Adding acc to gitGrapg parser

src/diagrams/git/gitGraphAst.js

@@ -4,6 +4,13 @@ import mermaidAPI from '../../mermaidAPI';
 import * as configApi from '../../config';
 import { getConfig } from '../../config';
 import common from '../common/common';
+import {
+  setTitle,
+  getTitle,
+  getAccDescription,
+  setAccDescription,
+  clear as commonClear,
+} from '../../commonDb';
 
 let mainBranchName = getConfig().gitGraph.mainBranchName;
 let commits = {};
@@ -14,6 +21,9 @@ let curBranch = mainBranchName;
 let direction = 'LR';
 let seq = 0;
 
+/**
+ *
+ */
 function getId() {
   return random({ length: 7 });
 }
@@ -326,6 +336,7 @@ export const clear = function () {
   branches[mainBranch] = null;
   curBranch = mainBranch;
   seq = 0;
+  commonClear();
 };
 
 export const getBranchesAsObjArray = function () {
@@ -390,5 +401,9 @@ export default {
   getCurrentBranch,
   getDirection,
   getHead,
+  setTitle,
+  getTitle,
+  getAccDescription,
+  setAccDescription,
   commitType,
 };

src/diagrams/git/gitGraphParserV2.spec.js

@@ -616,4 +616,29 @@ describe('when parsing a gitGraph', function () {
       );
     }
   });
+  describe('accessibility', () => {
+    it('should handle a title and a description (accDescr)', () => {
+      const str = `gitGraph:
+      accTitle: This is a title
+      accDescr: This is a description
+    commit
+    `;
+      parser.parse(str);
+      expect(parser.yy.getTitle()).toBe('This is a title');
+      expect(parser.yy.getAccDescription()).toBe('This is a description');
+    });
+    it('should handle a title and a multiline description (accDescr)', () => {
+      const str = `gitGraph:
+      accTitle: This is a title
+      accDescr {
+        This is a description
+        using multiple lines
+      }
+    commit
+    `;
+      parser.parse(str);
+      expect(parser.yy.getTitle()).toBe('This is a title');
+      expect(parser.yy.getAccDescription()).toBe('This is a description\nusing multiple lines');
+    });
+  });
 });

src/diagrams/git/parser/gitGraph.jison

@@ -13,6 +13,9 @@
 %x type_directive
 %x arg_directive
 %x close_directive
+%x acc_title
+%x acc_descr
+%x acc_descr_multiline
 %options case-insensitive
 
 
@@ -22,6 +25,13 @@
 <type_directive>":"                                             { this.popState(); this.begin('arg_directive'); return ':'; }
 <type_directive,arg_directive>\}\%\%                            { this.popState(); this.popState(); return 'close_directive'; }
 <arg_directive>((?:(?!\}\%\%).|\n)*)                            return 'arg_directive';
+accTitle\s*":"\s*                                               { this.begin("acc_title");return 'acc_title'; }
+<acc_title>(?!\n|;|#)*[^\n]*                                    { this.popState(); return "acc_title_value"; }
+accDescr\s*":"\s*                                               { this.begin("acc_descr");return 'acc_descr'; }
+<acc_descr>(?!\n|;|#)*[^\n]*                                    { this.popState(); return "acc_descr_value"; }
+accDescr\s*"{"\s*                                               { this.begin("acc_descr_multiline");}
+<acc_descr_multiline>[\}]                                       { this.popState(); }
+<acc_descr_multiline>[^\}]*                                     return "acc_descr_multiline_value";
 (\r?\n)+                               /*{console.log('New line');return 'NL';}*/ return 'NL';
 \s+                                    /* skip all whitespace */
 \#[^\n]*                               /* skip comments */
@@ -90,6 +100,9 @@ line
 statement
     : commitStatement
     | mergeStatement
+    | acc_title acc_title_value  { $$=$2.trim();yy.setTitle($$); }
+    | acc_descr acc_descr_value  { $$=$2.trim();yy.setAccDescription($$); }
+    | acc_descr_multiline_value { $$=$1.trim();yy.setAccDescription($$); }  | section {yy.addSection($1.substr(8));$$=$1.substr(8);}
     | BRANCH ID {yy.branch($2)}
     | CHECKOUT ID {yy.checkout($2)}
     // | RESET reset_arg {yy.reset($2)}