[WIP] Functionality for int_format_into for integer types

[madhav-madhusoodanan]

Context

1. Implementedl integer formatting into a fixed-size buffer without relying on fmt.
2. Added a NumBuffer type to help with this process.

Associated Issue

• Tracking Issue for integer formatting into a fixed-size buffer #138215

r? @hanna-kruppe

[rustbot]

Failed to set assignee to hanna-kruppe: invalid assignee

Note: Only org members with at least the repository "read" role, users with write permissions, or people who have commented on the PR may be assigned.

[madhav-madhusoodanan]

@rustbot author

[hanna-kruppe]

FYI, I'm going to unsubscribe from notifications here for now. As the bot said, I'm not a reviewer on this repository and you should pick someone else once the PR is ready for review. Although I can't approve any PR, I wouldn't mind also giving some input on this one, so feel free to @ me again at that point. But right now I'm getting a firehose of uninformative emails that makes it likely I'll miss the point where it would be useful for me to take a look.

[rust-log-analyzer]

The job mingw-check failed! Check out the build log: (web) (plain)

Click to see the possible cause of the failure (guessed by this bot)

---- library/core/src/num/int_format.rs - num::int_format::i128::format_into (line 261) stdout ----
error[E0599]: no associated item named `MINi128` found for type `i128` in the current scope
  --> library/core/src/num/int_format.rs:269:18
   |
11 | let n2 = i128 :: MINi128;
   |                  ^^^^^^^ associated item not found in `i128`

error[E0599]: no associated item named `MAXi128` found for type `i128` in the current scope
  --> library/core/src/num/int_format.rs:273:18
   |
15 | let n3 = i128 :: MAXi128;
   |                  ^^^^^^^ associated item not found in `i128`

---
---- library/core/src/num/int_format.rs - num::int_format::i16::format_into (line 261) stdout ----
error[E0599]: no associated item named `MINi16` found for type `i16` in the current scope
  --> library/core/src/num/int_format.rs:269:17
   |
11 | let n2 = i16 :: MINi16;
   |                 ^^^^^^ associated item not found in `i16`
   |
help: there is an associated constant `MIN` with a similar name
   |
11 - let n2 = i16 :: MINi16;
11 + let n2 = i16 :: MIN;
   |

error[E0599]: no associated item named `MAXi16` found for type `i16` in the current scope
  --> library/core/src/num/int_format.rs:273:17
   |
15 | let n3 = i16 :: MAXi16;
   |                 ^^^^^^ associated item not found in `i16`
   |
help: there is an associated constant `MAX` with a similar name
   |
15 - let n3 = i16 :: MAXi16;
15 + let n3 = i16 :: MAX;
   |

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0599`.
Couldn't compile the test.
---- library/core/src/num/int_format.rs - num::int_format::i32::format_into (line 261) stdout ----
error[E0599]: no associated item named `MINi32` found for type `i32` in the current scope
  --> library/core/src/num/int_format.rs:269:17
   |
11 | let n2 = i32 :: MINi32;
   |                 ^^^^^^ associated item not found in `i32`
   |
help: there is an associated constant `MIN` with a similar name
   |
11 - let n2 = i32 :: MINi32;
11 + let n2 = i32 :: MIN;
   |

error[E0599]: no associated item named `MAXi32` found for type `i32` in the current scope
  --> library/core/src/num/int_format.rs:273:17
   |
15 | let n3 = i32 :: MAXi32;
   |                 ^^^^^^ associated item not found in `i32`
   |
help: there is an associated constant `MAX` with a similar name
   |
15 - let n3 = i32 :: MAXi32;
15 + let n3 = i32 :: MAX;
   |

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0599`.
Couldn't compile the test.
---- library/core/src/num/int_format.rs - num::int_format::i64::format_into (line 261) stdout ----
error[E0599]: no associated item named `MINi64` found for type `i64` in the current scope
  --> library/core/src/num/int_format.rs:269:17
   |
11 | let n2 = i64 :: MINi64;
   |                 ^^^^^^ associated item not found in `i64`
   |
help: there is an associated constant `MIN` with a similar name
   |
11 - let n2 = i64 :: MINi64;
11 + let n2 = i64 :: MIN;
   |

error[E0599]: no associated item named `MAXi64` found for type `i64` in the current scope
  --> library/core/src/num/int_format.rs:273:17
   |
15 | let n3 = i64 :: MAXi64;
   |                 ^^^^^^ associated item not found in `i64`
   |
help: there is an associated constant `MAX` with a similar name
   |
15 - let n3 = i64 :: MAXi64;
15 + let n3 = i64 :: MAX;
   |

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0599`.
Couldn't compile the test.
---- library/core/src/num/int_format.rs - num::int_format::i8::format_into (line 261) stdout ----
error[E0599]: no associated item named `MINi8` found for type `i8` in the current scope
  --> library/core/src/num/int_format.rs:269:16
   |
11 | let n2 = i8 :: MINi8;
   |                ^^^^^ associated item not found in `i8`
   |
help: there is an associated constant `MIN` with a similar name
   |
11 - let n2 = i8 :: MINi8;
11 + let n2 = i8 :: MIN;
   |

error[E0599]: no associated item named `MAXi8` found for type `i8` in the current scope
  --> library/core/src/num/int_format.rs:273:16
   |
15 | let n3 = i8 :: MAXi8;
   |                ^^^^^ associated item not found in `i8`
   |
help: there is an associated constant `MAX` with a similar name
   |
15 - let n3 = i8 :: MAXi8;
15 + let n3 = i8 :: MAX;
   |

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0599`.
Couldn't compile the test.
---- library/core/src/num/int_format.rs - num::int_format::isize::format_into (line 261) stdout ----
error[E0599]: no associated item named `MINisize` found for type `isize` in the current scope
  --> library/core/src/num/int_format.rs:269:19
   |
11 | let n2 = isize :: MINisize;
   |                   ^^^^^^^^ associated item not found in `isize`

error[E0599]: no associated item named `MAXisize` found for type `isize` in the current scope
  --> library/core/src/num/int_format.rs:273:19
   |
15 | let n3 = isize :: MAXisize;
   |                   ^^^^^^^^ associated item not found in `isize`

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0599`.
Couldn't compile the test.
---- library/core/src/num/int_format.rs - num::int_format::u128::format_into (line 260) stdout ----
error[E0599]: no associated item named `MAXu128` found for type `u128` in the current scope
  --> library/core/src/num/int_format.rs:268:18
   |
11 | let n2 = u128 :: MAXu128;
   |                  ^^^^^^^ associated item not found in `u128`

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0599`.
Couldn't compile the test.
---- library/core/src/num/int_format.rs - num::int_format::u16::format_into (line 260) stdout ----
error[E0599]: no associated item named `MAXu16` found for type `u16` in the current scope
  --> library/core/src/num/int_format.rs:268:17
   |
11 | let n2 = u16 :: MAXu16;
   |                 ^^^^^^ associated item not found in `u16`
   |
help: there is an associated constant `MAX` with a similar name
   |
11 - let n2 = u16 :: MAXu16;
11 + let n2 = u16 :: MAX;
   |

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0599`.
Couldn't compile the test.
---- library/core/src/num/int_format.rs - num::int_format::u32::format_into (line 260) stdout ----
error[E0599]: no associated item named `MAXu32` found for type `u32` in the current scope
  --> library/core/src/num/int_format.rs:268:17
   |
11 | let n2 = u32 :: MAXu32;
   |                 ^^^^^^ associated item not found in `u32`
   |
help: there is an associated constant `MAX` with a similar name
   |
11 - let n2 = u32 :: MAXu32;
11 + let n2 = u32 :: MAX;
   |

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0599`.
Couldn't compile the test.
---- library/core/src/num/int_format.rs - num::int_format::u64::format_into (line 260) stdout ----
error[E0599]: no associated item named `MAXu64` found for type `u64` in the current scope
  --> library/core/src/num/int_format.rs:268:17
   |
11 | let n2 = u64 :: MAXu64;
   |                 ^^^^^^ associated item not found in `u64`
   |
help: there is an associated constant `MAX` with a similar name
   |
11 - let n2 = u64 :: MAXu64;
11 + let n2 = u64 :: MAX;
   |

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0599`.
Couldn't compile the test.
---- library/core/src/num/int_format.rs - num::int_format::u8::format_into (line 260) stdout ----
error[E0599]: no associated item named `MAXu8` found for type `u8` in the current scope
  --> library/core/src/num/int_format.rs:268:16
   |
11 | let n2 = u8 :: MAXu8;
   |                ^^^^^ associated item not found in `u8`
   |
help: there is an associated constant `MAX` with a similar name
   |
11 - let n2 = u8 :: MAXu8;
11 + let n2 = u8 :: MAX;
   |

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0599`.
Couldn't compile the test.
---- library/core/src/num/int_format.rs - num::int_format::usize::format_into (line 260) stdout ----
error[E0599]: no associated item named `MAXusize` found for type `usize` in the current scope
  --> library/core/src/num/int_format.rs:268:19
   |
11 | let n2 = usize :: MAXusize;
   |                   ^^^^^^^^ associated item not found in `usize`

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0599`.