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| author | Adrian Thurston <thurston@colm.net> | 2019-11-30 09:01:25 -0800 |
|---|---|---|
| committer | Adrian Thurston <thurston@colm.net> | 2019-11-30 09:01:25 -0800 |
| commit | dac2c1d90de23ca6cb3db88992885b116199a848 (patch) | |
| tree | 2b28f89cb728ab60ba7557dacd875b68679c26e5 /grammar | |
| parent | 26698c0cf88015653e2503d0ab5e44f63f77e6fe (diff) | |
| download | colm-dac2c1d90de23ca6cb3db88992885b116199a848.tar.gz | |
rust grammar: handle floats specified with just a trailing dot
let a = 0. + 1.- 2.3;
Diffstat (limited to 'grammar')
| -rw-r--r-- | grammar/rust.lm | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/grammar/rust.lm b/grammar/rust.lm index ad6d25d8..b5cc7bb6 100644 --- a/grammar/rust.lm +++ b/grammar/rust.lm @@ -37,7 +37,14 @@ lex rl float_suffix / ( 'f32' | 'f64' )? / - # Not implemented: DEC_LITERAL . (not immediately followed by ., _ or an identifier) + # Handles: DEC_LITERAL . (not immediately followed by ., _ or an identifier) + token hanging_float + / [0-9]+ '.' [^0-9._a-zA-Z] / + { + Float: str = input->pull( match_length - 1 ) + input->push( make_token( typeid<float>, Float ) ) + } + token float/ [0-9]+ float_exponent | [0-9]+ '.' [0-9]+ float_exponent? | |