How do I parse TOML in Zig?

Use serde.zig: serde.toml.fromSliceManaged(Config, allocator, input). serde.zig expects a table at the root, which is what a TOML file is.

Are large integers supported?

serde.zig parses TOML integers as i64, so values above its range can't be read even when the field is u64.

TOML to Zig struct

TOML configs convert into Zig structs. The Strict config preset turns observed scalar values into Zig defaults, so missing keys still produce a usable struct.

Strict configConservative u64; enums off; observed scalar values become Zig defaults — best for TOML/YAML configs.

Upload

title = "myapp"
port = 3000
debug = false

[database]
host = "localhost"
name = "main"

Config.zig

pub const Config = struct {
    title: []const u8 = "myapp",
    port: u64 = 3000,
    debug: bool = false,
    database: Database,
};

pub const Database = struct {
    host: []const u8 = "localhost",
    name: []const u8 = "main",
};

Field decisions

Why each field got its type. Click a row to see it in the input; edit to override.

struct Config $ 4 fields

struct Database $.database 2 fields

TOML structures zigshape handles

Top-level keys and [tables] become fields and nested structs.
Inline tables become nested structs too.
[[arrays of tables]] become slices of a generated struct.
Dates come through as []const u8.

Questions

How do I parse TOML in Zig?: Use serde.zig: serde.toml.fromSliceManaged(Config, allocator, input). serde.zig expects a table at the root, which is what a TOML file is.
Are large integers supported?: serde.zig parses TOML integers as i64, so values above its range can't be read even when the field is u64.