1 files changed, 0 insertions, 36 deletions
diff --git a/src/urubu/grammar/lexical/parser/error.go b/src/urubu/grammar/lexical/parser/error.go
deleted file mode 100644
index be81da4..0000000
--- a/src/urubu/grammar/lexical/parser/error.go
+++ /dev/null
@@ -1,36 +0,0 @@
-package parser
-
-import "fmt"
-
-var (
-	ParseErr = fmt.Errorf("parse error")
-
-	// lexical errors
-	synErrIncompletedEscSeq     = fmt.Errorf("incompleted escape sequence; unexpected EOF following \\")
-	synErrInvalidEscSeq         = fmt.Errorf("invalid escape sequence")
-	synErrInvalidCodePoint      = fmt.Errorf("code points must consist of just 4 or 6 hex digits")
-	synErrCharPropInvalidSymbol = fmt.Errorf("invalid character property symbol")
-	SynErrFragmentInvalidSymbol = fmt.Errorf("invalid fragment symbol")
-
-	// syntax errors
-	synErrUnexpectedToken        = fmt.Errorf("unexpected token")
-	synErrNullPattern            = fmt.Errorf("a pattern must be a non-empty byte sequence")
-	synErrUnmatchablePattern     = fmt.Errorf("a pattern cannot match any characters")
-	synErrAltLackOfOperand       = fmt.Errorf("an alternation expression must have operands")
-	synErrRepNoTarget            = fmt.Errorf("a repeat expression must have an operand")
-	synErrGroupNoElem            = fmt.Errorf("a grouping expression must include at least one character")
-	synErrGroupUnclosed          = fmt.Errorf("unclosed grouping expression")
-	synErrGroupNoInitiator       = fmt.Errorf(") needs preceding (")
-	synErrGroupInvalidForm       = fmt.Errorf("invalid grouping expression")
-	synErrBExpNoElem             = fmt.Errorf("a bracket expression must include at least one character")
-	synErrBExpUnclosed           = fmt.Errorf("unclosed bracket expression")
-	synErrBExpInvalidForm        = fmt.Errorf("invalid bracket expression")
-	synErrRangeInvalidOrder      = fmt.Errorf("a range expression with invalid order")
-	synErrRangePropIsUnavailable = fmt.Errorf("a property expression is unavailable in a range expression")
-	synErrRangeInvalidForm       = fmt.Errorf("invalid range expression")
-	synErrCPExpInvalidForm       = fmt.Errorf("invalid code point expression")
-	synErrCPExpOutOfRange        = fmt.Errorf("a code point must be between U+0000 to U+10FFFF")
-	synErrCharPropExpInvalidForm = fmt.Errorf("invalid character property expression")
-	synErrCharPropUnsupported    = fmt.Errorf("unsupported character property")
-	synErrFragmentExpInvalidForm = fmt.Errorf("invalid fragment expression")
-)