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Handle constants propagation.

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This commit is contained in:
Stephen Chung
2021-05-16 21:21:13 +08:00
parent cce2e02428
commit d1fc362eec
2 changed files with 58 additions and 55 deletions
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41
src/parser.rs
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@@ -3121,29 +3121,32 @@ impl Engine {
}
}
/// Map a `Dynamic` value to an expression.
///
/// Returns Some(expression) if conversion is successful. Otherwise None.
pub fn map_dynamic_to_expr(value: Dynamic, pos: Position) -> Option<Expr> {
match value.0 {
#[cfg(not(feature = "no_float"))]
Union::Float(value, _, _) => Some(Expr::FloatConstant(value, pos)),
impl From<Dynamic> for Expr {
fn from(value: Dynamic) -> Self {
match value.0 {
#[cfg(not(feature = "no_float"))]
Union::Float(value, _, _) => Self::FloatConstant(value, Position::NONE),
#[cfg(feature = "decimal")]
Union::Decimal(value, _, _) => Some(Expr::DynamicConstant(Box::new((*value).into()), pos)),
#[cfg(feature = "decimal")]
Union::Decimal(value, _, _) => {
Self::DynamicConstant(Box::new((*value).into()), Position::NONE)
}
Union::Unit(_, _, _) => Some(Expr::Unit(pos)),
Union::Int(value, _, _) => Some(Expr::IntegerConstant(value, pos)),
Union::Char(value, _, _) => Some(Expr::CharConstant(value, pos)),
Union::Str(value, _, _) => Some(Expr::StringConstant(value, pos)),
Union::Bool(value, _, _) => Some(Expr::BoolConstant(value, pos)),
Union::Unit(_, _, _) => Self::Unit(Position::NONE),
Union::Int(value, _, _) => Self::IntegerConstant(value, Position::NONE),
Union::Char(value, _, _) => Self::CharConstant(value, Position::NONE),
Union::Str(value, _, _) => Self::StringConstant(value, Position::NONE),
Union::Bool(value, _, _) => Self::BoolConstant(value, Position::NONE),
#[cfg(not(feature = "no_index"))]
Union::Array(array, _, _) => Some(Expr::DynamicConstant(Box::new((*array).into()), pos)),
#[cfg(not(feature = "no_index"))]
Union::Array(array, _, _) => {
Self::DynamicConstant(Box::new((*array).into()), Position::NONE)
}
#[cfg(not(feature = "no_object"))]
Union::Map(map, _, _) => Some(Expr::DynamicConstant(Box::new((*map).into()), pos)),
#[cfg(not(feature = "no_object"))]
Union::Map(map, _, _) => Self::DynamicConstant(Box::new((*map).into()), Position::NONE),
_ => None,
_ => Self::DynamicConstant(Box::new(value.into()), Position::NONE),
}
}
}