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New custom syntax expression types.

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This commit is contained in:
Stephen Chung
2021-06-10 10:16:39 +08:00
parent c3eb6d65f6
commit a5031969ca
7 changed files with 113 additions and 28 deletions
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10
src/ast.rs
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@@ -1819,11 +1819,11 @@ impl fmt::Debug for Expr {
}
impl Expr {
/// Get the [`Dynamic`] value of a constant expression.
/// Get the [`Dynamic`] value of a literal constant expression.
///
/// Returns [`None`] if the expression is not constant.
/// Returns [`None`] if the expression is not a literal constant.
#[inline]
pub fn get_constant_value(&self) -> Option<Dynamic> {
pub fn get_literal_value(&self) -> Option<Dynamic> {
Some(match self {
Self::DynamicConstant(x, _) => x.as_ref().clone(),
Self::IntegerConstant(x, _) => (*x).into(),
@@ -1838,7 +1838,7 @@ impl Expr {
Self::Array(x, _) if self.is_constant() => {
let mut arr = Array::with_capacity(x.len());
arr.extend(x.iter().map(|v| {
v.get_constant_value()
v.get_literal_value()
.expect("never fails because a constant array always has a constant value")
}));
Dynamic::from_array(arr)
@@ -1850,7 +1850,7 @@ impl Expr {
x.0.iter().for_each(|(k, v)| {
*map.get_mut(k.name.as_str())
.expect("never fails because the template should contain all the keys") = v
.get_constant_value()
.get_literal_value()
.expect("never fails because a constant map always has a constant value")
});
Dynamic::from_map(map)