roots 3.0.0

includes/js/codemirror/parsesparql.js

@@ -0,0 +1,162 @@
+var SparqlParser = Editor.Parser = (function() {
+  function wordRegexp(words) {
+    return new RegExp("^(?:" + words.join("|") + ")$", "i");
+  }
+  var ops = wordRegexp(["str", "lang", "langmatches", "datatype", "bound", "sameterm", "isiri", "isuri",
+                        "isblank", "isliteral", "union", "a"]);
+  var keywords = wordRegexp(["base", "prefix", "select", "distinct", "reduced", "construct", "describe",
+                             "ask", "from", "named", "where", "order", "limit", "offset", "filter", "optional",
+                             "graph", "by", "asc", "desc"]);
+  var operatorChars = /[*+\-<>=&|]/;
+
+  var tokenizeSparql = (function() {
+    function normal(source, setState) {
+      var ch = source.next();
+      if (ch == "$" || ch == "?") {
+        source.nextWhileMatches(/[\w\d]/);
+        return "sp-var";
+      }
+      else if (ch == "<" && !source.matches(/[\s\u00a0=]/)) {
+        source.nextWhileMatches(/[^\s\u00a0>]/);
+        if (source.equals(">")) source.next();
+        return "sp-uri";
+      }
+      else if (ch == "\"" || ch == "'") {
+        setState(inLiteral(ch));
+        return null;
+      }
+      else if (/[{}\(\),\.;\[\]]/.test(ch)) {
+        return "sp-punc";
+      }
+      else if (ch == "#") {
+        while (!source.endOfLine()) source.next();
+        return "sp-comment";
+      }
+      else if (operatorChars.test(ch)) {
+        source.nextWhileMatches(operatorChars);
+        return "sp-operator";
+      }
+      else if (ch == ":") {
+        source.nextWhileMatches(/[\w\d\._\-]/);
+        return "sp-prefixed";
+      }
+      else {
+        source.nextWhileMatches(/[_\w\d]/);
+        if (source.equals(":")) {
+          source.next();
+          source.nextWhileMatches(/[\w\d_\-]/);
+          return "sp-prefixed";
+        }
+        var word = source.get(), type;
+        if (ops.test(word))
+          type = "sp-operator";
+        else if (keywords.test(word))
+          type = "sp-keyword";
+        else
+          type = "sp-word";
+        return {style: type, content: word};
+      }
+    }
+
+    function inLiteral(quote) {
+      return function(source, setState) {
+        var escaped = false;
+        while (!source.endOfLine()) {
+          var ch = source.next();
+          if (ch == quote && !escaped) {
+            setState(normal);
+            break;
+          }
+          escaped = !escaped && ch == "\\";
+        }
+        return "sp-literal";
+      };
+    }
+
+    return function(source, startState) {
+      return tokenizer(source, startState || normal);
+    };
+  })();
+
+  function indentSparql(context) {
+    return function(nextChars) {
+      var firstChar = nextChars && nextChars.charAt(0);
+      if (/[\]\}]/.test(firstChar))
+        while (context && context.type == "pattern") context = context.prev;
+
+      var closing = context && firstChar == matching[context.type];
+      if (!context)
+        return 0;
+      else if (context.type == "pattern")
+        return context.col;
+      else if (context.align)
+        return context.col - (closing ? context.width : 0);
+      else
+        return context.indent + (closing ? 0 : indentUnit);
+    }
+  }
+
+  function parseSparql(source) {
+    var tokens = tokenizeSparql(source);
+    var context = null, indent = 0, col = 0;
+    function pushContext(type, width) {
+      context = {prev: context, indent: indent, col: col, type: type, width: width};
+    }
+    function popContext() {
+      context = context.prev;
+    }
+
+    var iter = {
+      next: function() {
+        var token = tokens.next(), type = token.style, content = token.content, width = token.value.length;
+
+        if (content == "\n") {
+          token.indentation = indentSparql(context);
+          indent = col = 0;
+          if (context && context.align == null) context.align = false;
+        }
+        else if (type == "whitespace" && col == 0) {
+          indent = width;
+        }
+        else if (type != "sp-comment" && context && context.align == null) {
+          context.align = true;
+        }
+
+        if (content != "\n") col += width;
+
+        if (/[\[\{\(]/.test(content)) {
+          pushContext(content, width);
+        }
+        else if (/[\]\}\)]/.test(content)) {
+          while (context && context.type == "pattern")
+            popContext();
+          if (context && content == matching[context.type])
+            popContext();
+        }
+        else if (content == "." && context && context.type == "pattern") {
+          popContext();
+        }
+        else if ((type == "sp-word" || type == "sp-prefixed" || type == "sp-uri" || type == "sp-var" || type == "sp-literal") &&
+                 context && /[\{\[]/.test(context.type)) {
+          pushContext("pattern", width);
+        }
+
+        return token;
+      },
+
+      copy: function() {
+        var _context = context, _indent = indent, _col = col, _tokenState = tokens.state;
+        return function(source) {
+          tokens = tokenizeSparql(source, _tokenState);
+          context = _context;
+          indent = _indent;
+          col = _col;
+          return iter;
+        };
+      }
+    };
+    return iter;
+  }
+
+  return {make: parseSparql, electricChars: "}]"};
+})();