mirror of
https://github.com/mvvasilev/last_light.git
synced 2025-04-11 17:25:01 +03:00
Add web stuff ( broken )
This commit is contained in:
parent
d3477074c7
commit
fb50992ce4
10 changed files with 1019 additions and 2 deletions
4
.gitignore
vendored
4
.gitignore
vendored
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@ -2,4 +2,6 @@ last_light
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last_light.exe
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*.prof
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__debug_bin*
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__debug_bin*
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web/last-light.wasm
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7
go.mod
7
go.mod
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@ -1,6 +1,6 @@
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module mvvasilev/last_light
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go 1.22.2
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go 1.22.4
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require (
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github.com/gdamore/tcell/v2 v2.7.4
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@ -12,7 +12,12 @@ require (
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github.com/lucasb-eyer/go-colorful v1.2.0 // indirect
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github.com/mattn/go-runewidth v0.0.15 // indirect
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github.com/rivo/uniseg v0.4.3 // indirect
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github.com/shurcooL/go v0.0.0-20200502201357-93f07166e636 // indirect
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github.com/shurcooL/go-goon v1.0.0 // indirect
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github.com/shurcooL/goexec v0.0.0-20230709021537-96bada04ea2b // indirect
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golang.org/x/mod v0.8.0 // indirect
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golang.org/x/sys v0.19.0 // indirect
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golang.org/x/term v0.19.0 // indirect
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golang.org/x/text v0.14.0 // indirect
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golang.org/x/tools v0.6.0 // indirect
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)
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8
go.sum
8
go.sum
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@ -11,10 +11,17 @@ github.com/mattn/go-runewidth v0.0.15/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh
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github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
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github.com/rivo/uniseg v0.4.3 h1:utMvzDsuh3suAEnhH0RdHmoPbU648o6CvXxTx4SBMOw=
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github.com/rivo/uniseg v0.4.3/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
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github.com/shurcooL/go v0.0.0-20200502201357-93f07166e636 h1:aSISeOcal5irEhJd1M+IrApc0PdcN7e7Aj4yuEnOrfQ=
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github.com/shurcooL/go v0.0.0-20200502201357-93f07166e636/go.mod h1:TDJrrUr11Vxrven61rcy3hJMUqaf/CLWYhHNPmT14Lk=
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github.com/shurcooL/go-goon v1.0.0 h1:BCQPvxGkHHJ4WpBO4m/9FXbITVIsvAm/T66cCcCGI7E=
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github.com/shurcooL/go-goon v1.0.0/go.mod h1:2wTHMsGo7qnpmqA8ADYZtP4I1DD94JpXGQ3Dxq2YQ5w=
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github.com/shurcooL/goexec v0.0.0-20230709021537-96bada04ea2b h1:637/WtTYN6u1wzt0dCpGdBJHIggB8inZei6q60AZwjk=
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github.com/shurcooL/goexec v0.0.0-20230709021537-96bada04ea2b/go.mod h1:YrZDETqiwAqnKsivK9+sxwhS9rjMR+2NWGy8TATNb6k=
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github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
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golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
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golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
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golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
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golang.org/x/mod v0.8.0 h1:LUYupSeNrTNCGzR/hVBk2NHZO4hXcVaW1k4Qx7rjPx8=
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golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
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golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
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golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
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@ -47,5 +54,6 @@ golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
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golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
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golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
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golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
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golang.org/x/tools v0.6.0 h1:BOw41kyTf3PuCW1pVQf8+Cyg8pMlkYB1oo9iJ6D/lKM=
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golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
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golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
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7
server/main.go
Normal file
7
server/main.go
Normal file
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@ -0,0 +1,7 @@
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package main
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import "net/http"
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func main() {
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http.ListenAndServe(`:8080`, http.FileServer(http.Dir(`./web`)))
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}
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BIN
web/beep.wav
Normal file
BIN
web/beep.wav
Normal file
Binary file not shown.
16
web/index.html
Normal file
16
web/index.html
Normal file
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@ -0,0 +1,16 @@
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8"/>
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<title>last-light</title>
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<link rel="stylesheet" href="termstyle.css">
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<script src="wasm_exec.js"></script>
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</head>
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<body>
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<div id="terminal-container">
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<pre id="terminal"></pre>
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</div>
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<script src="tcell.js"></script>
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</body>
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</html>
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13
web/tcell.html
Normal file
13
web/tcell.html
Normal file
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@ -0,0 +1,13 @@
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8"/>
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<title>Tcell</title>
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<script src="wasm_exec.js"></script>
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<link rel="stylesheet" href="termstyle.css">
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</head>
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<body>
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<pre id="terminal"></pre>
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<script src="tcell.js"></script>
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</body>
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</html>
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284
web/tcell.js
Normal file
284
web/tcell.js
Normal file
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@ -0,0 +1,284 @@
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// Copyright 2024 The TCell Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use file except in compliance with the License.
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// You may obtain a copy of the license at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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const wasmFilePath = "last-light.wasm";
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const term = document.getElementById("terminal");
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var width = 80;
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var height = 24;
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const beepAudio = new Audio("beep.wav");
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var cx = -1;
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var cy = -1;
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var cursorClass = "cursor-blinking-block";
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var cursorColor = "";
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var content; // {data: row[height], dirty: bool}
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// row = {data: element[width], previous: span}
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// dirty/[previous being null] indicates if previous (or entire terminal) needs to be recalculated.
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// dirty is true/null if terminal/previous need to be re-calculated/shown
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function initialize() {
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resize(width, height); // initialize content
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show(); // then show the screen
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}
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function resize(w, h) {
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width = w;
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height = h;
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content = { data: new Array(height), dirty: true };
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for (let i = 0; i < height; i++) {
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content.data[i] = { data: new Array(width), previous: null };
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}
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clearScreen();
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}
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function clearScreen(fg, bg) {
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if (fg) {
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term.style.color = intToHex(fg);
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}
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if (bg) {
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term.style.backgroundColor = intToHex(bg);
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}
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content.dirty = true;
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for (let i = 0; i < height; i++) {
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content.data[i].previous = null; // we set the row to be recalculated later
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for (let j = 0; j < width; j++) {
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content.data[i].data[j] = document.createTextNode(" "); // set the entire row to spaces.
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}
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}
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}
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function drawCell(x, y, s, fg, bg, attrs, us, uc) {
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var span = document.createElement("span");
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var use = false;
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if ((attrs & (1 << 2)) != 0) {
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// reverse video
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var temp = bg;
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bg = fg;
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fg = temp;
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use = true;
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}
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if (fg != -1) {
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span.style.color = intToHex(fg);
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use = true;
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}
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if (bg != -1) {
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span.style.backgroundColor = intToHex(bg);
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use = true;
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}
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// NB: these has to be updated if Attrs.go changes
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if (attrs != 0) {
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use = true;
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if ((attrs & 1) != 0) {
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span.classList.add("bold");
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}
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if ((attrs & (1 << 4)) != 0) {
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span.classList.add("dim");
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}
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if ((attrs & (1 << 5)) != 0) {
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span.classList.add("italic");
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}
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if ((attrs & (1 << 6)) != 0) {
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span.classList.add("strikethrough");
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}
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}
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if (us != 0) {
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use = true;
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if (us == 1) {
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span.classList.add("underline");
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} else if (us == 2) {
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span.classList.add("double_underline");
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} else if (us == 3) {
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span.classList.add("curly_underline");
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} else if (us == 4) {
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span.classList.add("dotted_underline");
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} else if (us == 5) {
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span.classList.add("dashed_underline");
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}
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if (uc != -1) {
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span.style.textDecorationColor = intToHex(uc);
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}
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}
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if ((attrs & (1 << 1)) != 0) {
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var blink = document.createElement("span");
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blink.classList.add("blink");
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var textnode = document.createTextNode(s);
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blink.appendChild(textnode);
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span.appendChild(blink);
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} else {
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var textnode = document.createTextNode(s);
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span.appendChild(textnode);
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}
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content.dirty = true; // invalidate terminal- new cell
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content.data[y].previous = null; // invalidate row- new row
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content.data[y].data[x] = use ? span : textnode;
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}
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function show() {
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if (!content.dirty) {
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return; // no new draws; no need to update
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}
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displayCursor();
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term.innerHTML = "";
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content.data.forEach((row) => {
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if (row.previous == null) {
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row.previous = document.createElement("span");
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row.data.forEach((c) => {
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row.previous.appendChild(c);
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});
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row.previous.appendChild(document.createTextNode("\n"));
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}
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term.appendChild(row.previous);
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});
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content.dirty = false;
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}
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function showCursor(x, y) {
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content.dirty = true;
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|
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if (!(cx < 0 || cy < 0)) {
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// if original position is a valid cursor position
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content.data[cy].previous = null;
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if (content.data[cy].data[cx].classList) {
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content.data[cy].data[cx].classList.remove(cursorClass);
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}
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}
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cx = x;
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cy = y;
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}
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|
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function displayCursor() {
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content.dirty = true;
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|
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if (!(cx < 0 || cy < 0)) {
|
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// if new position is a valid cursor position
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content.data[cy].previous = null;
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|
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if (!content.data[cy].data[cx].classList) {
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var span = document.createElement("span");
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span.appendChild(content.data[cy].data[cx]);
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content.data[cy].data[cx] = span;
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}
|
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|
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if (cursorColor != "") {
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term.style.setProperty("--cursor-color", cursorColor);
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} else {
|
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term.style.setProperty("--cursor-color", "lightgrey");
|
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}
|
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|
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content.data[cy].data[cx].classList.add(cursorClass);
|
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}
|
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}
|
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|
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function setCursorStyle(newClass, newColor) {
|
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if (newClass == cursorClass && newColor == cursorColor) {
|
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return;
|
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}
|
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|
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if (!(cx < 0 || cy < 0)) {
|
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// mark cursor row as dirty; new class has been applied to (cx, cy)
|
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content.dirty = true;
|
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content.data[cy].previous = null;
|
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|
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if (content.data[cy].data[cx].classList) {
|
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content.data[cy].data[cx].classList.remove(cursorClass);
|
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}
|
||||
|
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// adding the new class will be dealt with when displayCursor() is called
|
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}
|
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|
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cursorClass = newClass;
|
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cursorColor = newColor;
|
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}
|
||||
|
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function beep() {
|
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beepAudio.currentTime = 0;
|
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beepAudio.play();
|
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}
|
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|
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function setTitle(title) {
|
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document.title = title;
|
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}
|
||||
|
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function intToHex(n) {
|
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return "#" + n.toString(16).padStart(6, "0");
|
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}
|
||||
|
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initialize();
|
||||
|
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let fontwidth = term.clientWidth / width;
|
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let fontheight = term.clientHeight / height;
|
||||
|
||||
document.addEventListener("keydown", (e) => {
|
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onKeyEvent(e.key, e.shiftKey, e.altKey, e.ctrlKey, e.metaKey);
|
||||
});
|
||||
|
||||
term.addEventListener("click", (e) => {
|
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onMouseClick(
|
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Math.min((e.offsetX / fontwidth) | 0, width - 1),
|
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Math.min((e.offsetY / fontheight) | 0, height - 1),
|
||||
e.which,
|
||||
e.shiftKey,
|
||||
e.altKey,
|
||||
e.ctrlKey
|
||||
);
|
||||
});
|
||||
|
||||
term.addEventListener("mousemove", (e) => {
|
||||
onMouseMove(
|
||||
Math.min((e.offsetX / fontwidth) | 0, width - 1),
|
||||
Math.min((e.offsetY / fontheight) | 0, height - 1),
|
||||
e.which,
|
||||
e.shiftKey,
|
||||
e.altKey,
|
||||
e.ctrlKey
|
||||
);
|
||||
});
|
||||
|
||||
term.addEventListener("focus", (e) => {
|
||||
onFocus(true);
|
||||
});
|
||||
|
||||
term.addEventListener("blur", (e) => {
|
||||
onFocus(false);
|
||||
});
|
||||
|
||||
term.tabIndex = 0;
|
||||
|
||||
document.addEventListener("paste", (e) => {
|
||||
e.preventDefault();
|
||||
var text = (e.originalEvent || e).clipboardData.getData("text/plain");
|
||||
onPaste(true);
|
||||
for (let i = 0; i < text.length; i++) {
|
||||
onKeyEvent(text.charAt(i), false, false, false, false);
|
||||
}
|
||||
onPaste(false);
|
||||
});
|
||||
|
||||
const go = new Go();
|
||||
WebAssembly.instantiateStreaming(fetch(wasmFilePath), go.importObject).then(
|
||||
(result) => {
|
||||
go.run(result.instance);
|
||||
}
|
||||
);
|
||||
121
web/termstyle.css
Normal file
121
web/termstyle.css
Normal file
|
|
@ -0,0 +1,121 @@
|
|||
* {
|
||||
margin: 0;
|
||||
padding: 0;
|
||||
border: 0;
|
||||
outline: 0;
|
||||
font-family: "Menlo", "Andale Mono", "Courier New", Monospace;
|
||||
}
|
||||
|
||||
#terminal-container {
|
||||
text-align: center;
|
||||
}
|
||||
|
||||
#terminal {
|
||||
background-color: black;
|
||||
color: green;
|
||||
display: inline-block;
|
||||
|
||||
/* Copy paste! */
|
||||
user-select: none;
|
||||
-webkit-user-select: none;
|
||||
-khtml-user-select: none;
|
||||
-moz-user-select: none;
|
||||
-ms-user-select: none;
|
||||
--cursor-color: lightgrey;
|
||||
}
|
||||
|
||||
/* Style attributes */
|
||||
|
||||
.bold {
|
||||
font-weight: bold;
|
||||
}
|
||||
|
||||
.blink {
|
||||
animation: blinker 1s step-start infinite;
|
||||
}
|
||||
|
||||
.underline {
|
||||
text-decoration: underline;
|
||||
}
|
||||
|
||||
.dim {
|
||||
filter: brightness(50);
|
||||
}
|
||||
|
||||
.italic {
|
||||
font-style: italic;
|
||||
}
|
||||
|
||||
.strikethrough {
|
||||
text-decoration: line-through;
|
||||
}
|
||||
|
||||
.double_underline {
|
||||
text-decoration: underline double;
|
||||
}
|
||||
|
||||
.curly_underline {
|
||||
text-decoration: underline wavy;
|
||||
}
|
||||
|
||||
.dotted_underline {
|
||||
text-decoration: underline dotted;
|
||||
}
|
||||
|
||||
.dashed_underline {
|
||||
text-decoration: underline dashed;
|
||||
}
|
||||
|
||||
/* Cursor styles */
|
||||
|
||||
.cursor-steady-block {
|
||||
background-color: var(--cursor-color) !important;
|
||||
}
|
||||
.cursor-blinking-block {
|
||||
animation: blinking-block 1s step-start infinite !important;
|
||||
}
|
||||
@keyframes blinking-block {
|
||||
50% {
|
||||
background-color: var(--cursor-color);
|
||||
}
|
||||
}
|
||||
|
||||
.cursor-steady-underline {
|
||||
text-decoration: underline var(--cursor-color) !important;
|
||||
}
|
||||
.cursor-blinking-underline {
|
||||
animation: blinking-underline 1s step-start infinite !important;
|
||||
}
|
||||
@keyframes blinking-underline {
|
||||
50% {
|
||||
text-decoration: underline var(--cursor-color);
|
||||
}
|
||||
}
|
||||
|
||||
.cursor-steady-bar {
|
||||
margin-left: -2px;
|
||||
}
|
||||
.cursor-steady-bar:before {
|
||||
content: " ";
|
||||
width: 2px;
|
||||
background-color: var(--cursor-color) !important;
|
||||
display: inline-block;
|
||||
}
|
||||
.cursor-blinking-bar {
|
||||
margin-left: -2px;
|
||||
}
|
||||
.cursor-blinking-bar:before {
|
||||
content: " ";
|
||||
width: 2px;
|
||||
background-color: var(--cursor-color) !important;
|
||||
display: inline-block;
|
||||
animation: blinker 1s step-start infinite;
|
||||
}
|
||||
|
||||
/* General animations */
|
||||
|
||||
@keyframes blinker {
|
||||
50% {
|
||||
opacity: 0;
|
||||
}
|
||||
}
|
||||
561
web/wasm_exec.js
Normal file
561
web/wasm_exec.js
Normal file
|
|
@ -0,0 +1,561 @@
|
|||
// Copyright 2018 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
"use strict";
|
||||
|
||||
(() => {
|
||||
const enosys = () => {
|
||||
const err = new Error("not implemented");
|
||||
err.code = "ENOSYS";
|
||||
return err;
|
||||
};
|
||||
|
||||
if (!globalThis.fs) {
|
||||
let outputBuf = "";
|
||||
globalThis.fs = {
|
||||
constants: { O_WRONLY: -1, O_RDWR: -1, O_CREAT: -1, O_TRUNC: -1, O_APPEND: -1, O_EXCL: -1 }, // unused
|
||||
writeSync(fd, buf) {
|
||||
outputBuf += decoder.decode(buf);
|
||||
const nl = outputBuf.lastIndexOf("\n");
|
||||
if (nl != -1) {
|
||||
console.log(outputBuf.substring(0, nl));
|
||||
outputBuf = outputBuf.substring(nl + 1);
|
||||
}
|
||||
return buf.length;
|
||||
},
|
||||
write(fd, buf, offset, length, position, callback) {
|
||||
if (offset !== 0 || length !== buf.length || position !== null) {
|
||||
callback(enosys());
|
||||
return;
|
||||
}
|
||||
const n = this.writeSync(fd, buf);
|
||||
callback(null, n);
|
||||
},
|
||||
chmod(path, mode, callback) { callback(enosys()); },
|
||||
chown(path, uid, gid, callback) { callback(enosys()); },
|
||||
close(fd, callback) { callback(enosys()); },
|
||||
fchmod(fd, mode, callback) { callback(enosys()); },
|
||||
fchown(fd, uid, gid, callback) { callback(enosys()); },
|
||||
fstat(fd, callback) { callback(enosys()); },
|
||||
fsync(fd, callback) { callback(null); },
|
||||
ftruncate(fd, length, callback) { callback(enosys()); },
|
||||
lchown(path, uid, gid, callback) { callback(enosys()); },
|
||||
link(path, link, callback) { callback(enosys()); },
|
||||
lstat(path, callback) { callback(enosys()); },
|
||||
mkdir(path, perm, callback) { callback(enosys()); },
|
||||
open(path, flags, mode, callback) { callback(enosys()); },
|
||||
read(fd, buffer, offset, length, position, callback) { callback(enosys()); },
|
||||
readdir(path, callback) { callback(enosys()); },
|
||||
readlink(path, callback) { callback(enosys()); },
|
||||
rename(from, to, callback) { callback(enosys()); },
|
||||
rmdir(path, callback) { callback(enosys()); },
|
||||
stat(path, callback) { callback(enosys()); },
|
||||
symlink(path, link, callback) { callback(enosys()); },
|
||||
truncate(path, length, callback) { callback(enosys()); },
|
||||
unlink(path, callback) { callback(enosys()); },
|
||||
utimes(path, atime, mtime, callback) { callback(enosys()); },
|
||||
};
|
||||
}
|
||||
|
||||
if (!globalThis.process) {
|
||||
globalThis.process = {
|
||||
getuid() { return -1; },
|
||||
getgid() { return -1; },
|
||||
geteuid() { return -1; },
|
||||
getegid() { return -1; },
|
||||
getgroups() { throw enosys(); },
|
||||
pid: -1,
|
||||
ppid: -1,
|
||||
umask() { throw enosys(); },
|
||||
cwd() { throw enosys(); },
|
||||
chdir() { throw enosys(); },
|
||||
}
|
||||
}
|
||||
|
||||
if (!globalThis.crypto) {
|
||||
throw new Error("globalThis.crypto is not available, polyfill required (crypto.getRandomValues only)");
|
||||
}
|
||||
|
||||
if (!globalThis.performance) {
|
||||
throw new Error("globalThis.performance is not available, polyfill required (performance.now only)");
|
||||
}
|
||||
|
||||
if (!globalThis.TextEncoder) {
|
||||
throw new Error("globalThis.TextEncoder is not available, polyfill required");
|
||||
}
|
||||
|
||||
if (!globalThis.TextDecoder) {
|
||||
throw new Error("globalThis.TextDecoder is not available, polyfill required");
|
||||
}
|
||||
|
||||
const encoder = new TextEncoder("utf-8");
|
||||
const decoder = new TextDecoder("utf-8");
|
||||
|
||||
globalThis.Go = class {
|
||||
constructor() {
|
||||
this.argv = ["js"];
|
||||
this.env = {};
|
||||
this.exit = (code) => {
|
||||
if (code !== 0) {
|
||||
console.warn("exit code:", code);
|
||||
}
|
||||
};
|
||||
this._exitPromise = new Promise((resolve) => {
|
||||
this._resolveExitPromise = resolve;
|
||||
});
|
||||
this._pendingEvent = null;
|
||||
this._scheduledTimeouts = new Map();
|
||||
this._nextCallbackTimeoutID = 1;
|
||||
|
||||
const setInt64 = (addr, v) => {
|
||||
this.mem.setUint32(addr + 0, v, true);
|
||||
this.mem.setUint32(addr + 4, Math.floor(v / 4294967296), true);
|
||||
}
|
||||
|
||||
const setInt32 = (addr, v) => {
|
||||
this.mem.setUint32(addr + 0, v, true);
|
||||
}
|
||||
|
||||
const getInt64 = (addr) => {
|
||||
const low = this.mem.getUint32(addr + 0, true);
|
||||
const high = this.mem.getInt32(addr + 4, true);
|
||||
return low + high * 4294967296;
|
||||
}
|
||||
|
||||
const loadValue = (addr) => {
|
||||
const f = this.mem.getFloat64(addr, true);
|
||||
if (f === 0) {
|
||||
return undefined;
|
||||
}
|
||||
if (!isNaN(f)) {
|
||||
return f;
|
||||
}
|
||||
|
||||
const id = this.mem.getUint32(addr, true);
|
||||
return this._values[id];
|
||||
}
|
||||
|
||||
const storeValue = (addr, v) => {
|
||||
const nanHead = 0x7FF80000;
|
||||
|
||||
if (typeof v === "number" && v !== 0) {
|
||||
if (isNaN(v)) {
|
||||
this.mem.setUint32(addr + 4, nanHead, true);
|
||||
this.mem.setUint32(addr, 0, true);
|
||||
return;
|
||||
}
|
||||
this.mem.setFloat64(addr, v, true);
|
||||
return;
|
||||
}
|
||||
|
||||
if (v === undefined) {
|
||||
this.mem.setFloat64(addr, 0, true);
|
||||
return;
|
||||
}
|
||||
|
||||
let id = this._ids.get(v);
|
||||
if (id === undefined) {
|
||||
id = this._idPool.pop();
|
||||
if (id === undefined) {
|
||||
id = this._values.length;
|
||||
}
|
||||
this._values[id] = v;
|
||||
this._goRefCounts[id] = 0;
|
||||
this._ids.set(v, id);
|
||||
}
|
||||
this._goRefCounts[id]++;
|
||||
let typeFlag = 0;
|
||||
switch (typeof v) {
|
||||
case "object":
|
||||
if (v !== null) {
|
||||
typeFlag = 1;
|
||||
}
|
||||
break;
|
||||
case "string":
|
||||
typeFlag = 2;
|
||||
break;
|
||||
case "symbol":
|
||||
typeFlag = 3;
|
||||
break;
|
||||
case "function":
|
||||
typeFlag = 4;
|
||||
break;
|
||||
}
|
||||
this.mem.setUint32(addr + 4, nanHead | typeFlag, true);
|
||||
this.mem.setUint32(addr, id, true);
|
||||
}
|
||||
|
||||
const loadSlice = (addr) => {
|
||||
const array = getInt64(addr + 0);
|
||||
const len = getInt64(addr + 8);
|
||||
return new Uint8Array(this._inst.exports.mem.buffer, array, len);
|
||||
}
|
||||
|
||||
const loadSliceOfValues = (addr) => {
|
||||
const array = getInt64(addr + 0);
|
||||
const len = getInt64(addr + 8);
|
||||
const a = new Array(len);
|
||||
for (let i = 0; i < len; i++) {
|
||||
a[i] = loadValue(array + i * 8);
|
||||
}
|
||||
return a;
|
||||
}
|
||||
|
||||
const loadString = (addr) => {
|
||||
const saddr = getInt64(addr + 0);
|
||||
const len = getInt64(addr + 8);
|
||||
return decoder.decode(new DataView(this._inst.exports.mem.buffer, saddr, len));
|
||||
}
|
||||
|
||||
const timeOrigin = Date.now() - performance.now();
|
||||
this.importObject = {
|
||||
_gotest: {
|
||||
add: (a, b) => a + b,
|
||||
},
|
||||
gojs: {
|
||||
// Go's SP does not change as long as no Go code is running. Some operations (e.g. calls, getters and setters)
|
||||
// may synchronously trigger a Go event handler. This makes Go code get executed in the middle of the imported
|
||||
// function. A goroutine can switch to a new stack if the current stack is too small (see morestack function).
|
||||
// This changes the SP, thus we have to update the SP used by the imported function.
|
||||
|
||||
// func wasmExit(code int32)
|
||||
"runtime.wasmExit": (sp) => {
|
||||
sp >>>= 0;
|
||||
const code = this.mem.getInt32(sp + 8, true);
|
||||
this.exited = true;
|
||||
delete this._inst;
|
||||
delete this._values;
|
||||
delete this._goRefCounts;
|
||||
delete this._ids;
|
||||
delete this._idPool;
|
||||
this.exit(code);
|
||||
},
|
||||
|
||||
// func wasmWrite(fd uintptr, p unsafe.Pointer, n int32)
|
||||
"runtime.wasmWrite": (sp) => {
|
||||
sp >>>= 0;
|
||||
const fd = getInt64(sp + 8);
|
||||
const p = getInt64(sp + 16);
|
||||
const n = this.mem.getInt32(sp + 24, true);
|
||||
fs.writeSync(fd, new Uint8Array(this._inst.exports.mem.buffer, p, n));
|
||||
},
|
||||
|
||||
// func resetMemoryDataView()
|
||||
"runtime.resetMemoryDataView": (sp) => {
|
||||
sp >>>= 0;
|
||||
this.mem = new DataView(this._inst.exports.mem.buffer);
|
||||
},
|
||||
|
||||
// func nanotime1() int64
|
||||
"runtime.nanotime1": (sp) => {
|
||||
sp >>>= 0;
|
||||
setInt64(sp + 8, (timeOrigin + performance.now()) * 1000000);
|
||||
},
|
||||
|
||||
// func walltime() (sec int64, nsec int32)
|
||||
"runtime.walltime": (sp) => {
|
||||
sp >>>= 0;
|
||||
const msec = (new Date).getTime();
|
||||
setInt64(sp + 8, msec / 1000);
|
||||
this.mem.setInt32(sp + 16, (msec % 1000) * 1000000, true);
|
||||
},
|
||||
|
||||
// func scheduleTimeoutEvent(delay int64) int32
|
||||
"runtime.scheduleTimeoutEvent": (sp) => {
|
||||
sp >>>= 0;
|
||||
const id = this._nextCallbackTimeoutID;
|
||||
this._nextCallbackTimeoutID++;
|
||||
this._scheduledTimeouts.set(id, setTimeout(
|
||||
() => {
|
||||
this._resume();
|
||||
while (this._scheduledTimeouts.has(id)) {
|
||||
// for some reason Go failed to register the timeout event, log and try again
|
||||
// (temporary workaround for https://github.com/golang/go/issues/28975)
|
||||
console.warn("scheduleTimeoutEvent: missed timeout event");
|
||||
this._resume();
|
||||
}
|
||||
},
|
||||
getInt64(sp + 8),
|
||||
));
|
||||
this.mem.setInt32(sp + 16, id, true);
|
||||
},
|
||||
|
||||
// func clearTimeoutEvent(id int32)
|
||||
"runtime.clearTimeoutEvent": (sp) => {
|
||||
sp >>>= 0;
|
||||
const id = this.mem.getInt32(sp + 8, true);
|
||||
clearTimeout(this._scheduledTimeouts.get(id));
|
||||
this._scheduledTimeouts.delete(id);
|
||||
},
|
||||
|
||||
// func getRandomData(r []byte)
|
||||
"runtime.getRandomData": (sp) => {
|
||||
sp >>>= 0;
|
||||
crypto.getRandomValues(loadSlice(sp + 8));
|
||||
},
|
||||
|
||||
// func finalizeRef(v ref)
|
||||
"syscall/js.finalizeRef": (sp) => {
|
||||
sp >>>= 0;
|
||||
const id = this.mem.getUint32(sp + 8, true);
|
||||
this._goRefCounts[id]--;
|
||||
if (this._goRefCounts[id] === 0) {
|
||||
const v = this._values[id];
|
||||
this._values[id] = null;
|
||||
this._ids.delete(v);
|
||||
this._idPool.push(id);
|
||||
}
|
||||
},
|
||||
|
||||
// func stringVal(value string) ref
|
||||
"syscall/js.stringVal": (sp) => {
|
||||
sp >>>= 0;
|
||||
storeValue(sp + 24, loadString(sp + 8));
|
||||
},
|
||||
|
||||
// func valueGet(v ref, p string) ref
|
||||
"syscall/js.valueGet": (sp) => {
|
||||
sp >>>= 0;
|
||||
const result = Reflect.get(loadValue(sp + 8), loadString(sp + 16));
|
||||
sp = this._inst.exports.getsp() >>> 0; // see comment above
|
||||
storeValue(sp + 32, result);
|
||||
},
|
||||
|
||||
// func valueSet(v ref, p string, x ref)
|
||||
"syscall/js.valueSet": (sp) => {
|
||||
sp >>>= 0;
|
||||
Reflect.set(loadValue(sp + 8), loadString(sp + 16), loadValue(sp + 32));
|
||||
},
|
||||
|
||||
// func valueDelete(v ref, p string)
|
||||
"syscall/js.valueDelete": (sp) => {
|
||||
sp >>>= 0;
|
||||
Reflect.deleteProperty(loadValue(sp + 8), loadString(sp + 16));
|
||||
},
|
||||
|
||||
// func valueIndex(v ref, i int) ref
|
||||
"syscall/js.valueIndex": (sp) => {
|
||||
sp >>>= 0;
|
||||
storeValue(sp + 24, Reflect.get(loadValue(sp + 8), getInt64(sp + 16)));
|
||||
},
|
||||
|
||||
// valueSetIndex(v ref, i int, x ref)
|
||||
"syscall/js.valueSetIndex": (sp) => {
|
||||
sp >>>= 0;
|
||||
Reflect.set(loadValue(sp + 8), getInt64(sp + 16), loadValue(sp + 24));
|
||||
},
|
||||
|
||||
// func valueCall(v ref, m string, args []ref) (ref, bool)
|
||||
"syscall/js.valueCall": (sp) => {
|
||||
sp >>>= 0;
|
||||
try {
|
||||
const v = loadValue(sp + 8);
|
||||
const m = Reflect.get(v, loadString(sp + 16));
|
||||
const args = loadSliceOfValues(sp + 32);
|
||||
const result = Reflect.apply(m, v, args);
|
||||
sp = this._inst.exports.getsp() >>> 0; // see comment above
|
||||
storeValue(sp + 56, result);
|
||||
this.mem.setUint8(sp + 64, 1);
|
||||
} catch (err) {
|
||||
sp = this._inst.exports.getsp() >>> 0; // see comment above
|
||||
storeValue(sp + 56, err);
|
||||
this.mem.setUint8(sp + 64, 0);
|
||||
}
|
||||
},
|
||||
|
||||
// func valueInvoke(v ref, args []ref) (ref, bool)
|
||||
"syscall/js.valueInvoke": (sp) => {
|
||||
sp >>>= 0;
|
||||
try {
|
||||
const v = loadValue(sp + 8);
|
||||
const args = loadSliceOfValues(sp + 16);
|
||||
const result = Reflect.apply(v, undefined, args);
|
||||
sp = this._inst.exports.getsp() >>> 0; // see comment above
|
||||
storeValue(sp + 40, result);
|
||||
this.mem.setUint8(sp + 48, 1);
|
||||
} catch (err) {
|
||||
sp = this._inst.exports.getsp() >>> 0; // see comment above
|
||||
storeValue(sp + 40, err);
|
||||
this.mem.setUint8(sp + 48, 0);
|
||||
}
|
||||
},
|
||||
|
||||
// func valueNew(v ref, args []ref) (ref, bool)
|
||||
"syscall/js.valueNew": (sp) => {
|
||||
sp >>>= 0;
|
||||
try {
|
||||
const v = loadValue(sp + 8);
|
||||
const args = loadSliceOfValues(sp + 16);
|
||||
const result = Reflect.construct(v, args);
|
||||
sp = this._inst.exports.getsp() >>> 0; // see comment above
|
||||
storeValue(sp + 40, result);
|
||||
this.mem.setUint8(sp + 48, 1);
|
||||
} catch (err) {
|
||||
sp = this._inst.exports.getsp() >>> 0; // see comment above
|
||||
storeValue(sp + 40, err);
|
||||
this.mem.setUint8(sp + 48, 0);
|
||||
}
|
||||
},
|
||||
|
||||
// func valueLength(v ref) int
|
||||
"syscall/js.valueLength": (sp) => {
|
||||
sp >>>= 0;
|
||||
setInt64(sp + 16, parseInt(loadValue(sp + 8).length));
|
||||
},
|
||||
|
||||
// valuePrepareString(v ref) (ref, int)
|
||||
"syscall/js.valuePrepareString": (sp) => {
|
||||
sp >>>= 0;
|
||||
const str = encoder.encode(String(loadValue(sp + 8)));
|
||||
storeValue(sp + 16, str);
|
||||
setInt64(sp + 24, str.length);
|
||||
},
|
||||
|
||||
// valueLoadString(v ref, b []byte)
|
||||
"syscall/js.valueLoadString": (sp) => {
|
||||
sp >>>= 0;
|
||||
const str = loadValue(sp + 8);
|
||||
loadSlice(sp + 16).set(str);
|
||||
},
|
||||
|
||||
// func valueInstanceOf(v ref, t ref) bool
|
||||
"syscall/js.valueInstanceOf": (sp) => {
|
||||
sp >>>= 0;
|
||||
this.mem.setUint8(sp + 24, (loadValue(sp + 8) instanceof loadValue(sp + 16)) ? 1 : 0);
|
||||
},
|
||||
|
||||
// func copyBytesToGo(dst []byte, src ref) (int, bool)
|
||||
"syscall/js.copyBytesToGo": (sp) => {
|
||||
sp >>>= 0;
|
||||
const dst = loadSlice(sp + 8);
|
||||
const src = loadValue(sp + 32);
|
||||
if (!(src instanceof Uint8Array || src instanceof Uint8ClampedArray)) {
|
||||
this.mem.setUint8(sp + 48, 0);
|
||||
return;
|
||||
}
|
||||
const toCopy = src.subarray(0, dst.length);
|
||||
dst.set(toCopy);
|
||||
setInt64(sp + 40, toCopy.length);
|
||||
this.mem.setUint8(sp + 48, 1);
|
||||
},
|
||||
|
||||
// func copyBytesToJS(dst ref, src []byte) (int, bool)
|
||||
"syscall/js.copyBytesToJS": (sp) => {
|
||||
sp >>>= 0;
|
||||
const dst = loadValue(sp + 8);
|
||||
const src = loadSlice(sp + 16);
|
||||
if (!(dst instanceof Uint8Array || dst instanceof Uint8ClampedArray)) {
|
||||
this.mem.setUint8(sp + 48, 0);
|
||||
return;
|
||||
}
|
||||
const toCopy = src.subarray(0, dst.length);
|
||||
dst.set(toCopy);
|
||||
setInt64(sp + 40, toCopy.length);
|
||||
this.mem.setUint8(sp + 48, 1);
|
||||
},
|
||||
|
||||
"debug": (value) => {
|
||||
console.log(value);
|
||||
},
|
||||
}
|
||||
};
|
||||
}
|
||||
|
||||
async run(instance) {
|
||||
if (!(instance instanceof WebAssembly.Instance)) {
|
||||
throw new Error("Go.run: WebAssembly.Instance expected");
|
||||
}
|
||||
this._inst = instance;
|
||||
this.mem = new DataView(this._inst.exports.mem.buffer);
|
||||
this._values = [ // JS values that Go currently has references to, indexed by reference id
|
||||
NaN,
|
||||
0,
|
||||
null,
|
||||
true,
|
||||
false,
|
||||
globalThis,
|
||||
this,
|
||||
];
|
||||
this._goRefCounts = new Array(this._values.length).fill(Infinity); // number of references that Go has to a JS value, indexed by reference id
|
||||
this._ids = new Map([ // mapping from JS values to reference ids
|
||||
[0, 1],
|
||||
[null, 2],
|
||||
[true, 3],
|
||||
[false, 4],
|
||||
[globalThis, 5],
|
||||
[this, 6],
|
||||
]);
|
||||
this._idPool = []; // unused ids that have been garbage collected
|
||||
this.exited = false; // whether the Go program has exited
|
||||
|
||||
// Pass command line arguments and environment variables to WebAssembly by writing them to the linear memory.
|
||||
let offset = 4096;
|
||||
|
||||
const strPtr = (str) => {
|
||||
const ptr = offset;
|
||||
const bytes = encoder.encode(str + "\0");
|
||||
new Uint8Array(this.mem.buffer, offset, bytes.length).set(bytes);
|
||||
offset += bytes.length;
|
||||
if (offset % 8 !== 0) {
|
||||
offset += 8 - (offset % 8);
|
||||
}
|
||||
return ptr;
|
||||
};
|
||||
|
||||
const argc = this.argv.length;
|
||||
|
||||
const argvPtrs = [];
|
||||
this.argv.forEach((arg) => {
|
||||
argvPtrs.push(strPtr(arg));
|
||||
});
|
||||
argvPtrs.push(0);
|
||||
|
||||
const keys = Object.keys(this.env).sort();
|
||||
keys.forEach((key) => {
|
||||
argvPtrs.push(strPtr(`${key}=${this.env[key]}`));
|
||||
});
|
||||
argvPtrs.push(0);
|
||||
|
||||
const argv = offset;
|
||||
argvPtrs.forEach((ptr) => {
|
||||
this.mem.setUint32(offset, ptr, true);
|
||||
this.mem.setUint32(offset + 4, 0, true);
|
||||
offset += 8;
|
||||
});
|
||||
|
||||
// The linker guarantees global data starts from at least wasmMinDataAddr.
|
||||
// Keep in sync with cmd/link/internal/ld/data.go:wasmMinDataAddr.
|
||||
const wasmMinDataAddr = 4096 + 8192;
|
||||
if (offset >= wasmMinDataAddr) {
|
||||
throw new Error("total length of command line and environment variables exceeds limit");
|
||||
}
|
||||
|
||||
this._inst.exports.run(argc, argv);
|
||||
if (this.exited) {
|
||||
this._resolveExitPromise();
|
||||
}
|
||||
await this._exitPromise;
|
||||
}
|
||||
|
||||
_resume() {
|
||||
if (this.exited) {
|
||||
throw new Error("Go program has already exited");
|
||||
}
|
||||
this._inst.exports.resume();
|
||||
if (this.exited) {
|
||||
this._resolveExitPromise();
|
||||
}
|
||||
}
|
||||
|
||||
_makeFuncWrapper(id) {
|
||||
const go = this;
|
||||
return function () {
|
||||
const event = { id: id, this: this, args: arguments };
|
||||
go._pendingEvent = event;
|
||||
go._resume();
|
||||
return event.result;
|
||||
};
|
||||
}
|
||||
}
|
||||
})();
|
||||
Loading…
Add table
Reference in a new issue