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-rw-r--r--editors/code/package.json5
-rw-r--r--editors/code/src/commands/expand_macro.ts83
-rw-r--r--editors/code/src/commands/index.ts2
-rw-r--r--editors/code/src/extension.ts12
4 files changed, 102 insertions, 0 deletions
diff --git a/editors/code/package.json b/editors/code/package.json
index fbf675d46..e21dfa174 100644
--- a/editors/code/package.json
+++ b/editors/code/package.json
@@ -92,6 +92,11 @@
92 "category": "Rust Analyzer" 92 "category": "Rust Analyzer"
93 }, 93 },
94 { 94 {
95 "command": "rust-analyzer.expandMacro",
96 "title": "Expand macro recursively",
97 "category": "Rust Analyzer"
98 },
99 {
95 "command": "rust-analyzer.matchingBrace", 100 "command": "rust-analyzer.matchingBrace",
96 "title": "Find matching brace", 101 "title": "Find matching brace",
97 "category": "Rust Analyzer" 102 "category": "Rust Analyzer"
diff --git a/editors/code/src/commands/expand_macro.ts b/editors/code/src/commands/expand_macro.ts
new file mode 100644
index 000000000..34e0c8fb3
--- /dev/null
+++ b/editors/code/src/commands/expand_macro.ts
@@ -0,0 +1,83 @@
1import * as vscode from 'vscode';
2import { Position, TextDocumentIdentifier } from 'vscode-languageclient';
3import { Server } from '../server';
4
5export const expandMacroUri = vscode.Uri.parse(
6 'rust-analyzer://expandMacro/[EXPANSION].rs'
7);
8
9export class ExpandMacroContentProvider
10 implements vscode.TextDocumentContentProvider {
11 public eventEmitter = new vscode.EventEmitter<vscode.Uri>();
12
13 public provideTextDocumentContent(
14 uri: vscode.Uri
15 ): vscode.ProviderResult<string> {
16 async function handle() {
17 const editor = vscode.window.activeTextEditor;
18 if (editor == null) {
19 return '';
20 }
21
22 const position = editor.selection.active;
23 const request: MacroExpandParams = {
24 textDocument: { uri: editor.document.uri.toString() },
25 position
26 };
27 const expanded = await Server.client.sendRequest<ExpandedMacro>(
28 'rust-analyzer/expandMacro',
29 request
30 );
31
32 if (expanded == null) {
33 return 'Not available';
34 }
35
36 return code_format(expanded);
37 }
38
39 return handle();
40 }
41
42 get onDidChange(): vscode.Event<vscode.Uri> {
43 return this.eventEmitter.event;
44 }
45}
46
47// Opens the virtual file that will show the syntax tree
48//
49// The contents of the file come from the `TextDocumentContentProvider`
50export function createHandle(provider: ExpandMacroContentProvider) {
51 return async () => {
52 const uri = expandMacroUri;
53
54 const document = await vscode.workspace.openTextDocument(uri);
55
56 provider.eventEmitter.fire(uri);
57
58 return vscode.window.showTextDocument(
59 document,
60 vscode.ViewColumn.Two,
61 true
62 );
63 };
64}
65
66interface MacroExpandParams {
67 textDocument: TextDocumentIdentifier;
68 position: Position;
69}
70
71interface ExpandedMacro {
72 name: string;
73 expansion: string;
74}
75
76function code_format(expanded: ExpandedMacro): string {
77 let result = `// Recursive expansion of ${expanded.name}! macro\n`;
78 result += '// ' + '='.repeat(result.length - 3);
79 result += '\n\n';
80 result += expanded.expansion;
81
82 return result;
83}
diff --git a/editors/code/src/commands/index.ts b/editors/code/src/commands/index.ts
index c194bd2ea..2ade6d331 100644
--- a/editors/code/src/commands/index.ts
+++ b/editors/code/src/commands/index.ts
@@ -1,5 +1,6 @@
1import * as analyzerStatus from './analyzer_status'; 1import * as analyzerStatus from './analyzer_status';
2import * as applySourceChange from './apply_source_change'; 2import * as applySourceChange from './apply_source_change';
3import * as expandMacro from './expand_macro';
3import * as inlayHints from './inlay_hints'; 4import * as inlayHints from './inlay_hints';
4import * as joinLines from './join_lines'; 5import * as joinLines from './join_lines';
5import * as matchingBrace from './matching_brace'; 6import * as matchingBrace from './matching_brace';
@@ -11,6 +12,7 @@ import * as syntaxTree from './syntaxTree';
11export { 12export {
12 analyzerStatus, 13 analyzerStatus,
13 applySourceChange, 14 applySourceChange,
15 expandMacro,
14 joinLines, 16 joinLines,
15 matchingBrace, 17 matchingBrace,
16 parentModule, 18 parentModule,
diff --git a/editors/code/src/extension.ts b/editors/code/src/extension.ts
index c06928d12..683497dfd 100644
--- a/editors/code/src/extension.ts
+++ b/editors/code/src/extension.ts
@@ -3,6 +3,7 @@ import * as lc from 'vscode-languageclient';
3 3
4import * as commands from './commands'; 4import * as commands from './commands';
5import { CargoWatchProvider } from './commands/cargo_watch'; 5import { CargoWatchProvider } from './commands/cargo_watch';
6import { ExpandMacroContentProvider } from './commands/expand_macro';
6import { HintsUpdater } from './commands/inlay_hints'; 7import { HintsUpdater } from './commands/inlay_hints';
7import { 8import {
8 interactivelyStartCargoWatch, 9 interactivelyStartCargoWatch,
@@ -97,6 +98,7 @@ export function activate(context: vscode.ExtensionContext) {
97 ] 98 ]
98 ]; 99 ];
99 const syntaxTreeContentProvider = new SyntaxTreeContentProvider(); 100 const syntaxTreeContentProvider = new SyntaxTreeContentProvider();
101 const expandMacroContentProvider = new ExpandMacroContentProvider();
100 102
101 // The events below are plain old javascript events, triggered and handled by vscode 103 // The events below are plain old javascript events, triggered and handled by vscode
102 vscode.window.onDidChangeActiveTextEditor( 104 vscode.window.onDidChangeActiveTextEditor(
@@ -109,11 +111,21 @@ export function activate(context: vscode.ExtensionContext) {
109 syntaxTreeContentProvider 111 syntaxTreeContentProvider
110 ) 112 )
111 ); 113 );
114 disposeOnDeactivation(
115 vscode.workspace.registerTextDocumentContentProvider(
116 'rust-analyzer',
117 expandMacroContentProvider
118 )
119 );
112 120
113 registerCommand( 121 registerCommand(
114 'rust-analyzer.syntaxTree', 122 'rust-analyzer.syntaxTree',
115 commands.syntaxTree.createHandle(syntaxTreeContentProvider) 123 commands.syntaxTree.createHandle(syntaxTreeContentProvider)
116 ); 124 );
125 registerCommand(
126 'rust-analyzer.expandMacro',
127 commands.expandMacro.createHandle(expandMacroContentProvider)
128 );
117 129
118 vscode.workspace.onDidChangeTextDocument( 130 vscode.workspace.onDidChangeTextDocument(
119 events.changeTextDocument.createHandler(syntaxTreeContentProvider), 131 events.changeTextDocument.createHandler(syntaxTreeContentProvider),