* Draft implementation of info diagram

* Fix for issue #109

gulpfile.js

@@ -27,6 +27,7 @@ gulp.task('jison', shell.task([
   'jison src/diagrams/flowchart/parser/flow.jison -o src/diagrams/flowchart/parser/flow.js',
   'jison src/diagrams/flowchart/parser/dot.jison -o src/diagrams/flowchart/parser/dot.js',
   'jison src/diagrams/sequenceDiagram/parser/sequenceDiagram.jison -o src/diagrams/sequenceDiagram/parser/sequenceDiagram.js',
+  'jison src/diagrams/example/parser/example.jison -o src/diagrams/example/parser/example.js',
   //'jison src/diagrams/sequenceDiagram/parser/sequenceDiagram.jison -o src/diagrams/sequenceDiagram/parser/sequenceDiagram.js'
 ]));
 

src/diagrams/example/example.spec.js

@@ -0,0 +1,25 @@
+/**
+ * Created by knut on 14-11-18.
+ */
+describe('when parsing an info graph it',function() {
+    var parseError;
+    beforeEach(function () {
+        ex = require('./parser/example').parser;
+        ex.yy = require('./exampleDb');
+        parseError = function(err, hash) {
+            console.log('Syntax error:' + err);
+        };
+        ex.yy.parseError = parseError;
+    });
+
+    it('should handle an info definition', function () {
+        var str = 'info\nsay: hello';
+
+        ex.parse(str);
+    });
+    it('should handle an showMessage statement definition', function () {
+        var str = 'info\nshowInfo';
+
+        ex.parse(str);
+    });
+});

src/diagrams/example/exampleDb.js

@@ -0,0 +1,23 @@
+/**
+ * Created by knut on 15-01-14.
+ */
+
+var message = '';
+var info = false;
+
+exports.setMessage = function(txt){
+    message = txt;
+};
+
+exports.getMessage = function(){
+    return message;
+};
+
+exports.setInfo = function(inf){
+    info = inf;
+};
+
+exports.getInfo = function(){
+    return info;
+};
+

src/diagrams/example/exampleRenderer.js

@@ -0,0 +1,44 @@
+/**
+ * Created by knut on 14-12-11.
+ */
+var db = require('./exampleDb');
+var exampleParser = require('./parser/example.js');
+
+
+/**
+ * Draws a an info picture in the tag with id: id based on the graph definition in text.
+ * @param text
+ * @param id
+ */
+exports.draw = function (txt, id, ver) {
+    var parser;
+    parser = exampleParser.parser;
+    parser.yy = db;
+
+    // Parse the graph definition
+    parser.parse(txt);
+
+    // Fetch the default direction, use TD if none was found
+    var svg = d3.select('#'+id);
+
+    var textstring = "mermaid!";
+    var g = svg.append("g");
+
+    g.append("text")      // text label for the x axis
+        .attr("x", 100)
+        .attr("y", 40)
+        .attr('class','version')
+        .attr('font-size','32px')
+        .style("text-anchor", "middle")
+        .text('mermaid '+ ver);
+
+    /*
+    var box = exports.bounds.getBounds();
+
+    var height = box.stopy-box.starty+2*conf.diagramMarginY;
+    var width  = box.stopx-box.startx+2*conf.diagramMarginX;*/
+
+    svg.attr("height",100);
+    svg.attr("width", 400 );
+    //svg.attr("viewBox", '0 0 300 150');
+};

src/diagrams/example/parser/example.jison

@@ -0,0 +1,53 @@
+/** js sequence diagrams
+ *  http://bramp.github.io/js-sequence-diagrams/
+ *  (c) 2012-2013 Andrew Brampton (bramp.net)
+ *  Simplified BSD license.
+ */
+%lex
+
+%options case-insensitive
+
+%{
+	// Pre-lexer code can go here
+%}
+
+%%
+
+[\n]+             return 'NL';
+"showInfo"		  return 'showInfo';
+"info"		  return 'info';
+"say"			  return 'say';
+":"[^#\n;]+       return 'TXT';
+<<EOF>>           return 'EOF';
+.                 return 'INVALID';
+
+/lex
+
+%start start
+
+%% /* language grammar */
+
+start
+	: info document 'EOF' { return yy; }
+	;
+
+document
+	: /* empty */
+	| document line
+	;
+
+line
+	: statement { }
+	| 'NL'
+	;
+
+statement
+	:  showInfo   { yy.setInfo(true);  }
+	|  message    { yy.setMessage($1);  }
+	;
+
+message
+	: 'say' TXT { $$ = $1.substring(1).trim().replace(/\\n/gm, "\n"); }
+	;
+
+%%