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Fold deduced pattern parsing into the general pattern parsing. (#2649)

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Depends on #2646 

Right now, deduced parameter handling is very narrow to `self` support. This folds it into pattern handling, which should eventually be a superset of deduced parameter support, so this will avoid more duplication of logic.

Note, this subtly adds handling of multiple deduced parameters, but not generic parameters (`:!`) so it's still not quite right.
This commit is contained in:
Jon Ross-Perkins
2023-03-07 09:27:55 -08:00
committed by GitHub
parent f1c18346b6
commit b35e803a7f
18 changed files with 389 additions and 216 deletions
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toolchain/parser/testdata/generics/interface/basic.carbon
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+2 -47
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@@ -38,56 +38,11 @@
// CHECK:STDOUT: {kind: 'SelfType', text: 'Self'},
// CHECK:STDOUT: {kind: 'ReturnType', text: '->', subtree_size: 2},
// CHECK:STDOUT: {kind: 'FunctionDeclaration', text: ';', subtree_size: 15},
// CHECK:STDOUT: {kind: 'FunctionIntroducer', text: 'fn'},
// CHECK:STDOUT: {kind: 'DeclaredName', text: 'Sub'},
// CHECK:STDOUT: {kind: 'DeducedParameterListStart', text: '['},
// CHECK:STDOUT: {kind: 'SelfDeducedParameter', text: ':'},
// CHECK:STDOUT: {kind: 'SelfType', text: 'Self'},
// CHECK:STDOUT: {kind: 'PostfixOperator', text: '*', subtree_size: 2},
// CHECK:STDOUT: {kind: 'PatternBinding', text: 'self', subtree_size: 4},
// CHECK:STDOUT: {kind: 'Address', text: 'addr', subtree_size: 5},
// CHECK:STDOUT: {kind: 'DeducedParameterList', text: ']', subtree_size: 7},
// CHECK:STDOUT: {kind: 'ParameterListStart', text: '('},
// CHECK:STDOUT: {kind: 'DeclaredName', text: 'b'},
// CHECK:STDOUT: {kind: 'SelfType', text: 'Self'},
// CHECK:STDOUT: {kind: 'PatternBinding', text: ':', subtree_size: 3},
// CHECK:STDOUT: {kind: 'ParameterList', text: ')', subtree_size: 5},
// CHECK:STDOUT: {kind: 'SelfType', text: 'Self'},
// CHECK:STDOUT: {kind: 'ReturnType', text: '->', subtree_size: 2},
// CHECK:STDOUT: {kind: 'FunctionDeclaration', text: ';', subtree_size: 17},
// CHECK:STDOUT: {kind: 'FunctionIntroducer', text: 'fn'},
// CHECK:STDOUT: {kind: 'DeclaredName', text: 'Sub'},
// CHECK:STDOUT: {kind: 'DeducedParameterListStart', text: '['},
// CHECK:STDOUT: {kind: 'SelfDeducedParameter', text: ':'},
// CHECK:STDOUT: {kind: 'NameReference', text: 'foo'},
// CHECK:STDOUT: {kind: 'PostfixOperator', text: '*', subtree_size: 2},
// CHECK:STDOUT: {kind: 'PatternBinding', text: 'self', subtree_size: 4},
// CHECK:STDOUT: {kind: 'Address', text: 'addr', subtree_size: 5},
// CHECK:STDOUT: {kind: 'DeducedParameterList', text: ']', subtree_size: 7},
// CHECK:STDOUT: {kind: 'ParameterListStart', text: '('},
// CHECK:STDOUT: {kind: 'DeclaredName', text: 'b'},
// CHECK:STDOUT: {kind: 'SelfType', text: 'Self'},
// CHECK:STDOUT: {kind: 'PatternBinding', text: ':', subtree_size: 3},
// CHECK:STDOUT: {kind: 'ParameterList', text: ')', subtree_size: 5},
// CHECK:STDOUT: {kind: 'SelfType', text: 'Self'},
// CHECK:STDOUT: {kind: 'ReturnType', text: '->', subtree_size: 2},
// CHECK:STDOUT: {kind: 'FunctionDeclaration', text: ';', subtree_size: 17},
// CHECK:STDOUT: {kind: 'FunctionIntroducer', text: 'fn'},
// CHECK:STDOUT: {kind: 'DeclaredName', text: 'FooFactory'},
// CHECK:STDOUT: {kind: 'ParameterListStart', text: '('},
// CHECK:STDOUT: {kind: 'ParameterList', text: ')', subtree_size: 2},
// CHECK:STDOUT: {kind: 'SelfType', text: 'Self'},
// CHECK:STDOUT: {kind: 'ReturnType', text: '->', subtree_size: 2},
// CHECK:STDOUT: {kind: 'FunctionDeclaration', text: ';', subtree_size: 7},
// CHECK:STDOUT: {kind: 'InterfaceDefinition', text: '}', subtree_size: 75},
// CHECK:STDOUT: {kind: 'InterfaceDefinition', text: '}', subtree_size: 34},
// CHECK:STDOUT: {kind: 'FileEnd', text: ''},
// CHECK:STDOUT: ]
interface Foo {
fn Add[self: Self](b: Self) -> Self;
fn Add[self: foo](b: Self) -> Self;
fn Sub[addr self: Self*](b: Self) -> Self;
fn Sub[addr self: foo*](b: Self) -> Self;
fn FooFactory() -> Self;
}