7709: Added the check for return type of len function.

2021-03-16 01:16:59 +05:30
parent c0a2b4e826
commit 714836959b
2 changed files with 33 additions and 9 deletions
--- a/crates/hir/src/lib.rs
+++ b/crates/hir/src/lib.rs
@@ -1631,6 +1631,13 @@ impl Type {
        matches!(self.ty.value.interned(&Interner), TyKind::Ref(hir_ty::Mutability::Mut, ..))
    }

+    pub fn is_usize(&self) -> bool {
+        matches!(
+            self.ty.value.interned(&Interner),
+            TyKind::Scalar(Scalar::Uint(hir_ty::primitive::UintTy::Usize))
+        )
+    }
+
    pub fn remove_ref(&self) -> Option<Type> {
        match &self.ty.value.interned(&Interner) {
            TyKind::Ref(.., ty) => Some(self.derived(ty.clone())),