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https://github.com/carbon-language/carbon-lang.git
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Jon Ross-Perkins
8ad08e34e2
This is addressing an issue left behind by the context switch, removing a few diagnostics that had been in the header rather than figuring out proper homes. I'm splitting one for semis a little further, sharing one, and then the other two are actually able to be moved into more specific homes as-is (one is only used in one place, clearly an oversight that it wasn't there already).
65 lines
2.5 KiB
C++
65 lines
2.5 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/parser/parser_context.h"
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namespace Carbon {
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// Handles DeclarationNameAndParamsAs(Optional|Required).
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static auto ParserHandleDeclarationNameAndParams(ParserContext& context,
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bool params_required) -> void {
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auto state = context.PopState();
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if (!context.ConsumeAndAddLeafNodeIf(TokenKind::Identifier,
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ParseNodeKind::DeclaredName)) {
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CARBON_DIAGNOSTIC(ExpectedDeclarationName, Error,
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"`{0}` introducer should be followed by a name.",
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TokenKind);
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context.emitter().Emit(*context.position(), ExpectedDeclarationName,
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context.tokens().GetKind(state.token));
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context.ReturnErrorOnState();
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return;
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}
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if (context.PositionIs(TokenKind::OpenSquareBracket)) {
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context.PushState(ParserState::DeclarationNameAndParamsAfterDeduced);
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context.PushState(ParserState::ParameterListAsDeduced);
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} else if (context.PositionIs(TokenKind::OpenParen)) {
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context.PushState(ParserState::ParameterListAsRegular);
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} else if (params_required) {
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CARBON_DIAGNOSTIC(ParametersRequiredByIntroducer, Error,
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"`{0}` requires a `(` for parameters.", TokenKind);
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context.emitter().Emit(*context.position(), ParametersRequiredByIntroducer,
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context.tokens().GetKind(state.token));
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context.ReturnErrorOnState();
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}
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}
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auto ParserHandleDeclarationNameAndParamsAsOptional(ParserContext& context)
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-> void {
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ParserHandleDeclarationNameAndParams(context, /*params_required=*/false);
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}
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auto ParserHandleDeclarationNameAndParamsAsRequired(ParserContext& context)
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-> void {
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ParserHandleDeclarationNameAndParams(context, /*params_required=*/true);
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}
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auto ParserHandleDeclarationNameAndParamsAfterDeduced(ParserContext& context)
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-> void {
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context.PopAndDiscardState();
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if (context.PositionIs(TokenKind::OpenParen)) {
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context.PushState(ParserState::ParameterListAsRegular);
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} else {
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CARBON_DIAGNOSTIC(
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ParametersRequiredByDeduced, Error,
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"A `(` for parameters is required after deduced parameters.");
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context.emitter().Emit(*context.position(), ParametersRequiredByDeduced);
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context.ReturnErrorOnState();
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}
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}
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} // namespace Carbon
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