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50 lines
790 B
50 lines
790 B
3 years ago
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# libsm
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Contextual state machine (generator methods) implementation in basic C++, using mostly C constructs.
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(TODO: Explain what is and isn't supported)
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## Example
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Output values of any type
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``` c++
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#include <sm/state.h>
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#include <sm/gen.h>
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#include <cstdio>
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SM_GENERATOR(powers_of_two)
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{
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int* a = SM_VAR(1);
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SM_BEGIN;
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{
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while( (*a) > 0 ) {
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SM_YIELD_VALUE(*a);
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(*a) <<= 1;
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}
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}
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SM_END;
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}
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int main()
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{
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auto state = sm_new_state();
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auto gen = sm_generate(&powers_of_two);
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sm_output output;
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int out_int;
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while(sm_next(&gen, state, &output)) {
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if(!sm_output_value(output, &out_int))
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continue;
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printf("Power of two: %d\n", out_int);
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}
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sm_free_output(&output);
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sm_free_generator(gen);
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sm_free_state(state);
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return 0;
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}
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```
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