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Stop parsing into IfConfiDecl nodes in the C++ parser

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When parsing #if...#endif regions, parse the active clause directly into
place in the AST without ever producing an IfConfigDecl instance.
This commit is contained in:
Doug Gregor
2024-09-18 20:20:00 -07:00
parent 4bb9a587fa
commit d762dd53f8
11 changed files with 105 additions and 115 deletions
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17
test/expr/unary/switch_expr.swift
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@@ -855,14 +855,14 @@ func returnBranches6PoundIf() -> Int {
}
func returnBranches6PoundIf2() -> Int {
// We don't allow multiple expressions.
// We don't allow multiple expressions, but inactive #ifs don't count.
let i = switch Bool.random() {
case true:
#if false
print("hello")
0
#endif
// expected-error@-1 {{non-expression branch of 'switch' expression may only end with a 'throw' or 'fallthrough'}}
// expected-error@-1 {{expected expression in branch of 'switch' expression}}
case false:
1
}
@@ -1071,7 +1071,7 @@ func testPoundIfBranch3() -> Int {
#if false
0
#endif
// expected-error@-1 {{non-expression branch of 'switch' expression may only end with a 'throw' or 'fallthrough'}}
// expected-error@-1 {{expected expression in branch of 'switch' expression}}
case false:
0
}
@@ -1092,27 +1092,26 @@ func testPoundIfBranch4() -> Int {
}
func testPoundIfBranch5() -> Int {
// Not allowed (matches the behavior of implict expression returns)
// Okay, inactive #ifs don't count.
switch Bool.random() {
case true:
#if false
0
#endif
0 // expected-warning {{integer literal is unused}}
0
case false:
1 // expected-warning {{integer literal is unused}}
1
}
}
func testPoundIfBranch6() -> Int {
// Not allowed (matches the behavior of implict expression returns)
// Okay, inactive #ifs don't count.
let x = switch Bool.random() {
case true:
#if false
0
#endif
0 // expected-warning {{integer literal is unused}}
// expected-error@-1 {{non-expression branch of 'switch' expression may only end with a 'throw' or 'fallthrough'}}
0
case false:
1
}