Basic floating point support (WIP) #18

j · 2024-09-19T19:26:02Z

j commented

2024-09-19 19:26:02 +00:00

Additions:

Float support in cl-lexer (though riddled with hacks)
Float support in the AST (smuggles floats inside u64, for now)
Float support in the tree-walk interpreter

Considerations:

Float 0.1 and Range 0..1 are ambiguous with only one token lookahead. It might be a better idea to push both int and float parsing into the parser, and disambiguate there?
Does not support the optional exponent form yet
Relies on Rust std for float parsing :(

Additions: - Float support in `cl-lexer` (though riddled with hacks) - Float support in the AST (smuggles floats inside u64, for now) - Float support in the tree-walk interpreter Considerations: - Float 0.1 and Range 0..1 are ambiguous with only one token lookahead. It might be a better idea to push both int and float parsing into the parser, and disambiguate there? - Does not support the optional exponent form yet - Relies on Rust std for float parsing :(

j added 9 commits 2024-09-19 19:26:03 +00:00

cl-parser: Fix precedence of comparison operators 0f8b0824ac

interpreter: Add float machinery fad28beb05

- operators
- type casting

sample-code: Add square root demo c62df3d8b3

cl-lexer: Add a hacky workaround for float support. 56e71d6782

It's disgusting, but better than nothing!

cl-ast: Add float support 5deb585054

- Smuggle floats as integers to maintain `eq`
- This is bad, but not terrible for spec-compliant floats. Might have issues with NaN.

cl_parser: Smuggle floats

cl_interpret: unpack smuggled floats in float literal node

cl-ast: always pretty-print decimal for floats 94be5d787f

cl-lexer: Hack around ambiguity between 1.0 and 1..0 f4fe07a08b

This requires more than one token lookahead, but is already part of a hack itself, so... /shrug

sample-code: update sqrt.cl to use new float syntax b9f4994930

repline: Add a code sample demonstrating the use of prebaked::read_and 96be5aba6c

j added the

enhancement

label 2024-09-19 19:26:36 +00:00

j merged commit ae11d87d68 into main

2024-09-19 19:27:51 +00:00

j referenced this issue from a commit

2024-09-19 19:27:53 +00:00

Merge pull request 'Basic floating point support (WIP)' (#18) from floats into main

j deleted branch floats

2024-09-19 19:28:10 +00:00

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Reference: j/Conlang#18