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Unified Diff: src/preparser.cc

Issue 27182002: Introduce ParserBase for common code between parser and pre-parser. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 7 years, 2 months ago
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Index: src/preparser.cc
diff --git a/src/preparser.cc b/src/preparser.cc
index 4b65b46496bb83c73167e28bab349f427601d668..2d670ac623d631ace4d62ce7cc5233e9ded90cc5 100644
--- a/src/preparser.cc
+++ b/src/preparser.cc
@@ -63,17 +63,17 @@ PreParser::PreParseResult PreParser::PreParseLazyFunction(
set_language_mode(mode);
Scope function_scope(&scope_, kFunctionScope);
function_scope.set_is_generator(is_generator);
- ASSERT_EQ(i::Token::LBRACE, scanner_->current_token());
+ ASSERT_EQ(i::Token::LBRACE, scanner()->current_token());
bool ok = true;
- int start_position = scanner_->peek_location().beg_pos;
+ int start_position = scanner()->peek_location().beg_pos;
ParseLazyFunctionLiteralBody(&ok);
- if (stack_overflow_) return kPreParseStackOverflow;
+ if (stack_overflow()) return kPreParseStackOverflow;
if (!ok) {
- ReportUnexpectedToken(scanner_->current_token());
+ ReportUnexpectedToken(scanner()->current_token());
} else {
- ASSERT_EQ(i::Token::RBRACE, scanner_->peek());
+ ASSERT_EQ(i::Token::RBRACE, scanner()->peek());
if (!is_classic_mode()) {
- int end_pos = scanner_->location().end_pos;
+ int end_pos = scanner()->location().end_pos;
CheckOctalLiteral(start_position, end_pos, &ok);
if (ok) {
CheckDelayedStrictModeViolation(start_position, end_pos, &ok);
@@ -101,10 +101,10 @@ void PreParser::ReportUnexpectedToken(i::Token::Value token) {
// We don't report stack overflows here, to avoid increasing the
// stack depth even further. Instead we report it after parsing is
// over, in ParseProgram.
- if (token == i::Token::ILLEGAL && stack_overflow_) {
+ if (token == i::Token::ILLEGAL && stack_overflow()) {
return;
}
- i::Scanner::Location source_location = scanner_->location();
+ i::Scanner::Location source_location = scanner()->location();
// Four of the tokens are treated specially
switch (token) {
@@ -132,10 +132,10 @@ void PreParser::ReportUnexpectedToken(i::Token::Value token) {
// Checks whether octal literal last seen is between beg_pos and end_pos.
// If so, reports an error.
void PreParser::CheckOctalLiteral(int beg_pos, int end_pos, bool* ok) {
- i::Scanner::Location octal = scanner_->octal_position();
+ i::Scanner::Location octal = scanner()->octal_position();
if (beg_pos <= octal.beg_pos && octal.end_pos <= end_pos) {
ReportMessageAt(octal, "strict_octal_literal", NULL);
- scanner_->clear_octal_position();
+ scanner()->clear_octal_position();
*ok = false;
}
}
@@ -274,9 +274,9 @@ PreParser::Statement PreParser::ParseStatement(bool* ok) {
return ParseTryStatement(ok);
case i::Token::FUNCTION: {
- i::Scanner::Location start_location = scanner_->peek_location();
+ i::Scanner::Location start_location = scanner()->peek_location();
Statement statement = ParseFunctionDeclaration(CHECK_OK);
- i::Scanner::Location end_location = scanner_->location();
+ i::Scanner::Location end_location = scanner()->location();
if (!is_classic_mode()) {
ReportMessageAt(start_location.beg_pos, end_location.end_pos,
"strict_function", NULL);
@@ -304,9 +304,9 @@ PreParser::Statement PreParser::ParseFunctionDeclaration(bool* ok) {
// '{' FunctionBody '}'
Expect(i::Token::FUNCTION, CHECK_OK);
- bool is_generator = allow_generators_ && Check(i::Token::MUL);
+ bool is_generator = allow_generators() && Check(i::Token::MUL);
Identifier identifier = ParseIdentifier(CHECK_OK);
- i::Scanner::Location location = scanner_->location();
+ i::Scanner::Location location = scanner()->location();
Expression function_value = ParseFunctionLiteral(is_generator, CHECK_OK);
@@ -402,7 +402,7 @@ PreParser::Statement PreParser::ParseVariableDeclarations(
case i::CLASSIC_MODE:
break;
case i::STRICT_MODE: {
- i::Scanner::Location location = scanner_->peek_location();
+ i::Scanner::Location location = scanner()->peek_location();
ReportMessageAt(location, "strict_const", NULL);
*ok = false;
return Statement::Default();
@@ -410,7 +410,7 @@ PreParser::Statement PreParser::ParseVariableDeclarations(
case i::EXTENDED_MODE:
if (var_context != kSourceElement &&
var_context != kForStatement) {
- i::Scanner::Location location = scanner_->peek_location();
+ i::Scanner::Location location = scanner()->peek_location();
ReportMessageAt(location.beg_pos, location.end_pos,
"unprotected_const", NULL);
*ok = false;
@@ -427,7 +427,7 @@ PreParser::Statement PreParser::ParseVariableDeclarations(
// * It is a Syntax Error if the code that matches this production is not
// contained in extended code.
if (!is_extended_mode()) {
- i::Scanner::Location location = scanner_->peek_location();
+ i::Scanner::Location location = scanner()->peek_location();
ReportMessageAt(location.beg_pos, location.end_pos,
"illegal_let", NULL);
*ok = false;
@@ -436,7 +436,7 @@ PreParser::Statement PreParser::ParseVariableDeclarations(
Consume(i::Token::LET);
if (var_context != kSourceElement &&
var_context != kForStatement) {
- i::Scanner::Location location = scanner_->peek_location();
+ i::Scanner::Location location = scanner()->peek_location();
ReportMessageAt(location.beg_pos, location.end_pos,
"unprotected_let", NULL);
*ok = false;
@@ -457,7 +457,7 @@ PreParser::Statement PreParser::ParseVariableDeclarations(
if (nvars > 0) Consume(i::Token::COMMA);
Identifier identifier = ParseIdentifier(CHECK_OK);
if (!is_classic_mode() && !identifier.IsValidStrictVariable()) {
- StrictModeIdentifierViolation(scanner_->location(),
+ StrictModeIdentifierViolation(scanner()->location(),
"strict_var_name",
identifier,
ok);
@@ -524,7 +524,7 @@ PreParser::Statement PreParser::ParseContinueStatement(bool* ok) {
Expect(i::Token::CONTINUE, CHECK_OK);
i::Token::Value tok = peek();
- if (!scanner_->HasAnyLineTerminatorBeforeNext() &&
+ if (!scanner()->HasAnyLineTerminatorBeforeNext() &&
tok != i::Token::SEMICOLON &&
tok != i::Token::RBRACE &&
tok != i::Token::EOS) {
@@ -541,7 +541,7 @@ PreParser::Statement PreParser::ParseBreakStatement(bool* ok) {
Expect(i::Token::BREAK, CHECK_OK);
i::Token::Value tok = peek();
- if (!scanner_->HasAnyLineTerminatorBeforeNext() &&
+ if (!scanner()->HasAnyLineTerminatorBeforeNext() &&
tok != i::Token::SEMICOLON &&
tok != i::Token::RBRACE &&
tok != i::Token::EOS) {
@@ -567,7 +567,7 @@ PreParser::Statement PreParser::ParseReturnStatement(bool* ok) {
// This is not handled during preparsing.
i::Token::Value tok = peek();
- if (!scanner_->HasAnyLineTerminatorBeforeNext() &&
+ if (!scanner()->HasAnyLineTerminatorBeforeNext() &&
tok != i::Token::SEMICOLON &&
tok != i::Token::RBRACE &&
tok != i::Token::EOS) {
@@ -583,7 +583,7 @@ PreParser::Statement PreParser::ParseWithStatement(bool* ok) {
// 'with' '(' Expression ')' Statement
Expect(i::Token::WITH, CHECK_OK);
if (!is_classic_mode()) {
- i::Scanner::Location location = scanner_->location();
+ i::Scanner::Location location = scanner()->location();
ReportMessageAt(location, "strict_mode_with", NULL);
*ok = false;
return Statement::Default();
@@ -661,7 +661,7 @@ PreParser::Statement PreParser::ParseWhileStatement(bool* ok) {
bool PreParser::CheckInOrOf(bool accept_OF) {
if (peek() == i::Token::IN ||
(allow_for_of() && accept_OF && peek() == i::Token::IDENTIFIER &&
- scanner_->is_next_contextual_keyword(v8::internal::CStrVector("of")))) {
+ scanner()->is_next_contextual_keyword(v8::internal::CStrVector("of")))) {
Next();
return true;
}
@@ -728,8 +728,8 @@ PreParser::Statement PreParser::ParseThrowStatement(bool* ok) {
// 'throw' [no line terminator] Expression ';'
Expect(i::Token::THROW, CHECK_OK);
- if (scanner_->HasAnyLineTerminatorBeforeNext()) {
- i::Scanner::Location pos = scanner_->location();
+ if (scanner()->HasAnyLineTerminatorBeforeNext()) {
+ i::Scanner::Location pos = scanner()->location();
ReportMessageAt(pos, "newline_after_throw", NULL);
*ok = false;
return Statement::Default();
@@ -765,7 +765,7 @@ PreParser::Statement PreParser::ParseTryStatement(bool* ok) {
Expect(i::Token::LPAREN, CHECK_OK);
Identifier id = ParseIdentifier(CHECK_OK);
if (!is_classic_mode() && !id.IsValidStrictVariable()) {
- StrictModeIdentifierViolation(scanner_->location(),
+ StrictModeIdentifierViolation(scanner()->location(),
"strict_catch_variable",
id,
ok);
@@ -838,7 +838,7 @@ PreParser::Expression PreParser::ParseAssignmentExpression(bool accept_IN,
return ParseYieldExpression(ok);
}
- i::Scanner::Location before = scanner_->peek_location();
+ i::Scanner::Location before = scanner()->peek_location();
Expression expression = ParseConditionalExpression(accept_IN, CHECK_OK);
if (!i::Token::IsAssignmentOp(peek())) {
@@ -849,7 +849,7 @@ PreParser::Expression PreParser::ParseAssignmentExpression(bool accept_IN,
if (!is_classic_mode() &&
expression.IsIdentifier() &&
expression.AsIdentifier().IsEvalOrArguments()) {
- i::Scanner::Location after = scanner_->location();
+ i::Scanner::Location after = scanner()->location();
ReportMessageAt(before.beg_pos, after.end_pos,
"strict_lhs_assignment", NULL);
*ok = false;
@@ -946,12 +946,12 @@ PreParser::Expression PreParser::ParseUnaryExpression(bool* ok) {
return Expression::Default();
} else if (i::Token::IsCountOp(op)) {
op = Next();
- i::Scanner::Location before = scanner_->peek_location();
+ i::Scanner::Location before = scanner()->peek_location();
Expression expression = ParseUnaryExpression(CHECK_OK);
if (!is_classic_mode() &&
expression.IsIdentifier() &&
expression.AsIdentifier().IsEvalOrArguments()) {
- i::Scanner::Location after = scanner_->location();
+ i::Scanner::Location after = scanner()->location();
ReportMessageAt(before.beg_pos, after.end_pos,
"strict_lhs_prefix", NULL);
*ok = false;
@@ -967,14 +967,14 @@ PreParser::Expression PreParser::ParsePostfixExpression(bool* ok) {
// PostfixExpression ::
// LeftHandSideExpression ('++' | '--')?
- i::Scanner::Location before = scanner_->peek_location();
+ i::Scanner::Location before = scanner()->peek_location();
Expression expression = ParseLeftHandSideExpression(CHECK_OK);
- if (!scanner_->HasAnyLineTerminatorBeforeNext() &&
+ if (!scanner()->HasAnyLineTerminatorBeforeNext() &&
i::Token::IsCountOp(peek())) {
if (!is_classic_mode() &&
expression.IsIdentifier() &&
expression.AsIdentifier().IsEvalOrArguments()) {
- i::Scanner::Location after = scanner_->location();
+ i::Scanner::Location after = scanner()->location();
ReportMessageAt(before.beg_pos, after.end_pos,
"strict_lhs_postfix", NULL);
*ok = false;
@@ -1074,14 +1074,14 @@ PreParser::Expression PreParser::ParseMemberWithNewPrefixesExpression(
if (peek() == i::Token::FUNCTION) {
Consume(i::Token::FUNCTION);
- bool is_generator = allow_generators_ && Check(i::Token::MUL);
+ bool is_generator = allow_generators() && Check(i::Token::MUL);
Identifier identifier = Identifier::Default();
if (peek_any_identifier()) {
identifier = ParseIdentifier(CHECK_OK);
}
result = ParseFunctionLiteral(is_generator, CHECK_OK);
if (result.IsStrictFunction() && !identifier.IsValidStrictVariable()) {
- StrictModeIdentifierViolation(scanner_->location(),
+ StrictModeIdentifierViolation(scanner()->location(),
"strict_function_name",
identifier,
ok);
@@ -1238,7 +1238,7 @@ PreParser::Expression PreParser::ParseObjectLiteral(bool* ok) {
// | (('get' | 'set') (IdentifierName | String | Number) FunctionLiteral)
// )*[','] '}'
- i::ObjectLiteralChecker<PreParser> checker(this, scanner_, language_mode());
+ i::ObjectLiteralChecker<PreParser> checker(this, scanner(), language_mode());
Expect(i::Token::LBRACE, CHECK_OK);
while (peek() != i::Token::RBRACE) {
@@ -1312,18 +1312,18 @@ PreParser::Expression PreParser::ParseObjectLiteral(bool* ok) {
PreParser::Expression PreParser::ParseRegExpLiteral(bool seen_equal,
bool* ok) {
- if (!scanner_->ScanRegExpPattern(seen_equal)) {
+ if (!scanner()->ScanRegExpPattern(seen_equal)) {
Next();
- ReportMessageAt(scanner_->location(), "unterminated_regexp", NULL);
+ ReportMessageAt(scanner()->location(), "unterminated_regexp", NULL);
*ok = false;
return Expression::Default();
}
scope_->NextMaterializedLiteralIndex();
- if (!scanner_->ScanRegExpFlags()) {
+ if (!scanner()->ScanRegExpFlags()) {
Next();
- ReportMessageAt(scanner_->location(), "invalid_regexp_flags", NULL);
+ ReportMessageAt(scanner()->location(), "invalid_regexp_flags", NULL);
*ok = false;
return Expression::Default();
}
@@ -1368,28 +1368,28 @@ PreParser::Expression PreParser::ParseFunctionLiteral(bool is_generator,
// FormalParameterList ::
// '(' (Identifier)*[','] ')'
Expect(i::Token::LPAREN, CHECK_OK);
- int start_position = scanner_->location().beg_pos;
+ int start_position = scanner()->location().beg_pos;
bool done = (peek() == i::Token::RPAREN);
- i::DuplicateFinder duplicate_finder(scanner_->unicode_cache());
+ i::DuplicateFinder duplicate_finder(scanner()->unicode_cache());
while (!done) {
Identifier id = ParseIdentifier(CHECK_OK);
if (!id.IsValidStrictVariable()) {
- StrictModeIdentifierViolation(scanner_->location(),
+ StrictModeIdentifierViolation(scanner()->location(),
"strict_param_name",
id,
CHECK_OK);
}
int prev_value;
- if (scanner_->is_literal_ascii()) {
+ if (scanner()->is_literal_ascii()) {
prev_value =
- duplicate_finder.AddAsciiSymbol(scanner_->literal_ascii_string(), 1);
+ duplicate_finder.AddAsciiSymbol(scanner()->literal_ascii_string(), 1);
} else {
prev_value =
- duplicate_finder.AddUtf16Symbol(scanner_->literal_utf16_string(), 1);
+ duplicate_finder.AddUtf16Symbol(scanner()->literal_utf16_string(), 1);
}
if (prev_value != 0) {
- SetStrictModeViolation(scanner_->location(),
+ SetStrictModeViolation(scanner()->location(),
"strict_param_dupe",
CHECK_OK);
}
@@ -1404,7 +1404,7 @@ PreParser::Expression PreParser::ParseFunctionLiteral(bool is_generator,
// Currently only happens to top-level functions.
// Optimistically assume that all top-level functions are lazily compiled.
bool is_lazily_compiled = (outer_scope_type == kTopLevelScope &&
- !inside_with && allow_lazy_ &&
+ !inside_with && allow_lazy() &&
!parenthesized_function_);
parenthesized_function_ = false;
@@ -1417,7 +1417,7 @@ PreParser::Expression PreParser::ParseFunctionLiteral(bool is_generator,
Expect(i::Token::RBRACE, CHECK_OK);
if (!is_classic_mode()) {
- int end_position = scanner_->location().end_pos;
+ int end_position = scanner()->location().end_pos;
CheckOctalLiteral(start_position, end_position, CHECK_OK);
CheckDelayedStrictModeViolation(start_position, end_position, CHECK_OK);
return Expression::StrictFunction();
@@ -1428,15 +1428,15 @@ PreParser::Expression PreParser::ParseFunctionLiteral(bool is_generator,
void PreParser::ParseLazyFunctionLiteralBody(bool* ok) {
- int body_start = scanner_->location().beg_pos;
+ int body_start = scanner()->location().beg_pos;
log_->PauseRecording();
ParseSourceElements(i::Token::RBRACE, ok);
log_->ResumeRecording();
if (!*ok) return;
// Position right after terminal '}'.
- ASSERT_EQ(i::Token::RBRACE, scanner_->peek());
- int body_end = scanner_->peek_location().end_pos;
+ ASSERT_EQ(i::Token::RBRACE, scanner()->peek());
+ int body_end = scanner()->peek_location().end_pos;
log_->LogFunction(body_start, body_end,
scope_->materialized_literal_count(),
scope_->expected_properties(),
@@ -1448,7 +1448,7 @@ PreParser::Expression PreParser::ParseV8Intrinsic(bool* ok) {
// CallRuntime ::
// '%' Identifier Arguments
Expect(i::Token::MOD, CHECK_OK);
- if (!allow_natives_syntax_) {
+ if (!allow_natives_syntax()) {
*ok = false;
return Expression::Default();
}
@@ -1461,29 +1461,12 @@ PreParser::Expression PreParser::ParseV8Intrinsic(bool* ok) {
#undef CHECK_OK
-void PreParser::ExpectSemicolon(bool* ok) {
- // Check for automatic semicolon insertion according to
- // the rules given in ECMA-262, section 7.9, page 21.
- i::Token::Value tok = peek();
- if (tok == i::Token::SEMICOLON) {
- Next();
- return;
- }
- if (scanner_->HasAnyLineTerminatorBeforeNext() ||
- tok == i::Token::RBRACE ||
- tok == i::Token::EOS) {
- return;
- }
- Expect(i::Token::SEMICOLON, ok);
-}
-
-
void PreParser::LogSymbol() {
- int identifier_pos = scanner_->location().beg_pos;
- if (scanner_->is_literal_ascii()) {
- log_->LogAsciiSymbol(identifier_pos, scanner_->literal_ascii_string());
+ int identifier_pos = scanner()->location().beg_pos;
+ if (scanner()->is_literal_ascii()) {
+ log_->LogAsciiSymbol(identifier_pos, scanner()->literal_ascii_string());
} else {
- log_->LogUtf16Symbol(identifier_pos, scanner_->literal_utf16_string());
+ log_->LogUtf16Symbol(identifier_pos, scanner()->literal_utf16_string());
}
}
@@ -1492,10 +1475,10 @@ PreParser::Expression PreParser::GetStringSymbol() {
const int kUseStrictLength = 10;
const char* kUseStrictChars = "use strict";
LogSymbol();
- if (scanner_->is_literal_ascii() &&
- scanner_->literal_length() == kUseStrictLength &&
- !scanner_->literal_contains_escapes() &&
- !strncmp(scanner_->literal_ascii_string().start(), kUseStrictChars,
+ if (scanner()->is_literal_ascii() &&
+ scanner()->literal_length() == kUseStrictLength &&
+ !scanner()->literal_contains_escapes() &&
+ !strncmp(scanner()->literal_ascii_string().start(), kUseStrictChars,
kUseStrictLength)) {
return Expression::UseStrictStringLiteral();
}
@@ -1505,22 +1488,22 @@ PreParser::Expression PreParser::GetStringSymbol() {
PreParser::Identifier PreParser::GetIdentifierSymbol() {
LogSymbol();
- if (scanner_->current_token() == i::Token::FUTURE_RESERVED_WORD) {
+ if (scanner()->current_token() == i::Token::FUTURE_RESERVED_WORD) {
return Identifier::FutureReserved();
- } else if (scanner_->current_token() ==
+ } else if (scanner()->current_token() ==
i::Token::FUTURE_STRICT_RESERVED_WORD) {
return Identifier::FutureStrictReserved();
- } else if (scanner_->current_token() == i::Token::YIELD) {
+ } else if (scanner()->current_token() == i::Token::YIELD) {
return Identifier::Yield();
}
- if (scanner_->is_literal_ascii()) {
+ if (scanner()->is_literal_ascii()) {
// Detect strict-mode poison words.
- if (scanner_->literal_length() == 4 &&
- !strncmp(scanner_->literal_ascii_string().start(), "eval", 4)) {
+ if (scanner()->literal_length() == 4 &&
+ !strncmp(scanner()->literal_ascii_string().start(), "eval", 4)) {
return Identifier::Eval();
}
- if (scanner_->literal_length() == 9 &&
- !strncmp(scanner_->literal_ascii_string().start(), "arguments", 9)) {
+ if (scanner()->literal_length() == 9 &&
+ !strncmp(scanner()->literal_ascii_string().start(), "arguments", 9)) {
return Identifier::Arguments();
}
}
@@ -1532,7 +1515,7 @@ PreParser::Identifier PreParser::ParseIdentifier(bool* ok) {
i::Token::Value next = Next();
switch (next) {
case i::Token::FUTURE_RESERVED_WORD: {
- i::Scanner::Location location = scanner_->location();
+ i::Scanner::Location location = scanner()->location();
ReportMessageAt(location.beg_pos, location.end_pos,
"reserved_word", NULL);
*ok = false;
@@ -1541,14 +1524,14 @@ PreParser::Identifier PreParser::ParseIdentifier(bool* ok) {
case i::Token::YIELD:
if (scope_->is_generator()) {
// 'yield' in a generator is only valid as part of a YieldExpression.
- ReportMessageAt(scanner_->location(), "unexpected_token", "yield");
+ ReportMessageAt(scanner()->location(), "unexpected_token", "yield");
*ok = false;
return Identifier::Yield();
}
// FALLTHROUGH
case i::Token::FUTURE_STRICT_RESERVED_WORD:
if (!is_classic_mode()) {
- i::Scanner::Location location = scanner_->location();
+ i::Scanner::Location location = scanner()->location();
ReportMessageAt(location.beg_pos, location.end_pos,
"strict_reserved_word", NULL);
*ok = false;
@@ -1619,7 +1602,7 @@ void PreParser::StrictModeIdentifierViolation(i::Scanner::Location location,
PreParser::Identifier PreParser::ParseIdentifierName(bool* ok) {
i::Token::Value next = Next();
if (i::Token::IsKeyword(next)) {
- int pos = scanner_->location().beg_pos;
+ int pos = scanner()->location().beg_pos;
const char* keyword = i::Token::String(next);
log_->LogAsciiSymbol(pos, i::Vector<const char>(keyword,
i::StrLength(keyword)));
@@ -1644,9 +1627,9 @@ PreParser::Identifier PreParser::ParseIdentifierNameOrGetOrSet(bool* is_get,
bool* ok) {
Identifier result = ParseIdentifierName(ok);
if (!*ok) return Identifier::Default();
- if (scanner_->is_literal_ascii() &&
- scanner_->literal_length() == 3) {
- const char* token = scanner_->literal_ascii_string().start();
+ if (scanner()->is_literal_ascii() &&
+ scanner()->literal_length() == 3) {
+ const char* token = scanner()->literal_ascii_string().start();
*is_get = strncmp(token, "get", 3) == 0;
*is_set = !*is_get && strncmp(token, "set", 3) == 0;
}
@@ -1654,12 +1637,4 @@ PreParser::Identifier PreParser::ParseIdentifierNameOrGetOrSet(bool* is_get,
}
-bool PreParser::peek_any_identifier() {
- i::Token::Value next = peek();
- return next == i::Token::IDENTIFIER ||
- next == i::Token::FUTURE_RESERVED_WORD ||
- next == i::Token::FUTURE_STRICT_RESERVED_WORD ||
- next == i::Token::YIELD;
-}
-
} } // v8::internal
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