
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}
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function open_file(filename)
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{
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if (current_file == "")
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console_messages = document.getElementById('output').value;
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else if (!/\.dot$/.test(current_file))
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FS.writeFile(current_file, document.getElementById('output').value, {encoding: 'utf8'});
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if (filename == "") {
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document.getElementById('output').value = console_messages;
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} else {
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try {
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document.getElementById('output').value = FS.readFile(filename, {encoding: 'utf8'});
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} catch (e) {
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document.getElementById('output').value = "";
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FS.writeFile(filename, document.getElementById('output').value, {encoding: 'utf8'});
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}
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}
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if (/\.dot$/.test(filename)) {
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dot = document.getElementById('output').value;
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if (!(dot in svg_cache)) {
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el = document.getElementById('viz');
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svg_cache[dot] = el.contentWindow.Viz(dot, "svg");
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}
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document.getElementById('svg').innerHTML = svg_cache[dot];
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document.getElementById('svg').style.display = 'block';
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document.getElementById('output').value = '';
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} else {
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document.getElementById('svg').innerHTML = '';
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document.getElementById('svg').style.display = 'none';
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}
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current_file = filename;
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update_tabs()
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}
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function startup() {
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el = document.getElementById('viz');
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el.contentWindow.document.open();
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el.contentWindow.document.write('<script type="text/javascript" src="viz.js"></' + 'script>');
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el.contentWindow.document.close();
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document.getElementById('wait').style.display = 'none';
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document.getElementById('input').style.display = 'block';
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document.getElementById('waitmsg').textContent = 'Waiting for yosys.js...';
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document.getElementById('prompt').textContent = yosys_prompt();
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try { FS.mkdir('/work'); } catch (e) { }
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FS.chdir('/work');
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update_tabs();
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console.log('yosys.js loaded.');
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}
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function load_example() {
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open_file('')
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var txt = "";
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txt += "// a simple yosys.js example. run \"script example.ys\".\n";
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txt += "\n";
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txt += "module example(input clk, input rst, input inc, output reg [3:0] cnt);\n";
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txt += " always @(posedge clk) begin\n";
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txt += " if (rst)\n";
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txt += " cnt <= 0;\n";
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txt += " else if (inc)\n";
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txt += " cnt <= cnt + 1;\n";
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txt += " end\n";
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txt += "endmodule\n";
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txt += "\n";
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FS.writeFile('example.v', txt, {encoding: 'utf8'});
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var txt = "";
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txt += "# a simple yosys.js example. run \"script example.ys\".\n";
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txt += "\n";
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txt += "design -reset\n";
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txt += "read_verilog example.v\n";
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txt += "proc\n";
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txt += "opt\n";
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txt += "show\n";
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txt += "\n";
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FS.writeFile('example.ys', txt, {encoding: 'utf8'});
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open_file('example.ys')
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document.getElementById('command').focus();
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}
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function yosys_command(cmd) {
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Module.ccall('run', '', ['string'], [cmd])
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}
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function yosys_prompt() {
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return Module.ccall('prompt', 'string', [], [])
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}
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function run_command() {
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var cmd = document.getElementById('command').value;
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document.getElementById('command').value = '';
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if (history_log.length == 0 || history_log[history_log.length-1] != cmd)
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history_log.push(cmd);
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history_index = history_log.length;
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var show_dot_before = "";
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try { show_dot_before = FS.readFile('show.dot', { encoding: 'utf8' }); } catch (e) { }
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open_file('');
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Module.print(yosys_prompt() + cmd);
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document.getElementById('wait').style.display = 'block';
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document.getElementById('input').style.display = 'none';
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function run_command_bh() {
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try {
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yosys_command(cmd);
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} catch (e) {
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Module.print('Caught JavaScript exception. (see JavaScript console for details.)');
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console.log(e);
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}
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document.getElementById('wait').style.display = 'none';
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document.getElementById('input').style.display = 'block';
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document.getElementById('prompt').textContent = yosys_prompt();
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var show_dot_after = "";
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try { show_dot_after = FS.readFile('show.dot', { encoding: 'utf8' }); } catch (e) { }
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if (show_dot_before != show_dot_after)
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open_file('show.dot');
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update_tabs();
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}
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window.setTimeout(run_command_bh, 50);
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return false;
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}
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</script>
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<script async type="text/javascript" src="yosys.js"></script>
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</body></html>
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