Initial commit

This commit is contained in:
WebFreak001 2016-01-10 18:03:51 +01:00
commit 4440bfbe18
18 changed files with 1616 additions and 0 deletions

32
src/backend/backend.ts Normal file
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export interface Breakpoint {
file: string;
line: number;
}
export interface Stack {
level: number;
address: string;
function: string;
fileName: string;
file: string;
line: number;
}
export interface IBackend {
load(cwd: string, target: string): Thenable<any>;
start(): Thenable<boolean>;
stop();
interrupt(): Thenable<boolean>;
continue(): Thenable<boolean>;
next(): Thenable<boolean>;
step(): Thenable<boolean>;
stepOut(): Thenable<boolean>;
loadBreakPoints(breakpoints: Breakpoint[]): Thenable<[boolean, Breakpoint][]>;
addBreakPoint(breakpoint: Breakpoint): Thenable<[boolean, Breakpoint]>;
removeBreakPoint(breakpoint: Breakpoint): Thenable<boolean>;
clearBreakPoints(): Thenable<any>;
getStack(maxLevels: number): Thenable<Stack[]>;
getStackVariables(thread: number, frame: number): Thenable<[string, string][]>;
evalExpression(name: string): Thenable<any>;
isReady(): boolean;
}

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/*
{
quit = false,
_views = {
{
view = 0x7ffff7ece1e8,
renderer = 0x7ffff7eccc50,
world = 0x7ffff7ece480
}
},
deltaTimer = {
_flagStarted = false,
_timeStart = {length = 0},
_timeMeasured = {length = 0}
},
_start = {callbacks = 0x0},
_stop = {callbacks = 0x0}
}
*/
const resultRegex = /^([a-zA-Z_\-][a-zA-Z0-9_\-]*)\s*=\s*/;
const variableRegex = /^[a-zA-Z_\-][a-zA-Z0-9_\-]*/;
const errorRegex = /^\<.+?\>/;
const referenceRegex = /^0x[0-9a-fA-F]+/;
const numberRegex = /^[0-9]+/;
export function isExpandable(value: string): number {
let primitive: any;
let match;
value = value.trim();
if (value.length == 0) return 0;
else if (value[0] == '{') return 1; // object
else if (value.startsWith("true")) return 0;
else if (value.startsWith("false")) return 0;
else if (value.startsWith("0x0")) return 0;
else if (match = referenceRegex.exec(value)) return 2; // reference
else if (match = numberRegex.exec(value)) return 0;
else if (match = variableRegex.exec(value)) return 0;
else if (match = errorRegex.exec(value)) return 0;
else return 0;
}
export function expandValue(variableCreate: Function, value: string): any {
let parseCString = () => {
value = value.trim();
if (value[0] != '"')
return "";
let stringEnd = 1;
let inString = true;
let remaining = value.substr(1);
let escaped = false;
while (inString) {
if (escaped)
escaped = false;
else if (remaining[0] == '\\')
escaped = true;
else if (remaining[0] == '"')
inString = false;
remaining = remaining.substr(1);
stringEnd++;
}
let str = value.substr(0, stringEnd).trim();
value = value.substr(stringEnd).trim();
return str;
};
let parseValue, parseCommaResult, parseCommaValue, parseResult;
let parseTupleOrList = () => {
value = value.trim();
if (value[0] != '{')
return undefined;
let oldContent = value;
value = value.substr(1).trim();
if (value[0] == '}')
return [];
let eqPos = value.indexOf("=");
let newValPos1 = value.indexOf("{");
let newValPos2 = value.indexOf(",");
let newValPos = newValPos1;
if (newValPos2 != -1 && newValPos2 < newValPos1)
newValPos = newValPos2;
if (newValPos != -1 && eqPos > newValPos || eqPos == -1) { // is value list
let values = [];
let val = parseValue();
values.push(val);
let remaining = value;
while (val = parseCommaValue())
values.push(val);
value = value.substr(1).trim(); // }
return values;
}
let result = parseResult();
if (result) {
let results = [];
results.push(result);
while (result = parseCommaResult())
results.push(result);
value = value.substr(1).trim(); // }
return results;
}
return undefined;
};
let parsePrimitive = () => {
let primitive: any;
let match;
value = value.trim();
if (value.length == 0)
primitive = undefined;
else if (value.startsWith("true")) {
primitive = "true";
value = value.substr(4).trim();
}
else if (value.startsWith("false")) {
primitive = "false";
value = value.substr(5).trim();
}
else if (value.startsWith("0x0")) {
primitive = "<nullptr>";
value = value.substr(3).trim();
}
else if (match = referenceRegex.exec(value)) {
primitive = "*" + match[0];
value = value.substr(match[0].length).trim();
}
else if (match = numberRegex.exec(value)) {
primitive = match[0];
value = value.substr(match[0].length).trim();
}
else if (match = variableRegex.exec(value)) {
primitive = match[0];
value = value.substr(match[0].length).trim();
}
else if (match = errorRegex.exec(value)) {
primitive = match[0];
value = value.substr(match[0].length).trim();
}
else {
primitive = "<???>";
}
return primitive;
};
parseValue = () => {
value = value.trim();
if (value[0] == '"')
return parseCString();
else if (value[0] == '{')
return parseTupleOrList();
else
return parsePrimitive();
};
parseResult = () => {
value = value.trim();
let variableMatch = resultRegex.exec(value);
if (!variableMatch)
return undefined;
value = value.substr(variableMatch[0].length).trim();
let variable = variableMatch[1];
let val = parseValue();
let ref = 0;
if (typeof val == "object") {
ref = variableCreate(val);
val = "Object";
}
if (typeof val == "string" && val.startsWith("*0x")) {
ref = variableCreate("*" + variable);
val = "Object@" + val;
}
return {
name: variable,
value: val,
variablesReference: ref
};
};
parseCommaValue = () => {
value = value.trim();
if (value[0] != ',')
return undefined;
value = value.substr(1).trim();
return parseValue();
};
parseCommaResult = () => {
value = value.trim();
if (value[0] != ',')
return undefined;
value = value.substr(1).trim();
return parseResult();
};
value = value.trim();
return parseValue();
}

278
src/backend/mi2/mi2.ts Normal file
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import { Breakpoint, IBackend, Stack } from "../backend.ts"
import * as ChildProcess from "child_process"
import { EventEmitter } from "events"
import { parseMI, MINode } from '../mi_parse';
export class MI2 extends EventEmitter implements IBackend {
constructor(public application: string, public preargs: string[]) {
super();
}
load(cwd: string, target: string): Thenable<any> {
return new Promise((resolve, reject) => {
this.process = ChildProcess.spawn(this.application, this.preargs.concat([target]), { cwd: cwd });
this.process.stdout.on("data", this.stdout.bind(this));
this.process.on("exit", (() => { this.emit("quit"); }).bind(this));
Promise.all([
this.sendCommand("environment-directory \"" + cwd + "\"")
]).then(resolve, reject);
});
}
stdout(data) {
this.buffer += data.toString("utf8");
let end = this.buffer.lastIndexOf('\n');
if (end != -1) {
this.onOutput(this.buffer.substr(0, end));
this.buffer = this.buffer.substr(end + 1);
}
}
onOutput(lines) {
lines = <string[]>lines.split('\n');
lines.forEach(line => {
let parsed = parseMI(line);
//this.log("log", JSON.stringify(parsed));
let handled = false;
if (parsed.token !== undefined) {
if (this.handlers[parsed.token]) {
this.handlers[parsed.token](parsed);
delete this.handlers[parsed.token];
handled = true;
}
}
if (parsed.resultRecords && parsed.resultRecords.resultClass == "error") {
this.log("log", "An error occured: " + parsed.result("msg"));
}
if (parsed.outOfBandRecord) {
parsed.outOfBandRecord.forEach(record => {
if (record.isStream) {
this.log(record.type, record.content);
} else {
if (record.type == "exec") {
this.emit("exec-async-output", parsed);
if (record.asyncClass == "running")
this.emit("running", parsed);
else if (record.asyncClass == "stopped") {
if (parsed.record("reason") == "breakpoint-hit")
this.emit("breakpoint", parsed);
else if (parsed.record("reason") == "end-stepping-range")
this.emit("step-end", parsed);
else if (parsed.record("reason") == "function-finished")
this.emit("step-out-end", parsed);
else
this.emit("stopped", parsed);
} else
this.log("log", JSON.stringify(parsed));
}
}
});
handled = true;
}
if (parsed.token == undefined && parsed.resultRecords == undefined && parsed.outOfBandRecord.length == 0)
handled = true;
if (!handled)
this.log("log", "Unhandled: " + JSON.stringify(parsed));
});
}
start(): Thenable<boolean> {
return new Promise((resolve, reject) => {
this.log("console", "Running executable");
this.sendCommand("exec-run").then((info) => {
resolve(info.resultRecords.resultClass == "running");
}, reject);
});
}
stop() {
let proc = this.process;
let to = setTimeout(() => {
proc.kill();
}, 2222);
this.process.on("exit", function(code) {
clearTimeout(to);
});
this.sendRaw("-gdb-exit");
}
interrupt(): Thenable<boolean> {
return new Promise((resolve, reject) => {
this.sendCommand("exec-interrupt").then((info) => {
resolve(info.resultRecords.resultClass == "done");
}, reject);
});
}
continue(): Thenable<boolean> {
return new Promise((resolve, reject) => {
this.sendCommand("exec-continue").then((info) => {
resolve(info.resultRecords.resultClass == "running");
}, reject);
});
}
next(): Thenable<boolean> {
return new Promise((resolve, reject) => {
this.sendCommand("exec-next").then((info) => {
resolve(info.resultRecords.resultClass == "running");
}, reject);
});
}
step(): Thenable<boolean> {
return new Promise((resolve, reject) => {
this.sendCommand("exec-step").then((info) => {
resolve(info.resultRecords.resultClass == "running");
}, reject);
});
}
stepOut(): Thenable<boolean> {
return new Promise((resolve, reject) => {
this.sendCommand("exec-finish").then((info) => {
resolve(info.resultRecords.resultClass == "running");
}, reject);
});
}
loadBreakPoints(breakpoints: Breakpoint[]): Thenable<[boolean, Breakpoint][]> {
let promisses = [];
breakpoints.forEach(breakpoint => {
promisses.push(this.addBreakPoint(breakpoint));
});
return Promise.all(promisses);
}
addBreakPoint(breakpoint: Breakpoint): Thenable<[boolean, Breakpoint]> {
return new Promise((resolve, reject) => {
if (this.breakpoints.has(breakpoint))
return resolve(false);
this.sendCommand("break-insert " + breakpoint.file + ":" + breakpoint.line).then((result) => {
if (result.resultRecords.resultClass == "done") {
let newBrk = {
file: result.result("bkpt.file"),
line: parseInt(result.result("bkpt.line"))
};
this.breakpoints.set(newBrk, parseInt(result.result("bkpt.number")));
resolve([true, newBrk]);
}
else {
resolve([false, null]);
}
});
});
}
removeBreakPoint(breakpoint: Breakpoint): Thenable<boolean> {
return new Promise((resolve, reject) => {
if (!this.breakpoints.has(breakpoint))
return resolve(false);
this.sendCommand("break-delete " + this.breakpoints.get(breakpoint)).then((result) => {
if (result.resultRecords.resultClass == "done") {
this.breakpoints.delete(breakpoint);
resolve(true);
}
else resolve(false);
});
});
}
clearBreakPoints(): Thenable<any> {
let promisses = [];
let it = this.breakpoints.keys();
let value;
while (!(value = it.next()).done) {
promisses.push(this.removeBreakPoint(value.value));
}
return Promise.all(promisses);
}
getStack(maxLevels: number): Thenable<Stack[]> {
return new Promise((resolve, reject) => {
let command = "stack-list-frames";
if (maxLevels) {
command += " 0 " + maxLevels;
}
this.sendCommand(command).then((result) => {
let stack = result.result("stack");
let ret: Stack[] = [];
stack.forEach(element => {
let level = MINode.valueOf(element, "@frame.level");
let addr = MINode.valueOf(element, "@frame.addr");
let func = MINode.valueOf(element, "@frame.func");
let filename = MINode.valueOf(element, "@frame.file");
let file = MINode.valueOf(element, "@frame.fullname");
let line = parseInt(MINode.valueOf(element, "@frame.line"));
let from = parseInt(MINode.valueOf(element, "@frame.from"));
ret.push({
address: addr,
fileName: filename || "",
file: file || from || "<unknown>",
function: func,
level: level,
line: line
});
});
resolve(ret);
});
});
}
getStackVariables(thread: number, frame: number): Thenable<[string, string][]> {
return new Promise((resolve, reject) => {
this.sendCommand("stack-list-variables --thread " + thread + " --frame " + frame + " --simple-values").then((result) => {
let variables = result.result("variables");
let ret: [string, string][] = [];
variables.forEach(element => {
const key = MINode.valueOf(element, "name");
const value = MINode.valueOf(element, "value");
ret.push([key, value]);
});
resolve(ret);
}, reject);
});
}
evalExpression(name: string): Thenable<any> {
return new Promise((resolve, reject) => {
this.sendCommand("data-evaluate-expression " + name).then((result) => {
resolve(result);
}, reject);
});
}
log(type: string, msg: string) {
this.emit("msg", type, msg[msg.length - 1] == '\n' ? msg : (msg + "\n"));
}
sendRaw(raw: string) {
this.process.stdin.write(raw + "\n");
}
sendCommand(command: string): Thenable<MINode> {
return new Promise((resolve, reject) => {
this.handlers[this.currentToken] = (node: MINode) => {
if (node.resultRecords && node.resultRecords.resultClass == "error") {
let msg = node.result("msg") || "Internal error";
this.log("stderr", "Failed to run command `" + command + "`: " + msg);
reject(msg);
}
else
resolve(node);
};
this.process.stdin.write(this.currentToken + "-" + command + "\n");
this.currentToken++;
});
}
isReady(): boolean {
return !!this.process;
}
private currentToken: number = 1;
private handlers: { [index: number]: (info: MINode) => any } = {};
private breakpoints: Map<Breakpoint, Number> = new Map();
private buffer: string;
private process: ChildProcess.ChildProcess;
}

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src/backend/mi_parse.ts Normal file
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export interface MIInfo {
token: number;
outOfBandRecord: { isStream: boolean, type: string, asyncClass: string, output: [string, any][], content: string }[];
resultRecords: { resultClass: string, results: [string, any][] };
}
export class MINode implements MIInfo {
token: number;
outOfBandRecord: { isStream: boolean, type: string, asyncClass: string, output: [string, any][], content: string }[];
resultRecords: { resultClass: string, results: [string, any][] };
constructor(token: number, info: { isStream: boolean, type: string, asyncClass: string, output: [string, any][], content: string }[], result: { resultClass: string, results: [string, any][] }) {
this.token = token;
this.outOfBandRecord = info;
this.resultRecords = result;
}
record(path: string): any {
if (!this.outOfBandRecord)
return undefined;
return MINode.valueOf(this.outOfBandRecord[0].output, path);
}
result(path: string): any {
if (!this.resultRecords)
return undefined;
return MINode.valueOf(this.resultRecords.results, path);
}
static valueOf(start: any, path: string): any {
if (!start)
return undefined;
let pathRegex = /^\.?([a-zA-Z_\-][a-zA-Z0-9_\-]*)/;
let indexRegex = /^\[(\d+)\](?:$|\.)/;
path = path.trim();
if (!path)
return start;
let current = start;
do {
let target = pathRegex.exec(path);
if (target) {
path = path.substr(target[0].length);
if (current.length && typeof current != "string") {
let found = [];
for (let i = 0; i < current.length; i++) {
let element = current[i];
if (element[0] == target[1]) {
found.push(element[1]);
}
}
if (found.length > 1) {
current = found;
} else if (found.length == 1) {
current = found[0];
} else return undefined;
} else return undefined;
}
else if (path[0] == '@') {
current = [current];
path = path.substr(1);
}
else {
target = indexRegex.exec(path);
if (target) {
path = path.substr(target[0].length);
let i = parseInt(target[1]);
if (current.length && typeof current != "string" && i >= 0 && i < current.length) {
current = current[i];
} else if (i == 0) {
} else return undefined;
}
else return undefined;
}
path = path.trim();
} while (path);
return current;
}
}
const tokenRegex = /^[0-9]+/;
const outOfBandRecordRegex = /^(?:([0-9]*)([\*\+\=])|([\~\@\&]))/;
const resultRecordRegex = /^([0-9]*)\^(done|running|connected|error|exit)/;
const newlineRegex = /^\r\n?/;
const endRegex = /^\(gdb\)\r\n?/;
const variableRegex = /^([a-zA-Z_\-][a-zA-Z0-9_\-]*)/;
const asyncClassRegex = /^(.*?),/;
export function parseMI(output: string): MINode {
/*
output ==>
(
exec-async-output = [ token ] "*" ("stopped" | others) ( "," variable "=" (const | tuple | list) )* \n
status-async-output = [ token ] "+" ("stopped" | others) ( "," variable "=" (const | tuple | list) )* \n
notify-async-output = [ token ] "=" ("stopped" | others) ( "," variable "=" (const | tuple | list) )* \n
console-stream-output = "~" c-string \n
target-stream-output = "@" c-string \n
log-stream-output = "&" c-string \n
)*
[
[ token ] "^" ("done" | "running" | "connected" | "error" | "exit") ( "," variable "=" (const | tuple | list) )* \n
]
"(gdb)" \n
*/
let token = undefined;
let outOfBandRecord = [];
let resultRecords = undefined;
let asyncRecordType = {
"*": "exec",
"+": "status",
"=": "notify"
};
let streamRecordType = {
"~": "console",
"@": "target",
"&": "log"
};
let parseCString = () => {
if (output[0] != '"')
return "";
let stringEnd = 1;
let inString = true;
let remaining = output.substr(1);
let escaped = false;
while (inString) {
if (escaped)
escaped = false;
else if (remaining[0] == '\\')
escaped = true;
else if (remaining[0] == '"')
inString = false;
remaining = remaining.substr(1);
stringEnd++;
}
// hax
let str = JSON.parse(output.substr(0, stringEnd));
output = output.substr(stringEnd);
return str;
};
let parseValue, parseCommaResult, parseCommaValue, parseResult;
let parseTupleOrList = () => {
if (output[0] != '{' && output[0] != '[')
return undefined;
let oldContent = output;
let canBeValueList = output[0] == '[';
output = output.substr(1);
if (output[0] == '}' || output[0] == ']')
return [];
if (canBeValueList) {
let value = parseValue();
if (value) { // is value list
let values = [];
values.push(value);
let remaining = output;
while (value = parseCommaValue())
values.push(value);
output = output.substr(1); // ]
return values;
}
}
let result = parseResult();
if (result) {
let results = [];
results.push(result);
while (result = parseCommaResult())
results.push(result);
output = output.substr(1); // }
return results;
}
output = (canBeValueList ? '[' : '{') + output;
return undefined;
};
parseValue = () => {
if (output[0] == '"')
return parseCString();
else if (output[0] == '{' || output[0] == '[')
return parseTupleOrList();
else
return undefined;
};
parseResult = () => {
let variableMatch = variableRegex.exec(output);
if (!variableMatch)
return undefined;
output = output.substr(variableMatch[0].length + 1);
let variable = variableMatch[1];
return [variable, parseValue()];
};
parseCommaValue = () => {
if (output[0] != ',')
return undefined;
output = output.substr(1);
return parseValue();
};
parseCommaResult = () => {
if (output[0] != ',')
return undefined;
output = output.substr(1);
return parseResult();
};
let match = undefined;
while (match = outOfBandRecordRegex.exec(output)) {
output = output.substr(match[0].length);
if (match[1] && token === undefined) {
token = parseInt(match[1]);
}
if (match[2]) {
let classMatch = asyncClassRegex.exec(output);
output = output.substr(classMatch[1].length);
let asyncRecord = {
isStream: false,
type: asyncRecordType[match[2]],
asyncClass: classMatch[1],
output: []
};
let result;
while (result = parseCommaResult())
asyncRecord.output.push(result);
outOfBandRecord.push(asyncRecord);
}
else if (match[3]) {
let streamRecord = {
isStream: true,
type: streamRecordType[match[3]],
content: parseCString()
};
outOfBandRecord.push(streamRecord);
}
output = output.replace(newlineRegex, "");
}
if (match = resultRecordRegex.exec(output)) {
output = output.substr(match[0].length);
if (match[1] && token === undefined) {
token = parseInt(match[1]);
}
resultRecords = {
resultClass: match[2],
results: []
};
let result;
while (result = parseCommaResult())
resultRecords.results.push(result);
output = output.replace(newlineRegex, "");
}
return new MINode(token, outOfBandRecord || [], resultRecords);
}