v8  3.14.5(node0.10.28)
V8 is Google's open source JavaScript engine
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Macros Pages
flags.h
Go to the documentation of this file.
1 // Copyright 2006-2008 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are
4 // met:
5 //
6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided
11 // with the distribution.
12 // * Neither the name of Google Inc. nor the names of its
13 // contributors may be used to endorse or promote products derived
14 // from this software without specific prior written permission.
15 //
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 #ifndef V8_FLAGS_H_
28 #define V8_FLAGS_H_
29 
30 namespace v8 {
31 namespace internal {
32 
33 // Declare all of our flags.
34 #define FLAG_MODE_DECLARE
35 #include "flag-definitions.h"
36 
37 // The global list of all flags.
38 class FlagList {
39  public:
40  // The list of all flags with a value different from the default
41  // and their values. The format of the list is like the format of the
42  // argv array passed to the main function, e.g.
43  // ("--prof", "--log-file", "v8.prof", "--nolazy").
44  //
45  // The caller is responsible for disposing the list, as well
46  // as every element of it.
47  static List<const char*>* argv();
48 
49  // Set the flag values by parsing the command line. If remove_flags is
50  // set, the flags and associated values are removed from (argc,
51  // argv). Returns 0 if no error occurred. Otherwise, returns the argv
52  // index > 0 for the argument where an error occurred. In that case,
53  // (argc, argv) will remain unchanged independent of the remove_flags
54  // value, and no assumptions about flag settings should be made.
55  //
56  // The following syntax for flags is accepted (both '-' and '--' are ok):
57  //
58  // --flag (bool flags only)
59  // --noflag (bool flags only)
60  // --flag=value (non-bool flags only, no spaces around '=')
61  // --flag value (non-bool flags only)
62  // -- (equivalent to --js_arguments, captures all remaining args)
63  static int SetFlagsFromCommandLine(int* argc, char** argv, bool remove_flags);
64 
65  // Set the flag values by parsing the string str. Splits string into argc
66  // substrings argv[], each of which consisting of non-white-space chars,
67  // and then calls SetFlagsFromCommandLine() and returns its result.
68  static int SetFlagsFromString(const char* str, int len);
69 
70  // Reset all flags to their default value.
71  static void ResetAllFlags();
72 
73  // Print help to stdout with flags, types, and default values.
74  static void PrintHelp();
75 
76  // Set flags as consequence of being implied by another flag.
77  static void EnforceFlagImplications();
78 };
79 
80 } } // namespace v8::internal
81 
82 #endif // V8_FLAGS_H_
static void PrintHelp()
Definition: flags.cc:519
static void ResetAllFlags()
Definition: flags.cc:511
static void EnforceFlagImplications()
Definition: flags.cc:542
static int SetFlagsFromString(const char *str, int len)
Definition: flags.cc:475
static List< const char * > * argv()
Definition: flags.cc:230
static int SetFlagsFromCommandLine(int *argc, char **argv, bool remove_flags)
Definition: flags.cc:343