pythonVSCode/src/client/debugger/PythonProcess.ts at master · rmagee/pythonVSCode · GitHub

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"use strict";

import * as net from "net";

import {EventEmitter} from "events";

import {FrameKind, IPythonProcess, IPythonThread, IPythonModule, IPythonEvaluationResult, IPythonStackFrame, IStepCommand} from "./Common/Contracts";

import {IPythonBreakpoint, PythonBreakpointConditionKind, PythonBreakpointPassCountKind, IBreakpointCommand, IChildEnumCommand} from "./Common/Contracts";

import {PythonEvaluationResultReprKind, IExecutionCommand, enum_EXCEPTION_STATE} from "./Common/Contracts";

import {Commands} from "./ProxyCommands";

import {IdDispenser} from "../common/idDispenser";

import {PythonProcessCallbackHandler} from "./PythonProcessCallbackHandler";

import {SocketStream} from "../common/comms/SocketStream";

export class PythonProcess extends EventEmitter implements IPythonProcess {

private id: number;

public get Id(): number {

return this.id;

}

private guid: string;

public get Guid(): string {

return this.guid;

}

private hasExited: boolean;

public get HasExited(): boolean {

return this.hasExited;

}

private _mainThread: IPythonThread;

public get MainThread(): IPythonThread {

return this._mainThread;

}

private _lastExecutedThread: IPythonThread;

public get LastExecutedThread(): IPythonThread {

return this._lastExecutedThread;

}

private _idDispenser: IdDispenser;

private _threads: Map<number, IPythonThread>;

public get Threads(): Map<number, IPythonThread> {

return this._threads;

}

public PendingChildEnumCommands: Map<number, IChildEnumCommand>;

public PendingExecuteCommands: Map<number, IExecutionCommand>;

private executeCommandsQueue: IExecutionCommand[];

private callbackHandler: PythonProcessCallbackHandler;

private stream: SocketStream = null;

private programDirectory: string;

public get ProgramDirectory(): string {

return this.programDirectory;

}

constructor(id: number, guid: string, programDirectory: string) {

super();

this.id = id;

this.guid = guid;

this._threads = new Map<number, IPythonThread>();

this._idDispenser = new IdDispenser();

this.PendingChildEnumCommands = new Map<number, IChildEnumCommand>();

this.PendingExecuteCommands = new Map<number, IExecutionCommand>();

this.programDirectory = programDirectory;

this.executeCommandsQueue = [];

}

public Kill() {

if (!this.isRemoteProcess && this.pid && typeof this.pid === "number") {

try {

let kill = require("tree-kill");

kill(this.pid);

this.pid = null;

}

catch (ex) { }

}

public Terminate() {

this.stream.Write(Commands.ExitCommandBytes);

}

public Detach() {

this.stream.Write(Commands.DetachCommandBytes);

}

private guidRead: boolean;

private statusRead: boolean;

private pidRead: boolean;

private pid: number;

private isRemoteProcess: Boolean;

public Connect(buffer: Buffer, socket: net.Socket, isRemoteProcess: boolean = false): boolean {

this.isRemoteProcess = isRemoteProcess;

if (this.stream === null) {

this.stream = new SocketStream(socket, buffer);

}

else {

this.stream.Append(buffer);

}

if (!isRemoteProcess) {

if (!this.guidRead) {

this.stream.BeginTransaction();

let guid = this.stream.ReadString();

if (this.stream.HasInsufficientDataForReading) {

this.stream.RollBackTransaction();

return false;

}

this.guidRead = true;

this.stream.EndTransaction();

}

if (!this.statusRead) {

this.stream.BeginTransaction();

let result = this.stream.ReadInt32();

if (this.stream.HasInsufficientDataForReading) {

this.stream.RollBackTransaction();

return false;

}

this.statusRead = true;

this.stream.EndTransaction();

}

if (!this.pidRead) {

this.stream.BeginTransaction();

this.pid = this.stream.ReadInt32();

if (this.stream.HasInsufficientDataForReading) {

this.stream.RollBackTransaction();

return false;

}

this.pidRead = true;

this.stream.EndTransaction();

}

this.callbackHandler = new PythonProcessCallbackHandler(this, this.stream, this._idDispenser);

this.callbackHandler.on("detach", () => this.emit("detach"));

this.callbackHandler.on("last", () => this.emit("last"));

this.callbackHandler.on("moduleLoaded", arg => this.emit("moduleLoaded", arg));

this.callbackHandler.on("asyncBreakCompleted", arg => this.emit("asyncBreakCompleted", arg));

this.callbackHandler.on("threadCreated", arg => this.emit("threadCreated", arg));

this.callbackHandler.on("threadExited", arg => this.emit("threadExited", arg));

this.callbackHandler.on("stepCompleted", arg => this.onPythonStepCompleted(arg));

this.callbackHandler.on("breakpointSet", arg => this.onBreakpointSet(arg, true));

this.callbackHandler.on("breakpointNotSet", arg => this.onBreakpointSet(arg, false));

this.callbackHandler.on("output", (pyThread, output) => this.emit("output", pyThread, output));

this.callbackHandler.on("exceptionRaised", (pyThread, ex, brkType) => {

this._lastExecutedThread = pyThread;

this.emit("exceptionRaised", pyThread, ex, brkType);

});

this.callbackHandler.on("breakpointHit", (pyThread, breakpointId) => this.onBreakpointHit(pyThread, breakpointId));

this.callbackHandler.on("processLoaded", arg => {

this._mainThread = <IPythonThread>arg;

this._lastExecutedThread = this._mainThread;

this.emit("processLoaded", arg);

});

this.callbackHandler.HandleIncomingData();

return true;

}

public HandleIncomingData(buffer: Buffer) {

this.stream.Append(buffer);

if (!this.isRemoteProcess) {

if (!this.guidRead) {

this.stream.RollBackTransaction();

let guid = this.stream.ReadString();

if (this.stream.HasInsufficientDataForReading) {

return;

}

this.guidRead = true;

this.stream.EndTransaction();

}

if (!this.statusRead) {

this.stream.BeginTransaction();

let result = this.stream.ReadInt32();

if (this.stream.HasInsufficientDataForReading) {

this.stream.RollBackTransaction();

return;

}

this.statusRead = true;

this.stream.EndTransaction();

}

if (!this.pidRead) {

this.stream.BeginTransaction();

this.pid = this.stream.ReadInt32();

if (this.stream.HasInsufficientDataForReading) {

this.stream.RollBackTransaction();

return;

}

this.pidRead = true;

this.stream.EndTransaction();

}

this.callbackHandler.HandleIncomingData();

}

// #region Step Commands

private onPythonStepCompleted(pyThread: IPythonThread) {

this._lastExecutedThread = pyThread;

this.emit("stepCompleted", pyThread);

}

private sendStepCommand(threadId: number, command: Buffer) {

this.stream.Write(command);

this.stream.WriteInt64(threadId);

}

public SendExceptionInfo(defaultBreakOnMode: enum_EXCEPTION_STATE, breakOn: Map<string, enum_EXCEPTION_STATE>) {

this.stream.Write(Commands.SetExceptionInfoCommandBytes);

this.stream.WriteInt32(defaultBreakOnMode);

if (breakOn === null || breakOn === undefined) {

this.stream.WriteInt32(0);

}

else {

this.stream.WriteInt32(breakOn.size);

breakOn.forEach((value, key) => {

this.stream.WriteInt32(value);

this.stream.WriteString(key);

});

}

public SendStepOver(threadId: number) {

return this.sendStepCommand(threadId, Commands.StepOverCommandBytes);

}

public SendStepOut(threadId: number) {

return this.sendStepCommand(threadId, Commands.StepOutCommandBytes);

}

public SendStepInto(threadId: number) {

return this.sendStepCommand(threadId, Commands.StepIntoCommandBytes);

}

// #endregion

private onBreakpointHit(pyThread: IPythonThread, breakpointId: number) {

this._lastExecutedThread = pyThread;

this.emit("breakpointHit", pyThread, breakpointId);

}

private onBreakpointSet(breakpointId: number, success: boolean) {

// Find the last breakpoint command associated with this breakpoint

let index = this.breakpointCommands.findIndex(cmd => cmd.Id === breakpointId);

if (index === -1) {

// Hmm this is not possible, log this exception and carry on

this.emit("error", "command.breakpoint.hit", `Uknown Breakpoit Id ${breakpointId}`);

return;

}

let cmd = this.breakpointCommands.splice(index, 1)[0];

if (success) {

cmd.PromiseResolve();

}

else {

cmd.PromiseReject();

}

private breakpointCommands: IBreakpointCommand[] = [];

public DisableBreakPoint(breakpoint: IPythonBreakpoint) {

if (breakpoint.IsDjangoBreakpoint) {

this.stream.Write(Commands.RemoveDjangoBreakPointCommandBytes);

} else {

this.stream.Write(Commands.RemoveBreakPointCommandBytes);

}

this.stream.WriteInt32(breakpoint.LineNo);

this.stream.WriteInt32(breakpoint.Id);

if (breakpoint.IsDjangoBreakpoint) {

this.stream.WriteString(breakpoint.Filename);

}

public BindBreakpoint(brkpoint: IPythonBreakpoint): Promise<any> {

return new Promise<IPythonThread>((resolve, reject) => {

let bkCmd: IBreakpointCommand = {

Id: brkpoint.Id,

PromiseResolve: resolve,

PromiseReject: reject

};

this.breakpointCommands.push(bkCmd);

if (brkpoint.IsDjangoBreakpoint) {

this.stream.Write(Commands.AddDjangoBreakPointCommandBytes);

}

else {

this.stream.Write(Commands.SetBreakPointCommandBytes);

}

this.stream.WriteInt32(brkpoint.Id);

this.stream.WriteInt32(brkpoint.LineNo);

this.stream.WriteString(brkpoint.Filename);

if (brkpoint.IsDjangoBreakpoint) {

// Bining django breakpoints don't return any responses

// Assume it worked

resolve();

}

else {

this.SendCondition(brkpoint);

this.SendPassCount(brkpoint);

}

});

}

private SendCondition(breakpoint: IPythonBreakpoint) {

this.stream.WriteInt32(<number>breakpoint.ConditionKind);

this.stream.WriteString(breakpoint.Condition || "");

}

private SendPassCount(breakpoint: IPythonBreakpoint) {

// DebugWriteCommand("Send BP pass count");

this.stream.WriteInt32(<number>breakpoint.PassCountKind);

this.stream.WriteInt32(breakpoint.PassCount);

}

public SendResumeThread(threadId: number) {

return this.sendStepCommand(threadId, Commands.ResumeThreadCommandBytes);

}

public SendContinue(): Promise<IPythonThread> {

return new Promise<IPythonThread>(resolve => {

this.stream.Write(Commands.ResumeAllCommandBytes);

resolve();

});

}

public AutoResumeThread(threadId: number) {

}

public SendClearStepping(threadId: number) {

}

public Break() {

this.stream.Write(Commands.BreakAllCommandBytes);

}

public ExecuteText(text: string, reprKind: PythonEvaluationResultReprKind, stackFrame: IPythonStackFrame): Promise<IPythonEvaluationResult> {

return new Promise<IPythonEvaluationResult>((resolve, reject) => {

let executeId = this._idDispenser.Allocate();

let cmd: IExecutionCommand = {

Id: executeId,

Text: text,

Frame: stackFrame,

PromiseResolve: resolve,

PromiseReject: reject,

ReprKind: reprKind

};

this.executeCommandsQueue.push(cmd);

this.ProcessPendingExecuteCommands();

});

}

public ProcessPendingExecuteCommands() {

if (this.executeCommandsQueue.length === 0 || this.PendingExecuteCommands.size > 0) {

return;

}

const cmd = this.executeCommandsQueue.shift();

this.PendingExecuteCommands.set(cmd.Id, cmd);

this.stream.Write(Commands.ExecuteTextCommandBytes);

this.stream.WriteString(cmd.Text);

this.stream.WriteInt64(cmd.Frame.Thread.Id);

this.stream.WriteInt32(cmd.Frame.FrameId);

this.stream.WriteInt32(cmd.Id);

this.stream.WriteInt32(<number>cmd.Frame.Kind);

this.stream.WriteInt32(<number>cmd.ReprKind);

}

public EnumChildren(text: string, stackFrame: IPythonStackFrame, timeout: number): Promise<IPythonEvaluationResult[]> {

return new Promise<IPythonEvaluationResult[]>((resolve, reject) => {

let executeId = this._idDispenser.Allocate();

if (typeof (executeId) !== "number") {

let y = "";

}

let cmd: IChildEnumCommand = {

Id: executeId,

Frame: stackFrame,

PromiseResolve: resolve,

PromiseReject: reject

};

this.PendingChildEnumCommands.set(executeId, cmd);

setTimeout(() => {

if (this.PendingChildEnumCommands.has(executeId)) {

this.PendingChildEnumCommands.delete(executeId);

}

let seconds = timeout / 1000;

reject(`Enumerating children for ${text} timed out after ${seconds} seconds.`);

}, timeout);

this.stream.Write(Commands.GetChildrenCommandBytes);

this.stream.WriteString(text);

this.stream.WriteInt64(stackFrame.Thread.Id);

this.stream.WriteInt32(stackFrame.FrameId);

this.stream.WriteInt32(executeId);

this.stream.WriteInt32(stackFrame.Kind);

});

}

public SetLineNumber(pythonStackFrame: IPythonStackFrame, lineNo: number) {

}

pythonVSCode/src/client/debugger/PythonProcess.ts at master · rmagee/pythonVSCode · GitHub

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