blob: 82fa2a96a23c19d6f4dd341f803346e955dc53d0 [file] [log] [blame]
/*---------------------------------------------------------
* Copyright (C) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See LICENSE in the project root for license information.
*--------------------------------------------------------*/
'use strict';
import cp = require('child_process');
import vscode = require('vscode');
import { toolExecutionEnvironment } from './goEnv';
import { promptForMissingTool } from './goInstallTools';
import { documentSymbols, GoOutlineImportsOptions } from './goOutline';
import { getImportablePackages } from './goPackages';
import { getBinPath, getImportPath, parseFilePrelude } from './util';
import { envPath, getCurrentGoRoot } from './utils/goPath';
const missingToolMsg = 'Missing tool: ';
export async function listPackages(excludeImportedPkgs: boolean = false): Promise<string[]> {
const importedPkgs =
excludeImportedPkgs && vscode.window.activeTextEditor
? await getImports(vscode.window.activeTextEditor.document)
: [];
const pkgMap = await getImportablePackages(vscode.window.activeTextEditor.document.fileName, true);
const stdLibs: string[] = [];
const nonStdLibs: string[] = [];
pkgMap.forEach((value, key) => {
if (importedPkgs.some((imported) => imported === key)) {
return;
}
if (value.isStd) {
stdLibs.push(key);
} else {
nonStdLibs.push(key);
}
});
return [...stdLibs.sort(), ...nonStdLibs.sort()];
}
/**
* Returns the imported packages in the given file
*
* @param document TextDocument whose imports need to be returned
* @returns Array of imported package paths wrapped in a promise
*/
async function getImports(document: vscode.TextDocument): Promise<string[]> {
const options = {
fileName: document.fileName,
importsOption: GoOutlineImportsOptions.Only,
document
};
const symbols = await documentSymbols(options, null);
if (!symbols || !symbols.length) {
return [];
}
// import names will be of the form "math", so strip the quotes in the beginning and the end
const imports = symbols[0].children
.filter((x: any) => x.kind === vscode.SymbolKind.Namespace)
.map((x: any) => x.name.substr(1, x.name.length - 2));
return imports;
}
async function askUserForImport(): Promise<string | undefined> {
try {
const packages = await listPackages(true);
return vscode.window.showQuickPick(packages);
} catch (err) {
if (typeof err === 'string' && err.startsWith(missingToolMsg)) {
promptForMissingTool(err.substr(missingToolMsg.length));
}
}
}
export function getTextEditForAddImport(arg: string): vscode.TextEdit[] {
// Import name wasn't provided
if (arg === undefined) {
return null;
}
const { imports, pkg } = parseFilePrelude(vscode.window.activeTextEditor.document.getText());
if (imports.some((block) => block.pkgs.some((pkgpath) => pkgpath === arg))) {
return [];
}
const multis = imports.filter((x) => x.kind === 'multi');
const minusCgo = imports.filter((x) => x.kind !== 'pseudo');
if (multis.length > 0) {
// There is a multiple import declaration, add to the last one
const lastImportSection = multis[multis.length - 1];
if (lastImportSection.end === -1) {
// For some reason there was an empty import section like `import ()`
return [vscode.TextEdit.insert(new vscode.Position(lastImportSection.start + 1, 0), `import "${arg}"\n`)];
}
// Add import at the start of the block so that goimports/goreturns can order them correctly
return [vscode.TextEdit.insert(new vscode.Position(lastImportSection.start + 1, 0), '\t"' + arg + '"\n')];
} else if (minusCgo.length > 0) {
// There are some number of single line imports, which can just be collapsed into a block import.
const edits = [];
edits.push(vscode.TextEdit.insert(new vscode.Position(minusCgo[0].start, 0), 'import (\n\t"' + arg + '"\n'));
minusCgo.forEach((element) => {
const currentLine = vscode.window.activeTextEditor.document.lineAt(element.start).text;
const updatedLine = currentLine.replace(/^\s*import\s*/, '\t');
edits.push(
vscode.TextEdit.replace(
new vscode.Range(element.start, 0, element.start, currentLine.length),
updatedLine
)
);
});
edits.push(vscode.TextEdit.insert(new vscode.Position(minusCgo[minusCgo.length - 1].end + 1, 0), ')\n'));
return edits;
} else if (pkg && pkg.start >= 0) {
// There are no import declarations, but there is a package declaration
return [vscode.TextEdit.insert(new vscode.Position(pkg.start + 1, 0), '\nimport (\n\t"' + arg + '"\n)\n')];
} else {
// There are no imports and no package declaration - give up
return [];
}
}
export function addImport(arg: { importPath: string; from: string }) {
const editor = vscode.window.activeTextEditor;
if (!editor) {
vscode.window.showErrorMessage('No active editor found to add imports.');
return;
}
const p = arg && arg.importPath ? Promise.resolve(arg.importPath) : askUserForImport();
p.then((imp) => {
if (!imp) {
return;
}
const edits = getTextEditForAddImport(imp);
if (edits && edits.length > 0) {
const edit = new vscode.WorkspaceEdit();
edit.set(editor.document.uri, edits);
vscode.workspace.applyEdit(edit);
}
});
}
export function addImportToWorkspace() {
const editor = vscode.window.activeTextEditor;
if (!editor) {
vscode.window.showErrorMessage('No active editor found to determine current package.');
return;
}
const selection = editor.selection;
let importPath = '';
if (!selection.isEmpty) {
let selectedText = editor.document.getText(selection).trim();
if (selectedText.length > 0) {
if (selectedText.indexOf(' ') === -1) {
// Attempt to load a partial import path based on currently selected text
if (!selectedText.startsWith('"')) {
selectedText = '"' + selectedText;
}
if (!selectedText.endsWith('"')) {
selectedText = selectedText + '"';
}
}
importPath = getImportPath(selectedText);
}
}
if (importPath === '') {
// Failing that use the current line
const selectedText = editor.document.lineAt(selection.active.line).text;
importPath = getImportPath(selectedText);
}
if (importPath === '') {
vscode.window.showErrorMessage('No import path to add');
return;
}
const goRuntimePath = getBinPath('go');
if (!goRuntimePath) {
vscode.window.showErrorMessage(
`Failed to run "go list" to find the package as the "go" binary cannot be found in either GOROOT(${getCurrentGoRoot()}) or PATH(${envPath})`
);
return;
}
const env = toolExecutionEnvironment();
cp.execFile(goRuntimePath, ['list', '-f', '{{.Dir}}', importPath], { env }, (err, stdout, stderr) => {
const dirs = (stdout || '').split('\n');
if (!dirs.length || !dirs[0].trim()) {
vscode.window.showErrorMessage(`Could not find package ${importPath}`);
return;
}
const importPathUri = vscode.Uri.file(dirs[0]);
const existingWorkspaceFolder = vscode.workspace.getWorkspaceFolder(importPathUri);
if (existingWorkspaceFolder !== undefined) {
vscode.window.showInformationMessage('Already available under ' + existingWorkspaceFolder.name);
return;
}
vscode.workspace.updateWorkspaceFolders(
vscode.workspace.workspaceFolders ? vscode.workspace.workspaceFolders.length : 0,
null,
{ uri: importPathUri }
);
});
}