_lazyNut_ interpreter keywords ============================== Most _lazyNut_ lines have the format `object-name method-name ...`. The following are the strings that are interpreted in a special way by _lazyNut_ if they occur at the beginning of a line. They should not be used for object names. query or any string beginning with a digit ------------------------------------------ query any-command... 10 any-command... exectues `any-command` The whole command, including the query string is echoed in the BEGIN and END strings. xml --- xml any-command... Excecutes `any-command` with the requests that any command ANSWERs are emitted in computer-readable xml. xmllint ------- xmllint 1 Request all future xml is emitted with newlines and indentation for human readability. xmllint 0 Rescind a prior request for readability. quietly ------- quietly any-command... Sets the loglevel to *error*, executes `any-command`, and reinstates the prior loglevel. loglevel -------- loglevel loglevel-string Sets the loglevel to `loglevel-string`. The loglevel determines the minimum severity level of message to be emitted. Valid levels, in decreasing severity, are: `answer`, `r`, `error`, `ok`, `warning`, `info`, `debug`. CRASH ----- CRASH Deliberately produce an abnormal program termination event for testing purposes. recently_created ---------------- recently_created Emit the list of all (non-anonymous) objects that have been recently created. recently_created base_type_name Emit the list of all (non-anonymous) objects whose base type is `base_type_name` that have been recently created. clear_recently_created ---------------------- clear_recently_created Clear the list of all (non-anonymous) objects that have been recently created. clear_recently_created base_type_name Clear the list of all (non-anonymous) objects whose base type is `base_type_name` that have been recently created. recently_destroyed ------------------ recently_destroyed Emit the list of all (non-anonymous) objects that have been recently destroyed. recently_destroyed base_type_name Emit the list of all (non-anonymous) objects whose base type is `base_type_name` that have been recently destroyed. clear_recently_destroyed ------------------------ clear_recently-destroyed Clear the list of all (non-anonymous) objects that have been recently destroyed. clear_recently-destroyed base-type-name Clear the list of all (non-anonymous) objects whose base type is `base-type-name` that have been recently destroyed. recently_modified ----------------- recently_modified Emit the list of all (non-anonymous) objects that have been recently modified. recently_modified base-type-name Emit the list of all (non-anonymous) objects whose base type is `base-type-name` that have been recently modified. clear_recently_modified ----------------------- clear_recently-modified Clear the list of all (non-anonymous) objects that have been recently modified. clear_recently-modified base-type-name Clear the list of all (non-anonymous) objects whose base type is `base-type-name` that have been recently modified. version ------- version Emit a version string. shush ----- shush Shorthand for: `loglevel error` unshush ------- unshush Shorthand for: `loglevel info` include ------- include filename... Load the file `filename` and process each of its lines as _lazyNut_ commands. create ------ create type object-name Create an object with name `object-name` and type `type`. `type` may either be a base type, in which case the object is created with no facets; or it may be a subtype, in which case the corresponding base type object is created and populated with facets appropriate to the type. If the interpreter is not currently aware of a type or subtype called `type`, it will attempt to load the module `type`.so to resolve the problem. destroy ------- destroy object-name Destroy the object `object-name`. Only objects that have been `create`d may be destroyed. load ---- load index so-name Load the module `so-name` from disk and store with name `index`. `index` should be unique. until ----- until truth-object any-command... Repeatedly excute `any-command` until `truth-object` can be interpreted as true. Normally only `observer` objects or explicit logic operations (`less`; `or`; etc...) are interpretable as truth values. if -- if truth-object any-command... Execute `any-command` if (any only if) `truth-object` can be intrepreted as true. exists ------ exists test-object Returns an object that will be interpreted as true if the expression `test-object` returns an object, otherwise returns an object that will be interpreted as false. not --- not truth-object Returns an object that will have the opposite truth-value-interpretation to `truth-object`. list ---- list type Lists known base types. list library Lists loaded libraries. list type Lists all objects with base type `type`. list facet Lists all objects that have a facet of facet type `facet`. facets ------ facets facet-role Lists all known facets that can be used in a facet slot of role `facet-role`. loop ---- loop integer-count any-commmand... Execute `any-command` `integer-count` times. less ---- less pattern1 pattern2 Return a truth value indicating whether the pattern ordering of `pattern1` and `pattern2` has `pattern1` before `pattern2`. or -- or truth1 truth2 Return a truth value that is the logical OR of `truth1` and `truth2` and --- and truth1 truth2 Return a truth value that is the logical AND of `truth1` and `truth2` default_model ------------- default_model Return the currently default model. set_default_model ----------------- set_default_model model-object Set the currently default model to `model-object` named_loop ---------- named_loop integer-count name any-commmand... Execute `any-command` `integer-count` times, setting a local macro variable `name` to 1 during the first execution and incrementing on each execution. creators -------- creators type List the commands that directly or indirectly create an object of type `type`, which may be a base type or a subtype. subtypes -------- subtypes base-type List all known subtypes of base type `base-type`. aesthetic or any string beginning with # ---------------------------------------- aesthetic blah # blah No-op. stop ---- stop Renders all future commands no-ops, until the nesting level returns to zero. This will, for instance, ignore all further lines in an included file. watchlist --------- watchlist stalkee Emit information about which objects have requested notification when `stalkee` is modified or destroyed. limit_descriptions and unlimit_descriptions ------------------------------------------- limit_descriptions unlimit_descriptions No-op. set --- set macro-name value Globally set the macro variable `macro-name` to have value `value`. `value` may begin with a $ symbol and may refer to an existing macro, which is evaluated immediately, or a yet-to-exist macro, which is evaluate at time-of-use. get --- get macro-names... Emit the global values of macro variables listed in `macro-names`. unset ----- unset macro-names... Delete the global macro variables listed in macro-names. R - R << R-commmand R | R-command R cmd R-command Send R-command to the attached R interpreter. Be aware that implicit print is off in R; if output is desired, print(...) must be used.