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Work on making range take non-integer values.

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This commit is contained in:
Calvin Rose 2024-07-11 08:05:52 -05:00
parent 0f4ecd93ab
commit 4835ecb950
2 changed files with 67 additions and 55 deletions
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97
src/boot/boot.janet
View File

@ -153,6 +153,51 @@
,v
(,error ,(if err err (string/format "assert failure in %j" x))))))
(defmacro defdyn
``Define an alias for a keyword that is used as a dynamic binding. The
alias is a normal, lexically scoped binding that can be used instead of
a keyword to prevent typos. `defdyn` does not set dynamic bindings or otherwise
replace `dyn` and `setdyn`. The alias _must_ start and end with the `*` character, usually
called "earmuffs".``
[alias & more]
(assert (symbol? alias) "alias must be a symbol")
(assert (> (length alias) 2) "name must have leading and trailing '*' characters")
(assert (= 42 (get alias 0) (get alias (- (length alias) 1))) "name must have leading and trailing '*' characters")
(def prefix (dyn :defdyn-prefix))
(def kw (keyword prefix (slice alias 1 -2)))
~(def ,alias :dyn ,;more ,kw))
(defdyn *macro-form*
"Inside a macro, is bound to the source form that invoked the macro")
(defdyn *lint-error*
"The current lint error level. The error level is the lint level at which compilation will exit with an error and not continue.")
(defdyn *lint-warn*
"The current lint warning level. The warning level is the lint level at which and error will be printed but compilation will continue as normal.")
(defdyn *lint-levels*
"A table of keyword alias to numbers denoting a lint level. Can be used to provided custom aliases for numeric lint levels.")
(defdyn *macro-lints*
``Bound to an array of lint messages that will be reported by the compiler inside a macro.
To indicate an error or warning, a macro author should use `maclintf`.``)
(defn maclintf
``When inside a macro, call this function to add a linter warning. Takes
a `fmt` argument like `string/format`, which is used to format the message.``
[level fmt & args]
(def lints (dyn *macro-lints*))
(if lints
(do
(def form (dyn *macro-form*))
(def [l c] (if (tuple? form) (tuple/sourcemap form) [nil nil]))
(def l (if (not= -1 l) l))
(def c (if (not= -1 c) c))
(def msg (string/format fmt ;args))
(array/push lints [level l c msg])))
nil)
(defn errorf
"A combination of `error` and `string/format`. Equivalent to `(error (string/format fmt ;args))`."
[fmt & args]
@ -531,6 +576,11 @@
[x ds & body]
(each-template x ds :each body))
(defn- check-empty-body
[body]
(if (= (length body) 0)
(maclintf :normal "empty loop body")))
(defmacro loop
```
A general purpose loop macro. This macro is similar to the Common Lisp loop
@ -602,6 +652,7 @@
The `loop` macro always evaluates to nil.
```
[head & body]
(check-empty-body body)
(loop1 body head 0))
(defmacro seq
@ -609,6 +660,7 @@
See `loop` for details.``
[head & body]
(def $accum (gensym))
(check-empty-body body)
~(do (def ,$accum @[]) (loop ,head (,array/push ,$accum (do ,;body))) ,$accum))
(defmacro catseq
@ -616,6 +668,7 @@
See `loop` for details.``
[head & body]
(def $accum (gensym))
(check-empty-body body)
~(do (def ,$accum @[]) (loop ,head (,array/concat ,$accum (do ,;body))) ,$accum))
(defmacro tabseq
@ -629,6 +682,7 @@
``Create a generator expression using the `loop` syntax. Returns a fiber
that yields all values inside the loop in order. See `loop` for details.``
[head & body]
(check-empty-body body)
~(,fiber/new (fn :generate [] (loop ,head (yield (do ,;body)))) :yi))
(defmacro coro
@ -1207,19 +1261,6 @@
(array/push parts (tuple apply f $args)))
(tuple 'fn :juxt (tuple '& $args) (tuple/slice parts 0)))
(defmacro defdyn
``Define an alias for a keyword that is used as a dynamic binding. The
alias is a normal, lexically scoped binding that can be used instead of
a keyword to prevent typos. `defdyn` does not set dynamic bindings or otherwise
replace `dyn` and `setdyn`. The alias _must_ start and end with the `*` character, usually
called "earmuffs".``
[alias & more]
(assert (symbol? alias) "alias must be a symbol")
(assert (and (> (length alias) 2) (= 42 (first alias) (last alias))) "name must have leading and trailing '*' characters")
(def prefix (dyn :defdyn-prefix))
(def kw (keyword prefix (slice alias 1 -2)))
~(def ,alias :dyn ,;more ,kw))
(defn has-key?
"Check if a data structure `ds` contains the key `key`."
[ds key]
@ -1240,18 +1281,6 @@
(defdyn *exit-value* "Set the return value from `run-context` upon an exit. By default, `run-context` will return nil.")
(defdyn *task-id* "When spawning a thread or fiber, the task-id can be assigned for concurrency control.")
(defdyn *macro-form*
"Inside a macro, is bound to the source form that invoked the macro")
(defdyn *lint-error*
"The current lint error level. The error level is the lint level at which compilation will exit with an error and not continue.")
(defdyn *lint-warn*
"The current lint warning level. The warning level is the lint level at which and error will be printed but compilation will continue as normal.")
(defdyn *lint-levels*
"A table of keyword alias to numbers denoting a lint level. Can be used to provided custom aliases for numeric lint levels.")
(defdyn *current-file*
"Bound to the name of the currently compiling file.")
@ -2035,24 +2064,6 @@
###
###
(defdyn *macro-lints*
``Bound to an array of lint messages that will be reported by the compiler inside a macro.
To indicate an error or warning, a macro author should use `maclintf`.``)
(defn maclintf
``When inside a macro, call this function to add a linter warning. Takes
a `fmt` argument like `string/format`, which is used to format the message.``
[level fmt & args]
(def lints (dyn *macro-lints*))
(when lints
(def form (dyn *macro-form*))
(def [l c] (if (tuple? form) (tuple/sourcemap form) [nil nil]))
(def l (if-not (= -1 l) l))
(def c (if-not (= -1 c) c))
(def msg (string/format fmt ;args))
(array/push lints [level l c msg]))
nil)
(defn macex1
``Expand macros in a form, but do not recursively expand macros.
See `macex` docs for info on `on-binding`.``

25
src/core/corelib.c
View File

@ -432,27 +432,28 @@ JANET_CORE_FN(janet_core_range,
"With one argument, returns a range [0, end). With two arguments, returns "
"a range [start, end). With three, returns a range with optional step size.") {
janet_arity(argc, 1, 3);
int32_t start = 0, stop = 0, step = 1, count = 0;
double start = 0, stop = 0, step = 1, count = 0;
if (argc == 3) {
start = janet_getinteger(argv, 0);
stop = janet_getinteger(argv, 1);
step = janet_getinteger(argv, 2);
count = (step > 0) ? (stop - start - 1) / step + 1 :
((step < 0) ? (stop - start + 1) / step + 1 : 0);
start = janet_getnumber(argv, 0);
stop = janet_getnumber(argv, 1);
step = janet_getnumber(argv, 2);
count = (step > 0) ? (stop - start) / step :
((step < 0) ? (stop - start) / step : 0);
} else if (argc == 2) {
start = janet_getinteger(argv, 0);
stop = janet_getinteger(argv, 1);
start = janet_getnumber(argv, 0);
stop = janet_getnumber(argv, 1);
count = stop - start;
} else {
stop = janet_getinteger(argv, 0);
stop = janet_getnumber(argv, 0);
count = stop;
}
count = (count > 0) ? count : 0;
JanetArray *array = janet_array(count);
for (int32_t i = 0; i < count; i++) {
int32_t int_count = ceil(count);
JanetArray *array = janet_array(int_count);
for (int32_t i = 0; i < int_count; i++) {
array->data[i] = janet_wrap_number(start + i * step);
}
array->count = count;
array->count = int_count;
return janet_wrap_array(array);
}