Jooris Hadeler
4f80de51b2
Introduces the fluxc Rust crate with the first two compiler stages: - token.rs: define_tokens! macro generates TokenKind enum and its Display impl from a single table covering all Flux tokens (literals, keywords, operators, punctuation, Eof/Unknown). Span (half-open u32 byte range) and Token<'src> (kind + span + zero-copy text slice) round out the module. - lexer.rs: Lexer<'src> produces Token<'src> from a source &str. Skips whitespace, // line comments, and /* */ block comments. Handles all integer bases (decimal, hex, octal, binary with _ separators), floats (fractional + exponent), string/char literals with escape sequences, and Unicode identifiers via unicode-xid. Implements Iterator<Item = Token> and includes 17 unit tests. Also adds .gitignore (ignores fluxc/target) and expands examples/fibonacci.flx with an iterative variant.
23 lines
367 B
Plaintext
23 lines
367 B
Plaintext
fn fibonacci_rec(n: u8) -> u64 {
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if n < 2 {
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return n;
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}
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return fibonacci_rec(n - 1) + fibonacci_rec(n - 2);
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}
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fn fibonacci_iter(n: u8) -> u64 {
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let mut counter = 0;
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let mut a = 0;
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let mut b = 1;
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while counter < n {
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let temp = a + b;
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a = b;
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b = temp;
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counter = counter + 1;
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}
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return a;
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} |