compiler: more progress on incremental

lib/std/zig/AstGen.zig

@@ -13496,6 +13496,15 @@ fn scanDecls(astgen: *AstGen, namespace: *Scope.Namespace, members: []const Ast.
     const node_tags = tree.nodes.items(.tag);
     const main_tokens = tree.nodes.items(.main_token);
     const token_tags = tree.tokens.items(.tag);
+
+    // We don't have shadowing for test names, so we just track those for duplicate reporting locally.
+    var named_tests: std.AutoHashMapUnmanaged(Zir.NullTerminatedString, Ast.Node.Index) = .{};
+    var decltests: std.AutoHashMapUnmanaged(Zir.NullTerminatedString, Ast.Node.Index) = .{};
+    defer {
+        named_tests.deinit(gpa);
+        decltests.deinit(gpa);
+    }
+
     var decl_count: u32 = 0;
     for (members) |member_node| {
         const name_token = switch (node_tags[member_node]) {
@@ -13525,11 +13534,50 @@ fn scanDecls(astgen: *AstGen, namespace: *Scope.Namespace, members: []const Ast.
                 break :blk ident;
             },
 
-            .@"comptime", .@"usingnamespace", .test_decl => {
+            .@"comptime", .@"usingnamespace" => {
                 decl_count += 1;
                 continue;
             },
 
+            .test_decl => {
+                decl_count += 1;
+                // We don't want shadowing detection here, and test names work a bit differently, so
+                // we must do the redeclaration detection ourselves.
+                const test_name_token = main_tokens[member_node] + 1;
+                switch (token_tags[test_name_token]) {
+                    else => {}, // unnamed test
+                    .string_literal => {
+                        const name = try astgen.strLitAsString(test_name_token);
+                        const gop = try named_tests.getOrPut(gpa, name.index);
+                        if (gop.found_existing) {
+                            const name_slice = astgen.string_bytes.items[@intFromEnum(name.index)..][0..name.len];
+                            const name_duped = try gpa.dupe(u8, name_slice);
+                            defer gpa.free(name_duped);
+                            try astgen.appendErrorNodeNotes(member_node, "duplicate test name '{s}'", .{name_duped}, &.{
+                                try astgen.errNoteNode(gop.value_ptr.*, "other test here", .{}),
+                            });
+                        } else {
+                            gop.value_ptr.* = member_node;
+                        }
+                    },
+                    .identifier => {
+                        const name = try astgen.identAsString(test_name_token);
+                        const gop = try decltests.getOrPut(gpa, name);
+                        if (gop.found_existing) {
+                            const name_slice = mem.span(astgen.nullTerminatedString(name));
+                            const name_duped = try gpa.dupe(u8, name_slice);
+                            defer gpa.free(name_duped);
+                            try astgen.appendErrorNodeNotes(member_node, "duplicate decltest '{s}'", .{name_duped}, &.{
+                                try astgen.errNoteNode(gop.value_ptr.*, "other decltest here", .{}),
+                            });
+                        } else {
+                            gop.value_ptr.* = member_node;
+                        }
+                    },
+                }
+                continue;
+            },
+
             else => continue,
         };
 

src/InternPool.zig

@@ -67,6 +67,9 @@ src_hash_deps: std.AutoArrayHashMapUnmanaged(TrackedInst.Index, DepEntry.Index)
 /// Dependencies on the value of a Decl.
 /// Value is index into `dep_entries` of the first dependency on this Decl value.
 decl_val_deps: std.AutoArrayHashMapUnmanaged(DeclIndex, DepEntry.Index) = .{},
+/// Dependencies on the IES of a runtime function.
+/// Value is index into `dep_entries` of the first dependency on this Decl value.
+func_ies_deps: std.AutoArrayHashMapUnmanaged(Index, DepEntry.Index) = .{},
 /// Dependencies on the full set of names in a ZIR namespace.
 /// Key refers to a `struct_decl`, `union_decl`, etc.
 /// Value is index into `dep_entries` of the first dependency on this namespace.
@@ -167,6 +170,7 @@ pub const Depender = enum(u32) {
 pub const Dependee = union(enum) {
     src_hash: TrackedInst.Index,
     decl_val: DeclIndex,
+    func_ies: Index,
     namespace: TrackedInst.Index,
     namespace_name: NamespaceNameKey,
 };
@@ -212,6 +216,7 @@ pub fn dependencyIterator(ip: *const InternPool, dependee: Dependee) DependencyI
     const first_entry = switch (dependee) {
         .src_hash => |x| ip.src_hash_deps.get(x),
         .decl_val => |x| ip.decl_val_deps.get(x),
+        .func_ies => |x| ip.func_ies_deps.get(x),
         .namespace => |x| ip.namespace_deps.get(x),
         .namespace_name => |x| ip.namespace_name_deps.get(x),
     } orelse return .{
@@ -251,6 +256,7 @@ pub fn addDependency(ip: *InternPool, gpa: Allocator, depender: Depender, depend
             const gop = try switch (tag) {
                 .src_hash => ip.src_hash_deps,
                 .decl_val => ip.decl_val_deps,
+                .func_ies => ip.func_ies_deps,
                 .namespace => ip.namespace_deps,
                 .namespace_name => ip.namespace_name_deps,
             }.getOrPut(gpa, dependee_payload);
@@ -4324,6 +4330,7 @@ pub fn deinit(ip: *InternPool, gpa: Allocator) void {
 
     ip.src_hash_deps.deinit(gpa);
     ip.decl_val_deps.deinit(gpa);
+    ip.func_ies_deps.deinit(gpa);
     ip.namespace_deps.deinit(gpa);
     ip.namespace_name_deps.deinit(gpa);
 
@@ -7103,7 +7110,7 @@ pub fn getGeneratedTagEnumType(ip: *InternPool, gpa: Allocator, ini: GeneratedTa
     return @enumFromInt(gop.index);
 }
 
-pub const OpaqueTypeIni = struct {
+pub const OpaqueTypeInit = struct {
     has_namespace: bool,
     key: union(enum) {
         declared: struct {
@@ -7117,7 +7124,7 @@ pub const OpaqueTypeIni = struct {
     },
 };
 
-pub fn getOpaqueType(ip: *InternPool, gpa: Allocator, ini: OpaqueTypeIni) Allocator.Error!WipNamespaceType.Result {
+pub fn getOpaqueType(ip: *InternPool, gpa: Allocator, ini: OpaqueTypeInit) Allocator.Error!WipNamespaceType.Result {
     const adapter: KeyAdapter = .{ .intern_pool = ip };
     const gop = try ip.map.getOrPutAdapted(gpa, Key{ .opaque_type = switch (ini.key) {
         .declared => |d| .{ .declared = .{
@@ -9216,7 +9223,7 @@ pub fn funcTypeParamsLen(ip: *const InternPool, i: Index) u32 {
     return ip.extra.items[start + std.meta.fieldIndex(Tag.TypeFunction, "params_len").?];
 }
 
-fn unwrapCoercedFunc(ip: *const InternPool, i: Index) Index {
+pub fn unwrapCoercedFunc(ip: *const InternPool, i: Index) Index {
     const tags = ip.items.items(.tag);
     return switch (tags[@intFromEnum(i)]) {
         .func_coerced => {