e4a7b317e1
* with-decorator: Allow a `setv` form as the form to be decorated This feature is of dubious value by itself, but it's necessary to allow `defn` to create a lambda instead of a `def`. * Make `fn` work the same as `lambda` That is, allow it to generate a `lambda` instead of a `def` statement if the function body is just an expression. I've removed two uses of with_decorator in hy.compiler because they'd require adding another case to HyASTCompiler.compile_decorate_expression and they have no ultimate effect, anyway. In a few tests, I've added a meaningless statement in `fn` bodies to force generation of a `def`. I've removed `test_fn_compiler_empty_function` rather than rewrite it because it seems like a pain to maintain and not very useful. * Remove `lambda`, now that `fn` does the same thing
94 lines
3.3 KiB
Hy
94 lines
3.3 KiB
Hy
;; Copyright (c) 2014 Paul Tagliamonte <paultag@debian.org>
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;; Copyright (c) 2014 James King <james@agentultra.com>
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;; Permission is hereby granted, free of charge, to any person obtaining a
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;; copy of this software and associated documentation files (the "Software"),
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;; to deal in the Software without restriction, including without limitation
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;; the rights to use, copy, modify, merge, publish, distribute, sublicense,
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;; and/or sell copies of the Software, and to permit persons to whom the
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;; Software is furnished to do so, subject to the following conditions:
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;; The above copyright notice and this permission notice shall be included in
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;; all copies or substantial portions of the Software.
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;; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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;; IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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;; FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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;; THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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;; LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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;; FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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;; DEALINGS IN THE SOFTWARE.
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;;;; Hy shadow functions
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(import operator)
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(defn + [&rest args]
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"Shadow + operator for when we need to import / map it against something"
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(if
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(= (len args) 1)
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(operator.pos (get args 0))
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args
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(reduce operator.add args)
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(raise (TypeError "Need at least 1 argument to add/concatenate"))))
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(defn - [&rest args]
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"Shadow - operator for when we need to import / map it against something"
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(if
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(= (len args) 1)
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(- (get args 0))
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args
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(reduce operator.sub args)
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(raise (TypeError "Need at least 1 argument to subtract"))))
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(defn * [&rest args]
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"Shadow * operator for when we need to import / map it against something"
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(if (= (len args) 0)
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1 ; identity
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(reduce operator.mul args)))
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(defn / [&rest args]
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"Shadow / operator for when we need to import / map it against something"
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(if
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(= (len args) 1)
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(operator.truediv 1 (get args 0))
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args
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(reduce operator.truediv args)
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(raise (TypeError "Need at least 1 argument to divide"))))
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(defn comp-op [op args]
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"Helper for shadow comparison operators"
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(if (< (len args) 2)
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(raise (TypeError "Need at least 2 arguments to compare"))
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(reduce (fn [x y] (and x y))
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(list-comp (op x y)
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[(, x y) (zip args (cut args 1))]))))
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(defn < [&rest args]
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"Shadow < operator for when we need to import / map it against something"
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(comp-op operator.lt args))
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(defn <= [&rest args]
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"Shadow <= operator for when we need to import / map it against something"
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(comp-op operator.le args))
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(defn = [&rest args]
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"Shadow = operator for when we need to import / map it against something"
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(comp-op operator.eq args))
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(defn != [&rest args]
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"Shadow != operator for when we need to import / map it against something"
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(comp-op operator.ne args))
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(defn >= [&rest args]
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"Shadow >= operator for when we need to import / map it against something"
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(comp-op operator.ge args))
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(defn > [&rest args]
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"Shadow > operator for when we need to import / map it against something"
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(comp-op operator.gt args))
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; TODO figure out a way to shadow "is", "is_not", "and", "or"
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(setv *exports* ['+ '- '* '/ '< '<= '= '!= '>= '>])
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