From 33e80b96c7aac6b93e6bee18572abf529f8cc1fa Mon Sep 17 00:00:00 2001
From: Clifford Wolf <clifford@clifford.at>
Date: Mon, 16 Feb 2015 12:41:48 +0100
Subject: Added YosysJS wrapper

---
 misc/yosysjs/yosysjs.js | 159 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 159 insertions(+)
 create mode 100644 misc/yosysjs/yosysjs.js

(limited to 'misc/yosysjs/yosysjs.js')

diff --git a/misc/yosysjs/yosysjs.js b/misc/yosysjs/yosysjs.js
new file mode 100644
index 000000000..ad6df348b
--- /dev/null
+++ b/misc/yosysjs/yosysjs.js
@@ -0,0 +1,159 @@
+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) {
+		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');
+			document.body.appendChild(ys.iframe_element);
+		}
+
+		var return_buffer = "";
+		var last_line_empty = false;
+
+		var win = ys.iframe_element.contentWindow;
+		var doc = ys.iframe_element.contentWindow.document;
+		var mod = ys.iframe_element.contentWindow.Module = {
+			print: function(text) {
+				return_buffer += text + "\n";
+				if (ys.verbose) {
+					last_line_empty = text == "";
+					span = doc.createElement('span');
+					span.textContent = text + "\n";
+					span.style.fontFamily = 'monospace';
+					span.style.whiteSpace = 'pre';
+					doc.body.appendChild(span);
+					win.scrollTo(0, doc.body.scrollHeight)
+				}
+				ys.ready = true;
+			},
+			printErr: function(text) {
+				return_buffer += text + "\n";
+				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);
+				win.scrollTo(0, doc.body.scrollHeight)
+			},
+		};
+
+		ys.write = function(text) {
+			last_line_empty = text == "";
+			span = doc.createElement('span');
+			span.textContent = text + "\n";
+			span.style.fontFamily = 'monospace';
+			span.style.whiteSpace = 'pre';
+			doc.body.appendChild(span);
+			win.scrollTo(0, doc.body.scrollHeight)
+		}
+
+		ys.prompt = function() {
+			return mod.ccall('prompt', 'string', [], [])
+		}
+
+		ys.run = function(cmd) {
+			return_buffer = "";
+			if (ys.echo) {
+				if (!last_line_empty)
+					ys.write("");
+				ys.write(ys.prompt() + cmd);
+			}
+			mod.ccall('run', '', ['string'], [cmd]);
+			return return_buffer;
+		}
+
+		ys.read_file = function(filename) {
+			return win.FS.readFile(filename, {encoding: 'utf8'});
+		}
+
+		ys.write_file = function(filename, text) {
+			return win.FS.writeFile(filename, text, {encoding: 'utf8'});
+		}
+
+		ys.read_dir = function(dirname) {
+			return win.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;
+	}
+}
-- 
cgit v1.2.3