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Pre: Handle SrcVar.

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This commit is contained in:
Nick Alexander 2017-04-05 15:30:22 -07:00
parent 62fda71fbc
commit 6544ca1594
1 changed files with 33 additions and 14 deletions
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43
query/src/lib.rs
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@ -147,7 +147,11 @@ impl FromValue<SrcVar> for SrcVar {
impl SrcVar {
pub fn from_symbol(sym: &PlainSymbol) -> Option<SrcVar> {
if sym.is_src_symbol() {
if sym.0 == "$" {
Some(SrcVar::DefaultSrc)
} else {
Some(SrcVar::NamedSrc(sym.plain_name().to_string()))
}
} else {
None
}
@ -185,19 +189,34 @@ pub enum FnArg {
impl FromValue<FnArg> for FnArg {
fn from_value(v: edn::ValueAndSpan) -> Option<FnArg> {
// TODO: support SrcVars.
Variable::from_value(v.clone()) // TODO: don't clone!
.and_then(|v| Some(FnArg::Variable(v)))
.or_else(|| {
println!("from_value {}", v.inner);
use edn::SpannedValue::*;
match v.inner {
edn::SpannedValue::Integer(i) => Some(FnArg::EntidOrInteger(i)),
edn::SpannedValue::Boolean(b) => Some(FnArg::Constant(NonIntegerConstant::Boolean(b))),
edn::SpannedValue::BigInteger(x) => Some(FnArg::Constant(NonIntegerConstant::BigInteger(x))),
edn::SpannedValue::Float(f) => Some(FnArg::Constant(NonIntegerConstant::Float(f))),
edn::SpannedValue::Text(ref s) => Some(FnArg::Constant(NonIntegerConstant::Text(Rc::new(s.clone())))),
_ => unimplemented!(),
}})
Integer(x) =>
Some(FnArg::EntidOrInteger(x)),
PlainSymbol(ref x) if x.is_src_symbol() =>
SrcVar::from_symbol(x).map(FnArg::SrcVar),
PlainSymbol(ref x) if x.is_var_symbol() =>
Variable::from_symbol(x).map(FnArg::Variable),
PlainSymbol(_) => None,
NamespacedKeyword(ref x) =>
Some(FnArg::Ident(x.clone())),
Boolean(x) =>
Some(FnArg::Constant(NonIntegerConstant::Boolean(x))),
Float(x) =>
Some(FnArg::Constant(NonIntegerConstant::Float(x))),
BigInteger(ref x) =>
Some(FnArg::Constant(NonIntegerConstant::BigInteger(x.clone()))),
Text(ref x) =>
// TODO: intern strings. #398.
Some(FnArg::Constant(NonIntegerConstant::Text(Rc::new(x.clone())))),
Nil |
NamespacedSymbol(_) |
Keyword(_) |
Vector(_) |
List(_) |
Set(_) |
Map(_) => None,
}
}
}