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https://github.com/ziglang/zig.git
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give std.json an API spanking
Avoid Redundant Names in Fully-Qualified Namespaces
This commit is contained in:
Andrew Kelley
parent
7569494b45
commit
e154b62d63
@ -459,7 +459,6 @@ set(ZIG_STAGE2_SOURCES
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lib/std/io/limited_reader.zig
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lib/std/io/seekable_stream.zig
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lib/std/json.zig
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lib/std/json/stringify.zig
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lib/std/leb128.zig
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lib/std/log.zig
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lib/std/macho.zig
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@ -10,8 +10,8 @@
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//! The high-level `stringify` serializes a Zig or `Value` type into JSON.
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const builtin = @import("builtin");
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const testing = @import("std").testing;
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const ArrayList = @import("std").ArrayList;
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const std = @import("std");
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const testing = std.testing;
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test Scanner {
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var scanner = Scanner.initCompleteInput(testing.allocator, "{\"foo\": 123}\n");
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@ -41,11 +41,13 @@ test Value {
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try testing.expectEqualSlices(u8, "goes", parsed.value.object.get("anything").?.string);
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}
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test writeStream {
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var out = ArrayList(u8).init(testing.allocator);
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test Stringify {
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var out: std.io.AllocatingWriter = undefined;
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var write_stream: Stringify = .{
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.writer = out.init(testing.allocator),
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.options = .{ .whitespace = .indent_2 },
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};
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defer out.deinit();
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var write_stream = writeStream(out.writer(), .{ .whitespace = .indent_2 });
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defer write_stream.deinit();
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try write_stream.beginObject();
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try write_stream.objectField("foo");
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try write_stream.write(123);
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@ -55,16 +57,7 @@ test writeStream {
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\\ "foo": 123
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\\}
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;
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try testing.expectEqualSlices(u8, expected, out.items);
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}
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test stringify {
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var out = ArrayList(u8).init(testing.allocator);
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defer out.deinit();
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const T = struct { a: i32, b: []const u8 };
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try stringify(T{ .a = 123, .b = "xy" }, .{}, out.writer());
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try testing.expectEqualSlices(u8, "{\"a\":123,\"b\":\"xy\"}", out.items);
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try testing.expectEqualSlices(u8, expected, out.getWritten());
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}
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pub const ObjectMap = @import("json/dynamic.zig").ObjectMap;
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@ -99,20 +92,49 @@ pub const innerParseFromValue = @import("json/static.zig").innerParseFromValue;
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pub const ParseError = @import("json/static.zig").ParseError;
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pub const ParseFromValueError = @import("json/static.zig").ParseFromValueError;
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pub const StringifyOptions = @import("json/stringify.zig").StringifyOptions;
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pub const stringify = @import("json/stringify.zig").stringify;
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pub const stringifyMaxDepth = @import("json/stringify.zig").stringifyMaxDepth;
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pub const stringifyArbitraryDepth = @import("json/stringify.zig").stringifyArbitraryDepth;
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pub const stringifyAlloc = @import("json/stringify.zig").stringifyAlloc;
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pub const writeStream = @import("json/stringify.zig").writeStream;
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pub const writeStreamMaxDepth = @import("json/stringify.zig").writeStreamMaxDepth;
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pub const writeStreamArbitraryDepth = @import("json/stringify.zig").writeStreamArbitraryDepth;
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pub const WriteStream = @import("json/stringify.zig").WriteStream;
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pub const encodeJsonString = @import("json/stringify.zig").encodeJsonString;
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pub const encodeJsonStringChars = @import("json/stringify.zig").encodeJsonStringChars;
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pub const Stringify = @import("json/Stringify.zig");
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pub const Formatter = @import("json/fmt.zig").Formatter;
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pub const fmt = @import("json/fmt.zig").fmt;
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/// Returns a formatter that formats the given value using stringify.
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pub fn fmt(value: anytype, options: Stringify.Options) Formatter(@TypeOf(value)) {
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return Formatter(@TypeOf(value)){ .value = value, .options = options };
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}
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test fmt {
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const expectFmt = std.testing.expectFmt;
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try expectFmt("123", "{}", .{fmt(@as(u32, 123), .{})});
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try expectFmt(
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\\{"num":927,"msg":"hello","sub":{"mybool":true}}
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, "{}", .{fmt(struct {
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num: u32,
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msg: []const u8,
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sub: struct {
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mybool: bool,
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},
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}{
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.num = 927,
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.msg = "hello",
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.sub = .{ .mybool = true },
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}, .{})});
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}
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/// Formats the given value using stringify.
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pub fn Formatter(comptime T: type) type {
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return struct {
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value: T,
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options: Stringify.Options,
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pub fn format(
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self: @This(),
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comptime fmt_spec: []const u8,
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options: std.fmt.FormatOptions,
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writer: *std.io.BufferedWriter,
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) !void {
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_ = fmt_spec;
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_ = options;
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try Stringify.value(self.value, self.options, writer);
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}
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};
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}
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test {
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_ = @import("json/test.zig");
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@ -120,6 +142,6 @@ test {
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_ = @import("json/dynamic.zig");
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_ = @import("json/hashmap.zig");
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_ = @import("json/static.zig");
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_ = @import("json/stringify.zig");
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_ = Stringify;
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_ = @import("json/JSONTestSuite_test.zig");
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}
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1048
lib/std/json/Stringify.zig
Normal file
1048
lib/std/json/Stringify.zig
Normal file
File diff suppressed because it is too large
Load Diff
@ -4,9 +4,7 @@ const ArenaAllocator = std.heap.ArenaAllocator;
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const ArrayList = std.ArrayList;
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const StringArrayHashMap = std.StringArrayHashMap;
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const Allocator = std.mem.Allocator;
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const StringifyOptions = @import("./stringify.zig").StringifyOptions;
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const stringify = @import("./stringify.zig").stringify;
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const json = std.json;
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const ParseOptions = @import("./static.zig").ParseOptions;
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const ParseError = @import("./static.zig").ParseError;
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@ -52,12 +50,11 @@ pub const Value = union(enum) {
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}
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}
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pub fn dump(self: Value) void {
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std.debug.lockStdErr();
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pub fn dump(v: Value) void {
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var bw = std.debug.lockStdErr2();
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defer std.debug.unlockStdErr();
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const stderr = std.io.getStdErr().writer();
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stringify(self, .{}, stderr) catch return;
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json.Stringify.value(v, .{}, &bw) catch return;
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}
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pub fn jsonStringify(value: @This(), jws: anytype) !void {
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@ -1,4 +1,5 @@
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const std = @import("std");
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const json = std.json;
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const mem = std.mem;
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const testing = std.testing;
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const ArenaAllocator = std.heap.ArenaAllocator;
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@ -70,13 +71,11 @@ test "json.parser.dynamic" {
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try testing.expect(mem.eql(u8, large_int.number_string, "18446744073709551615"));
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}
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const writeStream = @import("./stringify.zig").writeStream;
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test "write json then parse it" {
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var out_buffer: [1000]u8 = undefined;
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var fixed_buffer_stream = std.io.fixedBufferStream(&out_buffer);
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const out_stream = fixed_buffer_stream.writer();
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var jw = writeStream(out_stream, .{});
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var fixed_writer: std.io.BufferedWriter = undefined;
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fixed_writer.initFixed(&out_buffer);
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var jw: json.Stringify = .{ .writer = &fixed_writer, .options = .{} };
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defer jw.deinit();
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try jw.beginObject();
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@ -101,8 +100,8 @@ test "write json then parse it" {
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try jw.endObject();
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fixed_buffer_stream = std.io.fixedBufferStream(fixed_buffer_stream.getWritten());
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var json_reader = jsonReader(testing.allocator, fixed_buffer_stream.reader());
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var fbs: std.io.FixedBufferStream = .{ .buffer = fixed_writer.getWritten() };
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var json_reader = jsonReader(testing.allocator, fbs.reader());
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defer json_reader.deinit();
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var parsed = try parseFromTokenSource(Value, testing.allocator, &json_reader, .{});
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defer parsed.deinit();
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@ -242,9 +241,10 @@ test "Value.jsonStringify" {
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.{ .object = obj },
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};
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var buffer: [0x1000]u8 = undefined;
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var fbs = std.io.fixedBufferStream(&buffer);
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var fixed_writer: std.io.BufferedWriter = undefined;
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fixed_writer.initFixed(&buffer);
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var jw = writeStream(fbs.writer(), .{ .whitespace = .indent_1 });
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var jw: json.Stringify = .{ .writer = &fixed_writer, .options = .{ .whitespace = .indent_1 } };
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defer jw.deinit();
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try jw.write(array);
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@ -266,7 +266,7 @@ test "Value.jsonStringify" {
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\\ }
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\\]
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;
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try testing.expectEqualSlices(u8, expected, fbs.getWritten());
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try testing.expectEqualStrings(expected, fixed_writer.getWritten());
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}
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test "parseFromValue(std.json.Value,...)" {
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@ -1,46 +0,0 @@
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const std = @import("std");
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const stringify = @import("stringify.zig").stringify;
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const StringifyOptions = @import("stringify.zig").StringifyOptions;
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/// Returns a formatter that formats the given value using stringify.
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pub fn fmt(value: anytype, options: StringifyOptions) Formatter(@TypeOf(value)) {
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return Formatter(@TypeOf(value)){ .value = value, .options = options };
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}
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/// Formats the given value using stringify.
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pub fn Formatter(comptime T: type) type {
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return struct {
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value: T,
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options: StringifyOptions,
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pub fn format(
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self: @This(),
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comptime fmt_spec: []const u8,
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options: std.fmt.FormatOptions,
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writer: anytype,
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) !void {
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_ = fmt_spec;
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_ = options;
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try stringify(self.value, self.options, writer);
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}
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};
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}
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test fmt {
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const expectFmt = std.testing.expectFmt;
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try expectFmt("123", "{}", .{fmt(@as(u32, 123), .{})});
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try expectFmt(
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\\{"num":927,"msg":"hello","sub":{"mybool":true}}
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, "{}", .{fmt(struct {
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num: u32,
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msg: []const u8,
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sub: struct {
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mybool: bool,
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},
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}{
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.num = 927,
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.msg = "hello",
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.sub = .{ .mybool = true },
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}, .{})});
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}
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@ -1,4 +1,5 @@
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const std = @import("std");
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const json = std.json;
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const testing = std.testing;
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const ArrayHashMap = @import("hashmap.zig").ArrayHashMap;
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@ -7,7 +8,6 @@ const parseFromSlice = @import("static.zig").parseFromSlice;
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const parseFromSliceLeaky = @import("static.zig").parseFromSliceLeaky;
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const parseFromTokenSource = @import("static.zig").parseFromTokenSource;
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const parseFromValue = @import("static.zig").parseFromValue;
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const stringifyAlloc = @import("stringify.zig").stringifyAlloc;
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const Value = @import("dynamic.zig").Value;
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const jsonReader = @import("./scanner.zig").reader;
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@ -89,7 +89,7 @@ test "stringify json hashmap" {
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var value = ArrayHashMap(T){};
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defer value.deinit(testing.allocator);
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{
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const doc = try stringifyAlloc(testing.allocator, value, .{});
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const doc = try json.Stringify.valueAlloc(testing.allocator, value, .{});
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defer testing.allocator.free(doc);
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try testing.expectEqualStrings("{}", doc);
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}
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@ -98,7 +98,7 @@ test "stringify json hashmap" {
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try value.map.put(testing.allocator, "xyz", .{ .i = 1, .s = "w" });
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{
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const doc = try stringifyAlloc(testing.allocator, value, .{});
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const doc = try json.Stringify.valueAlloc(testing.allocator, value, .{});
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defer testing.allocator.free(doc);
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try testing.expectEqualStrings(
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\\{"abc":{"i":0,"s":"d"},"xyz":{"i":1,"s":"w"}}
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@ -107,7 +107,7 @@ test "stringify json hashmap" {
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try testing.expect(value.map.swapRemove("abc"));
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{
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const doc = try stringifyAlloc(testing.allocator, value, .{});
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const doc = try json.Stringify.valueAlloc(testing.allocator, value, .{});
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defer testing.allocator.free(doc);
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try testing.expectEqualStrings(
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\\{"xyz":{"i":1,"s":"w"}}
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@ -116,7 +116,7 @@ test "stringify json hashmap" {
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try testing.expect(value.map.swapRemove("xyz"));
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{
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const doc = try stringifyAlloc(testing.allocator, value, .{});
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const doc = try json.Stringify.valueAlloc(testing.allocator, value, .{});
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defer testing.allocator.free(doc);
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try testing.expectEqualStrings("{}", doc);
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}
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@ -129,7 +129,7 @@ test "stringify json hashmap whitespace" {
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try value.map.put(testing.allocator, "xyz", .{ .i = 1, .s = "w" });
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{
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const doc = try stringifyAlloc(testing.allocator, value, .{ .whitespace = .indent_2 });
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const doc = try json.Stringify.valueAlloc(testing.allocator, value, .{ .whitespace = .indent_2 });
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defer testing.allocator.free(doc);
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try testing.expectEqualStrings(
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\\{
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@ -1,770 +0,0 @@
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const std = @import("std");
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const assert = std.debug.assert;
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const Allocator = std.mem.Allocator;
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const ArrayList = std.ArrayList;
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const BitStack = std.BitStack;
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const OBJECT_MODE = 0;
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const ARRAY_MODE = 1;
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pub const StringifyOptions = struct {
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/// Controls the whitespace emitted.
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/// The default `.minified` is a compact encoding with no whitespace between tokens.
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/// Any setting other than `.minified` will use newlines, indentation, and a space after each ':'.
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/// `.indent_1` means 1 space for each indentation level, `.indent_2` means 2 spaces, etc.
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/// `.indent_tab` uses a tab for each indentation level.
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whitespace: enum {
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minified,
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indent_1,
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indent_2,
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indent_3,
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indent_4,
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indent_8,
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indent_tab,
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} = .minified,
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/// Should optional fields with null value be written?
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emit_null_optional_fields: bool = true,
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/// Arrays/slices of u8 are typically encoded as JSON strings.
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/// This option emits them as arrays of numbers instead.
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/// Does not affect calls to `objectField*()`.
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emit_strings_as_arrays: bool = false,
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/// Should unicode characters be escaped in strings?
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escape_unicode: bool = false,
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/// When true, renders numbers outside the range `+-1<<53` (the precise integer range of f64) as JSON strings in base 10.
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emit_nonportable_numbers_as_strings: bool = false,
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};
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/// Writes the given value to the `std.io.Writer` stream.
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/// See `WriteStream` for how the given value is serialized into JSON.
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/// The maximum nesting depth of the output JSON document is 256.
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/// See also `stringifyMaxDepth` and `stringifyArbitraryDepth`.
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pub fn stringify(
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value: anytype,
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options: StringifyOptions,
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out_stream: anytype,
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) @TypeOf(out_stream).Error!void {
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var jw = writeStream(out_stream, options);
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defer jw.deinit();
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try jw.write(value);
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}
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/// Like `stringify` with configurable nesting depth.
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/// `max_depth` is rounded up to the nearest multiple of 8.
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/// Give `null` for `max_depth` to disable some safety checks and allow arbitrary nesting depth.
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/// See `writeStreamMaxDepth` for more info.
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pub fn stringifyMaxDepth(
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value: anytype,
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options: StringifyOptions,
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out_stream: anytype,
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comptime max_depth: ?usize,
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) @TypeOf(out_stream).Error!void {
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var jw = writeStreamMaxDepth(out_stream, options, max_depth);
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try jw.write(value);
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}
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/// Like `stringify` but takes an allocator to facilitate safety checks while allowing arbitrary nesting depth.
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/// These safety checks can be helpful when debugging custom `jsonStringify` implementations;
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/// See `WriteStream`.
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pub fn stringifyArbitraryDepth(
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allocator: Allocator,
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value: anytype,
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options: StringifyOptions,
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out_stream: anytype,
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) WriteStream(@TypeOf(out_stream), .checked_to_arbitrary_depth).Error!void {
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var jw = writeStreamArbitraryDepth(allocator, out_stream, options);
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defer jw.deinit();
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try jw.write(value);
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}
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/// Calls `stringifyArbitraryDepth` and stores the result in dynamically allocated memory
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/// instead of taking a `std.io.Writer`.
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///
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/// Caller owns returned memory.
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pub fn stringifyAlloc(
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allocator: Allocator,
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value: anytype,
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options: StringifyOptions,
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) error{OutOfMemory}![]u8 {
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var list = std.ArrayList(u8).init(allocator);
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errdefer list.deinit();
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try stringifyArbitraryDepth(allocator, value, options, list.writer());
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return list.toOwnedSlice();
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}
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/// See `WriteStream` for documentation.
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/// Equivalent to calling `writeStreamMaxDepth` with a depth of `256`.
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///
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/// The caller does *not* need to call `deinit()` on the returned object.
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pub fn writeStream(
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out_stream: anytype,
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options: StringifyOptions,
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) WriteStream(@TypeOf(out_stream), .{ .checked_to_fixed_depth = 256 }) {
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return writeStreamMaxDepth(out_stream, options, 256);
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}
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/// See `WriteStream` for documentation.
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/// The returned object includes 1 bit of size per `max_depth` to enable safety checks on the order of method calls;
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/// see the grammar in the `WriteStream` documentation.
|
||||
/// `max_depth` is rounded up to the nearest multiple of 8.
|
||||
/// If the nesting depth exceeds `max_depth`, it is detectable illegal behavior.
|
||||
/// Give `null` for `max_depth` to disable safety checks for the grammar and allow arbitrary nesting depth.
|
||||
/// In `ReleaseFast` and `ReleaseSmall`, `max_depth` is ignored, effectively equivalent to passing `null`.
|
||||
/// Alternatively, see `writeStreamArbitraryDepth` to do safety checks to arbitrary depth.
|
||||
///
|
||||
/// The caller does *not* need to call `deinit()` on the returned object.
|
||||
pub fn writeStreamMaxDepth(
|
||||
out_stream: anytype,
|
||||
options: StringifyOptions,
|
||||
comptime max_depth: ?usize,
|
||||
) WriteStream(
|
||||
@TypeOf(out_stream),
|
||||
if (max_depth) |d| .{ .checked_to_fixed_depth = d } else .assumed_correct,
|
||||
) {
|
||||
return WriteStream(
|
||||
@TypeOf(out_stream),
|
||||
if (max_depth) |d| .{ .checked_to_fixed_depth = d } else .assumed_correct,
|
||||
).init(undefined, out_stream, options);
|
||||
}
|
||||
|
||||
/// See `WriteStream` for documentation.
|
||||
/// This version of the write stream enables safety checks to arbitrarily deep nesting levels
|
||||
/// by using the given allocator.
|
||||
/// The caller should call `deinit()` on the returned object to free allocated memory.
|
||||
///
|
||||
/// In `ReleaseFast` and `ReleaseSmall` mode, this function is effectively equivalent to calling `writeStreamMaxDepth(..., null)`;
|
||||
/// in those build modes, the allocator is *not used*.
|
||||
pub fn writeStreamArbitraryDepth(
|
||||
allocator: Allocator,
|
||||
out_stream: anytype,
|
||||
options: StringifyOptions,
|
||||
) WriteStream(@TypeOf(out_stream), .checked_to_arbitrary_depth) {
|
||||
return WriteStream(@TypeOf(out_stream), .checked_to_arbitrary_depth).init(allocator, out_stream, options);
|
||||
}
|
||||
|
||||
/// Writes JSON ([RFC8259](https://tools.ietf.org/html/rfc8259)) formatted data
|
||||
/// to a stream.
|
||||
///
|
||||
/// The sequence of method calls to write JSON content must follow this grammar:
|
||||
/// ```
|
||||
/// <once> = <value>
|
||||
/// <value> =
|
||||
/// | <object>
|
||||
/// | <array>
|
||||
/// | write
|
||||
/// | print
|
||||
/// | <writeRawStream>
|
||||
/// <object> = beginObject ( <field> <value> )* endObject
|
||||
/// <field> = objectField | objectFieldRaw | <objectFieldRawStream>
|
||||
/// <array> = beginArray ( <value> )* endArray
|
||||
/// <writeRawStream> = beginWriteRaw ( stream.writeAll )* endWriteRaw
|
||||
/// <objectFieldRawStream> = beginObjectFieldRaw ( stream.writeAll )* endObjectFieldRaw
|
||||
/// ```
|
||||
///
|
||||
/// The `safety_checks_hint` parameter determines how much memory is used to enable assertions that the above grammar is being followed,
|
||||
/// e.g. tripping an assertion rather than allowing `endObject` to emit the final `}` in `[[[]]}`.
|
||||
/// "Depth" in this context means the depth of nested `[]` or `{}` expressions
|
||||
/// (or equivalently the amount of recursion on the `<value>` grammar expression above).
|
||||
/// For example, emitting the JSON `[[[]]]` requires a depth of 3.
|
||||
/// If `.checked_to_fixed_depth` is used, there is additionally an assertion that the nesting depth never exceeds the given limit.
|
||||
/// `.checked_to_arbitrary_depth` requires a runtime allocator for the memory.
|
||||
/// `.checked_to_fixed_depth` embeds the storage required in the `WriteStream` struct.
|
||||
/// `.assumed_correct` requires no space and performs none of these assertions.
|
||||
/// In `ReleaseFast` and `ReleaseSmall` mode, the given `safety_checks_hint` is ignored and is always treated as `.assumed_correct`.
|
||||
pub fn WriteStream(
|
||||
comptime OutStream: type,
|
||||
comptime safety_checks_hint: union(enum) {
|
||||
checked_to_arbitrary_depth,
|
||||
checked_to_fixed_depth: usize, // Rounded up to the nearest multiple of 8.
|
||||
assumed_correct,
|
||||
},
|
||||
) type {
|
||||
return struct {
|
||||
const Self = @This();
|
||||
const build_mode_has_safety = switch (@import("builtin").mode) {
|
||||
.Debug, .ReleaseSafe => true,
|
||||
.ReleaseFast, .ReleaseSmall => false,
|
||||
};
|
||||
const safety_checks: @TypeOf(safety_checks_hint) = if (build_mode_has_safety)
|
||||
safety_checks_hint
|
||||
else
|
||||
.assumed_correct;
|
||||
|
||||
pub const Stream = OutStream;
|
||||
pub const Error = switch (safety_checks) {
|
||||
.checked_to_arbitrary_depth => Stream.Error || error{OutOfMemory},
|
||||
.checked_to_fixed_depth, .assumed_correct => Stream.Error,
|
||||
};
|
||||
|
||||
options: StringifyOptions,
|
||||
|
||||
stream: OutStream,
|
||||
indent_level: usize = 0,
|
||||
next_punctuation: enum {
|
||||
the_beginning,
|
||||
none,
|
||||
comma,
|
||||
colon,
|
||||
} = .the_beginning,
|
||||
|
||||
nesting_stack: switch (safety_checks) {
|
||||
.checked_to_arbitrary_depth => BitStack,
|
||||
.checked_to_fixed_depth => |fixed_buffer_size| [(fixed_buffer_size + 7) >> 3]u8,
|
||||
.assumed_correct => void,
|
||||
},
|
||||
|
||||
raw_streaming_mode: if (build_mode_has_safety)
|
||||
enum { none, value, objectField }
|
||||
else
|
||||
void = if (build_mode_has_safety) .none else {},
|
||||
|
||||
pub fn init(safety_allocator: Allocator, stream: OutStream, options: StringifyOptions) Self {
|
||||
return .{
|
||||
.options = options,
|
||||
.stream = stream,
|
||||
.nesting_stack = switch (safety_checks) {
|
||||
.checked_to_arbitrary_depth => BitStack.init(safety_allocator),
|
||||
.checked_to_fixed_depth => |fixed_buffer_size| [_]u8{0} ** ((fixed_buffer_size + 7) >> 3),
|
||||
.assumed_correct => {},
|
||||
},
|
||||
};
|
||||
}
|
||||
|
||||
/// Only necessary with .checked_to_arbitrary_depth.
|
||||
pub fn deinit(self: *Self) void {
|
||||
switch (safety_checks) {
|
||||
.checked_to_arbitrary_depth => self.nesting_stack.deinit(),
|
||||
.checked_to_fixed_depth, .assumed_correct => {},
|
||||
}
|
||||
self.* = undefined;
|
||||
}
|
||||
|
||||
pub fn beginArray(self: *Self) Error!void {
|
||||
if (build_mode_has_safety) assert(self.raw_streaming_mode == .none);
|
||||
try self.valueStart();
|
||||
try self.stream.writeByte('[');
|
||||
try self.pushIndentation(ARRAY_MODE);
|
||||
self.next_punctuation = .none;
|
||||
}
|
||||
|
||||
pub fn beginObject(self: *Self) Error!void {
|
||||
if (build_mode_has_safety) assert(self.raw_streaming_mode == .none);
|
||||
try self.valueStart();
|
||||
try self.stream.writeByte('{');
|
||||
try self.pushIndentation(OBJECT_MODE);
|
||||
self.next_punctuation = .none;
|
||||
}
|
||||
|
||||
pub fn endArray(self: *Self) Error!void {
|
||||
if (build_mode_has_safety) assert(self.raw_streaming_mode == .none);
|
||||
self.popIndentation(ARRAY_MODE);
|
||||
switch (self.next_punctuation) {
|
||||
.none => {},
|
||||
.comma => {
|
||||
try self.indent();
|
||||
},
|
||||
.the_beginning, .colon => unreachable,
|
||||
}
|
||||
try self.stream.writeByte(']');
|
||||
self.valueDone();
|
||||
}
|
||||
|
||||
pub fn endObject(self: *Self) Error!void {
|
||||
if (build_mode_has_safety) assert(self.raw_streaming_mode == .none);
|
||||
self.popIndentation(OBJECT_MODE);
|
||||
switch (self.next_punctuation) {
|
||||
.none => {},
|
||||
.comma => {
|
||||
try self.indent();
|
||||
},
|
||||
.the_beginning, .colon => unreachable,
|
||||
}
|
||||
try self.stream.writeByte('}');
|
||||
self.valueDone();
|
||||
}
|
||||
|
||||
fn pushIndentation(self: *Self, mode: u1) !void {
|
||||
switch (safety_checks) {
|
||||
.checked_to_arbitrary_depth => {
|
||||
try self.nesting_stack.push(mode);
|
||||
self.indent_level += 1;
|
||||
},
|
||||
.checked_to_fixed_depth => {
|
||||
BitStack.pushWithStateAssumeCapacity(&self.nesting_stack, &self.indent_level, mode);
|
||||
},
|
||||
.assumed_correct => {
|
||||
self.indent_level += 1;
|
||||
},
|
||||
}
|
||||
}
|
||||
fn popIndentation(self: *Self, assert_its_this_one: u1) void {
|
||||
switch (safety_checks) {
|
||||
.checked_to_arbitrary_depth => {
|
||||
assert(self.nesting_stack.pop() == assert_its_this_one);
|
||||
self.indent_level -= 1;
|
||||
},
|
||||
.checked_to_fixed_depth => {
|
||||
assert(BitStack.popWithState(&self.nesting_stack, &self.indent_level) == assert_its_this_one);
|
||||
},
|
||||
.assumed_correct => {
|
||||
self.indent_level -= 1;
|
||||
},
|
||||
}
|
||||
}
|
||||
|
||||
fn indent(self: *Self) !void {
|
||||
var char: u8 = ' ';
|
||||
const n_chars = switch (self.options.whitespace) {
|
||||
.minified => return,
|
||||
.indent_1 => 1 * self.indent_level,
|
||||
.indent_2 => 2 * self.indent_level,
|
||||
.indent_3 => 3 * self.indent_level,
|
||||
.indent_4 => 4 * self.indent_level,
|
||||
.indent_8 => 8 * self.indent_level,
|
||||
.indent_tab => blk: {
|
||||
char = '\t';
|
||||
break :blk self.indent_level;
|
||||
},
|
||||
};
|
||||
try self.stream.writeByte('\n');
|
||||
try self.stream.writeByteNTimes(char, n_chars);
|
||||
}
|
||||
|
||||
fn valueStart(self: *Self) !void {
|
||||
if (self.isObjectKeyExpected()) |is_it| assert(!is_it); // Call objectField*(), not write(), for object keys.
|
||||
return self.valueStartAssumeTypeOk();
|
||||
}
|
||||
fn objectFieldStart(self: *Self) !void {
|
||||
if (self.isObjectKeyExpected()) |is_it| assert(is_it); // Expected write(), not objectField*().
|
||||
return self.valueStartAssumeTypeOk();
|
||||
}
|
||||
fn valueStartAssumeTypeOk(self: *Self) !void {
|
||||
assert(!self.isComplete()); // JSON document already complete.
|
||||
switch (self.next_punctuation) {
|
||||
.the_beginning => {
|
||||
// No indentation for the very beginning.
|
||||
},
|
||||
.none => {
|
||||
// First item in a container.
|
||||
try self.indent();
|
||||
},
|
||||
.comma => {
|
||||
// Subsequent item in a container.
|
||||
try self.stream.writeByte(',');
|
||||
try self.indent();
|
||||
},
|
||||
.colon => {
|
||||
try self.stream.writeByte(':');
|
||||
if (self.options.whitespace != .minified) {
|
||||
try self.stream.writeByte(' ');
|
||||
}
|
||||
},
|
||||
}
|
||||
}
|
||||
fn valueDone(self: *Self) void {
|
||||
self.next_punctuation = .comma;
|
||||
}
|
||||
|
||||
// Only when safety is enabled:
|
||||
fn isObjectKeyExpected(self: *const Self) ?bool {
|
||||
switch (safety_checks) {
|
||||
.checked_to_arbitrary_depth => return self.indent_level > 0 and
|
||||
self.nesting_stack.peek() == OBJECT_MODE and
|
||||
self.next_punctuation != .colon,
|
||||
.checked_to_fixed_depth => return self.indent_level > 0 and
|
||||
BitStack.peekWithState(&self.nesting_stack, self.indent_level) == OBJECT_MODE and
|
||||
self.next_punctuation != .colon,
|
||||
.assumed_correct => return null,
|
||||
}
|
||||
}
|
||||
fn isComplete(self: *const Self) bool {
|
||||
return self.indent_level == 0 and self.next_punctuation == .comma;
|
||||
}
|
||||
|
||||
/// An alternative to calling `write` that formats a value with `std.fmt`.
|
||||
/// This function does the usual punctuation and indentation formatting
|
||||
/// assuming the resulting formatted string represents a single complete value;
|
||||
/// e.g. `"1"`, `"[]"`, `"[1,2]"`, not `"1,2"`.
|
||||
/// This function may be useful for doing your own number formatting.
|
||||
pub fn print(self: *Self, comptime fmt: []const u8, args: anytype) Error!void {
|
||||
if (build_mode_has_safety) assert(self.raw_streaming_mode == .none);
|
||||
try self.valueStart();
|
||||
try self.stream.print(fmt, args);
|
||||
self.valueDone();
|
||||
}
|
||||
|
||||
/// An alternative to calling `write` that allows you to write directly to the `.stream` field, e.g. with `.stream.writeAll()`.
|
||||
/// Call `beginWriteRaw()`, then write a complete value (including any quotes if necessary) directly to the `.stream` field,
|
||||
/// then call `endWriteRaw()`.
|
||||
/// This can be useful for streaming very long strings into the output without needing it all buffered in memory.
|
||||
pub fn beginWriteRaw(self: *Self) !void {
|
||||
if (build_mode_has_safety) {
|
||||
assert(self.raw_streaming_mode == .none);
|
||||
self.raw_streaming_mode = .value;
|
||||
}
|
||||
try self.valueStart();
|
||||
}
|
||||
|
||||
/// See `beginWriteRaw`.
|
||||
pub fn endWriteRaw(self: *Self) void {
|
||||
if (build_mode_has_safety) {
|
||||
assert(self.raw_streaming_mode == .value);
|
||||
self.raw_streaming_mode = .none;
|
||||
}
|
||||
self.valueDone();
|
||||
}
|
||||
|
||||
/// See `WriteStream` for when to call this method.
|
||||
/// `key` is the string content of the property name.
|
||||
/// Surrounding quotes will be added and any special characters will be escaped.
|
||||
/// See also `objectFieldRaw`.
|
||||
pub fn objectField(self: *Self, key: []const u8) Error!void {
|
||||
if (build_mode_has_safety) assert(self.raw_streaming_mode == .none);
|
||||
try self.objectFieldStart();
|
||||
try encodeJsonString(key, self.options, self.stream);
|
||||
self.next_punctuation = .colon;
|
||||
}
|
||||
/// See `WriteStream` for when to call this method.
|
||||
/// `quoted_key` is the complete bytes of the key including quotes and any necessary escape sequences.
|
||||
/// A few assertions are performed on the given value to ensure that the caller of this function understands the API contract.
|
||||
/// See also `objectField`.
|
||||
pub fn objectFieldRaw(self: *Self, quoted_key: []const u8) Error!void {
|
||||
if (build_mode_has_safety) assert(self.raw_streaming_mode == .none);
|
||||
assert(quoted_key.len >= 2 and quoted_key[0] == '"' and quoted_key[quoted_key.len - 1] == '"'); // quoted_key should be "quoted".
|
||||
try self.objectFieldStart();
|
||||
try self.stream.writeAll(quoted_key);
|
||||
self.next_punctuation = .colon;
|
||||
}
|
||||
|
||||
/// In the rare case that you need to write very long object field names,
|
||||
/// this is an alternative to `objectField` and `objectFieldRaw` that allows you to write directly to the `.stream` field
|
||||
/// similar to `beginWriteRaw`.
|
||||
/// Call `endObjectFieldRaw()` when you're done.
|
||||
pub fn beginObjectFieldRaw(self: *Self) !void {
|
||||
if (build_mode_has_safety) {
|
||||
assert(self.raw_streaming_mode == .none);
|
||||
self.raw_streaming_mode = .objectField;
|
||||
}
|
||||
try self.objectFieldStart();
|
||||
}
|
||||
|
||||
/// See `beginObjectFieldRaw`.
|
||||
pub fn endObjectFieldRaw(self: *Self) void {
|
||||
if (build_mode_has_safety) {
|
||||
assert(self.raw_streaming_mode == .objectField);
|
||||
self.raw_streaming_mode = .none;
|
||||
}
|
||||
self.next_punctuation = .colon;
|
||||
}
|
||||
|
||||
/// Renders the given Zig value as JSON.
|
||||
///
|
||||
/// Supported types:
|
||||
/// * Zig `bool` -> JSON `true` or `false`.
|
||||
/// * Zig `?T` -> `null` or the rendering of `T`.
|
||||
/// * Zig `i32`, `u64`, etc. -> JSON number or string.
|
||||
/// * When option `emit_nonportable_numbers_as_strings` is true, if the value is outside the range `+-1<<53` (the precise integer range of f64), it is rendered as a JSON string in base 10. Otherwise, it is rendered as JSON number.
|
||||
/// * Zig floats -> JSON number or string.
|
||||
/// * If the value cannot be precisely represented by an f64, it is rendered as a JSON string. Otherwise, it is rendered as JSON number.
|
||||
/// * TODO: Float rendering will likely change in the future, e.g. to remove the unnecessary "e+00".
|
||||
/// * Zig `[]const u8`, `[]u8`, `*[N]u8`, `@Vector(N, u8)`, and similar -> JSON string.
|
||||
/// * See `StringifyOptions.emit_strings_as_arrays`.
|
||||
/// * If the content is not valid UTF-8, rendered as an array of numbers instead.
|
||||
/// * Zig `[]T`, `[N]T`, `*[N]T`, `@Vector(N, T)`, and similar -> JSON array of the rendering of each item.
|
||||
/// * Zig tuple -> JSON array of the rendering of each item.
|
||||
/// * Zig `struct` -> JSON object with each field in declaration order.
|
||||
/// * If the struct declares a method `pub fn jsonStringify(self: *@This(), jw: anytype) !void`, it is called to do the serialization instead of the default behavior. The given `jw` is a pointer to this `WriteStream`. See `std.json.Value` for an example.
|
||||
/// * See `StringifyOptions.emit_null_optional_fields`.
|
||||
/// * Zig `union(enum)` -> JSON object with one field named for the active tag and a value representing the payload.
|
||||
/// * If the payload is `void`, then the emitted value is `{}`.
|
||||
/// * If the union declares a method `pub fn jsonStringify(self: *@This(), jw: anytype) !void`, it is called to do the serialization instead of the default behavior. The given `jw` is a pointer to this `WriteStream`.
|
||||
/// * Zig `enum` -> JSON string naming the active tag.
|
||||
/// * If the enum declares a method `pub fn jsonStringify(self: *@This(), jw: anytype) !void`, it is called to do the serialization instead of the default behavior. The given `jw` is a pointer to this `WriteStream`.
|
||||
/// * If the enum is non-exhaustive, unnamed values are rendered as integers.
|
||||
/// * Zig untyped enum literal -> JSON string naming the active tag.
|
||||
/// * Zig error -> JSON string naming the error.
|
||||
/// * Zig `*T` -> the rendering of `T`. Note there is no guard against circular-reference infinite recursion.
|
||||
///
|
||||
/// See also alternative functions `print` and `beginWriteRaw`.
|
||||
/// For writing object field names, use `objectField` instead.
|
||||
pub fn write(self: *Self, value: anytype) Error!void {
|
||||
if (build_mode_has_safety) assert(self.raw_streaming_mode == .none);
|
||||
const T = @TypeOf(value);
|
||||
switch (@typeInfo(T)) {
|
||||
.int => {
|
||||
try self.valueStart();
|
||||
if (self.options.emit_nonportable_numbers_as_strings and
|
||||
(value <= -(1 << 53) or value >= (1 << 53)))
|
||||
{
|
||||
try self.stream.print("\"{}\"", .{value});
|
||||
} else {
|
||||
try self.stream.print("{}", .{value});
|
||||
}
|
||||
self.valueDone();
|
||||
return;
|
||||
},
|
||||
.comptime_int => {
|
||||
return self.write(@as(std.math.IntFittingRange(value, value), value));
|
||||
},
|
||||
.float, .comptime_float => {
|
||||
if (@as(f64, @floatCast(value)) == value) {
|
||||
try self.valueStart();
|
||||
try self.stream.print("{}", .{@as(f64, @floatCast(value))});
|
||||
self.valueDone();
|
||||
return;
|
||||
}
|
||||
try self.valueStart();
|
||||
try self.stream.print("\"{}\"", .{value});
|
||||
self.valueDone();
|
||||
return;
|
||||
},
|
||||
|
||||
.bool => {
|
||||
try self.valueStart();
|
||||
try self.stream.writeAll(if (value) "true" else "false");
|
||||
self.valueDone();
|
||||
return;
|
||||
},
|
||||
.null => {
|
||||
try self.valueStart();
|
||||
try self.stream.writeAll("null");
|
||||
self.valueDone();
|
||||
return;
|
||||
},
|
||||
.optional => {
|
||||
if (value) |payload| {
|
||||
return try self.write(payload);
|
||||
} else {
|
||||
return try self.write(null);
|
||||
}
|
||||
},
|
||||
.@"enum" => |enum_info| {
|
||||
if (std.meta.hasFn(T, "jsonStringify")) {
|
||||
return value.jsonStringify(self);
|
||||
}
|
||||
|
||||
if (!enum_info.is_exhaustive) {
|
||||
inline for (enum_info.fields) |field| {
|
||||
if (value == @field(T, field.name)) {
|
||||
break;
|
||||
}
|
||||
} else {
|
||||
return self.write(@intFromEnum(value));
|
||||
}
|
||||
}
|
||||
|
||||
return self.stringValue(@tagName(value));
|
||||
},
|
||||
.enum_literal => {
|
||||
return self.stringValue(@tagName(value));
|
||||
},
|
||||
.@"union" => {
|
||||
if (std.meta.hasFn(T, "jsonStringify")) {
|
||||
return value.jsonStringify(self);
|
||||
}
|
||||
|
||||
const info = @typeInfo(T).@"union";
|
||||
if (info.tag_type) |UnionTagType| {
|
||||
try self.beginObject();
|
||||
inline for (info.fields) |u_field| {
|
||||
if (value == @field(UnionTagType, u_field.name)) {
|
||||
try self.objectField(u_field.name);
|
||||
if (u_field.type == void) {
|
||||
// void value is {}
|
||||
try self.beginObject();
|
||||
try self.endObject();
|
||||
} else {
|
||||
try self.write(@field(value, u_field.name));
|
||||
}
|
||||
break;
|
||||
}
|
||||
} else {
|
||||
unreachable; // No active tag?
|
||||
}
|
||||
try self.endObject();
|
||||
return;
|
||||
} else {
|
||||
@compileError("Unable to stringify untagged union '" ++ @typeName(T) ++ "'");
|
||||
}
|
||||
},
|
||||
.@"struct" => |S| {
|
||||
if (std.meta.hasFn(T, "jsonStringify")) {
|
||||
return value.jsonStringify(self);
|
||||
}
|
||||
|
||||
if (S.is_tuple) {
|
||||
try self.beginArray();
|
||||
} else {
|
||||
try self.beginObject();
|
||||
}
|
||||
inline for (S.fields) |Field| {
|
||||
// don't include void fields
|
||||
if (Field.type == void) continue;
|
||||
|
||||
var emit_field = true;
|
||||
|
||||
// don't include optional fields that are null when emit_null_optional_fields is set to false
|
||||
if (@typeInfo(Field.type) == .optional) {
|
||||
if (self.options.emit_null_optional_fields == false) {
|
||||
if (@field(value, Field.name) == null) {
|
||||
emit_field = false;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (emit_field) {
|
||||
if (!S.is_tuple) {
|
||||
try self.objectField(Field.name);
|
||||
}
|
||||
try self.write(@field(value, Field.name));
|
||||
}
|
||||
}
|
||||
if (S.is_tuple) {
|
||||
try self.endArray();
|
||||
} else {
|
||||
try self.endObject();
|
||||
}
|
||||
return;
|
||||
},
|
||||
.error_set => return self.stringValue(@errorName(value)),
|
||||
.pointer => |ptr_info| switch (ptr_info.size) {
|
||||
.one => switch (@typeInfo(ptr_info.child)) {
|
||||
.array => {
|
||||
// Coerce `*[N]T` to `[]const T`.
|
||||
const Slice = []const std.meta.Elem(ptr_info.child);
|
||||
return self.write(@as(Slice, value));
|
||||
},
|
||||
else => {
|
||||
return self.write(value.*);
|
||||
},
|
||||
},
|
||||
.many, .slice => {
|
||||
if (ptr_info.size == .many and ptr_info.sentinel() == null)
|
||||
@compileError("unable to stringify type '" ++ @typeName(T) ++ "' without sentinel");
|
||||
const slice = if (ptr_info.size == .many) std.mem.span(value) else value;
|
||||
|
||||
if (ptr_info.child == u8) {
|
||||
// This is a []const u8, or some similar Zig string.
|
||||
if (!self.options.emit_strings_as_arrays and std.unicode.utf8ValidateSlice(slice)) {
|
||||
return self.stringValue(slice);
|
||||
}
|
||||
}
|
||||
|
||||
try self.beginArray();
|
||||
for (slice) |x| {
|
||||
try self.write(x);
|
||||
}
|
||||
try self.endArray();
|
||||
return;
|
||||
},
|
||||
else => @compileError("Unable to stringify type '" ++ @typeName(T) ++ "'"),
|
||||
},
|
||||
.array => {
|
||||
// Coerce `[N]T` to `*const [N]T` (and then to `[]const T`).
|
||||
return self.write(&value);
|
||||
},
|
||||
.vector => |info| {
|
||||
const array: [info.len]info.child = value;
|
||||
return self.write(&array);
|
||||
},
|
||||
else => @compileError("Unable to stringify type '" ++ @typeName(T) ++ "'"),
|
||||
}
|
||||
unreachable;
|
||||
}
|
||||
|
||||
fn stringValue(self: *Self, s: []const u8) !void {
|
||||
try self.valueStart();
|
||||
try encodeJsonString(s, self.options, self.stream);
|
||||
self.valueDone();
|
||||
}
|
||||
};
|
||||
}
|
||||
|
||||
fn outputUnicodeEscape(codepoint: u21, out_stream: anytype) !void {
|
||||
if (codepoint <= 0xFFFF) {
|
||||
// If the character is in the Basic Multilingual Plane (U+0000 through U+FFFF),
|
||||
// then it may be represented as a six-character sequence: a reverse solidus, followed
|
||||
// by the lowercase letter u, followed by four hexadecimal digits that encode the character's code point.
|
||||
try out_stream.writeAll("\\u");
|
||||
try std.fmt.formatIntValue(codepoint, "x", std.fmt.FormatOptions{ .width = 4, .fill = '0' }, out_stream);
|
||||
} else {
|
||||
assert(codepoint <= 0x10FFFF);
|
||||
// To escape an extended character that is not in the Basic Multilingual Plane,
|
||||
// the character is represented as a 12-character sequence, encoding the UTF-16 surrogate pair.
|
||||
const high = @as(u16, @intCast((codepoint - 0x10000) >> 10)) + 0xD800;
|
||||
const low = @as(u16, @intCast(codepoint & 0x3FF)) + 0xDC00;
|
||||
try out_stream.writeAll("\\u");
|
||||
try std.fmt.formatIntValue(high, "x", std.fmt.FormatOptions{ .width = 4, .fill = '0' }, out_stream);
|
||||
try out_stream.writeAll("\\u");
|
||||
try std.fmt.formatIntValue(low, "x", std.fmt.FormatOptions{ .width = 4, .fill = '0' }, out_stream);
|
||||
}
|
||||
}
|
||||
|
||||
fn outputSpecialEscape(c: u8, writer: anytype) !void {
|
||||
switch (c) {
|
||||
'\\' => try writer.writeAll("\\\\"),
|
||||
'\"' => try writer.writeAll("\\\""),
|
||||
0x08 => try writer.writeAll("\\b"),
|
||||
0x0C => try writer.writeAll("\\f"),
|
||||
'\n' => try writer.writeAll("\\n"),
|
||||
'\r' => try writer.writeAll("\\r"),
|
||||
'\t' => try writer.writeAll("\\t"),
|
||||
else => try outputUnicodeEscape(c, writer),
|
||||
}
|
||||
}
|
||||
|
||||
/// Write `string` to `writer` as a JSON encoded string.
|
||||
pub fn encodeJsonString(string: []const u8, options: StringifyOptions, writer: anytype) !void {
|
||||
try writer.writeByte('\"');
|
||||
try encodeJsonStringChars(string, options, writer);
|
||||
try writer.writeByte('\"');
|
||||
}
|
||||
|
||||
/// Write `chars` to `writer` as JSON encoded string characters.
|
||||
pub fn encodeJsonStringChars(chars: []const u8, options: StringifyOptions, writer: anytype) !void {
|
||||
var write_cursor: usize = 0;
|
||||
var i: usize = 0;
|
||||
if (options.escape_unicode) {
|
||||
while (i < chars.len) : (i += 1) {
|
||||
switch (chars[i]) {
|
||||
// normal ascii character
|
||||
0x20...0x21, 0x23...0x5B, 0x5D...0x7E => {},
|
||||
0x00...0x1F, '\\', '\"' => {
|
||||
// Always must escape these.
|
||||
try writer.writeAll(chars[write_cursor..i]);
|
||||
try outputSpecialEscape(chars[i], writer);
|
||||
write_cursor = i + 1;
|
||||
},
|
||||
0x7F...0xFF => {
|
||||
try writer.writeAll(chars[write_cursor..i]);
|
||||
const ulen = std.unicode.utf8ByteSequenceLength(chars[i]) catch unreachable;
|
||||
const codepoint = std.unicode.utf8Decode(chars[i..][0..ulen]) catch unreachable;
|
||||
try outputUnicodeEscape(codepoint, writer);
|
||||
i += ulen - 1;
|
||||
write_cursor = i + 1;
|
||||
},
|
||||
}
|
||||
}
|
||||
} else {
|
||||
while (i < chars.len) : (i += 1) {
|
||||
switch (chars[i]) {
|
||||
// normal bytes
|
||||
0x20...0x21, 0x23...0x5B, 0x5D...0xFF => {},
|
||||
0x00...0x1F, '\\', '\"' => {
|
||||
// Always must escape these.
|
||||
try writer.writeAll(chars[write_cursor..i]);
|
||||
try outputSpecialEscape(chars[i], writer);
|
||||
write_cursor = i + 1;
|
||||
},
|
||||
}
|
||||
}
|
||||
}
|
||||
try writer.writeAll(chars[write_cursor..chars.len]);
|
||||
}
|
||||
|
||||
test {
|
||||
_ = @import("./stringify_test.zig");
|
||||
}
|
||||
@ -1,504 +0,0 @@
|
||||
const std = @import("std");
|
||||
const mem = std.mem;
|
||||
const testing = std.testing;
|
||||
|
||||
const ObjectMap = @import("dynamic.zig").ObjectMap;
|
||||
const Value = @import("dynamic.zig").Value;
|
||||
|
||||
const StringifyOptions = @import("stringify.zig").StringifyOptions;
|
||||
const stringify = @import("stringify.zig").stringify;
|
||||
const stringifyMaxDepth = @import("stringify.zig").stringifyMaxDepth;
|
||||
const stringifyArbitraryDepth = @import("stringify.zig").stringifyArbitraryDepth;
|
||||
const stringifyAlloc = @import("stringify.zig").stringifyAlloc;
|
||||
const writeStream = @import("stringify.zig").writeStream;
|
||||
const writeStreamMaxDepth = @import("stringify.zig").writeStreamMaxDepth;
|
||||
const writeStreamArbitraryDepth = @import("stringify.zig").writeStreamArbitraryDepth;
|
||||
|
||||
test "json write stream" {
|
||||
var out_buf: [1024]u8 = undefined;
|
||||
var slice_stream = std.io.fixedBufferStream(&out_buf);
|
||||
const out = slice_stream.writer();
|
||||
|
||||
{
|
||||
var w = writeStream(out, .{ .whitespace = .indent_2 });
|
||||
try testBasicWriteStream(&w, &slice_stream);
|
||||
}
|
||||
|
||||
{
|
||||
var w = writeStreamMaxDepth(out, .{ .whitespace = .indent_2 }, 8);
|
||||
try testBasicWriteStream(&w, &slice_stream);
|
||||
}
|
||||
|
||||
{
|
||||
var w = writeStreamMaxDepth(out, .{ .whitespace = .indent_2 }, null);
|
||||
try testBasicWriteStream(&w, &slice_stream);
|
||||
}
|
||||
|
||||
{
|
||||
var w = writeStreamArbitraryDepth(testing.allocator, out, .{ .whitespace = .indent_2 });
|
||||
defer w.deinit();
|
||||
try testBasicWriteStream(&w, &slice_stream);
|
||||
}
|
||||
}
|
||||
|
||||
fn testBasicWriteStream(w: anytype, slice_stream: anytype) !void {
|
||||
slice_stream.reset();
|
||||
|
||||
try w.beginObject();
|
||||
|
||||
try w.objectField("object");
|
||||
var arena_allocator = std.heap.ArenaAllocator.init(testing.allocator);
|
||||
defer arena_allocator.deinit();
|
||||
try w.write(try getJsonObject(arena_allocator.allocator()));
|
||||
|
||||
try w.objectFieldRaw("\"string\"");
|
||||
try w.write("This is a string");
|
||||
|
||||
try w.objectField("array");
|
||||
try w.beginArray();
|
||||
try w.write("Another string");
|
||||
try w.write(@as(i32, 1));
|
||||
try w.write(@as(f32, 3.5));
|
||||
try w.endArray();
|
||||
|
||||
try w.objectField("int");
|
||||
try w.write(@as(i32, 10));
|
||||
|
||||
try w.objectField("float");
|
||||
try w.write(@as(f32, 3.5));
|
||||
|
||||
try w.endObject();
|
||||
|
||||
const result = slice_stream.getWritten();
|
||||
const expected =
|
||||
\\{
|
||||
\\ "object": {
|
||||
\\ "one": 1,
|
||||
\\ "two": 2e0
|
||||
\\ },
|
||||
\\ "string": "This is a string",
|
||||
\\ "array": [
|
||||
\\ "Another string",
|
||||
\\ 1,
|
||||
\\ 3.5e0
|
||||
\\ ],
|
||||
\\ "int": 10,
|
||||
\\ "float": 3.5e0
|
||||
\\}
|
||||
;
|
||||
try std.testing.expectEqualStrings(expected, result);
|
||||
}
|
||||
|
||||
fn getJsonObject(allocator: std.mem.Allocator) !Value {
|
||||
var value = Value{ .object = ObjectMap.init(allocator) };
|
||||
try value.object.put("one", Value{ .integer = @as(i64, @intCast(1)) });
|
||||
try value.object.put("two", Value{ .float = 2.0 });
|
||||
return value;
|
||||
}
|
||||
|
||||
test "stringify null optional fields" {
|
||||
const MyStruct = struct {
|
||||
optional: ?[]const u8 = null,
|
||||
required: []const u8 = "something",
|
||||
another_optional: ?[]const u8 = null,
|
||||
another_required: []const u8 = "something else",
|
||||
};
|
||||
try testStringify(
|
||||
\\{"optional":null,"required":"something","another_optional":null,"another_required":"something else"}
|
||||
,
|
||||
MyStruct{},
|
||||
.{},
|
||||
);
|
||||
try testStringify(
|
||||
\\{"required":"something","another_required":"something else"}
|
||||
,
|
||||
MyStruct{},
|
||||
.{ .emit_null_optional_fields = false },
|
||||
);
|
||||
}
|
||||
|
||||
test "stringify basic types" {
|
||||
try testStringify("false", false, .{});
|
||||
try testStringify("true", true, .{});
|
||||
try testStringify("null", @as(?u8, null), .{});
|
||||
try testStringify("null", @as(?*u32, null), .{});
|
||||
try testStringify("42", 42, .{});
|
||||
try testStringify("4.2e1", 42.0, .{});
|
||||
try testStringify("42", @as(u8, 42), .{});
|
||||
try testStringify("42", @as(u128, 42), .{});
|
||||
try testStringify("9999999999999999", 9999999999999999, .{});
|
||||
try testStringify("4.2e1", @as(f32, 42), .{});
|
||||
try testStringify("4.2e1", @as(f64, 42), .{});
|
||||
try testStringify("\"ItBroke\"", @as(anyerror, error.ItBroke), .{});
|
||||
try testStringify("\"ItBroke\"", error.ItBroke, .{});
|
||||
}
|
||||
|
||||
test "stringify string" {
|
||||
try testStringify("\"hello\"", "hello", .{});
|
||||
try testStringify("\"with\\nescapes\\r\"", "with\nescapes\r", .{});
|
||||
try testStringify("\"with\\nescapes\\r\"", "with\nescapes\r", .{ .escape_unicode = true });
|
||||
try testStringify("\"with unicode\\u0001\"", "with unicode\u{1}", .{});
|
||||
try testStringify("\"with unicode\\u0001\"", "with unicode\u{1}", .{ .escape_unicode = true });
|
||||
try testStringify("\"with unicode\u{80}\"", "with unicode\u{80}", .{});
|
||||
try testStringify("\"with unicode\\u0080\"", "with unicode\u{80}", .{ .escape_unicode = true });
|
||||
try testStringify("\"with unicode\u{FF}\"", "with unicode\u{FF}", .{});
|
||||
try testStringify("\"with unicode\\u00ff\"", "with unicode\u{FF}", .{ .escape_unicode = true });
|
||||
try testStringify("\"with unicode\u{100}\"", "with unicode\u{100}", .{});
|
||||
try testStringify("\"with unicode\\u0100\"", "with unicode\u{100}", .{ .escape_unicode = true });
|
||||
try testStringify("\"with unicode\u{800}\"", "with unicode\u{800}", .{});
|
||||
try testStringify("\"with unicode\\u0800\"", "with unicode\u{800}", .{ .escape_unicode = true });
|
||||
try testStringify("\"with unicode\u{8000}\"", "with unicode\u{8000}", .{});
|
||||
try testStringify("\"with unicode\\u8000\"", "with unicode\u{8000}", .{ .escape_unicode = true });
|
||||
try testStringify("\"with unicode\u{D799}\"", "with unicode\u{D799}", .{});
|
||||
try testStringify("\"with unicode\\ud799\"", "with unicode\u{D799}", .{ .escape_unicode = true });
|
||||
try testStringify("\"with unicode\u{10000}\"", "with unicode\u{10000}", .{});
|
||||
try testStringify("\"with unicode\\ud800\\udc00\"", "with unicode\u{10000}", .{ .escape_unicode = true });
|
||||
try testStringify("\"with unicode\u{10FFFF}\"", "with unicode\u{10FFFF}", .{});
|
||||
try testStringify("\"with unicode\\udbff\\udfff\"", "with unicode\u{10FFFF}", .{ .escape_unicode = true });
|
||||
}
|
||||
|
||||
test "stringify many-item sentinel-terminated string" {
|
||||
try testStringify("\"hello\"", @as([*:0]const u8, "hello"), .{});
|
||||
try testStringify("\"with\\nescapes\\r\"", @as([*:0]const u8, "with\nescapes\r"), .{ .escape_unicode = true });
|
||||
try testStringify("\"with unicode\\u0001\"", @as([*:0]const u8, "with unicode\u{1}"), .{ .escape_unicode = true });
|
||||
}
|
||||
|
||||
test "stringify enums" {
|
||||
const E = enum {
|
||||
foo,
|
||||
bar,
|
||||
};
|
||||
try testStringify("\"foo\"", E.foo, .{});
|
||||
try testStringify("\"bar\"", E.bar, .{});
|
||||
}
|
||||
|
||||
test "stringify non-exhaustive enum" {
|
||||
const E = enum(u8) {
|
||||
foo = 0,
|
||||
_,
|
||||
};
|
||||
try testStringify("\"foo\"", E.foo, .{});
|
||||
try testStringify("1", @as(E, @enumFromInt(1)), .{});
|
||||
}
|
||||
|
||||
test "stringify enum literals" {
|
||||
try testStringify("\"foo\"", .foo, .{});
|
||||
try testStringify("\"bar\"", .bar, .{});
|
||||
}
|
||||
|
||||
test "stringify tagged unions" {
|
||||
const T = union(enum) {
|
||||
nothing,
|
||||
foo: u32,
|
||||
bar: bool,
|
||||
};
|
||||
try testStringify("{\"nothing\":{}}", T{ .nothing = {} }, .{});
|
||||
try testStringify("{\"foo\":42}", T{ .foo = 42 }, .{});
|
||||
try testStringify("{\"bar\":true}", T{ .bar = true }, .{});
|
||||
}
|
||||
|
||||
test "stringify struct" {
|
||||
try testStringify("{\"foo\":42}", struct {
|
||||
foo: u32,
|
||||
}{ .foo = 42 }, .{});
|
||||
}
|
||||
|
||||
test "emit_strings_as_arrays" {
|
||||
// Should only affect string values, not object keys.
|
||||
try testStringify("{\"foo\":\"bar\"}", .{ .foo = "bar" }, .{});
|
||||
try testStringify("{\"foo\":[98,97,114]}", .{ .foo = "bar" }, .{ .emit_strings_as_arrays = true });
|
||||
// Should *not* affect these types:
|
||||
try testStringify("\"foo\"", @as(enum { foo, bar }, .foo), .{ .emit_strings_as_arrays = true });
|
||||
try testStringify("\"ItBroke\"", error.ItBroke, .{ .emit_strings_as_arrays = true });
|
||||
// Should work on these:
|
||||
try testStringify("\"bar\"", @Vector(3, u8){ 'b', 'a', 'r' }, .{});
|
||||
try testStringify("[98,97,114]", @Vector(3, u8){ 'b', 'a', 'r' }, .{ .emit_strings_as_arrays = true });
|
||||
try testStringify("\"bar\"", [3]u8{ 'b', 'a', 'r' }, .{});
|
||||
try testStringify("[98,97,114]", [3]u8{ 'b', 'a', 'r' }, .{ .emit_strings_as_arrays = true });
|
||||
}
|
||||
|
||||
test "stringify struct with indentation" {
|
||||
try testStringify(
|
||||
\\{
|
||||
\\ "foo": 42,
|
||||
\\ "bar": [
|
||||
\\ 1,
|
||||
\\ 2,
|
||||
\\ 3
|
||||
\\ ]
|
||||
\\}
|
||||
,
|
||||
struct {
|
||||
foo: u32,
|
||||
bar: [3]u32,
|
||||
}{
|
||||
.foo = 42,
|
||||
.bar = .{ 1, 2, 3 },
|
||||
},
|
||||
.{ .whitespace = .indent_4 },
|
||||
);
|
||||
try testStringify(
|
||||
"{\n\t\"foo\": 42,\n\t\"bar\": [\n\t\t1,\n\t\t2,\n\t\t3\n\t]\n}",
|
||||
struct {
|
||||
foo: u32,
|
||||
bar: [3]u32,
|
||||
}{
|
||||
.foo = 42,
|
||||
.bar = .{ 1, 2, 3 },
|
||||
},
|
||||
.{ .whitespace = .indent_tab },
|
||||
);
|
||||
try testStringify(
|
||||
\\{"foo":42,"bar":[1,2,3]}
|
||||
,
|
||||
struct {
|
||||
foo: u32,
|
||||
bar: [3]u32,
|
||||
}{
|
||||
.foo = 42,
|
||||
.bar = .{ 1, 2, 3 },
|
||||
},
|
||||
.{ .whitespace = .minified },
|
||||
);
|
||||
}
|
||||
|
||||
test "stringify struct with void field" {
|
||||
try testStringify("{\"foo\":42}", struct {
|
||||
foo: u32,
|
||||
bar: void = {},
|
||||
}{ .foo = 42 }, .{});
|
||||
}
|
||||
|
||||
test "stringify array of structs" {
|
||||
const MyStruct = struct {
|
||||
foo: u32,
|
||||
};
|
||||
try testStringify("[{\"foo\":42},{\"foo\":100},{\"foo\":1000}]", [_]MyStruct{
|
||||
MyStruct{ .foo = 42 },
|
||||
MyStruct{ .foo = 100 },
|
||||
MyStruct{ .foo = 1000 },
|
||||
}, .{});
|
||||
}
|
||||
|
||||
test "stringify struct with custom stringifier" {
|
||||
try testStringify("[\"something special\",42]", struct {
|
||||
foo: u32,
|
||||
const Self = @This();
|
||||
pub fn jsonStringify(value: @This(), jws: anytype) !void {
|
||||
_ = value;
|
||||
try jws.beginArray();
|
||||
try jws.write("something special");
|
||||
try jws.write(42);
|
||||
try jws.endArray();
|
||||
}
|
||||
}{ .foo = 42 }, .{});
|
||||
}
|
||||
|
||||
test "stringify vector" {
|
||||
try testStringify("[1,1]", @as(@Vector(2, u32), @splat(1)), .{});
|
||||
try testStringify("\"AA\"", @as(@Vector(2, u8), @splat('A')), .{});
|
||||
try testStringify("[65,65]", @as(@Vector(2, u8), @splat('A')), .{ .emit_strings_as_arrays = true });
|
||||
}
|
||||
|
||||
test "stringify tuple" {
|
||||
try testStringify("[\"foo\",42]", std.meta.Tuple(&.{ []const u8, usize }){ "foo", 42 }, .{});
|
||||
}
|
||||
|
||||
fn testStringify(expected: []const u8, value: anytype, options: StringifyOptions) !void {
|
||||
const ValidationWriter = struct {
|
||||
const Self = @This();
|
||||
pub const Writer = std.io.Writer(*Self, Error, write);
|
||||
pub const Error = error{
|
||||
TooMuchData,
|
||||
DifferentData,
|
||||
};
|
||||
|
||||
expected_remaining: []const u8,
|
||||
|
||||
fn init(exp: []const u8) Self {
|
||||
return .{ .expected_remaining = exp };
|
||||
}
|
||||
|
||||
pub fn writer(self: *Self) Writer {
|
||||
return .{ .context = self };
|
||||
}
|
||||
|
||||
fn write(self: *Self, bytes: []const u8) Error!usize {
|
||||
if (self.expected_remaining.len < bytes.len) {
|
||||
std.debug.print(
|
||||
\\====== expected this output: =========
|
||||
\\{s}
|
||||
\\======== instead found this: =========
|
||||
\\{s}
|
||||
\\======================================
|
||||
, .{
|
||||
self.expected_remaining,
|
||||
bytes,
|
||||
});
|
||||
return error.TooMuchData;
|
||||
}
|
||||
if (!mem.eql(u8, self.expected_remaining[0..bytes.len], bytes)) {
|
||||
std.debug.print(
|
||||
\\====== expected this output: =========
|
||||
\\{s}
|
||||
\\======== instead found this: =========
|
||||
\\{s}
|
||||
\\======================================
|
||||
, .{
|
||||
self.expected_remaining[0..bytes.len],
|
||||
bytes,
|
||||
});
|
||||
return error.DifferentData;
|
||||
}
|
||||
self.expected_remaining = self.expected_remaining[bytes.len..];
|
||||
return bytes.len;
|
||||
}
|
||||
};
|
||||
|
||||
var vos = ValidationWriter.init(expected);
|
||||
try stringifyArbitraryDepth(testing.allocator, value, options, vos.writer());
|
||||
if (vos.expected_remaining.len > 0) return error.NotEnoughData;
|
||||
|
||||
// Also test with safety disabled.
|
||||
try testStringifyMaxDepth(expected, value, options, null);
|
||||
try testStringifyArbitraryDepth(expected, value, options);
|
||||
}
|
||||
|
||||
fn testStringifyMaxDepth(expected: []const u8, value: anytype, options: StringifyOptions, comptime max_depth: ?usize) !void {
|
||||
var out_buf: [1024]u8 = undefined;
|
||||
var slice_stream = std.io.fixedBufferStream(&out_buf);
|
||||
const out = slice_stream.writer();
|
||||
|
||||
try stringifyMaxDepth(value, options, out, max_depth);
|
||||
const got = slice_stream.getWritten();
|
||||
|
||||
try testing.expectEqualStrings(expected, got);
|
||||
}
|
||||
|
||||
fn testStringifyArbitraryDepth(expected: []const u8, value: anytype, options: StringifyOptions) !void {
|
||||
var out_buf: [1024]u8 = undefined;
|
||||
var slice_stream = std.io.fixedBufferStream(&out_buf);
|
||||
const out = slice_stream.writer();
|
||||
|
||||
try stringifyArbitraryDepth(testing.allocator, value, options, out);
|
||||
const got = slice_stream.getWritten();
|
||||
|
||||
try testing.expectEqualStrings(expected, got);
|
||||
}
|
||||
|
||||
test "stringify alloc" {
|
||||
const allocator = std.testing.allocator;
|
||||
const expected =
|
||||
\\{"foo":"bar","answer":42,"my_friend":"sammy"}
|
||||
;
|
||||
const actual = try stringifyAlloc(allocator, .{ .foo = "bar", .answer = 42, .my_friend = "sammy" }, .{});
|
||||
defer allocator.free(actual);
|
||||
|
||||
try std.testing.expectEqualStrings(expected, actual);
|
||||
}
|
||||
|
||||
test "comptime stringify" {
|
||||
comptime testStringifyMaxDepth("false", false, .{}, null) catch unreachable;
|
||||
comptime testStringifyMaxDepth("false", false, .{}, 0) catch unreachable;
|
||||
comptime testStringifyArbitraryDepth("false", false, .{}) catch unreachable;
|
||||
|
||||
const MyStruct = struct {
|
||||
foo: u32,
|
||||
};
|
||||
comptime testStringifyMaxDepth("[{\"foo\":42},{\"foo\":100},{\"foo\":1000}]", [_]MyStruct{
|
||||
MyStruct{ .foo = 42 },
|
||||
MyStruct{ .foo = 100 },
|
||||
MyStruct{ .foo = 1000 },
|
||||
}, .{}, null) catch unreachable;
|
||||
comptime testStringifyMaxDepth("[{\"foo\":42},{\"foo\":100},{\"foo\":1000}]", [_]MyStruct{
|
||||
MyStruct{ .foo = 42 },
|
||||
MyStruct{ .foo = 100 },
|
||||
MyStruct{ .foo = 1000 },
|
||||
}, .{}, 8) catch unreachable;
|
||||
}
|
||||
|
||||
test "print" {
|
||||
var out_buf: [1024]u8 = undefined;
|
||||
var slice_stream = std.io.fixedBufferStream(&out_buf);
|
||||
const out = slice_stream.writer();
|
||||
|
||||
var w = writeStream(out, .{ .whitespace = .indent_2 });
|
||||
defer w.deinit();
|
||||
|
||||
try w.beginObject();
|
||||
try w.objectField("a");
|
||||
try w.print("[ ]", .{});
|
||||
try w.objectField("b");
|
||||
try w.beginArray();
|
||||
try w.print("[{s}] ", .{"[]"});
|
||||
try w.print(" {}", .{12345});
|
||||
try w.endArray();
|
||||
try w.endObject();
|
||||
|
||||
const result = slice_stream.getWritten();
|
||||
const expected =
|
||||
\\{
|
||||
\\ "a": [ ],
|
||||
\\ "b": [
|
||||
\\ [[]] ,
|
||||
\\ 12345
|
||||
\\ ]
|
||||
\\}
|
||||
;
|
||||
try std.testing.expectEqualStrings(expected, result);
|
||||
}
|
||||
|
||||
test "nonportable numbers" {
|
||||
try testStringify("9999999999999999", 9999999999999999, .{});
|
||||
try testStringify("\"9999999999999999\"", 9999999999999999, .{ .emit_nonportable_numbers_as_strings = true });
|
||||
}
|
||||
|
||||
test "stringify raw streaming" {
|
||||
var out_buf: [1024]u8 = undefined;
|
||||
var slice_stream = std.io.fixedBufferStream(&out_buf);
|
||||
const out = slice_stream.writer();
|
||||
|
||||
{
|
||||
var w = writeStream(out, .{ .whitespace = .indent_2 });
|
||||
try testRawStreaming(&w, &slice_stream);
|
||||
}
|
||||
|
||||
{
|
||||
var w = writeStreamMaxDepth(out, .{ .whitespace = .indent_2 }, 8);
|
||||
try testRawStreaming(&w, &slice_stream);
|
||||
}
|
||||
|
||||
{
|
||||
var w = writeStreamMaxDepth(out, .{ .whitespace = .indent_2 }, null);
|
||||
try testRawStreaming(&w, &slice_stream);
|
||||
}
|
||||
|
||||
{
|
||||
var w = writeStreamArbitraryDepth(testing.allocator, out, .{ .whitespace = .indent_2 });
|
||||
defer w.deinit();
|
||||
try testRawStreaming(&w, &slice_stream);
|
||||
}
|
||||
}
|
||||
|
||||
fn testRawStreaming(w: anytype, slice_stream: anytype) !void {
|
||||
slice_stream.reset();
|
||||
|
||||
try w.beginObject();
|
||||
try w.beginObjectFieldRaw();
|
||||
try w.stream.writeAll("\"long");
|
||||
try w.stream.writeAll(" key\"");
|
||||
w.endObjectFieldRaw();
|
||||
try w.beginWriteRaw();
|
||||
try w.stream.writeAll("\"long");
|
||||
try w.stream.writeAll(" value\"");
|
||||
w.endWriteRaw();
|
||||
try w.endObject();
|
||||
|
||||
const result = slice_stream.getWritten();
|
||||
const expected =
|
||||
\\{
|
||||
\\ "long key": "long value"
|
||||
\\}
|
||||
;
|
||||
try std.testing.expectEqualStrings(expected, result);
|
||||
}
|
||||
@ -1,10 +1,10 @@
|
||||
const std = @import("std");
|
||||
const json = std.json;
|
||||
const testing = std.testing;
|
||||
const parseFromSlice = @import("./static.zig").parseFromSlice;
|
||||
const validate = @import("./scanner.zig").validate;
|
||||
const JsonScanner = @import("./scanner.zig").Scanner;
|
||||
const Value = @import("./dynamic.zig").Value;
|
||||
const stringifyAlloc = @import("./stringify.zig").stringifyAlloc;
|
||||
|
||||
// Support for JSONTestSuite.zig
|
||||
pub fn ok(s: []const u8) !void {
|
||||
@ -52,7 +52,7 @@ fn roundTrip(s: []const u8) !void {
|
||||
var parsed = try parseFromSlice(Value, testing.allocator, s, .{});
|
||||
defer parsed.deinit();
|
||||
|
||||
const rendered = try stringifyAlloc(testing.allocator, parsed.value, .{});
|
||||
const rendered = try json.Stringify.valueAlloc(testing.allocator, parsed.value, .{});
|
||||
defer testing.allocator.free(rendered);
|
||||
|
||||
try testing.expectEqualStrings(s, rendered);
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user