Experiments/libabacus
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Create a macro for basic infix operators.

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This commit is contained in:
Danila Fedorin 2018-06-01 15:33:45 -07:00
parent 5fec3bd63c
commit c2ec44d83b
1 changed files with 19 additions and 16 deletions
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35
src/interactive.c
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@ -49,19 +49,22 @@ libab_result create_double_value(libab* ab, double val, libab_ref* into) {
return result;
}
libab_result function_operator(libab* ab, libab_ref_vec* params, libab_ref* into) {
libab_result result = LIBAB_SUCCESS;
double right;
double left;
#define OP_FUNCTION(name, expression) \
libab_result name(libab* ab, libab_ref_vec* params, libab_ref* into) { \
libab_result result = LIBAB_SUCCESS; \
double right; \
double left; \
printf(#name " called\n"); \
left = *((double*)libab_unwrap_param(params, 0)); \
right = *((double*)libab_unwrap_param(params, 1)); \
create_double_value(ab, expression, into); \
return result;\
}
printf("operator called\n");
left = *((double*)libab_unwrap_param(params, 0));
right = *((double*)libab_unwrap_param(params, 1));
create_double_value(ab, left + right, into);
return result;
}
OP_FUNCTION(function_plus, left + right)
OP_FUNCTION(function_minus, left - right)
OP_FUNCTION(function_times, left * right)
OP_FUNCTION(function_divide, left / right)
libab_result register_functions(libab* ab) {
libab_result result = LIBAB_SUCCESS;
@ -75,10 +78,10 @@ libab_result register_functions(libab* ab) {
TRY(libab_register_function(ab, "atan", &trig_type, function_atan));
TRY(libab_register_function(ab, "atan2", &atan2_type, function_atan2));
TRY(libab_register_function(ab, "plus", &atan2_type, function_operator));
TRY(libab_register_function(ab, "minus", &atan2_type, function_operator));
TRY(libab_register_function(ab, "times", &atan2_type, function_operator));
TRY(libab_register_function(ab, "divide", &atan2_type, function_operator));
TRY(libab_register_function(ab, "plus", &atan2_type, function_plus));
TRY(libab_register_function(ab, "minus", &atan2_type, function_minus));
TRY(libab_register_function(ab, "times", &atan2_type, function_times));
TRY(libab_register_function(ab, "divide", &atan2_type, function_divide));
TRY(libab_register_operator_infix(ab, "+", 0, -1, "plus"));
TRY(libab_register_operator_infix(ab, "-", 0, -1, "minus"));
TRY(libab_register_operator_infix(ab, "*", 1, -1, "times"));