mirror of
https://github.com/luau-lang/luau.git
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501 lines
17 KiB
Python
501 lines
17 KiB
Python
# This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details
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class Node:
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def __init__(self):
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self.name = ""
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self.children = {}
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# computed
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self.depth = 0
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self.width = 0
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self.offset = 0
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def child(self, name):
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node = self.children.get(name)
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if not node:
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node = self.__class__()
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node.name = name
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self.children[name] = node
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return node
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def subtree(self):
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result = [self]
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offset = 0
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while offset < len(result):
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p = result[offset]
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offset += 1
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for c in p.children.values():
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result.append(c)
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return result
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def escape(s):
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return s.replace("&", "&").replace("<", "<").replace(">", ">")
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def layout(root, widthcb):
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for n in reversed(root.subtree()):
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# propagate width to the parent
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n.width = widthcb(n)
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for c in n.children.values():
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n.width += c.width
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# compute offset from parent for every child in width order (layout order)
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offset = 0
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for c in sorted(n.children.values(), key = lambda x: x.width, reverse = True):
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c.offset = offset
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offset += c.width
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for n in root.subtree():
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for c in n.children.values():
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c.depth = n.depth + 1
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c.offset += n.offset
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# svg template (stolen from framegraph.pl)
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template = r"""<?xml version="1.0" standalone="no"?>
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<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
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<svg version="1.1" width="1200" height="$height" onload="init(evt)" viewBox="0 0 1200 $height" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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<!-- Flame graph stack visualization. See https://github.com/brendangregg/FlameGraph for latest version, and http://www.brendangregg.com/flamegraphs.html for examples. -->
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<defs>
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<linearGradient id="background" y1="0" y2="1" x1="0" x2="0" >
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<stop stop-color="$gradient-start" offset="5%" />
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<stop stop-color="$gradient-end" offset="95%" />
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</linearGradient>
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</defs>
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<style type="text/css">
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text { font-family:Verdana; font-size:12px; fill:rgb(0,0,0); }
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#search, #ignorecase { opacity:0.1; cursor:pointer; }
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#search:hover, #search.show, #ignorecase:hover, #ignorecase.show { opacity:1; }
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#subtitle { text-anchor:middle; font-color:rgb(160,160,160); }
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#title { text-anchor:middle; font-size:17px}
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#unzoom { cursor:pointer; }
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#frames > *:hover { stroke:black; stroke-width:0.5; cursor:pointer; }
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.hide { display:none; }
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.parent { opacity:0.5; }
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</style>
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<script type="text/ecmascript">
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<![CDATA[
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"use strict";
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var details, searchbtn, unzoombtn, matchedtxt, svg, searching, currentSearchTerm, ignorecase, ignorecaseBtn;
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function init(evt) {
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details = document.getElementById("details").firstChild;
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searchbtn = document.getElementById("search");
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ignorecaseBtn = document.getElementById("ignorecase");
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unzoombtn = document.getElementById("unzoom");
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matchedtxt = document.getElementById("matched");
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svg = document.getElementsByTagName("svg")[0];
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searching = 0;
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currentSearchTerm = null;
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}
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window.addEventListener("click", function(e) {
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var target = find_group(e.target);
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if (target) {
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if (target.nodeName == "a") {
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if (e.ctrlKey === false) return;
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e.preventDefault();
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}
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if (target.classList.contains("parent")) unzoom();
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zoom(target);
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}
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else if (e.target.id == "unzoom") unzoom();
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else if (e.target.id == "search") search_prompt();
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else if (e.target.id == "ignorecase") toggle_ignorecase();
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}, false)
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// mouse-over for info
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// show
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window.addEventListener("mouseover", function(e) {
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var target = find_group(e.target);
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if (target) details.nodeValue = g_to_text(target);
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}, false)
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// clear
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window.addEventListener("mouseout", function(e) {
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var target = find_group(e.target);
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if (target) details.nodeValue = ' ';
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}, false)
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// ctrl-F for search
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window.addEventListener("keydown",function (e) {
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if (e.keyCode === 114 || (e.ctrlKey && e.keyCode === 70)) {
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e.preventDefault();
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search_prompt();
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}
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}, false)
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// ctrl-I to toggle case-sensitive search
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window.addEventListener("keydown",function (e) {
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if (e.ctrlKey && e.keyCode === 73) {
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e.preventDefault();
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toggle_ignorecase();
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}
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}, false)
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// functions
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function find_child(node, selector) {
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var children = node.querySelectorAll(selector);
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if (children.length) return children[0];
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return;
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}
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function find_group(node) {
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var parent = node.parentElement;
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if (!parent) return;
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if (parent.id == "frames") return node;
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return find_group(parent);
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}
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function orig_save(e, attr, val) {
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if (e.attributes["_orig_" + attr] != undefined) return;
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if (e.attributes[attr] == undefined) return;
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if (val == undefined) val = e.attributes[attr].value;
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e.setAttribute("_orig_" + attr, val);
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}
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function orig_load(e, attr) {
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if (e.attributes["_orig_"+attr] == undefined) return;
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e.attributes[attr].value = e.attributes["_orig_" + attr].value;
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e.removeAttribute("_orig_"+attr);
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}
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function g_to_text(e) {
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var text = find_child(e, "details").firstChild.nodeValue;
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return (text)
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}
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function g_to_func(e) {
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var child = find_child(e, "rawtext");
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return child ? child.textContent : null;
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}
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function update_text(e) {
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var r = find_child(e, "rect");
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var t = find_child(e, "text");
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var w = parseFloat(r.attributes.width.value) -3;
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var txt = find_child(e, "rawtext").textContent.replace(/\([^(]*\)$/,"");
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t.attributes.x.value = parseFloat(r.attributes.x.value) + 3;
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// Smaller than this size won't fit anything
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if (w < 2 * 12 * 0.59) {
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t.textContent = "";
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return;
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}
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t.textContent = txt;
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// Fit in full text width
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if (/^ *$/.test(txt) || t.getSubStringLength(0, txt.length) < w)
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return;
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for (var x = txt.length - 2; x > 0; x--) {
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if (t.getSubStringLength(0, x + 2) <= w) {
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t.textContent = txt.substring(0, x) + "..";
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return;
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}
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}
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t.textContent = "";
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}
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// zoom
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function zoom_reset(e) {
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if (e.attributes != undefined) {
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orig_load(e, "x");
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orig_load(e, "width");
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}
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if (e.childNodes == undefined) return;
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for (var i = 0, c = e.childNodes; i < c.length; i++) {
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zoom_reset(c[i]);
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}
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}
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function zoom_child(e, x, ratio) {
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if (e.attributes != undefined) {
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if (e.attributes.x != undefined) {
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orig_save(e, "x");
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e.attributes.x.value = (parseFloat(e.attributes.x.value) - x - 10) * ratio + 10;
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if (e.tagName == "text")
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e.attributes.x.value = find_child(e.parentNode, "rect[x]").attributes.x.value + 3;
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}
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if (e.attributes.width != undefined) {
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orig_save(e, "width");
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e.attributes.width.value = parseFloat(e.attributes.width.value) * ratio;
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}
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}
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if (e.childNodes == undefined) return;
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for (var i = 0, c = e.childNodes; i < c.length; i++) {
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zoom_child(c[i], x - 10, ratio);
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}
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}
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function zoom_parent(e) {
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if (e.attributes) {
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if (e.attributes.x != undefined) {
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orig_save(e, "x");
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e.attributes.x.value = 10;
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}
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if (e.attributes.width != undefined) {
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orig_save(e, "width");
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e.attributes.width.value = parseInt(svg.width.baseVal.value) - (10 * 2);
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}
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}
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if (e.childNodes == undefined) return;
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for (var i = 0, c = e.childNodes; i < c.length; i++) {
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zoom_parent(c[i]);
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}
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}
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function zoom(node) {
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var attr = find_child(node, "rect").attributes;
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var width = parseFloat(attr.width.value);
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var xmin = parseFloat(attr.x.value);
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var xmax = parseFloat(xmin + width);
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var ymin = parseFloat(attr.y.value);
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var ratio = (svg.width.baseVal.value - 2 * 10) / width;
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// XXX: Workaround for JavaScript float issues (fix me)
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var fudge = 0.0001;
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unzoombtn.classList.remove("hide");
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var el = document.getElementById("frames").children;
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for (var i = 0; i < el.length; i++) {
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var e = el[i];
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var a = find_child(e, "rect").attributes;
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var ex = parseFloat(a.x.value);
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var ew = parseFloat(a.width.value);
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var upstack;
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// Is it an ancestor
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if ($flip == 1) {
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upstack = parseFloat(a.y.value) > ymin;
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} else {
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upstack = parseFloat(a.y.value) < ymin;
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}
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if (upstack) {
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// Direct ancestor
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if (ex <= xmin && (ex+ew+fudge) >= xmax) {
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e.classList.add("parent");
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zoom_parent(e);
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update_text(e);
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}
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// not in current path
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else
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e.classList.add("hide");
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}
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// Children maybe
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else {
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// no common path
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if (ex < xmin || ex + fudge >= xmax) {
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e.classList.add("hide");
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}
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else {
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zoom_child(e, xmin, ratio);
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update_text(e);
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}
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}
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}
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search();
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}
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function unzoom() {
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unzoombtn.classList.add("hide");
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var el = document.getElementById("frames").children;
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for(var i = 0; i < el.length; i++) {
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el[i].classList.remove("parent");
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el[i].classList.remove("hide");
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zoom_reset(el[i]);
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update_text(el[i]);
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}
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search();
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}
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// search
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function toggle_ignorecase() {
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ignorecase = !ignorecase;
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if (ignorecase) {
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ignorecaseBtn.classList.add("show");
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} else {
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ignorecaseBtn.classList.remove("show");
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}
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reset_search();
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search();
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}
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function reset_search() {
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var el = document.querySelectorAll("#frames rect");
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for (var i = 0; i < el.length; i++) {
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orig_load(el[i], "fill")
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}
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}
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function search_prompt() {
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if (!searching) {
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var term = prompt("Enter a search term (regexp " +
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"allowed, eg: ^ext4_)"
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+ (ignorecase ? ", ignoring case" : "")
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+ "\nPress Ctrl-i to toggle case sensitivity", "");
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if (term != null) {
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currentSearchTerm = term;
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search();
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}
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} else {
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reset_search();
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searching = 0;
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currentSearchTerm = null;
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searchbtn.classList.remove("show");
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searchbtn.firstChild.nodeValue = "Search"
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matchedtxt.classList.add("hide");
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matchedtxt.firstChild.nodeValue = ""
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}
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}
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function search(term) {
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if (currentSearchTerm === null) return;
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var term = currentSearchTerm;
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var re = new RegExp(term, ignorecase ? 'i' : '');
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var el = document.getElementById("frames").children;
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var matches = new Object();
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var maxwidth = 0;
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for (var i = 0; i < el.length; i++) {
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var e = el[i];
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var func = g_to_func(e);
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var rect = find_child(e, "rect");
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if (func == null || rect == null)
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continue;
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// Save max width. Only works as we have a root frame
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var w = parseFloat(rect.attributes.width.value);
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if (w > maxwidth)
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maxwidth = w;
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if (func.match(re)) {
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// highlight
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var x = parseFloat(rect.attributes.x.value);
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orig_save(rect, "fill");
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rect.attributes.fill.value = "rgb(230,0,230)";
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// remember matches
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if (matches[x] == undefined) {
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matches[x] = w;
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} else {
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if (w > matches[x]) {
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// overwrite with parent
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matches[x] = w;
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}
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}
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searching = 1;
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}
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}
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if (!searching)
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return;
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searchbtn.classList.add("show");
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searchbtn.firstChild.nodeValue = "Reset Search";
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// calculate percent matched, excluding vertical overlap
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var count = 0;
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var lastx = -1;
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var lastw = 0;
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var keys = Array();
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for (k in matches) {
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if (matches.hasOwnProperty(k))
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keys.push(k);
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}
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// sort the matched frames by their x location
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// ascending, then width descending
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keys.sort(function(a, b){
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return a - b;
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});
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// Step through frames saving only the biggest bottom-up frames
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// thanks to the sort order. This relies on the tree property
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// where children are always smaller than their parents.
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var fudge = 0.0001; // JavaScript floating point
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for (var k in keys) {
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var x = parseFloat(keys[k]);
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var w = matches[keys[k]];
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if (x >= lastx + lastw - fudge) {
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count += w;
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lastx = x;
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lastw = w;
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}
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}
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// display matched percent
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matchedtxt.classList.remove("hide");
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var pct = 100 * count / maxwidth;
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if (pct != 100) pct = pct.toFixed(1)
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matchedtxt.firstChild.nodeValue = "Matched: " + pct + "%";
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}
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]]>
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</script>
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<rect x="0.0" y="0" width="1200.0" height="$height.0" fill="url(#background)" />
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<text id="title" x="600.00" y="24" >$title</text>
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<text id="unzoom" x="10.00" y="24" class="hide">Reset Zoom</text>
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<text id="search" x="1090.00" y="24" >Search</text>
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<text id="ignorecase" x="1174.00" y="24" >ic</text>
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<text id="matched" x="1090.00" y="$status" > </text>
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<text id="details" x="10.00" y="$status" > </text>
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<g id="frames">
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"""
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def namehash(s):
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# FNV-1a
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hval = 0x811c9dc5
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for ch in s:
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hval = hval ^ ord(ch)
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hval = hval * 0x01000193
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hval = hval % (2 ** 32)
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return (hval % 31337) / 31337.0
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def display(root, title, colors, flip = False):
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if colors == "cold":
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gradient_start = "#eef2ee"
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gradient_end = "#e0ffe0"
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else:
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gradient_start = "#eeeeee"
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gradient_end = "#eeeeb0"
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maxdepth = 0
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for n in root.subtree():
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maxdepth = max(maxdepth, n.depth)
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svgheight = maxdepth * 16 + 3 * 16 + 2 * 16
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print(template
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.replace("$title", title)
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.replace("$gradient-start", gradient_start)
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.replace("$gradient-end", gradient_end)
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.replace("$height", str(svgheight))
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.replace("$status", str((svgheight - 16 + 3 if flip else 3 * 16 - 3)))
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.replace("$flip", str(int(flip)))
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)
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framewidth = 1200 - 20
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def pixels(x):
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return float(x) / root.width * framewidth if root.width > 0 else 0
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for n in root.subtree():
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if pixels(n.width) < 0.1:
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continue
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x = 10 + pixels(n.offset)
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y = (maxdepth - 1 - n.depth if flip else n.depth) * 16 + 3 * 16
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width = pixels(n.width)
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height = 15
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if colors == "cold":
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fillr = 0
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fillg = int(190 + 50 * namehash(n.name))
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fillb = int(210 * namehash(n.name[::-1]))
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else:
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fillr = int(205 + 50 * namehash(n.name))
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fillg = int(230 * namehash(n.name[::-1]))
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fillb = int(55 * namehash(n.name[::-2]))
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fill = "rgb({},{},{})".format(fillr, fillg, fillb)
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chars = width / (12 * 0.59)
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text = n.text()
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if chars >= 3:
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if chars < len(text):
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text = text[:int(chars-2)] + ".."
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else:
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text = ""
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print("<g>")
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print("<title>{}</title>".format(escape(n.title())))
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print("<details>{}</details>".format(escape(n.details(root))))
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print("<rect x='{}' y='{}' width='{}' height='{}' fill='{}' rx='2' ry='2' />".format(x, y, width, height, fill))
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print("<text x='{}' y='{}'>{}</text>".format(x + 3, y + 10.5, escape(text)))
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print("<rawtext>{}</rawtext>".format(escape(n.text())))
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print("</g>")
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print("</g>\n</svg>\n")
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