[ADD] evaluator proof of concept: colors in list rows
bzr revid: xmo@openerp.com-20110929144036-7u2w6pf6lwkvzck0
This commit is contained in:
Xavier Morel
commit
3cde15fe01
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@ -27,6 +27,7 @@
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"static/lib/underscore/underscore.js",
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"static/lib/underscore/underscore.string.js",
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"static/lib/labjs/LAB.src.js",
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"static/lib/py.parse/lib/py.js",
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"static/src/js/boot.js",
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"static/src/js/core.js",
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"static/src/js/dates.js",
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@ -0,0 +1,5 @@
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repo: 076b192d0d8ab2b92d1dbcfa3da055382f30eaea
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node: 87fb1b67d6a13f10a1a328104ee4d4b2c36801ec
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branch: default
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latesttag: 0.2
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latesttagdistance: 1
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@ -0,0 +1 @@
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Parser and evaluator of Python expressions
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@ -0,0 +1,14 @@
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* Parser
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since parsing expressions, try with a pratt parser
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http://journal.stuffwithstuff.com/2011/03/19/pratt-parsers-expression-parsing-made-easy/
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http://effbot.org/zone/simple-top-down-parsing.htm
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Evaluator
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---------
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* Stop busyworking trivial binary operator
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* Make it *trivial* to build Python type-wrappers
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* Implement Python's `data model
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protocols<http://docs.python.org/reference/datamodel.html#basic-customization>`_
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for *all* supported operations, optimizations can come later
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* Automatically type-wrap everything (for now anyway)
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@ -0,0 +1,546 @@
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var py = {};
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(function (exports) {
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var NUMBER = /^\d$/,
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NAME_FIRST = /^[a-zA-Z_]$/,
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NAME = /^[a-zA-Z0-9_]$/;
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var create = function (o, props) {
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function F() {}
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F.prototype = o;
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var inst = new F;
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for(var name in props) {
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if(!props.hasOwnProperty(name)) { continue; }
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inst[name] = props[name];
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}
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return inst;
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};
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var symbols = {};
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var comparators = {};
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var Base = {
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nud: function () { throw new Error(this.id + " undefined as prefix"); },
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led: function (led) { throw new Error(this.id + " undefined as infix"); },
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toString: function () {
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if (this.id === '(constant)' || this.id === '(number)' || this.id === '(name)' || this.id === '(string)') {
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return [this.id.slice(0, this.id.length-1), ' ', this.value, ')'].join('');
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} else if (this.id === '(end)') {
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return '(end)';
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} else if (this.id === '(comparator)' ) {
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var repr = ['(comparator', this.expressions[0]];
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for (var i=0;i<this.operators.length; ++i) {
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repr.push(this.operators[i], this.expressions[i+1]);
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}
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return repr.join(' ') + ')';
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}
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var out = [this.id, this.first, this.second, this.third]
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.filter(function (r){return r}).join(' ');
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return '(' + out + ')';
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}
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};
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function symbol(id, bp) {
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bp = bp || 0;
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var s = symbols[id];
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if (s) {
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if (bp > s.lbp) {
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s.lbp = bp;
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}
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return s;
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}
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return symbols[id] = create(Base, {
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id: id,
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lbp: bp
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});
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}
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function constant(id) {
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symbol(id).nud = function () {
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this.id = "(constant)";
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this.value = id;
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return this;
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};
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}
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function prefix(id, bp, nud) {
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symbol(id).nud = nud || function () {
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this.first = expression(bp);
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return this
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}
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}
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function infix(id, bp, led) {
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symbol(id, bp).led = led || function (left) {
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this.first = left;
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this.second = expression(bp);
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return this;
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}
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}
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function infixr(id, bp) {
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symbol(id, bp).led = function (left) {
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this.first = left;
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this.second = expression(bp - 1);
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return this;
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}
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}
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function comparator(id) {
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comparators[id] = true;
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var bp = 60;
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infix(id, bp, function (left) {
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this.id = '(comparator)';
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this.operators = [id];
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this.expressions = [left, expression(bp)];
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while (token.id in comparators) {
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this.operators.push(token.id);
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advance();
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this.expressions.push(
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expression(bp));
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}
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return this;
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});
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}
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constant('None'); constant('False'); constant('True');
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symbol('(number)').nud = function () { return this; };
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symbol('(name)').nud = function () { return this; };
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symbol('(string)').nud = function () { return this; };
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symbol('(end)');
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symbol(':'); symbol(')'); symbol(']'); symbol('}'); symbol(',');
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symbol('else');
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symbol('lambda', 20).nud = function () {
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this.first = [];
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if (token.id !== ':') {
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for(;;) {
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if (token.id !== '(name)') {
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throw new Error('Excepted an argument name');
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}
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this.first.push(token);
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advance();
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if (token.id !== ',') {
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break;
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}
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advance(',');
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}
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}
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advance(':');
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this.second = expression();
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return this;
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};
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infix('if', 20, function (left) {
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this.first = left;
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this.second = expression();
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advance('else');
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this.third = expression();
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return this;
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});
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infixr('or', 30); infixr('and', 40); prefix('not', 50);
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comparator('in'); comparator('not in');
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comparator('is'); comparator('is not');
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comparator('<'); comparator('<=');
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comparator('>'); comparator('>=');
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comparator('<>'); comparator('!='); comparator('==');
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infix('|', 70); infix('^', 80), infix('&', 90);
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infix('<<', 100); infix('>>', 100);
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infix('+', 110); infix('-', 110);
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infix('*', 120); infix('/', 120);
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infix('//', 120), infix('%', 120);
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prefix('-', 130); prefix('+', 130); prefix('~', 130);
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infixr('**', 140);
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infix('.', 150, function (left) {
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if (token.id !== '(name)') {
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throw new Error('Expected attribute name, got ', token.id);
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}
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this.first = left;
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this.second = token;
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advance();
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return this;
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});
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symbol('(', 150).nud = function () {
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this.first = [];
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var comma = false;
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if (token.id !== ')') {
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while (true) {
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if (token.id === ')') {
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break;
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}
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this.first.push(expression());
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if (token.id !== ',') {
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break;
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}
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comma = true;
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advance(',');
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}
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}
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advance(')');
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if (!this.first.length || comma) {
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return this;
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} else {
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return this.first[0];
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}
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};
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symbol('(').led = function (left) {
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this.first = left;
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this.second = [];
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if (token.id !== ")") {
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for(;;) {
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this.second.push(expression());
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if (token.id !== ',') {
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break;
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}
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advance(',');
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}
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}
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advance(")");
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return this;
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};
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infix('[', 150, function (left) {
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this.first = left;
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this.second = expression();
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advance("]");
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return this;
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});
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symbol('[').nud = function () {
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this.first = [];
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if (token.id !== ']') {
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for (;;) {
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if (token.id === ']') {
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break;
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}
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this.first.push(expression());
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if (token.id !== ',') {
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break;
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}
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advance(',');
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}
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}
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advance(']');
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return this;
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};
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symbol('{').nud = function () {
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this.first = [];
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if (token.id !== '}') {
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for(;;) {
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if (token.id === '}') {
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break;
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}
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var key = expression();
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advance(':');
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var value = expression();
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this.first.push([key, value]);
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if (token.id !== ',') {
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break;
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}
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advance(',');
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}
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}
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advance('}');
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return this;
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};
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var longops = {
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'*': ['*'],
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'<': ['<', '=', '>'],
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'>': ['=', '>'],
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'!': ['='],
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'=': ['='],
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'/': ['/']
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};
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function Tokenizer() {
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this.states = ['initial'];
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this.tokens = [];
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}
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Tokenizer.prototype = {
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builder: function (empty) {
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var key = this.states[0] + '_builder';
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if (empty) {
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var value = this[key];
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delete this[key];
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return value;
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} else {
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return this[key] = this[key] || [];
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}
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},
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simple: function (type) {
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this.tokens.push({type: type});
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},
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push: function (new_state) {
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this.states.push(new_state);
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},
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pop: function () {
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this.states.pop();
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},
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feed: function (str, index) {
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var s = this.states;
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return this[s[s.length - 1]](str, index);
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},
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initial: function (str, index) {
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var character = str[index];
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if (character in longops) {
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var follow = longops[character];
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for(var i=0, len=follow.length; i<len; ++i) {
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if (str[index+1] === follow[i]) {
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character += follow[i];
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index++;
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break;
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}
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}
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}
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if (character === ' ') {
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return index+1;
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} else if (character === '\0') {
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this.tokens.push(symbols['(end)']);
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return index + 1
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} else if (character === '"' || character === "'") {
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this.push('string');
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return index + 1;
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} else if (NUMBER.test(character)) {
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this.push('number');
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return index;
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} else if (NAME_FIRST.test(character)) {
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this.push('name');
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return index;
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} else if (character in symbols) {
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this.tokens.push(create(symbols[character]));
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return index + 1;
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}
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throw new Error("Tokenizing failure of <<" + str + ">> at index " + index
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+ ", character [[" + character + "]]"
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+ "; parsed so far: " + this.tokens);
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},
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string: function (str, index) {
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var character = str[index];
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if (character === '"' || character === "'") {
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this.tokens.push(create(symbols['(string)'], {
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value: this.builder(true).join('')
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}));
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this.pop();
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return index + 1;
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}
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this.builder().push(character);
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return index + 1;
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},
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number: function (str, index) {
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var character = str[index];
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if (!NUMBER.test(character)) {
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this.tokens.push(create(symbols['(number)'], {
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value: parseFloat(this.builder(true).join(''))
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}));
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this.pop();
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return index;
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}
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this.builder().push(character);
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return index + 1;
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},
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name: function (str, index) {
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var character = str[index];
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if (!NAME.test(character)) {
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var name = this.builder(true).join('');
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var symbol = symbols[name];
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if (symbol) {
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if (name === 'in' && this.tokens[this.tokens.length-1].id === 'not') {
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symbol = symbols['not in'];
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this.tokens.pop();
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} else if (name === 'not' && this.tokens[this.tokens.length-1].id === 'is') {
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symbol = symbols['is not'];
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this.tokens.pop();
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}
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this.tokens.push(create(symbol));
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} else {
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this.tokens.push(create(symbols['(name)'], {
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value: name
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}));
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}
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this.pop();
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return index;
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}
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this.builder().push(character);
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return index + 1;
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}
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};
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exports.tokenize = function tokenize(str) {
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var index = 0,
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tokenizer = new Tokenizer(str);
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str += '\0';
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|
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do {
|
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index = tokenizer.feed(str, index);
|
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} while (index !== str.length);
|
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return tokenizer.tokens;
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};
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|
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var token, next;
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function expression(rbp) {
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rbp = rbp || 0;
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var t = token;
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token = next();
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var left = t.nud();
|
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while (rbp < token.lbp) {
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t = token;
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token = next();
|
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left = t.led(left);
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}
|
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return left;
|
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}
|
||||
function advance(id) {
|
||||
if (id && token.id !== id) {
|
||||
throw new Error(
|
||||
'Expected "' + id + '", got "' + token.id + '"');
|
||||
}
|
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token = next();
|
||||
}
|
||||
|
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exports.object = create({}, {});
|
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exports.bool = function (arg) { return !!arg; };
|
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exports.tuple = create(exports.object, {
|
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__contains__: function (value) {
|
||||
for(var i=0, len=this.values.length; i<len; ++i) {
|
||||
if (this.values[i] === value) {
|
||||
return true;
|
||||
}
|
||||
}
|
||||
return false;
|
||||
},
|
||||
toJSON: function () {
|
||||
return this.values;
|
||||
}
|
||||
});
|
||||
exports.list = exports.tuple;
|
||||
exports.dict = create(exports.object, {
|
||||
toJSON: function () {
|
||||
return this.values;
|
||||
}
|
||||
});
|
||||
|
||||
exports.parse = function (toks) {
|
||||
var index = 0;
|
||||
token = toks[0];
|
||||
next = function () { return toks[++index]; };
|
||||
return expression();
|
||||
};
|
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var evaluate_operator = function (operator, a, b) {
|
||||
switch (operator) {
|
||||
case '==': case 'is': return a === b;
|
||||
case '!=': case 'is not': return a !== b;
|
||||
case '<': return a < b;
|
||||
case '<=': return a <= b;
|
||||
case '>': return a > b;
|
||||
case '>=': return a >= b;
|
||||
case 'in':
|
||||
if (typeof b === 'string') {
|
||||
return b.indexOf(a) !== -1;
|
||||
}
|
||||
return b.__contains__(a);
|
||||
case 'not in':
|
||||
if (typeof b === 'string') {
|
||||
return b.indexOf(a) === -1;
|
||||
}
|
||||
return !b.__contains__(a);
|
||||
}
|
||||
throw new Error('SyntaxError: unknown comparator [[' + operator + ']]');
|
||||
};
|
||||
exports.evaluate = function (expr, context) {
|
||||
switch (expr.id) {
|
||||
case '(name)':
|
||||
var val = context[expr.value];
|
||||
if (val === undefined) {
|
||||
throw new Error("NameError: name '" + expr.value + "' is not defined");
|
||||
}
|
||||
return val;
|
||||
case '(string)':
|
||||
case '(number)':
|
||||
return expr.value;
|
||||
case '(constant)':
|
||||
if (expr.value === 'None')
|
||||
return null;
|
||||
else if (expr.value === 'False')
|
||||
return false;
|
||||
else if (expr.value === 'True')
|
||||
return true;
|
||||
throw new Error("SyntaxError: unknown constant '" + expr.value + "'");
|
||||
case '(comparator)':
|
||||
var result, left = exports.evaluate(expr.expressions[0], context);
|
||||
for(var i=0; i<expr.operators.length; ++i) {
|
||||
result = evaluate_operator(
|
||||
expr.operators[i],
|
||||
left,
|
||||
left = exports.evaluate(expr.expressions[i+1], context));
|
||||
if (!result) { return false; }
|
||||
}
|
||||
return true;
|
||||
case '-':
|
||||
if (expr.second) {
|
||||
throw new Error('SyntaxError: binary [-] not implemented yet');
|
||||
}
|
||||
return -(exports.evaluate(expr.first, context));
|
||||
case 'not':
|
||||
return !(exports.evaluate(expr.first, context));
|
||||
case 'and':
|
||||
return (exports.evaluate(expr.first, context)
|
||||
&& exports.evaluate(expr.second, context));
|
||||
case 'or':
|
||||
return (exports.evaluate(expr.first, context)
|
||||
|| exports.evaluate(expr.second, context));
|
||||
case '(':
|
||||
if (expr.second) {
|
||||
var fn = exports.evaluate(expr.first, context), args=[];
|
||||
for (var jj=0; jj<expr.second.length; ++jj) {
|
||||
args.push(exports.evaluate(
|
||||
expr.second[jj], context));
|
||||
}
|
||||
return fn.apply(null, args);
|
||||
}
|
||||
var tuple_exprs = expr.first,
|
||||
tuple_values = [];
|
||||
for (var j=0, len=tuple_exprs.length; j<len; ++j) {
|
||||
tuple_values.push(exports.evaluate(
|
||||
tuple_exprs[j], context));
|
||||
}
|
||||
return create(exports.tuple, {values: tuple_values});
|
||||
case '[':
|
||||
if (expr.second) {
|
||||
throw new Error('SyntaxError: indexing not implemented yet');
|
||||
}
|
||||
var list_exprs = expr.first, list_values = [];
|
||||
for (var k=0; k<list_exprs.length; ++k) {
|
||||
list_values.push(exports.evaluate(
|
||||
list_exprs[k], context));
|
||||
}
|
||||
return create(exports.list, {values: list_values});
|
||||
case '{':
|
||||
var dict_exprs = expr.first, dict_values = {};
|
||||
for(var l=0; l<dict_exprs.length; ++l) {
|
||||
dict_values[exports.evaluate(dict_exprs[l][0], context)] =
|
||||
exports.evaluate(dict_exprs[l][1], context);
|
||||
}
|
||||
return create(exports.dict, {values: dict_values});
|
||||
case '.':
|
||||
if (expr.second.id !== '(name)') {
|
||||
throw new Error('SyntaxError: ' + expr);
|
||||
}
|
||||
return exports.evaluate(expr.first, context)[expr.second.value];
|
||||
default:
|
||||
throw new Error('SyntaxError: Unknown node [[' + expr.id + ']]');
|
||||
}
|
||||
};
|
||||
exports.eval = function (str, context) {
|
||||
return exports.evaluate(
|
||||
exports.parse(
|
||||
exports.tokenize(
|
||||
str)),
|
||||
context);
|
||||
}
|
||||
})(typeof exports === 'undefined' ? py : exports);
|
||||
|
|
@ -0,0 +1,90 @@
|
|||
var py = require('../lib/py.js'),
|
||||
assert = require('assert');
|
||||
|
||||
// Literals
|
||||
assert.strictEqual(py.eval('1'), 1);
|
||||
assert.strictEqual(py.eval('None'), null);
|
||||
assert.strictEqual(py.eval('False'), false);
|
||||
assert.strictEqual(py.eval('True'), true);
|
||||
assert.strictEqual(py.eval('"somestring"'), 'somestring');
|
||||
assert.strictEqual(py.eval("'somestring'"), 'somestring');
|
||||
assert.deepEqual(py.eval("()").toJSON(), []);
|
||||
assert.deepEqual(py.eval("[]").toJSON(), []);
|
||||
assert.deepEqual(py.eval("{}").toJSON(), {});
|
||||
assert.deepEqual(py.eval("(None, True, False, 0, 1, 'foo')").toJSON(),
|
||||
[null, true, false, 0, 1, 'foo']);
|
||||
assert.deepEqual(py.eval("[None, True, False, 0, 1, 'foo']").toJSON(),
|
||||
[null, true, false, 0, 1, 'foo']);
|
||||
assert.deepEqual(py.eval("{'foo': 1, foo: 2}", {foo: 'bar'}).toJSON(),
|
||||
{foo: 1, bar: 2});
|
||||
|
||||
// Equality tests
|
||||
assert.ok(py.eval(
|
||||
"foo == 'foo'", {foo: 'foo'}));
|
||||
// Inequality
|
||||
assert.ok(py.eval(
|
||||
"foo != bar", {foo: 'foo', bar: 'bar'}));
|
||||
|
||||
// Comparisons
|
||||
assert.ok(py.eval('3 < 5'));
|
||||
assert.ok(py.eval('5 >= 3'));
|
||||
assert.ok(py.eval('3 >= 3'));
|
||||
assert.ok(!py.eval('5 < 3'));
|
||||
assert.ok(py.eval('1 < 3 < 5'));
|
||||
assert.ok(py.eval('5 > 3 > 1'));
|
||||
assert.ok(py.eval('1 < 3 > 2 == 2 > -2 not in (0, 1, 2)'));
|
||||
// string rich comparisons
|
||||
assert.ok(py.eval(
|
||||
'date >= current', {date: '2010-06-08', current: '2010-06-05'}));
|
||||
|
||||
// Boolean operators
|
||||
assert.ok(py.eval(
|
||||
"foo == 'foo' or foo == 'bar'", {foo: 'bar'}));
|
||||
assert.ok(py.eval(
|
||||
"foo == 'foo' and bar == 'bar'", {foo: 'foo', bar: 'bar'}));
|
||||
// - lazyness, second clauses NameError if not short-circuited
|
||||
assert.ok(py.eval(
|
||||
"foo == 'foo' or bar == 'bar'", {foo: 'foo'}));
|
||||
assert.ok(!py.eval(
|
||||
"foo == 'foo' and bar == 'bar'", {foo: 'bar'}));
|
||||
|
||||
// contains (in)
|
||||
assert.ok(py.eval(
|
||||
"foo in ('foo', 'bar')", {foo: 'bar'}));
|
||||
assert.ok(py.eval('1 in (1, 2, 3, 4)'));
|
||||
assert.ok(!py.eval('1 in (2, 3, 4)'));
|
||||
assert.ok(py.eval('type in ("url",)', {type: 'url'}));
|
||||
assert.ok(!py.eval('type in ("url",)', {type: 'ur'}));
|
||||
assert.ok(py.eval('1 not in (2, 3, 4)'));
|
||||
assert.ok(py.eval('type not in ("url",)', {type: 'ur'}));
|
||||
|
||||
assert.ok(py.eval(
|
||||
"foo in ['foo', 'bar']", {foo: 'bar'}));
|
||||
// string contains
|
||||
assert.ok(py.eval('type in "view"', {type: 'view'}));
|
||||
assert.ok(!py.eval('type in "view"', {type: 'bob'}));
|
||||
assert.ok(py.eval('type in "url"', {type: 'ur'}));
|
||||
|
||||
// Literals
|
||||
assert.strictEqual(py.eval('False'), false);
|
||||
assert.strictEqual(py.eval('True'), true);
|
||||
assert.strictEqual(py.eval('None'), null);
|
||||
assert.ok(py.eval('foo == False', {foo: false}));
|
||||
assert.ok(!py.eval('foo == False', {foo: true}));
|
||||
|
||||
// conversions
|
||||
assert.strictEqual(
|
||||
py.eval('bool(date_deadline)', {bool: py.bool, date_deadline: '2008'}),
|
||||
true);
|
||||
|
||||
// getattr
|
||||
assert.ok(py.eval('foo.bar', {foo: {bar: true}}));
|
||||
assert.ok(!py.eval('foo.bar', {foo: {bar: false}}));
|
||||
|
||||
// complex expressions
|
||||
assert.ok(py.eval(
|
||||
"state=='pending' and not(date_deadline and (date_deadline < current_date))",
|
||||
{state: 'pending', date_deadline: false}));
|
||||
assert.ok(py.eval(
|
||||
"state=='pending' and not(date_deadline and (date_deadline < current_date))",
|
||||
{state: 'pending', date_deadline: '2010-05-08', current_date: '2010-05-08'}));;
|
||||
|
|
@ -49,6 +49,7 @@ openerp.web.ListView = openerp.web.View.extend( /** @lends openerp.web.ListView#
|
|||
this.model = dataset.model;
|
||||
this.view_id = view_id;
|
||||
this.previous_colspan = null;
|
||||
this.colors = null;
|
||||
|
||||
this.columns = [];
|
||||
|
||||
|
|
@ -75,6 +76,7 @@ openerp.web.ListView = openerp.web.View.extend( /** @lends openerp.web.ListView#
|
|||
}
|
||||
self.compute_aggregates();
|
||||
});
|
||||
|
||||
},
|
||||
/**
|
||||
* Retrieves the view's number of records per page (|| section)
|
||||
|
|
@ -131,6 +133,30 @@ openerp.web.ListView = openerp.web.View.extend( /** @lends openerp.web.ListView#
|
|||
this.$element.addClass('oe-listview');
|
||||
return this.reload_view(null, null, true);
|
||||
},
|
||||
/**
|
||||
* Returns the color for the provided record in the current view (from the
|
||||
* ``@colors`` attribute)
|
||||
*
|
||||
* @param {Record} record record for the current row
|
||||
* @returns {String} CSS color declaration
|
||||
*/
|
||||
color_for: function (record) {
|
||||
if (!this.colors) { return ''; }
|
||||
var context = _.extend({}, record.attributes, {
|
||||
uid: this.session.uid,
|
||||
current_date: new Date().toString('yyyy-MM-dd')
|
||||
// TODO: time, datetime, relativedelta
|
||||
});
|
||||
for(var i=0, len=this.colors.length; i<len; ++i) {
|
||||
var pair = this.colors[i],
|
||||
color = pair[0],
|
||||
expression = pair[1];
|
||||
if (py.evaluate(expression, context)) {
|
||||
return 'color: ' + color + ';';
|
||||
}
|
||||
}
|
||||
return '';
|
||||
},
|
||||
/**
|
||||
* Called after loading the list view's description, sets up such things
|
||||
* as the view table's columns, renders the table itself and hooks up the
|
||||
|
|
@ -159,6 +185,16 @@ openerp.web.ListView = openerp.web.View.extend( /** @lends openerp.web.ListView#
|
|||
this.fields_view = data;
|
||||
this.name = "" + this.fields_view.arch.attrs.string;
|
||||
|
||||
if (this.fields_view.arch.attrs.colors) {
|
||||
this.colors = _(this.fields_view.arch.attrs.colors.split(';')).map(
|
||||
function (color_pair) {
|
||||
var pair = color_pair.split(':'),
|
||||
color = pair[0],
|
||||
expr = pair[1];
|
||||
return [color, py.parse(py.tokenize(expr))];
|
||||
});
|
||||
}
|
||||
|
||||
this.setup_columns(this.fields_view.fields, grouped);
|
||||
|
||||
this.$element.html(QWeb.render("ListView", this));
|
||||
|
|
|
|||
|
|
@ -616,7 +616,8 @@
|
|||
</t>
|
||||
</t>
|
||||
<tr t-name="ListView.row" t-att-class="row_parity"
|
||||
t-att-data-id="record.get('id')">
|
||||
t-att-data-id="record.get('id')"
|
||||
t-att-style="view.color_for(record)">
|
||||
<t t-foreach="columns" t-as="column">
|
||||
<td t-if="column.meta">
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue