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// EXTRA_FILES: imports/testlambda1.d imports/testlambda2.d
module testlambdacomp;
void test1()
{
static assert(__traits(isSame, (a, b) => a + b, (c, d) => c + d));
static assert(__traits(isSame, a => ++a, b => ++b));
static assert(!__traits(isSame, (int a, int b) => a + b, (a, b) => a + b));
static assert(__traits(isSame, (a, b) => a + b + 10, (c, d) => c + d + 10));
}
class Y
{
static int r = 5;
int x;
this(int x)
{
this.x = x;
}
}
class A
{
Y a;
this(Y a)
{
this.a = a;
}
}
void foo3(alias pred)()
{
static assert(!__traits(isSame, pred, (A x, A y) => ++x.a.x + (--y.a.x)));
}
void test2()
{
int b;
static assert(!__traits(isSame, a => a + b, a => a + b));
int f() { return 3;}
static assert(__traits(isSame, a => a + f(), a => a + f()));
class A
{
Y a;
this(Y a)
{
this.a = a;
}
}
class B
{
int a;
this(int a)
{
this.a = a;
}
}
B q = new B(7);
alias pred = (A a, A b) => ++a.a.x + (--b.a.x);
foo3!pred();
static assert(!__traits(isSame, (A a) => ++a.a.x + 2, (A b) => ++b.a.x + 3));
static assert(__traits(isSame, pred, (A x, A y) => ++x.a.x + (--y.a.x)));
static assert(!__traits(isSame, (B a) => ++a.a + 2, (B b) => ++b.a + 3));
static assert(__traits(isSame, (B a) => ++a.a, (B a) => ++a.a));
B cl = new B(7);
static assert(!__traits(isSame, a => a + q.a, c => c + cl.a));
class C(G)
{
G a;
this(int a)
{
this.a = a;
}
}
static assert(!__traits(isSame, (C!int a) => ++a.a, (C!int a) => ++a.a));
struct X
{
int a;
}
static assert(__traits(isSame, (X a) => a.a + 2, (X b) => b.a + 2));
struct T(G)
{
G a;
}
static assert(!__traits(isSame, (T!int a) => ++a.a, (T!int a) => ++a.a));
}
void test3()
{
enum q = 10;
static assert(__traits(isSame, (a, b) => a + b + q, (c, d) => c + d + 10));
struct Bar
{
int a;
}
enum r1 = Bar(1);
enum r2 = Bar(1);
static assert(__traits(isSame, a => a + r1.a, b => b + r2.a));
enum X { A, B, C}
static assert(__traits(isSame, a => a + X.A, a => a + 0));
}
void foo(alias pred)()
{
static assert(__traits(isSame, pred, (c, d) => c + d));
static assert(__traits(isSame, (c, d) => c + d, pred));
}
void bar(alias pred)()
{
static assert(__traits(isSame, pred, (c, d) => c < d + 7));
enum q = 7;
static assert(__traits(isSame, pred, (c, d) => c < d + q));
int r = 7;
static assert(!__traits(isSame, pred, (c, d) => c < d + r));
}
void test4()
{
foo!((a, b) => a + b)();
bar!((a, b) => a < b + 7);
}
int bar()
{
return 2;
}
void testImportedFunctions(alias pred)()
{
// imports.testalambda1.bar != imports.testlambda2.bar
import imports.testlambda2 : bar;
static assert(!__traits(isSame, pred, (int a) => a + bar()));
}
void testLocalGlobalFunctionScopes(alias pred)()
{
// testlambdacomp.bar != testlambdacomp.test5.bar
static assert(!__traits(isSame, pred, (int a) => a + bar()));
// imports.testlambda1.bar != testlambdacomp.test5.bar
import imports.testlambda1 : bar;
static assert(!__traits(isSame, pred, (int a) => a + bar()));
// functions imported from different modules are not equal
testImportedFunctions!((int a) => a + bar())();
}
// lambda functions which contain function calls
void test5()
{
int bar()
{
return 3;
}
// functions in the same scope
alias pred = a => a + bar();
alias pred2 = b => b + bar();
static assert(__traits(isSame, pred, pred2));
// functions in different scopes
testLocalGlobalFunctionScopes!((int a) => a + bar())();
int foo(int a, int b)
{
return 2 + a + b;
}
// functions with different kind of parameters
alias preda23 = a => a + foo(2, 3);
alias predb23 = b => b + foo(2, 3);
alias predc24 = c => c + foo(2, 4);
alias predd23 = (int d) => d + foo(2, 3);
alias prede23 = (int e) => e + foo(2, 3);
alias predf24 = (int f) => f + foo(2, 4);
static assert(__traits(isSame, preda23, predb23));
static assert(!__traits(isSame, predc24, predd23));
static assert(__traits(isSame, predd23, prede23));
static assert(!__traits(isSame, prede23, predf24));
// functions with function calls as parameters
static assert(!__traits(isSame, (int a, int b) => foo(foo(1, a), foo(1, b)), (int a, int b) => foo(foo(1, a), foo(2, b))));
static assert(!__traits(isSame, (a, b) => foo(foo(1, a), foo(1, b)), (int a, int b) => foo(foo(1, a), foo(2, b))));
float floatFunc(float a, float b)
{
return a + b;
}
static assert(__traits(isSame, a => floatFunc(a, 1.0), b => floatFunc(b, 1.0)));
static assert(!__traits(isSame, a => floatFunc(a, 1.0), b => floatFunc(b, 2.0)));
}
void main()
{
test1();
test2();
test3();
test4();
test5();
}
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