在SystemVerilog中进行字符串搜索和替换的最简单方法是什么?
例如,我有:
string hdl_path = "DUT.my_red39";
如何创建一个用蓝色替换红色的新string
?
答案 0 :(得分:2)
您可以使用最近创建的SystemVerilog实用程序库之一。
cl::text::replace
方法svlib_pkg::Str::replace
方法或者,您可以通过比较单个字符来使用普通的SystemVerilog:
function automatic string search_replace(string original, string old, string replacement);
// First find the index of the old string
int start_index = 0;
int original_index = 0;
int replace_index = 0;
bit found = 0;
while(1) begin
if (original[original_index] == old[replace_index]) begin
if (replace_index == 0) begin
start_index = original_index;
end
replace_index++;
original_index++;
if (replace_index == old.len()) begin
found = 1;
break;
end
end else if (replace_index != 0) begin
replace_index = 0;
original_index = start_index + 1;
end else begin
original_index++;
end
if (original_index == original.len()) begin
// Not found
break;
end
end
if (!found) return original;
return {
original.substr(0, start_index-1),
replacement,
original.substr(start_index+old.len(), original.len()-1)
};
endfunction