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Issue #2142 - Reduce calls to FindReservedWord when checking for forbidden identifiers during parsing

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Based-on: m-c 1351913/{1,2}
This commit is contained in:
Martok 2023-04-26 18:22:30 +02:00 • committed by roytam1
commit 6abb54ff11
4 changed files with 116 additions and 96 deletions
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40
js/src/frontend/TokenStream.cpp
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@ -194,41 +194,29 @@ frontend::IsKeyword(JSLinearString* str)
return false;
}
bool
frontend::IsFutureReservedWord(JSLinearString* str)
TokenKind
frontend::ReservedWordTokenKind(PropertyName* str)
{
if (const ReservedWordInfo* rw = FindReservedWord(str))
return TokenKindIsFutureReservedWord(rw->tokentype);
return rw->tokentype;
return false;
}
bool
frontend::IsStrictReservedWord(JSLinearString* str)
{
if (const ReservedWordInfo* rw = FindReservedWord(str))
return TokenKindIsStrictReservedWord(rw->tokentype);
return false;
}
bool
frontend::IsReservedWordLiteral(JSLinearString* str)
{
if (const ReservedWordInfo* rw = FindReservedWord(str))
return TokenKindIsReservedWordLiteral(rw->tokentype);
return false;
return TOK_NAME;
}
const char*
frontend::ReservedWordToCharZ(PropertyName* str)
{
const ReservedWordInfo* rw = FindReservedWord(str);
if (rw == nullptr)
return nullptr;
if (const ReservedWordInfo* rw = FindReservedWord(str))
return ReservedWordToCharZ(rw->tokentype);
switch (rw->tokentype) {
return nullptr;
}
const char*
frontend::ReservedWordToCharZ(TokenKind tt)
{
MOZ_ASSERT(tt != TOK_NAME);
switch (tt) {
#define EMIT_CASE(word, name, type) case type: return js_##word##_str;
FOR_EACH_JAVASCRIPT_RESERVED_WORD(EMIT_CASE)
#undef EMIT_CASE