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Richard Smith
8b59e85b16
For #6830, add support for inline C++ fragments as a declaration rather than as a packaging directive. For now, this uses `inline Cpp <string-literal>;` as syntax. The prior `import Cpp inline <string-literal>;` is left alone for the time being. We can decide separately whether to remove that. `inline Cpp` requires that there was at least one `import Cpp`. It's not clear to me if that's the right design long-term, but it seems reasonable for now. Assisted-by: Gemini via Google Antigravity
44 lines
1.7 KiB
C++
44 lines
1.7 KiB
C++
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#include "toolchain/lex/token_kind.h"
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#include "toolchain/parse/context.h"
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#include "toolchain/parse/handle.h"
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#include "toolchain/parse/node_kind.h"
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#include "toolchain/parse/state.h"
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namespace Carbon::Parse {
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auto HandleInlineDeclAfterIntroducer(Context& context) -> void {
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auto state = context.PopState();
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if (auto cpp_token = context.ConsumeIf(Lex::TokenKind::Cpp)) {
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context.AddLeafNode(NodeKind::CppNameExpr, *cpp_token);
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} else {
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CARBON_DIAGNOSTIC(ExpectedCppAfterInline, Error,
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"expected `Cpp` after `inline`");
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context.emitter().Emit(*context.position(), ExpectedCppAfterInline);
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context.AddNode(NodeKind::InlineCppDecl,
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context.SkipPastLikelyEnd(state.token),
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/*has_error=*/true);
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return;
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}
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if (auto str = context.ConsumeIf(Lex::TokenKind::StringLiteral)) {
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context.AddLeafNode(NodeKind::InlineImportBody, *str);
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context.AddNodeExpectingDeclSemi(state, NodeKind::InlineCppDecl,
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Lex::TokenKind::Inline,
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/*is_def_allowed=*/false);
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} else {
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CARBON_DIAGNOSTIC(ExpectedStringAfterInlineCpp, Error,
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"expected string literal after `inline Cpp`");
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context.emitter().Emit(*context.position(), ExpectedStringAfterInlineCpp);
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context.AddNode(NodeKind::InlineCppDecl,
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context.SkipPastLikelyEnd(state.token),
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/*has_error=*/true);
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}
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}
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} // namespace Carbon::Parse
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