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Add macro span handling

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This commit is contained in:
Edwin Cheng 2019-12-17 13:50:00 +08:00
parent ee93fac776
commit d2c1f8ee26
1 changed files with 38 additions and 0 deletions
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38
editors/code/src/utils/diagnostics/rust.ts
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@ -10,6 +10,12 @@ export enum SuggestionApplicability {
Unspecified = 'Unspecified',
}
export interface RustDiagnosticSpanMacroExpansion {
span: RustDiagnosticSpan;
macro_decl_name: string;
def_site_span?: RustDiagnosticSpan;
}
// Reference:
// https://github.com/rust-lang/rust/blob/master/src/libsyntax/json.rs
export interface RustDiagnosticSpan {
@ -20,6 +26,7 @@ export interface RustDiagnosticSpan {
is_primary: boolean;
file_name: string;
label?: string;
expansion?: RustDiagnosticSpanMacroExpansion;
suggested_replacement?: string;
suggestion_applicability?: SuggestionApplicability;
}
@ -60,10 +67,41 @@ function mapLevelToSeverity(s: string): vscode.DiagnosticSeverity {
return vscode.DiagnosticSeverity.Information;
}
/**
* Check whether a file name is from macro invocation
*/
function isFromMacro(fileName: string): boolean {
return fileName.startsWith('<') && fileName.endsWith('>');
}
/**
* Converts a Rust macro span to a VsCode location recursively
*/
function mapMacroSpanToLocation(
spanMacro: RustDiagnosticSpanMacroExpansion,
): vscode.Location | undefined {
if (!isFromMacro(spanMacro.span.file_name)) {
return mapSpanToLocation(spanMacro.span);
}
if (spanMacro.span.expansion) {
return mapMacroSpanToLocation(spanMacro.span.expansion);
}
return;
}
/**
* Converts a Rust span to a VsCode location
*/
function mapSpanToLocation(span: RustDiagnosticSpan): vscode.Location {
if (isFromMacro(span.file_name) && span.expansion) {
const macroLoc = mapMacroSpanToLocation(span.expansion);
if (macroLoc) {
return macroLoc;
}
}
const fileName = path.join(vscode.workspace.rootPath || '', span.file_name);
const fileUri = vscode.Uri.file(fileName);