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Issue 8306024: Make native syntax an early error in the preparser. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Unified enums Created 9 years, 2 months ago
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1 // Copyright 2011 the V8 project authors. All rights reserved. 1 // Copyright 2011 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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34 #include "char-predicates.h" 34 #include "char-predicates.h"
35 #include "checks.h" 35 #include "checks.h"
36 #include "globals.h" 36 #include "globals.h"
37 #include "token.h" 37 #include "token.h"
38 #include "unicode-inl.h" 38 #include "unicode-inl.h"
39 #include "utils.h" 39 #include "utils.h"
40 40
41 namespace v8 { 41 namespace v8 {
42 namespace internal { 42 namespace internal {
43 43
44
45 // General collection of bit-flags that can be passed to scanners and
46 // parsers to signify their (initial) mode of operation.
47 enum ParsingFlags {
48 kNoParsingFlags = 0,
49 kAllowLazy = 1,
50 kAllowNativesSyntax = 2,
51 kHarmonyScoping = 4
52 };
53
54
44 // Returns the value (0 .. 15) of a hexadecimal character c. 55 // Returns the value (0 .. 15) of a hexadecimal character c.
45 // If c is not a legal hexadecimal character, returns a value < 0. 56 // If c is not a legal hexadecimal character, returns a value < 0.
46 inline int HexValue(uc32 c) { 57 inline int HexValue(uc32 c) {
47 c -= '0'; 58 c -= '0';
48 if (static_cast<unsigned>(c) <= 9) return c; 59 if (static_cast<unsigned>(c) <= 9) return c;
49 c = (c | 0x20) - ('a' - '0'); // detect 0x11..0x16 and 0x31..0x36. 60 c = (c | 0x20) - ('a' - '0'); // detect 0x11..0x16 and 0x31..0x36.
50 if (static_cast<unsigned>(c) <= 5) return c + 10; 61 if (static_cast<unsigned>(c) <= 5) return c + 10;
51 return -1; 62 return -1;
52 } 63 }
53 64
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555 // line-terminator after the current token, and before the next. 566 // line-terminator after the current token, and before the next.
556 bool has_multiline_comment_before_next_; 567 bool has_multiline_comment_before_next_;
557 // Whether we scan 'let' as a keyword for harmony block scoped 568 // Whether we scan 'let' as a keyword for harmony block scoped
558 // let bindings. 569 // let bindings.
559 bool harmony_scoping_; 570 bool harmony_scoping_;
560 }; 571 };
561 572
562 } } // namespace v8::internal 573 } } // namespace v8::internal
563 574
564 #endif // V8_SCANNER_H_ 575 #endif // V8_SCANNER_H_
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