diff options
Diffstat (limited to 'index.md')
| -rw-r--r-- | index.md | 71 |
1 files changed, 4 insertions, 67 deletions
@@ -6,73 +6,6 @@ Crowbar is a language that is derived from (and, wherever possible, interoperabl Ideally, a typical C codebase should be straightforward to rewrite in Crowbar, and any atypical C constructions not supported by Crowbar can be left as C.
-# Removals
-
-Some of the footguns and complexity in C come from misfeatures that can simply not be used.
-
-## Footguns
-
-### Almost Always The Wrong Thing
-
-- `goto`
-- Octal literals
-- Hexadecimal float literals
-- Wide characters
-- Digraphs
-- Prefix `++` and `--`
-- Chaining mixed left and right shifts (e.g. `x << 3 >> 2`)
-- Chaining relational/equality operators (e.g. `3 < x == 2`)
-- Mixed chains of bitwise or logical operators (e.g. `2 & x && 4 ^ y`)
-- The comma operator `,`
-
-### Explicit Beats Implicit
-
-- `typedef`
-- Octal escape sequences
-- Using an assignment operator (`=`, `+=`, etc) or (postfix) `++` and `--` as components in a larger expression
-- The conditional operator `?:`
-- Preprocessor macros (but constants are fine)
-
-## Needless Complexity
-
-### Let The Compiler Decide
-
-- `inline`
-- `register`
-
-### Who Even Cares
-
-- `restrict`
-- `volatile`
-- `_Imaginary`
-
-# Adjustments
-
-Some C features are footguns by default, so Crowbar ensures that they are only used correctly.
-
-- Unions are not robust by default.
- Crowbar only supports unions when they are [tagged unions](tagged-unions.md).
-
-C's syntax isn't perfect, but it's usually pretty good.
-However, sometimes it just sucks, and in those cases Crowbar makes changes.
-
-- C's variable declaration syntax is far from intuitive in nontrivial cases (function pointers, pointer-to-`const` vs `const`-pointer, etc).
- Crowbar uses [simplified type syntax](types.md) to keep types and variable names distinct.
-- `_Bool` is just `bool`, `_Complex` is just `complex` (why drag the preprocessor into it?)
-- Adding a `_` to numeric literals as a separator
-- All string literals, char literals, etc are UTF-8
-
-# Additions
-
-## Anti-Footguns
-
-- C is generous with memory in ways that are unreliable by default.
- Crowbar adds [memory safety guarantees](safety.md) to make correctness the default behavior.
-
-## Trivial Room For Improvement
-
-- Binary literals, prefixed with `0b`/`0B`
-
# Context
- [Rust is not a good C replacement](https://drewdevault.com/2019/03/25/Rust-is-not-a-good-C-replacement.html)
@@ -83,6 +16,10 @@ However, sometimes it just sucks, and in those cases Crowbar makes changes. - [Crowbar: Simplifying C's type names](https://www.boringcactus.com/2020/10/13/crowbar-2-simplifying-c-type-names.html)
- [Crowbar: Turns out, language development is hard](https://www.boringcactus.com/2020/10/19/crowbar-3-this-is-tough.html)
+# Comparison with C
+
+The [comparison with C](vs-c.md) is an informal overview of the places where Crowbar and C diverge.
+
# Syntax
[Read the Syntax chapter of the spec.](syntax.md)
|