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dotparser.js
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dotparser.js
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DotParser = (function(){
/*
* Generated by PEG.js 0.7.0.
*
* http://pegjs.majda.cz/
*/
function quote(s) {
/*
* ECMA-262, 5th ed., 7.8.4: All characters may appear literally in a
* string literal except for the closing quote character, backslash,
* carriage return, line separator, paragraph separator, and line feed.
* Any character may appear in the form of an escape sequence.
*
* For portability, we also escape escape all control and non-ASCII
* characters. Note that "\0" and "\v" escape sequences are not used
* because JSHint does not like the first and IE the second.
*/
return '"' + s
.replace(/\\/g, '\\\\') // backslash
.replace(/"/g, '\\"') // closing quote character
.replace(/\x08/g, '\\b') // backspace
.replace(/\t/g, '\\t') // horizontal tab
.replace(/\n/g, '\\n') // line feed
.replace(/\f/g, '\\f') // form feed
.replace(/\r/g, '\\r') // carriage return
.replace(/[\x00-\x07\x0B\x0E-\x1F\x80-\uFFFF]/g, escape)
+ '"';
}
var result = {
/*
* Parses the input with a generated parser. If the parsing is successfull,
* returns a value explicitly or implicitly specified by the grammar from
* which the parser was generated (see |PEG.buildParser|). If the parsing is
* unsuccessful, throws |PEG.parser.SyntaxError| describing the error.
*/
parse: function(input, startRule) {
var parseFunctions = {
"graph": parse_graph,
"stmt_list": parse_stmt_list,
"stmt": parse_stmt,
"attr_stmt": parse_attr_stmt,
"attr_list": parse_attr_list,
"a_list": parse_a_list,
"edge_stmt": parse_edge_stmt,
"edgeRHS": parse_edgeRHS,
"node_stmt": parse_node_stmt,
"node_id": parse_node_id,
"port": parse_port,
"subgraph": parse_subgraph,
"compass_pt": parse_compass_pt,
"ID": parse_ID,
"STRING": parse_STRING,
"NUMBER": parse_NUMBER,
"HTML_STRING": parse_HTML_STRING,
"html_raw_string": parse_html_raw_string,
"html_char": parse_html_char,
"QUOTED_STRING": parse_QUOTED_STRING,
"chars": parse_chars,
"char": parse_char,
"COMMENT": parse_COMMENT,
"BLOCK_COMMENT": parse_BLOCK_COMMENT,
"C_COMMENT": parse_C_COMMENT,
"MACRO_COMMENT": parse_MACRO_COMMENT,
"_": parse__,
"NEWLINE": parse_NEWLINE,
"WHITESPACE": parse_WHITESPACE
};
if (startRule !== undefined) {
if (parseFunctions[startRule] === undefined) {
throw new Error("Invalid rule name: " + quote(startRule) + ".");
}
} else {
startRule = "graph";
}
var pos = 0;
var reportFailures = 0;
var rightmostFailuresPos = 0;
var rightmostFailuresExpected = [];
function padLeft(input, padding, length) {
var result = input;
var padLength = length - input.length;
for (var i = 0; i < padLength; i++) {
result = padding + result;
}
return result;
}
function escape(ch) {
var charCode = ch.charCodeAt(0);
var escapeChar;
var length;
if (charCode <= 0xFF) {
escapeChar = 'x';
length = 2;
} else {
escapeChar = 'u';
length = 4;
}
return '\\' + escapeChar + padLeft(charCode.toString(16).toUpperCase(), '0', length);
}
function matchFailed(failure) {
if (pos < rightmostFailuresPos) {
return;
}
if (pos > rightmostFailuresPos) {
rightmostFailuresPos = pos;
rightmostFailuresExpected = [];
}
rightmostFailuresExpected.push(failure);
}
function parse_graph() {
var result0, result1, result2, result3, result4, result5, result6, result7, result8, result9, result10;
var pos0, pos1;
reportFailures++;
pos0 = pos;
pos1 = pos;
result0 = parse__();
if (result0 !== null) {
if (input.substr(pos, 6).toLowerCase() === "strict") {
result1 = input.substr(pos, 6);
pos += 6;
} else {
result1 = null;
if (reportFailures === 0) {
matchFailed("\"strict\"");
}
}
result1 = result1 !== null ? result1 : "";
if (result1 !== null) {
result2 = parse__();
if (result2 !== null) {
if (input.substr(pos, 5).toLowerCase() === "graph") {
result3 = input.substr(pos, 5);
pos += 5;
} else {
result3 = null;
if (reportFailures === 0) {
matchFailed("\"graph\"");
}
}
if (result3 === null) {
if (input.substr(pos, 7).toLowerCase() === "digraph") {
result3 = input.substr(pos, 7);
pos += 7;
} else {
result3 = null;
if (reportFailures === 0) {
matchFailed("\"digraph\"");
}
}
}
if (result3 !== null) {
result4 = parse__();
if (result4 !== null) {
result5 = parse_ID();
result5 = result5 !== null ? result5 : "";
if (result5 !== null) {
result6 = parse__();
if (result6 !== null) {
if (input.charCodeAt(pos) === 123) {
result7 = "{";
pos++;
} else {
result7 = null;
if (reportFailures === 0) {
matchFailed("\"{\"");
}
}
if (result7 !== null) {
result8 = parse_stmt_list();
if (result8 !== null) {
if (input.charCodeAt(pos) === 125) {
result9 = "}";
pos++;
} else {
result9 = null;
if (reportFailures === 0) {
matchFailed("\"}\"");
}
}
if (result9 !== null) {
result10 = parse__();
if (result10 !== null) {
result0 = [result0, result1, result2, result3, result4, result5, result6, result7, result8, result9, result10];
} else {
result0 = null;
pos = pos1;
}
} else {
result0 = null;
pos = pos1;
}
} else {
result0 = null;
pos = pos1;
}
} else {
result0 = null;
pos = pos1;
}
} else {
result0 = null;
pos = pos1;
}
} else {
result0 = null;
pos = pos1;
}
} else {
result0 = null;
pos = pos1;
}
} else {
result0 = null;
pos = pos1;
}
} else {
result0 = null;
pos = pos1;
}
} else {
result0 = null;
pos = pos1;
}
} else {
result0 = null;
pos = pos1;
}
if (result0 !== null) {
result0 = (function(offset, strict, type, id, children) {
var ret = {type:type.toLowerCase(), children:children};
if (strict) { ret.strict = true }
if (id) { ret.id = id }
return ret;
})(pos0, result0[1], result0[3], result0[5], result0[8]);
}
if (result0 === null) {
pos = pos0;
}
reportFailures--;
if (reportFailures === 0 && result0 === null) {
matchFailed("graph");
}
return result0;
}
function parse_stmt_list() {
var result0, result1, result2, result3, result4, result5;
var pos0, pos1, pos2, pos3;
pos0 = pos;
pos1 = pos;
result0 = parse__();
if (result0 !== null) {
pos2 = pos;
pos3 = pos;
result1 = parse_stmt();
if (result1 !== null) {
result2 = parse__();
if (result2 !== null) {
if (input.charCodeAt(pos) === 59) {
result3 = ";";
pos++;
} else {
result3 = null;
if (reportFailures === 0) {
matchFailed("\";\"");
}
}
result3 = result3 !== null ? result3 : "";
if (result3 !== null) {
result4 = parse__();
if (result4 !== null) {
result5 = parse_stmt_list();
result5 = result5 !== null ? result5 : "";
if (result5 !== null) {
result1 = [result1, result2, result3, result4, result5];
} else {
result1 = null;
pos = pos3;
}
} else {
result1 = null;
pos = pos3;
}
} else {
result1 = null;
pos = pos3;
}
} else {
result1 = null;
pos = pos3;
}
} else {
result1 = null;
pos = pos3;
}
if (result1 !== null) {
result1 = (function(offset, s, v) {return [s].concat(v||[]);})(pos2, result1[0], result1[4]);
}
if (result1 === null) {
pos = pos2;
}
result1 = result1 !== null ? result1 : "";
if (result1 !== null) {
result0 = [result0, result1];
} else {
result0 = null;
pos = pos1;
}
} else {
result0 = null;
pos = pos1;
}
if (result0 !== null) {
result0 = (function(offset, v) { return v; })(pos0, result0[1]);
}
if (result0 === null) {
pos = pos0;
}
return result0;
}
function parse_stmt() {
var result0, result1, result2, result3, result4;
var pos0, pos1;
pos0 = pos;
pos1 = pos;
result0 = parse_ID();
if (result0 !== null) {
result1 = parse__();
if (result1 !== null) {
if (input.charCodeAt(pos) === 61) {
result2 = "=";
pos++;
} else {
result2 = null;
if (reportFailures === 0) {
matchFailed("\"=\"");
}
}
if (result2 !== null) {
result3 = parse__();
if (result3 !== null) {
result4 = parse_ID();
if (result4 !== null) {
result0 = [result0, result1, result2, result3, result4];
} else {
result0 = null;
pos = pos1;
}
} else {
result0 = null;
pos = pos1;
}
} else {
result0 = null;
pos = pos1;
}
} else {
result0 = null;
pos = pos1;
}
} else {
result0 = null;
pos = pos1;
}
if (result0 !== null) {
result0 = (function(offset, left, right) { return {type:'attr_stmt', target:'graph', attr_list:[{type:'attr', id:left, eq:right}]}; })(pos0, result0[0], result0[4]);
}
if (result0 === null) {
pos = pos0;
}
if (result0 === null) {
result0 = parse_attr_stmt();
if (result0 === null) {
result0 = parse_edge_stmt();
if (result0 === null) {
result0 = parse_subgraph();
if (result0 === null) {
result0 = parse_node_stmt();
if (result0 === null) {
pos0 = pos;
result0 = parse_ID();
if (result0 !== null) {
if (input.charCodeAt(pos) === 61) {
result1 = "=";
pos++;
} else {
result1 = null;
if (reportFailures === 0) {
matchFailed("\"=\"");
}
}
if (result1 !== null) {
result2 = parse_ID();
if (result2 !== null) {
result0 = [result0, result1, result2];
} else {
result0 = null;
pos = pos0;
}
} else {
result0 = null;
pos = pos0;
}
} else {
result0 = null;
pos = pos0;
}
}
}
}
}
}
return result0;
}
function parse_attr_stmt() {
var result0, result1;
var pos0, pos1;
pos0 = pos;
pos1 = pos;
if (input.substr(pos, 5).toLowerCase() === "graph") {
result0 = input.substr(pos, 5);
pos += 5;
} else {
result0 = null;
if (reportFailures === 0) {
matchFailed("\"graph\"");
}
}
if (result0 === null) {
if (input.substr(pos, 4).toLowerCase() === "node") {
result0 = input.substr(pos, 4);
pos += 4;
} else {
result0 = null;
if (reportFailures === 0) {
matchFailed("\"node\"");
}
}
if (result0 === null) {
if (input.substr(pos, 4).toLowerCase() === "edge") {
result0 = input.substr(pos, 4);
pos += 4;
} else {
result0 = null;
if (reportFailures === 0) {
matchFailed("\"edge\"");
}
}
}
}
if (result0 !== null) {
result1 = parse_attr_list();
if (result1 !== null) {
result0 = [result0, result1];
} else {
result0 = null;
pos = pos1;
}
} else {
result0 = null;
pos = pos1;
}
if (result0 !== null) {
result0 = (function(offset, target, attr) { return {type:'attr_stmt', target:target, attr_list:attr}; })(pos0, result0[0], result0[1]);
}
if (result0 === null) {
pos = pos0;
}
return result0;
}
function parse_attr_list() {
var result0, result1, result2, result3, result4, result5;
var pos0, pos1;
pos0 = pos;
pos1 = pos;
result0 = parse__();
if (result0 !== null) {
if (input.charCodeAt(pos) === 91) {
result1 = "[";
pos++;
} else {
result1 = null;
if (reportFailures === 0) {
matchFailed("\"[\"");
}
}
if (result1 !== null) {
result2 = parse_a_list();
result2 = result2 !== null ? result2 : "";
if (result2 !== null) {
if (input.charCodeAt(pos) === 93) {
result3 = "]";
pos++;
} else {
result3 = null;
if (reportFailures === 0) {
matchFailed("\"]\"");
}
}
if (result3 !== null) {
result4 = parse__();
if (result4 !== null) {
result5 = parse_attr_list();
result5 = result5 !== null ? result5 : "";
if (result5 !== null) {
result0 = [result0, result1, result2, result3, result4, result5];
} else {
result0 = null;
pos = pos1;
}
} else {
result0 = null;
pos = pos1;
}
} else {
result0 = null;
pos = pos1;
}
} else {
result0 = null;
pos = pos1;
}
} else {
result0 = null;
pos = pos1;
}
} else {
result0 = null;
pos = pos1;
}
if (result0 !== null) {
result0 = (function(offset, list, rest) { return (list || []).concat(rest || []); })(pos0, result0[2], result0[5]);
}
if (result0 === null) {
pos = pos0;
}
return result0;
}
function parse_a_list() {
var result0, result1, result2, result3, result4, result5;
var pos0, pos1, pos2, pos3;
pos0 = pos;
pos1 = pos;
result0 = parse__();
if (result0 !== null) {
result1 = parse_ID();
if (result1 !== null) {
pos2 = pos;
pos3 = pos;
result2 = parse__();
if (result2 !== null) {
if (input.charCodeAt(pos) === 61) {
result3 = "=";
pos++;
} else {
result3 = null;
if (reportFailures === 0) {
matchFailed("\"=\"");
}
}
if (result3 !== null) {
result4 = parse__();
if (result4 !== null) {
result5 = parse_ID();
if (result5 !== null) {
result2 = [result2, result3, result4, result5];
} else {
result2 = null;
pos = pos3;
}
} else {
result2 = null;
pos = pos3;
}
} else {
result2 = null;
pos = pos3;
}
} else {
result2 = null;
pos = pos3;
}
if (result2 !== null) {
result2 = (function(offset, id) {return id})(pos2, result2[3]);
}
if (result2 === null) {
pos = pos2;
}
result2 = result2 !== null ? result2 : "";
if (result2 !== null) {
result3 = parse__();
if (result3 !== null) {
if (input.charCodeAt(pos) === 44) {
result4 = ",";
pos++;
} else {
result4 = null;
if (reportFailures === 0) {
matchFailed("\",\"");
}
}
result4 = result4 !== null ? result4 : "";
if (result4 !== null) {
result5 = parse_a_list();
result5 = result5 !== null ? result5 : "";
if (result5 !== null) {
result0 = [result0, result1, result2, result3, result4, result5];
} else {
result0 = null;
pos = pos1;
}
} else {
result0 = null;
pos = pos1;
}
} else {
result0 = null;
pos = pos1;
}
} else {
result0 = null;
pos = pos1;
}
} else {
result0 = null;
pos = pos1;
}
} else {
result0 = null;
pos = pos1;
}
if (result0 !== null) {
result0 = (function(offset, id, eq, rest) {
return [{type:'attr', id:id, eq:eq||null}].concat(rest || []);
})(pos0, result0[1], result0[2], result0[5]);
}
if (result0 === null) {
pos = pos0;
}
return result0;
}
function parse_edge_stmt() {
var result0, result1, result2;
var pos0, pos1;
pos0 = pos;
pos1 = pos;
result0 = parse_subgraph();
if (result0 === null) {
result0 = parse_node_id();
}
if (result0 !== null) {
result1 = parse_edgeRHS();
if (result1 !== null) {
result2 = parse_attr_list();
result2 = result2 !== null ? result2 : "";
if (result2 !== null) {
result0 = [result0, result1, result2];
} else {
result0 = null;
pos = pos1;
}
} else {
result0 = null;
pos = pos1;
}
} else {
result0 = null;
pos = pos1;
}
if (result0 !== null) {
result0 = (function(offset, id, rhs, attr) {
var edge_list = [id];
edge_list = edge_list.concat(rhs.map(function(v){return v.id}));
return {type:'edge_stmt', edge_list:edge_list, attr_list:attr||[]};
})(pos0, result0[0], result0[1], result0[2]);
}
if (result0 === null) {
pos = pos0;
}
return result0;
}
function parse_edgeRHS() {
var result0, result1, result2, result3, result4, result5;
var pos0, pos1;
pos0 = pos;
pos1 = pos;
result0 = parse__();
if (result0 !== null) {
if (input.substr(pos, 2) === "->") {
result1 = "->";
pos += 2;
} else {
result1 = null;
if (reportFailures === 0) {
matchFailed("\"->\"");
}
}
if (result1 === null) {
if (input.substr(pos, 2) === "--") {
result1 = "--";
pos += 2;
} else {
result1 = null;
if (reportFailures === 0) {
matchFailed("\"--\"");
}
}
}
if (result1 !== null) {
result2 = parse__();
if (result2 !== null) {
result3 = parse_subgraph();
if (result3 === null) {
result3 = parse_node_id();
}
if (result3 !== null) {
result4 = parse__();
if (result4 !== null) {
result5 = parse_edgeRHS();
result5 = result5 !== null ? result5 : "";
if (result5 !== null) {
result0 = [result0, result1, result2, result3, result4, result5];
} else {
result0 = null;
pos = pos1;
}
} else {
result0 = null;
pos = pos1;
}
} else {
result0 = null;
pos = pos1;
}
} else {
result0 = null;
pos = pos1;
}
} else {
result0 = null;
pos = pos1;
}
} else {
result0 = null;
pos = pos1;
}
if (result0 !== null) {
result0 = (function(offset, edgeop, id, rest) {return [{type:'edgeRHS', edgeop:edgeop, id:id}].concat(rest || []); })(pos0, result0[1], result0[3], result0[5]);
}
if (result0 === null) {
pos = pos0;
}
return result0;
}
function parse_node_stmt() {
var result0, result1;
var pos0, pos1;
pos0 = pos;
pos1 = pos;
result0 = parse_node_id();
if (result0 !== null) {
result1 = parse_attr_list();
result1 = result1 !== null ? result1 : "";
if (result1 !== null) {
result0 = [result0, result1];
} else {
result0 = null;
pos = pos1;
}
} else {
result0 = null;
pos = pos1;
}
if (result0 !== null) {
result0 = (function(offset, id, attr) { return {type:'node_stmt', node_id:id, attr_list:attr || []}; })(pos0, result0[0], result0[1]);
}
if (result0 === null) {
pos = pos0;
}
return result0;
}
function parse_node_id() {
var result0, result1;
var pos0, pos1;
pos0 = pos;
pos1 = pos;
result0 = parse_ID();
if (result0 !== null) {
result1 = parse_port();
result1 = result1 !== null ? result1 : "";
if (result1 !== null) {
result0 = [result0, result1];
} else {
result0 = null;
pos = pos1;
}
} else {
result0 = null;
pos = pos1;
}
if (result0 !== null) {
result0 = (function(offset, id, port) { return port ? {type:'node_id', id:id, port:port} : {type:'node_id', id:id}; })(pos0, result0[0], result0[1]);
}
if (result0 === null) {
pos = pos0;
}
return result0;
}
function parse_port() {
var result0, result1, result2, result3;
var pos0, pos1, pos2, pos3;
reportFailures++;
pos0 = pos;
pos1 = pos;
if (input.charCodeAt(pos) === 58) {
result0 = ":";
pos++;
} else {
result0 = null;
if (reportFailures === 0) {
matchFailed("\":\"");
}
}
if (result0 !== null) {
result1 = parse_ID();
if (result1 !== null) {
pos2 = pos;
pos3 = pos;
if (input.charCodeAt(pos) === 58) {
result2 = ":";
pos++;
} else {
result2 = null;
if (reportFailures === 0) {
matchFailed("\":\"");
}
}
if (result2 !== null) {
result3 = parse_compass_pt();
if (result3 !== null) {
result2 = [result2, result3];
} else {
result2 = null;
pos = pos3;
}
} else {
result2 = null;
pos = pos3;
}
if (result2 !== null) {
result2 = (function(offset, pt) {return pt})(pos2, result2[1]);
}
if (result2 === null) {
pos = pos2;
}
result2 = result2 !== null ? result2 : "";
if (result2 !== null) {
result0 = [result0, result1, result2];
} else {
result0 = null;
pos = pos1;
}
} else {
result0 = null;
pos = pos1;
}
} else {
result0 = null;
pos = pos1;
}
if (result0 !== null) {
result0 = (function(offset, id, pt) { return {type:'port', id:id, compass_pt:pt || null}; })(pos0, result0[1], result0[2]);
}
if (result0 === null) {
pos = pos0;
}
if (result0 === null) {
pos0 = pos;
pos1 = pos;
if (input.charCodeAt(pos) === 58) {
result0 = ":";
pos++;
} else {
result0 = null;
if (reportFailures === 0) {
matchFailed("\":\"");
}
}
if (result0 !== null) {
result1 = parse_compass_pt();
if (result1 !== null) {
result0 = [result0, result1];
} else {
result0 = null;
pos = pos1;
}
} else {
result0 = null;
pos = pos1;
}
if (result0 !== null) {
result0 = (function(offset, pt) {return {type:'port', compass_pt:pt||null}})(pos0, result0[1]);
}
if (result0 === null) {
pos = pos0;
}
}
reportFailures--;
if (reportFailures === 0 && result0 === null) {
matchFailed("port");
}
return result0;
}
function parse_subgraph() {
var result0, result1, result2, result3;
var pos0, pos1, pos2, pos3;
pos0 = pos;
pos1 = pos;
pos2 = pos;
pos3 = pos;
if (input.substr(pos, 8).toLowerCase() === "subgraph") {
result0 = input.substr(pos, 8);
pos += 8;
} else {
result0 = null;
if (reportFailures === 0) {
matchFailed("\"subgraph\"");
}
}
if (result0 !== null) {
result1 = parse__();
if (result1 !== null) {
result2 = parse_ID();
result2 = result2 !== null ? result2 : "";
if (result2 !== null) {
result3 = parse__();
if (result3 !== null) {
result0 = [result0, result1, result2, result3];
} else {
result0 = null;
pos = pos3;
}
} else {
result0 = null;
pos = pos3;
}
} else {
result0 = null;
pos = pos3;
}
} else {
result0 = null;
pos = pos3;
}
if (result0 !== null) {
result0 = (function(offset, id) {return id ? {type:'subgraph', id:id} : {type:'subgraph'}})(pos2, result0[2]);
}
if (result0 === null) {
pos = pos2;
}
result0 = result0 !== null ? result0 : "";
if (result0 !== null) {
if (input.charCodeAt(pos) === 123) {
result1 = "{";