1 files changed, 0 insertions, 30 deletions
diff --git a/src/urubu/grammar/semantic_error.go b/src/urubu/grammar/semantic_error.go
deleted file mode 100644
index 88a6b17..0000000
--- a/src/urubu/grammar/semantic_error.go
+++ /dev/null
@@ -1,30 +0,0 @@
-package grammar
-
-import "errors"
-
-var (
-	semErrNoGrammarName         = errors.New("name is missing")
-	semErrSpellingInconsistency = errors.New("the identifiers are treated as the same. please use the same spelling")
-	semErrDuplicateAssoc        = errors.New("associativity and precedence cannot be specified multiple times for a symbol")
-	semErrUndefinedPrec         = errors.New("symbol must has precedence")
-	semErrUndefinedOrdSym       = errors.New("undefined ordered symbol")
-	semErrUnusedProduction      = errors.New("unused production")
-	semErrUnusedTerminal        = errors.New("unused terminal")
-	semErrTermCannotBeSkipped   = errors.New("a terminal used in productions cannot be skipped")
-	semErrNoProduction          = errors.New("a grammar needs at least one production")
-	semErrUndefinedSym          = errors.New("undefined symbol")
-	semErrDuplicateProduction   = errors.New("duplicate production")
-	semErrDuplicateTerminal     = errors.New("duplicate terminal")
-	semErrDuplicateFragment     = errors.New("duplicate fragment")
-	semErrDuplicateName         = errors.New("duplicate names are not allowed between terminals and non-terminals")
-	semErrErrSymIsReserved      = errors.New("symbol 'error' is reserved as a terminal symbol")
-	semErrDuplicateLabel        = errors.New("a label must be unique in an alternative")
-	semErrInvalidLabel          = errors.New("a label must differ from terminal symbols or non-terminal symbols")
-	semErrDirInvalidName        = errors.New("invalid directive name")
-	semErrDirInvalidParam       = errors.New("invalid parameter")
-	semErrDuplicateDir          = errors.New("a directive must not be duplicated")
-	semErrDuplicateElem         = errors.New("duplicate element")
-	semErrAmbiguousElem         = errors.New("ambiguous element")
-	semErrInvalidProdDir        = errors.New("invalid production directive")
-	semErrInvalidAltDir         = errors.New("invalid alternative directive")
-)