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https://github.com/carbon-language/carbon-lang.git
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Jon Ross-Perkins
bd4e22001f
I'm adding a separate function for this instead of adding a bool to AddToNameLookup because this way I don't need to pass in a parse node.
80 lines
3.0 KiB
C++
80 lines
3.0 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/semantics/semantics_context.h"
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namespace Carbon {
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auto SemanticsHandleFunctionDeclaration(SemanticsContext& context,
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ParseTree::Node parse_node) -> bool {
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return context.TODO(parse_node, "HandleFunctionDeclaration");
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}
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auto SemanticsHandleFunctionDefinition(SemanticsContext& context,
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ParseTree::Node parse_node) -> bool {
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// Merges code block children up under the FunctionDefinitionStart.
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while (context.parse_tree().node_kind(context.node_stack().PeekParseNode()) !=
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ParseNodeKind::FunctionDefinitionStart) {
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context.node_stack().PopAndIgnore();
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}
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auto decl_id =
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context.node_stack().PopForNodeId(ParseNodeKind::FunctionDefinitionStart);
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context.return_scope_stack().pop_back();
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context.PopScope();
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auto block_id = context.node_block_stack().Pop();
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context.AddNode(
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SemanticsNode::FunctionDefinition::Make(parse_node, decl_id, block_id));
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context.node_stack().Push(parse_node);
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return true;
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}
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auto SemanticsHandleFunctionDefinitionStart(SemanticsContext& context,
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ParseTree::Node parse_node)
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-> bool {
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SemanticsNodeId return_type_id = SemanticsNodeId::Invalid;
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if (context.parse_tree().node_kind(context.node_stack().PeekParseNode()) ==
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ParseNodeKind::ReturnType) {
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return_type_id =
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context.node_stack().PopForNodeId(ParseNodeKind::ReturnType);
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}
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auto param_refs_id =
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context.node_stack().PopForNodeBlockId(ParseNodeKind::ParameterList);
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auto name_node =
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context.node_stack().PopForSoloParseNode(ParseNodeKind::DeclaredName);
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auto fn_node = context.node_stack().PopForSoloParseNode(
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ParseNodeKind::FunctionIntroducer);
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auto name_str = context.parse_tree().GetNodeText(name_node);
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auto name_id = context.semantics().AddString(name_str);
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auto callable_id = context.semantics().AddCallable(
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{.param_refs_id = param_refs_id, .return_type_id = return_type_id});
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auto decl_id = context.AddNode(
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SemanticsNode::FunctionDeclaration::Make(fn_node, name_id, callable_id));
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context.AddNameToLookup(name_node, name_id, decl_id);
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context.node_block_stack().Push();
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context.PushScope();
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for (auto ref_id : context.semantics().GetNodeBlock(param_refs_id)) {
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auto ref = context.semantics().GetNode(ref_id);
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auto [name_id, target_id] = ref.GetAsBindName();
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context.AddNameToLookupIgnoreConflicts(name_id, target_id);
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}
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context.return_scope_stack().push_back(decl_id);
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context.node_stack().Push(parse_node, decl_id);
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return true;
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}
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auto SemanticsHandleFunctionIntroducer(SemanticsContext& context,
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ParseTree::Node parse_node) -> bool {
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// No action, just a bracketing node.
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context.node_stack().Push(parse_node);
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return true;
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}
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} // namespace Carbon
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