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Extend deduced and regular parameter handling to types. (#2684)

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This makes it possible to specify both deduced and regular parameters on types. It reorganizes the handling of parameter lists in order to allow more reuse of code in this approach. Both functions and types use the new DeclarationNameAndParams handling. Overall the goal here is to take advantage of commonality in structure.

Regarding destructors, the likely approach would be to use ParameterListAsDeduced directly because `destructor` is a keyword with no declaration name and no regular parameters.
This commit is contained in:
Jon Ross-Perkins
2023-03-16 09:06:45 -07:00
committed by GitHub
parent 584a50d0dc
commit 7d553107dd
31 changed files with 831 additions and 415 deletions
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toolchain/parser/testdata/function/declaration/fail_missing_deduced_close.carbon
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@@ -17,4 +17,4 @@
// CHECK:STDERR: {{.*}}/toolchain/parser/testdata/function/declaration/fail_missing_deduced_close.carbon:[[@LINE+2]]:7: Closing symbol does not match most recent opening symbol.
// CHECK:STDERR: {{.*}}/toolchain/parser/testdata/function/declaration/fail_missing_deduced_close.carbon:[[@LINE+1]]:8: Expected parameter declaration.
fn Div[();
// CHECK:STDERR: {{.*}}/toolchain/parser/testdata/function/declaration/fail_missing_deduced_close.carbon:[[@LINE+0]]:156: Expected `(` after function name.
// CHECK:STDERR: {{.*}}/toolchain/parser/testdata/function/declaration/fail_missing_deduced_close.carbon:[[@LINE+0]]:181: A `(` for parameters is required after deduced parameters.