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[scanner] Extend fast-smi parsing to the entire range minus Smi::kMinValue

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BUG=

Review URL: https://codereview.chromium.org/998893002

Cr-Commit-Position: refs/heads/master@{#27129}
This commit is contained in:
verwaest 2015-03-11 04:33:18 -07:00 committed by Commit bot
parent aab76eff43
commit e77d0abd4a
2 changed files with 4 additions and 10 deletions
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13
src/scanner.cc
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@ -1000,7 +1000,7 @@ Token::Value Scanner::ScanNumber(bool seen_period) {
// Parse decimal digits and allow trailing fractional part.
if (kind == DECIMAL) {
if (at_start) {
int value = 0;
uint64_t value = 0;
while (IsDecimalDigit(c0_)) {
value = 10 * value + (c0_ - '0');
@ -1009,9 +1009,9 @@ Token::Value Scanner::ScanNumber(bool seen_period) {
AddLiteralChar(first_char);
}
if (next_.literal_chars->one_byte_literal().length() < 10 &&
c0_ != '.' && c0_ != 'e' && c0_ != 'E') {
smi_value_ = value;
if (next_.literal_chars->one_byte_literal().length() <= 10 &&
value <= Smi::kMaxValue && c0_ != '.' && c0_ != 'e' && c0_ != 'E') {
smi_value_ = static_cast<int>(value);
literal.Complete();
HandleLeadSurrogate();
@ -1428,11 +1428,6 @@ double Scanner::DoubleValue() {
}
int Scanner::FindNumber(DuplicateFinder* finder, int value) {
return finder->AddNumber(literal_one_byte_string(), value);
}
int Scanner::FindSymbol(DuplicateFinder* finder, int value) {
if (is_literal_one_byte()) {
return finder->AddOneByteSymbol(literal_one_byte_string(), value);

1
src/scanner.h
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@ -427,7 +427,6 @@ class Scanner {
}
}
int FindNumber(DuplicateFinder* finder, int value);
int FindSymbol(DuplicateFinder* finder, int value);
UnicodeCache* unicode_cache() { return unicode_cache_; }