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65 lines
2.1 KiB
C++
65 lines
2.1 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/check/context.h"
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namespace Carbon::Check {
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auto HandleImplicitParamListStart(Context& context,
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Parse::ImplicitParamListStartId parse_node)
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-> bool {
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context.PushScope();
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context.node_stack().Push(parse_node);
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context.ParamOrArgStart();
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return true;
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}
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auto HandleImplicitParamList(Context& context,
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Parse::ImplicitParamListId parse_node) -> bool {
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auto refs_id = context.ParamOrArgEnd(Parse::NodeKind::ImplicitParamListStart);
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context.node_stack()
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.PopAndDiscardSoloParseNode<Parse::NodeKind::ImplicitParamListStart>();
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context.node_stack().Push(parse_node, refs_id);
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// The implicit parameter list's scope extends to the end of the following
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// parameter list.
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return true;
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}
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auto HandleTuplePatternStart(Context& context,
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Parse::TuplePatternStartId parse_node) -> bool {
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// A tuple pattern following an implicit parameter list shares the same
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// scope.
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//
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// TODO: For a declaration like
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//
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// fn A(T:! type).B(U:! T).C(x: X(U)) { ... }
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//
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// ... all the earlier parameter should be in scope in the later parameter
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// lists too.
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if (!context.node_stack().PeekIs<Parse::NodeKind::ImplicitParamList>()) {
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context.PushScope();
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}
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context.node_stack().Push(parse_node);
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context.ParamOrArgStart();
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return true;
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}
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auto HandlePatternListComma(Context& context,
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Parse::PatternListCommaId /*parse_node*/) -> bool {
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context.ParamOrArgComma();
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return true;
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}
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auto HandleTuplePattern(Context& context, Parse::TuplePatternId parse_node)
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-> bool {
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auto refs_id = context.ParamOrArgEnd(Parse::NodeKind::TuplePatternStart);
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context.PopScope();
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context.node_stack()
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.PopAndDiscardSoloParseNode<Parse::NodeKind::TuplePatternStart>();
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context.node_stack().Push(parse_node, refs_id);
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return true;
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}
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} // namespace Carbon::Check
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