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Track the start of a signature more accurately (#6760)

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This change ensures that a function signature always starts with an
`IdentifierNameMaybeBeforeSignature` node (renamed from
`IdentifierNameBeforeParams`), even in the case of function declarations
like `fn F -> T` that have no parameter list. As a consequence, this
ensures that we push new entries onto `pattern_block_stack` and
`full_pattern_stack` when we start processing the function signature.
This commit is contained in:
Geoff Romer
2026-02-23 22:46:03 +00:00
committed by GitHub
parent 375a736c42
commit 4a0cf6c1fb
282 changed files with 1041 additions and 1039 deletions
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toolchain/parse/testdata/class/fail_modifiers.carbon
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+2 -2
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@@ -39,7 +39,7 @@ class C {
// CHECK:STDOUT: {kind: 'FileStart', text: ''},
// CHECK:STDOUT: {kind: 'ClassIntroducer', text: 'class'},
// CHECK:STDOUT: {kind: 'VirtualModifier', text: 'virtual'},
// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeParams', text: 'B'},
// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeSignature', text: 'B'},
// CHECK:STDOUT: {kind: 'ClassDecl', text: 'B', has_error: yes, subtree_size: 4},
// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
// CHECK:STDOUT: ]
@@ -56,7 +56,7 @@ class C {
// CHECK:STDOUT: parse_tree: [
// CHECK:STDOUT: {kind: 'FileStart', text: ''},
// CHECK:STDOUT: {kind: 'ClassIntroducer', text: 'class'},
// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeParams', text: 'C'},
// CHECK:STDOUT: {kind: 'IdentifierNameNotBeforeSignature', text: 'C'},
// CHECK:STDOUT: {kind: 'ClassDefinitionStart', text: '{', subtree_size: 3},
// CHECK:STDOUT: {kind: 'AdaptIntroducer', text: 'adapt'},
// CHECK:STDOUT: {kind: 'ExtendModifier', text: 'extend'},