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192 lines (176 loc) · 6.29 KB
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// http://jupyter-client.readthedocs.io/en/latest/messaging.html#to-do
import * as vscode from 'vscode';
import * as child_process from 'child_process';
import * as path from 'path';
import {KernelspecMetadata, KernelEvents} from './contracts';
const jmp = require('jmp');
const uuid = require('uuid');
const zmq = jmp.zmq;
export abstract class Kernel extends vscode.Disposable implements KernelEvents {
private watchCallbacks: any[];
constructor(public kernelSpec: KernelspecMetadata, private language: string) {
super(() => { });
this.watchCallbacks = [];
}
public dispose() {
}
private _onStatusChange = new vscode.EventEmitter<[KernelspecMetadata, string]>();
get onStatusChange(): vscode.Event<[KernelspecMetadata, string]> {
return this._onStatusChange.event;
}
protected raiseOnStatusChange(status: string) {
this._onStatusChange.fire([this.kernelSpec, status]);
}
public addWatchCallback(watchCallback) {
return this.watchCallbacks.push(watchCallback);
};
public _callWatchCallbacks() {
return this.watchCallbacks.forEach(watchCallback => {
watchCallback();
});
};
public abstract interrupt();
public abstract shutdown();
public abstract execute(code: string, onResults);
public abstract executeWatch(code: string, onResults);
public abstract complete(code: string, onResults);
public abstract inspect(code: string, cursor_pos, onResults);
public _parseIOMessage(message) {
let result = this._parseDisplayIOMessage(message);
if (result == null) {
result = this._parseResultIOMessage(message);
}
if (result == null) {
result = this._parseErrorIOMessage(message);
}
if (result == null) {
result = this._parseStreamIOMessage(message);
}
return result;
};
public _parseDisplayIOMessage(message) {
if (message.header.msg_type === 'display_data') {
return this._parseDataMime(message.content.data);
}
return null;
};
public _parseResultIOMessage(message) {
const msg_type = message.header.msg_type;
if (msg_type === 'execute_result' || msg_type === 'pyout') {
return this._parseDataMime(message.content.data);
}
return null;
};
public _parseDataMime(data) {
if (data == null) {
return null;
}
const mime = this._getMimeType(data);
if (mime == null) {
return null;
}
let result;
if (mime === 'text/plain') {
result = {
data: {
'text/plain': data[mime]
},
type: 'text',
stream: 'pyout'
};
result.data['text/plain'] = result.data['text/plain'].trim();
} else {
result = {
data: {},
type: mime,
stream: 'pyout'
};
result.data[mime] = data[mime];
}
return result;
};
public _getMimeType(data) {
const imageMimes = Object.getOwnPropertyNames(data).filter(mime => {
return mime.startsWith('image/');
});
let mime;
if (data.hasOwnProperty('text/html')) {
mime = 'text/html';
} else if (data.hasOwnProperty('image/svg+xml')) {
mime = 'image/svg+xml';
} else if (!(imageMimes.length === 0)) {
mime = imageMimes[0];
} else if (data.hasOwnProperty('text/markdown')) {
mime = 'text/markdown';
} else if (data.hasOwnProperty('application/pdf')) {
mime = 'application/pdf';
} else if (data.hasOwnProperty('text/latex')) {
mime = 'text/latex';
} else if (data.hasOwnProperty('application/javascript')) {
mime = 'application/javascript';
} else if (data.hasOwnProperty('application/json')) {
mime = 'application/json';
} else if (data.hasOwnProperty('text/plain')) {
mime = 'text/plain';
}
return mime;
};
public _parseErrorIOMessage(message) {
const msg_type = message.header.msg_type;
if (msg_type === 'error' || msg_type === 'pyerr') {
return this._parseErrorMessage(message);
}
return null;
};
public _parseErrorMessage(message) {
let errorString: string;
const ename = message.content.ename != null ? message.content.ename : '';
const evalue = message.content.evalue != null ? message.content.evalue : '';
const errorMessage = ename + ': ' + evalue;
errorString = errorMessage;
try {
errorString = message.content.traceback.join('\n');
} catch (err) {
}
return {
data: {
'text/plain': errorString,
},
message: errorMessage,
type: 'text',
stream: 'error'
};
};
public _parseStreamIOMessage(message) {
let result;
if (message.header.msg_type === 'stream') {
result = {
data: {
'text/plain': message.content.text != null ? message.content.text : message.content.data
},
type: 'text',
stream: message.content.name
};
} else if (message.idents === 'stdout' || message.idents === 'stream.stdout' || message.content.name === 'stdout') {
result = {
data: {
'text/plain': message.content.text != null ? message.content.text : message.content.data
},
type: 'text',
stream: 'stdout'
};
} else if (message.idents === 'stderr' || message.idents === 'stream.stderr' || message.content.name === 'stderr') {
result = {
data: {
'text/plain': message.content.text != null ? message.content.text : message.content.data
},
type: 'text',
stream: 'stderr'
};
}
if ((result != null ? result.data['text/plain'] : void 0) != null) {
result.data['text/plain'] = result.data['text/plain'].trim();
}
return result;
};
}