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expr2c/{r,w,rw}_ok: add a dedicated method #7460

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Merged
merged 1 commit into from
Jan 3, 2023
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expr2c/{r,w,rw}_ok: add a dedicated method #7460

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24 changes: 21 additions & 3 deletions src/ansi-c/expr2c.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -3554,6 +3554,24 @@ std::string expr2ct::convert_bitreverse(const bitreverse_exprt &src)
return convert_norep(src, precedence);
}

std::string expr2ct::convert_r_or_w_ok(const r_or_w_ok_exprt &src)
{
std::string dest = src.id() == ID_r_ok ? "R_OK"
: src.id() == ID_w_ok ? "W_OK"
: "RW_OK";

dest += '(';

unsigned p;
dest += convert_with_precedence(src.pointer(), p);
dest += ", ";
dest += convert_with_precedence(src.size(), p);

dest += ')';

return dest;
}

std::string expr2ct::convert_with_precedence(
const exprt &src,
unsigned &precedence)
Expand Down Expand Up @@ -3963,6 +3981,9 @@ std::string expr2ct::convert_with_precedence(
else if(src.id() == ID_bitreverse)
return convert_bitreverse(to_bitreverse_expr(src));

else if(src.id() == ID_r_ok || src.id() == ID_w_ok || src.id() == ID_rw_ok)
return convert_r_or_w_ok(to_r_or_w_ok_expr(src));

auto function_string_opt = convert_function(src);
if(function_string_opt.has_value())
return *function_string_opt;
Expand Down Expand Up @@ -4018,9 +4039,6 @@ optionalt<std::string> expr2ct::convert_function(const exprt &src)
{ID_loop_entry, CPROVER_PREFIX "loop_entry"},
{ID_saturating_minus, CPROVER_PREFIX "saturating_minus"},
{ID_saturating_plus, CPROVER_PREFIX "saturating_plus"},
{ID_r_ok, "R_OK"},
{ID_w_ok, "W_OK"},
{ID_rw_ok, "RW_OK"},
{ID_width, "WIDTH"},
};

Expand Down
3 changes: 3 additions & 0 deletions src/ansi-c/expr2c_class.h
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Expand Up @@ -26,6 +26,7 @@ Author: Daniel Kroening, [email protected]
class annotated_pointer_constant_exprt;
class qualifierst;
class namespacet;
class r_or_w_ok_exprt;

class expr2ct
{
Expand Down Expand Up @@ -281,6 +282,8 @@ class expr2ct

std::string convert_conditional_target_group(const exprt &src);
std::string convert_bitreverse(const bitreverse_exprt &src);

std::string convert_r_or_w_ok(const r_or_w_ok_exprt &src);
};

#endif // CPROVER_ANSI_C_EXPR2C_CLASS_H