Parse @

Author: deliahu

go.mod

@@ -1,4 +1,4 @@
-module "gopkg.in/yaml.v2"
+module "github.com/cortexlabs/yaml"
 
 require (
 	"gopkg.in/check.v1" v0.0.0-20161208181325-20d25e280405

scannerc.go

@@ -794,6 +794,16 @@ func yaml_parser_fetch_next_token(parser *yaml_parser_t) bool {
 		return yaml_parser_fetch_flow_scalar(parser, false)
 	}
 
+	// Is it an @?
+	if parser.buffer[parser.buffer_pos] == '@' {
+		newBuf := make([]byte, len(parser.buffer)+len(atSymbolEscapeSeqBytes)-1, cap(parser.buffer)+len(atSymbolEscapeSeqBytes)-1)
+		copy(newBuf, parser.buffer[:parser.buffer_pos])
+		copy(newBuf[parser.buffer_pos:], atSymbolEscapeSeqBytes)
+		copy(newBuf[parser.buffer_pos+len(atSymbolEscapeSeqBytes):], parser.buffer[parser.buffer_pos+1:])
+		parser.buffer = newBuf
+		return yaml_parser_fetch_plain_scalar(parser)
+	}
+
 	// Is it a plain scalar?
 	//
 	// A plain scalar may start with any non-blank characters except

yaml.go

@@ -464,3 +464,30 @@ func isZero(v reflect.Value) bool {
 	}
 	return false
 }
+
+const atSymbolEscapeSeq = "🌝🌝🌝🌝🌝"
+
+var atSymbolEscapeSeqBytes = []byte(atSymbolEscapeSeq)
+
+func ExtractAtSymbolText(input interface{}) (string, bool) {
+	if str, ok := input.(string); ok {
+		if strings.HasPrefix(str, atSymbolEscapeSeq) {
+			return str[len(atSymbolEscapeSeq):], true
+		}
+	}
+	return "", false
+}
+
+func EscapeAtSymbol(str string) (string, bool) {
+	if strings.HasPrefix(str, "@") {
+		return atSymbolEscapeSeq + str[1:], true
+	}
+	return str, false
+}
+
+func UnescapeAtSymbol(str string) (string, bool) {
+	if strings.HasPrefix(str, atSymbolEscapeSeq) {
+		return "@" + str[len(atSymbolEscapeSeq):], true
+	}
+	return str, false
+}