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// CodeMirror, copyright (c) by Marijn Haverbeke and others

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// Distributed under an MIT license: http://codemirror.net/LICENSE

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/**********************************************************

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* This script provides syntax highlighting support for

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* the Ntriples format.

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* Ntriples format specification:

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* http://www.w3.org/TR/rdf-testcases/#ntriples

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***********************************************************/

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The following expression defines the defined ASF grammar transitions.

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pre_subject ->

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{

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( writing_subject_uri | writing_bnode_uri )

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-> pre_predicate

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-> writing_predicate_uri

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-> pre_object

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-> writing_object_uri | writing_object_bnode |

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(

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writing_object_literal

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-> writing_literal_lang | writing_literal_type

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)

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-> post_object

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-> BEGIN

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} otherwise {

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-> ERROR

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}

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(function(mod) {

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if (typeof exports == "object" && typeof module == "object") // CommonJS

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mod(require("../../lib/codemirror"));

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else if (typeof define == "function" && define.amd) // AMD

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define(["../../lib/codemirror"], mod);

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else // Plain browser env

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mod(CodeMirror);

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})(function(CodeMirror) {

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"use strict";

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CodeMirror.defineMode("ntriples", function() {

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var Location = {

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PRE_SUBJECT : 0,

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WRITING_SUB_URI : 1,

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WRITING_BNODE_URI : 2,

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PRE_PRED : 3,

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WRITING_PRED_URI : 4,

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PRE_OBJ : 5,

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WRITING_OBJ_URI : 6,

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WRITING_OBJ_BNODE : 7,

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WRITING_OBJ_LITERAL : 8,

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WRITING_LIT_LANG : 9,

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WRITING_LIT_TYPE : 10,

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POST_OBJ : 11,

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ERROR : 12

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};

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function transitState(currState, c) {

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var currLocation = currState.location;

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var ret;

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// Opening.

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if (currLocation == Location.PRE_SUBJECT && c == '<') ret = Location.WRITING_SUB_URI;

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else if(currLocation == Location.PRE_SUBJECT && c == '_') ret = Location.WRITING_BNODE_URI;

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else if(currLocation == Location.PRE_PRED && c == '<') ret = Location.WRITING_PRED_URI;

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else if(currLocation == Location.PRE_OBJ && c == '<') ret = Location.WRITING_OBJ_URI;

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else if(currLocation == Location.PRE_OBJ && c == '_') ret = Location.WRITING_OBJ_BNODE;

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else if(currLocation == Location.PRE_OBJ && c == '"') ret = Location.WRITING_OBJ_LITERAL;

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// Closing.

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else if(currLocation == Location.WRITING_SUB_URI && c == '>') ret = Location.PRE_PRED;

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else if(currLocation == Location.WRITING_BNODE_URI && c == ' ') ret = Location.PRE_PRED;

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else if(currLocation == Location.WRITING_PRED_URI && c == '>') ret = Location.PRE_OBJ;

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else if(currLocation == Location.WRITING_OBJ_URI && c == '>') ret = Location.POST_OBJ;

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else if(currLocation == Location.WRITING_OBJ_BNODE && c == ' ') ret = Location.POST_OBJ;

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else if(currLocation == Location.WRITING_OBJ_LITERAL && c == '"') ret = Location.POST_OBJ;

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else if(currLocation == Location.WRITING_LIT_LANG && c == ' ') ret = Location.POST_OBJ;

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else if(currLocation == Location.WRITING_LIT_TYPE && c == '>') ret = Location.POST_OBJ;

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// Closing typed and language literal.

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else if(currLocation == Location.WRITING_OBJ_LITERAL && c == '@') ret = Location.WRITING_LIT_LANG;

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else if(currLocation == Location.WRITING_OBJ_LITERAL && c == '^') ret = Location.WRITING_LIT_TYPE;

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// Spaces.

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else if( c == ' ' &&

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(

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currLocation == Location.PRE_SUBJECT ||

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currLocation == Location.PRE_PRED ||

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currLocation == Location.PRE_OBJ ||

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currLocation == Location.POST_OBJ

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)

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) ret = currLocation;

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// Reset.

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else if(currLocation == Location.POST_OBJ && c == '.') ret = Location.PRE_SUBJECT;

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// Error

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else ret = Location.ERROR;

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currState.location=ret;

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}

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return {

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startState: function() {

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return {

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location : Location.PRE_SUBJECT,

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uris : [],

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anchors : [],

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bnodes : [],

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langs : [],

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types : []

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};

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token: function(stream, state) {

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var ch = stream.next();

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if(ch == '<') {

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transitState(state, ch);

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var parsedURI = '';

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stream.eatWhile( function(c) { if( c != '#' && c != '>' ) { parsedURI += c; return true; } return false;} );

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state.uris.push(parsedURI);

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if( stream.match('#', false) ) return 'variable';

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stream.next();

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transitState(state, '>');

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return 'variable';

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}

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if(ch == '#') {

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var parsedAnchor = '';

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stream.eatWhile(function(c) { if(c != '>' && c != ' ') { parsedAnchor+= c; return true; } return false;});

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state.anchors.push(parsedAnchor);

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return 'variable-2';

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}

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if(ch == '>') {

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transitState(state, '>');

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return 'variable';

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}

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if(ch == '_') {

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transitState(state, ch);

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var parsedBNode = '';

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stream.eatWhile(function(c) { if( c != ' ' ) { parsedBNode += c; return true; } return false;});

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state.bnodes.push(parsedBNode);

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stream.next();

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transitState(state, ' ');

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return 'builtin';

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}

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if(ch == '"') {

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transitState(state, ch);

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stream.eatWhile( function(c) { return c != '"'; } );

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stream.next();

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if( stream.peek() != '@' && stream.peek() != '^' ) {

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transitState(state, '"');

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}

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return 'string';

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}

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if( ch == '@' ) {

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transitState(state, '@');

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var parsedLang = '';

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stream.eatWhile(function(c) { if( c != ' ' ) { parsedLang += c; return true; } return false;});

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state.langs.push(parsedLang);

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stream.next();

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transitState(state, ' ');

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return 'string-2';

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}

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if( ch == '^' ) {

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stream.next();

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transitState(state, '^');

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var parsedType = '';

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stream.eatWhile(function(c) { if( c != '>' ) { parsedType += c; return true; } return false;} );

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state.types.push(parsedType);

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stream.next();

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transitState(state, '>');

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return 'variable';

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}

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if( ch == ' ' ) {

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transitState(state, ch);

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}

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if( ch == '.' ) {

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transitState(state, ch);

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}

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}

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};

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});

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CodeMirror.defineMIME("text/n-triples", "ntriples");

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});

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