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stage2: inferred error set coercion

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This commit is contained in:
Robin Voetter
2021-12-17 04:39:09 +01:00
parent a2958a4ede
commit 9d6c45f697
3 changed files with 184 additions and 43 deletions
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15
src/Module.zig
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@@ -1239,14 +1239,17 @@ pub const Fn = struct {
/// When the inferred error set is fully resolved, this map contains all the errors that the function might return.
errors: std.StringHashMapUnmanaged(void) = .{},
/// Other functions with inferred error sets which the inferred error set of this
/// function should include.
functions: std.AutoHashMapUnmanaged(*Fn, void) = .{},
/// Other inferred error sets which this inferred error set should include.
inferred_error_sets: std.AutoHashMapUnmanaged(*InferredErrorSet, void) = .{},
/// Whether the function returned anyerror. This is true if either of the dependent functions
/// returns anyerror.
is_anyerror: bool = false,
/// Whether this error set is already fully resolved. If true, resolving can skip resolving any dependents
/// of this inferred error set.
is_resolved: bool = false,
pub fn addErrorSet(self: *InferredErrorSet, gpa: Allocator, err_set_ty: Type) !void {
switch (err_set_ty.tag()) {
.error_set => {
@@ -1260,8 +1263,8 @@ pub const Fn = struct {
try self.errors.put(gpa, name, {});
},
.error_set_inferred => {
const dependent_func = err_set_ty.castTag(.error_set_inferred).?.data.func;
try self.functions.put(gpa, dependent_func, {});
const set = err_set_ty.castTag(.error_set_inferred).?.data;
try self.inferred_error_sets.put(gpa, set, {});
},
.error_set_merged => {
const names = err_set_ty.castTag(.error_set_merged).?.data.keys();
@@ -1285,7 +1288,7 @@ pub const Fn = struct {
while (it) |node| {
const next = node.next;
node.data.errors.deinit(gpa);
node.data.functions.deinit(gpa);
node.data.inferred_error_sets.deinit(gpa);
gpa.destroy(node);
it = next;
}