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| 1 | namespace IR.Values is | |
| 2 | use TypeTyped = Semantic.Types.Typed | |
| 3 | use Semantic.Types.Type | |
| 4 | ||
| 5 | // `a =~ b` where both operands are a bare type parameter: no member | |
| 6 | // operator can resolve statically, so the comparison goes through | |
| 7 | // `EqualityComparer[T].Default`. That reaches a user-written `=~` | |
| 8 | // through the synthesized `Equals` bridge where the instantiation | |
| 9 | // declares one, and the runtime's own comparers give every other | |
| 10 | // instantiation its natural value equality. | |
| 11 | class EQUALITY_COMPARISON: Value, TypeTyped is | |
| 12 | left: Value | |
| 13 | right: Value | |
| 14 | comparer_type: Type | |
| 15 | type: Type | |
| 16 | ||
| 17 | init(left: Value, right: Value, comparer_type: Type, type: Type) is | |
| 18 | super.init() | |
| 19 | ||
| 20 | self.left = left | |
| 21 | self.right = right | |
| 22 | self.comparer_type = comparer_type | |
| 23 | self.type = type | |
| 24 | si | |
| 25 | ||
| 26 | gen(context: IR.CONTEXT) is | |
| 27 | let body = context.current_srm_body_emitter! | |
| 28 | ||
| 29 | body.call(context.resolve_equality_comparer_default(comparer_type)) | |
| 30 | ||
| 31 | gen(left, context) | |
| 32 | gen(right, context) | |
| 33 | ||
| 34 | body.call_virtual(context.resolve_equality_comparer_equals(comparer_type)) | |
| 35 | si | |
| 36 | ||
| 37 | to_string() -> string => | |
| 38 | "equality-comparison[{comparer_type}]({left}, {right})" | |
| 39 | si | |
| 40 | si |