1 files changed, 32 insertions, 0 deletions

diff --git a/crates/ra_hir/src/ty/primitive.rs b/crates/ra_hir/src/ty/primitive.rs
index 4a5ce5a97..ad79b17e4 100644
--- a/crates/ra_hir/src/ty/primitive.rs
+++ b/crates/ra_hir/src/ty/primitive.rs
@@ -33,6 +33,18 @@ impl IntTy {
             IntTy::I128 => "i128",
         }
     }
+
+    pub fn from_string(s: &str) -> Option<IntTy> {
+        match s {
+            "isize" => Some(IntTy::Isize),
+            "i8" => Some(IntTy::I8),
+            "i16" => Some(IntTy::I16),
+            "i32" => Some(IntTy::I32),
+            "i64" => Some(IntTy::I64),
+            "i128" => Some(IntTy::I128),
+            _ => None,
+        }
+    }
 }
 
 #[derive(Clone, PartialEq, Eq, PartialOrd, Ord, Hash, Copy)]
@@ -56,6 +68,18 @@ impl UintTy {
             UintTy::U128 => "u128",
         }
     }
+
+    pub fn from_string(s: &str) -> Option<UintTy> {
+        match s {
+            "usize" => Some(UintTy::Usize),
+            "u8" => Some(UintTy::U8),
+            "u16" => Some(UintTy::U16),
+            "u32" => Some(UintTy::U32),
+            "u64" => Some(UintTy::U64),
+            "u128" => Some(UintTy::U128),
+            _ => None,
+        }
+    }
 }
 
 impl fmt::Debug for UintTy {
@@ -95,4 +119,12 @@ impl FloatTy {
             FloatTy::F64 => "f64",
         }
     }
+
+    pub fn from_string(s: &str) -> Option<FloatTy> {
+        match s {
+            "f32" => Some(FloatTy::F32),
+            "f64" => Some(FloatTy::F64),
+            _ => None,
+        }
+    }
 }