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Update IR's helper functions

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This commit is contained in:
Jeehoon Kang
2020-04-11 12:20:53 +09:00
parent 6edb4665c0
commit 72ec63ea82
19 changed files with 505 additions and 125 deletions
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52
src/ir/dtype.rs
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@@ -23,7 +23,7 @@ pub trait HasDtype {
#[derive(Default)]
struct BaseDtype {
scalar: Option<ast::TypeSpecifier>,
size_modifier: Option<ast::TypeSpecifier>,
size_modifiers: Vec<ast::TypeSpecifier>,
signed_option: Option<ast::TypeSpecifier>,
typedef_name: Option<String>,
is_const: bool,
@@ -129,12 +129,7 @@ impl BaseDtype {
self.scalar = Some(type_specifier.clone());
}
ast::TypeSpecifier::Short | ast::TypeSpecifier::Long => {
if self.size_modifier.is_some() {
return Err(DtypeError::Misc {
message: "two or more size modifiers in declaration specifiers".to_string(),
});
}
self.size_modifier = Some(type_specifier.clone());
self.size_modifiers.push(type_specifier.clone())
}
ast::TypeSpecifier::TypedefName(identifier) => {
if self.typedef_name.is_some() {
@@ -277,7 +272,7 @@ impl TryFrom<BaseDtype> for Dtype {
fn try_from(spec: BaseDtype) -> Result<Self, DtypeError> {
assert!(
!(spec.scalar.is_none()
&& spec.size_modifier.is_none()
&& spec.size_modifiers.is_empty()
&& spec.signed_option.is_none()
&& spec.typedef_name.is_none()
&& !spec.is_const),
@@ -303,32 +298,40 @@ impl TryFrom<BaseDtype> for Dtype {
ast::TypeSpecifier::Int => Self::INT,
ast::TypeSpecifier::Float => Self::FLOAT,
ast::TypeSpecifier::Double => Self::DOUBLE,
ast::TypeSpecifier::Unsigned | ast::TypeSpecifier::Signed => {
panic!("Signed option to scalar is not supported")
}
_ => panic!("Dtype::try_from::<BaseDtype>: {:?} is not a scalar type", t),
}
} else {
Self::default()
};
// Applies size modifier
if let Some(size_modifier) = spec.size_modifier {
if dtype != Self::INT {
return Err(DtypeError::Misc {
message: "size modifier can only be used with `int`".to_string(),
});
}
dtype = match size_modifier {
let number_of_modifier = spec.size_modifiers.len();
dtype = match number_of_modifier {
0 => dtype,
1 => match spec.size_modifiers[0] {
ast::TypeSpecifier::Short => Self::SHORT,
ast::TypeSpecifier::Long => Self::LONG,
_ => panic!(
"Dtype::try_from::<BaseDtype>: {:?} is not a size modifier",
size_modifier
"Dtype::try_from::<BaseDtype>: {:?} is not a size modifiers",
spec.size_modifiers
),
},
2 => {
if spec.size_modifiers[0] != ast::TypeSpecifier::Long
|| spec.size_modifiers[1] != ast::TypeSpecifier::Long
{
return Err(DtypeError::Misc {
message: "two or more size modifiers in declaration specifiers"
.to_string(),
});
}
Self::LONGLONG
}
}
_ => {
return Err(DtypeError::Misc {
message: "two or more size modifiers in declaration specifiers".to_string(),
})
}
};
// Applies signedness.
if let Some(signed_option) = spec.signed_option {
@@ -693,8 +696,7 @@ impl Dtype {
let declarator_kind = &declarator.kind;
match &declarator_kind.node {
ast::DeclaratorKind::Abstract => panic!("ast::DeclaratorKind::Abstract is unsupported"),
ast::DeclaratorKind::Identifier(_) => Ok(self),
ast::DeclaratorKind::Abstract | ast::DeclaratorKind::Identifier(_) => Ok(self),
ast::DeclaratorKind::Declarator(declarator) => {
self.with_ast_declarator(&declarator.node)
}