nested_func_transform.h File Reference

#include <optional>
#include <string>
#include <util/base/filesystem.h>

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Functions
std::optional< file_operations::tmp_file >	transform_nested_functions (const std::string &source_path)
	Transforms GCC nested function definitions in a C source file into standard C by lambda-lifting them to file scope.

Function Documentation

transform_nested_functions()

std::optional< file_operations::tmp_file > transform_nested_functions

(

const std::string &

source_path

)

Transforms GCC nested function definitions in a C source file into standard C by lambda-lifting them to file scope.

Captured variables from enclosing scopes become explicit pointer parameters (for direct calls) or file-scope static pointer variables (when the nested function is used as a function pointer).

Returns nullopt if no nested functions are detected (fast no-op). Otherwise returns a tmp_file whose path() contains the transformed source. The caller should pass that path to Clang instead of the original.