remove Dumper.emit() and Loader.scan() (#239)

remove Dumper.emit() and Loader.scan()
merged-on-behalf-of: Basile-z <Basile-z@users.noreply.github.com>

source/dyaml/dumper.d

@@ -166,33 +166,6 @@ struct Dumper
                                         ~ name ~ " : " ~ e.msg, e.file, e.line);
             }
         }
-
-    package:
-        /*
-         * Emit specified events. Used for debugging/testing.
-         *
-         * Params:  events = Events to emit.
-         *
-         * Throws:  YAMLException if unable to emit.
-         */
-        void emit(CharacterType = char, Range, T)(Range range, T events) @safe
-            if (isInputRange!T && is(ElementType!T == Event) &&
-                isOutputRange!(Range, char) || isOutputRange!(Range, wchar) || isOutputRange!(Range, dchar))
-        {
-            try
-            {
-                auto emitter = Emitter!(Range, CharacterType)(range, canonical, indent_, textWidth, lineBreak);
-                foreach(ref event; events)
-                {
-                    emitter.emit(event);
-                }
-            }
-            catch(YAMLException e)
-            {
-                throw new YAMLException("Unable to emit YAML to stream "
-                                        ~ name ~ " : " ~ e.msg, e.file, e.line);
-            }
-        }
 }
 ///Write to a file
 @safe unittest

source/dyaml/loader.d

@@ -246,24 +246,6 @@ struct Loader
             }
             return currentNode;
         }
-        // Scan and return all tokens. Used for debugging.
-        const(Token)[] scan() @safe
-        {
-            try
-            {
-                const(Token)[] result;
-                foreach (token; scanner_)
-                {
-                    result ~= token;
-                }
-                return result;
-            }
-            catch(YAMLException e)
-            {
-                throw new YAMLException("Unable to scan YAML from stream " ~
-                                        name_ ~ " : " ~ e.msg, e.file, e.line);
-            }
-        }
 
         // Scan all tokens, throwing them away. Used for benchmarking.
         void scanBench() @safe

source/dyaml/test/emitter.d

@@ -15,11 +15,21 @@ import std.file;
 import std.range;
 import std.typecons;
 
-import dyaml.dumper;
+import dyaml.emitter;
 import dyaml.event;
 import dyaml.test.common;
 import dyaml.token;
 
+// Try to emit an event range.
+void emitTestCommon(T)(ref Appender!string emitStream, T events, bool canonical = false) @safe
+    if (isInputRange!T && is(ElementType!T == Event))
+{
+    auto emitter = Emitter!(typeof(emitStream), char)(emitStream, canonical, 2, 80, LineBreak.unix);
+    foreach(ref event; events)
+    {
+        emitter.emit(event);
+    }
+}
 
 /// Determine if events in events1 are equivalent to events in events2.
 ///
@@ -78,8 +88,8 @@ void testEmitterOnData(string dataFilename, string canonicalFilename) @safe
     //Must exist due to Anchor, Tags reference counts.
     auto loader = Loader.fromFile(dataFilename);
     auto events = loader.parse();
-    auto emitStream = new Appender!string;
-    dumper().emit(emitStream, events);
+    auto emitStream = Appender!string();
+    emitTestCommon(emitStream, events);
 
     static if(verbose)
     {
@@ -106,10 +116,8 @@ void testEmitterOnCanonical(string canonicalFilename) @safe
     auto events = loader.parse();
     foreach(canonical; [false, true])
     {
-        auto emitStream = new Appender!string;
-        auto dumper = dumper();
-        dumper.canonical = canonical;
-        dumper.emit(emitStream, events);
+        auto emitStream = Appender!string();
+        emitTestCommon(emitStream, events, canonical);
         static if(verbose)
         {
             writeln("OUTPUT (canonical=", canonical, "):\n",
@@ -163,8 +171,8 @@ void testEmitterStyles(string dataFilename, string canonicalFilename) @safe
                     }
                     styledEvents ~= event;
                 }
-                auto emitStream = new Appender!string;
-                dumper().emit(emitStream, styledEvents);
+                auto emitStream = Appender!string();
+                emitTestCommon(emitStream, styledEvents);
                 static if(verbose)
                 {
                     writeln("OUTPUT (", filename, ", ", to!string(flowStyle), ", ",

source/dyaml/test/tokens.d

@@ -14,8 +14,23 @@ import std.array;
 import std.file;
 
 import dyaml.test.common;
+import dyaml.reader;
+import dyaml.scanner;
 import dyaml.token;
 
+// Read and scan a YAML doc, returning the tokens.
+const(Token)[] scanTestCommon(string filename) @safe
+{
+    ubyte[] yamlData;
+    () @trusted { yamlData = cast(ubyte[])std.file.read(filename); }();
+    auto scanner = Scanner(new Reader(yamlData));
+    const(Token)[] result;
+    foreach (token; scanner)
+    {
+        result ~= token;
+    }
+    return result;
+}
 
 /**
  * Test tokens output by scanner.
@@ -54,8 +69,7 @@ void testTokens(string dataFilename, string tokensFilename) @safe
         static if(verbose){writeln("tokens1: ", tokens1, "\ntokens2: ", tokens2);}
     }
 
-    auto loader = Loader.fromFile(dataFilename);
-    foreach(token; loader.scan())
+    foreach(token; scanTestCommon(dataFilename))
     {
         if(token.id != TokenID.streamStart && token.id != TokenID.streamEnd)
         {
@@ -81,8 +95,10 @@ void testScanner(string dataFilename, string canonicalFilename) @safe
         {
             static if(verbose){writeln(tokens);}
         }
-        auto loader = Loader.fromFile(filename);
-        foreach(ref token; loader.scan()){tokens ~= to!string(token.id);}
+        foreach(ref token; scanTestCommon(filename))
+        {
+            tokens ~= to!string(token.id);
+        }
     }
 }