syntax: implement `delete` as proper operator

Turn `delete` into a proper operator mimicking ECMAScript semantics.

Also ensure to transparently turn deprecated `delete(obj, propname)`
function calls into `delete obj.propname` expressions during compilation.

When strict mode is active, legacy delete() calls throw a syntax error
instead.

Finally drop the `delete()` function from the stdlib as it is shadowed
by the delete operator syntax now.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>

1 files changed, 1 insertions, 0 deletions

diff --git a/lexer.h b/lexer.h
index 60f6ce0..e31f78a 100644
--- a/lexer.h
+++ b/lexer.h
@@ -103,6 +103,7 @@ typedef enum {
 	TK_REGEXP,
 	TK_NULL,
 	TK_THIS,
+	TK_DELETE,
 
 	TK_EOF,
 	TK_ERROR