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| author | Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com> | 2023-08-03 15:28:40 +0200 |
|---|---|---|
| committer | Arthur Cohen <arthur.cohen@embecosm.com> | 2024-01-16 19:00:32 +0100 |
| commit | a7eacd8879e422485a0044be37d03a05d3ed262e (patch) | |
| tree | f9851883cd196f74e47f3f0f5954b45e35693f31 | |
| parent | cdddf7baff74af1542788868d1cfab6dc435f2ef (diff) | |
| download | gcc-a7eacd8879e422485a0044be37d03a05d3ed262e.zip gcc-a7eacd8879e422485a0044be37d03a05d3ed262e.tar.gz gcc-a7eacd8879e422485a0044be37d03a05d3ed262e.tar.bz2 | |
gccrs: fix lexer exponent output on tuple indices
The lexer did output a literal for values such as 42.e wich are invalid
in rust.
gcc/rust/ChangeLog:
* lex/rust-lex.cc (Lexer::parse_decimal_int_or_float): Only
accept digits after a dot instead of accepting any float
member.
Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>
| -rw-r--r-- | gcc/rust/lex/rust-lex.cc | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/gcc/rust/lex/rust-lex.cc b/gcc/rust/lex/rust-lex.cc index 53895c1..8142aa0 100644 --- a/gcc/rust/lex/rust-lex.cc +++ b/gcc/rust/lex/rust-lex.cc @@ -2295,7 +2295,17 @@ Lexer::parse_decimal_int_or_float (location_t loc) length += std::get<1> (initial_decimal); // detect float literal - if (current_char == '.' && is_float_digit (peek_input (1).value)) + // + // Note: + // + // We should not use is_float_digit () for this verification but instead + // directly ISDIGIT because rust does not support non digit values right after + // a dot. + // The following value is not legal in rust: + // let a = 3.e1; + // A `0` should be put between the dot and the exponent to be valid + // (eg. 3.0e1). + if (current_char == '.' && ISDIGIT (peek_input (1).value)) { // float with a '.', parse another decimal into it |