Syntax refactoring #7657
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Syntax refactoring #7657
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- Break out optional `with` from TemplateBody production
- Disallow `new with { ...}`.
We don't actually solve this one. `given` still applies to all parameters in a clause.
Don't allow extension methods to have type parameters if collective type parameters were already given. The reason to disallow is that we don't support multiple consecutive type argument sections yet. And merging two type parameter sections into one would break a future extension where we do allow multiple consecutive type argument sections.
So far we allowed `given A, B with ... ` but not `given A with B with ... `
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withfrom TemplateBody productionnew with { ...}.withwhen implementing multiple types in a given instancegiven { ... }. andgiven ops: { ... }