mirror of
https://github.com/jashkenas/coffeescript.git
synced 2022-11-09 12:23:24 -05:00
defarg: removed Splat::compileParam in favor of using the normal array destructuring against arguments
This commit is contained in:
satyr
parent
e7cc4e4faf
commit
4eeab947dd
3 changed files with 129 additions and 167 deletions
178
lib/nodes.js
178
lib/nodes.js
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@ -96,7 +96,7 @@
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};
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Base.prototype.toString = function(idt, override) {
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var _i, _len, _ref2, _result, child, children, klass;
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idt || (idt = '');
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idt != null ? idt : idt = '';
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children = ((function() {
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_ref2 = this.collectChildren();
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_result = [];
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@ -209,7 +209,7 @@
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return this;
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};
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Expressions.prototype.compile = function(o, level) {
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o || (o = {});
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o != null ? o : o = {};
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return o.scope ? Expressions.__super__.compile.call(this, o, level) : this.compileRoot(o);
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};
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Expressions.prototype.compileNode = function(o) {
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@ -464,13 +464,12 @@
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exports.Call = (function() {
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Call = (function() {
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function Call(variable, _arg, _arg2) {
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this.args = _arg != null ? _arg : [];
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this.soak = _arg2;
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this.args = _arg;
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Call.__super__.constructor.call(this);
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this["new"] = '';
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this.isSuper = variable === 'super';
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this.variable = this.isSuper ? null : variable;
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this.args || (this.args = []);
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return this;
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}
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return Call;
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@ -595,8 +594,8 @@
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exports.Extends = (function() {
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Extends = (function() {
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function Extends(_arg, _arg2) {
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this.parent = _arg2;
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this.child = _arg;
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this.parent = _arg2;
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Extends.__super__.constructor.call(this);
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return this;
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}
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@ -788,8 +787,8 @@
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exports.Class = (function() {
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Class = (function() {
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function Class(_arg, _arg2, props) {
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this.parent = _arg2;
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this.variable = _arg;
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this.parent = _arg2;
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Class.__super__.constructor.call(this);
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this.properties = props || [];
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this.returns = false;
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@ -888,9 +887,9 @@
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exports.Assign = (function() {
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Assign = (function() {
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function Assign(_arg, _arg2, _arg3) {
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this.context = _arg3;
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this.value = _arg2;
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this.variable = _arg;
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this.value = _arg2;
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this.context = _arg3;
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Assign.__super__.constructor.call(this);
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return this;
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}
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@ -934,7 +933,7 @@
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return o.level <= LEVEL_LIST ? val : "(" + val + ")";
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};
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Assign.prototype.compilePatternMatch = function(o) {
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var _len, _ref2, _ref3, _ref4, _ref5, _ref6, _ref7, acc, assigns, code, i, idx, isObject, obj, objects, olength, ref, splat, top, val, valVar, value;
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var _len, _ref2, _ref3, _ref4, _ref5, _ref6, _ref7, acc, assigns, code, i, idx, isObject, ivar, obj, objects, olength, ref, rest, splat, top, val, valVar, value;
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top = o.level === LEVEL_TOP;
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value = this.value;
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objects = this.variable.base.objects;
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@ -979,11 +978,15 @@
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}
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}
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if (!splat && obj instanceof Splat) {
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val = new Literal(obj.compileValue(o, valVar, i, olength - i - 1));
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splat = true;
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if (rest = olength - i - 1 || '') {
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ivar = o.scope.freeVariable('i');
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rest = ", " + ivar + " = " + valVar + ".length - " + rest;
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}
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val = new Literal(utility('slice') + (".call(" + valVar + ", " + i + rest + ")"));
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splat = "" + ivar + " < " + i + " ? " + ivar + " = " + i + " : " + ivar + "++";
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} else {
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if (typeof idx !== 'object') {
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idx = new Literal(splat ? "" + valVar + ".length - " + (olength - idx) : idx);
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if (typeof idx === 'number') {
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idx = new Literal(splat || idx);
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acc = false;
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} else {
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acc = isObject && IDENTIFIER.test(idx.unwrap().value || 0);
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@ -1008,8 +1011,8 @@
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exports.Code = (function() {
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Code = (function() {
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function Code(_arg, _arg2, tag) {
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this.body = _arg2 != null ? _arg2 : new Expressions;
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this.params = _arg != null ? _arg : [];
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this.body = _arg2 != null ? _arg2 : new Expressions;
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Code.__super__.constructor.call(this);
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this.bound = tag === 'boundfunc';
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if (this.bound) {
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@ -1022,53 +1025,62 @@
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__extends(Code, Base);
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Code.prototype.children = ['params', 'body'];
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Code.prototype.compileNode = function(o) {
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var _len, _len2, _ref2, close, code, comm, empty, func, i, idt, name, open, param, params, scope, sharedScope, splat, value;
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var _i, _j, _len, _len2, _len3, _ref2, _ref3, _result, _this, close, code, comm, exprs, func, i, idt, open, p, param, ref, scope, sharedScope, splats, v, vars, wasEmpty;
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sharedScope = del(o, 'sharedScope');
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o.scope = scope = sharedScope || new Scope(o.scope, this.body, this);
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o.indent = this.idt(1);
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empty = this.body.expressions.length === 0;
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delete o.bare;
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delete o.globals;
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splat = null;
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params = [];
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vars = [];
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exprs = [];
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_ref2 = this.params;
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for (i = 0, _len = _ref2.length; i < _len; i++) {
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param = _ref2[i];
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if (splat) {
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if (param.attach) {
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param.assign = new Assign(param.name);
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this.body.expressions.splice(splat.index + 1, 0, param.assign);
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} else if (param.value) {
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this.body.unshift(new Assign(new Value(param.name), param.value, '?='));
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}
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splat.trailings.push(param);
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for (_i = 0, _len = _ref2.length; _i < _len; _i++) {
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param = _ref2[_i];
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if (param.splat) {
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splats = new Assign(new Value(new Arr((function() {
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_ref3 = this.params;
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_result = [];
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for (_j = 0, _len2 = _ref3.length; _j < _len2; _j++) {
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p = _ref3[_j];
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_result.push(p.asReference(o));
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}
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return _result;
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}).call(this))), new Value(new Literal('arguments')));
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break;
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}
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}
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_ref3 = this.params;
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for (_j = 0, _len2 = _ref3.length; _j < _len2; _j++) {
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param = _ref3[_j];
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if (param.attach) {
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ref = param.asReference(o);
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exprs.push(new Assign(param.name, param.value ? new Op('?', ref, param.value) : ref));
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} else {
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if (param.attach) {
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name = param.name, value = param.value, splat = param.splat;
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param = new Literal(scope.freeVariable('arg'));
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param.splat = splat;
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this.body.unshift(new Assign(name, value ? new Op('?', param, value) : param));
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} else if (param.value) {
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this.body.unshift(new Assign(new Value(param.name), param.value, '?='));
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}
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if (param.splat) {
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splat = new Splat(param.name || param);
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splat.index = i;
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splat.trailings = [];
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splat.arglength = this.params.length;
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this.body.unshift(splat);
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} else {
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params.push(param);
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ref = param;
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if (param.value) {
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exprs.push(new Assign(new Value(param.name), param.value, '?='));
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}
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}
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if (!splats) {
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vars.push(ref);
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}
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}
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scope.startLevel();
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if (!(empty || this.noReturn)) {
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wasEmpty = this.body.isEmpty();
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if (splats) {
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exprs.unshift(splats);
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}
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if (exprs.length) {
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(_this = this.body.expressions).splice.apply(_this, [0, 0].concat(exprs));
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}
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if (!(wasEmpty || this.noReturn)) {
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this.body.makeReturn();
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}
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for (i = 0, _len2 = params.length; i < _len2; i++) {
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param = params[i];
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scope.parameter(params[i] = param.compile(o));
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if (!splats) {
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for (i = 0, _len3 = vars.length; i < _len3; i++) {
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v = vars[i];
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scope.parameter(vars[i] = v.compile(o));
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}
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}
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comm = this.comment ? this.comment.compile(o) + '\n' : '';
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if (this.className) {
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@ -1080,10 +1092,10 @@
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open = "(function() {\n" + comm + idt + "function " + this.className + "(";
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close = "" + (code && idt) + "}\n" + idt + "return " + this.className + ";\n" + this.tab + "})()";
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} else {
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open = "function(";
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open = 'function(';
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close = "" + (code && this.tab) + "}";
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}
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func = "" + open + (params.join(', ')) + ") {" + code + close;
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func = "" + open + (vars.join(', ')) + ") {" + code + close;
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scope.endLevel();
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if (this.bound) {
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return "" + (utility('bind')) + "(" + func + ", " + this.context + ")";
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@ -1098,9 +1110,9 @@
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exports.Param = (function() {
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Param = (function() {
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function Param(_arg, _arg2, _arg3) {
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this.splat = _arg3;
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this.value = _arg2;
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this.name = _arg;
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this.value = _arg2;
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this.splat = _arg3;
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Param.__super__.constructor.call(this);
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this.attach = this.name instanceof Value;
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return this;
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@ -1112,6 +1124,18 @@
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Param.prototype.compile = function(o) {
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return this.name.compile(o, LEVEL_LIST);
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};
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Param.prototype.asReference = function(o) {
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var node;
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if (this.reference) {
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return this.reference;
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}
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node = this.attach ? new Literal(o.scope.freeVariable('arg')) : this.name;
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node = new Value(node);
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if (this.splat) {
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node = new Splat(node);
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}
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return this.reference = node;
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};
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return Param;
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})();
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exports.Splat = (function() {
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@ -1132,36 +1156,6 @@
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Splat.prototype.compile = function(o) {
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return this.index != null ? this.compileParam(o) : this.name.compile(o);
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};
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Splat.prototype.compileParam = function(o) {
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var _len, _ref2, assign, end, idx, len, name, param, pos, value, variadic;
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name = this.name.compile(o);
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o.scope.find(name);
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end = '';
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if (this.trailings.length) {
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len = o.scope.freeVariable('len');
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o.scope.assign(len, 'arguments.length');
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variadic = o.scope.freeVariable('result');
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o.scope.assign(variadic, len + ' >= ' + this.arglength);
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end = this.trailings.length ? ", " + len + " - " + this.trailings.length : undefined;
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_ref2 = this.trailings;
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for (idx = 0, _len = _ref2.length; idx < _len; idx++) {
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param = _ref2[idx];
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if (param.attach) {
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assign = param.assign, value = param.value;
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param = new Literal(o.scope.freeVariable('arg'));
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assign.value = value ? new Op('?', param, value) : param;
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}
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pos = this.trailings.length - idx;
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o.scope.assign(param.compile(o), "arguments[" + variadic + " ? " + len + " - " + pos + " : " + (this.index + idx) + "]");
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}
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}
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return "" + name + " = " + (utility('slice')) + ".call(arguments, " + this.index + end + ")";
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};
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Splat.prototype.compileValue = function(o, name, index, trailings) {
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var trail;
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trail = trailings ? ', -' + trailings : '';
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return utility('slice') + (".call(" + name + ", " + index + trail + ")");
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};
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Splat.compileSplattedArray = function(list, o) {
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var _len, arg, args, code, end, i, prev;
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args = [];
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@ -1343,8 +1337,8 @@
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exports.In = (function() {
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In = (function() {
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function In(_arg, _arg2) {
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this.array = _arg2;
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this.object = _arg;
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this.array = _arg2;
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In.__super__.constructor.call(this);
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return this;
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}
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@ -1393,10 +1387,10 @@
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exports.Try = (function() {
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Try = (function() {
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function Try(_arg, _arg2, _arg3, _arg4) {
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this.ensure = _arg4;
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this.recovery = _arg3;
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this.error = _arg2;
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this.attempt = _arg;
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this.error = _arg2;
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this.recovery = _arg3;
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this.ensure = _arg4;
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Try.__super__.constructor.call(this);
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return this;
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}
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@ -1622,9 +1616,9 @@
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exports.Switch = (function() {
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Switch = (function() {
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function Switch(_arg, _arg2, _arg3) {
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this.otherwise = _arg3;
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this.cases = _arg2;
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this.subject = _arg;
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this.cases = _arg2;
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this.otherwise = _arg3;
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Switch.__super__.constructor.call(this);
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return this;
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}
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@ -1686,13 +1680,13 @@
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})();
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exports.If = (function() {
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If = (function() {
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function If(condition, _arg, tags) {
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function If(condition, _arg, _arg2) {
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this.body = _arg;
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this.tags = tags || (tags = {});
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this.condition = tags.invert ? condition.invert() : condition;
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this.soak = tags.soak;
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this.tags = _arg2 != null ? _arg2 : {};
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this.condition = this.tags.invert ? condition.invert() : condition;
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this.elseBody = null;
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this.isChain = false;
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this.soak = this.tags.soak;
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return this;
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}
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return If;
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@ -4,9 +4,9 @@
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exports.Scope = (function() {
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Scope = (function() {
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function Scope(_arg, _arg2, _arg3) {
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this.method = _arg3;
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this.expressions = _arg2;
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this.parent = _arg;
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this.expressions = _arg2;
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this.method = _arg3;
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this.variables = [
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{
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name: 'arguments',
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114
src/nodes.coffee
114
src/nodes.coffee
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@ -107,8 +107,7 @@ exports.Base = class Base
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# `toString` representation of the node, for inspecting the parse tree.
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# This is what `coffee --nodes` prints out.
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toString: (idt, override) ->
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idt or= ''
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toString: (idt = '', override) ->
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children = (child.toString idt + TAB for child in @collectChildren()).join('')
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klass = override or @constructor.name + if @soak then '?' else ''
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'\n' + idt + klass + children
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@ -198,8 +197,7 @@ exports.Expressions = class Expressions extends Base
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this
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# An **Expressions** is the only node that can serve as the root.
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compile: (o, level) ->
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o or= {}
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compile: (o = {}, level) ->
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if o.scope then super o, level else @compileRoot o
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compileNode: (o) ->
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@ -405,12 +403,11 @@ exports.Call = class Call extends Base
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children: ['variable', 'args']
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constructor: (variable, @args, @soak) ->
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constructor: (variable, @args = [], @soak) ->
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super()
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@new = ''
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@isSuper = variable is 'super'
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@variable = if @isSuper then null else variable
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@args or= []
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# Tag this invocation as creating a new instance.
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newInstance: ->
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@ -803,11 +800,14 @@ exports.Assign = class Assign extends Base
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then [obj, idx] = new Value(obj.unwrapAll()).cacheReference o
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else idx = if obj.tags.this then obj.properties[0].name else obj
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if not splat and obj instanceof Splat
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val = new Literal obj.compileValue o, valVar, i, olength - i - 1
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splat = true
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if rest = olength - i - 1 or ''
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ivar = o.scope.freeVariable 'i'
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rest = ", #{ivar} = #{valVar}.length - #{rest}"
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val = new Literal utility('slice') + ".call(#{valVar}, #{i}#{rest})"
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splat = "#{ivar} < #{i} ? #{ivar} = #{i} : #{ivar}++"
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else
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if typeof idx isnt 'object'
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idx = new Literal(if splat then "#{valVar}.length - #{ olength - idx }" else idx)
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if typeof idx is 'number'
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idx = new Literal splat or idx
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acc = no
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else
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acc = isObject and IDENTIFIER.test idx.unwrap().value or 0
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@ -847,39 +847,29 @@ exports.Code = class Code extends Base
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sharedScope = del o, 'sharedScope'
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o.scope = scope = sharedScope or new Scope o.scope, @body, this
|
||||
o.indent = @idt 1
|
||||
empty = @body.expressions.length is 0
|
||||
delete o.bare
|
||||
delete o.globals
|
||||
splat = null
|
||||
params = []
|
||||
for param, i in @params
|
||||
if splat
|
||||
if param.attach
|
||||
param.assign = new Assign param.name
|
||||
@body.expressions.splice splat.index + 1, 0, param.assign
|
||||
else if param.value
|
||||
@body.unshift new Assign new Value(param.name), param.value, '?='
|
||||
splat.trailings.push param
|
||||
vars = []
|
||||
exprs = []
|
||||
for param in @params when param.splat
|
||||
splats = new Assign new Value(new Arr(p.asReference o for p in @params)),
|
||||
new Value new Literal 'arguments'
|
||||
break
|
||||
for param in @params
|
||||
if param.attach
|
||||
ref = param.asReference o
|
||||
exprs.push new Assign param.name,
|
||||
if param.value then new Op '?', ref, param.value else ref
|
||||
else
|
||||
if param.attach
|
||||
{name, value, splat} = param
|
||||
param = new Literal scope.freeVariable 'arg'
|
||||
param.splat = splat
|
||||
@body.unshift new Assign name,
|
||||
if value then new Op '?', param, value else param
|
||||
else if param.value
|
||||
@body.unshift new Assign new Value(param.name), param.value, '?='
|
||||
if param.splat
|
||||
splat = new Splat param.name or param
|
||||
splat.index = i
|
||||
splat.trailings = []
|
||||
splat.arglength = @params.length
|
||||
@body.unshift splat
|
||||
else
|
||||
params.push param
|
||||
ref = param
|
||||
exprs.push new Assign new Value(param.name), param.value, '?=' if param.value
|
||||
vars.push ref unless splats
|
||||
scope.startLevel()
|
||||
@body.makeReturn() unless empty or @noReturn
|
||||
scope.parameter params[i] = param.compile o for param, i in params
|
||||
wasEmpty = @body.isEmpty()
|
||||
exprs.unshift splats if splats
|
||||
@body.expressions.splice 0, 0, exprs... if exprs.length
|
||||
@body.makeReturn() unless wasEmpty or @noReturn
|
||||
scope.parameter vars[i] = v.compile o for v, i in vars unless splats
|
||||
comm = if @comment then @comment.compile(o) + '\n' else ''
|
||||
o.indent = @idt 2 if @className
|
||||
idt = @idt 1
|
||||
|
|
@ -889,9 +879,9 @@ exports.Code = class Code extends Base
|
|||
open = "(function() {\n#{comm}#{idt}function #{@className}("
|
||||
close = "#{ code and idt }}\n#{idt}return #{@className};\n#{@tab}})()"
|
||||
else
|
||||
open = "function("
|
||||
open = 'function('
|
||||
close = "#{ code and @tab }}"
|
||||
func = "#{open}#{ params.join ', ' }) {#{code}#{close}"
|
||||
func = "#{open}#{ vars.join ', ' }) {#{code}#{close}"
|
||||
scope.endLevel()
|
||||
return "#{ utility 'bind' }(#{func}, #{@context})" if @bound
|
||||
if @tags.front then "(#{func})" else func
|
||||
|
|
@ -915,6 +905,13 @@ exports.Param = class Param extends Base
|
|||
|
||||
compile: (o) -> @name.compile o, LEVEL_LIST
|
||||
|
||||
asReference: (o) ->
|
||||
return @reference if @reference
|
||||
node = if @attach then new Literal o.scope.freeVariable 'arg' else this.name
|
||||
node = new Value node
|
||||
node = new Splat node if @splat
|
||||
@reference = node
|
||||
|
||||
#### Splat
|
||||
|
||||
# A splat, either as a parameter to a function, an argument to a call,
|
||||
|
|
@ -933,34 +930,6 @@ exports.Splat = class Splat extends Base
|
|||
|
||||
compile: (o) -> if @index? then @compileParam o else @name.compile o
|
||||
|
||||
# Compiling a parameter splat means recovering the parameters that succeed
|
||||
# the splat in the parameter list, by slicing the arguments object.
|
||||
compileParam: (o) ->
|
||||
name = @name.compile o
|
||||
o.scope.find name
|
||||
end = ''
|
||||
if @trailings.length
|
||||
len = o.scope.freeVariable 'len'
|
||||
o.scope.assign len, 'arguments.length'
|
||||
variadic = o.scope.freeVariable 'result'
|
||||
o.scope.assign variadic, len + ' >= ' + @arglength
|
||||
end = if @trailings.length then ", #{len} - #{@trailings.length}"
|
||||
for param, idx in @trailings
|
||||
if param.attach
|
||||
{assign, value} = param
|
||||
param = new Literal o.scope.freeVariable 'arg'
|
||||
assign.value = if value then new Op '?', param, value else param
|
||||
pos = @trailings.length - idx
|
||||
o.scope.assign param.compile(o),
|
||||
"arguments[#{variadic} ? #{len} - #{pos} : #{ @index + idx }]"
|
||||
"#{name} = #{ utility 'slice' }.call(arguments, #{@index}#{end})"
|
||||
|
||||
# A compiling a splat as a destructuring assignment means slicing arguments
|
||||
# from the right-hand-side's corresponding array.
|
||||
compileValue: (o, name, index, trailings) ->
|
||||
trail = if trailings then ', -' + trailings else ''
|
||||
utility('slice') + ".call(#{name}, #{index}#{trail})"
|
||||
|
||||
# Utility function that converts arbitrary number of elements, mixed with
|
||||
# splats, to a proper array
|
||||
@compileSplattedArray: (list, o) ->
|
||||
|
|
@ -1377,12 +1346,11 @@ exports.If = class If extends Base
|
|||
|
||||
children: ['condition', 'body', 'elseBody']
|
||||
|
||||
constructor: (condition, @body, tags) ->
|
||||
@tags = tags or= {}
|
||||
@condition = if tags.invert then condition.invert() else condition
|
||||
@soak = tags.soak
|
||||
constructor: (condition, @body, @tags = {}) ->
|
||||
@condition = if @tags.invert then condition.invert() else condition
|
||||
@elseBody = null
|
||||
@isChain = false
|
||||
{@soak} = @tags
|
||||
|
||||
bodyNode: -> @body?.unwrap()
|
||||
elseBodyNode: -> @elseBody?.unwrap()
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue