wrote dsl for ast boiler plate generation

lexer/tokentype_string.go

@@ -0,0 +1,61 @@
+// Code generated by "stringer -type TokenType -linecomment -trimprefix TokenType"; DO NOT EDIT.
+
+package lexer
+
+import "strconv"
+
+func _() {
+	// An "invalid array index" compiler error signifies that the constant values have changed.
+	// Re-run the stringer command to generate them again.
+	var x [1]struct{}
+	_ = x[TokenTypeLeftParen-0]
+	_ = x[TokenTypeRightParen-1]
+	_ = x[TokenTypeLeftBrace-2]
+	_ = x[TokenTypeRightBrace-3]
+	_ = x[TokenTypeComma-4]
+	_ = x[TokenTypeDot-5]
+	_ = x[TokenTypeMinus-6]
+	_ = x[TokenTypePlus-7]
+	_ = x[TokenTypeSemicolon-8]
+	_ = x[TokenTypeSlash-9]
+	_ = x[TokenTypeStar-10]
+	_ = x[TokenTypeBang-11]
+	_ = x[TokenTypeBangEq-12]
+	_ = x[TokenTypeEqual-13]
+	_ = x[TokenTypeEqualEqual-14]
+	_ = x[TokenTypeGreater-15]
+	_ = x[TokenTypeGreaterEq-16]
+	_ = x[TokenTypeLess-17]
+	_ = x[TokenTypeLessEq-18]
+	_ = x[TokenTypeIdentifier-19]
+	_ = x[TokenTypeString-20]
+	_ = x[TokenTypeNumber-21]
+	_ = x[TokenTypeAnd-22]
+	_ = x[TokenTypeClass-23]
+	_ = x[TokenTypeElse-24]
+	_ = x[TokenTypeFalse-25]
+	_ = x[TokenTypeFun-26]
+	_ = x[TokenTypeFor-27]
+	_ = x[TokenTypeIf-28]
+	_ = x[TokenTypeNil-29]
+	_ = x[TokenTypeOr-30]
+	_ = x[TokenTypePrint-31]
+	_ = x[TokenTypeReturn-32]
+	_ = x[TokenTypeSuper-33]
+	_ = x[TokenTypeThis-34]
+	_ = x[TokenTypeTrue-35]
+	_ = x[TokenTypeVar-36]
+	_ = x[TokenTypeWhile-37]
+	_ = x[TokenTypeEOF-38]
+}
+
+const _TokenType_name = "LeftParenRightParenLeftBraceRightBraceCommaDotMinusPlusSemicolonSlashStarBangBangEqEqualEqualEqualGreaterGreaterEqLessLessEqIdentifierStringNumberAndClassElseFalseFunForIfNilOrPrintReturnSuperThisTrueVarWhileEOF"
+
+var _TokenType_index = [...]uint8{0, 9, 19, 28, 38, 43, 46, 51, 55, 64, 69, 73, 77, 83, 88, 98, 105, 114, 118, 124, 134, 140, 146, 149, 154, 158, 163, 166, 169, 171, 174, 176, 181, 187, 192, 196, 200, 203, 208, 211}
+
+func (i TokenType) String() string {
+	if i < 0 || i >= TokenType(len(_TokenType_index)-1) {
+		return "TokenType(" + strconv.FormatInt(int64(i), 10) + ")"
+	}
+	return _TokenType_name[_TokenType_index[i]:_TokenType_index[i+1]]
+}