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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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20
test/expr/unary/if_expr.swift
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@@ -710,12 +710,12 @@ func returnBranches6PoundIf() -> Int {
func returnBranches6PoundIf2() -> Int {
// We don't allow multiple expressions.
let i = if .random() {
let i = if .random() { // expected-error{{expected expression in branch of 'if' expression}}
#if false
print("hello")
0
#endif
} else { // expected-error {{non-expression branch of 'if' expression may only end with a 'throw'}}
} else {
1
}
return i
@@ -849,11 +849,11 @@ func testPoundIfBranch2() -> Int {
}
func testPoundIfBranch3() -> Int {
let x = if .random() {
let x = if .random() { // expected-error{{expected expression in branch of 'if' expression}}
#if false
0
#endif
} else { // expected-error {{non-expression branch of 'if' expression may only end with a 'throw'}}
} else {
0
}
return x
@@ -872,25 +872,25 @@ func testPoundIfBranch4() -> Int {
}
func testPoundIfBranch5() -> Int {
// Not allowed (matches the behavior of implict expression returns)
// Inactive #if regions don't count
if .random() {
#if false
0
#endif
0 // expected-warning {{integer literal is unused}}
0
} else {
1 // expected-warning {{integer literal is unused}}
1
}
}
func testPoundIfBranch6() -> Int {
// Not allowed (matches the behavior of implict expression returns)
// Inactive #if regions don't count
let x = if .random() {
#if false
0
#endif
0 // expected-warning {{integer literal is unused}}
} else { // expected-error {{non-expression branch of 'if' expression may only end with a 'throw'}}
0
} else {
1
}
return x