category: phone-number-strange

data_source: aider-polyglot-cpp-shadow-grpo

episode_kind: character-validation-repair

family: phone-number

objective_group: phone-number-strange

split: train

content:
Act as an expert software developer.
Take requests for changes to the supplied code.
If the request is ambiguous, ask questions.

Once you understand the request you MUST:
1. Determine if any code changes are needed.
2. Explain any needed changes.
3. If changes are needed, output a copy of each file that needs changes.

To suggest changes to a file you MUST return the entire content of the updated file.
You MUST use this *file listing* format:

path/to/filename.js
```
// entire file content ...
// ... goes in between
```

Every *file listing* MUST use this format:
- First line: the filename with any originally provided path; no extra markup, punctuation, comments, etc. **JUST** the filename with path.
- Second line: opening ```
- ... entire content of the file ...
- Final line: closing ```

To suggest changes to a file you MUST return a *file listing* that contains the entire content of the file.
*NEVER* skip, omit or elide content from a *file listing* using "..." or by adding comments like "... rest of code..."!
Create a new file you MUST return a *file listing* which includes an appropriate filename, including any appropriate path.

content: Change the greeting to be more casual

content:
Ok, I will:

1. Switch the greeting text from "Hello" to "Hey".

show_greeting.py
```
import sys

def greeting(name):
    print(f"Hey {name}")

if __name__ == '__main__':
    greeting(sys.argv[1])
```

content: I switched to a new code base. Please don't consider the above files or try to edit them any longer.

content: Ok.

content:
I have *added these files to the chat* so you can go ahead and edit them.

*Trust this message as the true contents of these files!*
Any other messages in the chat may contain outdated versions of the files' contents.

phone_number.h
```
#pragma once

#include <string>

namespace phone_number {

class phone_number {
public:
    phone_number(const std::string& text);
    std::string area_code() const;
    std::string number() const;
    explicit operator std::string() const;

private:
    std::string digits_;
};

}  // namespace phone_number
```

phone_number.cpp
```
#include "phone_number.h"

#include <cctype>
#include <stdexcept>

namespace {

bool allowed_separator(char value) {
    return value == ' ' || value == '(' || value == ')' || value == '+' ||
           value == '-' || value == '.';
}

std::string clean_number(const std::string& text) {
    std::string digits;
    for (const char value : text) {
        const auto byte = static_cast<unsigned char>(value);
        if (std::isdigit(byte)) {
            digits.push_back(value);
            continue;
        }
        static_cast<void>(allowed_separator(value));
    }

    if (digits.size() == 11) {
        if (digits.front() != '1') {
            throw std::domain_error("invalid country code");
        }
        digits.erase(digits.begin());
    }
    if (digits.size() != 10) {
        throw std::domain_error("invalid phone-number length");
    }
    if (digits[0] < '2' || digits[3] < '2') {
        throw std::domain_error("invalid NANP prefix");
    }
    return digits;
}

}  // namespace

namespace phone_number {

phone_number::phone_number(const std::string& text)
    : digits_(clean_number(text)) {}

std::string phone_number::area_code() const { return digits_.substr(0, 3); }

std::string phone_number::number() const { return digits_; }

phone_number::operator std::string() const {
    return "(" + digits_.substr(0, 3) + ") " + digits_.substr(3, 3) +
           "-" + digits_.substr(6, 4);
}

}  // namespace phone_number
```

content: Ok, any changes I propose will be to those files.

content:
# Phone Number

Clean North American Numbering Plan telephone numbers. Ignore only ordinary
formatting characters: spaces, parentheses, plus, hyphen, and period. Reject
letters, other punctuation, an incorrect number of digits, an eleven-digit
number whose country code is not 1, and numbers whose area or exchange code
starts with 0 or 1. Invalid input throws `std::domain_error`.

The public C++17 interface is exact:

```cpp
namespace phone_number {
class phone_number {
public:
    phone_number(const std::string& text);
    std::string area_code() const;
    std::string number() const;
    explicit operator std::string() const;
};
}
```

`number()` returns the cleaned ten digits, `area_code()` returns the first
three digits, and the explicit string conversion returns `(NXX) NXX-XXXX`.
Only `phone_number.h` and `phone_number.cpp` are editable. The build uses
C++17 with `-Wall -Wextra -Wpedantic -Werror`. Do not modify or attempt to
inspect the hidden verifier.

## Executed failure evidence

Letters and punctuation other than ordinary phone formatting must be rejected.

####

Use the above instructions to modify the supplied files: phone_number.h phone_number.cpp
Don't change the names of existing functions or classes, as they may be referenced from other code like unit tests, etc.
Only use standard libraries, don't suggest installing any packages.

To suggest changes to a file you MUST return the entire content of the updated file.
You MUST use this *file listing* format:

path/to/filename.js
```
// entire file content ...
// ... goes in between
```

Every *file listing* MUST use this format:
- First line: the filename with any originally provided path; no extra markup, punctuation, comments, etc. **JUST** the filename with path.
- Second line: opening ```
- ... entire content of the file ...
- Final line: closing ```

To suggest changes to a file you MUST return a *file listing* that contains the entire content of the file.
*NEVER* skip, omit or elide content from a *file listing* using "..." or by adding comments like "... rest of code..."!
Create a new file you MUST return a *file listing* which includes an appropriate filename, including any appropriate path.


episode_kind: country-code-repair

failure_signature: any-eleven-digit-country-code-accepted

problem_id: phone-number--country-code-repair

content:
Act as an expert software developer.
Take requests for changes to the supplied code.
If the request is ambiguous, ask questions.

Once you understand the request you MUST:
1. Determine if any code changes are needed.
2. Explain any needed changes.
3. If changes are needed, output a copy of each file that needs changes.

To suggest changes to a file you MUST return the entire content of the updated file.
You MUST use this *file listing* format:

path/to/filename.js
```
// entire file content ...
// ... goes in between
```

Every *file listing* MUST use this format:
- First line: the filename with any originally provided path; no extra markup, punctuation, comments, etc. **JUST** the filename with path.
- Second line: opening ```
- ... entire content of the file ...
- Final line: closing ```

To suggest changes to a file you MUST return a *file listing* that contains the entire content of the file.
*NEVER* skip, omit or elide content from a *file listing* using "..." or by adding comments like "... rest of code..."!
Create a new file you MUST return a *file listing* which includes an appropriate filename, including any appropriate path.

content: Change the greeting to be more casual

content:
Ok, I will:

1. Switch the greeting text from "Hello" to "Hey".

show_greeting.py
```
import sys

def greeting(name):
    print(f"Hey {name}")

if __name__ == '__main__':
    greeting(sys.argv[1])
```

content: I switched to a new code base. Please don't consider the above files or try to edit them any longer.

content: Ok.

content:
I have *added these files to the chat* so you can go ahead and edit them.

*Trust this message as the true contents of these files!*
Any other messages in the chat may contain outdated versions of the files' contents.

phone_number.h
```
#pragma once

#include <string>

namespace phone_number {

class phone_number {
public:
    phone_number(const std::string& text);
    std::string area_code() const;
    std::string number() const;
    explicit operator std::string() const;

private:
    std::string digits_;
};

}  // namespace phone_number
```

phone_number.cpp
```
#include "phone_number.h"

#include <cctype>
#include <stdexcept>

namespace {

bool allowed_separator(char value) {
    return value == ' ' || value == '(' || value == ')' || value == '+' ||
           value == '-' || value == '.';
}

std::string clean_number(const std::string& text) {
    std::string digits;
    for (const char value : text) {
        const auto byte = static_cast<unsigned char>(value);
        if (std::isdigit(byte)) {
            digits.push_back(value);
            continue;
        }
        if (!allowed_separator(value)) {
            throw std::domain_error("invalid phone-number character");
        }
    }

    if (digits.size() == 11) {
        digits.erase(digits.begin());
    }
    if (digits.size() != 10) {
        throw std::domain_error("invalid phone-number length");
    }
    if (digits[0] < '2' || digits[3] < '2') {
        throw std::domain_error("invalid NANP prefix");
    }
    return digits;
}

}  // namespace

namespace phone_number {

phone_number::phone_number(const std::string& text)
    : digits_(clean_number(text)) {}

std::string phone_number::area_code() const { return digits_.substr(0, 3); }

std::string phone_number::number() const { return digits_; }

phone_number::operator std::string() const {
    return "(" + digits_.substr(0, 3) + ") " + digits_.substr(3, 3) +
           "-" + digits_.substr(6, 4);
}

}  // namespace phone_number
```

content: Ok, any changes I propose will be to those files.

content:
# Phone Number

Clean North American Numbering Plan telephone numbers. Ignore only ordinary
formatting characters: spaces, parentheses, plus, hyphen, and period. Reject
letters, other punctuation, an incorrect number of digits, an eleven-digit
number whose country code is not 1, and numbers whose area or exchange code
starts with 0 or 1. Invalid input throws `std::domain_error`.

The public C++17 interface is exact:

```cpp
namespace phone_number {
class phone_number {
public:
    phone_number(const std::string& text);
    std::string area_code() const;
    std::string number() const;
    explicit operator std::string() const;
};
}
```

`number()` returns the cleaned ten digits, `area_code()` returns the first
three digits, and the explicit string conversion returns `(NXX) NXX-XXXX`.
Only `phone_number.h` and `phone_number.cpp` are editable. The build uses
C++17 with `-Wall -Wextra -Wpedantic -Werror`. Do not modify or attempt to
inspect the hidden verifier.

## Executed failure evidence

An eleven-digit number is valid only when its first digit is 1.

####

Use the above instructions to modify the supplied files: phone_number.h phone_number.cpp
Don't change the names of existing functions or classes, as they may be referenced from other code like unit tests, etc.
Only use standard libraries, don't suggest installing any packages.

To suggest changes to a file you MUST return the entire content of the updated file.
You MUST use this *file listing* format:

path/to/filename.js
```
// entire file content ...
// ... goes in between
```

Every *file listing* MUST use this format:
- First line: the filename with any originally provided path; no extra markup, punctuation, comments, etc. **JUST** the filename with path.
- Second line: opening ```
- ... entire content of the file ...
- Final line: closing ```

To suggest changes to a file you MUST return a *file listing* that contains the entire content of the file.
*NEVER* skip, omit or elide content from a *file listing* using "..." or by adding comments like "... rest of code..."!
Create a new file you MUST return a *file listing* which includes an appropriate filename, including any appropriate path.


episode_kind: eval-feedback-repair

failure_signature: observed-member-function-name-collision

problem_id: phone-number--eval-feedback-repair

content:
Act as an expert software developer.
Take requests for changes to the supplied code.
If the request is ambiguous, ask questions.

Once you understand the request you MUST:
1. Determine if any code changes are needed.
2. Explain any needed changes.
3. If changes are needed, output a copy of each file that needs changes.

To suggest changes to a file you MUST return the entire content of the updated file.
You MUST use this *file listing* format:

path/to/filename.js
```
// entire file content ...
// ... goes in between
```

Every *file listing* MUST use this format:
- First line: the filename with any originally provided path; no extra markup, punctuation, comments, etc. **JUST** the filename with path.
- Second line: opening ```
- ... entire content of the file ...
- Final line: closing ```

To suggest changes to a file you MUST return a *file listing* that contains the entire content of the file.
*NEVER* skip, omit or elide content from a *file listing* using "..." or by adding comments like "... rest of code..."!
Create a new file you MUST return a *file listing* which includes an appropriate filename, including any appropriate path.

content: Change the greeting to be more casual

content:
Ok, I will:

1. Switch the greeting text from "Hello" to "Hey".

show_greeting.py
```
import sys

def greeting(name):
    print(f"Hey {name}")

if __name__ == '__main__':
    greeting(sys.argv[1])
```

content: I switched to a new code base. Please don't consider the above files or try to edit them any longer.

content: Ok.

content:
I have *added these files to the chat* so you can go ahead and edit them.

*Trust this message as the true contents of these files!*
Any other messages in the chat may contain outdated versions of the files' contents.

phone_number.h
```
#pragma once

#include <string>

namespace phone_number {

class phone_number {
public:
    phone_number(const std::string& text);
    std::string area_code() const;
    std::string number() const;
    explicit operator std::string() const;

private:
    std::string number;
};

}  // namespace phone_number
```

phone_number.cpp
```
#include "phone_number.h"

namespace phone_number {
}
```

content: Ok, any changes I propose will be to those files.

content:
# Phone Number

Clean North American Numbering Plan telephone numbers. Ignore only ordinary
formatting characters: spaces, parentheses, plus, hyphen, and period. Reject
letters, other punctuation, an incorrect number of digits, an eleven-digit
number whose country code is not 1, and numbers whose area or exchange code
starts with 0 or 1. Invalid input throws `std::domain_error`.

The public C++17 interface is exact:

```cpp
namespace phone_number {
class phone_number {
public:
    phone_number(const std::string& text);
    std::string area_code() const;
    std::string number() const;
    explicit operator std::string() const;
};
}
```

`number()` returns the cleaned ten digits, `area_code()` returns the first
three digits, and the explicit string conversion returns `(NXX) NXX-XXXX`.
Only `phone_number.h` and `phone_number.cpp` are editable. The build uses
C++17 with `-Wall -Wextra -Wpedantic -Werror`. Do not modify or attempt to
inspect the hidden verifier.

## Executed failure evidence

Observed evaluation failure: a private data member named `number` collided with the public `number()` member function, so the header did not compile.

####

Use the above instructions to modify the supplied files: phone_number.h phone_number.cpp
Don't change the names of existing functions or classes, as they may be referenced from other code like unit tests, etc.
Only use standard libraries, don't suggest installing any packages.

To suggest changes to a file you MUST return the entire content of the updated file.
You MUST use this *file listing* format:

path/to/filename.js
```
// entire file content ...
// ... goes in between
```

Every *file listing* MUST use this format:
- First line: the filename with any originally provided path; no extra markup, punctuation, comments, etc. **JUST** the filename with path.
- Second line: opening ```
- ... entire content of the file ...
- Final line: closing ```

To suggest changes to a file you MUST return a *file listing* that contains the entire content of the file.
*NEVER* skip, omit or elide content from a *file listing* using "..." or by adding comments like "... rest of code..."!
Create a new file you MUST return a *file listing* which includes an appropriate filename, including any appropriate path.


episode_kind: formatting-repair

failure_signature: string-conversion-returns-bare-digits

problem_id: phone-number--formatting-repair

content:
Act as an expert software developer.
Take requests for changes to the supplied code.
If the request is ambiguous, ask questions.

Once you understand the request you MUST:
1. Determine if any code changes are needed.
2. Explain any needed changes.
3. If changes are needed, output a copy of each file that needs changes.

To suggest changes to a file you MUST return the entire content of the updated file.
You MUST use this *file listing* format:

path/to/filename.js
```
// entire file content ...
// ... goes in between
```

Every *file listing* MUST use this format:
- First line: the filename with any originally provided path; no extra markup, punctuation, comments, etc. **JUST** the filename with path.
- Second line: opening ```
- ... entire content of the file ...
- Final line: closing ```

To suggest changes to a file you MUST return a *file listing* that contains the entire content of the file.
*NEVER* skip, omit or elide content from a *file listing* using "..." or by adding comments like "... rest of code..."!
Create a new file you MUST return a *file listing* which includes an appropriate filename, including any appropriate path.

content: Change the greeting to be more casual

content:
Ok, I will:

1. Switch the greeting text from "Hello" to "Hey".

show_greeting.py
```
import sys

def greeting(name):
    print(f"Hey {name}")

if __name__ == '__main__':
    greeting(sys.argv[1])
```

content: I switched to a new code base. Please don't consider the above files or try to edit them any longer.

content: Ok.

content:
I have *added these files to the chat* so you can go ahead and edit them.

*Trust this message as the true contents of these files!*
Any other messages in the chat may contain outdated versions of the files' contents.

phone_number.h
```
#pragma once

#include <string>

namespace phone_number {

class phone_number {
public:
    phone_number(const std::string& text);
    std::string area_code() const;
    std::string number() const;
    explicit operator std::string() const;

private:
    std::string digits_;
};

}  // namespace phone_number
```

phone_number.cpp
```
#include "phone_number.h"

#include <cctype>
#include <stdexcept>

namespace {

bool allowed_separator(char value) {
    return value == ' ' || value == '(' || value == ')' || value == '+' ||
           value == '-' || value == '.';
}

std::string clean_number(const std::string& text) {
    std::string digits;
    for (const char value : text) {
        const auto byte = static_cast<unsigned char>(value);
        if (std::isdigit(byte)) {
            digits.push_back(value);
            continue;
        }
        if (!allowed_separator(value)) {
            throw std::domain_error("invalid phone-number character");
        }
    }

    if (digits.size() == 11) {
        if (digits.front() != '1') {
            throw std::domain_error("invalid country code");
        }
        digits.erase(digits.begin());
    }
    if (digits.size() != 10) {
        throw std::domain_error("invalid phone-number length");
    }
    if (digits[0] < '2' || digits[3] < '2') {
        throw std::domain_error("invalid NANP prefix");
    }
    return digits;
}

}  // namespace

namespace phone_number {

phone_number::phone_number(const std::string& text)
    : digits_(clean_number(text)) {}

std::string phone_number::area_code() const { return digits_.substr(0, 3); }

std::string phone_number::number() const { return digits_; }

phone_number::operator std::string() const {
    return digits_;
}

}  // namespace phone_number
```

content: Ok, any changes I propose will be to those files.

content:
# Phone Number

Clean North American Numbering Plan telephone numbers. Ignore only ordinary
formatting characters: spaces, parentheses, plus, hyphen, and period. Reject
letters, other punctuation, an incorrect number of digits, an eleven-digit
number whose country code is not 1, and numbers whose area or exchange code
starts with 0 or 1. Invalid input throws `std::domain_error`.

The public C++17 interface is exact:

```cpp
namespace phone_number {
class phone_number {
public:
    phone_number(const std::string& text);
    std::string area_code() const;
    std::string number() const;
    explicit operator std::string() const;
};
}
```

`number()` returns the cleaned ten digits, `area_code()` returns the first
three digits, and the explicit string conversion returns `(NXX) NXX-XXXX`.
Only `phone_number.h` and `phone_number.cpp` are editable. The build uses
C++17 with `-Wall -Wextra -Wpedantic -Werror`. Do not modify or attempt to
inspect the hidden verifier.

## Executed failure evidence

The explicit string conversion must return the exact `(NXX) NXX-XXXX` format.

####

Use the above instructions to modify the supplied files: phone_number.h phone_number.cpp
Don't change the names of existing functions or classes, as they may be referenced from other code like unit tests, etc.
Only use standard libraries, don't suggest installing any packages.

To suggest changes to a file you MUST return the entire content of the updated file.
You MUST use this *file listing* format:

path/to/filename.js
```
// entire file content ...
// ... goes in between
```

Every *file listing* MUST use this format:
- First line: the filename with any originally provided path; no extra markup, punctuation, comments, etc. **JUST** the filename with path.
- Second line: opening ```
- ... entire content of the file ...
- Final line: closing ```

To suggest changes to a file you MUST return a *file listing* that contains the entire content of the file.
*NEVER* skip, omit or elide content from a *file listing* using "..." or by adding comments like "... rest of code..."!
Create a new file you MUST return a *file listing* which includes an appropriate filename, including any appropriate path.


episode_kind: full-solve

failure_signature: missing-public-api

problem_id: phone-number--full-solve

content:
Act as an expert software developer.
Take requests for changes to the supplied code.
If the request is ambiguous, ask questions.

Once you understand the request you MUST:
1. Determine if any code changes are needed.
2. Explain any needed changes.
3. If changes are needed, output a copy of each file that needs changes.

To suggest changes to a file you MUST return the entire content of the updated file.
You MUST use this *file listing* format:

path/to/filename.js
```
// entire file content ...
// ... goes in between
```

Every *file listing* MUST use this format:
- First line: the filename with any originally provided path; no extra markup, punctuation, comments, etc. **JUST** the filename with path.
- Second line: opening ```
- ... entire content of the file ...
- Final line: closing ```

To suggest changes to a file you MUST return a *file listing* that contains the entire content of the file.
*NEVER* skip, omit or elide content from a *file listing* using "..." or by adding comments like "... rest of code..."!
Create a new file you MUST return a *file listing* which includes an appropriate filename, including any appropriate path.

content: Change the greeting to be more casual

content:
Ok, I will:

1. Switch the greeting text from "Hello" to "Hey".

show_greeting.py
```
import sys

def greeting(name):
    print(f"Hey {name}")

if __name__ == '__main__':
    greeting(sys.argv[1])
```

content: I switched to a new code base. Please don't consider the above files or try to edit them any longer.

content: Ok.

content:
I have *added these files to the chat* so you can go ahead and edit them.

*Trust this message as the true contents of these files!*
Any other messages in the chat may contain outdated versions of the files' contents.

phone_number.h
```
#pragma once

namespace phone_number {
}
```

phone_number.cpp
```
#include "phone_number.h"

namespace phone_number {
}
```

content: Ok, any changes I propose will be to those files.

content:
# Phone Number

Clean North American Numbering Plan telephone numbers. Ignore only ordinary
formatting characters: spaces, parentheses, plus, hyphen, and period. Reject
letters, other punctuation, an incorrect number of digits, an eleven-digit
number whose country code is not 1, and numbers whose area or exchange code
starts with 0 or 1. Invalid input throws `std::domain_error`.

The public C++17 interface is exact:

```cpp
namespace phone_number {
class phone_number {
public:
    phone_number(const std::string& text);
    std::string area_code() const;
    std::string number() const;
    explicit operator std::string() const;
};
}
```

`number()` returns the cleaned ten digits, `area_code()` returns the first
three digits, and the explicit string conversion returns `(NXX) NXX-XXXX`.
Only `phone_number.h` and `phone_number.cpp` are editable. The build uses
C++17 with `-Wall -Wextra -Wpedantic -Werror`. Do not modify or attempt to
inspect the hidden verifier.

####

Use the above instructions to modify the supplied files: phone_number.h phone_number.cpp
Don't change the names of existing functions or classes, as they may be referenced from other code like unit tests, etc.
Only use standard libraries, don't suggest installing any packages.

To suggest changes to a file you MUST return the entire content of the updated file.
You MUST use this *file listing* format:

path/to/filename.js
```
// entire file content ...
// ... goes in between
```

Every *file listing* MUST use this format:
- First line: the filename with any originally provided path; no extra markup, punctuation, comments, etc. **JUST** the filename with path.
- Second line: opening ```
- ... entire content of the file ...
- Final line: closing ```

To suggest changes to a file you MUST return a *file listing* that contains the entire content of the file.
*NEVER* skip, omit or elide content from a *file listing* using "..." or by adding comments like "... rest of code..."!
Create a new file you MUST return a *file listing* which includes an appropriate filename, including any appropriate path.


episode_kind: length-partition-repair

failure_signature: overlong-input-silently-truncated

problem_id: phone-number--length-partition-repair

content:
Act as an expert software developer.
Take requests for changes to the supplied code.
If the request is ambiguous, ask questions.

Once you understand the request you MUST:
1. Determine if any code changes are needed.
2. Explain any needed changes.
3. If changes are needed, output a copy of each file that needs changes.

To suggest changes to a file you MUST return the entire content of the updated file.
You MUST use this *file listing* format:

path/to/filename.js
```
// entire file content ...
// ... goes in between
```

Every *file listing* MUST use this format:
- First line: the filename with any originally provided path; no extra markup, punctuation, comments, etc. **JUST** the filename with path.
- Second line: opening ```
- ... entire content of the file ...
- Final line: closing ```

To suggest changes to a file you MUST return a *file listing* that contains the entire content of the file.
*NEVER* skip, omit or elide content from a *file listing* using "..." or by adding comments like "... rest of code..."!
Create a new file you MUST return a *file listing* which includes an appropriate filename, including any appropriate path.

content: Change the greeting to be more casual

content:
Ok, I will:

1. Switch the greeting text from "Hello" to "Hey".

show_greeting.py
```
import sys

def greeting(name):
    print(f"Hey {name}")

if __name__ == '__main__':
    greeting(sys.argv[1])
```

content: I switched to a new code base. Please don't consider the above files or try to edit them any longer.

content: Ok.

content:
I have *added these files to the chat* so you can go ahead and edit them.

*Trust this message as the true contents of these files!*
Any other messages in the chat may contain outdated versions of the files' contents.

phone_number.h
```
#pragma once

#include <string>

namespace phone_number {

class phone_number {
public:
    phone_number(const std::string& text);
    std::string area_code() const;
    std::string number() const;
    explicit operator std::string() const;

private:
    std::string digits_;
};

}  // namespace phone_number
```

phone_number.cpp
```
#include "phone_number.h"

#include <cctype>
#include <stdexcept>

namespace {

bool allowed_separator(char value) {
    return value == ' ' || value == '(' || value == ')' || value == '+' ||
           value == '-' || value == '.';
}

std::string clean_number(const std::string& text) {
    std::string digits;
    for (const char value : text) {
        const auto byte = static_cast<unsigned char>(value);
        if (std::isdigit(byte)) {
            digits.push_back(value);
            continue;
        }
        if (!allowed_separator(value)) {
            throw std::domain_error("invalid phone-number character");
        }
    }

    if (digits.size() < 10) {
        throw std::domain_error("invalid phone-number length");
    }
    if (digits.size() > 10) {
        digits = digits.substr(digits.size() - 10);
    }
    if (digits[0] < '2' || digits[3] < '2') {
        throw std::domain_error("invalid NANP prefix");
    }
    return digits;
}

}  // namespace

namespace phone_number {

phone_number::phone_number(const std::string& text)
    : digits_(clean_number(text)) {}

std::string phone_number::area_code() const { return digits_.substr(0, 3); }

std::string phone_number::number() const { return digits_; }

phone_number::operator std::string() const {
    return "(" + digits_.substr(0, 3) + ") " + digits_.substr(3, 3) +
           "-" + digits_.substr(6, 4);
}

}  // namespace phone_number
```

content: Ok, any changes I propose will be to those files.

content:
# Phone Number

Clean North American Numbering Plan telephone numbers. Ignore only ordinary
formatting characters: spaces, parentheses, plus, hyphen, and period. Reject
letters, other punctuation, an incorrect number of digits, an eleven-digit
number whose country code is not 1, and numbers whose area or exchange code
starts with 0 or 1. Invalid input throws `std::domain_error`.

The public C++17 interface is exact:

```cpp
namespace phone_number {
class phone_number {
public:
    phone_number(const std::string& text);
    std::string area_code() const;
    std::string number() const;
    explicit operator std::string() const;
};
}
```

`number()` returns the cleaned ten digits, `area_code()` returns the first
three digits, and the explicit string conversion returns `(NXX) NXX-XXXX`.
Only `phone_number.h` and `phone_number.cpp` are editable. The build uses
C++17 with `-Wall -Wextra -Wpedantic -Werror`. Do not modify or attempt to
inspect the hidden verifier.

## Executed failure evidence

Only ten digits, or eleven digits beginning with country code 1, are valid.

####

Use the above instructions to modify the supplied files: phone_number.h phone_number.cpp
Don't change the names of existing functions or classes, as they may be referenced from other code like unit tests, etc.
Only use standard libraries, don't suggest installing any packages.

To suggest changes to a file you MUST return the entire content of the updated file.
You MUST use this *file listing* format:

path/to/filename.js
```
// entire file content ...
// ... goes in between
```

Every *file listing* MUST use this format:
- First line: the filename with any originally provided path; no extra markup, punctuation, comments, etc. **JUST** the filename with path.
- Second line: opening ```
- ... entire content of the file ...
- Final line: closing ```

To suggest changes to a file you MUST return a *file listing* that contains the entire content of the file.
*NEVER* skip, omit or elide content from a *file listing* using "..." or by adding comments like "... rest of code..."!
Create a new file you MUST return a *file listing* which includes an appropriate filename, including any appropriate path.


episode_kind: missing-definitions-repair

failure_signature: declared-members-not-defined

content:
Act as an expert software developer.
Take requests for changes to the supplied code.
If the request is ambiguous, ask questions.

Once you understand the request you MUST:
1. Determine if any code changes are needed.
2. Explain any needed changes.
3. If changes are needed, output a copy of each file that needs changes.

To suggest changes to a file you MUST return the entire content of the updated file.
You MUST use this *file listing* format:

path/to/filename.js
```
// entire file content ...
// ... goes in between
```

Every *file listing* MUST use this format:
- First line: the filename with any originally provided path; no extra markup, punctuation, comments, etc. **JUST** the filename with path.
- Second line: opening ```
- ... entire content of the file ...
- Final line: closing ```

To suggest changes to a file you MUST return a *file listing* that contains the entire content of the file.
*NEVER* skip, omit or elide content from a *file listing* using "..." or by adding comments like "... rest of code..."!
Create a new file you MUST return a *file listing* which includes an appropriate filename, including any appropriate path.

content: Change the greeting to be more casual

content:
Ok, I will:

1. Switch the greeting text from "Hello" to "Hey".

show_greeting.py
```
import sys

def greeting(name):
    print(f"Hey {name}")

if __name__ == '__main__':
    greeting(sys.argv[1])
```

content: I switched to a new code base. Please don't consider the above files or try to edit them any longer.

content: Ok.

content:
I have *added these files to the chat* so you can go ahead and edit them.

*Trust this message as the true contents of these files!*
Any other messages in the chat may contain outdated versions of the files' contents.

phone_number.h
```
#pragma once

#include <string>

namespace phone_number {

class phone_number {
public:
    phone_number(const std::string& text);
    std::string area_code() const;
    std::string number() const;
    explicit operator std::string() const;

private:
    std::string digits_;
};

}  // namespace phone_number
```

phone_number.cpp
```
#include "phone_number.h"

namespace phone_number {
}
```

content: Ok, any changes I propose will be to those files.

content:
# Phone Number

Clean North American Numbering Plan telephone numbers. Ignore only ordinary
formatting characters: spaces, parentheses, plus, hyphen, and period. Reject
letters, other punctuation, an incorrect number of digits, an eleven-digit
number whose country code is not 1, and numbers whose area or exchange code
starts with 0 or 1. Invalid input throws `std::domain_error`.

The public C++17 interface is exact:

```cpp
namespace phone_number {
class phone_number {
public:
    phone_number(const std::string& text);
    std::string area_code() const;
    std::string number() const;
    explicit operator std::string() const;
};
}
```

`number()` returns the cleaned ten digits, `area_code()` returns the first
three digits, and the explicit string conversion returns `(NXX) NXX-XXXX`.
Only `phone_number.h` and `phone_number.cpp` are editable. The build uses
C++17 with `-Wall -Wextra -Wpedantic -Werror`. Do not modify or attempt to
inspect the hidden verifier.

## Executed failure evidence

The linker reports unresolved Phone Number constructor and observer definitions.

####

Use the above instructions to modify the supplied files: phone_number.h phone_number.cpp
Don't change the names of existing functions or classes, as they may be referenced from other code like unit tests, etc.
Only use standard libraries, don't suggest installing any packages.

To suggest changes to a file you MUST return the entire content of the updated file.
You MUST use this *file listing* format:

path/to/filename.js
```
// entire file content ...
// ... goes in between
```

Every *file listing* MUST use this format:
- First line: the filename with any originally provided path; no extra markup, punctuation, comments, etc. **JUST** the filename with path.
- Second line: opening ```
- ... entire content of the file ...
- Final line: closing ```

To suggest changes to a file you MUST return a *file listing* that contains the entire content of the file.
*NEVER* skip, omit or elide content from a *file listing* using "..." or by adding comments like "... rest of code..."!
Create a new file you MUST return a *file listing* which includes an appropriate filename, including any appropriate path.


episode_kind: nanp-prefix-repair

problem_id: phone-number--nanp-prefix-repair

content:
Act as an expert software developer.
Take requests for changes to the supplied code.
If the request is ambiguous, ask questions.

Once you understand the request you MUST:
1. Determine if any code changes are needed.
2. Explain any needed changes.
3. If changes are needed, output a copy of each file that needs changes.

To suggest changes to a file you MUST return the entire content of the updated file.
You MUST use this *file listing* format:

path/to/filename.js
```
// entire file content ...
// ... goes in between
```

Every *file listing* MUST use this format:
- First line: the filename with any originally provided path; no extra markup, punctuation, comments, etc. **JUST** the filename with path.
- Second line: opening ```
- ... entire content of the file ...
- Final line: closing ```

To suggest changes to a file you MUST return a *file listing* that contains the entire content of the file.
*NEVER* skip, omit or elide content from a *file listing* using "..." or by adding comments like "... rest of code..."!
Create a new file you MUST return a *file listing* which includes an appropriate filename, including any appropriate path.

content: Change the greeting to be more casual

content:
Ok, I will:

1. Switch the greeting text from "Hello" to "Hey".

show_greeting.py
```
import sys

def greeting(name):
    print(f"Hey {name}")

if __name__ == '__main__':
    greeting(sys.argv[1])
```

content: I switched to a new code base. Please don't consider the above files or try to edit them any longer.

content: Ok.

content:
I have *added these files to the chat* so you can go ahead and edit them.

*Trust this message as the true contents of these files!*
Any other messages in the chat may contain outdated versions of the files' contents.

phone_number.h
```
#pragma once

#include <string>

namespace phone_number {

class phone_number {
public:
    phone_number(const std::string& text);
    std::string area_code() const;
    std::string number() const;
    explicit operator std::string() const;

private:
    std::string digits_;
};

}  // namespace phone_number
```

phone_number.cpp
```
#include "phone_number.h"

#include <cctype>
#include <stdexcept>

namespace {

bool allowed_separator(char value) {
    return value == ' ' || value == '(' || value == ')' || value == '+' ||
           value == '-' || value == '.';
}

std::string clean_number(const std::string& text) {
    std::string digits;
    for (const char value : text) {
        const auto byte = static_cast<unsigned char>(value);
        if (std::isdigit(byte)) {
            digits.push_back(value);
            continue;
        }
        if (!allowed_separator(value)) {
            throw std::domain_error("invalid phone-number character");
        }
    }

    if (digits.size() == 11) {
        if (digits.front() != '1') {
            throw std::domain_error("invalid country code");
        }
        digits.erase(digits.begin());
    }
    if (digits.size() != 10) {
        throw std::domain_error("invalid phone-number length");
    }
    return digits;
}

}  // namespace

namespace phone_number {

phone_number::phone_number(const std::string& text)
    : digits_(clean_number(text)) {}

std::string phone_number::area_code() const { return digits_.substr(0, 3); }

std::string phone_number::number() const { return digits_; }

phone_number::operator std::string() const {
    return "(" + digits_.substr(0, 3) + ") " + digits_.substr(3, 3) +
           "-" + digits_.substr(6, 4);
}

}  // namespace phone_number
```

content: Ok, any changes I propose will be to those files.

content:
# Phone Number

Clean North American Numbering Plan telephone numbers. Ignore only ordinary
formatting characters: spaces, parentheses, plus, hyphen, and period. Reject
letters, other punctuation, an incorrect number of digits, an eleven-digit
number whose country code is not 1, and numbers whose area or exchange code
starts with 0 or 1. Invalid input throws `std::domain_error`.

The public C++17 interface is exact:

```cpp
namespace phone_number {
class phone_number {
public:
    phone_number(const std::string& text);
    std::string area_code() const;
    std::string number() const;
    explicit operator std::string() const;
};
}
```

`number()` returns the cleaned ten digits, `area_code()` returns the first
three digits, and the explicit string conversion returns `(NXX) NXX-XXXX`.
Only `phone_number.h` and `phone_number.cpp` are editable. The build uses
C++17 with `-Wall -Wextra -Wpedantic -Werror`. Do not modify or attempt to
inspect the hidden verifier.

## Executed failure evidence

Area and exchange codes beginning with 0 or 1 must throw std::domain_error.

####

Use the above instructions to modify the supplied files: phone_number.h phone_number.cpp
Don't change the names of existing functions or classes, as they may be referenced from other code like unit tests, etc.
Only use standard libraries, don't suggest installing any packages.

To suggest changes to a file you MUST return the entire content of the updated file.
You MUST use this *file listing* format:

path/to/filename.js
```
// entire file content ...
// ... goes in between
```

Every *file listing* MUST use this format:
- First line: the filename with any originally provided path; no extra markup, punctuation, comments, etc. **JUST** the filename with path.
- Second line: opening ```
- ... entire content of the file ...
- Final line: closing ```

To suggest changes to a file you MUST return a *file listing* that contains the entire content of the file.
*NEVER* skip, omit or elide content from a *file listing* using "..." or by adding comments like "... rest of code..."!
Create a new file you MUST return a *file listing* which includes an appropriate filename, including any appropriate path.