better traces & debug

.gitignore

@@ -1 +1,2 @@
 build/
+main

main.vala

@@ -10,7 +10,7 @@ int main (string[] args)
     var done     = false;
 
     of.title ("Pluie Yaml Parser", Pluie.Yaml.VERSION, "a-sansara");
-
+    Pluie.Yaml.Scanner.DEBUG = true;
     var loader = new Yaml.Loader (path, true, true);
     if ((done = loader.done)) {
         Yaml.NodeRoot root = loader.get_nodes ();

src/vala/Pluie/Yaml.BaseNode.vala

@@ -188,20 +188,28 @@ public class Pluie.Yaml.BaseNode : Object, Pluie.Yaml.Node
     /**
      * get a presentation string of current Yaml.Node
      */
-    public string to_string (bool withIndent = true)
+    public string to_string (bool indentFormat = true, bool withParent = false, bool withUuid = false, bool withIndent = false, bool withRefCount = false)
     {
         
-        return "%s%s%s%s%s%s%s".printf (
+        return "%s%s%s%s%s%s%s%s".printf (
-            this.node_type.is_root () ? "" : of.s_indent ((int8) (withIndent ? this.indent : 0)),
+            this.node_type.is_root () ? "" : of.s_indent ((int8) (indentFormat ? this.indent : 0)),
-            of.c (ECHO.OPTION).s ("<"),
+            of.c (ECHO.OPTION).s ("["),
             of.c (ECHO.OPTION_SEP).s (this.node_type.infos ()),
-            this.name != null ? " %s".printf (this.name)
+            this.name != null && !this.node_type.is_scalar ()
-                              : (this.node_type.is_scalar () ? " %s".printf (this.data) : ""),
+                ?  of.c (ECHO.TIME).s (" %s".printf (this.name))
-            "[%x]".printf (this.ref_count),
+                : (
-            this.parent == null ? "" : this.parent.name+"|"+this.indent.to_string(),
+                    this.node_type.is_scalar ()
-//~             " (%d) ".printf (this.indent),
+                        ? of.c(ECHO.DATE).s (" %s".printf (this.data))
-            of.c (ECHO.OPTION).s (">")/*,
+                        : ""
-            of.c (ECHO.DATE).s (" %s".printf(this.uuid))*/
+            ),
+            withRefCount ? of.c (ECHO.COMMAND).s ("[%x]".printf (this.ref_count)) : "",
+            !withParent || this.parent == null
+                ? ""
+                : of.c (ECHO.SECTION).s (" "+this.parent.name)+(
+                    withIndent ? of.c (ECHO.NUM).s (" "+this.indent.to_string()) : ""
+                ),
+            withUuid ? of.c (ECHO.COMMENT).s (" %s".printf(this.uuid[0:8]+"...")) : "",
+            of.c (ECHO.OPTION).s ("]")
         );
     }
 

src/vala/Pluie/Yaml.Loader.vala

@@ -38,6 +38,11 @@ public class Pluie.Yaml.Loader
             this.get_nodes ().display_childs ();
             of.state(true);
         }
+        if (!this.done) {
+            var evt = this.scanner.get_error_event ();
+            of.error ("line %d (%s)".printf (evt.line, evt.data["error"]));
+            this.displayFile (evt.line);
+        }
     }
 
     /**
@@ -51,17 +56,43 @@ public class Pluie.Yaml.Loader
     /**
      * display original file
      */
-    public void displayFile ()
+    public void displayFile (int errorLine = 0)
     {
-        of.action ("Reading file", this.reader.path);
+        of.action (errorLine == 0 ? "Reading file" : "Invalid Yaml File", this.reader.path);
         of.echo ();
+        this.reader.rewind(new Io.StreamLineMark(0, 0));
+        int     line = 0;
+        string? data = null;;
         while (this.reader.readable) {
-            of.echo ("%s %s".printf (
+            line = this.reader.line + 1;
-                of.c (ECHO.DATE   ).s ("%03d |".printf (this.reader.line)), 
+            data = this.reader.read ();
-                of.c (ECHO.OPTION_SEP).s (this.reader.read ()))
+            if (errorLine > 0 && line > 0) {
-            ); 
+                if (line < errorLine - 7) continue;
+                else if (line == errorLine - 7) {
+                    of.echo ("%s%s%s".printf (
+                        of.c (ECHO.MICROTIME   ).s (" %03d ".printf (line-1)),
+                        of.c (ECHO.DATE).s ("| "),
+                        of.c (ECHO.COMMAND).s ("... ")
+                    ));
                 }
-        of.echo ("EOF");
+            }
-        of.state (true);
+            of.echo ("%s%s%s".printf (
+                of.c (ECHO.MICROTIME   ).s (" %03d ".printf (line)),
+                of.c (ECHO.DATE).s ("| "),
+                errorLine > 0 && line == errorLine
+                    ? of.c (ECHO.FAIL).s (data)
+                    : of.c (ECHO.COMMAND).s (data)
+            ), errorLine == 0 || line < errorLine);
+            if (errorLine > 0 &&  line == errorLine) {
+                int len = of.term_width - data.length - 13;
+                stdout.printf (of.c (ECHO.FAIL).s (@" %$(len)s ".printf (" ")));
+                of.echo (Color.off (), true);
+            }
+            if (errorLine > 0 && line > errorLine) {
+                break;
+            }
+        }
+        of.echo (errorLine == 0 ? "EOF" : "");
+        of.state (errorLine == 0);
     }
 }

src/vala/Pluie/Yaml.Node.vala

@@ -77,6 +77,6 @@ public interface Pluie.Yaml.Node : Object
     /**
      * get a presentation string of current Yaml.Node
      */
-    public abstract string to_string (bool withIndent = true);
+    public abstract string to_string (bool indentFormat = true, bool withParent = false, bool withUuid = true, bool withIndent = false, bool withRefCount = true);
 
 }

src/vala/Pluie/Yaml.Processor.vala

@@ -22,6 +22,11 @@ public class Pluie.Yaml.Processor
      */
     Gee.HashMap<string, Yaml.Node>    anchors          { get; internal set; }
 
+    /**
+     * Error event
+     */
+    public Yaml.Event?                error_event      { get; internal set; }
+
     /**
      * the root Yaml.Node
      */
@@ -138,9 +143,13 @@ public class Pluie.Yaml.Processor
         string? key      = null;
         string? id       = null;
         Yaml.Event? evt;
-        of.action ("Processing events");
+        if (Pluie.Yaml.Scanner.DEBUG) of.action ("Processing events");
         for (var has_next = it.next (); has_next; has_next = it.next ()) {
             evt = it.get ();
+            if (evt.evtype.is_error ()) {
+                error_event = evt;
+                break;
+            }
             if (evt.evtype.is_mapping_end () || evt.evtype.is_sequence_end ()) {
                 indent          -= 4;
                 this.parent_node = this.prev_node.parent != this.root ? this.prev_node.parent.parent : this.root;
@@ -211,7 +220,7 @@ public class Pluie.Yaml.Processor
                 change = false;
             }
         }
-        this.done = this.root != null;
+        this.done = error_event == null && this.root != null;
         return done;
     }
 

src/vala/Pluie/Yaml.Scanner.vala

@@ -8,6 +8,7 @@ extern void yaml_parse_file(string srcPath, string destPath);
  */
 public class Pluie.Yaml.Scanner
 {
+    public static bool DEBUG         = false;
     /**
      * Regex pattern use to find EVENT
      */
@@ -95,6 +96,14 @@ public class Pluie.Yaml.Scanner
         return (this.processor.root as Yaml.NodeRoot);
     }
 
+    /**
+     * return error Yaml Event
+     */
+    public Yaml.Event? get_error_event ()
+    {
+        return this.processor.error_event;
+    }
+
     /**
      * scan specifiyed file generated throught yaml.c
      * @param optional file path to scan
@@ -110,14 +119,14 @@ public class Pluie.Yaml.Scanner
         }
         this.processor = new Yaml.Processor ();
         this.done      = false;
-        of.action ("Scanning events", path);
+        if (Pluie.Yaml.Scanner.DEBUG) of.action ("Scanning events", path);
         while (this.reader.readable) {
             this.scan_event (this.reader.read ());
         }
         this.done = true;
-        of.state (this.done);
+        if (Pluie.Yaml.Scanner.DEBUG) of.state (this.done);
         this.done = this.done && this.processor.run ();
-        of.state (this.done);
+        if (Pluie.Yaml.Scanner.DEBUG) of.state (this.done);
         Dbg.out (Log.METHOD, "done:%d".printf ((int)done), Log.LINE, Log.FILE);
         return this.done;
     }

src/vala/Pluie/Yaml.global.vala

@@ -134,6 +134,14 @@ namespace Pluie
                 return this == EVT.BLOCK_END;
             }
 
+            /**
+              * @return event is error event
+              */
+            public bool is_error ()
+            {
+                return this == EVT.NONE;
+            }
+
         }
 
         /**