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rrdgraph.js
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/*******************************************************************************
* This file is part of OpenNMS(R).
*
* Copyright (C) 2007-2011 The OpenNMS Group, Inc.
* OpenNMS(R) is Copyright (C) 1999-2011 The OpenNMS Group, Inc.
*
* OpenNMS(R) is a registered trademark of The OpenNMS Group, Inc.
*
* OpenNMS(R) is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published
* by the Free Software Foundation, either version 3 of the License,
* or (at your option) any later version.
*
* OpenNMS(R) is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with OpenNMS(R). If not, see:
* http://www.gnu.org/licenses/
*
* For more information contact:
* OpenNMS(R) Licensing <[email protected]>
* http://www.opennms.org/
* http://www.opennms.com/
******************************************************************************/
var RRDGraph = window['RRDGraph'] = {};
/*******************************************************************************
* Data/config grabber
******************************************************************************/
(function () {
var get = RRDGraph['get'] = {};
get['config'] = function (src) { // {resourceId, report}
// TODO: decide how to get this from the server
return '';
};
get['data'] = function () { // {resourceId, report, start, end}
// TODO: decide how to get this from the server
return {};
};
})();
/*******************************************************************************
* RPN Parse
******************************************************************************/
(function () {
var RPNParser = RRDGraph.RPNParser = function () {
};
var constant = function(term) {
var f = function(i, context) { return { v:+term }; };
f.term = term;
return f;
};
var ternaryOperator = function(f) {
return function(rpn, defs) {
var c = parseTerm(rpn, defs);
var b = parseTerm(rpn, defs);
var a = parseTerm(rpn, defs);
var result = function(i, context) {
var valA = a(i, context);
var valB = b(i, context);
var valC = c(i, contet);
return { t:valA.t||valB.t||valC.t, v:f(valA. v, valB.v, valC.v )};
};
return result;
};
};
var binaryOperator = function(f) {
return function(rpn, defs) {
var b = parseTerm(rpn, defs);
var a = parseTerm(rpn, defs);
var result = function(i, context) {
var valA = a(i, context);
var valB = b(i, context);
return { t:valA.t||valB.t, v:f( valA.v, valB.v )};
};
return result;
};
};
var unaryOperator = function(f) {
return function(rpn, defs) {
var a = parseTerm(rpn, defs);
var result = function(i, context) {
var valA = a(i, context);
return { t:valA.t, v:f( valA.v ) };
};
return result;
};
};
var RPN_OPERATORS = {
'LT' : binaryOperator (function (a, b) { return +(a < b); }),
'GT' : binaryOperator (function (a, b) { return +(a > b); }),
'LE' : binaryOperator (function (a, b) { return +(a <= b); }),
'GE' : binaryOperator (function (a, b) { return +(a >= b); }),
'EQ' : binaryOperator (function (a, b) { return +(a === b); }),
'NE' : binaryOperator (function (a, b) { return +(a !== b); }),
'UN' : unaryOperator (function (a) { return +(isNaN(a)); }),
'ISINF' : unaryOperator (function (a) { return +(a == Number.POSITIVE_INFINITY || a == Number.NEGATIVE_INFINITY); }),
'MIN' : binaryOperator (function (a, b) { return Math.min(a, b); }),
'MAX' : binaryOperator (function (a, b) { return Math.max(a, b); }),
'+' : binaryOperator (function (a, b) { return a + b; }),
'*' : binaryOperator (function (a, b) { return a * b; }),
'-' : binaryOperator (function (a, b) { return a - b; }),
'/' : binaryOperator (function (a, b) { return a / b; }),
'%' : binaryOperator (function (a, b) { return a % b; }),
'ADDNAN' : binaryOperator (function (a, b) { return isNaN(a) ? b : (isNaN(b) ? a : a + b); }),
'SIN' : unaryOperator (function (a) { return Math.sin(a); }),
'COS' : unaryOperator (function (a) { return Math.cos(a); }),
'LOG' : unaryOperator (function (a) { return Math.log(a); }),
'EXP' : unaryOperator (function (a) { return Math.exp(a); }),
'SQRT' : unaryOperator (function (a) { return Math.sqrt(a); }),
'ATAN' : unaryOperator (function (a) { return Math.atan(a); }),
'ATAN2' : unaryOperator (function (a, b) { return Math.atan2(a, b); }),
'FLOOR' : unaryOperator (function (a) { return Math.floor(a); }),
'CEIL' : unaryOperator (function (a) { return Math.ceil(a); }),
'DEG2RAD': unaryOperator (function (a) { return a * Math.PI / 180.0; }),
'RAD2DEG': unaryOperator (function (a) { return a * 180 / Math.PI; }),
'ABS' : unaryOperator (function (a) { return Math.abs(a); }),
'IF' : ternaryOperator(function (a, b, c) { return a ? b : c; }),
'LIMIT' : ternaryOperator(function (a, b, c) { return (b <= a && a <= c) ? a : NaN; }),
};
function parseTerm(rpn, defs) {
var term = rpn.pop();
if (!isNaN(term)) {
return constant(term);
} else if (defs[term]) {
return defs[term];
} else if (RPN_OPERATORS[term]) {
return RPN_OPERATORS[term](rpn, defs);
} else {
console.log("Unexpected operator " + term);
throw "Unexpected operator " + term;
}
};
RPNParser.prototype.parse = function (rpnStr, defs) {
var rpn = rpnStr.split(',');
return parseTerm(rpn, defs);
};
RPNParser.prototype.createDef = function(vname, type, value, defs) {
function f(i, context) { return context[vname].data[i]; };
f.vname = vname;
f.type = type;
f.value = value;
return f;
};
RPNParser.prototype.createCDef = function(vname, type, value, defs) {
var f = this.parse(value, defs);
f.vname = vname;
f.type = type;
f.value = value;
return f;
};
})();
/*******************************************************************************
* The config
******************************************************************************/
(function () {
var tokenize = function (str) {
var delined = str.replace(/\\\n/g, ' ');
var regex = /[^\s"]*["]+?[^"]+?["]+?[^\s"']*|[^\s"]+/g;
var tokens = [];
var match;
while (match = regex.exec(delined)) {
tokens.push(match[0].replace(/"/g, ''));
}
return tokens;
};
var regex = {
def: /^[CV]?DEF:/,
graph: /^PRINT|^GPRINT|^COMMENT|^VRULE|^HRULE|^LINE|^AREA|^TICK|^SHIFT|^TEXTALIGN|^STACK/,
print: /^[G]?PRINT/,
line: /^LINE/,
split: /\\%%SPLIT%%/g,
colon: /:/g
};
var short_tags = {
's': 'start', 'e': 'end', 'S': 'step', 't': 'title', 'v': 'vertical-label',
'w': 'width', 'h': 'height', 'j': 'only-graph', 'D': 'full-size-mode',
'u': 'upper-limit', 'l': 'lower-limit', 'r': 'rigid', 'A': 'alt-autoscale',
'J': 'alt-autoscale-min', 'M': 'alt-autoscale-max', 'N': 'no-gridfit',
'x': 'x-grid', 'y': 'y-grid', 'Y': 'alt-y-grid', 'o': 'logarithmic',
'X': 'units-exponent', 'L': 'units-length', 'g': 'no-legend',
'F': 'force-rules-legend', 'c': 'color', 'm': 'zoom', 'n': 'font',
'P': 'pango-markup', 'G': 'graph-render-mode', 'E': 'slope-mode',
'T': 'tabwidth', 'b': 'base', 'W': 'watermark'
};
var cast_options = function (options, cast, option_names) {
for (var o in option_names) {
var option = option_names[o];
options[option] = cast(options[option]);
}
};
var printType = function(tokens) {
this.type = tokens[0].toLowerCase();
this.vname = tokens[1];
if (tokens.length === 3) {
this.format = tokens[2];
} else {
this.format = tokens[3];
this.cf = tokens[2];
}
};
var lineType = function(tokens) {
this.type = "line";
if (tokens[0].length > 4) {
this.width = parseFloat(tokens[0].slice(4));
} else {
this.width = 1;
}
var key_color = tokens[1].split('#');
this.value = key_color[0];
if (key_color.length === 2) {
this.color = key_color[1];
}
if (tokens.length == 3 && tokens[2] === 'STACK') {
this.stack = true;
} else if (tokens.length >= 3) { // legend
this.legend = tokens[2];
for (var st = 3, sl = tokens.length; st < sl; ++st) {
if (tokens[st] === 'STACK') {
this.stack = true;
} else { // dashes or dash-offset
var key_value = tokens[st].split('=');
if (key_value[0] === 'dashes') {
if (key_value.length === 2) {
this.dashes = key_value[1].replace(',', ' ');
} else {
this.dashes = '5 5';
}
} else { // dash-offset
this.dash_offset = tokens[st].split('=')[1];
}
}
}
}
};
var types = {
gprint : printType,
print : printType,
comment : function(tokens){
this.type = 'comment';
this.text = tokens[1];
},
shift : function(tokens) {
this.type = 'shift';
this.vname = tokens[1];
this.offset = tokens[2];
},
textalign:function(tokens) {
this.type = 'textalign';
this.textalign = tokens[1];
},
tick : function(tokens) {
this.type = 'tick';
var vname_color = tokens[1].split('#');
this.value = vname_color[0];
this.color = vname_color[1];
if (tokens.length > 3) {
this.legend = subtokens[3];
}
this.fraction = 0.1;
if (tokens.length >= 3) {
this.fraction = +subtokens[2];
}
},
line : lineType,
vrule:function(tokens) {
this.type = tokens[0].toLowerCase();
var key_color = tokens[1].split('#');
this.time = new Date(+key_color[0]);
if (key_color.length === 2) {
this.color = key_color[1];
}
if (tokens.length == 3 && tokens[2] === 'STACK') {
this.stack = true;
} else if (tokens.length >= 3) { // legend
this.legend = tokens[2];
for (var st = 3, sl = tokens.length; st < sl; ++st) {
if (tokens[st] === 'STACK') {
this.stack = true;
} else { // dashes or dash-offset
var key_value = tokens[st].split('=');
if (key_value[0] === 'dashes') {
if (key_value.length === 2) {
this.dashes = key_value[1].replace(',', ' ');
} else {
this.dashes = '5 5';
}
} else { // dash-offset
this.dash_offset = tokens[st].split('=')[1];
}
}
}
}
},
hrule:function(tokens){
this.type = tokens[0].toLowerCase();
var key_color = tokens[1].split('#');
this.value = key_color[0];
if (key_color.length === 2) {
this.color = key_color[1];
}
if (tokens.length == 3 && tokens[2] === 'STACK') {
this.stack = true;
} else if (tokens.length >= 3) { // legend
this.legend = tokens[2];
for (var st = 3, sl = tokens.length; st < sl; ++st) {
if (tokens[st] === 'STACK') {
this.stack = true;
} else { // dashes or dash-offset
var key_value = tokens[st].split('=');
if (key_value[0] === 'dashes') {
if (key_value.length === 2) {
this.dashes = key_value[1].replace(',', ' ');
} else {
this.dashes = '5 5';
}
} else { // dash-offset
this.dash_offset = tokens[st].split('=')[1];
}
}
}
}
},
area : function(tokens) {
this.type = tokens[0].toLowerCase();
var key_color = tokens[1].split('#');
this.value = key_color[0];
if (key_color.length === 2) {
this.color = key_color[1];
}
if (tokens.length == 3 && tokens[2] === 'STACK') {
this.stack = true;
} else if (tokens.length >= 3) { // legend
this.legend = tokens[2];
for (var st = 3, sl = tokens.length; st < sl; ++st) {
if (tokens[st] === 'STACK') {
this.stack = true;
} else { // dashes or dash-offset
var key_value = tokens[st].split('=');
if (key_value[0] === 'dashes') {
if (key_value.length === 2) {
this.dashes = key_value[1].replace(',', ' ');
} else {
this.dashes = '5 5';
}
} else { // dash-offset
this.dash_offset = tokens[st].split('=')[1];
}
}
}
}
},
stack:function(tokens){
this.type = "area";
var key_color = tokens[1].split('#');
this.value = key_color[0];
if (key_color.length === 2) {
this.color = key_color[1];
}
if (tokens.length == 3 && tokens[2] === 'STACK') {
this.stack = true;
} else if (tokens.length >= 3) { // legend
this.legend = tokens[2];
for (var st = 3, sl = tokens.length; st < sl; ++st) {
if (tokens[st] === 'STACK') {
this.stack = true;
} else { // dashes or dash-offset
var key_value = tokens[st].split('=');
if (key_value[0] === 'dashes') {
if (key_value.length === 2) {
this.dashes = key_value[1].replace(',', ' ');
} else {
this.dashes = '5 5';
};
} else { // dash-offset
this.dash_offset = tokens[st].split('=')[1];
};
};
};
}
this.stack = true;
}
};
var parser = new RRDGraph.RPNParser();
var parseDef = function(subtokens, defs) {
console.log("parsing " + subtokens);
console.log("defs");
console.log(defs);
var token = subtokens[0];
if (token.charAt(0) === 'D') { // DEF
var type = 'data';
var value = {};
console.log(subtokens[1]);
var name_rrd = subtokens[1].split('=');
var vname = name_rrd[0];
value.rrd = name_rrd[1];
value.ds_name = subtokens[2];
value.cf = subtokens[3];
for (var st = 4, sl = subtokens.length; st < sl; ++st) {
var st_kv = subtokens[st].split('=');
value[st_kv[0]] = st_kv[1];
}
console.log("vname is '" + vname + "'");
return parser.createDef(vname, type, value, defs);
} else {
var type = (token.charAt(0) === 'C') ? 'calc' : 'value';
var secondToken = subtokens[1];
var split_at = secondToken.indexOf('=');
var name = secondToken.slice(0, split_at);
var value = secondToken.slice(split_at + 1);
console.log(defs);
return parser.createCDef(name, type, value, defs);
}
};
var parse = function (config_string) {
var result = {
options: {
'start' : +new Date() - 1200000,
'end' : +new Date(),
'step' : 1,
'title' : '',
'vertical-label' : '',
'width' : 400,
'height' : 100,
'full-size-mode' : false,
'only-graph' : false,
'upper-limit' : null,
'lower-limit' : null,
'rigid' : false,
'alt-autoscale' : false,
'alt-autoscale-min' : false,
'alt-autoscale-max' : false,
'no-gridfit' : true,
'x-grid' : '', // TODO: reasonable default
'y-grid' : '', // TODO: reasonable default
'alt-y-grid' : false,
'logarithmic' : false,
'units-exponent' : 0, // TODO: reasonable default
'units-length' : 0,
'units' : 'si',
'right-axis' : '1:1', // scale:shift
'right-axis-label' : '',
'right-axis-format' : '',
'no-legend' : false,
'force-rules-legend': false,
'legend-position' : 'south',
'legend-direction' : 'topdown',
'color' : '', // TODO: reasonable default
'grid-dash' : '1:1',
'border' : 2,
'dynamic-labels' : false,
'zoom' : 1,
'font' : {
'title' : {
'family': 'monospace',
'size': 13
},
'axis' : {
'family': 'monospace',
'size': 10
},
'unit' : {
'family': 'monospace',
'size': 10
},
'legend' : {
'family': 'monospace',
'size': 11
},
'watermark' : {
'family': 'monospace',
'size': 8
}
},
'pango-markup' : false,
'graph-render-mode' : 'normal',
'slope-mode' : false,
'tabwidth' : 40,
'base' : 1000,
'watermark' : '',
/* RRDGRAPH-js only options */
'compress' : true
},
defs: {
data: {},
value: {},
calc: {},
all:{},
},
graphs: []
};
var tokens = tokenize(config_string);
for (var t = 0, l = tokens.length; t < l; ++t) {
var token = tokens[t];
var element;
if (regex.def.test(token)) {
var subtokens = token.split(':');
var def = parseDef(subtokens, result.defs.all);
console.log("def is");
console.log(def);
result.defs[def.type][def.vname] = def.value;
result.defs.all[def.vname] = def;
} else if (token.charAt(0) === '-' && token.length > 1) {
var n_dashes = (token.charAt(1) === '-') ? 2 : 1;
var option = token.slice(n_dashes);
var value = true;
var key_value = option.split('=');
if (key_value.length > 1) {
option = key_value[0];
value = key_value[1];
} else if (tokens[t + 1].charAt(0) !== '-' && !regex.def.test(tokens[t + 1])) {
value = tokens[++t];
}
if (option in short_tags) option = short_tags[option];
if (option === 'font') {
var font = value.split(':');
var size = parseInt(font[1]);
if (size) {
result.options[option][font[0].toLowerCase()].size = size;
}
if (font[2]) {
result.options[option][font[0].toLowerCase()].family = font[2];
}
} else {
result.options[option] = value;
}
} else if (regex.graph.test(token)) {
token = token.replace(regex.colon, '%%SPLIT%%');
token = token.replace(regex.split, ':');
var subtokens = token.split('%%SPLIT%%');
if (regex.line.test(subtokens[0])) {
element = new types['line'](subtokens);
} else {
element = new types[subtokens[0].toLowerCase()](subtokens);
}
if ('color' in element) { // extract opacity
if (element.color.length === 6) { // just color, default opacity
element.color = '#' + element.color;
element.opacity = 1.0;
} else {
var opacity_hex = parseInt(element.color.slice(6), 16);
element.color = '#' + element.color.slice(0, 6);
element.opacity = opacity_hex / 255.0;
}
}
if (element) {
result.graphs.push(element);
}
}
}
cast_options(result.options, parseInt, [
'step', 'width', 'height', 'units-exponent', 'units-length', 'border',
'tabwidth', 'base', 'start', 'end'
]);
cast_options(result.options, parseFloat, ['upper-limit', 'lower-limit', 'zoom']);
result.options['grid-dash'] = result.options['grid-dash'].replace(':', ' ');
return result;
};
legend = [
{content: [], align: 'left'}
];
var NO_FOLLOWING_SPACES = '\\n\\l\\r\\c\\j\\g\\u';
var splitElementString = function (s) {
var at = 0;
var result = [];
while (s.length) {
var next_slash = s.indexOf('\\', at);
if (next_slash !== -1) {
if (s.charAt(next_slash + 1) !== '\\') {
result.push(s.slice(0, next_slash));
result.push(s.slice(next_slash, next_slash + 2));
s = s.slice(next_slash + 2);
at = 0;
} else {
at = next_slash + 2;
}
} else {
result.push(s);
break;
}
}
// two spaces after every element unless \g
var last = result.length - 1;
if (NO_FOLLOWING_SPACES.indexOf(result[last]) === -1) {
result[last] = result[last] + ' ';
}
return result;
};
var LINE_ENDS = '\\n\\l\\r\\c\\j';
var ALIGN = {
'\\n': 'left',
'\\l': 'left',
'\\r': 'right',
'\\c': 'center',
'\\j': 'justify'
};
var PRINT_FORMAT = /%(\d*)[.]?(\d*)l([ef]{1})[%]?([sS]?)/;
var createLegendTemplate = function (config) {
config.legend = [];
var next_line = {content: [], align: 'left', position: 0};
var graphs = config.graphs;
for (var i = 0, len = graphs.length; i < len; ++i) {
var g = graphs[i];
if (g.type === 'comment') {
var parts = splitElementString(g.text);
while (parts.length) {
var part = parts.shift();
if (LINE_ENDS.indexOf(part) !== -1) {
next_line.align = ALIGN[part];
config.legend.push(next_line);
next_line = {content: [], align: 'left', position: next_line.position + 1};
} else if (part === '\\u') {
next_line.position--;
} else {
next_line.content.push(part);
}
}
} else if (g.type === 'line' || g.type === 'area' || g.type === 'tick' ||
g.type === 'hrule' || g.type === 'vrule') {
if (g.color && g.legend) {
next_line.content.push({type: 'box', color: g.color});
var parts = splitElementString(g.legend);
while (parts.length) {
var part = parts.shift();
if (LINE_ENDS.indexOf(part) !== -1) {
next_line.align = ALIGN[part];
config.legend.push(next_line);
next_line = {content: [], align: 'left', position: next_line.position + 1};
} else if (part === '\\u') {
next_line.position--;
} else {
next_line.content.push(part);
}
}
}
} else if (g.type === 'gprint') {
var vname = g.vname;
if (!(vname in config.defs.value)) { // DEF or CDEF: old style
// we need to define an internal VDEF
var cf = g.cf;
cf = cf.replace('MAX', 'MAXIMUM');
cf = cf.replace('MIN', 'MINIMUM');
vname = '_internal_' + g.vname + '_' + cf;
config.defs.value[vname] = g.vname + ',' + cf;
}
var parts = splitElementString(g.format);
while (parts.length) {
var part = parts.shift();
if (LINE_ENDS.indexOf(part) !== -1) {
next_line.align = ALIGN[part];
config.legend.push(next_line);
next_line = {content: [], align: 'left', position: next_line.position + 1};
} else if (part === '\\u') {
next_line.position--;
} else {
part = part.replace(' %s', '%s');
part = part.replace(' %S', '%S');
var r = PRINT_FORMAT.exec(part);
if (r !== null) {
if (r.index > 0) {
var text = part.slice(0, r.index);
text = text.replace('%%', '%');
next_line.content.push(text);
}
var next_var = {vname: vname};
if (r[1] !== "") {
next_var.width = +r[1];
}
if (r[2] !== "") {
next_var.decimals = +r[2];
}
if (r[3] === 'e') {
next_var.type = 'exponential';
} else {
next_var.type = 'float';
}
if (r[4] === 's') {
next_var.si = true;
} else if (r[4] === 'S') {
next_var.si = 'same';
}
next_line.content.push(next_var);
var end = r.index + r[0].length;
if (end < part.length - 1) {
var text = part.slice(end);
text = text.replace('%%', '%');
next_line.content.push(text);
}
} else {
throw "bad format for GPRINT in '" + g.format + "'";
}
}
}
}
}
if (next_line.content.length) {
next_line.align = 'left';
config.legend.push(next_line);
next_line = {content: [], align: 'left', position: next_line.position + 1};
}
};
RRDGraph.Config = function (src, config_string) {
if (src) {
config_string = RRDGraph.get.config(src);
}
var config = parse(config_string);
this.options = config.options;
this.defs = config.defs;
this.graphs = config.graphs;
createLegendTemplate(this);
};
})();
/*******************************************************************************
* The data class
******************************************************************************/
(function () {
var Data = RRDGraph.Data = function (src, config) {
this.src = src;
this.config = config;
this.listeners = [];
this.setup();
};
Data.prototype.setup = function () {
this.data = {
arrays: {}, // DEFS and CDEFS
values: {} // VDEFS
};
this.affects_extremes = {};
this.extremes = {
x: {min: Number.POSITIVE_INFINITY, max: Number.NEGATIVE_INFINITY},
y: {min: Number.POSITIVE_INFINITY, max: Number.NEGATIVE_INFINITY}
};
for (var def in this.config.defs.data) {
this.data.arrays[def] = [];
}
for (var cdef in this.config.defs.calc) {
this.data.arrays[cdef] = [];
}
for (var vdef in this.config.defs.value) {
this.data.values[vdef] = {t: NaN, v: NaN};
}
// defs affect extremes only if they are used in a LINE or AREA
// TODO: STACKed values
for (var vname in this.data.arrays) {
for (var g in this.config.graphs) {
var graph = this.config.graphs[g];
if (graph.value === vname && (graph.type === 'line' || graph.type === 'area') ) {
this.affects_extremes[vname] = true;
}
// if (graph.value === vname && (graph.type === 'line' || graph.type === 'area') &&
// !graph.stack) {
// this.affects_extremes[vname] = true;
// }
}
}
};
Data.prototype.addListener = function (graph) {
this.listeners.push(graph);
};
Data.prototype.notifyUpdate = function () {
for (var l = 0, len = this.listeners.length; l < len; ++l) {
this.listeners[l].update();
}
};
/* RPN --------------------------------------------------------------------*/
var operation = {
'LT': function (a, b) { return +(a < b); },
'GT': function (a, b) { return +(a > b); },
'LE': function (a, b) { return +(a <= b); },
'GE': function (a, b) { return +(a >= b); },
'EQ': function (a, b) { return +(a === b); },
'NE': function (a, b) { return +(a !== b); },
'UN': function (a) { return +(isNaN(a)); },
'ISINF': function (a) { return +(a == Number.POSITIVE_INFINITY || a == Number.NEGATIVE_INFINITY); },
'MIN': function (a, b) {
if (isNaN(a) || isNaN(a)) {
return NaN;
} if (a > b) {
return b;
} else {
return a;
}
},
'MAX': function (a, b) {
if (isNaN(a) || isNaN(a)) {
return NaN;
} if (a > b) {
return a;
} else {
return b;
}
},
'+': function (a, b) { return a + b; },
'*': function (a, b) { return a * b; },
'-': function (a, b) { return a - b; },
'/': function (a, b) { return a / b; },
'%': function (a, b) { return a % b; },
'ADDNAN': function (a, b) {
var a_is_nan = isNaN(a);
var b_is_nan = isNaN(b);
if (!a_is_nan && b_is_nan) {
return a;
} else if (a_is_nan && !b_is_nan) {
return b;
} else if (a_is_nan && b_is_nan) {
return NaN;
} else {
return a + b;
}
},
'SIN': function (a) { return Math.sin(a); },
'COS': function (a) { return Math.cos(a); },
'LOG': function (a) { return Math.log(a); },
'EXP': function (a) { return Math.exp(a); },
'SQRT': function (a) { return Math.sqrt(a); },
'ATAN': function (a) { return Math.atan(a); },
'ATAN2': function (a, b) { return Math.atan2(a, b); },
'FLOOR': function (a) { return Math.floor(a); },
'CEIL': function (a) { return Math.ceil(a); },
'DEG2RAD': function (a) { return a * Math.PI / 180.0; },
'RAD2DEG': function (a) { return a * 180 / Math.PI; },
'ABS': function (a) { return Math.abs(a); },
'IF': function (stack) {
var c = stack.pop();
var b = stack.pop();
var a = stack.pop();
var a_is_number = !(a instanceof Array);
var b_is_number = !(b instanceof Array);
var c_is_number = !(c instanceof Array);
if (a_is_number) {
if (a !== 0) {
stack.push(b);
} else {
stack.push(c);
}
} else {
var result = [];
if (b_is_number && c_is_number) {
for (var i = 0, l = a.length; i < l; ++i) {
result[i] = {
t: a[i].t,
v: (a[i].v !== 0) ? b : c
};
}
} else if (b_is_number && !c_is_number) {
for (var i = 0, l = a.length; i < l; ++i) {
result[i] = {
t: a[i].t,
v: (a[i].v !== 0) ? b : c[i].v
};
}
} else if (!b_is_number && c_is_number) {
for (var i = 0, l = a.length; i < l; ++i) {
result[i] = {
t: a[i].t,
v: (a[i].v !== 0) ? b[i].v : c
};
}
} else {
for (var i = 0, l = a.length; i < l; ++i) {
result[i] = {
t: a[i].t,
v: (a[i].v !== 0) ? b[i].v : c[i].v
};
}
}
stack.push(result);
}
},