[Lldb-commits] [lldb] [LLDB] Add DIL code for handling plain variable names. (PR #120971)

[Pavel Labath via lldb-commits]

================
@@ -0,0 +1,104 @@
+//===-- DILParser.h ---------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLDB_VALUEOBJECT_DILPARSER_H
+#define LLDB_VALUEOBJECT_DILPARSER_H
+
+#include "lldb/Target/ExecutionContextScope.h"
+#include "lldb/Utility/Status.h"
+#include "lldb/ValueObject/DILAST.h"
+#include "lldb/ValueObject/DILLexer.h"
+#include <memory>
+#include <optional>
+#include <string>
+#include <tuple>
+#include <vector>
+
+namespace lldb_private::dil {
+
+enum class ErrorCode : unsigned char {
+  kOk = 0,
+  kInvalidExpressionSyntax,
+  kUndeclaredIdentifier,
+  kUnknown,
+};
+
+std::string FormatDiagnostics(llvm::StringRef input_expr,
+                              const std::string &message, uint32_t loc,
+                              uint16_t err_len);
+
+/// Pure recursive descent parser for C++ like expressions.
+/// EBNF grammar for the parser is described in lldb/docs/dil-expr-lang.ebnf
+class DILParser {
+public:
+  static llvm::Expected<ASTNodeUP> Parse(llvm::StringRef dil_input_expr,
+                                         DILLexer lexer,
+                                         std::shared_ptr<StackFrame> frame_sp,
+                                         lldb::DynamicValueType use_dynamic,
+                                         bool use_synthetic, bool fragile_ivar,
+                                         bool check_ptr_vs_member);
+
+  ~DILParser() = default;
+
+  bool UseSynthetic() { return m_use_synthetic; }
+
+  lldb::DynamicValueType UseDynamic() { return m_use_dynamic; }
+
+  using PtrOperator = std::tuple<Token::Kind, uint32_t>;
----------------
labath wrote:

unused?

https://github.com/llvm/llvm-project/pull/120971