| //! Built-in test cases. |
| //! |
| //! The initial idea with this was to collect a broad set of tests that |
| //! exercise all of the grammar rules. However, that's a tall order as it |
| //! would end up being quite large. I instead started leaning on the |
| //! permutation-based tests to more exhaustively cover the grammar. However, |
| //! there's less certainty using that mechanism, and it also makes it harder |
| //! to iterate on a single grammar rule. This may still be useful, but would |
| //! take some considerable work to make it useful. |
| |
| macro_rules! cases { |
| ($($name:path => $($s:literal)+)+) => { |
| pub static LEX_CASES: &[(&str, &[&str])] = &[ |
| $( |
| (stringify!($name), &[ $($s),* ]), |
| )+ |
| ]; |
| }; |
| } |
| |
| cases! { |
| empty => |
| "" |
| |
| comment::line_comment => |
| "// line comment" |
| "////" |
| "//// this is a comment" |
| "//\n" |
| comment::block_comment => |
| "/* block comment */" |
| comment::inner_line_doc => |
| "//! inner line doc" |
| comment::inner_block_doc => |
| "/*! inner block doc */" |
| comment::outer_line_doc => |
| "/// outer line doc" |
| "///" |
| "///\n" |
| "///abc\n" |
| "/// ☃" |
| comment::outer_block_doc => |
| "/** outer block doc */" |
| comment::cr_starting_block_doc => |
| "/**\r CR starting block doc comment */" |
| comment::cr_starting_inner_block_doc => |
| "/*!\r CR starting inner block doc comment */" |
| |
| comment::block::nested_cr1 => |
| "/* /**\r*/ */" |
| comment::block::nested_cr2 => |
| "/* /*!\r*/ */" |
| comment::block::nested_cr3 => |
| "/* /** x\r y */ */" |
| comment::block::nested_cr4 => |
| "/** /*\r*/ */" |
| comment::block::nested_cr5 => |
| "/*! /*\r*/ */" |
| comment::block::nested_cr6 => |
| "/** /* x\r y */ */" |
| comment::block::nested_cr7 => |
| "/** /* /*\r*/ */ */" |
| comment::block::nested_cr8 => |
| "/* /* /**\r*/ */ */" |
| |
| reserved::pounds => |
| "##" |
| "###" |
| "####" |
| "#####" |
| |
| raw_identifier => |
| "r#fn" |
| char => |
| "'x'" |
| string => |
| "\"string\"" |
| string::continuation::bare_carriage => |
| "\"string\\\n\n\r\tcontinuation\"" |
| |
| raw_string => |
| "r\"raw string\"" |
| "r#\"raw string\"#" |
| "r#\"\"\"#" |
| byte => |
| "b'x'" |
| byte_string => |
| "b\"byte\"" |
| raw_byte_string => |
| "br\"raw byte\"" |
| "br#\"raw byte\"#" |
| c_string => |
| "c\"c str\"" |
| raw_c_string => |
| "cr\"raw c str\"" |
| "cr#\"raw c str\"#" |
| float => |
| "1.2" |
| integer => |
| "123" |
| lifetime => |
| "'a" |
| punctuation => |
| "!" |
| identifier => |
| "ident" |
| "fn" |
| |
| shebang::doc_comment => |
| "#! /** doc */ [attr]\n" |
| } |
