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Add inlay parameter name hints for function calls

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Signed-off-by: imtsuki <me@qjx.app>
This commit is contained in:
imtsuki 2020-01-15 01:02:01 +08:00
parent d8d8c20077
commit c390e92fdd
6 changed files with 205 additions and 13 deletions
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51
editors/code/src/inlay_hints.ts
View file

@ -38,6 +38,12 @@ const typeHintDecorationType = vscode.window.createTextEditorDecorationType({
},
});
const parameterHintDecorationType = vscode.window.createTextEditorDecorationType({
before: {
color: new vscode.ThemeColor('rust_analyzer.inlayHint'),
}
})
class HintsUpdater {
private pending: Map<string, vscode.CancellationTokenSource> = new Map();
private ctx: Ctx;
@ -55,7 +61,10 @@ class HintsUpdater {
if (this.enabled) {
await this.refresh();
} else {
this.allEditors.forEach(it => this.setDecorations(it, []));
this.allEditors.forEach(it => {
this.setTypeDecorations(it, []);
this.setParameterDecorations(it, []);
});
}
}
@ -68,15 +77,27 @@ class HintsUpdater {
private async refreshEditor(editor: vscode.TextEditor): Promise<void> {
const newHints = await this.queryHints(editor.document.uri.toString());
if (newHints == null) return;
const newDecorations = newHints.map(hint => ({
range: hint.range,
renderOptions: {
after: {
contentText: `: ${hint.label}`,
const newTypeDecorations = newHints.filter(hint => hint.kind === 'TypeHint')
.map(hint => ({
range: hint.range,
renderOptions: {
after: {
contentText: `: ${hint.label}`,
},
},
},
}));
this.setDecorations(editor, newDecorations);
}));
this.setTypeDecorations(editor, newTypeDecorations);
const newParameterDecorations = newHints.filter(hint => hint.kind === 'ParameterHint')
.map(hint => ({
range: hint.range,
renderOptions: {
before: {
contentText: `${hint.label}: `,
},
},
}));
this.setParameterDecorations(editor, newParameterDecorations);
}
private get allEditors(): vscode.TextEditor[] {
@ -85,7 +106,7 @@ class HintsUpdater {
);
}
private setDecorations(
private setTypeDecorations(
editor: vscode.TextEditor,
decorations: vscode.DecorationOptions[],
) {
@ -95,6 +116,16 @@ class HintsUpdater {
);
}
private setParameterDecorations(
editor: vscode.TextEditor,
decorations: vscode.DecorationOptions[],
) {
editor.setDecorations(
parameterHintDecorationType,
this.enabled ? decorations : [],
);
}
private async queryHints(documentUri: string): Promise<InlayHint[] | null> {
let client = this.ctx.client;
if (!client) return null;