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// Copyright © 2025-2026 The µcad authors <info@microcad.xyz>
// SPDX-License-Identifier: AGPL-3.0-or-later
use microcad_builtin_proc_macros::builtin_mod;
/// Module for built-in debugging.
#[builtin_mod]
#[allow(clippy::module_inception)]
pub mod debug {
use microcad_builtin_proc_macros::builtin_fn;
use microcad_lang::{
builtin::ValueAccess,
eval::{ArgumentMatch, EvalContext, EvalError, EvalResult},
lower::ir::{Identifier, QualifiedName},
parameter,
value::Value,
};
use microcad_lang_base::{PushDiag, SrcReferrer};
/// Assertion with an optional message.
#[builtin_fn(v: Bool, message: String = String::new())]
pub fn assert() -> Symbol {
|params, args, context| {
match ArgumentMatch::find_multi_match(args, params) {
Ok(multi_args) => {
for a in multi_args.args {
let v: bool = a.get("v");
if !v {
let message: String = a.get("message");
context.error(
args,
EvalError::AssertionFailed(if message.is_empty() {
format!("{v}")
} else {
message
}),
)?;
}
}
}
Err(err) => {
// Called `assert` with no or more than 2 parameters
context.error(args, err)?
}
}
Ok(Value::None)
}
}
fn all_equal<T: PartialEq + std::fmt::Debug>(mut iter: impl Iterator<Item = T>) -> bool {
if let Some(first) = iter.next() {
iter.all(|x| x == first)
} else {
true
}
}
/// Assert equal.
#[builtin_fn(array, message: String = String::new())]
pub fn assert_eq() -> Symbol {
|params, args, context| {
match ArgumentMatch::find_multi_match(args, params) {
Ok(multi_args) => {
for array in multi_args.args {
let array_value = &array.get_value("array").expect("missing parameter");
if let Value::Array(exprs) = array_value {
if !all_equal(exprs.iter()) {
let message: String = array.get("message");
context.error(
args,
EvalError::AssertionFailed(if message.is_empty() {
format!("Values differ: {exprs}")
} else {
"{message}".to_string()
}),
)?;
}
} else {
let message: String = array.get("message");
context.error(
args,
EvalError::AssertionFailed(if message.is_empty() {
format!("Invalid: {array_value}")
} else {
"{message}".to_string()
}),
)?;
}
}
}
Err(err) => {
// Called `assert` with no or more than 2 parameters
context.error(args, err)?
}
}
Ok(Value::None)
}
}
fn _is_valid(
src_ref: impl SrcReferrer,
name: &str,
context: &mut EvalContext,
) -> EvalResult<bool> {
// Hack split input string and construct a qualified name.
let name = QualifiedName::new(
name.split("::").map(Identifier::no_ref).collect(),
microcad_lang_base::SrcRef::none(),
);
use microcad_lang::resolve::Lookup;
Ok(
match context.lookup(&name, microcad_lang::resolve::LookupTarget::AnyButMethod) {
Ok(_) => true,
Err(err) => {
if !matches!(*err, EvalError::SymbolNotFound(_)) {
context.error(&src_ref, err)?;
}
false
}
},
)
}
/// Check if a qualified name is a valid symbol.
#[builtin_fn(name: String, message: String = String::new())]
pub fn is_valid() -> Symbol {
|params, args, context| {
match ArgumentMatch::find_match(args, params) {
Ok(args) => {
let name: String = args.get("name");
Ok(_is_valid(args, &name, context)?.into())
}
Err(err) => {
// Called `assert` with no or more than 2 parameters
context.error(args, err)?;
Ok(Value::None)
}
}
}
}
/// Assert if the name string is a valid symbol.
#[builtin_fn(name: String, message: String = String::new())]
pub fn assert_valid() -> Symbol {
|params, args, context| {
match ArgumentMatch::find_match(args, params) {
Ok(args) => {
let name: String = args.get("name");
if !_is_valid(&args, &name, context)? {
let message: String = args.get("message");
context.error(
&args,
EvalError::AssertionFailed(if message.is_empty() {
String::new()
} else {
message
}),
)?;
}
Ok(Value::None)
}
Err(err) => {
// Called `assert` with no or more than 2 parameters
context.error(args, err)?;
Ok(Value::None)
}
}
}
}
/// Assert if the name string is an invalid symbol.
#[builtin_fn(name: String, message: String = String::new())]
pub fn assert_invalid() -> Symbol {
|params, args, context| {
match ArgumentMatch::find_match(args, params) {
Ok(args) => {
let name: String = args.get("name");
if _is_valid(&args, &name, context)? {
let message: String = args.get("message");
context.error(
&args,
EvalError::AssertionFailed(if message.is_empty() {
String::new()
} else {
message
}),
)?;
}
Ok(Value::None)
}
Err(err) => {
// Called `assert` with no or more than 2 parameters
context.error(args, err)?;
Ok(Value::None)
}
}
}
}
}