Post by @algernon@come-from.mad-scientist.club

algernon the wrapper

@algernon@come-from.mad-scientist.club 5 hr. ago

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algernon the wrapper

@algernon@come-from.mad-scientist.club 5 hr. ago

algernon the wrapper

@algernon@come-from.mad-scientist.club 5 hr. ago

Okay, lets brainstorm a bit about error handling! The two places where I expect errors to happen are configuration processing, and matcher instantiation.

In the former case, I want to report errors that point to the right place in the configuration. In the matcher instantiation case... a matcher may or may not be related to any configuration item, so I need to think about both cases.

For simplicity's sake, lets consider the case when no configuration is in play. Something like:

record Config {
whatever: matchers.Patterns,
}

fn compile_configuration() -> Result[Config, Report] {
let whatever = matchers.Patterns.new(["foo", "bar"])?;
Ok(Config { whatever: whatever })
}

If Patterns.new() fails, what should the error report look like?

(Also, ignore that the code mentions configuration - there's no user config processing going on, it's just the framework I'll eventually arrive to.)

algernon the wrapper

@algernon@come-from.mad-scientist.club 5 hr. ago

Or, taking a step back, even: what if I want to construct a report entirely on the Roto side?

record Config {
whatever: String,
}

fn compile_configuration() -> Result[Config, Report] {
let whatever = blabla("hello world")?;
Ok(Config { whatever: whatever })
}

fn blabla(msg: String) -> Result[String, Report] {
Err(???)
}

What goes inside Err(???)? And what should it output?

algernon the wrapper

@algernon@come-from.mad-scientist.club 5 hr. ago

~12 more replies

algernon the wrapper

@algernon@come-from.mad-scientist.club 4 hr. ago

test test_report {
let report = Report
.new("hello").help("hello help").code("code::hello")
.wrap("foobar").help("foobar help").code("code::foobar")
.wrap("baz").help("baz help").code("code::baz").url("http://localhost");
print(report.to_string());

accept
}

Test 3 / 3: pkg.test_report... code::baz (http://localhost)

× hello
├─▶ foobar
╰─▶ baz
help: baz help

ok
Ran 3 tests, 3 succeeded, 0 failed

That's a reasonable start, I think.