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Issue 418143007: FYI Implementing 'super' keyword (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Use private own symbol for [[HomeObject]] Created 6 years, 4 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 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 // Features shared by parsing and pre-parsing scanners. 5 // Features shared by parsing and pre-parsing scanners.
6 6
7 #include <cmath> 7 #include <cmath>
8 8
9 #include "src/v8.h" 9 #include "src/v8.h"
10 10
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894 Advance(); 894 Advance();
895 uc32 result = ScanHexNumber(4); 895 uc32 result = ScanHexNumber(4);
896 if (result < 0) PushBack('u'); 896 if (result < 0) PushBack('u');
897 return result; 897 return result;
898 } 898 }
899 899
900 900
901 // ---------------------------------------------------------------------------- 901 // ----------------------------------------------------------------------------
902 // Keyword Matcher 902 // Keyword Matcher
903 903
904 #define KEYWORDS(KEYWORD_GROUP, KEYWORD) \ 904 #define KEYWORDS(KEYWORD_GROUP, KEYWORD) \
905 KEYWORD_GROUP('b') \ 905 KEYWORD_GROUP('b') \
906 KEYWORD("break", Token::BREAK) \ 906 KEYWORD("break", Token::BREAK) \
907 KEYWORD_GROUP('c') \ 907 KEYWORD_GROUP('c') \
908 KEYWORD("case", Token::CASE) \ 908 KEYWORD("case", Token::CASE) \
909 KEYWORD("catch", Token::CATCH) \ 909 KEYWORD("catch", Token::CATCH) \
910 KEYWORD("class", Token::FUTURE_RESERVED_WORD) \ 910 KEYWORD("class", Token::FUTURE_RESERVED_WORD) \
911 KEYWORD("const", Token::CONST) \ 911 KEYWORD("const", Token::CONST) \
912 KEYWORD("continue", Token::CONTINUE) \ 912 KEYWORD("continue", Token::CONTINUE) \
913 KEYWORD_GROUP('d') \ 913 KEYWORD_GROUP('d') \
914 KEYWORD("debugger", Token::DEBUGGER) \ 914 KEYWORD("debugger", Token::DEBUGGER) \
915 KEYWORD("default", Token::DEFAULT) \ 915 KEYWORD("default", Token::DEFAULT) \
916 KEYWORD("delete", Token::DELETE) \ 916 KEYWORD("delete", Token::DELETE) \
917 KEYWORD("do", Token::DO) \ 917 KEYWORD("do", Token::DO) \
918 KEYWORD_GROUP('e') \ 918 KEYWORD_GROUP('e') \
919 KEYWORD("else", Token::ELSE) \ 919 KEYWORD("else", Token::ELSE) \
920 KEYWORD("enum", Token::FUTURE_RESERVED_WORD) \ 920 KEYWORD("enum", Token::FUTURE_RESERVED_WORD) \
921 KEYWORD("export", harmony_modules \ 921 KEYWORD("export", \
922 ? Token::EXPORT : Token::FUTURE_RESERVED_WORD) \ 922 harmony_modules ? Token::EXPORT : Token::FUTURE_RESERVED_WORD) \
923 KEYWORD("extends", Token::FUTURE_RESERVED_WORD) \ 923 KEYWORD("extends", Token::FUTURE_RESERVED_WORD) \
924 KEYWORD_GROUP('f') \ 924 KEYWORD_GROUP('f') \
925 KEYWORD("false", Token::FALSE_LITERAL) \ 925 KEYWORD("false", Token::FALSE_LITERAL) \
926 KEYWORD("finally", Token::FINALLY) \ 926 KEYWORD("finally", Token::FINALLY) \
927 KEYWORD("for", Token::FOR) \ 927 KEYWORD("for", Token::FOR) \
928 KEYWORD("function", Token::FUNCTION) \ 928 KEYWORD("function", Token::FUNCTION) \
929 KEYWORD_GROUP('i') \ 929 KEYWORD_GROUP('i') \
930 KEYWORD("if", Token::IF) \ 930 KEYWORD("if", Token::IF) \
931 KEYWORD("implements", Token::FUTURE_STRICT_RESERVED_WORD) \ 931 KEYWORD("implements", Token::FUTURE_STRICT_RESERVED_WORD) \
932 KEYWORD("import", harmony_modules \ 932 KEYWORD("import", \
933 ? Token::IMPORT : Token::FUTURE_RESERVED_WORD) \ 933 harmony_modules ? Token::IMPORT : Token::FUTURE_RESERVED_WORD) \
934 KEYWORD("in", Token::IN) \ 934 KEYWORD("in", Token::IN) \
935 KEYWORD("instanceof", Token::INSTANCEOF) \ 935 KEYWORD("instanceof", Token::INSTANCEOF) \
936 KEYWORD("interface", Token::FUTURE_STRICT_RESERVED_WORD) \ 936 KEYWORD("interface", Token::FUTURE_STRICT_RESERVED_WORD) \
937 KEYWORD_GROUP('l') \ 937 KEYWORD_GROUP('l') \
938 KEYWORD("let", harmony_scoping \ 938 KEYWORD("let", \
939 ? Token::LET : Token::FUTURE_STRICT_RESERVED_WORD) \ 939 harmony_scoping ? Token::LET : Token::FUTURE_STRICT_RESERVED_WORD) \
940 KEYWORD_GROUP('n') \ 940 KEYWORD_GROUP('n') \
941 KEYWORD("new", Token::NEW) \ 941 KEYWORD("new", Token::NEW) \
942 KEYWORD("null", Token::NULL_LITERAL) \ 942 KEYWORD("null", Token::NULL_LITERAL) \
943 KEYWORD_GROUP('p') \ 943 KEYWORD_GROUP('p') \
944 KEYWORD("package", Token::FUTURE_STRICT_RESERVED_WORD) \ 944 KEYWORD("package", Token::FUTURE_STRICT_RESERVED_WORD) \
945 KEYWORD("private", Token::FUTURE_STRICT_RESERVED_WORD) \ 945 KEYWORD("private", Token::FUTURE_STRICT_RESERVED_WORD) \
946 KEYWORD("protected", Token::FUTURE_STRICT_RESERVED_WORD) \ 946 KEYWORD("protected", Token::FUTURE_STRICT_RESERVED_WORD) \
947 KEYWORD("public", Token::FUTURE_STRICT_RESERVED_WORD) \ 947 KEYWORD("public", Token::FUTURE_STRICT_RESERVED_WORD) \
948 KEYWORD_GROUP('r') \ 948 KEYWORD_GROUP('r') \
949 KEYWORD("return", Token::RETURN) \ 949 KEYWORD("return", Token::RETURN) \
950 KEYWORD_GROUP('s') \ 950 KEYWORD_GROUP('s') \
951 KEYWORD("static", Token::FUTURE_STRICT_RESERVED_WORD) \ 951 KEYWORD("static", Token::FUTURE_STRICT_RESERVED_WORD) \
952 KEYWORD("super", Token::FUTURE_RESERVED_WORD) \ 952 KEYWORD("super", Token::SUPER) \
953 KEYWORD("switch", Token::SWITCH) \ 953 KEYWORD("switch", Token::SWITCH) \
954 KEYWORD_GROUP('t') \ 954 KEYWORD_GROUP('t') \
955 KEYWORD("this", Token::THIS) \ 955 KEYWORD("this", Token::THIS) \
956 KEYWORD("throw", Token::THROW) \ 956 KEYWORD("throw", Token::THROW) \
957 KEYWORD("true", Token::TRUE_LITERAL) \ 957 KEYWORD("true", Token::TRUE_LITERAL) \
958 KEYWORD("try", Token::TRY) \ 958 KEYWORD("try", Token::TRY) \
959 KEYWORD("typeof", Token::TYPEOF) \ 959 KEYWORD("typeof", Token::TYPEOF) \
960 KEYWORD_GROUP('v') \ 960 KEYWORD_GROUP('v') \
961 KEYWORD("var", Token::VAR) \ 961 KEYWORD("var", Token::VAR) \
962 KEYWORD("void", Token::VOID) \ 962 KEYWORD("void", Token::VOID) \
963 KEYWORD_GROUP('w') \ 963 KEYWORD_GROUP('w') \
964 KEYWORD("while", Token::WHILE) \ 964 KEYWORD("while", Token::WHILE) \
965 KEYWORD("with", Token::WITH) \ 965 KEYWORD("with", Token::WITH) \
966 KEYWORD_GROUP('y') \ 966 KEYWORD_GROUP('y') \
967 KEYWORD("yield", Token::YIELD) 967 KEYWORD("yield", Token::YIELD)
968 968
969 969
970 static Token::Value KeywordOrIdentifierToken(const uint8_t* input, 970 static Token::Value KeywordOrIdentifierToken(const uint8_t* input,
971 int input_length, 971 int input_length,
972 bool harmony_scoping, 972 bool harmony_scoping,
973 bool harmony_modules) { 973 bool harmony_modules) {
974 DCHECK(input_length >= 1); 974 DCHECK(input_length >= 1);
975 const int kMinLength = 2; 975 const int kMinLength = 2;
976 const int kMaxLength = 10; 976 const int kMaxLength = 10;
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1355 } 1355 }
1356 backing_store_.Add(static_cast<uint8_t>((one_byte_length >> 7) | 0x80u)); 1356 backing_store_.Add(static_cast<uint8_t>((one_byte_length >> 7) | 0x80u));
1357 } 1357 }
1358 backing_store_.Add(static_cast<uint8_t>(one_byte_length & 0x7f)); 1358 backing_store_.Add(static_cast<uint8_t>(one_byte_length & 0x7f));
1359 1359
1360 backing_store_.AddBlock(bytes); 1360 backing_store_.AddBlock(bytes);
1361 return backing_store_.EndSequence().start(); 1361 return backing_store_.EndSequence().start();
1362 } 1362 }
1363 1363
1364 } } // namespace v8::internal 1364 } } // namespace v8::internal
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