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feat: improve vscode debugging compatibility

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TopchetoEU 2023-10-29 12:25:33 +02:00
parent 16a9e5d761
commit 942db54546
Signed by: topchetoeu
GPG Key ID: 6531B8583E5F6ED4
5 changed files with 83 additions and 26 deletions
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2
src/me/topchetoeu/jscript/engine/debug/DebugHandler.java
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@ -25,11 +25,11 @@ public interface DebugHandler {
void getProperties(V8Message msg);
void releaseObjectGroup(V8Message msg);
void releaseObject(V8Message msg);
/**
* This method might not execute the actual code for well-known requests
*/
void callFunctionOn(V8Message msg);
// void nodeWorkerEnable(V8Message msg);
void runtimeEnable(V8Message msg);
}

2
src/me/topchetoeu/jscript/engine/debug/DebugServer.java
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@ -59,7 +59,6 @@ public class DebugServer {
try {
msg = new V8Message(raw.textData());
// System.out.println(msg.name + ": " + JSON.stringify(msg.params));
}
catch (SyntaxException e) {
ws.send(new V8Error(e.getMessage()));
@ -90,6 +89,7 @@ public class DebugServer {
case "Debugger.evaluateOnCallFrame": debugger.evaluateOnCallFrame(msg); continue;
case "Runtime.releaseObjectGroup": debugger.releaseObjectGroup(msg); continue;
case "Runtime.releaseObject": debugger.releaseObject(msg); continue;
case "Runtime.getProperties": debugger.getProperties(msg); continue;
case "Runtime.callFunctionOn": debugger.callFunctionOn(msg); continue;
// case "NodeWorker.enable": debugger.nodeWorkerEnable(msg); continue;

72
src/me/topchetoeu/jscript/engine/debug/SimpleDebugger.java
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@ -40,6 +40,12 @@ import me.topchetoeu.jscript.lib.GeneratorLib.Generator;
public class SimpleDebugger implements Debugger {
public static final String CHROME_GET_PROP_FUNC = "function s(e){let t=this;const n=JSON.parse(e);for(let e=0,i=n.length;e<i;++e)t=t[n[e]];return t}";
public static final String VSCODE_STRINGIFY_VAL = "function(...runtimeArgs){\n let t = 1024; let e = null;\n if(e)try{let r=\"<<default preview>>\",i=e.call(this,r);if(i!==r)return String(i)}catch(r){return`<<indescribable>>${JSON.stringify([String(r),\"object\"])}`}if(typeof this==\"object\"&&this){let r;for(let i of[Symbol.for(\"debug.description\"),Symbol.for(\"nodejs.util.inspect.custom\")])try{r=this[i]();break}catch{}if(!r&&!String(this.toString).includes(\"[native code]\")&&(r=String(this)),r&&!r.startsWith(\"[object \"))return r.length>=t?r.slice(0,t)+\"\\u2026\":r}\n ;\n\n}";
public static final String VSCODE_STRINGIFY_PROPS = "function(...runtimeArgs){\n let t = 1024; let e = null;\n let r={},i=\"<<default preview>>\";if(typeof this!=\"object\"||!this)return r;for(let[n,s]of Object.entries(this)){if(e)try{let o=e.call(s,i);if(o!==i){r[n]=String(o);continue}}catch(o){r[n]=`<<indescribable>>${JSON.stringify([String(o),n])}`;continue}if(typeof s==\"object\"&&s){let o;for(let a of runtimeArgs[0])try{o=s[a]();break}catch{}!o&&!String(s.toString).includes(\"[native code]\")&&(o=String(s)),o&&!o.startsWith(\"[object \")&&(r[n]=o.length>=t?o.slice(0,t)+\"\\u2026\":o)}}return r\n ;\n\n}";
public static final String VSCODE_SYMBOL_REQUEST = "function(){return[Symbol.for(\"debug.description\"),Symbol.for(\"nodejs.util.inspect.custom\")]\n}";
public static final String VSCODE_SHALLOW_COPY = "function(){let t={__proto__:this.__proto__\n},e=Object.getOwnPropertyNames(this);for(let r=0;r<e.length;++r){let i=e[r],n=i>>>0;if(String(n>>>0)===i&&n>>>0!==4294967295)continue;let s=Object.getOwnPropertyDescriptor(this,i);s&&Object.defineProperty(t,i,s)}return t}";
public static final String VSCODE_FLATTEN_ARRAY = "function(t,e){let r={\n},i=t===-1?0:t,n=e===-1?this.length:t+e;for(let s=i;s<n&&s<this.length;++s){let o=Object.getOwnPropertyDescriptor(this,s);o&&Object.defineProperty(r,s,o)}return r}";
public static final String VSCODE_CALL = "function(t){return t.call(this)\n}";
private static enum State {
RESUMED,
@ -131,8 +137,7 @@ public class SimpleDebugger implements Debugger {
.add(new JSONMap().set("type", "local").set("name", "Local Scope").set("object", serializeObj(ctx, local)))
.add(new JSONMap().set("type", "closure").set("name", "Closure").set("object", serializeObj(ctx, capture)))
.add(new JSONMap().set("type", "global").set("name", "Global Scope").set("object", serializeObj(ctx, global)))
)
.setNull("this");
);
}
}
}
@ -156,6 +161,8 @@ public class SimpleDebugger implements Debugger {
public final WebSocket ws;
public final Engine target;
private ObjectValue emptyObject = new ObjectValue();
private HashMap<Integer, BreakpointCandidate> idToBptCand = new HashMap<>();
private HashMap<Integer, Breakpoint> idToBreakpoint = new HashMap<>();
@ -587,14 +594,22 @@ public class SimpleDebugger implements Debugger {
releaseGroup(group);
ws.send(msg.respond());
}
@Override
public void releaseObject(V8Message msg) {
var id = Integer.parseInt(msg.params.string("objectId"));
var obj = idToObject.remove(id);
if (obj != null) objectToId.remove(obj);
ws.send(msg.respond());
}
@Override public void getProperties(V8Message msg) {
var obj = idToObject.get(Integer.parseInt(msg.params.string("objectId")));
var own = msg.params.bool("ownProperties") || true;
var own = msg.params.bool("ownProperties");
var accessorPropertiesOnly = msg.params.bool("accessorPropertiesOnly", false);
var currOwn = true;
var res = new JSONList();
while (obj != null) {
while (obj != emptyObject && obj != null) {
var ctx = objectToCtx.get(obj);
for (var key : obj.keys(true)) {
@ -611,7 +626,7 @@ public class SimpleDebugger implements Debugger {
propDesc.set("isOwn", currOwn);
res.add(propDesc);
}
else {
else if (!accessorPropertiesOnly) {
propDesc.set("name", Values.toString(ctx, key));
propDesc.set("value", serializeObj(ctx, obj.getMember(ctx, key)));
propDesc.set("writable", obj.memberWritable(key));
@ -624,6 +639,7 @@ public class SimpleDebugger implements Debugger {
obj = obj.getPrototype(ctx);
if (currOwn) {
var protoDesc = new JSONMap();
protoDesc.set("name", "__proto__");
protoDesc.set("value", serializeObj(ctx, obj == null ? Values.NULL : obj));
@ -632,6 +648,7 @@ public class SimpleDebugger implements Debugger {
protoDesc.set("configurable", false);
protoDesc.set("isOwn", currOwn);
res.add(protoDesc);
}
currOwn = false;
if (own) break;
@ -641,10 +658,24 @@ public class SimpleDebugger implements Debugger {
}
@Override public void callFunctionOn(V8Message msg) {
var src = msg.params.string("functionDeclaration");
var args = msg.params.list("arguments", new JSONList()).stream().map(v -> v.map()).map(this::deserializeArgument).collect(Collectors.toList());
var args = msg.params
.list("arguments", new JSONList())
.stream()
.map(v -> v.map())
.map(this::deserializeArgument)
.collect(Collectors.toList());
var thisArg = idToObject.get(Integer.parseInt(msg.params.string("objectId")));
var ctx = objectToCtx.get(thisArg);
while (true) {
var start = src.lastIndexOf("//# sourceURL=");
if (start < 0) break;
var end = src.indexOf("\n", start);
if (end < 0) src = src.substring(0, start);
else src = src.substring(0, start) + src.substring(end + 1);
}
switch (src) {
case CHROME_GET_PROP_FUNC: {
var path = JSON.parse(new Filename("tmp", "json"), (String)args.get(0)).list();
@ -653,6 +684,24 @@ public class SimpleDebugger implements Debugger {
ws.send(msg.respond(new JSONMap().set("result", serializeObj(ctx, res))));
return;
}
case VSCODE_STRINGIFY_VAL:
case VSCODE_STRINGIFY_PROPS:
case VSCODE_SHALLOW_COPY:
ws.send(msg.respond(new JSONMap().set("result", serializeObj(ctx, emptyObject))));
break;
case VSCODE_FLATTEN_ARRAY: {
ws.send(msg.respond(new JSONMap().set("result", serializeObj(ctx, thisArg))));
break;
}
case VSCODE_SYMBOL_REQUEST:
ws.send(msg.respond(new JSONMap().set("result", serializeObj(ctx, new ArrayValue(ctx)))));
break;
case VSCODE_CALL: {
var func = (FunctionValue)(args.size() < 1 ? null : args.get(0));
try { ws.send(msg.respond(new JSONMap().set("result", serializeObj(ctx, func.call(ctx, thisArg))))); }
catch (EngineException e) { ws.send(msg.respond(new JSONMap().set("exceptionDetails", serializeException(ctx, e)))); }
break;
}
default:
ws.send(new V8Error("A non well-known function was used with callFunctionOn."));
break;
@ -728,11 +777,7 @@ public class SimpleDebugger implements Debugger {
break;
case STEPPING_OVER:
if (stepOutFrame.frame == frame.frame) {
if (returnVal != Runners.NO_RETURN) {
state = State.STEPPING_OUT;
return false;
}
else if (isBreakpointable && (
if (isBreakpointable && (
!loc.filename().equals(prevLocation.filename()) ||
loc.line() != prevLocation.line()
)) pauseDebug(ctx, null);
@ -754,10 +799,13 @@ public class SimpleDebugger implements Debugger {
if (StackData.frames(ctx).size() == 0) resume(State.RESUMED);
else if (stepOutFrame != null && stepOutFrame.frame == frame &&
(state == State.STEPPING_OUT || state == State.STEPPING_IN)
(state == State.STEPPING_OUT || state == State.STEPPING_IN || state == State.STEPPING_OVER)
) {
// if (state == State.STEPPING_OVER) state = State.STEPPING_IN;
// else {
pauseDebug(ctx, null);
updateNotifier.await();
// }
}
}

6
src/me/topchetoeu/jscript/engine/debug/WebSocket.java
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@ -109,6 +109,8 @@ public class WebSocket implements AutoCloseable {
else send(msg.textData());
}
public void send(Object data) {
// TODO: Remove
System.out.println("SEND: " + data);
if (closed) throw new IllegalStateException("Object is closed.");
write(1, data.toString().getBytes());
}
@ -190,6 +192,10 @@ public class WebSocket implements AutoCloseable {
if (!fin) continue;
var raw = data.toByteArray();
// TODO: Remove
System.out.println("RECEIVED: " + new String(raw));
if (type == 1) return new WebSocketMessage(new String(raw));
else return new WebSocketMessage(raw);
}

5
src/me/topchetoeu/jscript/json/JSON.java
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@ -83,8 +83,11 @@ public class JSON {
else return res.transform();
}
public static ParseRes<Double> parseNumber(Filename filename, List<Token> tokens, int i) {
var minus = Parsing.isOperator(tokens, i, Operator.SUBTRACT);
if (minus) i++;
var res = Parsing.parseNumber(filename, tokens, i);
if (res.isSuccess()) return ParseRes.res((Double)res.result.value, res.n);
if (res.isSuccess()) return ParseRes.res((minus ? -1 : 1) * (Double)res.result.value, res.n + (minus ? 1 : 0));
else return res.transform();
}
public static ParseRes<Boolean> parseBool(Filename filename, List<Token> tokens, int i) {