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| author | Pedro Souza <pedro@masba.net> | 2024-04-03 07:27:36 -0300 |
|---|---|---|
| committer | Pedro Souza <pedro@masba.net> | 2024-04-03 07:27:36 -0300 |
| commit | c5921aec313cefa8bd6e8f4c70f057c137133028 (patch) | |
| tree | d89973053a228b4d0973796e80a1063ec4999475 /bu-parser.h | |
| parent | 131dfc5e9f810b1c1e1fb1d75e781842ec601a65 (diff) | |
add parethesis support
Diffstat (limited to 'bu-parser.h')
| -rw-r--r-- | bu-parser.h | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/bu-parser.h b/bu-parser.h index 7dc7034..8910b5d 100644 --- a/bu-parser.h +++ b/bu-parser.h @@ -7,17 +7,10 @@ #include "tree.h" /* PRODUCTION RULES - - <expr> ::= <expr> <binary_op> <expr> | <unary_op> <expr> | <var> + <expr> ::= <expr> <binary_op> <expr> | <unary_op> <expr> | "(" <expr> ")" | <var> <binary_op> ::= "*" | "+" <unary_op> ::= "!" <var> ::= r#[a-z] - - */ - -/* POSSIBILITIES - a-z => var - */ enum parser_state { @@ -31,6 +24,8 @@ enum token_id { TOKEN_BINARY_OPERATOR, TOKEN_UNARY_OPERATOR, TOKEN_VARIABLE, + TOKEN_OPEN_PAREN, + TOKEN_CLOSE_PAREN, TOKEN_EOS, TOKEN_OOB, TOKEN_MAX, |