Add report type

internal/parser/lexer.go

@@ -5,7 +5,8 @@ import (
 )
 
 var lex = lexer.MustSimple([]lexer.SimpleRule{
-	{Name: "header", Pattern: `TAF (AMD|COR)? ?`},
+	{Name: "header", Pattern: `TAF ?`},
+	{Name: "Type", Pattern: "AMD|COR"},
 	{Name: "Remark", Pattern: `RMK[^\n]*`},
 	{Name: "Number", Pattern: `\d+`},
 	{Name: "Modifier", Pattern: `[+-]|VC`},

internal/parser/parser.go

@@ -6,6 +6,7 @@ import (
 )
 
 type AST struct {
+	Type  *string `(@Type WS)?`
 	Items []*Item `@@*`
 }