mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-25 21:50:12 +01:00
Farzana Ahmed SiddiqueandFarzana Ahmed Siddique
9228487d46
Co-authored-by: Farzana Ahmed Siddique <fasiddique@google.com>
59 lines
2.2 KiB
C++
59 lines
2.2 KiB
C++
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
|
|
// Exceptions. See /LICENSE for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
|
|
#include "toolchain/parser/parse_node_kind.h"
|
|
#include "toolchain/semantics/semantics_context.h"
|
|
#include "toolchain/semantics/semantics_node.h"
|
|
#include "toolchain/semantics/semantics_node_kind.h"
|
|
|
|
namespace Carbon {
|
|
|
|
auto SemanticsHandleArrayExpressionStart(SemanticsContext& /*context*/,
|
|
ParseTree::Node /*parse_node*/)
|
|
-> bool {
|
|
return true;
|
|
}
|
|
|
|
auto SemanticsHandleArrayExpressionSemi(SemanticsContext& context,
|
|
ParseTree::Node parse_node) -> bool {
|
|
context.node_stack().Push(parse_node);
|
|
return true;
|
|
}
|
|
|
|
auto SemanticsHandleArrayExpression(SemanticsContext& context,
|
|
ParseTree::Node parse_node) -> bool {
|
|
// TODO: Handle array type with undefined bound.
|
|
if (context.parse_tree().node_kind(context.node_stack().PeekParseNode()) ==
|
|
ParseNodeKind::ArrayExpressionSemi) {
|
|
context.node_stack().PopAndIgnore();
|
|
context.node_stack().PopAndIgnore();
|
|
return context.TODO(parse_node, "HandleArrayExpressionWithoutBounds");
|
|
}
|
|
|
|
auto bound_node_id = context.node_stack().PopExpression();
|
|
context.node_stack()
|
|
.PopAndDiscardSoloParseNode<ParseNodeKind::ArrayExpressionSemi>();
|
|
;
|
|
auto element_type_node_id = context.node_stack().PopExpression();
|
|
auto bound_node = context.semantics_ir().GetNode(bound_node_id);
|
|
if (bound_node.kind() == SemanticsNodeKind::IntegerLiteral) {
|
|
auto bound_value = context.semantics_ir().GetIntegerLiteral(
|
|
bound_node.GetAsIntegerLiteral());
|
|
if (!bound_value.isNegative()) {
|
|
context.AddNodeAndPush(
|
|
parse_node,
|
|
SemanticsNode::ArrayType::Make(
|
|
parse_node, SemanticsTypeId::TypeType, bound_node_id,
|
|
context.ExpressionAsType(parse_node, element_type_node_id)));
|
|
return true;
|
|
}
|
|
}
|
|
CARBON_DIAGNOSTIC(InvalidArrayExpression, Error, "Invalid array expression.");
|
|
context.emitter().Emit(parse_node, InvalidArrayExpression);
|
|
context.node_stack().Push(parse_node, SemanticsNodeId::BuiltinError);
|
|
return true;
|
|
}
|
|
|
|
} // namespace Carbon
|