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Use a local arena to free all memory with one call.

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This commit is contained in:
Alexandros Naskos 2020-05-07 14:10:58 +03:00
parent e9d9c57ff4
commit a7e4d0b5e3
1 changed files with 8 additions and 19 deletions
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27
src/main.zig
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@ -161,28 +161,17 @@ pub fn publishDiagnostics(document: types.TextDocument) !void {
}
pub fn completeGlobal(id: i64, document: types.TextDocument) !void {
// The tree uses its own arena, so we just pass our main allocator.
const tree = try std.zig.parse(allocator, document.text);
defer tree.deinit();
if (tree.errors.len > 0) return try respondGeneric(id, no_completions_response);
var completions = std.ArrayList(types.CompletionItem).init(allocator);
defer {
// Free the completion data.
// @TODO: Check what the tree functions (e.g. tokenSlice) return.
// We may need to dupe them to free the tree
// TODO: Maybe split off into a function or add a method to MarkupContent/CompletionItem?
for (completions.items) |comp| {
if (comp.documentation) |doc| {
if (doc.value.len > 0) {
allocator.free(doc.value);
}
}
}
completions.deinit();
}
// We use a local arena allocator to deallocate all temporary data without iterating
var arena = std.heap.ArenaAllocator.init(allocator);
var completions = std.ArrayList(types.CompletionItem).init(&arena.allocator);
// Deallocate all temporary data.
defer arena.deinit();
// try log("{}", .{&tree.root_node.decls});
var decls = tree.root_node.decls.iterator(0);
@ -192,7 +181,7 @@ pub fn completeGlobal(id: i64, document: types.TextDocument) !void {
switch (decl.id) {
.FnProto => {
const func = decl.cast(std.zig.ast.Node.FnProto).?;
var doc_comments = try analysis.getDocComments(allocator, tree, decl);
var doc_comments = try analysis.getDocComments(&arena.allocator, tree, decl);
var doc = types.MarkupContent{
.kind = types.MarkupKind.Markdown,
.value = doc_comments orelse ""
@ -206,7 +195,7 @@ pub fn completeGlobal(id: i64, document: types.TextDocument) !void {
},
.VarDecl => {
const var_decl = decl.cast(std.zig.ast.Node.VarDecl).?;
var doc_comments = try analysis.getDocComments(allocator, tree, decl);
var doc_comments = try analysis.getDocComments(&arena.allocator, tree, decl);
var doc = types.MarkupContent{
.kind = types.MarkupKind.Markdown,
.value = doc_comments orelse ""