[debugger] infrastructure for side-effect-free debug-evaluate.

src/messages.h

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // The infrastructure used for (localized) message reporting in V8.
 //
 // Note: there's a big unresolved issue about ownership of the data
 // structures used by this framework.
 
 #ifndef V8_MESSAGES_H_
@@ skipping 636 matching lines @@
   T(UnterminatedRegExp, "Invalid regular expression: missing /")               \
   T(UnterminatedTemplate, "Unterminated template literal")                     \
   T(UnterminatedTemplateExpr, "Missing } in template expression")              \
   T(FoundNonCallableHasInstance, "Found non-callable @@hasInstance")           \
   T(InvalidHexEscapeSequence, "Invalid hexadecimal escape sequence")           \
   T(InvalidUnicodeEscapeSequence, "Invalid Unicode escape sequence")           \
   T(UndefinedUnicodeCodePoint, "Undefined Unicode code-point")                 \
   T(YieldInParameter, "Yield expression not allowed in formal parameter")      \
   /* EvalError */                                                              \
   T(CodeGenFromStrings, "%")                                                   \
+  T(ReadOnlyDebugEvaluate, "debug-evaluate may cause side-effects")            \

[jgruber, 2017/01/10 12:46:38]

I'd rephrase this as 'Encountered possible side-effect in debug-evaluate' or
similar.

[Yang, 2017/01/10 14:14:06]

Done.

   /* URIError */                                                               \
   T(URIMalformed, "URI malformed")                                             \
   /* Wasm errors (currently Error) */                                          \
   T(WasmTrapUnreachable, "unreachable")                                        \
   T(WasmTrapMemOutOfBounds, "memory access out of bounds")                     \
   T(WasmTrapDivByZero, "divide by zero")                                       \
   T(WasmTrapDivUnrepresentable, "divide result unrepresentable")               \
   T(WasmTrapRemByZero, "remainder by zero")                                    \
   T(WasmTrapFloatUnrepresentable, "integer result unrepresentable")            \
   T(WasmTrapFuncInvalid, "invalid function")                                   \
@@ skipping 62 matching lines @@
                                         const MessageLocation* loc,
                                         Handle<Object> message_obj,
                                         v8::Local<v8::Value> api_exception_obj);
 };
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_MESSAGES_H_