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112 lines
3.0 KiB
112 lines
3.0 KiB
from sympy.core.symbol import symbols
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from sympy.printing.codeprinter import ccode
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from sympy.codegen.ast import Declaration, Variable, float64, int64, String, CodeBlock
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from sympy.codegen.cnodes import (
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alignof, CommaOperator, goto, Label, PreDecrement, PostDecrement, PreIncrement, PostIncrement,
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sizeof, union, struct
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)
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x, y = symbols('x y')
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def test_alignof():
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ax = alignof(x)
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assert ccode(ax) == 'alignof(x)'
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assert ax.func(*ax.args) == ax
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def test_CommaOperator():
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expr = CommaOperator(PreIncrement(x), 2*x)
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assert ccode(expr) == '(++(x), 2*x)'
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assert expr.func(*expr.args) == expr
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def test_goto_Label():
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s = 'early_exit'
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g = goto(s)
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assert g.func(*g.args) == g
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assert g != goto('foobar')
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assert ccode(g) == 'goto early_exit'
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l1 = Label(s)
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assert ccode(l1) == 'early_exit:'
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assert l1 == Label('early_exit')
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assert l1 != Label('foobar')
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body = [PreIncrement(x)]
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l2 = Label(s, body)
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assert l2.name == String("early_exit")
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assert l2.body == CodeBlock(PreIncrement(x))
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assert ccode(l2) == ("early_exit:\n"
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"++(x);")
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body = [PreIncrement(x), PreDecrement(y)]
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l2 = Label(s, body)
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assert l2.name == String("early_exit")
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assert l2.body == CodeBlock(PreIncrement(x), PreDecrement(y))
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assert ccode(l2) == ("early_exit:\n"
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"{\n ++(x);\n --(y);\n}")
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def test_PreDecrement():
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p = PreDecrement(x)
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assert p.func(*p.args) == p
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assert ccode(p) == '--(x)'
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def test_PostDecrement():
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p = PostDecrement(x)
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assert p.func(*p.args) == p
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assert ccode(p) == '(x)--'
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def test_PreIncrement():
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p = PreIncrement(x)
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assert p.func(*p.args) == p
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assert ccode(p) == '++(x)'
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def test_PostIncrement():
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p = PostIncrement(x)
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assert p.func(*p.args) == p
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assert ccode(p) == '(x)++'
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def test_sizeof():
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typename = 'unsigned int'
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sz = sizeof(typename)
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assert ccode(sz) == 'sizeof(%s)' % typename
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assert sz.func(*sz.args) == sz
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assert not sz.is_Atom
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assert sz.atoms() == {String('unsigned int'), String('sizeof')}
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def test_struct():
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vx, vy = Variable(x, type=float64), Variable(y, type=float64)
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s = struct('vec2', [vx, vy])
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assert s.func(*s.args) == s
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assert s == struct('vec2', (vx, vy))
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assert s != struct('vec2', (vy, vx))
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assert str(s.name) == 'vec2'
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assert len(s.declarations) == 2
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assert all(isinstance(arg, Declaration) for arg in s.declarations)
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assert ccode(s) == (
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"struct vec2 {\n"
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" double x;\n"
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" double y;\n"
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"}")
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def test_union():
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vx, vy = Variable(x, type=float64), Variable(y, type=int64)
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u = union('dualuse', [vx, vy])
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assert u.func(*u.args) == u
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assert u == union('dualuse', (vx, vy))
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assert str(u.name) == 'dualuse'
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assert len(u.declarations) == 2
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assert all(isinstance(arg, Declaration) for arg in u.declarations)
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assert ccode(u) == (
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"union dualuse {\n"
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" double x;\n"
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" int64_t y;\n"
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"}")
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