Rust: Define NumericType, IntegralType and FloatingPointType in Builtins.qll.

rust/ql/lib/codeql/rust/frameworks/stdlib/Builtins.qll

@@ -31,6 +31,30 @@ class BuiltinType extends Struct {
   string getName() { result = super.getName().getText() }
 }
 
+/**
+ * A numerical type, such as `i64`, `usize`, `f32` or `f64`.
+ */
+abstract private class NumericTypeImpl extends BuiltinType {
+}
+
+final class NumericType = NumericTypeImpl;
+
+/**
+ * An integral numerical type, such as `i64` or `usize`.
+ */
+abstract private class IntegralTypeImpl extends NumericTypeImpl {
+}
+
+final class IntegralType = IntegralTypeImpl;
+
+/**
+ * A floating-point numerical type, such as `f32` or `f64`.
+ */
+abstract private class FloatingPointTypeImpl extends NumericTypeImpl {
+}
+
+final class FloatingPointType = FloatingPointTypeImpl;
+
 /** The builtin `bool` type. */
 class Bool extends BuiltinType {
   Bool() { this.getName() = "bool" }
@@ -47,71 +71,71 @@ class Str extends BuiltinType {
 }
 
 /** The builtin `i8` type. */
-class I8 extends BuiltinType {
+class I8 extends IntegralTypeImpl {
   I8() { this.getName() = "i8" }
 }
 
 /** The builtin `i16` type. */
-class I16 extends BuiltinType {
+class I16 extends IntegralTypeImpl {
   I16() { this.getName() = "i16" }
 }
 
 /** The builtin `i32` type. */
-class I32 extends BuiltinType {
+class I32 extends IntegralTypeImpl {
   I32() { this.getName() = "i32" }
 }
 
 /** The builtin `i64` type. */
-class I64 extends BuiltinType {
+class I64 extends IntegralTypeImpl {
   I64() { this.getName() = "i64" }
 }
 
 /** The builtin `i128` type. */
-class I128 extends BuiltinType {
+class I128 extends IntegralTypeImpl {
   I128() { this.getName() = "i128" }
 }
 
 /** The builtin `u8` type. */
-class U8 extends BuiltinType {
+class U8 extends IntegralTypeImpl {
   U8() { this.getName() = "u8" }
 }
 
 /** The builtin `u16` type. */
-class U16 extends BuiltinType {
+class U16 extends IntegralTypeImpl {
   U16() { this.getName() = "u16" }
 }
 
 /** The builtin `u32` type. */
-class U32 extends BuiltinType {
+class U32 extends IntegralTypeImpl {
   U32() { this.getName() = "u32" }
 }
 
 /** The builtin `u64` type. */
-class U64 extends BuiltinType {
+class U64 extends IntegralTypeImpl {
   U64() { this.getName() = "u64" }
 }
 
 /** The builtin `u128` type. */
-class U128 extends BuiltinType {
+class U128 extends IntegralTypeImpl {
   U128() { this.getName() = "u128" }
 }
 
 /** The builtin `usize` type. */
-class Usize extends BuiltinType {
+class Usize extends IntegralTypeImpl {
   Usize() { this.getName() = "usize" }
 }
 
 /** The builtin `isize` type. */
-class Isize extends BuiltinType {
+class Isize extends IntegralTypeImpl {
   Isize() { this.getName() = "isize" }
 }
 
 /** The builtin `f32` type. */
-class F32 extends BuiltinType {
+class F32 extends FloatingPointTypeImpl {
   F32() { this.getName() = "f32" }
 }
 
 /** The builtin `f64` type. */
-class F64 extends BuiltinType {
+class F64 extends FloatingPointTypeImpl {
   F64() { this.getName() = "f64" }
 }