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var YosysJS = new function() {
this.script_element = document.currentScript;
this.viz_element = undefined;
this.url_prefix = this.script_element.src.replace(/[^/]+$/, '')
this.load_viz = function() {
if (this.viz_element)
return;
this.viz_element = document.createElement('iframe')
this.viz_element.style.display = 'none'
document.body.appendChild(this.viz_element);
this.viz_element.contentWindow.document.open()
this.viz_element.contentWindow.document.write('<script type="text/javascript" src="' + this.url_prefix + 'viz.js"></' + 'script>');
this.viz_element.contentWindow.document.close()
}
this.dot_to_svg = function(dot_text) {
return this.viz_element.contentWindow.Viz(dot_text, "svg");
}
this.dot_into_svg = function(dot_text, svg_element) {
if (typeof(svg_element) == 'string')
svg_element = document.getElementById(svg_element);
svg_element.innerHTML = this.dot_to_svg(dot_text);
c = svg_element.firstChild;
while (c) {
if (c.tagName == 'svg') {
while (c.firstChild)
svg_element.appendChild(c.firstChild);
svg_element.setAttribute('viewBox', c.getAttribute('viewBox'));
// svg_element.removeChild(c);
break;
}
c = c.nextSibling;
}
}
this.create = function(reference_element, on_ready) {
var ys = new Object();
ys.init_script = "";
ys.ready = false;
ys.verbose = false;
ys.echo = false;
if (typeof(reference_element) == 'string')
reference_element = document.getElementById(reference_element);
if (reference_element) {
if (reference_element.tagName == 'textarea')
ys.init_script = reference_element.value;
if (reference_element.tagName == 'iframe') {
ys.iframe_element = reference_element;
} else {
ys.iframe_element = document.createElement('iframe');
ys.iframe_element.id = reference_element.id;
for (i in reference_element.style)
ys.iframe_element.style[i] = reference_element.style[i];
reference_element.parentNode.insertBefore(ys.iframe_element, reference_element);
reference_element.parentNode.removeChild(reference_element);
}
} else {
ys.iframe_element = document.createElement('iframe');
ys.iframe_element.style.display = 'none';
document.body.appendChild(ys.iframe_element);
}
ys.print_buffer = "";
ys.last_line_empty = false;
ys.got_normal_log_message = false;
ys.window = ys.iframe_element.contentWindow;
var doc = ys.window.document;
var mod = ys.window.Module = {
print: function(text) {
if (typeof(text) == 'number')
return;
ys.print_buffer += text + "\n";
ys.got_normal_log_message = true;
if (ys.verbose) {
ys.last_line_empty = text == "";
span = doc.createElement('span');
span.textContent = text + "\n";
span.style.fontFamily = 'monospace';
span.style.whiteSpace = 'pre';
doc.body.appendChild(span);
ys.window.scrollTo(0, doc.body.scrollHeight)
}
ys.ready = true;
},
printErr: function(text) {
if (typeof(text) == 'number')
return;
if (ys.got_normal_log_message) {
ys.print_buffer += text + "\n";
ys.last_line_empty = text == "";
span = doc.createElement('span');
span.textContent = text + "\n";
span.style.fontFamily = 'monospace';
span.style.whiteSpace = 'pre';
span.style.color = 'red';
doc.body.appendChild(span);
ys.window.scrollTo(0, doc.body.scrollHeight)
} else {
console.log(text);
}
},
};
ys.write = function(text) {
ys.print_buffer += text + "\n";
ys.last_line_empty = text == "";
span = doc.createElement('span');
span.textContent = text + "\n";
span.style.fontFamily = 'monospace';
span.style.whiteSpace = 'pre';
doc.body.appendChild(span);
ys.window.scrollTo(0, doc.body.scrollHeight)
}
ys.prompt = function() {
return mod.ccall('prompt', 'string', [], [])
}
ys.run = function(cmd) {
ys.print_buffer = "";
if (ys.echo) {
if (!ys.last_line_empty)
ys.write("");
ys.write(ys.prompt() + cmd);
}
mod.ccall('run', '', ['string'], [cmd]);
return ys.print_buffer;
}
ys.read_file = function(filename) {
return ys.window.FS.readFile(filename, {encoding: 'utf8'});
}
ys.write_file = function(filename, text) {
return ys.window.FS.writeFile(filename, text, {encoding: 'utf8'});
}
ys.read_dir = function(dirname) {
return ys.window.FS.readdir(dirname);
}
el = doc.createElement('script');
el.type = 'text/javascript';
el.src = this.url_prefix + 'yosys.js';
doc.head.appendChild(el);
if (on_ready || ys.init_script) {
function check_ready() {
if (ys.ready) {
if (ys.init_script) {
ys.write_file("/script.ys", ys.init_script);
ys.run("script /script.ys");
}
if (on_ready)
on_ready(ys);
} else
window.setTimeout(check_ready, 100);
}
window.setTimeout(check_ready, 100);
}
return ys;
}
}
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