deps: update V8 to 6.7.288.43

PR-URL: https://github.com/nodejs/node/pull/19989
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Matheus Marchini <matheus@sthima.com>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Myles Borins <myles.borins@gmail.com>

1 files changed, 70 insertions, 0 deletions

diff --git a/deps/v8/third_party/antlr4/runtime/Cpp/runtime/src/atn/AmbiguityInfo.h b/deps/v8/third_party/antlr4/runtime/Cpp/runtime/src/atn/AmbiguityInfo.h
new file mode 100644
index 0000000000..65990347ae
--- /dev/null
+++ b/deps/v8/third_party/antlr4/runtime/Cpp/runtime/src/atn/AmbiguityInfo.h
@@ -0,0 +1,70 @@
+/* Copyright (c) 2012-2017 The ANTLR Project. All rights reserved.
+ * Use of this file is governed by the BSD 3-clause license that
+ * can be found in the LICENSE.txt file in the project root.
+ */
+
+#pragma once
+
+#include "atn/DecisionEventInfo.h"
+#include "support/BitSet.h"
+
+namespace antlr4 {
+namespace atn {
+
+/// <summary>
+/// This class represents profiling event information for an ambiguity.
+/// Ambiguities are decisions where a particular input resulted in an SLL
+/// conflict, followed by LL prediction also reaching a conflict state
+/// (indicating a true ambiguity in the grammar).
+///
+/// <para>
+/// This event may be reported during SLL prediction in cases where the
+/// conflicting SLL configuration set provides sufficient information to
+/// determine that the SLL conflict is truly an ambiguity. For example, if none
+/// of the ATN configurations in the conflicting SLL configuration set have
+/// traversed a global follow transition (i.e.
+/// <seealso cref="ATNConfig#reachesIntoOuterContext"/> is 0 for all
+/// configurations), then the result of SLL prediction for that input is known
+/// to be equivalent to the result of LL prediction for that input.</para>
+///
+/// <para>
+/// In some cases, the minimum represented alternative in the conflicting LL
+/// configuration set is not equal to the minimum represented alternative in the
+/// conflicting SLL configuration set. Grammars and inputs which result in this
+/// scenario are unable to use <seealso cref="PredictionMode#SLL"/>, which in
+/// turn means they cannot use the two-stage parsing strategy to improve parsing
+/// performance for that input.</para>
+/// </summary>
+/// <seealso cref= ParserATNSimulator#reportAmbiguity </seealso>
+/// <seealso cref= ANTLRErrorListener#reportAmbiguity
+///
+/// @since 4.3 </seealso>
+class ANTLR4CPP_PUBLIC AmbiguityInfo : public DecisionEventInfo {
+ public:
+  /// The set of alternative numbers for this decision event that lead to a
+  /// valid parse.
+  antlrcpp::BitSet ambigAlts;
+
+  /// <summary>
+  /// Constructs a new instance of the <seealso cref="AmbiguityInfo"/> class
+  /// with the specified detailed ambiguity information.
+  /// </summary>
+  /// <param name="decision"> The decision number </param>
+  /// <param name="configs"> The final configuration set identifying the
+  /// ambiguous alternatives for the current input </param> <param
+  /// name="ambigAlts"> The set of alternatives in the decision that lead to a
+  /// valid parse.
+  ///                  The predicted alt is the min(ambigAlts) </param>
+  /// <param name="input"> The input token stream </param>
+  /// <param name="startIndex"> The start index for the current prediction
+  /// </param> <param name="stopIndex"> The index at which the ambiguity was
+  /// identified during prediction </param> <param name="fullCtx"> {@code true}
+  /// if the ambiguity was identified during LL prediction; otherwise, {@code
+  /// false} if the ambiguity was identified during SLL prediction </param>
+  AmbiguityInfo(size_t decision, ATNConfigSet* configs,
+                const antlrcpp::BitSet& ambigAlts, TokenStream* input,
+                size_t startIndex, size_t stopIndex, bool fullCtx);
+};
+
+}  // namespace atn
+}  // namespace antlr4