diff options
Diffstat (limited to 'js/src/frontend/ParseNode.h')
| -rw-r--r-- | js/src/frontend/ParseNode.h | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/js/src/frontend/ParseNode.h b/js/src/frontend/ParseNode.h index c3523afe4..c0669d85e 100644 --- a/js/src/frontend/ParseNode.h +++ b/js/src/frontend/ParseNode.h @@ -54,6 +54,7 @@ class ObjectBox; F(TRUE) \ F(FALSE) \ F(NULL) \ + F(RAW_UNDEFINED) \ F(THIS) \ F(FUNCTION) \ F(MODULE) \ @@ -406,7 +407,8 @@ IsTypeofKind(ParseNodeKind kind) * PNK_NUMBER dval pn_dval: double value of numeric literal * PNK_TRUE, nullary pn_op: JSOp bytecode * PNK_FALSE, - * PNK_NULL + * PNK_NULL, + * PNK_RAW_UNDEFINED * * PNK_THIS, unary pn_kid: '.this' Name if function `this`, else nullptr * PNK_SUPERBASE unary pn_kid: '.this' Name @@ -686,7 +688,8 @@ class ParseNode isKind(PNK_STRING) || isKind(PNK_TRUE) || isKind(PNK_FALSE) || - isKind(PNK_NULL); + isKind(PNK_NULL) || + isKind(PNK_RAW_UNDEFINED); } /* Return true if this node appears in a Directive Prologue. */ @@ -1141,6 +1144,16 @@ class NullLiteral : public ParseNode explicit NullLiteral(const TokenPos& pos) : ParseNode(PNK_NULL, JSOP_NULL, PN_NULLARY, pos) { } }; +// This is only used internally, currently just for tagged templates. +// It represents the value 'undefined' (aka `void 0`), like NullLiteral +// represents the value 'null'. +class RawUndefinedLiteral : public ParseNode +{ + public: + explicit RawUndefinedLiteral(const TokenPos& pos) + : ParseNode(PNK_RAW_UNDEFINED, JSOP_UNDEFINED, PN_NULLARY, pos) { } +}; + class BooleanLiteral : public ParseNode { public: @@ -1361,6 +1374,7 @@ ParseNode::isConstant() case PNK_STRING: case PNK_TEMPLATE_STRING: case PNK_NULL: + case PNK_RAW_UNDEFINED: case PNK_FALSE: case PNK_TRUE: return true; |