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Semantics for array type (#3087)

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Co-authored-by: Farzana Ahmed Siddique <fasiddique@google.com>
This commit is contained in:
Farzana Ahmed Siddique
2023-08-11 23:06:13 +00:00
committed by GitHub
co-authored by Farzana Ahmed Siddique
parent 90cca11ea3
commit 9228487d46
16 changed files with 836 additions and 5 deletions
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toolchain/semantics/semantics_handle_array.cpp
+39 -5
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@@ -2,23 +2,57 @@
// 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 context.TODO(parse_node, "HandleArrayExpressionStart");
auto SemanticsHandleArrayExpressionStart(SemanticsContext& /*context*/,
ParseTree::Node /*parse_node*/)
-> bool {
return true;
}
auto SemanticsHandleArrayExpressionSemi(SemanticsContext& context,
ParseTree::Node parse_node) -> bool {
return context.TODO(parse_node, "HandleArrayExpressionSemi");
context.node_stack().Push(parse_node);
return true;
}
auto SemanticsHandleArrayExpression(SemanticsContext& context,
ParseTree::Node parse_node) -> bool {
return context.TODO(parse_node, "HandleArrayExpression");
// 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