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Diffstat (limited to 'README.md')
| -rw-r--r-- | README.md | 47 |
1 files changed, 46 insertions, 1 deletions
@@ -76,4 +76,49 @@ When `vartan parse` command successfully parses the input data, it prints a CST ## Debug -`vartan compile` command also generates a description file having `.desc` suffix along with a parsing table. This file describes each state in the parsing table in detail. If your grammar contains conflicts, see `Conflicts` section of this file. +`vartan compile` command also generates a description file having `-description.json` suffix along with a parsing table. This file describes each state in the parsing table in detail. If your grammar contains conflicts, see `Conflicts` and `States` sections of this file. Using `vartan show` command, you can see the description file in a readable format. + +```sh +$ vartan show expr-description.json +# Class + +LALR(1) + +# Conflicts + +No conflict was detected. + +# Terminals + + 1 - - <eof> + 2 - - error + 3 - - whitespaces + 4 - - number + 5 - - id + 6 - - add_op (+) + 7 - - mul_op (*) + +# Productions + + 1 - - expr' → expr + 2 - - expr → expr + term + 3 - - expr → term + 4 - - term → term * factor + 5 - - term → factor + 6 - - factor → number + 7 - - factor → id + +# States + +## State 0 + + 1 expr' → ・ expr + +shift 4 on number +shift 5 on id +goto 1 on expr +goto 2 on term +goto 3 on factor + +... +``` |