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, 2 insertions, 1 deletions

diff --git a/vm.h b/vm.h
index 30844f7..c0d81d9 100644
--- a/vm.h
+++ b/vm.h
@@ -87,7 +87,8 @@ __insn(CALL) \
 __insn(MCALL) \
 __insn(PRINT) \
 __insn(NEXTK) \
-__insn(NEXTKV)
+__insn(NEXTKV) \
+__insn(DELETE)
 
 
 #undef __insn