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Lars-Peter Clausen
427091d3d3
It is allowed to access a constant declared in a class scope, such as a
enum value or parameter, on an object of that class type. This is described
in section 8.5 ("Object properties and object parameter data") of the LRM
(1800-2017).
E.g.
```
class C
enum { A } e;
endclass
C c = new;
c.e = c.A;
```
Support this by in addition of searching for class properties on the object
also search for constants in the class scope.
A bit of refactoring is needed around the parameter elaboration functions
since they expect a non-const NetScope, but for classes we only have a
const scope available.
The non-const scope is needed to be able to mark specparams as
non-annotatable. Since classes can't have specparams this part is factored
out into a separate function the NetScope parameter for the shared
functions is made const.
Signed-off-by: Lars-Peter Clausen <[email protected]>
53 lines
922 B
Verilog
53 lines
922 B
Verilog
// Check that when a enum type is declared inside a class that the enum is
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// properly installed in the scope and the enum items are available.
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//
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// Also check that when using a typedef of a enum inside a class that the enum
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// is not elaborated inside the class and it is possible to have a enum with the
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// same names inside the class scope.
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module test;
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typedef enum integer {
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A = 1
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} e1_t;
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class C;
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typedef enum integer {
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A = 10
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} e2_t;
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e1_t e1;
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e2_t e2;
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function new();
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e1 = test.A;
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e2 = A;
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endfunction
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function void set(e2_t new_e2);
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e2 = new_e2;
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endfunction
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endclass
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C c;
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initial begin
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c = new;
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c.e1 = A;
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c.set(c.e2);
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// Not yet supported
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// c.e2 = C::A;
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c.e2 = c.A;
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// Check that they have the numerical value from the right scope
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if (c.e1 == 1 && c.e2 == 10) begin
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$display("PASSED");
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end else begin
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$display("FAILED");
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end
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end
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endmodule
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