harn_vm/
stdlib.rs

1//! Standard library builtins for the Harn VM.
2//!
3//! Each category of builtins lives in its own sub-module.
4
5mod agents;
6mod concurrency;
7mod crypto;
8mod datetime;
9mod fs;
10mod host;
11mod io;
12mod json;
13mod logging;
14mod math;
15mod path;
16pub mod process;
17mod regex;
18mod sets;
19mod shapes;
20mod strings;
21mod testing;
22mod tools;
23pub mod tracing;
24mod types;
25
26use crate::http::register_http_builtins;
27use crate::llm::register_llm_builtins;
28use crate::mcp::register_mcp_builtins;
29use crate::mcp_server::register_mcp_server_builtins;
30use crate::vm::Vm;
31
32// Re-export helpers used by other modules in harn-vm
33pub(crate) use json::json_to_vm_value;
34pub(crate) use json::schema_result_value;
35pub(crate) fn set_thread_source_dir(dir: &std::path::Path) {
36    process::set_thread_source_dir(dir);
37}
38
39/// Register core builtins: types, math, strings, json, datetime, regex, crypto,
40/// sets, shapes, testing. These are pure/deterministic and require no I/O.
41pub fn register_core_stdlib(vm: &mut Vm) {
42    types::register_type_builtins(vm);
43    math::register_math_builtins(vm);
44    strings::register_string_builtins(vm);
45    json::register_json_builtins(vm);
46    datetime::register_datetime_builtins(vm);
47    regex::register_regex_builtins(vm);
48    crypto::register_crypto_builtins(vm);
49    path::register_path_helper_builtins(vm);
50    sets::register_set_builtins(vm);
51    shapes::register_shape_builtins(vm);
52    testing::register_testing_builtins(vm);
53}
54
55/// Register I/O builtins: filesystem, process, logging, tracing, I/O.
56/// Requires OS access (file reads, process spawning, environment vars).
57pub fn register_io_stdlib(vm: &mut Vm) {
58    io::register_io_builtins(vm);
59    host::register_host_builtins(vm);
60    fs::register_fs_builtins(vm);
61    process::register_process_builtins(vm);
62    process::register_path_builtins(vm);
63    tracing::register_tracing_builtins(vm);
64}
65
66/// Register agent builtins: concurrency, tools, agents, HTTP, LLM, MCP.
67/// Requires network access and async runtime.
68pub fn register_agent_stdlib(vm: &mut Vm) {
69    concurrency::register_concurrency_builtins(vm);
70    tools::register_tool_builtins(vm);
71    agents::register_agent_builtins(vm);
72    register_http_builtins(vm);
73    register_llm_builtins(vm);
74    register_mcp_builtins(vm);
75    register_mcp_server_builtins(vm);
76}
77
78/// Register all standard builtins on a VM (core + io + agent).
79pub fn register_vm_stdlib(vm: &mut Vm) {
80    register_core_stdlib(vm);
81    register_io_stdlib(vm);
82    register_agent_stdlib(vm);
83}
84
85/// Return the canonical list of all stdlib builtin names.
86/// This creates a temporary VM, registers all builtins, and collects the names.
87/// Used by harn-lint and harn-lsp to avoid hardcoded duplicate lists.
88pub fn stdlib_builtin_names() -> Vec<String> {
89    let mut vm = Vm::new();
90    register_vm_stdlib(&mut vm);
91    // Register path-dependent builtins with a dummy path so we capture their names.
92    let tmp = std::path::PathBuf::from("/tmp");
93    crate::store::register_store_builtins(&mut vm, &tmp);
94    crate::checkpoint::register_checkpoint_builtins(&mut vm, &tmp, "default");
95    crate::metadata::register_metadata_builtins(&mut vm, &tmp);
96    crate::metadata::register_scan_builtins(&mut vm, &tmp);
97    let mut names = vm.builtin_names();
98    // These are handled as special opcodes/keywords, not registered builtins,
99    // but the linter should recognize them as valid function calls.
100    for extra in [
101        "spawn",
102        "await",
103        "cancel",
104        "cancel_graceful",
105        "is_cancelled",
106    ] {
107        names.push(extra.to_string());
108    }
109    names
110}
111
112/// Reset thread-local stdlib state (logging, tracing, source dir). Call between test runs.
113pub fn reset_stdlib_state() {
114    logging::reset_logging_state();
115    process::reset_process_state();
116    fs::reset_fs_state();
117    json::reset_json_state();
118    host::reset_host_state();
119    agents::records::reset_eval_metrics();
120}
harn_vm/stdlib.rs

harn_vm/
stdlib.rs
