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Add some helpful macros

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soup 2024-05-19 02:04:56 -04:00
parent 482f06ee25
commit 5278f3580c
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1 changed files with 33 additions and 13 deletions
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46
src/lib.rs
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@ -198,16 +198,38 @@ pub struct Newt {
ast: Ast, ast: Ast,
} }
impl Newt { impl Newt {
fn build(tmpl: &str) -> Self { pub fn build(tmpl: &str) -> Self {
let ast = parse(tmpl); let ast = parse(tmpl);
Self { ast } Self { ast }
} }
fn execute(&self, value: &dyn Value) -> String { pub fn execute(&self, value: &dyn Value) -> String {
execute(&self.ast, value) execute(&self.ast, value)
} }
} }
#[macro_export]
macro_rules! values_list_map {
($($key:literal: $val:expr),* $(,)?) => {{
&[
$(
($key, $val as &dyn Value)
)*,
]
}}
}
#[macro_export]
macro_rules! values {
($($val:expr),* $(,)?) => {{
&[
$(
&$val as &dyn Value,
)*
]
}}
}
#[cfg(test)] #[cfg(test)]
mod test { mod test {
use crate::{Newt, Value}; use crate::{Newt, Value};
@ -225,7 +247,9 @@ mod test {
fn print_lookup() { fn print_lookup() {
go( go(
"Hello, {.name}!", "Hello, {.name}!",
&[("name", &"Ted" as &dyn Value)], values_list_map! {
"name": &"Ted",
},
"Hello, Ted!", "Hello, Ted!",
); );
} }
@ -234,7 +258,7 @@ mod test {
fn print_for() { fn print_for() {
go( go(
"{for .}{.}, {/for}", "{for .}{.}, {/for}",
&[&"Bob" as &dyn Value, &"Larry"], values!["Bob", "Larry"],
"Bob, Larry, ", "Bob, Larry, ",
); );
} }
@ -243,15 +267,11 @@ mod test {
fn print_for_nested() { fn print_for_nested() {
go( go(
"{for .items}{for .names}{.}, {/for}{/for}", "{for .items}{for .names}{.}, {/for}{/for}",
&[( values_list_map! {
"items", "items": values![values_list_map! {
&[ "names": values!["Bob", "Larry"],
&[( }]
"names", },
&[&"Bob" as &dyn Value, &"Larry"] as &dyn Value,
)] as &dyn Value,
] as &dyn Value,
)],
"Bob, Larry, ", "Bob, Larry, ",
) )
} }