#lang racket/base (require rackunit parser-tools/lex br/ragg/rules/parser br/ragg/rules/lexer br/ragg/rules/rule-structs) ;; quick-and-dirty helper for pos construction. (define (p x) (pos x #f #f)) ;; FIXME: fix the test cases so they work on locations rather than just offsets. (check-equal? (grammar-parser (tokenize (open-input-string "expr : 'hello'"))) (list (rule (p 1) (p 15) (lhs-id (p 1) (p 5) "expr" ) (pattern-lit (p 8) (p 15) "hello")))) (check-equal? (grammar-parser (tokenize (open-input-string "expr : COLON"))) (list (rule (p 1) (p 13) (lhs-id (p 1) (p 5) "expr") (pattern-token (p 8) (p 13) "COLON")))) (check-equal? (grammar-parser (tokenize (open-input-string "expr : COLON COLON"))) (list (rule (p 1) (p 19) (lhs-id (p 1) (p 5) "expr") (pattern-seq (p 8) (p 19) (list (pattern-token (p 8) (p 13) "COLON") (pattern-token (p 14) (p 19) "COLON")))))) (check-equal? (grammar-parser (tokenize (open-input-string "expr : 'hello'*"))) (list (rule (p 1) (p 16) (lhs-id (p 1) (p 5) "expr" ) (pattern-repeat (p 8) (p 16) 0 (pattern-lit (p 8) (p 15) "hello"))))) (check-equal? (grammar-parser (tokenize (open-input-string "expr : 'hello'+"))) (list (rule (p 1) (p 16) (lhs-id (p 1) (p 5) "expr" ) (pattern-repeat (p 8) (p 16) 1 (pattern-lit (p 8) (p 15) "hello"))))) (check-equal? (grammar-parser (tokenize (open-input-string "expr : ['hello']"))) (list (rule (p 1) (p 17) (lhs-id (p 1) (p 5) "expr" ) (pattern-maybe (p 8) (p 17) (pattern-lit (p 9) (p 16) "hello"))))) (check-equal? (grammar-parser (tokenize (open-input-string "expr : COLON | BLAH"))) (list (rule (p 1) (p 20) (lhs-id (p 1) (p 5) "expr") (pattern-choice (p 8) (p 20) (list (pattern-token (p 8) (p 13) "COLON") (pattern-token (p 16) (p 20) "BLAH")))))) (check-equal? (grammar-parser (tokenize (open-input-string "expr : COLON | BLAH | BAZ expr"))) (list (rule (p 1) (p 31) (lhs-id (p 1) (p 5) "expr") (pattern-choice (p 8) (p 31) (list (pattern-token (p 8) (p 13) "COLON") (pattern-token (p 16) (p 20) "BLAH") (pattern-seq (p 23) (p 31) (list (pattern-token (p 23) (p 26) "BAZ") (pattern-id (p 27) (p 31) "expr")))))))) (check-equal? (grammar-parser (tokenize (open-input-string "expr : one two three"))) (list (rule (p 1) (p 21) (lhs-id (p 1) (p 5) "expr") (pattern-seq (p 8) (p 21) (list (pattern-id (p 8) (p 11) "one") (pattern-id (p 12) (p 15) "two") (pattern-id (p 16) (p 21) "three")))))) (check-equal? (grammar-parser (tokenize (open-input-string "expr : (one two three)"))) (list (rule (p 1) (p 23) (lhs-id (p 1) (p 5) "expr") (pattern-seq (p 8) (p 23) (list (pattern-id (p 9) (p 12) "one") (pattern-id (p 13) (p 16) "two") (pattern-id (p 17) (p 22) "three")))))) (check-equal? (grammar-parser (tokenize (open-input-string "expr : one two* three"))) (list (rule (p 1) (p 22) (lhs-id (p 1) (p 5) "expr") (pattern-seq (p 8) (p 22) (list (pattern-id (p 8) (p 11) "one") (pattern-repeat (p 12) (p 16) 0 (pattern-id (p 12) (p 15) "two")) (pattern-id (p 17) (p 22) "three")))))) (check-equal? (grammar-parser (tokenize (open-input-string "expr : one two+ three"))) (list (rule (p 1) (p 22) (lhs-id (p 1) (p 5) "expr") (pattern-seq (p 8) (p 22) (list (pattern-id (p 8) (p 11) "one") (pattern-repeat (p 12) (p 16) 1 (pattern-id (p 12) (p 15) "two")) (pattern-id (p 17) (p 22) "three")))))) (check-equal? (grammar-parser (tokenize (open-input-string "expr : (one two)+ three"))) (list (rule (p 1) (p 24) (lhs-id (p 1) (p 5) "expr") (pattern-seq (p 8) (p 24) (list (pattern-repeat (p 8) (p 18) 1 (pattern-seq (p 8) (p 17) (list (pattern-id (p 9) (p 12) "one") (pattern-id (p 13) (p 16) "two")))) (pattern-id (p 19) (p 24) "three")))))) (check-equal? (grammar-parser (tokenize (open-input-string #<