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[AST] Introduce CaseStmt::createImplicit

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This allows us to re-use the same logic to create the case body
variables.
This commit is contained in:
Hamish Knight
2025-09-09 13:48:40 +01:00
parent 245e2874ae
commit c02c69a783
9 changed files with 55 additions and 131 deletions
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23
lib/Sema/DerivedConformance/DerivedConformanceCodable.cpp
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@@ -946,27 +946,10 @@ createEnumSwitch(ASTContext &C, DeclContext *DC, Expr *expr, EnumDecl *enumDecl,
// .<elt>(let a0, let a1, ...)
SmallVector<VarDecl *, 3> payloadVars;
Pattern *subpattern = nullptr;
ArrayRef<VarDecl *> caseBodyVarDecls;
if (createSubpattern) {
subpattern = DerivedConformance::enumElementPayloadSubpattern(
elt, 'a', DC, payloadVars, /* useLabels */ true);
auto hasBoundDecls = !payloadVars.empty();
if (hasBoundDecls) {
// We allocated a direct copy of our var decls for the case
// body.
auto copy = C.Allocate<VarDecl *>(payloadVars.size());
for (unsigned i : indices(payloadVars)) {
auto *vOld = payloadVars[i];
auto *vNew = new (C) VarDecl(
/*IsStatic*/ false, vOld->getIntroducer(), vOld->getNameLoc(),
vOld->getName(), vOld->getDeclContext());
vNew->setImplicit();
copy[i] = vNew;
}
caseBodyVarDecls = copy;
}
}
// CodingKeys.x
@@ -985,10 +968,8 @@ createEnumSwitch(ASTContext &C, DeclContext *DC, Expr *expr, EnumDecl *enumDecl,
subpattern, DC);
auto labelItem = CaseLabelItem(pat);
auto stmt =
CaseStmt::create(C, CaseParentKind::Switch, SourceLoc(), labelItem,
SourceLoc(), SourceLoc(), caseBody,
caseBodyVarDecls);
auto stmt = CaseStmt::createImplicit(C, CaseParentKind::Switch, labelItem,
caseBody);
cases.push_back(stmt);
}
}