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rust: Fixed MakeCamelCase (#4932) (#4936)

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* Fixed MakeCamelCase behavior when supplied Upper_Camel_Case,
snake_case and UPPERCASE strings.
* Modified the rust integration test to reflect changes.
This commit is contained in:
jean-airoldie
2018-09-26 16:35:02 -04:00
committed by Robert
parent 49fed8c4f6
commit c56fff88a2
4 changed files with 18 additions and 12 deletions
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14
src/idl_gen_rust.cpp
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@@ -33,13 +33,19 @@ static std::string GeneratedFileName(const std::string &path,
std::string MakeSnakeCase(const std::string &in) {
std::string s;
for (size_t i = 0; i < in.length(); i++) {
if (islower(in[i])) {
s += static_cast<char>(in[i]);
} else {
if (i > 0) {
if (i == 0) {
s += static_cast<char>(tolower(in[0]));
} else if (in[i] == '_') {
s += '_';
} else if (!islower(in[i])) {
// Prevent duplicate underscores for Upper_Snake_Case strings
// and UPPERCASE strings.
if (islower(in[i - 1])) {
s += '_';
}
s += static_cast<char>(tolower(in[i]));
} else {
s += in[i];
}
}
return s;