yosys/tests/fmt/always_full_tb.cc at a33acb7cd9a2366df55036db039b01b72efcc60b - mirrors/yosys - Libre-Chip.org

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Catherine a33acb7cd9 cxxrtl: refactor the formatter and use a closure.

This commit achieves three roughly equally important goals:
1. To bring the rendering code in kernel/fmt.cc and in cxxrtl.h as close
   together as possible, with an ideal of only having the bigint library
   as the difference between the render functions.
2. To make the treatment of `$time` and `$realtime` in CXXRTL closer to
   the Verilog semantics, at least in the formatting code.
3. To change the code generator so that all of the `$print`-to-`string`
   conversion code is contained inside of a closure.

There are two reasons to aim for goal (3):
a. Because output redirection through definition of a global ostream
   object is neither convenient nor useful for environments where
   the output is consumed by other code rather than being printed on
   a terminal.
b. Because it may be desirable to, in some cases, ignore the `$print`
   cells that are present in the netlist based on a runtime decision.
   This is doubly true for an upcoming `$check` cell implementing
   assertions, since failing a `$check` would by default cause a crash.

2024-01-16 16:35:51 +00:00

15 lines

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 #include "yosys-always_full.cc"
 int main()
 {
 	struct : public performer {
 		int64_t time() const override { return 1; }
 		void on_print(const std::string &output, const cxxrtl::metadata_map &) override { std::cerr << output; }
 	} performer;
 	cxxrtl_design::p_always__full uut;
 	uut.p_clk.set(!uut.p_clk);
 	uut.step(&performer);
 	return 0;
 }