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https://github.com/carbon-language/carbon-lang.git
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Jon Ross-Perkins
9751b4701d
I think there's more we can do here, but this seemed like a good checkpoint to make sure the path I'm going down is roughly what you expected. There's one actual edit in if expression structure to match the increased enforcement.
67 lines
2.5 KiB
C++
67 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/semantics/semantics_context.h"
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namespace Carbon {
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auto SemanticsHandleCallExpression(SemanticsContext& context,
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ParseTree::Node parse_node) -> bool {
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auto refs_id = context.ParamOrArgEnd(
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/*for_args=*/true, ParseNodeKind::CallExpressionStart);
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// TODO: Convert to call expression.
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auto [call_expr_parse_node, name_id] =
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context.node_stack()
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.PopWithParseNode<ParseNodeKind::CallExpressionStart>();
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auto name_node = context.semantics_ir().GetNode(name_id);
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if (name_node.kind() != SemanticsNodeKind::FunctionDeclaration) {
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// TODO: Work on error.
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context.TODO(parse_node, "Not a callable name");
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context.node_stack().Push(parse_node, name_id);
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return true;
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}
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auto function_id = name_node.GetAsFunctionDeclaration();
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const auto& callable = context.semantics_ir().GetFunction(function_id);
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CARBON_DIAGNOSTIC(NoMatchingCall, Error, "No matching callable was found.");
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auto diagnostic =
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context.emitter().Build(call_expr_parse_node, NoMatchingCall);
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if (!context.ImplicitAsForArgs(refs_id, name_node.parse_node(),
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callable.param_refs_id, &diagnostic)) {
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diagnostic.Emit();
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context.node_stack().Push(parse_node, SemanticsNodeId::BuiltinError);
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return true;
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}
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CARBON_CHECK(context.ImplicitAsForArgs(refs_id, name_node.parse_node(),
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callable.param_refs_id,
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/*diagnostic=*/nullptr));
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// TODO: Propagate return types from callable.
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auto call_node_id = context.AddNode(SemanticsNode::Call::Make(
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call_expr_parse_node, callable.return_type_id, refs_id, function_id));
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context.node_stack().Push(parse_node, call_node_id);
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return true;
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}
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auto SemanticsHandleCallExpressionComma(SemanticsContext& context,
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ParseTree::Node /*parse_node*/)
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-> bool {
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context.ParamOrArgComma(/*for_args=*/true);
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return true;
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}
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auto SemanticsHandleCallExpressionStart(SemanticsContext& context,
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ParseTree::Node parse_node) -> bool {
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auto name_id = context.node_stack().Pop<SemanticsNodeId>();
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context.node_stack().Push(parse_node, name_id);
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context.ParamOrArgStart();
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return true;
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}
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} // namespace Carbon
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