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Diffstat (limited to 'src/modules/parser/driver.scm')
-rw-r--r-- | src/modules/parser/driver.scm | 35 |
1 files changed, 0 insertions, 35 deletions
diff --git a/src/modules/parser/driver.scm b/src/modules/parser/driver.scm deleted file mode 100644 index e464a7a..0000000 --- a/src/modules/parser/driver.scm +++ /dev/null @@ -1,35 +0,0 @@ -(define-module (parser driver) - #:use-module (ice-9 match) - #:export (tokens->ast)) - - -(define (die) - (error "syntax error")) - -(define (tokens->ast tokens) - (match tokens - ((func ...) - (list 'prog (function func))) - (_ (die)))) - -(define (function tokens) - (match tokens - (('int (? string? id) 'left-paren 'void 'right-paren 'open-brace stmt ... 'close-brace) - (list 'func id (statement stmt))) - (_ (die)))) - -(define (statement tokens) - (match tokens - (('return expr ... 'semi-colon) - (list 'stmt (expression expr))) - (_ (die)))) - -(define (expression tokens) - (match tokens - (((? integer? int)) - (list 'const int)) - (((or 'neg 'not) expr ...) - (list 'expr (car tokens) (expression expr))) - (('left-paren expr ... 'right-paren) - (expression expr)) - (_ (die)))) |