ntriples.js
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// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: http://codemirror.net/LICENSE
/**********************************************************
* This script provides syntax highlighting support for
* the Ntriples format.
* Ntriples format specification:
* http://www.w3.org/TR/rdf-testcases/#ntriples
***********************************************************/
/*
The following expression defines the defined ASF grammar transitions.
pre_subject ->
{
( writing_subject_uri | writing_bnode_uri )
-> pre_predicate
-> writing_predicate_uri
-> pre_object
-> writing_object_uri | writing_object_bnode |
(
writing_object_literal
-> writing_literal_lang | writing_literal_type
)
-> post_object
-> BEGIN
} otherwise {
-> ERROR
}
*/
(function(mod) {
if (typeof exports == "object" && typeof module == "object") // CommonJS
mod(require("../../lib/codemirror"));
else if (typeof define == "function" && define.amd) // AMD
define(["../../lib/codemirror"], mod);
else // Plain browser env
mod(CodeMirror);
})(function(CodeMirror) {
"use strict";
CodeMirror.defineMode("ntriples", function() {
var Location = {
PRE_SUBJECT : 0,
WRITING_SUB_URI : 1,
WRITING_BNODE_URI : 2,
PRE_PRED : 3,
WRITING_PRED_URI : 4,
PRE_OBJ : 5,
WRITING_OBJ_URI : 6,
WRITING_OBJ_BNODE : 7,
WRITING_OBJ_LITERAL : 8,
WRITING_LIT_LANG : 9,
WRITING_LIT_TYPE : 10,
POST_OBJ : 11,
ERROR : 12
};
function transitState(currState, c) {
var currLocation = currState.location;
var ret;
// Opening.
if (currLocation == Location.PRE_SUBJECT && c == '<') ret = Location.WRITING_SUB_URI;
else if(currLocation == Location.PRE_SUBJECT && c == '_') ret = Location.WRITING_BNODE_URI;
else if(currLocation == Location.PRE_PRED && c == '<') ret = Location.WRITING_PRED_URI;
else if(currLocation == Location.PRE_OBJ && c == '<') ret = Location.WRITING_OBJ_URI;
else if(currLocation == Location.PRE_OBJ && c == '_') ret = Location.WRITING_OBJ_BNODE;
else if(currLocation == Location.PRE_OBJ && c == '"') ret = Location.WRITING_OBJ_LITERAL;
// Closing.
else if(currLocation == Location.WRITING_SUB_URI && c == '>') ret = Location.PRE_PRED;
else if(currLocation == Location.WRITING_BNODE_URI && c == ' ') ret = Location.PRE_PRED;
else if(currLocation == Location.WRITING_PRED_URI && c == '>') ret = Location.PRE_OBJ;
else if(currLocation == Location.WRITING_OBJ_URI && c == '>') ret = Location.POST_OBJ;
else if(currLocation == Location.WRITING_OBJ_BNODE && c == ' ') ret = Location.POST_OBJ;
else if(currLocation == Location.WRITING_OBJ_LITERAL && c == '"') ret = Location.POST_OBJ;
else if(currLocation == Location.WRITING_LIT_LANG && c == ' ') ret = Location.POST_OBJ;
else if(currLocation == Location.WRITING_LIT_TYPE && c == '>') ret = Location.POST_OBJ;
// Closing typed and language literal.
else if(currLocation == Location.WRITING_OBJ_LITERAL && c == '@') ret = Location.WRITING_LIT_LANG;
else if(currLocation == Location.WRITING_OBJ_LITERAL && c == '^') ret = Location.WRITING_LIT_TYPE;
// Spaces.
else if( c == ' ' &&
(
currLocation == Location.PRE_SUBJECT ||
currLocation == Location.PRE_PRED ||
currLocation == Location.PRE_OBJ ||
currLocation == Location.POST_OBJ
)
) ret = currLocation;
// Reset.
else if(currLocation == Location.POST_OBJ && c == '.') ret = Location.PRE_SUBJECT;
// Error
else ret = Location.ERROR;
currState.location=ret;
}
return {
startState: function() {
return {
location : Location.PRE_SUBJECT,
uris : [],
anchors : [],
bnodes : [],
langs : [],
types : []
};
},
token: function(stream, state) {
var ch = stream.next();
if(ch == '<') {
transitState(state, ch);
var parsedURI = '';
stream.eatWhile( function(c) { if( c != '#' && c != '>' ) { parsedURI += c; return true; } return false;} );
state.uris.push(parsedURI);
if( stream.match('#', false) ) return 'variable';
stream.next();
transitState(state, '>');
return 'variable';
}
if(ch == '#') {
var parsedAnchor = '';
stream.eatWhile(function(c) { if(c != '>' && c != ' ') { parsedAnchor+= c; return true; } return false;});
state.anchors.push(parsedAnchor);
return 'variable-2';
}
if(ch == '>') {
transitState(state, '>');
return 'variable';
}
if(ch == '_') {
transitState(state, ch);
var parsedBNode = '';
stream.eatWhile(function(c) { if( c != ' ' ) { parsedBNode += c; return true; } return false;});
state.bnodes.push(parsedBNode);
stream.next();
transitState(state, ' ');
return 'builtin';
}
if(ch == '"') {
transitState(state, ch);
stream.eatWhile( function(c) { return c != '"'; } );
stream.next();
if( stream.peek() != '@' && stream.peek() != '^' ) {
transitState(state, '"');
}
return 'string';
}
if( ch == '@' ) {
transitState(state, '@');
var parsedLang = '';
stream.eatWhile(function(c) { if( c != ' ' ) { parsedLang += c; return true; } return false;});
state.langs.push(parsedLang);
stream.next();
transitState(state, ' ');
return 'string-2';
}
if( ch == '^' ) {
stream.next();
transitState(state, '^');
var parsedType = '';
stream.eatWhile(function(c) { if( c != '>' ) { parsedType += c; return true; } return false;} );
state.types.push(parsedType);
stream.next();
transitState(state, '>');
return 'variable';
}
if( ch == ' ' ) {
transitState(state, ch);
}
if( ch == '.' ) {
transitState(state, ch);
}
}
};
});
CodeMirror.defineMIME("text/n-triples", "ntriples");
});