Closes#983.
* origin/topic/jsiwek/983:
Add named constructor examples to docs.
Allow named vector constructors. Addresses #983.
Allow named table constructors. Addresses #983.
Improve set constructor argument coercion.
Allow named set constructors. Addresses #983.
Allow named record constructors. Addresses #983.
And changed the endianness parameter of bytestring_to_count() BIF to
default to false (big endian), mostly just to prove that the BIF parser
doesn't choke on default parameters.
* origin/topic/jsiwek/string-indexing:
Change substring index notation to use a colon (addresses #422).
Tweaked slightly to make it more generic, we may index other types
with slices eventually too.
Closes#422.
Both local and global variables declared with "const" could be modified,
but now expressions that would modify them should generate an error
message at parse-time.
- Identifiers that are initialized with set()/table() constructor
expressions now inherit attributes from the expression. Before,
statements like
const i: set[string] = set() &redef;
associated the attribute with the set() constructor, but not the
"i" identifier, preventing redefinition. Addresses #866.
- Allow &default attribute to apply to tables initialized as empty
(via either "{ }" or "table()") or if the expression supplied to it
can evaluate to a type that's promotable to the same yield type as
the table.
Also removed RefExpr::Eval(Val*) method since it was never called
(Clang emitted warning about this hiding overloaded virtual function
UnaryExpr::Eval(Frame*)) and doesn't appear to be necessary even if it
was called to avoid the default vector handling of UnaryExpr::Eval
(as the comment suggests as the intention).
The communication subsystem is now disabled until a new BiF,
enable_communication(), is called. The base scripts do this
automatically when either a Communication::Node is defined, or Bro is
asked to listen for incoming connections.
"delete x$y" now resets record field "x" back to its original state if
it is either &optional or has a &default. "delete" may not be used
with non-optional/default fields.
