64 lines
1.4 KiB
Hy
64 lines
1.4 KiB
Hy
(defmacro rev [&rest body]
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"Execute the `body` statements in reverse"
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(quasiquote (do (unquote-splice (list (reversed body))))))
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(defn test-rev-macro []
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"NATIVE: test stararged native macros"
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(setv x [])
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(rev (.append x 1) (.append x 2) (.append x 3))
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(assert (= x [3 2 1])))
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; Macros returning constants
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(defmacro an-int [] 42)
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(assert (= (an-int) 42))
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(defmacro a-true [] True)
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(assert (= (a-true) True))
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(defmacro a-false [] False)
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(assert (= (a-false) False))
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(defmacro a-float [] 42.)
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(assert (= (a-float) 42.))
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(defmacro a-complex [] 42j)
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(assert (= (a-complex) 42j))
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(defmacro a-string [] "foo")
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(assert (= (a-string) "foo"))
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(defmacro a-list [] [1 2])
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(assert (= (a-list) [1 2]))
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(defmacro a-dict [] {1 2})
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(assert (= (a-dict) {1 2}))
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; A macro calling a previously defined function
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(eval-when-compile
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(defn foo [x y]
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(quasiquote (+ (unquote x) (unquote y)))))
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(defmacro bar [x y]
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(foo x y))
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(defn test-fn-calling-macro []
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"NATIVE: test macro calling a plain function"
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(assert (= 3 (bar 1 2))))
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; Macro that checks a variable defined at compile or load time
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(setv phase "load")
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(eval-when-compile
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(setv phase "compile"))
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(defmacro phase-when-compiling [] phase)
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(assert (= phase "load"))
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(assert (= (phase-when-compiling) "compile"))
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(setv initialized False)
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(eval-and-compile
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(setv initialized True))
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(defmacro test-initialized [] initialized)
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(assert initialized)
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(assert (test-initialized))
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