Improve C language features #240
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ChAoSUnItY
reviewed
Aug 11, 2025
| int cast_ptr_level = 0; | ||
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| /* Look ahead to see if we have a typename followed by ) */ | ||
| if (lex_peek(T_identifier, lookahead_token)) { |
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Not sure if this would be too much to be fit into this patch, but it would be good to also have macro parameter handled here, so later va_arg macro could be implemented.
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We can handle va_arg macro implementation in a follow-up PR.
- Binary literal support with 0b/0B prefix - Hexadecimal escape sequences (\xHH) - Octal escape sequences (\nnn) - Additional escape characters (\a, \b, \v, \f, \e, \?) - Adjacent string literal concatenation - Code formatted with clang-format-18
- sizeof expression support for variables and expressions - Union type support with proper memory layout - Compound literal support for basic types and arrays - Type casting support with explicit (type) syntax - Enhanced type system with union handling - Code formatted with clang-format-18
- Add OP_cast instruction for type conversions - Implement cast support in ARM backend - Implement cast support in RISC-V backend - Add cast handling in SSA and register allocation - Code formatted with clang-format-18
- Add explicit casts in libc for type clarity - Enhance ELF generation with proper type handling - Ensure consistent type usage throughout runtime - Code formatted with clang-format-18
- Tests for binary literals and edge cases - Tests for all escape sequences - Tests for sizeof expressions - Tests for type casting operations - Tests for compound literals - Tests for union types and operations
ChAoSUnItY
approved these changes
Aug 12, 2025
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The commits focus on type safety improvements, new C language features (unions, compound literals, sizeof), and enhanced string/literal support.
Summary by Bito
This pull request significantly enhances C language features by improving type safety, adding support for unions and compound literals, and enhancing the handling of literals and escape sequences. It introduces new casting operations and includes comprehensive tests to ensure robustness and correctness, making the language more expressive and safer.