mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
synced 2024-11-21 14:44:00 +00:00
1125 lines
28 KiB
Go
1125 lines
28 KiB
Go
|
// Copyright 2015 The Go Authors. All rights reserved.
|
||
|
|
// Copyright 2019 Dominik Honnef. All rights reserved.
|
||
|
|
|
||
|
|
package ir
|
||
|
|
|
||
|
|
import (
|
||
|
|
"bytes"
|
||
|
|
"fmt"
|
||
|
|
"go/types"
|
||
|
|
"html"
|
||
|
|
"io"
|
||
|
|
"log"
|
||
|
|
"os"
|
||
|
|
"os/exec"
|
||
|
|
"path/filepath"
|
||
|
|
"reflect"
|
||
|
|
"sort"
|
||
|
|
"strings"
|
||
|
|
)
|
||
|
|
|
||
|
|
func live(f *Function) []bool {
|
||
|
|
max := 0
|
||
|
|
var ops []*Value
|
||
|
|
|
||
|
|
for _, b := range f.Blocks {
|
||
|
|
for _, instr := range b.Instrs {
|
||
|
|
if int(instr.ID()) > max {
|
||
|
|
max = int(instr.ID())
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
out := make([]bool, max+1)
|
||
|
|
var q []Node
|
||
|
|
for _, b := range f.Blocks {
|
||
|
|
for _, instr := range b.Instrs {
|
||
|
|
switch instr.(type) {
|
||
|
|
case *BlankStore, *Call, *ConstantSwitch, *Defer, *Go, *If, *Jump, *MapUpdate, *Next, *Panic, *Recv, *Return, *RunDefers, *Send, *Store, *Unreachable:
|
||
|
|
out[instr.ID()] = true
|
||
|
|
q = append(q, instr)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
for len(q) > 0 {
|
||
|
|
v := q[len(q)-1]
|
||
|
|
q = q[:len(q)-1]
|
||
|
|
for _, op := range v.Operands(ops) {
|
||
|
|
if *op == nil {
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
if !out[(*op).ID()] {
|
||
|
|
out[(*op).ID()] = true
|
||
|
|
q = append(q, *op)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return out
|
||
|
|
}
|
||
|
|
|
||
|
|
type funcPrinter interface {
|
||
|
|
startBlock(b *BasicBlock, reachable bool)
|
||
|
|
endBlock(b *BasicBlock)
|
||
|
|
value(v Node, live bool)
|
||
|
|
startDepCycle()
|
||
|
|
endDepCycle()
|
||
|
|
named(n string, vals []Value)
|
||
|
|
}
|
||
|
|
|
||
|
|
func namedValues(f *Function) map[types.Object][]Value {
|
||
|
|
names := map[types.Object][]Value{}
|
||
|
|
for _, b := range f.Blocks {
|
||
|
|
for _, instr := range b.Instrs {
|
||
|
|
if instr, ok := instr.(*DebugRef); ok {
|
||
|
|
if obj := instr.object; obj != nil {
|
||
|
|
names[obj] = append(names[obj], instr.X)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
// XXX deduplicate values
|
||
|
|
return names
|
||
|
|
}
|
||
|
|
|
||
|
|
func fprintFunc(p funcPrinter, f *Function) {
|
||
|
|
// XXX does our IR form preserve unreachable blocks?
|
||
|
|
// reachable, live := findlive(f)
|
||
|
|
|
||
|
|
l := live(f)
|
||
|
|
for _, b := range f.Blocks {
|
||
|
|
// XXX
|
||
|
|
// p.startBlock(b, reachable[b.Index])
|
||
|
|
p.startBlock(b, true)
|
||
|
|
|
||
|
|
end := len(b.Instrs) - 1
|
||
|
|
if end < 0 {
|
||
|
|
end = 0
|
||
|
|
}
|
||
|
|
for _, v := range b.Instrs[:end] {
|
||
|
|
if _, ok := v.(*DebugRef); !ok {
|
||
|
|
p.value(v, l[v.ID()])
|
||
|
|
}
|
||
|
|
}
|
||
|
|
p.endBlock(b)
|
||
|
|
}
|
||
|
|
|
||
|
|
names := namedValues(f)
|
||
|
|
keys := make([]types.Object, 0, len(names))
|
||
|
|
for key := range names {
|
||
|
|
keys = append(keys, key)
|
||
|
|
}
|
||
|
|
sort.Slice(keys, func(i, j int) bool {
|
||
|
|
return keys[i].Pos() < keys[j].Pos()
|
||
|
|
})
|
||
|
|
for _, key := range keys {
|
||
|
|
p.named(key.Name(), names[key])
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func opName(v Node) string {
|
||
|
|
switch v := v.(type) {
|
||
|
|
case *Call:
|
||
|
|
if v.Common().IsInvoke() {
|
||
|
|
return "Invoke"
|
||
|
|
}
|
||
|
|
return "Call"
|
||
|
|
case *Alloc:
|
||
|
|
if v.Heap {
|
||
|
|
return "HeapAlloc"
|
||
|
|
}
|
||
|
|
return "StackAlloc"
|
||
|
|
case *Select:
|
||
|
|
if v.Blocking {
|
||
|
|
return "SelectBlocking"
|
||
|
|
}
|
||
|
|
return "SelectNonBlocking"
|
||
|
|
default:
|
||
|
|
return reflect.ValueOf(v).Type().Elem().Name()
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
type HTMLWriter struct {
|
||
|
|
w io.WriteCloser
|
||
|
|
path string
|
||
|
|
dot *dotWriter
|
||
|
|
}
|
||
|
|
|
||
|
|
func NewHTMLWriter(path string, funcname, cfgMask string) *HTMLWriter {
|
||
|
|
out, err := os.OpenFile(path, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
|
||
|
|
if err != nil {
|
||
|
|
log.Fatalf("%v", err)
|
||
|
|
}
|
||
|
|
pwd, err := os.Getwd()
|
||
|
|
if err != nil {
|
||
|
|
log.Fatalf("%v", err)
|
||
|
|
}
|
||
|
|
html := HTMLWriter{w: out, path: filepath.Join(pwd, path)}
|
||
|
|
html.dot = newDotWriter()
|
||
|
|
html.start(funcname)
|
||
|
|
return &html
|
||
|
|
}
|
||
|
|
|
||
|
|
func (w *HTMLWriter) start(name string) {
|
||
|
|
if w == nil {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
w.WriteString("<html>")
|
||
|
|
w.WriteString(`<head>
|
||
|
|
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
|
||
|
|
<style>
|
||
|
|
|
||
|
|
body {
|
||
|
|
font-size: 14px;
|
||
|
|
font-family: Arial, sans-serif;
|
||
|
|
}
|
||
|
|
|
||
|
|
h1 {
|
||
|
|
font-size: 18px;
|
||
|
|
display: inline-block;
|
||
|
|
margin: 0 1em .5em 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
#helplink {
|
||
|
|
display: inline-block;
|
||
|
|
}
|
||
|
|
|
||
|
|
#help {
|
||
|
|
display: none;
|
||
|
|
}
|
||
|
|
|
||
|
|
.stats {
|
||
|
|
font-size: 60%;
|
||
|
|
}
|
||
|
|
|
||
|
|
table {
|
||
|
|
border: 1px solid black;
|
||
|
|
table-layout: fixed;
|
||
|
|
width: 300px;
|
||
|
|
}
|
||
|
|
|
||
|
|
th, td {
|
||
|
|
border: 1px solid black;
|
||
|
|
overflow: hidden;
|
||
|
|
width: 400px;
|
||
|
|
vertical-align: top;
|
||
|
|
padding: 5px;
|
||
|
|
}
|
||
|
|
|
||
|
|
td > h2 {
|
||
|
|
cursor: pointer;
|
||
|
|
font-size: 120%;
|
||
|
|
}
|
||
|
|
|
||
|
|
td.collapsed {
|
||
|
|
font-size: 12px;
|
||
|
|
width: 12px;
|
||
|
|
border: 0px;
|
||
|
|
padding: 0;
|
||
|
|
cursor: pointer;
|
||
|
|
background: #fafafa;
|
||
|
|
}
|
||
|
|
|
||
|
|
td.collapsed div {
|
||
|
|
-moz-transform: rotate(-90.0deg); /* FF3.5+ */
|
||
|
|
-o-transform: rotate(-90.0deg); /* Opera 10.5 */
|
||
|
|
-webkit-transform: rotate(-90.0deg); /* Saf3.1+, Chrome */
|
||
|
|
filter: progid:DXImageTransform.Microsoft.BasicImage(rotation=0.083); /* IE6,IE7 */
|
||
|
|
-ms-filter: "progid:DXImageTransform.Microsoft.BasicImage(rotation=0.083)"; /* IE8 */
|
||
|
|
margin-top: 10.3em;
|
||
|
|
margin-left: -10em;
|
||
|
|
margin-right: -10em;
|
||
|
|
text-align: right;
|
||
|
|
}
|
||
|
|
|
||
|
|
code, pre, .lines, .ast {
|
||
|
|
font-family: Menlo, monospace;
|
||
|
|
font-size: 12px;
|
||
|
|
}
|
||
|
|
|
||
|
|
pre {
|
||
|
|
-moz-tab-size: 4;
|
||
|
|
-o-tab-size: 4;
|
||
|
|
tab-size: 4;
|
||
|
|
}
|
||
|
|
|
||
|
|
.allow-x-scroll {
|
||
|
|
overflow-x: scroll;
|
||
|
|
}
|
||
|
|
|
||
|
|
.lines {
|
||
|
|
float: left;
|
||
|
|
overflow: hidden;
|
||
|
|
text-align: right;
|
||
|
|
}
|
||
|
|
|
||
|
|
.lines div {
|
||
|
|
padding-right: 10px;
|
||
|
|
color: gray;
|
||
|
|
}
|
||
|
|
|
||
|
|
div.line-number {
|
||
|
|
font-size: 12px;
|
||
|
|
}
|
||
|
|
|
||
|
|
.ast {
|
||
|
|
white-space: nowrap;
|
||
|
|
}
|
||
|
|
|
||
|
|
td.ssa-prog {
|
||
|
|
width: 600px;
|
||
|
|
word-wrap: break-word;
|
||
|
|
}
|
||
|
|
|
||
|
|
li {
|
||
|
|
list-style-type: none;
|
||
|
|
}
|
||
|
|
|
||
|
|
li.ssa-long-value {
|
||
|
|
text-indent: -2em; /* indent wrapped lines */
|
||
|
|
}
|
||
|
|
|
||
|
|
li.ssa-value-list {
|
||
|
|
display: inline;
|
||
|
|
}
|
||
|
|
|
||
|
|
li.ssa-start-block {
|
||
|
|
padding: 0;
|
||
|
|
margin: 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
li.ssa-end-block {
|
||
|
|
padding: 0;
|
||
|
|
margin: 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
ul.ssa-print-func {
|
||
|
|
padding-left: 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
li.ssa-start-block button {
|
||
|
|
padding: 0 1em;
|
||
|
|
margin: 0;
|
||
|
|
border: none;
|
||
|
|
display: inline;
|
||
|
|
font-size: 14px;
|
||
|
|
float: right;
|
||
|
|
}
|
||
|
|
|
||
|
|
button:hover {
|
||
|
|
background-color: #eee;
|
||
|
|
cursor: pointer;
|
||
|
|
}
|
||
|
|
|
||
|
|
dl.ssa-gen {
|
||
|
|
padding-left: 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
dt.ssa-prog-src {
|
||
|
|
padding: 0;
|
||
|
|
margin: 0;
|
||
|
|
float: left;
|
||
|
|
width: 4em;
|
||
|
|
}
|
||
|
|
|
||
|
|
dd.ssa-prog {
|
||
|
|
padding: 0;
|
||
|
|
margin-right: 0;
|
||
|
|
margin-left: 4em;
|
||
|
|
}
|
||
|
|
|
||
|
|
.dead-value {
|
||
|
|
color: gray;
|
||
|
|
}
|
||
|
|
|
||
|
|
.dead-block {
|
||
|
|
opacity: 0.5;
|
||
|
|
}
|
||
|
|
|
||
|
|
.depcycle {
|
||
|
|
font-style: italic;
|
||
|
|
}
|
||
|
|
|
||
|
|
.line-number {
|
||
|
|
font-size: 11px;
|
||
|
|
}
|
||
|
|
|
||
|
|
.no-line-number {
|
||
|
|
font-size: 11px;
|
||
|
|
color: gray;
|
||
|
|
}
|
||
|
|
|
||
|
|
.zoom {
|
||
|
|
position: absolute;
|
||
|
|
float: left;
|
||
|
|
white-space: nowrap;
|
||
|
|
background-color: #eee;
|
||
|
|
}
|
||
|
|
|
||
|
|
.zoom a:link, .zoom a:visited {
|
||
|
|
text-decoration: none;
|
||
|
|
color: blue;
|
||
|
|
font-size: 16px;
|
||
|
|
padding: 4px 2px;
|
||
|
|
}
|
||
|
|
|
||
|
|
svg {
|
||
|
|
cursor: default;
|
||
|
|
outline: 1px solid #eee;
|
||
|
|
}
|
||
|
|
|
||
|
|
.highlight-aquamarine { background-color: aquamarine; }
|
||
|
|
.highlight-coral { background-color: coral; }
|
||
|
|
.highlight-lightpink { background-color: lightpink; }
|
||
|
|
.highlight-lightsteelblue { background-color: lightsteelblue; }
|
||
|
|
.highlight-palegreen { background-color: palegreen; }
|
||
|
|
.highlight-skyblue { background-color: skyblue; }
|
||
|
|
.highlight-lightgray { background-color: lightgray; }
|
||
|
|
.highlight-yellow { background-color: yellow; }
|
||
|
|
.highlight-lime { background-color: lime; }
|
||
|
|
.highlight-khaki { background-color: khaki; }
|
||
|
|
.highlight-aqua { background-color: aqua; }
|
||
|
|
.highlight-salmon { background-color: salmon; }
|
||
|
|
|
||
|
|
.outline-blue { outline: blue solid 2px; }
|
||
|
|
.outline-red { outline: red solid 2px; }
|
||
|
|
.outline-blueviolet { outline: blueviolet solid 2px; }
|
||
|
|
.outline-darkolivegreen { outline: darkolivegreen solid 2px; }
|
||
|
|
.outline-fuchsia { outline: fuchsia solid 2px; }
|
||
|
|
.outline-sienna { outline: sienna solid 2px; }
|
||
|
|
.outline-gold { outline: gold solid 2px; }
|
||
|
|
.outline-orangered { outline: orangered solid 2px; }
|
||
|
|
.outline-teal { outline: teal solid 2px; }
|
||
|
|
.outline-maroon { outline: maroon solid 2px; }
|
||
|
|
.outline-black { outline: black solid 2px; }
|
||
|
|
|
||
|
|
ellipse.outline-blue { stroke-width: 2px; stroke: blue; }
|
||
|
|
ellipse.outline-red { stroke-width: 2px; stroke: red; }
|
||
|
|
ellipse.outline-blueviolet { stroke-width: 2px; stroke: blueviolet; }
|
||
|
|
ellipse.outline-darkolivegreen { stroke-width: 2px; stroke: darkolivegreen; }
|
||
|
|
ellipse.outline-fuchsia { stroke-width: 2px; stroke: fuchsia; }
|
||
|
|
ellipse.outline-sienna { stroke-width: 2px; stroke: sienna; }
|
||
|
|
ellipse.outline-gold { stroke-width: 2px; stroke: gold; }
|
||
|
|
ellipse.outline-orangered { stroke-width: 2px; stroke: orangered; }
|
||
|
|
ellipse.outline-teal { stroke-width: 2px; stroke: teal; }
|
||
|
|
ellipse.outline-maroon { stroke-width: 2px; stroke: maroon; }
|
||
|
|
ellipse.outline-black { stroke-width: 2px; stroke: black; }
|
||
|
|
|
||
|
|
</style>
|
||
|
|
|
||
|
|
<script type="text/javascript">
|
||
|
|
// ordered list of all available highlight colors
|
||
|
|
var highlights = [
|
||
|
|
"highlight-aquamarine",
|
||
|
|
"highlight-coral",
|
||
|
|
"highlight-lightpink",
|
||
|
|
"highlight-lightsteelblue",
|
||
|
|
"highlight-palegreen",
|
||
|
|
"highlight-skyblue",
|
||
|
|
"highlight-lightgray",
|
||
|
|
"highlight-yellow",
|
||
|
|
"highlight-lime",
|
||
|
|
"highlight-khaki",
|
||
|
|
"highlight-aqua",
|
||
|
|
"highlight-salmon"
|
||
|
|
];
|
||
|
|
|
||
|
|
// state: which value is highlighted this color?
|
||
|
|
var highlighted = {};
|
||
|
|
for (var i = 0; i < highlights.length; i++) {
|
||
|
|
highlighted[highlights[i]] = "";
|
||
|
|
}
|
||
|
|
|
||
|
|
// ordered list of all available outline colors
|
||
|
|
var outlines = [
|
||
|
|
"outline-blue",
|
||
|
|
"outline-red",
|
||
|
|
"outline-blueviolet",
|
||
|
|
"outline-darkolivegreen",
|
||
|
|
"outline-fuchsia",
|
||
|
|
"outline-sienna",
|
||
|
|
"outline-gold",
|
||
|
|
"outline-orangered",
|
||
|
|
"outline-teal",
|
||
|
|
"outline-maroon",
|
||
|
|
"outline-black"
|
||
|
|
];
|
||
|
|
|
||
|
|
// state: which value is outlined this color?
|
||
|
|
var outlined = {};
|
||
|
|
for (var i = 0; i < outlines.length; i++) {
|
||
|
|
outlined[outlines[i]] = "";
|
||
|
|
}
|
||
|
|
|
||
|
|
window.onload = function() {
|
||
|
|
var ssaElemClicked = function(elem, event, selections, selected) {
|
||
|
|
event.stopPropagation();
|
||
|
|
|
||
|
|
// TODO: pushState with updated state and read it on page load,
|
||
|
|
// so that state can survive across reloads
|
||
|
|
|
||
|
|
// find all values with the same name
|
||
|
|
var c = elem.classList.item(0);
|
||
|
|
var x = document.getElementsByClassName(c);
|
||
|
|
|
||
|
|
// if selected, remove selections from all of them
|
||
|
|
// otherwise, attempt to add
|
||
|
|
|
||
|
|
var remove = "";
|
||
|
|
for (var i = 0; i < selections.length; i++) {
|
||
|
|
var color = selections[i];
|
||
|
|
if (selected[color] == c) {
|
||
|
|
remove = color;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (remove != "") {
|
||
|
|
for (var i = 0; i < x.length; i++) {
|
||
|
|
x[i].classList.remove(remove);
|
||
|
|
}
|
||
|
|
selected[remove] = "";
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
// we're adding a selection
|
||
|
|
// find first available color
|
||
|
|
var avail = "";
|
||
|
|
for (var i = 0; i < selections.length; i++) {
|
||
|
|
var color = selections[i];
|
||
|
|
if (selected[color] == "") {
|
||
|
|
avail = color;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (avail == "") {
|
||
|
|
alert("out of selection colors; go add more");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
// set that as the selection
|
||
|
|
for (var i = 0; i < x.length; i++) {
|
||
|
|
x[i].classList.add(avail);
|
||
|
|
}
|
||
|
|
selected[avail] = c;
|
||
|
|
};
|
||
|
|
|
||
|
|
var ssaValueClicked = function(event) {
|
||
|
|
ssaElemClicked(this, event, highlights, highlighted);
|
||
|
|
};
|
||
|
|
|
||
|
|
var ssaBlockClicked = function(event) {
|
||
|
|
ssaElemClicked(this, event, outlines, outlined);
|
||
|
|
};
|
||
|
|
|
||
|
|
var ssavalues = document.getElementsByClassName("ssa-value");
|
||
|
|
for (var i = 0; i < ssavalues.length; i++) {
|
||
|
|
ssavalues[i].addEventListener('click', ssaValueClicked);
|
||
|
|
}
|
||
|
|
|
||
|
|
var ssalongvalues = document.getElementsByClassName("ssa-long-value");
|
||
|
|
for (var i = 0; i < ssalongvalues.length; i++) {
|
||
|
|
// don't attach listeners to li nodes, just the spans they contain
|
||
|
|
if (ssalongvalues[i].nodeName == "SPAN") {
|
||
|
|
ssalongvalues[i].addEventListener('click', ssaValueClicked);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
var ssablocks = document.getElementsByClassName("ssa-block");
|
||
|
|
for (var i = 0; i < ssablocks.length; i++) {
|
||
|
|
ssablocks[i].addEventListener('click', ssaBlockClicked);
|
||
|
|
}
|
||
|
|
|
||
|
|
var lines = document.getElementsByClassName("line-number");
|
||
|
|
for (var i = 0; i < lines.length; i++) {
|
||
|
|
lines[i].addEventListener('click', ssaValueClicked);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Contains phase names which are expanded by default. Other columns are collapsed.
|
||
|
|
var expandedDefault = [
|
||
|
|
"start",
|
||
|
|
"deadcode",
|
||
|
|
"opt",
|
||
|
|
"lower",
|
||
|
|
"late deadcode",
|
||
|
|
"regalloc",
|
||
|
|
"genssa",
|
||
|
|
];
|
||
|
|
|
||
|
|
function toggler(phase) {
|
||
|
|
return function() {
|
||
|
|
toggle_cell(phase+'-col');
|
||
|
|
toggle_cell(phase+'-exp');
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
function toggle_cell(id) {
|
||
|
|
var e = document.getElementById(id);
|
||
|
|
if (e.style.display == 'table-cell') {
|
||
|
|
e.style.display = 'none';
|
||
|
|
} else {
|
||
|
|
e.style.display = 'table-cell';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Go through all columns and collapse needed phases.
|
||
|
|
var td = document.getElementsByTagName("td");
|
||
|
|
for (var i = 0; i < td.length; i++) {
|
||
|
|
var id = td[i].id;
|
||
|
|
var phase = id.substr(0, id.length-4);
|
||
|
|
var show = expandedDefault.indexOf(phase) !== -1
|
||
|
|
if (id.endsWith("-exp")) {
|
||
|
|
var h2 = td[i].getElementsByTagName("h2");
|
||
|
|
if (h2 && h2[0]) {
|
||
|
|
h2[0].addEventListener('click', toggler(phase));
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
td[i].addEventListener('click', toggler(phase));
|
||
|
|
}
|
||
|
|
if (id.endsWith("-col") && show || id.endsWith("-exp") && !show) {
|
||
|
|
td[i].style.display = 'none';
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
td[i].style.display = 'table-cell';
|
||
|
|
}
|
||
|
|
|
||
|
|
// find all svg block nodes, add their block classes
|
||
|
|
var nodes = document.querySelectorAll('*[id^="graph_node_"]');
|
||
|
|
for (var i = 0; i < nodes.length; i++) {
|
||
|
|
var node = nodes[i];
|
||
|
|
var name = node.id.toString();
|
||
|
|
var block = name.substring(name.lastIndexOf("_")+1);
|
||
|
|
node.classList.remove("node");
|
||
|
|
node.classList.add(block);
|
||
|
|
node.addEventListener('click', ssaBlockClicked);
|
||
|
|
var ellipse = node.getElementsByTagName('ellipse')[0];
|
||
|
|
ellipse.classList.add(block);
|
||
|
|
ellipse.addEventListener('click', ssaBlockClicked);
|
||
|
|
}
|
||
|
|
|
||
|
|
// make big graphs smaller
|
||
|
|
var targetScale = 0.5;
|
||
|
|
var nodes = document.querySelectorAll('*[id^="svg_graph_"]');
|
||
|
|
// TODO: Implement smarter auto-zoom using the viewBox attribute
|
||
|
|
// and in case of big graphs set the width and height of the svg graph to
|
||
|
|
// maximum allowed.
|
||
|
|
for (var i = 0; i < nodes.length; i++) {
|
||
|
|
var node = nodes[i];
|
||
|
|
var name = node.id.toString();
|
||
|
|
var phase = name.substring(name.lastIndexOf("_")+1);
|
||
|
|
var gNode = document.getElementById("g_graph_"+phase);
|
||
|
|
var scale = gNode.transform.baseVal.getItem(0).matrix.a;
|
||
|
|
if (scale > targetScale) {
|
||
|
|
node.width.baseVal.value *= targetScale / scale;
|
||
|
|
node.height.baseVal.value *= targetScale / scale;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
function toggle_visibility(id) {
|
||
|
|
var e = document.getElementById(id);
|
||
|
|
if (e.style.display == 'block') {
|
||
|
|
e.style.display = 'none';
|
||
|
|
} else {
|
||
|
|
e.style.display = 'block';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
function hideBlock(el) {
|
||
|
|
var es = el.parentNode.parentNode.getElementsByClassName("ssa-value-list");
|
||
|
|
if (es.length===0)
|
||
|
|
return;
|
||
|
|
var e = es[0];
|
||
|
|
if (e.style.display === 'block' || e.style.display === '') {
|
||
|
|
e.style.display = 'none';
|
||
|
|
el.innerHTML = '+';
|
||
|
|
} else {
|
||
|
|
e.style.display = 'block';
|
||
|
|
el.innerHTML = '-';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// TODO: scale the graph with the viewBox attribute.
|
||
|
|
function graphReduce(id) {
|
||
|
|
var node = document.getElementById(id);
|
||
|
|
if (node) {
|
||
|
|
node.width.baseVal.value *= 0.9;
|
||
|
|
node.height.baseVal.value *= 0.9;
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
function graphEnlarge(id) {
|
||
|
|
var node = document.getElementById(id);
|
||
|
|
if (node) {
|
||
|
|
node.width.baseVal.value *= 1.1;
|
||
|
|
node.height.baseVal.value *= 1.1;
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
function makeDraggable(event) {
|
||
|
|
var svg = event.target;
|
||
|
|
if (window.PointerEvent) {
|
||
|
|
svg.addEventListener('pointerdown', startDrag);
|
||
|
|
svg.addEventListener('pointermove', drag);
|
||
|
|
svg.addEventListener('pointerup', endDrag);
|
||
|
|
svg.addEventListener('pointerleave', endDrag);
|
||
|
|
} else {
|
||
|
|
svg.addEventListener('mousedown', startDrag);
|
||
|
|
svg.addEventListener('mousemove', drag);
|
||
|
|
svg.addEventListener('mouseup', endDrag);
|
||
|
|
svg.addEventListener('mouseleave', endDrag);
|
||
|
|
}
|
||
|
|
|
||
|
|
var point = svg.createSVGPoint();
|
||
|
|
var isPointerDown = false;
|
||
|
|
var pointerOrigin;
|
||
|
|
var viewBox = svg.viewBox.baseVal;
|
||
|
|
|
||
|
|
function getPointFromEvent (event) {
|
||
|
|
point.x = event.clientX;
|
||
|
|
point.y = event.clientY;
|
||
|
|
|
||
|
|
// We get the current transformation matrix of the SVG and we inverse it
|
||
|
|
var invertedSVGMatrix = svg.getScreenCTM().inverse();
|
||
|
|
return point.matrixTransform(invertedSVGMatrix);
|
||
|
|
}
|
||
|
|
|
||
|
|
function startDrag(event) {
|
||
|
|
isPointerDown = true;
|
||
|
|
pointerOrigin = getPointFromEvent(event);
|
||
|
|
}
|
||
|
|
|
||
|
|
function drag(event) {
|
||
|
|
if (!isPointerDown) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
event.preventDefault();
|
||
|
|
|
||
|
|
var pointerPosition = getPointFromEvent(event);
|
||
|
|
viewBox.x -= (pointerPosition.x - pointerOrigin.x);
|
||
|
|
viewBox.y -= (pointerPosition.y - pointerOrigin.y);
|
||
|
|
}
|
||
|
|
|
||
|
|
function endDrag(event) {
|
||
|
|
isPointerDown = false;
|
||
|
|
}
|
||
|
|
}</script>
|
||
|
|
|
||
|
|
</head>`)
|
||
|
|
w.WriteString("<body>")
|
||
|
|
w.WriteString("<h1>")
|
||
|
|
w.WriteString(html.EscapeString(name))
|
||
|
|
w.WriteString("</h1>")
|
||
|
|
w.WriteString(`
|
||
|
|
<a href="#" onclick="toggle_visibility('help');return false;" id="helplink">help</a>
|
||
|
|
<div id="help">
|
||
|
|
|
||
|
|
<p>
|
||
|
|
Click on a value or block to toggle highlighting of that value/block
|
||
|
|
and its uses. (Values and blocks are highlighted by ID, and IDs of
|
||
|
|
dead items may be reused, so not all highlights necessarily correspond
|
||
|
|
to the clicked item.)
|
||
|
|
</p>
|
||
|
|
|
||
|
|
<p>
|
||
|
|
Faded out values and blocks are dead code that has not been eliminated.
|
||
|
|
</p>
|
||
|
|
|
||
|
|
<p>
|
||
|
|
Values printed in italics have a dependency cycle.
|
||
|
|
</p>
|
||
|
|
|
||
|
|
<p>
|
||
|
|
<b>CFG</b>: Dashed edge is for unlikely branches. Blue color is for backward edges.
|
||
|
|
Edge with a dot means that this edge follows the order in which blocks were laidout.
|
||
|
|
</p>
|
||
|
|
|
||
|
|
</div>
|
||
|
|
`)
|
||
|
|
w.WriteString("<table>")
|
||
|
|
w.WriteString("<tr>")
|
||
|
|
}
|
||
|
|
|
||
|
|
func (w *HTMLWriter) Close() {
|
||
|
|
if w == nil {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
io.WriteString(w.w, "</tr>")
|
||
|
|
io.WriteString(w.w, "</table>")
|
||
|
|
io.WriteString(w.w, "</body>")
|
||
|
|
io.WriteString(w.w, "</html>")
|
||
|
|
w.w.Close()
|
||
|
|
fmt.Printf("dumped IR to %v\n", w.path)
|
||
|
|
}
|
||
|
|
|
||
|
|
// WriteFunc writes f in a column headed by title.
|
||
|
|
// phase is used for collapsing columns and should be unique across the table.
|
||
|
|
func (w *HTMLWriter) WriteFunc(phase, title string, f *Function) {
|
||
|
|
if w == nil {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
w.WriteColumn(phase, title, "", funcHTML(f, phase, w.dot))
|
||
|
|
}
|
||
|
|
|
||
|
|
// WriteColumn writes raw HTML in a column headed by title.
|
||
|
|
// It is intended for pre- and post-compilation log output.
|
||
|
|
func (w *HTMLWriter) WriteColumn(phase, title, class, html string) {
|
||
|
|
if w == nil {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
id := strings.Replace(phase, " ", "-", -1)
|
||
|
|
// collapsed column
|
||
|
|
w.Printf("<td id=\"%v-col\" class=\"collapsed\"><div>%v</div></td>", id, phase)
|
||
|
|
|
||
|
|
if class == "" {
|
||
|
|
w.Printf("<td id=\"%v-exp\">", id)
|
||
|
|
} else {
|
||
|
|
w.Printf("<td id=\"%v-exp\" class=\"%v\">", id, class)
|
||
|
|
}
|
||
|
|
w.WriteString("<h2>" + title + "</h2>")
|
||
|
|
w.WriteString(html)
|
||
|
|
w.WriteString("</td>")
|
||
|
|
}
|
||
|
|
|
||
|
|
func (w *HTMLWriter) Printf(msg string, v ...interface{}) {
|
||
|
|
if _, err := fmt.Fprintf(w.w, msg, v...); err != nil {
|
||
|
|
log.Fatalf("%v", err)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func (w *HTMLWriter) WriteString(s string) {
|
||
|
|
if _, err := io.WriteString(w.w, s); err != nil {
|
||
|
|
log.Fatalf("%v", err)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func valueHTML(v Node) string {
|
||
|
|
if v == nil {
|
||
|
|
return "<nil>"
|
||
|
|
}
|
||
|
|
// TODO: Using the value ID as the class ignores the fact
|
||
|
|
// that value IDs get recycled and that some values
|
||
|
|
// are transmuted into other values.
|
||
|
|
class := fmt.Sprintf("t%d", v.ID())
|
||
|
|
var label string
|
||
|
|
switch v := v.(type) {
|
||
|
|
case *Function:
|
||
|
|
label = v.RelString(nil)
|
||
|
|
case *Builtin:
|
||
|
|
label = v.Name()
|
||
|
|
default:
|
||
|
|
label = class
|
||
|
|
}
|
||
|
|
return fmt.Sprintf("<span class=\"%s ssa-value\">%s</span>", class, label)
|
||
|
|
}
|
||
|
|
|
||
|
|
func valueLongHTML(v Node) string {
|
||
|
|
// TODO: Any intra-value formatting?
|
||
|
|
// I'm wary of adding too much visual noise,
|
||
|
|
// but a little bit might be valuable.
|
||
|
|
// We already have visual noise in the form of punctuation
|
||
|
|
// maybe we could replace some of that with formatting.
|
||
|
|
s := fmt.Sprintf("<span class=\"t%d ssa-long-value\">", v.ID())
|
||
|
|
|
||
|
|
linenumber := "<span class=\"no-line-number\">(?)</span>"
|
||
|
|
if v.Pos().IsValid() {
|
||
|
|
line := v.Parent().Prog.Fset.Position(v.Pos()).Line
|
||
|
|
linenumber = fmt.Sprintf("<span class=\"l%v line-number\">(%d)</span>", line, line)
|
||
|
|
}
|
||
|
|
|
||
|
|
s += fmt.Sprintf("%s %s = %s", valueHTML(v), linenumber, opName(v))
|
||
|
|
|
||
|
|
if v, ok := v.(Value); ok {
|
||
|
|
s += " <" + html.EscapeString(v.Type().String()) + ">"
|
||
|
|
}
|
||
|
|
|
||
|
|
switch v := v.(type) {
|
||
|
|
case *Parameter:
|
||
|
|
s += fmt.Sprintf(" {%s}", html.EscapeString(v.name))
|
||
|
|
case *BinOp:
|
||
|
|
s += fmt.Sprintf(" {%s}", html.EscapeString(v.Op.String()))
|
||
|
|
case *UnOp:
|
||
|
|
s += fmt.Sprintf(" {%s}", html.EscapeString(v.Op.String()))
|
||
|
|
case *Extract:
|
||
|
|
name := v.Tuple.Type().(*types.Tuple).At(v.Index).Name()
|
||
|
|
s += fmt.Sprintf(" [%d] (%s)", v.Index, name)
|
||
|
|
case *Field:
|
||
|
|
st := v.X.Type().Underlying().(*types.Struct)
|
||
|
|
// Be robust against a bad index.
|
||
|
|
name := "?"
|
||
|
|
if 0 <= v.Field && v.Field < st.NumFields() {
|
||
|
|
name = st.Field(v.Field).Name()
|
||
|
|
}
|
||
|
|
s += fmt.Sprintf(" [%d] (%s)", v.Field, name)
|
||
|
|
case *FieldAddr:
|
||
|
|
st := deref(v.X.Type()).Underlying().(*types.Struct)
|
||
|
|
// Be robust against a bad index.
|
||
|
|
name := "?"
|
||
|
|
if 0 <= v.Field && v.Field < st.NumFields() {
|
||
|
|
name = st.Field(v.Field).Name()
|
||
|
|
}
|
||
|
|
|
||
|
|
s += fmt.Sprintf(" [%d] (%s)", v.Field, name)
|
||
|
|
case *Recv:
|
||
|
|
s += fmt.Sprintf(" {%t}", v.CommaOk)
|
||
|
|
case *Call:
|
||
|
|
if v.Common().IsInvoke() {
|
||
|
|
s += fmt.Sprintf(" {%s}", html.EscapeString(v.Common().Method.FullName()))
|
||
|
|
}
|
||
|
|
case *Const:
|
||
|
|
if v.Value == nil {
|
||
|
|
s += " {<nil>}"
|
||
|
|
} else {
|
||
|
|
s += fmt.Sprintf(" {%s}", html.EscapeString(v.Value.String()))
|
||
|
|
}
|
||
|
|
case *Sigma:
|
||
|
|
s += fmt.Sprintf(" [#%s]", v.From)
|
||
|
|
}
|
||
|
|
for _, a := range v.Operands(nil) {
|
||
|
|
s += fmt.Sprintf(" %s", valueHTML(*a))
|
||
|
|
}
|
||
|
|
|
||
|
|
// OPT(dh): we're calling namedValues many times on the same function.
|
||
|
|
allNames := namedValues(v.Parent())
|
||
|
|
var names []string
|
||
|
|
for name, values := range allNames {
|
||
|
|
for _, value := range values {
|
||
|
|
if v == value {
|
||
|
|
names = append(names, name.Name())
|
||
|
|
break
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if len(names) != 0 {
|
||
|
|
s += " (" + strings.Join(names, ", ") + ")"
|
||
|
|
}
|
||
|
|
|
||
|
|
s += "</span>"
|
||
|
|
return s
|
||
|
|
}
|
||
|
|
|
||
|
|
func blockHTML(b *BasicBlock) string {
|
||
|
|
// TODO: Using the value ID as the class ignores the fact
|
||
|
|
// that value IDs get recycled and that some values
|
||
|
|
// are transmuted into other values.
|
||
|
|
s := html.EscapeString(b.String())
|
||
|
|
return fmt.Sprintf("<span class=\"%s ssa-block\">%s</span>", s, s)
|
||
|
|
}
|
||
|
|
|
||
|
|
func blockLongHTML(b *BasicBlock) string {
|
||
|
|
var kind string
|
||
|
|
var term Instruction
|
||
|
|
if len(b.Instrs) > 0 {
|
||
|
|
term = b.Control()
|
||
|
|
kind = opName(term)
|
||
|
|
}
|
||
|
|
// TODO: improve this for HTML?
|
||
|
|
s := fmt.Sprintf("<span class=\"b%d ssa-block\">%s</span>", b.Index, kind)
|
||
|
|
|
||
|
|
if term != nil {
|
||
|
|
ops := term.Operands(nil)
|
||
|
|
if len(ops) > 0 {
|
||
|
|
var ss []string
|
||
|
|
for _, op := range ops {
|
||
|
|
ss = append(ss, valueHTML(*op))
|
||
|
|
}
|
||
|
|
s += " " + strings.Join(ss, ", ")
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if len(b.Succs) > 0 {
|
||
|
|
s += " →" // right arrow
|
||
|
|
for _, c := range b.Succs {
|
||
|
|
s += " " + blockHTML(c)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return s
|
||
|
|
}
|
||
|
|
|
||
|
|
func funcHTML(f *Function, phase string, dot *dotWriter) string {
|
||
|
|
buf := new(bytes.Buffer)
|
||
|
|
if dot != nil {
|
||
|
|
dot.writeFuncSVG(buf, phase, f)
|
||
|
|
}
|
||
|
|
fmt.Fprint(buf, "<code>")
|
||
|
|
p := htmlFuncPrinter{w: buf}
|
||
|
|
fprintFunc(p, f)
|
||
|
|
|
||
|
|
// fprintFunc(&buf, f) // TODO: HTML, not text, <br /> for line breaks, etc.
|
||
|
|
fmt.Fprint(buf, "</code>")
|
||
|
|
return buf.String()
|
||
|
|
}
|
||
|
|
|
||
|
|
type htmlFuncPrinter struct {
|
||
|
|
w io.Writer
|
||
|
|
}
|
||
|
|
|
||
|
|
func (p htmlFuncPrinter) startBlock(b *BasicBlock, reachable bool) {
|
||
|
|
var dead string
|
||
|
|
if !reachable {
|
||
|
|
dead = "dead-block"
|
||
|
|
}
|
||
|
|
fmt.Fprintf(p.w, "<ul class=\"%s ssa-print-func %s\">", b, dead)
|
||
|
|
fmt.Fprintf(p.w, "<li class=\"ssa-start-block\">%s:", blockHTML(b))
|
||
|
|
if len(b.Preds) > 0 {
|
||
|
|
io.WriteString(p.w, " ←") // left arrow
|
||
|
|
for _, pred := range b.Preds {
|
||
|
|
fmt.Fprintf(p.w, " %s", blockHTML(pred))
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if len(b.Instrs) > 0 {
|
||
|
|
io.WriteString(p.w, `<button onclick="hideBlock(this)">-</button>`)
|
||
|
|
}
|
||
|
|
io.WriteString(p.w, "</li>")
|
||
|
|
if len(b.Instrs) > 0 { // start list of values
|
||
|
|
io.WriteString(p.w, "<li class=\"ssa-value-list\">")
|
||
|
|
io.WriteString(p.w, "<ul>")
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func (p htmlFuncPrinter) endBlock(b *BasicBlock) {
|
||
|
|
if len(b.Instrs) > 0 { // end list of values
|
||
|
|
io.WriteString(p.w, "</ul>")
|
||
|
|
io.WriteString(p.w, "</li>")
|
||
|
|
}
|
||
|
|
io.WriteString(p.w, "<li class=\"ssa-end-block\">")
|
||
|
|
fmt.Fprint(p.w, blockLongHTML(b))
|
||
|
|
io.WriteString(p.w, "</li>")
|
||
|
|
io.WriteString(p.w, "</ul>")
|
||
|
|
}
|
||
|
|
|
||
|
|
func (p htmlFuncPrinter) value(v Node, live bool) {
|
||
|
|
var dead string
|
||
|
|
if !live {
|
||
|
|
dead = "dead-value"
|
||
|
|
}
|
||
|
|
fmt.Fprintf(p.w, "<li class=\"ssa-long-value %s\">", dead)
|
||
|
|
fmt.Fprint(p.w, valueLongHTML(v))
|
||
|
|
io.WriteString(p.w, "</li>")
|
||
|
|
}
|
||
|
|
|
||
|
|
func (p htmlFuncPrinter) startDepCycle() {
|
||
|
|
fmt.Fprintln(p.w, "<span class=\"depcycle\">")
|
||
|
|
}
|
||
|
|
|
||
|
|
func (p htmlFuncPrinter) endDepCycle() {
|
||
|
|
fmt.Fprintln(p.w, "</span>")
|
||
|
|
}
|
||
|
|
|
||
|
|
func (p htmlFuncPrinter) named(n string, vals []Value) {
|
||
|
|
fmt.Fprintf(p.w, "<li>name %s: ", n)
|
||
|
|
for _, val := range vals {
|
||
|
|
fmt.Fprintf(p.w, "%s ", valueHTML(val))
|
||
|
|
}
|
||
|
|
fmt.Fprintf(p.w, "</li>")
|
||
|
|
}
|
||
|
|
|
||
|
|
type dotWriter struct {
|
||
|
|
path string
|
||
|
|
broken bool
|
||
|
|
}
|
||
|
|
|
||
|
|
// newDotWriter returns non-nil value when mask is valid.
|
||
|
|
// dotWriter will generate SVGs only for the phases specified in the mask.
|
||
|
|
// mask can contain following patterns and combinations of them:
|
||
|
|
// * - all of them;
|
||
|
|
// x-y - x through y, inclusive;
|
||
|
|
// x,y - x and y, but not the passes between.
|
||
|
|
func newDotWriter() *dotWriter {
|
||
|
|
path, err := exec.LookPath("dot")
|
||
|
|
if err != nil {
|
||
|
|
fmt.Println(err)
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
return &dotWriter{path: path}
|
||
|
|
}
|
||
|
|
|
||
|
|
func (d *dotWriter) writeFuncSVG(w io.Writer, phase string, f *Function) {
|
||
|
|
if d.broken {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
cmd := exec.Command(d.path, "-Tsvg")
|
||
|
|
pipe, err := cmd.StdinPipe()
|
||
|
|
if err != nil {
|
||
|
|
d.broken = true
|
||
|
|
fmt.Println(err)
|
||
|
|
return
|
||
|
|
}
|
||
|
|
buf := new(bytes.Buffer)
|
||
|
|
cmd.Stdout = buf
|
||
|
|
bufErr := new(bytes.Buffer)
|
||
|
|
cmd.Stderr = bufErr
|
||
|
|
err = cmd.Start()
|
||
|
|
if err != nil {
|
||
|
|
d.broken = true
|
||
|
|
fmt.Println(err)
|
||
|
|
return
|
||
|
|
}
|
||
|
|
fmt.Fprint(pipe, `digraph "" { margin=0; size="4,40"; ranksep=.2; `)
|
||
|
|
id := strings.Replace(phase, " ", "-", -1)
|
||
|
|
fmt.Fprintf(pipe, `id="g_graph_%s";`, id)
|
||
|
|
fmt.Fprintf(pipe, `node [style=filled,fillcolor=white,fontsize=16,fontname="Menlo,Times,serif",margin="0.01,0.03"];`)
|
||
|
|
fmt.Fprintf(pipe, `edge [fontsize=16,fontname="Menlo,Times,serif"];`)
|
||
|
|
for _, b := range f.Blocks {
|
||
|
|
layout := ""
|
||
|
|
fmt.Fprintf(pipe, `%v [label="%v%s\n%v",id="graph_node_%v_%v"];`, b, b, layout, b.Control().String(), id, b)
|
||
|
|
}
|
||
|
|
indexOf := make([]int, len(f.Blocks))
|
||
|
|
for i, b := range f.Blocks {
|
||
|
|
indexOf[b.Index] = i
|
||
|
|
}
|
||
|
|
|
||
|
|
// XXX
|
||
|
|
/*
|
||
|
|
ponums := make([]int32, len(f.Blocks))
|
||
|
|
_ = postorderWithNumbering(f, ponums)
|
||
|
|
isBackEdge := func(from, to int) bool {
|
||
|
|
return ponums[from] <= ponums[to]
|
||
|
|
}
|
||
|
|
*/
|
||
|
|
isBackEdge := func(from, to int) bool { return false }
|
||
|
|
|
||
|
|
for _, b := range f.Blocks {
|
||
|
|
for i, s := range b.Succs {
|
||
|
|
style := "solid"
|
||
|
|
color := "black"
|
||
|
|
arrow := "vee"
|
||
|
|
if isBackEdge(b.Index, s.Index) {
|
||
|
|
color = "blue"
|
||
|
|
}
|
||
|
|
fmt.Fprintf(pipe, `%v -> %v [label=" %d ",style="%s",color="%s",arrowhead="%s"];`, b, s, i, style, color, arrow)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
fmt.Fprint(pipe, "}")
|
||
|
|
pipe.Close()
|
||
|
|
err = cmd.Wait()
|
||
|
|
if err != nil {
|
||
|
|
d.broken = true
|
||
|
|
fmt.Printf("dot: %v\n%v\n", err, bufErr.String())
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
svgID := "svg_graph_" + id
|
||
|
|
fmt.Fprintf(w, `<div class="zoom"><button onclick="return graphReduce('%s');">-</button> <button onclick="return graphEnlarge('%s');">+</button></div>`, svgID, svgID)
|
||
|
|
// For now, an awful hack: edit the html as it passes through
|
||
|
|
// our fingers, finding '<svg ' and injecting needed attributes after it.
|
||
|
|
err = d.copyUntil(w, buf, `<svg `)
|
||
|
|
if err != nil {
|
||
|
|
fmt.Printf("injecting attributes: %v\n", err)
|
||
|
|
return
|
||
|
|
}
|
||
|
|
fmt.Fprintf(w, ` id="%s" onload="makeDraggable(evt)" width="100%%" `, svgID)
|
||
|
|
io.Copy(w, buf)
|
||
|
|
}
|
||
|
|
|
||
|
|
func (d *dotWriter) copyUntil(w io.Writer, buf *bytes.Buffer, sep string) error {
|
||
|
|
i := bytes.Index(buf.Bytes(), []byte(sep))
|
||
|
|
if i == -1 {
|
||
|
|
return fmt.Errorf("couldn't find dot sep %q", sep)
|
||
|
|
}
|
||
|
|
_, err := io.CopyN(w, buf, int64(i+len(sep)))
|
||
|
|
return err
|
||
|
|
}
|