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Issue homework 2: irgen

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This commit is contained in:
Jeehoon Kang
2020-04-01 10:54:46 +09:00
parent 2a5a5e71ed
commit 93a1d767a5
18 changed files with 1009 additions and 588 deletions
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34
src/c/parse.rs
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@@ -76,7 +76,20 @@ impl AssertSupported for TranslationUnit {
impl AssertSupported for ExternalDeclaration {
fn assert_supported(&self) {
match self {
Self::Declaration(decl) => decl.assert_supported(),
Self::Declaration(decl) => {
for spec in &decl.node.specifiers {
if let DeclarationSpecifier::StorageClass(storage_class) = &spec.node {
// `typedef` is allowed only when it is used in the external declaration.
if StorageClassSpecifier::Typedef != storage_class.node {
panic!("`StorageClassifier` other than `Typedef`")
}
} else {
spec.assert_supported();
}
}
decl.node.declarators.assert_supported();
}
Self::StaticAssert(_) => panic!("ExternalDeclaration::StaticAssert"),
Self::FunctionDefinition(fdef) => fdef.assert_supported(),
}
@@ -102,9 +115,7 @@ impl AssertSupported for FunctionDefinition {
impl AssertSupported for DeclarationSpecifier {
fn assert_supported(&self) {
match self {
Self::StorageClass(storage_class_specifier) => {
storage_class_specifier.assert_supported()
}
Self::StorageClass(_) => panic!("DeclarationSpecifier::StorageClass"),
Self::TypeSpecifier(type_specifier) => type_specifier.assert_supported(),
Self::TypeQualifier(type_qualifier) => type_qualifier.assert_supported(),
Self::Function(_) => panic!("DeclarationSpecifier::Function"),
@@ -114,15 +125,6 @@ impl AssertSupported for DeclarationSpecifier {
}
}
impl AssertSupported for StorageClassSpecifier {
fn assert_supported(&self) {
match self {
Self::Typedef => (),
_ => panic!("StorageClassifier other than Typedef"),
}
}
}
impl AssertSupported for TypeSpecifier {
fn assert_supported(&self) {
match self {
@@ -242,7 +244,11 @@ impl AssertSupported for PointerQualifier {
impl AssertSupported for ArrayDeclarator {
fn assert_supported(&self) {
self.qualifiers.assert_supported();
// In C99, type qualifier(e.g., const) is allowed when
// array declarator is used as function parameter.
// However, KECC does not allow this feature because
// it complicates IR generating logic.
assert!(self.qualifiers.is_empty());
self.size.assert_supported();
}
}