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Issue 7278039: Revert preparser duplicate detection. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 9 years, 5 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
11 // with the distribution. 11 // with the distribution.
12 // * Neither the name of Google Inc. nor the names of its 12 // * Neither the name of Google Inc. nor the names of its
13 // contributors may be used to endorse or promote products derived 13 // contributors may be used to endorse or promote products derived
14 // from this software without specific prior written permission. 14 // from this software without specific prior written permission.
15 // 15 //
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 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. 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 27
28 #include <stdarg.h> 28 #include <stdarg.h>
29 #include <math.h>
30 #include <limits.h> 29 #include <limits.h>
31 30
32 #include "conversions-inl.h" 31 #include "conversions-inl.h"
33 #include "dtoa.h" 32 #include "dtoa.h"
34 #include "scanner-base.h" 33 #include "scanner-base.h"
35 #include "strtod.h" 34 #include "strtod.h"
36 #include "utils.h" 35 #include "utils.h"
37 36
38 namespace v8 { 37 namespace v8 {
39 namespace internal { 38 namespace internal {
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384 383
385 // Get the integer part and the decimal part. 384 // Get the integer part and the decimal part.
386 double integer_part = floor(value); 385 double integer_part = floor(value);
387 double decimal_part = value - integer_part; 386 double decimal_part = value - integer_part;
388 387
389 // Convert the integer part starting from the back. Always generate 388 // Convert the integer part starting from the back. Always generate
390 // at least one digit. 389 // at least one digit.
391 int integer_pos = kBufferSize - 2; 390 int integer_pos = kBufferSize - 2;
392 do { 391 do {
393 integer_buffer[integer_pos--] = 392 integer_buffer[integer_pos--] =
394 chars[static_cast<int>(fmod(integer_part, radix))]; 393 chars[static_cast<int>(modulo(integer_part, radix))];
395 integer_part /= radix; 394 integer_part /= radix;
396 } while (integer_part >= 1.0); 395 } while (integer_part >= 1.0);
397 // Sanity check. 396 // Sanity check.
398 ASSERT(integer_pos > 0); 397 ASSERT(integer_pos > 0);
399 // Add sign if needed. 398 // Add sign if needed.
400 if (is_negative) integer_buffer[integer_pos--] = '-'; 399 if (is_negative) integer_buffer[integer_pos--] = '-';
401 400
402 // Convert the decimal part. Repeatedly multiply by the radix to 401 // Convert the decimal part. Repeatedly multiply by the radix to
403 // generate the next char. Never generate more than kBufferSize - 1 402 // generate the next char. Never generate more than kBufferSize - 1
404 // chars. 403 // chars.
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424 // If the number has a decimal part, leave room for the period. 423 // If the number has a decimal part, leave room for the period.
425 if (decimal_pos > 0) result_size++; 424 if (decimal_pos > 0) result_size++;
426 // Allocate result and fill in the parts. 425 // Allocate result and fill in the parts.
427 SimpleStringBuilder builder(result_size + 1); 426 SimpleStringBuilder builder(result_size + 1);
428 builder.AddSubstring(integer_buffer + integer_pos + 1, integer_part_size); 427 builder.AddSubstring(integer_buffer + integer_pos + 1, integer_part_size);
429 if (decimal_pos > 0) builder.AddCharacter('.'); 428 if (decimal_pos > 0) builder.AddCharacter('.');
430 builder.AddSubstring(decimal_buffer, decimal_pos); 429 builder.AddSubstring(decimal_buffer, decimal_pos);
431 return builder.Finalize(); 430 return builder.Finalize();
432 } 431 }
433 432
433
434 static Mutex* dtoa_lock_one = OS::CreateMutex();
435 static Mutex* dtoa_lock_zero = OS::CreateMutex();
436
437
434 } } // namespace v8::internal 438 } } // namespace v8::internal
439
440
441 extern "C" {
442 void ACQUIRE_DTOA_LOCK(int n) {
443 ASSERT(n == 0 || n == 1);
444 (n == 0 ? v8::internal::dtoa_lock_zero : v8::internal::dtoa_lock_one)->Lock();
445 }
446
447
448 void FREE_DTOA_LOCK(int n) {
449 ASSERT(n == 0 || n == 1);
450 (n == 0 ? v8::internal::dtoa_lock_zero : v8::internal::dtoa_lock_one)->
451 Unlock();
452 }
453 }
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