2012-08-06 09:46:27 +00:00
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/*
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* py.js helpers and setup
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*/
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openerp.web.pyeval = function (instance) {
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instance.web.pyeval = {};
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var asJS = function (arg) {
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if (arg instanceof py.object) {
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return arg.toJSON();
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}
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return arg;
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};
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var datetime = new py.object();
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datetime.datetime = new py.type(function datetime() {
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throw new Error('datetime.datetime not implemented');
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});
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var date = datetime.date = new py.type(function date(y, m, d) {
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if (y instanceof Array) {
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d = y[2];
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m = y[1];
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y = y[0];
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}
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this.year = asJS(y);
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this.month = asJS(m);
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this.day = asJS(d);
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}, py.object, {
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strftime: function (args) {
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var f = asJS(args[0]), self = this;
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return new py.str(f.replace(/%([A-Za-z])/g, function (m, c) {
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switch (c) {
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case 'Y': return self.year;
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case 'm': return _.str.sprintf('%02d', self.month);
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case 'd': return _.str.sprintf('%02d', self.day);
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}
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throw new Error('ValueError: No known conversion for ' + m);
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}));
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}
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});
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date.__getattribute__ = function (name) {
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if (name === 'today') {
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return date.today;
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}
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throw new Error("AttributeError: object 'date' has no attribute '" + name +"'");
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};
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date.today = new py.def(function () {
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var d = new Date();
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return new date(d.getUTCFullYear(), d.getUTCMonth() + 1, d.getUTCDate());
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});
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datetime.time = new py.type(function time() {
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throw new Error('datetime.time not implemented');
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});
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var time = new py.object();
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time.strftime = new py.def(function (args) {
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return date.today.__call__().strftime(args);
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});
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var relativedelta = new py.type(function relativedelta(args, kwargs) {
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if (!_.isEmpty(args)) {
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throw new Error('Extraction of relative deltas from existing datetimes not supported');
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}
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this.ops = kwargs;
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}, py.object, {
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__add__: function (other) {
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if (!(other instanceof datetime.date)) {
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return py.NotImplemented;
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}
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// TODO: test this whole mess
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var year = asJS(this.ops.year) || asJS(other.year);
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if (asJS(this.ops.years)) {
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year += asJS(this.ops.years);
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}
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var month = asJS(this.ops.month) || asJS(other.month);
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if (asJS(this.ops.months)) {
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month += asJS(this.ops.months);
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// FIXME: no divmod in JS?
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while (month < 1) {
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year -= 1;
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month += 12;
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}
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while (month > 12) {
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year += 1;
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month -= 12;
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}
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}
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var lastMonthDay = new Date(year, month, 0).getDate();
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var day = asJS(this.ops.day) || asJS(other.day);
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if (day > lastMonthDay) { day = lastMonthDay; }
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var days_offset = ((asJS(this.ops.weeks) || 0) * 7) + (asJS(this.ops.days) || 0);
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if (days_offset) {
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day = new Date(year, month-1, day + days_offset).getDate();
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}
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// TODO: leapdays?
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// TODO: hours, minutes, seconds? Not used in XML domains
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// TODO: weekday?
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return new datetime.date(year, month, day);
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},
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__radd__: function (other) {
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return this.__add__(other);
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},
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__sub__: function (other) {
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if (!(other instanceof datetime.date)) {
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return py.NotImplemented;
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}
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// TODO: test this whole mess
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var year = asJS(this.ops.year) || asJS(other.year);
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if (asJS(this.ops.years)) {
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year -= asJS(this.ops.years);
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}
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var month = asJS(this.ops.month) || asJS(other.month);
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if (asJS(this.ops.months)) {
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month -= asJS(this.ops.months);
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// FIXME: no divmod in JS?
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while (month < 1) {
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year -= 1;
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month += 12;
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}
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while (month > 12) {
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year += 1;
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month -= 12;
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}
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}
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var lastMonthDay = new Date(year, month, 0).getDate();
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var day = asJS(this.ops.day) || asJS(other.day);
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if (day > lastMonthDay) { day = lastMonthDay; }
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var days_offset = ((asJS(this.ops.weeks) || 0) * 7) + (asJS(this.ops.days) || 0);
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if (days_offset) {
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day = new Date(year, month-1, day - days_offset).getDate();
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}
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// TODO: leapdays?
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// TODO: hours, minutes, seconds? Not used in XML domains
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// TODO: weekday?
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return new datetime.date(year, month, day);
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},
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__rsub__: function (other) {
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return this.__sub__(other);
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}
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});
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var eval_contexts = function (contexts, evaluation_context) {
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evaluation_context = evaluation_context || {};
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return _(contexts).reduce(function (result_context, ctx) {
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// __eval_context evaluations can lead to some of `contexts`'s
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// values being null, skip them as well as empty contexts
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if (_.isEmpty(ctx)) { return result_context; }
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var evaluated = ctx;
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switch(ctx.__ref) {
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case 'context':
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evaluated = py.eval(ctx.__debug, evaluation_context);
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break;
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case 'compound_context':
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var eval_context = eval_contexts([ctx.__eval_context]);
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evaluated = eval_contexts(
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ctx.__contexts, _.extend({}, evaluation_context, eval_context));
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break;
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}
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// add newly evaluated context to evaluation context for following
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// siblings
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_.extend(evaluation_context, evaluated);
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return _.extend(result_context, evaluated);
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2012-10-05 13:12:05 +00:00
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}, _.extend({}, instance.session.user_context));
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2012-08-06 09:46:27 +00:00
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};
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var eval_domains = function (domains, evaluation_context) {
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var result_domain = [];
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_(domains).each(function (domain) {
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switch(domain.__ref) {
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case 'domain':
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result_domain.push.apply(
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result_domain, py.eval(domain.__debug, evaluation_context));
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break;
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case 'compound_domain':
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var eval_context = eval_contexts([domain.__eval_context]);
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result_domain.push.apply(
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result_domain, eval_domains(
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domain.__domains, _.extend(
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{}, evaluation_context, eval_context)));
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break;
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default:
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result_domain.push.apply(result_domain, domain);
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}
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});
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return result_domain;
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};
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var eval_groupbys = function (contexts, evaluation_context) {
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var result_group = [];
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_(contexts).each(function (ctx) {
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var group;
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var evaluated = ctx;
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switch(ctx.__ref) {
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case 'context':
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2012-10-05 14:28:08 +00:00
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evaluated = py.eval(ctx.__debug, evaluation_context);
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2012-08-06 09:46:27 +00:00
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break;
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case 'compound_context':
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var eval_context = eval_contexts([ctx.__eval_context]);
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evaluated = eval_contexts(
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ctx.__contexts, _.extend({}, evaluation_context, eval_context));
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break;
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}
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group = evaluated.group_by;
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if (!group) { return; }
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if (typeof group === 'string') {
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result_group.push(group);
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} else if (group instanceof Array) {
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result_group.push.apply(result_group, group);
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} else {
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throw new Error('Got invalid groupby {{'
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+ JSON.stringify(group) + '}}');
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}
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_.extend(evaluation_context, evaluated);
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});
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return result_group;
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};
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instance.web.pyeval.context = function () {
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return {
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2012-10-05 13:12:05 +00:00
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uid: new py.float(instance.session.uid),
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2012-08-06 09:46:27 +00:00
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datetime: datetime,
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time: time,
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relativedelta: relativedelta,
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current_date: date.today.__call__().strftime(['%Y-%m-%d']),
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};
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};
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/**
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* @param {String} type "domains", "contexts" or "groupbys"
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* @param {Array} object domains or contexts to evaluate
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* @param {Object} [context] evaluation context
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*/
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instance.web.pyeval.eval = function (type, object, context) {
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if (!context) { context = instance.web.pyeval.context()}
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switch(type) {
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case 'contexts': return eval_contexts(object, context);
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case 'domains': return eval_domains(object, context);
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case 'groupbys': return eval_groupbys(object, context);
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}
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throw new Error("Unknow evaluation type " + type)
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};
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};
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