Merge branch 'master' into orca-dev

src/array.cpp

@@ -51,6 +51,13 @@ template <typename T> gb_internal void array_copy(Array<T> *array, Array<T> cons
 template <typename T> gb_internal T *array_end_ptr(Array<T> *array);
 
 
+template <typename T>
+gb_internal void array_sort(Array<T> &array, gbCompareProc compare_proc) {
+	gb_sort_array(array.data, array.count, compare_proc);
+}
+
+
+
 template <typename T>
 struct Slice {
 	T *data;

src/build_settings.cpp

@@ -394,6 +394,7 @@ struct BuildContext {
 	bool   warnings_as_errors;
 	bool   hide_error_line;
 	bool   terse_errors;
+	bool   json_errors;
 	bool   has_ansi_terminal_colours;
 
 	bool   ignore_lazy;
@@ -1281,10 +1282,17 @@ gb_internal String get_fullpath_core_collection(gbAllocator a, String path, bool
 }
 
 gb_internal bool show_error_line(void) {
-	return !build_context.hide_error_line;
+	return !build_context.hide_error_line && !build_context.json_errors;
+}
+
+gb_internal bool terse_errors(void) {
+	return build_context.terse_errors;
+}
+gb_internal bool json_errors(void) {
+	return build_context.json_errors;
 }
 gb_internal bool has_ansi_terminal_colours(void) {
-	return build_context.has_ansi_terminal_colours;
+	return build_context.has_ansi_terminal_colours && !json_errors();
 }
 
 gb_internal bool has_asm_extension(String const &path) {

src/check_builtin.cpp

@@ -1389,7 +1389,7 @@ gb_internal LoadDirectiveResult check_load_directory_directive(CheckerContext *c
 			}
 		}
 
-		gb_sort_array(file_caches.data, file_caches.count, file_cache_sort_cmp);
+		array_sort(file_caches, file_cache_sort_cmp);
 
 	}
 

src/check_expr.cpp

@@ -119,6 +119,8 @@ gb_internal bool is_diverging_expr(Ast *expr);
 
 gb_internal isize get_procedure_param_count_excluding_defaults(Type *pt, isize *param_count_);
 
+gb_internal bool is_expr_inferred_fixed_array(Ast *type_expr);
+
 enum LoadDirectiveResult {
 	LoadDirective_Success  = 0,
 	LoadDirective_Error    = 1,
@@ -2242,6 +2244,10 @@ gb_internal void check_assignment_error_suggestion(CheckerContext *c, Operand *o
 		error_line("\tSuggestion: the expression may be casted to %s\n", b);
 	} else if (check_integer_exceed_suggestion(c, o, type, max_bit_size)) {
 		return;
+	} else if (is_expr_inferred_fixed_array(c->type_hint_expr) && is_type_array_like(type) && is_type_array_like(o->type)) {
+		gbString s = expr_to_string(c->type_hint_expr);
+		error_line("\tSuggestion: make sure that `%s` is attached to the compound literal directly\n", s);
+		gb_string_free(s);
 	}
 }
 
@@ -6479,7 +6485,7 @@ gb_internal CallArgumentData check_call_arguments_proc_group(CheckerContext *c,
 	}
 
 	if (valids.count > 1) {
-		gb_sort_array(valids.data, valids.count, valid_index_and_score_cmp);
+		array_sort(valids, valid_index_and_score_cmp);
 		i64 best_score = valids[0].score;
 		Entity *best_entity = proc_entities[valids[0].index];
 		GB_ASSERT(best_entity != nullptr);
@@ -8672,6 +8678,23 @@ gb_internal void check_compound_literal_field_values(CheckerContext *c, Slice<As
 	}
 }
 
+gb_internal bool is_expr_inferred_fixed_array(Ast *type_expr) {
+	type_expr = unparen_expr(type_expr);
+	if (type_expr == nullptr) {
+		return false;
+	}
+
+	// [?]Type
+	if (type_expr->kind == Ast_ArrayType && type_expr->ArrayType.count != nullptr) {
+		Ast *count = type_expr->ArrayType.count;
+		if (count->kind == Ast_UnaryExpr &&
+		    count->UnaryExpr.op.kind == Token_Question) {
+		    	return true;
+		}
+	}
+	return false;
+}
+
 gb_internal ExprKind check_compound_literal(CheckerContext *c, Operand *o, Ast *node, Type *type_hint) {
 	ExprKind kind = Expr_Expr;
 	ast_node(cl, CompoundLit, node);
@@ -8682,20 +8705,31 @@ gb_internal ExprKind check_compound_literal(CheckerContext *c, Operand *o, Ast *
 	}
 	bool is_to_be_determined_array_count = false;
 	bool is_constant = true;
-	if (cl->type != nullptr) {
+
+	Ast *type_expr = cl->type;
+
+	bool used_type_hint_expr = false;
+	if (type_expr == nullptr && c->type_hint_expr != nullptr) {
+		if (is_expr_inferred_fixed_array(c->type_hint_expr)) {
+			type_expr = clone_ast(c->type_hint_expr);
+			used_type_hint_expr = true;
+		}
+	}
+
+	if (type_expr != nullptr) {
 		type = nullptr;
 
 		// [?]Type
-		if (cl->type->kind == Ast_ArrayType && cl->type->ArrayType.count != nullptr) {
-			Ast *count = cl->type->ArrayType.count;
+		if (type_expr->kind == Ast_ArrayType && type_expr->ArrayType.count != nullptr) {
+			Ast *count = type_expr->ArrayType.count;
 			if (count->kind == Ast_UnaryExpr &&
 			    count->UnaryExpr.op.kind == Token_Question) {
-				type = alloc_type_array(check_type(c, cl->type->ArrayType.elem), -1);
+				type = alloc_type_array(check_type(c, type_expr->ArrayType.elem), -1);
 				is_to_be_determined_array_count = true;
 			}
 			if (cl->elems.count > 0) {
-				if (cl->type->ArrayType.tag != nullptr) {
-					Ast *tag = cl->type->ArrayType.tag;
+				if (type_expr->ArrayType.tag != nullptr) {
+					Ast *tag = type_expr->ArrayType.tag;
 					GB_ASSERT(tag->kind == Ast_BasicDirective);
 					String name = tag->BasicDirective.name.string;
 					if (name == "soa") {
@@ -8705,9 +8739,9 @@ gb_internal ExprKind check_compound_literal(CheckerContext *c, Operand *o, Ast *
 				}
 			}
 		}
-		if (cl->type->kind == Ast_DynamicArrayType && cl->type->DynamicArrayType.tag != nullptr) {
+		if (type_expr->kind == Ast_DynamicArrayType && type_expr->DynamicArrayType.tag != nullptr) {
 			if (cl->elems.count > 0) {
-				Ast *tag = cl->type->DynamicArrayType.tag;
+				Ast *tag = type_expr->DynamicArrayType.tag;
 				GB_ASSERT(tag->kind == Ast_BasicDirective);
 				String name = tag->BasicDirective.name.string;
 				if (name == "soa") {
@@ -8718,7 +8752,7 @@ gb_internal ExprKind check_compound_literal(CheckerContext *c, Operand *o, Ast *
 		}
 
 		if (type == nullptr) {
-			type = check_type(c, cl->type);
+			type = check_type(c, type_expr);
 		}
 	}
 

src/check_stmt.cpp

@@ -1919,17 +1919,19 @@ gb_internal void check_value_decl_stmt(CheckerContext *ctx, Ast *node, u32 mod_f
 			e->Variable.thread_local_model = ac.thread_local_model;
 		}
 
-		if (is_arch_wasm() && e->Variable.thread_local_model.len != 0) {
-			// error(e->token, "@(thread_local) is not supported for this target platform");
-		}
-
-
 		if (ac.is_static && ac.thread_local_model != "") {
 			error(e->token, "The 'static' attribute is not needed if 'thread_local' is applied");
 		}
 	}
 
+	// NOTE(bill): This is to improve error handling for things like `x: [?]T = {...}`
+	Ast *prev_type_hint_expr = ctx->type_hint_expr;
+	ctx->type_hint_expr = vd->type;
+
 	check_init_variables(ctx, entities, entity_count, vd->values, str_lit("variable declaration"));
+
+	ctx->type_hint_expr = prev_type_hint_expr;
+
 	check_arity_match(ctx, vd, false);
 
 	for (isize i = 0; i < entity_count; i++) {

src/check_type.cpp

@@ -2834,6 +2834,111 @@ gb_internal Type *make_soa_struct_dynamic_array(CheckerContext *ctx, Ast *array_
 	return make_soa_struct_internal(ctx, array_typ_expr, elem_expr, elem, -1, nullptr, StructSoa_Dynamic);
 }
 
+gb_internal void check_array_type_internal(CheckerContext *ctx, Ast *e, Type **type, Type *named_type) {
+	ast_node(at, ArrayType, e);
+	if (at->count != nullptr) {
+		Operand o = {};
+		i64 count = check_array_count(ctx, &o, at->count);
+		Type *generic_type = nullptr;
+
+		Type *elem = check_type_expr(ctx, at->elem, nullptr);
+
+		if (o.mode == Addressing_Type && o.type->kind == Type_Generic) {
+			generic_type = o.type;
+		} else if (o.mode == Addressing_Type && is_type_enum(o.type)) {
+			Type *index = o.type;
+			Type *bt = base_type(index);
+			GB_ASSERT(bt->kind == Type_Enum);
+
+			Type *t = alloc_type_enumerated_array(elem, index, bt->Enum.min_value, bt->Enum.max_value, bt->Enum.fields.count, Token_Invalid);
+
+			bool is_sparse = false;
+			if (at->tag != nullptr) {
+				GB_ASSERT(at->tag->kind == Ast_BasicDirective);
+				String name = at->tag->BasicDirective.name.string;
+				if (name == "sparse") {
+					is_sparse = true;
+				} else {
+					error(at->tag, "Invalid tag applied to an enumerated array, got #%.*s", LIT(name));
+				}
+			}
+
+			if (!is_sparse && t->EnumeratedArray.count > bt->Enum.fields.count) {
+				error(e, "Non-contiguous enumeration used as an index in an enumerated array");
+				long long ea_count   = cast(long long)t->EnumeratedArray.count;
+				long long enum_count = cast(long long)bt->Enum.fields.count;
+				error_line("\tenumerated array length: %lld\n", ea_count);
+				error_line("\tenum field count: %lld\n", enum_count);
+				error_line("\tSuggestion: prepend #sparse to the enumerated array to allow for non-contiguous elements\n");
+				if (2*enum_count < ea_count) {
+					error_line("\tWarning: the number of named elements is much smaller than the length of the array, are you sure this is what you want?\n");
+					error_line("\t         this warning will be removed if #sparse is applied\n");
+				}
+			}
+			t->EnumeratedArray.is_sparse = is_sparse;
+
+			*type = t;
+
+			return;
+		}
+
+		if (count < 0) {
+			error(at->count, "? can only be used in conjuction with compound literals");
+			count = 0;
+		}
+
+
+		if (at->tag != nullptr) {
+			GB_ASSERT(at->tag->kind == Ast_BasicDirective);
+			String name = at->tag->BasicDirective.name.string;
+			if (name == "soa") {
+				*type = make_soa_struct_fixed(ctx, e, at->elem, elem, count, generic_type);
+			} else if (name == "simd") {
+				if (!is_type_valid_vector_elem(elem) && !is_type_polymorphic(elem)) {
+					gbString str = type_to_string(elem);
+					error(at->elem, "Invalid element type for #simd, expected an integer, float, or boolean with no specific endianness, got '%s'", str);
+					gb_string_free(str);
+					*type = alloc_type_array(elem, count, generic_type);
+					return;
+				}
+
+				if (generic_type != nullptr) {
+					// Ignore
+				} else if (count < 1 || !is_power_of_two(count)) {
+					error(at->count, "Invalid length for #simd, expected a power of two length, got '%lld'", cast(long long)count);
+					*type = alloc_type_array(elem, count, generic_type);
+					return;
+				}
+
+				*type = alloc_type_simd_vector(count, elem, generic_type);
+
+				if (count > SIMD_ELEMENT_COUNT_MAX) {
+					error(at->count, "#simd support a maximum element count of %d, got %lld", SIMD_ELEMENT_COUNT_MAX, cast(long long)count);
+				}
+			} else {
+				error(at->tag, "Invalid tag applied to array, got #%.*s", LIT(name));
+				*type = alloc_type_array(elem, count, generic_type);
+			}
+		} else {
+			*type = alloc_type_array(elem, count, generic_type);
+		}
+	} else {
+		Type *elem = check_type(ctx, at->elem);
+
+		if (at->tag != nullptr) {
+			GB_ASSERT(at->tag->kind == Ast_BasicDirective);
+			String name = at->tag->BasicDirective.name.string;
+			if (name == "soa") {
+				*type = make_soa_struct_slice(ctx, e, at->elem, elem);
+			} else {
+				error(at->tag, "Invalid tag applied to array, got #%.*s", LIT(name));
+				*type = alloc_type_slice(elem);
+			}
+		} else {
+			*type = alloc_type_slice(elem);
+		}
+	}
+}
 gb_internal bool check_type_internal(CheckerContext *ctx, Ast *e, Type **type, Type *named_type) {
 	GB_ASSERT_NOT_NULL(type);
 	if (e == nullptr) {
@@ -3072,109 +3177,7 @@ gb_internal bool check_type_internal(CheckerContext *ctx, Ast *e, Type **type, T
 	case_end;
 
 	case_ast_node(at, ArrayType, e);
-		if (at->count != nullptr) {
-			Operand o = {};
-			i64 count = check_array_count(ctx, &o, at->count);
-			Type *generic_type = nullptr;
-
-			Type *elem = check_type_expr(ctx, at->elem, nullptr);
-
-			if (o.mode == Addressing_Type && o.type->kind == Type_Generic) {
-				generic_type = o.type;
-			} else if (o.mode == Addressing_Type && is_type_enum(o.type)) {
-				Type *index = o.type;
-				Type *bt = base_type(index);
-				GB_ASSERT(bt->kind == Type_Enum);
-
-				Type *t = alloc_type_enumerated_array(elem, index, bt->Enum.min_value, bt->Enum.max_value, bt->Enum.fields.count, Token_Invalid);
-
-				bool is_sparse = false;
-				if (at->tag != nullptr) {
-					GB_ASSERT(at->tag->kind == Ast_BasicDirective);
-					String name = at->tag->BasicDirective.name.string;
-					if (name == "sparse") {
-						is_sparse = true;
-					} else {
-						error(at->tag, "Invalid tag applied to an enumerated array, got #%.*s", LIT(name));
-					}
-				}
-
-				if (!is_sparse && t->EnumeratedArray.count > bt->Enum.fields.count) {
-					error(e, "Non-contiguous enumeration used as an index in an enumerated array");
-					long long ea_count   = cast(long long)t->EnumeratedArray.count;
-					long long enum_count = cast(long long)bt->Enum.fields.count;
-					error_line("\tenumerated array length: %lld\n", ea_count);
-					error_line("\tenum field count: %lld\n", enum_count);
-					error_line("\tSuggestion: prepend #sparse to the enumerated array to allow for non-contiguous elements\n");
-					if (2*enum_count < ea_count) {
-						error_line("\tWarning: the number of named elements is much smaller than the length of the array, are you sure this is what you want?\n");
-						error_line("\t         this warning will be removed if #sparse is applied\n");
-					}
-				}
-				t->EnumeratedArray.is_sparse = is_sparse;
-
-				*type = t;
-
-				goto array_end;
-			}
-
-			if (count < 0) {
-				error(at->count, "? can only be used in conjuction with compound literals");
-				count = 0;
-			}
-
-
-			if (at->tag != nullptr) {
-				GB_ASSERT(at->tag->kind == Ast_BasicDirective);
-				String name = at->tag->BasicDirective.name.string;
-				if (name == "soa") {
-					*type = make_soa_struct_fixed(ctx, e, at->elem, elem, count, generic_type);
-				} else if (name == "simd") {
-					if (!is_type_valid_vector_elem(elem) && !is_type_polymorphic(elem)) {
-						gbString str = type_to_string(elem);
-						error(at->elem, "Invalid element type for #simd, expected an integer, float, or boolean with no specific endianness, got '%s'", str);
-						gb_string_free(str);
-						*type = alloc_type_array(elem, count, generic_type);
-						goto array_end;
-					}
-
-					if (generic_type != nullptr) {
-						// Ignore
-					} else if (count < 1 || !is_power_of_two(count)) {
-						error(at->count, "Invalid length for #simd, expected a power of two length, got '%lld'", cast(long long)count);
-						*type = alloc_type_array(elem, count, generic_type);
-						goto array_end;
-					}
-
-					*type = alloc_type_simd_vector(count, elem, generic_type);
-
-					if (count > SIMD_ELEMENT_COUNT_MAX) {
-						error(at->count, "#simd support a maximum element count of %d, got %lld", SIMD_ELEMENT_COUNT_MAX, cast(long long)count);
-					}
-				} else {
-					error(at->tag, "Invalid tag applied to array, got #%.*s", LIT(name));
-					*type = alloc_type_array(elem, count, generic_type);
-				}
-			} else {
-				*type = alloc_type_array(elem, count, generic_type);
-			}
-		} else {
-			Type *elem = check_type(ctx, at->elem);
-
-			if (at->tag != nullptr) {
-				GB_ASSERT(at->tag->kind == Ast_BasicDirective);
-				String name = at->tag->BasicDirective.name.string;
-				if (name == "soa") {
-					*type = make_soa_struct_slice(ctx, e, at->elem, elem);
-				} else {
-					error(at->tag, "Invalid tag applied to array, got #%.*s", LIT(name));
-					*type = alloc_type_slice(elem);
-				}
-			} else {
-				*type = alloc_type_slice(elem);
-			}
-		}
-	array_end:
+		check_array_type_internal(ctx, e, type, named_type);
 		set_base_type(named_type, *type);
 		return true;
 	case_end;
@@ -3344,9 +3347,37 @@ gb_internal Type *check_type_expr(CheckerContext *ctx, Ast *e, Type *named_type)
 
 	if (!ok) {
 		gbString err_str = expr_to_string(e);
+		defer (gb_string_free(err_str));
+
+		begin_error_block();
 		error(e, "'%s' is not a type", err_str);
-		gb_string_free(err_str);
+
 		type = t_invalid;
+
+
+		// NOTE(bill): Check for common mistakes from C programmers e.g. T[] and T[N]
+		Ast *node = unparen_expr(e);
+		if (node && node->kind == Ast_IndexExpr) {
+			gbString index_str = nullptr;
+			if (node->IndexExpr.index) {
+				index_str = expr_to_string(node->IndexExpr.index);
+			}
+			defer (gb_string_free(index_str));
+
+			gbString type_str = expr_to_string(node->IndexExpr.expr);
+			defer (gb_string_free(type_str));
+
+			error_line("\tSuggestion: Did you mean '[%s]%s'?", index_str ? index_str : "", type_str);
+			end_error_block();
+
+			// NOTE(bill): Minimize error propagation of bad array syntax by treating this like a type
+			if (node->IndexExpr.expr != nullptr) {
+				Ast *pseudo_array_expr = ast_array_type(e->file(), ast_token(node->IndexExpr.expr), node->IndexExpr.index, node->IndexExpr.expr);
+				check_array_type_internal(ctx, pseudo_array_expr, &type, nullptr);
+			}
+		} else {
+			end_error_block();
+		}
 	}
 
 	if (type == nullptr) {

src/checker.cpp

@@ -1205,7 +1205,7 @@ gb_internal void init_universal(void) {
 	}
 
 	if (defined_values_double_declaration) {
-		gb_exit(1);
+		exit_with_errors();
 	}
 
 
@@ -4551,7 +4551,7 @@ gb_internal void add_import_dependency_node(Checker *c, Ast *decl, PtrMap<AstPac
 		if (found == nullptr) {
 			Token token = ast_token(decl);
 			error(token, "Unable to find package: %.*s", LIT(path));
-			gb_exit(1);
+			exit_with_errors();
 		}
 		AstPackage *pkg = *found;
 		GB_ASSERT(pkg->scope != nullptr);
@@ -5091,7 +5091,7 @@ gb_internal void check_create_file_scopes(Checker *c) {
 	for_array(i, c->parser->packages) {
 		AstPackage *pkg = c->parser->packages[i];
 
-		gb_sort_array(pkg->files.data, pkg->files.count, sort_file_by_name);
+		array_sort(pkg->files, sort_file_by_name);
 
 		isize total_pkg_decl_count = 0;
 		for_array(j, pkg->files) {
@@ -5720,7 +5720,7 @@ gb_internal void remove_neighbouring_duplicate_entires_from_sorted_array(Array<E
 
 
 gb_internal void check_test_procedures(Checker *c) {
-	gb_sort_array(c->info.testing_procedures.data, c->info.testing_procedures.count, init_procedures_cmp);
+	array_sort(c->info.testing_procedures, init_procedures_cmp);
 	remove_neighbouring_duplicate_entires_from_sorted_array(&c->info.testing_procedures);
 
 	if (build_context.test_names.entries.count == 0) {
@@ -6169,8 +6169,8 @@ gb_internal GB_COMPARE_PROC(fini_procedures_cmp) {
 }
 
 gb_internal void check_sort_init_and_fini_procedures(Checker *c) {
-	gb_sort_array(c->info.init_procedures.data, c->info.init_procedures.count, init_procedures_cmp);
-	gb_sort_array(c->info.fini_procedures.data, c->info.fini_procedures.count, fini_procedures_cmp);
+	array_sort(c->info.init_procedures, init_procedures_cmp);
+	array_sort(c->info.fini_procedures, fini_procedures_cmp);
 
 	// NOTE(bill): remove possible duplicates from the init/fini lists
 	// NOTE(bill): because the arrays are sorted, you only need to check the previous element

src/checker.hpp

@@ -454,6 +454,7 @@ struct CheckerContext {
 	u32            state_flags;
 	bool           in_defer;
 	Type *         type_hint;
+	Ast *          type_hint_expr;
 
 	String         proc_name;
 	DeclInfo *     curr_proc_decl;

src/common.cpp

@@ -913,7 +913,7 @@ gb_internal void did_you_mean_append(DidYouMeanAnswers *d, String const &target)
 	array_add(&d->distances, dat);
 }
 gb_internal Slice<DistanceAndTarget> did_you_mean_results(DidYouMeanAnswers *d) {
-	gb_sort_array(d->distances.data, d->distances.count, gb_isize_cmp(gb_offset_of(DistanceAndTarget, distance)));
+	array_sort(d->distances, gb_isize_cmp(gb_offset_of(DistanceAndTarget, distance)));
 	isize count = 0;
 	for (isize i = 0; i < d->distances.count; i++) {
 		isize distance = d->distances[i].distance;

src/docs.cpp

@@ -237,7 +237,7 @@ gb_internal void print_doc_package(CheckerInfo *info, AstPackage *pkg) {
 			}
 			array_add(&entities, e);
 		}
-		gb_sort_array(entities.data, entities.count, cmp_entities_for_printing);
+		array_sort(entities, cmp_entities_for_printing);
 
 		bool show_docs = (build_context.cmd_doc_flags & CmdDocFlag_Short) == 0;
 
@@ -358,7 +358,7 @@ gb_internal void generate_documentation(Checker *c) {
 			}
 		}
 
-		gb_sort_array(pkgs.data, pkgs.count, cmp_ast_package_by_name);
+		array_sort(pkgs, cmp_ast_package_by_name);
 
 		for_array(i, pkgs) {
 			print_doc_package(info, pkgs[i]);

src/docs_writer.cpp

@@ -1107,7 +1107,7 @@ gb_internal void odin_doc_write_docs(OdinDocWriter *w) {
 	}
 
 	debugf("odin_doc_update_entities sort pkgs %s\n", w->state ? "preparing" : "writing");
-	gb_sort_array(pkgs.data, pkgs.count, cmp_ast_package_by_name);
+	array_sort(pkgs, cmp_ast_package_by_name);
 
 	for_array(i, pkgs) {
 		gbAllocator allocator = heap_allocator();
@@ -1170,7 +1170,7 @@ gb_internal void odin_doc_write_to_file(OdinDocWriter *w, char const *filename)
 	gbFileError err = gb_file_open_mode(&f, gbFileMode_Write, filename);
 	if (err != gbFileError_None) {
 		gb_printf_err("Failed to write .odin-doc to: %s\n", filename);
-		gb_exit(1);
+		exit_with_errors();
 		return;
 	}
 	defer (gb_file_close(&f));

src/error.cpp

@@ -1,28 +1,72 @@
+enum ErrorValueKind : u32 {
+	ErrorValue_Error,
+	ErrorValue_Warning,
+};
+
+struct ErrorValue {
+	ErrorValueKind kind;
+	TokenPos       pos;
+	TokenPos       end;
+	Array<String>  msgs;
+};
+
 struct ErrorCollector {
 	TokenPos prev;
 	std::atomic<i64>  count;
 	std::atomic<i64>  warning_count;
 	std::atomic<bool> in_block;
-	BlockingMutex     mutex;
-	BlockingMutex     error_out_mutex;
-	BlockingMutex     string_mutex;
-	RecursiveMutex    block_mutex;
-
-	RecursiveMutex error_buffer_mutex;
-	Array<u8>      error_buffer;
-	Array<String>  errors;
+
+	RecursiveMutex    mutex;
+	BlockingMutex     path_mutex;
+
+	Array<ErrorValue> error_values;
+	ErrorValue        curr_error_value;
+	std::atomic<bool> curr_error_value_set;
 };
 
 gb_global ErrorCollector global_error_collector;
 
 
+gb_internal void push_error_value(TokenPos const &pos, ErrorValueKind kind = ErrorValue_Error) {
+	GB_ASSERT(global_error_collector.curr_error_value_set.load() == false);
+	ErrorValue ev = {kind, pos};
+	ev.msgs.allocator = heap_allocator();
+
+	global_error_collector.curr_error_value = ev;
+	global_error_collector.curr_error_value_set.store(true);
+}
+
+gb_internal void pop_error_value(void) {
+	if (global_error_collector.curr_error_value_set.load()) {
+		array_add(&global_error_collector.error_values, global_error_collector.curr_error_value);
+
+		global_error_collector.curr_error_value = {};
+		global_error_collector.curr_error_value_set.store(false);
+	}
+}
+
+
+gb_internal void try_pop_error_value(void) {
+	if (!global_error_collector.in_block.load()) {
+		pop_error_value();
+	}
+}
+
+gb_internal ErrorValue *get_error_value(void) {
+	GB_ASSERT(global_error_collector.curr_error_value_set.load() == true);
+	return &global_error_collector.curr_error_value;
+}
+
+
+
 gb_internal bool any_errors(void) {
 	return global_error_collector.count.load() != 0;
 }
 
+
+
 gb_internal void init_global_error_collector(void) {
-	array_init(&global_error_collector.errors, heap_allocator());
-	array_init(&global_error_collector.error_buffer, heap_allocator());
+	array_init(&global_error_collector.error_values, heap_allocator());
 	array_init(&global_file_path_strings, heap_allocator(), 1, 4096);
 	array_init(&global_files,             heap_allocator(), 1, 4096);
 }
@@ -37,7 +81,7 @@ gb_internal char *token_pos_to_string(TokenPos const &pos);
 gb_internal bool set_file_path_string(i32 index, String const &path) {
 	bool ok = false;
 	GB_ASSERT(index >= 0);
-	mutex_lock(&global_error_collector.string_mutex);
+	mutex_lock(&global_error_collector.path_mutex);
 
 	if (index >= global_file_path_strings.count) {
 		array_resize(&global_file_path_strings, index+1);
@@ -48,14 +92,14 @@ gb_internal bool set_file_path_string(i32 index, String const &path) {
 		ok = true;
 	}
 
-	mutex_unlock(&global_error_collector.string_mutex);
+	mutex_unlock(&global_error_collector.path_mutex);
 	return ok;
 }
 
 gb_internal bool thread_safe_set_ast_file_from_id(i32 index, AstFile *file) {
 	bool ok = false;
 	GB_ASSERT(index >= 0);
-	mutex_lock(&global_error_collector.string_mutex);
+	mutex_lock(&global_error_collector.path_mutex);
 
 	if (index >= global_files.count) {
 		array_resize(&global_files, index+1);
@@ -66,33 +110,33 @@ gb_internal bool thread_safe_set_ast_file_from_id(i32 index, AstFile *file) {
 		ok = true;
 	}
 
-	mutex_unlock(&global_error_collector.string_mutex);
+	mutex_unlock(&global_error_collector.path_mutex);
 	return ok;
 }
 
 gb_internal String get_file_path_string(i32 index) {
 	GB_ASSERT(index >= 0);
-	mutex_lock(&global_error_collector.string_mutex);
+	mutex_lock(&global_error_collector.path_mutex);
 
 	String path = {};
 	if (index < global_file_path_strings.count) {
 		path = global_file_path_strings[index];
 	}
 
-	mutex_unlock(&global_error_collector.string_mutex);
+	mutex_unlock(&global_error_collector.path_mutex);
 	return path;
 }
 
 gb_internal AstFile *thread_safe_get_ast_file_from_id(i32 index) {
 	GB_ASSERT(index >= 0);
-	mutex_lock(&global_error_collector.string_mutex);
+	mutex_lock(&global_error_collector.path_mutex);
 
 	AstFile *file = nullptr;
 	if (index < global_files.count) {
 		file = global_files[index];
 	}
 
-	mutex_unlock(&global_error_collector.string_mutex);
+	mutex_unlock(&global_error_collector.path_mutex);
 	return file;
 }
 
@@ -102,6 +146,8 @@ gb_internal AstFile *thread_safe_get_ast_file_from_id(i32 index) {
 gb_internal bool global_warnings_as_errors(void);
 gb_internal bool global_ignore_warnings(void);
 gb_internal bool show_error_line(void);
+gb_internal bool terse_errors(void);
+gb_internal bool json_errors(void);
 gb_internal bool has_ansi_terminal_colours(void);
 gb_internal gbString get_file_line_as_string(TokenPos const &pos, i32 *offset);
 
@@ -113,97 +159,41 @@ gb_internal void syntax_error(Token const &token, char const *fmt, ...);
 gb_internal void syntax_error(TokenPos pos, char const *fmt, ...);
 gb_internal void syntax_warning(Token const &token, char const *fmt, ...);
 gb_internal void compiler_error(char const *fmt, ...);
-
-gb_internal void begin_error_block(void) {
-	mutex_lock(&global_error_collector.block_mutex);
-	global_error_collector.in_block.store(true);
-}
-
-gb_internal void end_error_block(void) {
-	mutex_lock(&global_error_collector.error_buffer_mutex);
-	isize n = global_error_collector.error_buffer.count;
-	if (n > 0) {
-		u8 *text = global_error_collector.error_buffer.data;
-
-		bool add_extra_newline = false;
-
-		if (show_error_line()) {
-			if (n >= 2 && !(text[n-2] == '\n' && text[n-1] == '\n')) {
-				add_extra_newline = true;
-			}
-		} else {
-			isize newline_count = 0;
-			for (isize i = 0; i < n; i++) {
-				if (text[i] == '\n') {
-					newline_count += 1;
-				}
-			}
-			if (newline_count > 1) {
-				add_extra_newline = true;
-			}
-		}
-
-		if (add_extra_newline) {
-			// add an extra new line as padding when the error line is being shown
-			error_line("\n");
-		}
-
-		n = global_error_collector.error_buffer.count;
-		text = gb_alloc_array(permanent_allocator(), u8, n+1);
-		gb_memmove(text, global_error_collector.error_buffer.data, n);
-		text[n] = 0;
-
-
-		mutex_lock(&global_error_collector.error_out_mutex);
-		String s = {text, n};
-		array_add(&global_error_collector.errors, s);
-		mutex_unlock(&global_error_collector.error_out_mutex);
-
-		global_error_collector.error_buffer.count = 0;
-	}
-	mutex_unlock(&global_error_collector.error_buffer_mutex);
-	global_error_collector.in_block.store(false);
-	mutex_unlock(&global_error_collector.block_mutex);
-}
-
-#define ERROR_BLOCK() begin_error_block(); defer (end_error_block())
+gb_internal void print_all_errors(void);
 
 
 #define ERROR_OUT_PROC(name) void name(char const *fmt, va_list va)
 typedef ERROR_OUT_PROC(ErrorOutProc);
 
 gb_internal ERROR_OUT_PROC(default_error_out_va) {
-	gbFile *f = gb_file_get_standard(gbFileStandard_Error);
-
 	char buf[4096] = {};
 	isize len = gb_snprintf_va(buf, gb_size_of(buf), fmt, va);
 	isize n = len-1;
-	if (global_error_collector.in_block) {
-		mutex_lock(&global_error_collector.error_buffer_mutex);
-
-		isize cap = global_error_collector.error_buffer.count + n;
-		array_reserve(&global_error_collector.error_buffer, cap);
-		u8 *data = global_error_collector.error_buffer.data + global_error_collector.error_buffer.count;
-		gb_memmove(data, buf, n);
-		global_error_collector.error_buffer.count += n;
-
-		mutex_unlock(&global_error_collector.error_buffer_mutex);
-	} else {
-		mutex_lock(&global_error_collector.error_out_mutex);
-		{
-			u8 *text = gb_alloc_array(permanent_allocator(), u8, n+1);
-			gb_memmove(text, buf, n);
-			text[n] = 0;
-			array_add(&global_error_collector.errors, make_string(text, n));
-		}
-		mutex_unlock(&global_error_collector.error_out_mutex);
 
+	if (n > 0) {
+		String msg = copy_string(permanent_allocator(), {(u8 *)buf, n});
+		ErrorValue *ev = get_error_value();
+		array_add(&ev->msgs, msg);
 	}
-	gb_file_write(f, buf, n);
 }
 
 gb_global ErrorOutProc *error_out_va = default_error_out_va;
 
+gb_internal void begin_error_block(void) {
+	mutex_lock(&global_error_collector.mutex);
+	global_error_collector.in_block.store(true);
+}
+
+gb_internal void end_error_block(void) {
+	pop_error_value();
+	global_error_collector.in_block.store(false);
+	mutex_unlock(&global_error_collector.mutex);
+}
+
+#define ERROR_BLOCK() begin_error_block(); defer (end_error_block())
+
+
+
 gb_internal void error_out(char const *fmt, ...) {
 	va_list va;
 	va_start(va, fmt);
@@ -256,6 +246,7 @@ gb_internal void terminal_reset_colours(void) {
 
 
 gb_internal bool show_error_on_line(TokenPos const &pos, TokenPos end) {
+	get_error_value()->end = end;
 	if (!show_error_line()) {
 		return false;
 	}
@@ -340,6 +331,9 @@ gb_internal bool show_error_on_line(TokenPos const &pos, TokenPos end) {
 	return false;
 }
 
+gb_internal void error_out_empty(void) {
+	error_out("");
+}
 gb_internal void error_out_pos(TokenPos pos) {
 	terminal_set_colours(TerminalStyle_Bold, TerminalColour_White);
 	error_out("%s ", token_pos_to_string(pos));
@@ -357,11 +351,15 @@ gb_internal void error_out_coloured(char const *str, TerminalStyle style, Termin
 gb_internal void error_va(TokenPos const &pos, TokenPos end, char const *fmt, va_list va) {
 	global_error_collector.count.fetch_add(1);
 	if (global_error_collector.count > MAX_ERROR_COLLECTOR_COUNT()) {
+		print_all_errors();
 		gb_exit(1);
 	}
 	mutex_lock(&global_error_collector.mutex);
+
+	push_error_value(pos, ErrorValue_Error);
 	// NOTE(bill): Duplicate error, skip it
 	if (pos.line == 0) {
+		error_out_empty();
 		error_out_coloured("Error: ", TerminalStyle_Normal, TerminalColour_Red);
 		error_out_va(fmt, va);
 		error_out("\n");
@@ -377,6 +375,7 @@ gb_internal void error_va(TokenPos const &pos, TokenPos end, char const *fmt, va
 	} else {
 		global_error_collector.count.fetch_sub(1);
 	}
+	try_pop_error_value();
 	mutex_unlock(&global_error_collector.mutex);
 }
 
@@ -387,9 +386,13 @@ gb_internal void warning_va(TokenPos const &pos, TokenPos end, char const *fmt,
 	}
 	global_error_collector.warning_count.fetch_add(1);
 	mutex_lock(&global_error_collector.mutex);
+
+	push_error_value(pos, ErrorValue_Warning);
+
 	if (!global_ignore_warnings()) {
 		// NOTE(bill): Duplicate error, skip it
 		if (pos.line == 0) {
+			error_out_empty();
 			error_out_coloured("Warning: ", TerminalStyle_Normal, TerminalColour_Yellow);
 			error_out_va(fmt, va);
 			error_out("\n");
@@ -402,6 +405,7 @@ gb_internal void warning_va(TokenPos const &pos, TokenPos end, char const *fmt,
 			show_error_on_line(pos, end);
 		}
 	}
+	try_pop_error_value();
 	mutex_unlock(&global_error_collector.mutex);
 }
 
@@ -413,11 +417,16 @@ gb_internal void error_line_va(char const *fmt, va_list va) {
 gb_internal void error_no_newline_va(TokenPos const &pos, char const *fmt, va_list va) {
 	global_error_collector.count.fetch_add(1);
 	if (global_error_collector.count.load() > MAX_ERROR_COLLECTOR_COUNT()) {
+		print_all_errors();
 		gb_exit(1);
 	}
 	mutex_lock(&global_error_collector.mutex);
+
+	push_error_value(pos, ErrorValue_Error);
+
 	// NOTE(bill): Duplicate error, skip it
 	if (pos.line == 0) {
+		error_out_empty();
 		error_out_coloured("Error: ", TerminalStyle_Normal, TerminalColour_Red);
 		error_out_va(fmt, va);
 	} else if (global_error_collector.prev != pos) {
@@ -428,6 +437,8 @@ gb_internal void error_no_newline_va(TokenPos const &pos, char const *fmt, va_li
 		}
 		error_out_va(fmt, va);
 	}
+
+	try_pop_error_value();
 	mutex_unlock(&global_error_collector.mutex);
 }
 
@@ -435,9 +446,13 @@ gb_internal void error_no_newline_va(TokenPos const &pos, char const *fmt, va_li
 gb_internal void syntax_error_va(TokenPos const &pos, TokenPos end, char const *fmt, va_list va) {
 	global_error_collector.count.fetch_add(1);
 	if (global_error_collector.count > MAX_ERROR_COLLECTOR_COUNT()) {
+		print_all_errors();
 		gb_exit(1);
 	}
 	mutex_lock(&global_error_collector.mutex);
+
+	push_error_value(pos, ErrorValue_Warning);
+
 	// NOTE(bill): Duplicate error, skip it
 	if (global_error_collector.prev != pos) {
 		global_error_collector.prev = pos;
@@ -447,21 +462,29 @@ gb_internal void syntax_error_va(TokenPos const &pos, TokenPos end, char const *
 		error_out("\n");
 		// show_error_on_line(pos, end);
 	} else if (pos.line == 0) {
+		error_out_empty();
 		error_out_coloured("Syntax Error: ", TerminalStyle_Normal, TerminalColour_Red);
 		error_out_va(fmt, va);
 		error_out("\n");
 	}
+
+	try_pop_error_value();
 	mutex_unlock(&global_error_collector.mutex);
 }
 
 gb_internal void syntax_error_with_verbose_va(TokenPos const &pos, TokenPos end, char const *fmt, va_list va) {
 	global_error_collector.count.fetch_add(1);
 	if (global_error_collector.count > MAX_ERROR_COLLECTOR_COUNT()) {
+		print_all_errors();
 		gb_exit(1);
 	}
 	mutex_lock(&global_error_collector.mutex);
+
+	push_error_value(pos, ErrorValue_Warning);
+
 	// NOTE(bill): Duplicate error, skip it
 	if (pos.line == 0) {
+		error_out_empty();
 		error_out_coloured("Syntax_Error: ", TerminalStyle_Normal, TerminalColour_Red);
 		error_out_va(fmt, va);
 		error_out("\n");
@@ -475,6 +498,8 @@ gb_internal void syntax_error_with_verbose_va(TokenPos const &pos, TokenPos end,
 		error_out("\n");
 		show_error_on_line(pos, end);
 	}
+
+	try_pop_error_value();
 	mutex_unlock(&global_error_collector.mutex);
 }
 
@@ -486,6 +511,10 @@ gb_internal void syntax_warning_va(TokenPos const &pos, TokenPos end, char const
 	}
 	mutex_lock(&global_error_collector.mutex);
 	global_error_collector.warning_count++;
+
+
+	push_error_value(pos, ErrorValue_Warning);
+
 	if (!global_ignore_warnings()) {
 		// NOTE(bill): Duplicate error, skip it
 		if (global_error_collector.prev != pos) {
@@ -496,11 +525,14 @@ gb_internal void syntax_warning_va(TokenPos const &pos, TokenPos end, char const
 			error_out("\n");
 			// show_error_on_line(pos, end);
 		} else if (pos.line == 0) {
+			error_out_empty();
 			error_out_coloured("Syntax Warning: ", TerminalStyle_Normal, TerminalColour_Yellow);
 			error_out_va(fmt, va);
 			error_out("\n");
 		}
 	}
+
+	try_pop_error_value();
 	mutex_unlock(&global_error_collector.mutex);
 }
 
@@ -568,6 +600,8 @@ gb_internal void syntax_error_with_verbose(TokenPos pos, TokenPos end, char cons
 
 
 gb_internal void compiler_error(char const *fmt, ...) {
+	print_all_errors();
+
 	va_list va;
 
 	va_start(va, fmt);
@@ -577,3 +611,116 @@ gb_internal void compiler_error(char const *fmt, ...) {
 	GB_DEBUG_TRAP();
 	gb_exit(1);
 }
+
+
+gb_internal void exit_with_errors(void) {
+	print_all_errors();
+	gb_exit(1);
+}
+
+
+
+gb_internal int error_value_cmp(void const *a, void const *b) {
+	ErrorValue *x = cast(ErrorValue *)a;
+	ErrorValue *y = cast(ErrorValue *)b;
+	return token_pos_cmp(x->pos, y->pos);
+}
+
+gb_internal void print_all_errors(void) {
+	auto const &escape_char = [](gbFile *f, u8 c) {
+		switch (c) {
+		case '\n': gb_file_write(f, "\\n",  2); break;
+		case '"':  gb_file_write(f, "\\\"", 2); break;
+		case '\\': gb_file_write(f, "\\\\", 2); break;
+		case '\b': gb_file_write(f, "\\b",  2); break;
+		case '\f': gb_file_write(f, "\\f",  2); break;
+		case '\r': gb_file_write(f, "\\r",  2); break;
+		case '\t': gb_file_write(f, "\\t",  2); break;
+		default:
+			if ('\x00' <= c && c <= '\x1f') {
+				gb_fprintf(f, "\\u%04x", c);
+			} else {
+				gb_file_write(f, &c, 1);
+			}
+			break;
+		}
+	};
+
+	GB_ASSERT(any_errors());
+	gbFile *f = gb_file_get_standard(gbFileStandard_Error);
+
+	array_sort(global_error_collector.error_values, error_value_cmp);
+
+
+	if (json_errors()) {
+		gb_fprintf(f, "{\n");
+		gb_fprintf(f, "\t\"error_count\": %td,\n", global_error_collector.error_values.count);
+		gb_fprintf(f, "\t\"errors\": [\n");
+		for_array(i, global_error_collector.error_values) {
+			ErrorValue ev = global_error_collector.error_values[i];
+
+			gb_fprintf(f, "\t\t{\n");
+
+			gb_fprintf(f, "\t\t\t\"pos\": {\n");
+
+			if (ev.pos.file_id) {
+				gb_fprintf(f, "\t\t\t\t\"file\": \"");
+				String file = get_file_path_string(ev.pos.file_id);
+				for (isize k = 0; k < file.len; k++) {
+					escape_char(f, file.text[k]);
+				}
+				gb_fprintf(f, "\",\n");
+				gb_fprintf(f, "\t\t\t\t\"line\": %d,\n", ev.pos.line);
+				gb_fprintf(f, "\t\t\t\t\"column\": %d,\n", ev.pos.column);
+				i32 end_column = gb_max(ev.end.column, ev.pos.column);
+				gb_fprintf(f, "\t\t\t\t\"end_column\": %d\n", end_column);
+				gb_fprintf(f, "\t\t\t},\n");
+			}
+
+			gb_fprintf(f, "\t\t\t\"msgs\": [\n");
+
+			if (ev.msgs.count > 1) {
+				gb_fprintf(f, "\t\t\t\t\"");
+
+				for (isize j = 1; j < ev.msgs.count; j++) {
+					String msg = ev.msgs[j];
+					for (isize k = 0; k < msg.len; k++) {
+						u8 c = msg.text[k];
+						if (c == '\n') {
+							if (k+1 == msg.len && j+1 == ev.msgs.count) {
+								// don't do the last one
+							} else {
+								gb_fprintf(f, "\",\n");
+								gb_fprintf(f, "\t\t\t\t\"");
+							}
+						} else {
+							escape_char(f, c);
+						}
+					}
+				}
+				gb_fprintf(f, "\"\n");
+			}
+			gb_fprintf(f, "\t\t\t]\n");
+			gb_fprintf(f, "\t\t}");
+			if (i+1 != global_error_collector.error_values.count) {
+				gb_fprintf(f, ",");
+			}
+			gb_fprintf(f, "\n");
+		}
+
+		gb_fprintf(f, "\t]\n");
+		gb_fprintf(f, "}\n");
+	} else {
+		for_array(i, global_error_collector.error_values) {
+			ErrorValue ev = global_error_collector.error_values[i];
+			for (isize j = 0; j < ev.msgs.count; j++) {
+				String msg = ev.msgs[j];
+				gb_file_write(f, msg.text, msg.len);
+
+				if (terse_errors() && string_contains_char(msg, '\n')) {
+					break;
+				}
+			}
+		}
+	}
+}

src/llvm_backend.cpp

@@ -1350,7 +1350,7 @@ gb_internal WORKER_TASK_PROC(lb_llvm_emit_worker_proc) {
 
 	if (LLVMTargetMachineEmitToFile(wd->target_machine, wd->m->mod, cast(char *)wd->filepath_obj.text, wd->code_gen_file_type, &llvm_error)) {
 		gb_printf_err("LLVM Error: %s\n", llvm_error);
-		gb_exit(1);
+		exit_with_errors();
 	}
 	debugf("Generated File: %.*s\n", LIT(wd->filepath_obj));
 	return 0;
@@ -1919,7 +1919,7 @@ verify
 				gb_printf_err("LLVM Error: %s\n", llvm_error);
 			}
 		}
-		gb_exit(1);
+		exit_with_errors();
 		return 1;
 	}
 #endif
@@ -2104,11 +2104,11 @@ gb_internal WORKER_TASK_PROC(lb_llvm_module_verification_worker_proc) {
 			String filepath_ll = lb_filepath_ll_for_module(m);
 			if (LLVMPrintModuleToFile(m->mod, cast(char const *)filepath_ll.text, &llvm_error)) {
 				gb_printf_err("LLVM Error: %s\n", llvm_error);
-				gb_exit(1);
+				exit_with_errors();
 				return false;
 			}
 		}
-		gb_exit(1);
+		exit_with_errors();
 		return 1;
 	}
 	return 0;
@@ -2193,7 +2193,7 @@ gb_internal bool lb_llvm_object_generation(lbGenerator *gen, bool do_threading)
 
 			if (LLVMTargetMachineEmitToFile(m->target_machine, m->mod, cast(char *)filepath_obj.text, code_gen_file_type, &llvm_error)) {
 				gb_printf_err("LLVM Error: %s\n", llvm_error);
-				gb_exit(1);
+				exit_with_errors();
 				return false;
 			}
 			debugf("Generated File: %.*s\n", LIT(filepath_obj));
@@ -2393,7 +2393,7 @@ gb_internal void lb_generate_procedure(lbModule *m, lbProcedure *p) {
 			gb_printf_err("LLVM Error: %s\n", llvm_error);
 		}
 		LLVMVerifyFunction(p->value, LLVMPrintMessageAction);
-		gb_exit(1);
+		exit_with_errors();
 	}
 }
 
@@ -2962,7 +2962,7 @@ gb_internal bool lb_generate_code(lbGenerator *gen) {
 			String filepath_ll = lb_filepath_ll_for_module(m);
 			if (LLVMPrintModuleToFile(m->mod, cast(char const *)filepath_ll.text, &llvm_error)) {
 				gb_printf_err("LLVM Error: %s\n", llvm_error);
-				gb_exit(1);
+				exit_with_errors();
 				return false;
 			}
 			array_add(&gen->output_temp_paths, filepath_ll);
@@ -3021,7 +3021,7 @@ gb_internal bool lb_generate_code(lbGenerator *gen) {
 		}
 	}
 
-	gb_sort_array(gen->foreign_libraries.data, gen->foreign_libraries.count, foreign_library_cmp);
+	array_sort(gen->foreign_libraries, foreign_library_cmp);
 
 	return true;
 }

src/main.cpp

@@ -292,6 +292,7 @@ enum BuildFlagKind {
 	BuildFlag_WarningsAsErrors,
 	BuildFlag_TerseErrors,
 	BuildFlag_VerboseErrors,
+	BuildFlag_JsonErrors,
 	BuildFlag_ErrorPosStyle,
 	BuildFlag_MaxErrorCount,
 
@@ -480,6 +481,7 @@ gb_internal bool parse_build_flags(Array<String> args) {
 	add_flag(&build_flags, BuildFlag_WarningsAsErrors,        str_lit("warnings-as-errors"),        BuildFlagParam_None,    Command_all);
 	add_flag(&build_flags, BuildFlag_TerseErrors,             str_lit("terse-errors"),              BuildFlagParam_None,    Command_all);
 	add_flag(&build_flags, BuildFlag_VerboseErrors,           str_lit("verbose-errors"),            BuildFlagParam_None,    Command_all);
+	add_flag(&build_flags, BuildFlag_JsonErrors,              str_lit("json-errors"),               BuildFlagParam_None,    Command_all);
 	add_flag(&build_flags, BuildFlag_ErrorPosStyle,           str_lit("error-pos-style"),           BuildFlagParam_String,  Command_all);
 	add_flag(&build_flags, BuildFlag_MaxErrorCount,           str_lit("max-error-count"),           BuildFlagParam_Integer, Command_all);
 
@@ -1184,6 +1186,10 @@ gb_internal bool parse_build_flags(Array<String> args) {
 							build_context.terse_errors = false;
 							break;
 
+						case BuildFlag_JsonErrors:
+							build_context.json_errors = true;
+							break;
+
 						case BuildFlag_ErrorPosStyle:
 							GB_ASSERT(value.kind == ExactValue_String);
 
@@ -1398,7 +1404,7 @@ gb_internal void timings_export_all(Timings *t, Checker *c, bool timings_are_fin
 	gbFileError err = gb_file_open_mode(&f, gbFileMode_Write, fileName);
 	if (err != gbFileError_None) {
 		gb_printf_err("Failed to export timings to: %s\n", fileName);
-		gb_exit(1);
+		exit_with_errors();
 		return;
 	} else {
 		gb_printf("\nExporting timings to '%s'... ", fileName);
@@ -1984,6 +1990,10 @@ gb_internal void print_show_help(String const arg0, String const &command) {
 		print_usage_line(2, "Prints a terse error message without showing the code on that line and the location in that line.");
 		print_usage_line(0, "");
 
+		print_usage_line(1, "-json-errors");
+		print_usage_line(2, "Prints the error messages as json to stderr.");
+		print_usage_line(0, "");
+
 		print_usage_line(1, "-error-pos-style:<string>");
 		print_usage_line(2, "Available options:");
 		print_usage_line(3, "-error-pos-style:unix      file/path:45:3:");
@@ -2095,7 +2105,7 @@ gb_internal void print_show_unused(Checker *c) {
 		array_add(&unused, e);
 	}
 
-	gb_sort_array(unused.data, unused.count, cmp_entities_for_printing);
+	array_sort(unused, cmp_entities_for_printing);
 
 	print_usage_line(0, "Unused Package Declarations");
 
@@ -2680,6 +2690,7 @@ int main(int arg_count, char const **arg_ptr) {
 	}
 
 	if (any_errors()) {
+		print_all_errors();
 		return 1;
 	}
 
@@ -2691,6 +2702,7 @@ int main(int arg_count, char const **arg_ptr) {
 
 	check_parsed_files(checker);
 	if (any_errors()) {
+		print_all_errors();
 		return 1;
 	}
 

src/parser.cpp

@@ -1484,7 +1484,7 @@ gb_internal Token expect_token(AstFile *f, TokenKind kind) {
 		String p = token_to_string(prev);
 		syntax_error(f->curr_token, "Expected '%.*s', got '%.*s'", LIT(c), LIT(p));
 		if (prev.kind == Token_EOF) {
-			gb_exit(1);
+			exit_with_errors();
 		}
 	}
 
@@ -6177,7 +6177,7 @@ gb_internal ParseFileError process_imported_file(Parser *p, ImportedFile importe
 		if (err == ParseFile_EmptyFile) {
 			if (fi.fullpath == p->init_fullpath) {
 				syntax_error(pos, "Initial file is empty - %.*s\n", LIT(p->init_fullpath));
-				gb_exit(1);
+				exit_with_errors();
 			}
 		} else {
 			switch (err) {

src/string.cpp

@@ -89,7 +89,6 @@ gb_internal char *alloc_cstring(gbAllocator a, String s) {
 }
 
 
-
 gb_internal gb_inline bool str_eq_ignore_case(String const &a, String const &b) {
 	if (a.len == b.len) {
 		for (isize i = 0; i < a.len; i++) {