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[reference-binding] Add support for inout binding parsing/serialization.

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This commit is contained in:
Michael Gottesman
2023-03-01 13:17:32 -08:00
parent 4b354f6132
commit c97121d3ee
17 changed files with 106 additions and 42 deletions
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31
test/Parse/matching_patterns.swift
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@@ -25,18 +25,23 @@ case 1 + 2:
case square(9):
()
// 'var' and 'let' patterns.
// 'var', 'let', and 'inout' patterns.
case var a:
a = 1
case let a:
a = 1 // expected-error {{cannot assign}}
case var var a: // expected-error {{'var' cannot appear nested inside another 'var' or 'let' pattern}}
case inout a:
a = 1
case var var a: // expected-error {{'var' cannot appear nested inside another 'var', 'let', or 'inout' pattern}}
a += 1
case var let a: // expected-error {{'let' cannot appear nested inside another 'var' or 'let' pattern}}
case var let a: // expected-error {{'let' cannot appear nested inside another 'var', 'let', or 'inout' pattern}}
print(a, terminator: "")
case var (var b): // expected-error {{'var' cannot appear nested inside another 'var'}}
b += 1
case var inout a: // expected-error {{'inout' cannot appear nested inside another 'var', 'let', or 'inout' pattern}}
break
case inout (inout b): // expected-error {{'inout' cannot appear nested inside another 'var', 'let', or 'inout' pattern}}
break
// 'Any' pattern.
case _:
()
@@ -53,6 +58,14 @@ case _: // expected-warning {{case is already handled by previous patterns; cons
()
}
switch (x,x) {
case (inout a, inout a): // expected-error {{invalid redeclaration of 'a'}}
// expected-note @-1 {{'a' previously declared here}}
// expected-warning @-2 {{variable 'a' was never used; consider replacing with '_' or removing it}}
// expected-warning @-3 {{variable 'a' was never used; consider replacing with '_' or removing it}}
break
}
var e : Any = 0
switch e { // expected-error {{switch must be exhaustive}} expected-note{{do you want to add a default clause?}}
@@ -119,6 +132,11 @@ if case let .Naught(value) = n {} // expected-error{{pattern with associated val
if case let .Naught(value1, value2, value3) = n {} // expected-error{{pattern with associated values does not match enum case 'Naught'}}
// expected-note@-1 {{remove associated values to make the pattern match}} {{20-44=}}
if case inout .Naught(value) = n {} // expected-error{{pattern with associated values does not match enum case 'Naught'}}
// expected-note@-1 {{remove associated values to make the pattern match}} {{22-29=}}
if case inout .Naught(value1, value2, value3) = n {} // expected-error{{pattern with associated values does not match enum case 'Naught'}}
// expected-note@-1 {{remove associated values to make the pattern match}} {{22-46=}}
switch n {
@@ -142,7 +160,7 @@ case Voluntary<Int>.Mere,
()
case .Twain,
.Twain(_), // expected-warning {{enum case 'Twain' has 2 associated values; matching them as a tuple is deprecated}}
// expected-note@-69 {{'Twain' declared here}}
// expected-note@-74 {{'Twain' declared here}}
.Twain(_, _),
.Twain(_, _, _): // expected-error{{tuple pattern has the wrong length for tuple type '(Int, Int)'}}
()
@@ -285,6 +303,9 @@ case (_, var e, 3) +++ (1, 2, 3):
// expected-error@-1{{'_' can only appear in a pattern or on the left side of an assignment}}
()
case (let (_, _, _)) + 1:
// expected-error@-1 {{'_' can only appear in a pattern or on the left side of an assignment}}
()
case (inout (_, _, 2)) + 1:
// expected-error@-1 {{'_' can only appear in a pattern or on the left side of an assignment}}
()
}