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revset: extract helper to parse literal to e.g. usize

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This commit is contained in:
Yuya Nishihara 2023-03-25 12:32:36 +09:00
parent d04556cf18
commit 185549f031
1 changed files with 19 additions and 6 deletions
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25
lib/src/revset.rs
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@ -16,6 +16,7 @@ use std::collections::HashMap;
use std::ops::Range;
use std::path::Path;
use std::rc::Rc;
use std::str::FromStr;
use std::sync::Arc;
use std::{error, fmt};
@ -1037,17 +1038,29 @@ fn parse_function_argument_to_string(
pair: Pair<Rule>,
state: ParseState,
) -> Result<String, RevsetParseError> {
parse_function_argument_as_literal("string", name, pair, state)
}
fn parse_function_argument_as_literal<T: FromStr>(
type_name: &str,
name: &str,
pair: Pair<Rule>,
state: ParseState,
) -> Result<T, RevsetParseError> {
let span = pair.as_span();
let expression = parse_expression_rule(pair.into_inner(), state)?;
match expression.as_ref() {
RevsetExpression::Symbol(symbol) => Ok(symbol.clone()),
_ => Err(RevsetParseError::with_span(
let make_error = || {
RevsetParseError::with_span(
RevsetParseErrorKind::InvalidFunctionArguments {
name: name.to_string(),
message: "Expected function argument of type string".to_owned(),
message: format!("Expected function argument of type {type_name}"),
},
span,
)),
)
};
let expression = parse_expression_rule(pair.into_inner(), state)?;
match expression.as_ref() {
RevsetExpression::Symbol(symbol) => symbol.parse().map_err(|_| make_error()),
_ => Err(make_error()),
}
}