1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
|
---- importing ----
if string.sub(_VERSION,1,7)=='Lua 5.0' then
-- lua5.0 doesn't have a nice way to do this
lib=loadlib('example.dll','luaopen_example') or loadlib('example.so','luaopen_example')
assert(lib)()
else
-- lua 5.1 does
require('example')
end
-- Try to set the values of some global variables
example.ivar = 42
example.svar = -31000
example.lvar = 65537
example.uivar = 123456
example.usvar = 61000
example.ulvar = 654321
example.scvar = -13
example.ucvar = 251
example.cvar = "S"
example.fvar = 3.14159
example.dvar = 2.1828
example.strvar = "Hello World"
example.iptrvar= example.new_int(37)
example.ptptr = example.new_Point(37,42)
example.name = "Bill"
-- Now print out the values of the variables
print("Variables (values printed from Lua)")
print("ivar =", example.ivar)
print("svar =", example.svar)
print("lvar =", example.lvar)
print("uivar =", example.uivar)
print("usvar =", example.usvar)
print("ulvar =", example.ulvar)
print("scvar =", example.scvar)
print("ucvar =", example.ucvar)
print("fvar =", example.fvar)
print("dvar =", example.dvar)
print("cvar =", example.cvar)
print("strvar =", example.strvar)
print("cstrvar =", example.cstrvar)
print("iptrvar =", example.iptrvar)
print("name =", example.name)
print("ptptr =", example.ptptr, example.Point_print(example.ptptr))
print("pt =", example.pt, example.Point_print(example.pt))
print("\nVariables (values printed from C)")
example.print_vars()
print "\nNow I'm going to try and modify some read only variables";
print " Trying to set 'path' to 'Whoa!'";
if pcall(function() example.path = "Whoa!" end)==true then
print " That's funny, it didn't give an error!"
else
print " It gave an error, as it should"
end
print(" Just checking the value: path =", example.path)
print " Trying to set 'status' to '0'";
if pcall(function() example.status = 0 end)==true then
print " That's funny, it didn't give an error!"
else
print " It gave an error, as it should"
end
print(" Just checking the value: status =", example.status)
print "\nI'm going to try and update a structure variable.\n"
example.pt = example.ptptr
print "The new value is"
example.pt_print()
print("You should see the value", example.Point_print(example.ptptr))
|
