aboutsummaryrefslogtreecommitdiff
path: root/editors/code/src/debug.ts
blob: 830980f968c5bb92f69ee41cc13151db9721ae3e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
import * as os from "os";
import * as vscode from 'vscode';
import * as path from 'path';
import * as ra from './lsp_ext';

import { Cargo, getRustcId, getSysroot } from './toolchain';
import { Ctx } from "./ctx";
import { prepareEnv } from "./run";

const debugOutput = vscode.window.createOutputChannel("Debug");
type DebugConfigProvider = (config: ra.Runnable, executable: string, env: Record<string, string>, sourceFileMap?: Record<string, string>) => vscode.DebugConfiguration;

export async function makeDebugConfig(ctx: Ctx, runnable: ra.Runnable): Promise<void> {
    const scope = ctx.activeRustEditor?.document.uri;
    if (!scope) return;

    const debugConfig = await getDebugConfiguration(ctx, runnable);
    if (!debugConfig) return;

    const wsLaunchSection = vscode.workspace.getConfiguration("launch", scope);
    const configurations = wsLaunchSection.get<any[]>("configurations") || [];

    const index = configurations.findIndex(c => c.name === debugConfig.name);
    if (index !== -1) {
        const answer = await vscode.window.showErrorMessage(`Launch configuration '${debugConfig.name}' already exists!`, 'Cancel', 'Update');
        if (answer === "Cancel") return;

        configurations[index] = debugConfig;
    } else {
        configurations.push(debugConfig);
    }

    await wsLaunchSection.update("configurations", configurations);
}

export async function startDebugSession(ctx: Ctx, runnable: ra.Runnable): Promise<boolean> {
    let debugConfig: vscode.DebugConfiguration | undefined = undefined;
    let message = "";

    const wsLaunchSection = vscode.workspace.getConfiguration("launch");
    const configurations = wsLaunchSection.get<any[]>("configurations") || [];

    const index = configurations.findIndex(c => c.name === runnable.label);
    if (-1 !== index) {
        debugConfig = configurations[index];
        message = " (from launch.json)";
        debugOutput.clear();
    } else {
        debugConfig = await getDebugConfiguration(ctx, runnable);
    }

    if (!debugConfig) return false;

    debugOutput.appendLine(`Launching debug configuration${message}:`);
    debugOutput.appendLine(JSON.stringify(debugConfig, null, 2));
    return vscode.debug.startDebugging(undefined, debugConfig);
}

async function getDebugConfiguration(ctx: Ctx, runnable: ra.Runnable): Promise<vscode.DebugConfiguration | undefined> {
    const editor = ctx.activeRustEditor;
    if (!editor) return;

    const knownEngines: Record<string, DebugConfigProvider> = {
        "vadimcn.vscode-lldb": getLldbDebugConfig,
        "ms-vscode.cpptools": getCppvsDebugConfig
    };
    const debugOptions = ctx.config.debug;

    let debugEngine = null;
    if (debugOptions.engine === "auto") {
        for (var engineId in knownEngines) {
            debugEngine = vscode.extensions.getExtension(engineId);
            if (debugEngine) break;
        }
    } else {
        debugEngine = vscode.extensions.getExtension(debugOptions.engine);
    }

    if (!debugEngine) {
        await vscode.window.showErrorMessage(`Install [CodeLLDB](https://marketplace.visualstudio.com/items?itemName=vadimcn.vscode-lldb)`
            + ` or [MS C++ tools](https://marketplace.visualstudio.com/items?itemName=ms-vscode.cpptools) extension for debugging.`);
        return;
    }

    debugOutput.clear();
    if (ctx.config.debug.openDebugPane) {
        debugOutput.show(true);
    }
    // folder exists or RA is not active.
    // eslint-disable-next-line @typescript-eslint/no-unnecessary-type-assertion
    const workspaceFolders = vscode.workspace.workspaceFolders!;
    const isMultiFolderWorkspace = workspaceFolders.length > 1;
    const firstWorkspace = workspaceFolders[0];
    const workspace = !isMultiFolderWorkspace || !runnable.args.workspaceRoot ?
        firstWorkspace :
        workspaceFolders.find(w => runnable.args.workspaceRoot?.includes(w.uri.fsPath)) || firstWorkspace;

    const wsFolder = path.normalize(workspace.uri.fsPath);
    const workspaceQualifier = isMultiFolderWorkspace ? `:${workspace.name}` : '';
    function simplifyPath(p: string): string {
        // see https://github.com/rust-analyzer/rust-analyzer/pull/5513#issuecomment-663458818 for why this is needed
        return path.normalize(p).replace(wsFolder, '${workspaceFolder' + workspaceQualifier + '}');
    }

    const executable = await getDebugExecutable(runnable);
    const env = prepareEnv(runnable, ctx.config.runnableEnv);
    let sourceFileMap = debugOptions.sourceFileMap;
    if (sourceFileMap === "auto") {
        // let's try to use the default toolchain
        const commitHash = await getRustcId(wsFolder);
        const sysroot = await getSysroot(wsFolder);
        const rustlib = path.normalize(sysroot + "/lib/rustlib/src/rust");
        sourceFileMap = {};
        sourceFileMap[`/rustc/${commitHash}/`] = rustlib;
    }

    const debugConfig = knownEngines[debugEngine.id](runnable, simplifyPath(executable), env, sourceFileMap);
    if (debugConfig.type in debugOptions.engineSettings) {
        const settingsMap = (debugOptions.engineSettings as any)[debugConfig.type];
        for (var key in settingsMap) {
            debugConfig[key] = settingsMap[key];
        }
    }

    if (debugConfig.name === "run binary") {
        // The LSP side: crates\rust-analyzer\src\main_loop\handlers.rs,
        // fn to_lsp_runnable(...) with RunnableKind::Bin
        debugConfig.name = `run ${path.basename(executable)}`;
    }

    if (debugConfig.cwd) {
        debugConfig.cwd = simplifyPath(debugConfig.cwd);
    }

    return debugConfig;
}

async function getDebugExecutable(runnable: ra.Runnable): Promise<string> {
    const cargo = new Cargo(runnable.args.workspaceRoot || '.', debugOutput);
    const executable = await cargo.executableFromArgs(runnable.args.cargoArgs);

    // if we are here, there were no compilation errors.
    return executable;
}

function getLldbDebugConfig(runnable: ra.Runnable, executable: string, env: Record<string, string>, sourceFileMap?: Record<string, string>): vscode.DebugConfiguration {
    return {
        type: "lldb",
        request: "launch",
        name: runnable.label,
        program: executable,
        args: runnable.args.executableArgs,
        cwd: runnable.args.workspaceRoot,
        sourceMap: sourceFileMap,
        sourceLanguages: ["rust"],
        env
    };
}

function getCppvsDebugConfig(runnable: ra.Runnable, executable: string, env: Record<string, string>, sourceFileMap?: Record<string, string>): vscode.DebugConfiguration {
    return {
        type: (os.platform() === "win32") ? "cppvsdbg" : "cppdbg",
        request: "launch",
        name: runnable.label,
        program: executable,
        args: runnable.args.executableArgs,
        cwd: runnable.args.workspaceRoot,
        sourceFileMap,
        env,
    };
}