mirror of
https://github.com/pocketpy/pocketpy
synced 2025-10-20 03:20:18 +00:00
65 lines
1.2 KiB
Python
65 lines
1.2 KiB
Python
import c
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a = c.malloc(100)
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c.free(a)
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a = c.malloc(100)
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c.memset(a, 0, 100)
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b = c.malloc(100)
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b = c.memcpy(b, a, 100)
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bp = c.p_cast(a, c.int_p)
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assert c.p_value(c.NULL) == 0
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assert c.NULL == c.NULL
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assert c.NULL != a
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for i in range(10):
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bp[i] = i
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assert bp[i] == i
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(bp+i).write(i)
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assert (bp+i).read() == i
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i = c.float_(10)
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assert i.sizeof() == 4
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j = i.copy()
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assert i == j
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assert i is not j
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####################
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class Vec2(c.struct):
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def __new__(cls, x: float, y: float):
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obj = c.struct.__new__(cls, 8)
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obj.write_float(x, 0)
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obj.write_float(y, 4)
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return obj
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@property
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def x(self) -> float:
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return self.read_float(0)
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@property
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def y(self) -> float:
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return self.read_float(4)
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def __repr__(self) -> str:
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return f"Vec2({self.x}, {self.y})"
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a = Vec2(1, 2)
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assert isinstance(a, c.struct)
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assert type(a) is Vec2
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assert repr(a) == "Vec2(1.0, 2.0)"
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a = c.struct(10)
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p = c.p_cast(a.addr(), c.char_p)
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p.write_string("Hello!")
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assert p[0] == ord("H")
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assert p[1] == ord("e")
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assert p[2] == ord("l")
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assert p[3] == ord("l")
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assert p[4] == ord("o")
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assert p[5] == ord("!")
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assert p[6] == 0
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assert p.read_string() == "Hello!"
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