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[glsl-in] Use macro for qualifier match

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This commit is contained in:
João Capucho 2021-06-21 20:36:15 +01:00
parent 93436047f3
commit 898c2e7c68
1 changed files with 40 additions and 50 deletions
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90
src/front/glsl/variables.rs
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@ -8,6 +8,16 @@ use super::ast::*;
use super::error::ErrorKind;
use super::token::SourceMetadata;
macro_rules! qualifier_arm {
($src:expr, $tgt:expr, $meta:expr, $msg:literal $(,)?) => {{
if $tgt.is_some() {
return Err(ErrorKind::SemanticError($meta, $msg.into()));
}
$tgt = Some($src);
}};
}
pub struct VarDeclaration<'a> {
pub qualifiers: &'a [(TypeQualifier, SourceMetadata)],
pub ty: Handle<Type>,
@ -310,57 +320,37 @@ impl Program<'_> {
storage = s;
}
TypeQualifier::Interpolation(i) => {
if interpolation.is_some() {
return Err(ErrorKind::SemanticError(
meta,
"Cannot use more than one interpolation qualifier per declaration"
.into(),
));
}
TypeQualifier::Interpolation(i) => qualifier_arm!(
i,
interpolation,
meta,
"Cannot use more than one interpolation qualifier per declaration"
),
TypeQualifier::ResourceBinding(ref r) => qualifier_arm!(
r.clone(),
binding,
meta,
"Cannot use more than one binding per declaration"
),
TypeQualifier::Location(l) => qualifier_arm!(
l,
location,
meta,
"Cannot use more than one binding per declaration"
),
TypeQualifier::Sampling(s) => qualifier_arm!(
s,
sampling,
meta,
"Cannot use more than one sampling qualifier per declaration"
),
TypeQualifier::Layout(ref l) => qualifier_arm!(
l,
layout,
meta,
"Cannot use more than one layout qualifier per declaration"
),
interpolation = Some(i);
}
TypeQualifier::ResourceBinding(ref r) => {
if binding.is_some() {
return Err(ErrorKind::SemanticError(
meta,
"Cannot use more than one binding per declaration".into(),
));
}
binding = Some(r.clone());
}
TypeQualifier::Location(l) => {
if location.is_some() {
return Err(ErrorKind::SemanticError(
meta,
"Cannot use more than one binding per declaration".into(),
));
}
location = Some(l);
}
TypeQualifier::Sampling(s) => {
if sampling.is_some() {
return Err(ErrorKind::SemanticError(
meta,
"Cannot use more than one sampling qualifier per declaration".into(),
));
}
sampling = Some(s);
}
TypeQualifier::Layout(ref l) => {
if layout.is_some() {
return Err(ErrorKind::SemanticError(
meta,
"Cannot use more than one layout qualifier per declaration".into(),
));
}
layout = Some(l);
}
_ => {
return Err(ErrorKind::SemanticError(
meta,