return new ctor(props);
};
- function SQUEEZE(nodetype, squeeze) {
- nodetype.DEFMETHOD("squeeze", function(compressor){
- compressor.push_node(this);
- var new_node = squeeze(this, compressor);
- compressor.pop_node();
- return new_node !== undefined ? new_node : this;
- });
- };
-
function do_list(array, compressor) {
return MAP(array, function(node){
return node.squeeze(compressor);
node.DEFMETHOD("aborts", func);
});
- /* -----[ node squeezers ]----- */
-
- SQUEEZE(AST_Directive, function(self, compressor){
- return self.optimize(compressor);
- });
+ /* -----[ optimizers ]----- */
AST_Directive.DEFMETHOD("optimize", function(compressor){
if (this.scope.has_directive(this.value) !== this.scope) {
return this;
});
- SQUEEZE(AST_Debugger, function(self, compressor){
- return self.optimize(compressor);
- });
-
AST_Debugger.DEFMETHOD("optimize", function(compressor){
if (compressor.option("drop_debugger"))
return make_node(AST_EmptyStatement, this);
return this;
});
- SQUEEZE(AST_LabeledStatement, function(self, compressor){
- self = self.clone();
- self.body = self.body.squeeze(compressor);
- return self.optimize(compressor);
- });
-
AST_LabeledStatement.DEFMETHOD("optimize", function(){
return this.label.references.length == 0 ? this.body : this;
});
- SQUEEZE(AST_Statement, function(self, compressor){
- self = self.clone();
- self.body = self.body.squeeze(compressor);
- return self;
- });
-
- SQUEEZE(AST_BlockStatement, function(self, compressor){
- self = self.clone();
- self.body = do_list(self.body, compressor);
- return self.optimize(compressor);
- });
-
AST_BlockStatement.DEFMETHOD("optimize", function(compressor){
this.body = tighten_body(this.body, compressor);
switch (this.body.length) {
return this;
});
- SQUEEZE(AST_Block, function(self, compressor){
- self = self.clone();
- self.body = do_list(self.body, compressor);
- return self.optimize(compressor);
- });
-
AST_Block.DEFMETHOD("optimize", function(compressor){
this.body = tighten_body(this.body, compressor);
return this;
});
- SQUEEZE(AST_Scope, function(self, compressor){
- self = self.clone().hoist_declarations(compressor);
- self.body = do_list(self.body, compressor);
- return self.optimize(compressor);
- });
-
AST_Scope.DEFMETHOD("optimize", function(compressor){
this.body = tighten_body(this.body, compressor);
return this;
return self;
});
- SQUEEZE(AST_SimpleStatement, function(self, compressor){
- self = self.clone();
- self.body = self.body.squeeze(compressor);
- return self.optimize(compressor);
- });
-
AST_SimpleStatement.DEFMETHOD("optimize", function(compressor){
if (!this.body.has_side_effects()) {
compressor.warn("Dropping side-effect-free statement [{file}:{line},{col}]", this.start);
return this;
});
- SQUEEZE(AST_EmptyStatement, function(self, compressor){
- return self;
- });
-
- SQUEEZE(AST_DWLoop, function(self, compressor){
- self = self.clone();
- self.condition = self.condition.squeeze(compressor);
- self.body = self.body.squeeze(compressor);
- return self.optimize(compressor);
- });
-
AST_DWLoop.DEFMETHOD("optimize", function(compressor){
var self = this;
var cond = self.condition.evaluate(compressor);
// return self;
// });
- SQUEEZE(AST_For, function(self, compressor){
- self = self.clone();
- if (self.init) self.init = self.init.squeeze(compressor);
- if (self.condition) self.condition = self.condition.squeeze(compressor);
- if (self.step) self.step = self.step.squeeze(compressor);
- self.body = self.body.squeeze(compressor);
- return self.optimize(compressor);
- });
-
AST_For.DEFMETHOD("optimize", function(compressor){
var cond = this.condition;
if (cond) {
return this;
});
- SQUEEZE(AST_ForIn, function(self, compressor){
- self = self.clone();
- self.init = self.init.squeeze(compressor);
- self.object = self.object.squeeze(compressor);
- self.body = self.body.squeeze(compressor);
- return self;
- });
-
- SQUEEZE(AST_With, function(self, compressor){
- self = self.clone();
- self.expression = self.expression.squeeze(compressor);
- self.body = self.body.squeeze(compressor);
- return self;
- });
-
- SQUEEZE(AST_Exit, function(self, compressor){
- self = self.clone();
- if (self.value) self.value = self.value.squeeze(compressor);
- return self;
- });
-
- SQUEEZE(AST_LoopControl, function(self, compressor){
- self = self.clone();
- if (self.label) self.label = self.label.squeeze(compressor);
- return self;
- });
-
- SQUEEZE(AST_If, function(self, compressor){
- self = self.clone();
- self.condition = self.condition.squeeze(compressor);
- self.body = self.body.squeeze(compressor);
- if (self.alternative)
- self.alternative = self.alternative.squeeze(compressor);
- return self.optimize(compressor);
- });
-
AST_If.DEFMETHOD("optimize", function(compressor){
var self = this;
if (!compressor.option("conditionals")) return self;
return self;
});
- SQUEEZE(AST_Switch, function(self, compressor){
- self = self.clone();
- self.expression = self.expression.squeeze(compressor);
- self.body = self.body.squeeze(compressor);
- return self.optimize(compressor);
- });
-
AST_Switch.DEFMETHOD("optimize", function(compressor){
var last_branch = this.body.body[this.body.body.length - 1];
if (last_branch) {
return this;
});
- SQUEEZE(AST_Case, function(self, compressor){
- self = self.clone();
- self.expression = self.expression.squeeze(compressor);
- self.body = do_list(self.body, compressor);
- return self.optimize(compressor);
- });
-
AST_Case.DEFMETHOD("optimize", function(compressor){
this.body = tighten_body(this.body, compressor);
return this;
});
- SQUEEZE(AST_Try, function(self, compressor){
- self = self.clone();
- self.body = do_list(self.body, compressor);
- if (self.bcatch) self.bcatch = self.bcatch.squeeze(compressor);
- if (self.bfinally) self.bfinally = self.bfinally.squeeze(compressor);
- return self.optimize(compressor);
- });
-
AST_Try.DEFMETHOD("optimize", function(compressor){
this.body = tighten_body(this.body, compressor);
return this;
})(assignments);
});
- SQUEEZE(AST_Definitions, function(self, compressor){
- self = self.clone();
- self.definitions = do_list(self.definitions, compressor);
- return self.optimize(compressor);
- });
-
AST_Definitions.DEFMETHOD("optimize", function(compressor){
if (this.definitions.length == 0)
return make_node(AST_EmptyStatement, this);
return this;
});
- SQUEEZE(AST_VarDef, function(self, compressor){
- self = self.clone();
- if (self.value) self.value = self.value.squeeze(compressor);
- return self;
- });
-
- SQUEEZE(AST_Lambda, function(self, compressor){
- self = self.clone().hoist_declarations(compressor);
- if (self.name) self.name = self.name.squeeze(compressor);
- self.argnames = do_list(self.argnames, compressor);
- self.body = do_list(self.body, compressor);
- return self.optimize(compressor);
- });
-
AST_Function.DEFMETHOD("optimize", function(compressor){
var self = AST_Lambda.prototype.optimize.call(this, compressor);
if (compressor.option("unused")) {
return self;
});
- SQUEEZE(AST_Call, function(self, compressor){
- self = self.clone();
- self.expression = self.expression.squeeze(compressor);
- self.args = do_list(self.args, compressor);
- return self.optimize(compressor);
- });
-
AST_Call.DEFMETHOD("optimize", function(compressor){
if (compressor.option("unsafe")) {
var exp = this.expression;
return this;
});
- SQUEEZE(AST_Seq, function(self, compressor){
- self = self.clone();
- self.car = self.car.squeeze(compressor);
- self.cdr = self.cdr.squeeze(compressor);
- return self.optimize(compressor);
- });
-
AST_Seq.DEFMETHOD("optimize", function(compressor){
var self = this;
if (compressor.option("cascade")) {
return self;
});
- SQUEEZE(AST_Dot, function(self, compressor){
- self = self.clone();
- self.expression = self.expression.squeeze(compressor);
- return self;
- });
-
- SQUEEZE(AST_Sub, function(self, compressor){
- self = self.clone();
- self.expression = self.expression.squeeze(compressor);
- var prop = self.property = self.property.squeeze(compressor);
- if (prop instanceof AST_String && compressor.option("properties")) {
- prop = prop.getValue();
- if (is_identifier(prop)) {
- self = new AST_Dot(self);
- self.property = prop;
- }
- }
- return self;
- });
-
- SQUEEZE(AST_Unary, function(self, compressor){
- self = self.clone();
- self.expression = self.expression.squeeze(compressor);
- return self;
- });
-
- SQUEEZE(AST_UnaryPrefix, function(self, compressor){
- self = self.clone();
- self.expression = self.expression.squeeze(compressor);
- return self.optimize(compressor);
- });
-
AST_UnaryPrefix.DEFMETHOD("optimize", function(compressor){
var self = this;
var e = self.expression;
return self.evaluate(compressor)[0];
});
- SQUEEZE(AST_Binary, function(self, compressor){
- self = self.clone();
- self.left = self.left.squeeze(compressor);
- self.right = self.right.squeeze(compressor);
- return self.optimize(compressor);
- });
-
AST_Binary.DEFMETHOD("optimize", function(compressor){
if (compressor.option("comparations")) switch (this.operator) {
case "===":
return self;
});
- SQUEEZE(AST_SymbolRef, function(self, compressor){
- return self.optimize(compressor);
- });
-
AST_SymbolRef.DEFMETHOD("optimize", function(compressor){
if (this.undeclared()) switch (this.name) {
case "undefined":
return this;
});
- SQUEEZE(AST_Undefined, function(self, compressor){
- return self.optimize(compressor);
- });
-
AST_Undefined.DEFMETHOD("optimize", function(compressor){
if (compressor.option("unsafe")) {
var scope = compressor.find_parent(AST_Scope);
return this;
});
- SQUEEZE(AST_Conditional, function(self, compressor){
- self = self.clone();
- self.condition = self.condition.squeeze(compressor);
- self.consequent = self.consequent.squeeze(compressor);
- self.alternative = self.alternative.squeeze(compressor);
- return self.optimize(compressor);
- });
-
AST_Conditional.DEFMETHOD("optimize", function(compressor){
var self = this;
if (!compressor.option("conditionals")) return self;
return self;
});
- SQUEEZE(AST_Array, function(self, compressor){
- self = self.clone();
- self.elements = do_list(self.elements, compressor);
- return self;
- });
-
- SQUEEZE(AST_Object, function(self, compressor){
- self = self.clone();
- self.properties = do_list(self.properties, compressor);
- return self;
- });
-
- SQUEEZE(AST_ObjectProperty, function(self, compressor){
- self = self.clone();
- self.value = self.value.squeeze(compressor);
- return self;
- });
-
- SQUEEZE(AST_Boolean, function(self, compressor){
- return self.optimize(compressor);
- });
-
AST_Boolean.DEFMETHOD("optimize", function(compressor){
if (compressor.option("booleans")) {
var p = compressor.parent();
return this;
});
+ /* -----[ node squeezers ]----- */
+
+ function SQUEEZE(nodetype, squeeze) {
+ nodetype.DEFMETHOD("squeeze", function(compressor){
+ compressor.push_node(this);
+ var new_node = squeeze(this, compressor);
+ compressor.pop_node();
+ return new_node !== undefined ? new_node : this;
+ });
+ };
+
+ SQUEEZE(AST_Directive, function(self, compressor){
+ return self.optimize(compressor);
+ });
+
+ SQUEEZE(AST_Debugger, function(self, compressor){
+ return self.optimize(compressor);
+ });
+
+ SQUEEZE(AST_LabeledStatement, function(self, compressor){
+ self = self.clone();
+ self.body = self.body.squeeze(compressor);
+ return self.optimize(compressor);
+ });
+
+ SQUEEZE(AST_Statement, function(self, compressor){
+ self = self.clone();
+ self.body = self.body.squeeze(compressor);
+ return self;
+ });
+
+ SQUEEZE(AST_BlockStatement, function(self, compressor){
+ self = self.clone();
+ self.body = do_list(self.body, compressor);
+ return self.optimize(compressor);
+ });
+
+ SQUEEZE(AST_Block, function(self, compressor){
+ self = self.clone();
+ self.body = do_list(self.body, compressor);
+ return self.optimize(compressor);
+ });
+
+ SQUEEZE(AST_Scope, function(self, compressor){
+ self = self.clone().hoist_declarations(compressor);
+ self.body = do_list(self.body, compressor);
+ return self.optimize(compressor);
+ });
+
+ SQUEEZE(AST_SimpleStatement, function(self, compressor){
+ self = self.clone();
+ self.body = self.body.squeeze(compressor);
+ return self.optimize(compressor);
+ });
+
+ SQUEEZE(AST_EmptyStatement, function(self, compressor){
+ return self;
+ });
+
+ SQUEEZE(AST_DWLoop, function(self, compressor){
+ self = self.clone();
+ self.condition = self.condition.squeeze(compressor);
+ self.body = self.body.squeeze(compressor);
+ return self.optimize(compressor);
+ });
+
+ SQUEEZE(AST_For, function(self, compressor){
+ self = self.clone();
+ if (self.init) self.init = self.init.squeeze(compressor);
+ if (self.condition) self.condition = self.condition.squeeze(compressor);
+ if (self.step) self.step = self.step.squeeze(compressor);
+ self.body = self.body.squeeze(compressor);
+ return self.optimize(compressor);
+ });
+
+ SQUEEZE(AST_ForIn, function(self, compressor){
+ self = self.clone();
+ self.init = self.init.squeeze(compressor);
+ self.object = self.object.squeeze(compressor);
+ self.body = self.body.squeeze(compressor);
+ return self;
+ });
+
+ SQUEEZE(AST_With, function(self, compressor){
+ self = self.clone();
+ self.expression = self.expression.squeeze(compressor);
+ self.body = self.body.squeeze(compressor);
+ return self;
+ });
+
+ SQUEEZE(AST_Exit, function(self, compressor){
+ self = self.clone();
+ if (self.value) self.value = self.value.squeeze(compressor);
+ return self;
+ });
+
+ SQUEEZE(AST_LoopControl, function(self, compressor){
+ self = self.clone();
+ if (self.label) self.label = self.label.squeeze(compressor);
+ return self;
+ });
+
+ SQUEEZE(AST_If, function(self, compressor){
+ self = self.clone();
+ self.condition = self.condition.squeeze(compressor);
+ self.body = self.body.squeeze(compressor);
+ if (self.alternative)
+ self.alternative = self.alternative.squeeze(compressor);
+ return self.optimize(compressor);
+ });
+
+ SQUEEZE(AST_Switch, function(self, compressor){
+ self = self.clone();
+ self.expression = self.expression.squeeze(compressor);
+ self.body = self.body.squeeze(compressor);
+ return self.optimize(compressor);
+ });
+
+ SQUEEZE(AST_Case, function(self, compressor){
+ self = self.clone();
+ self.expression = self.expression.squeeze(compressor);
+ self.body = do_list(self.body, compressor);
+ return self.optimize(compressor);
+ });
+
+ SQUEEZE(AST_Try, function(self, compressor){
+ self = self.clone();
+ self.body = do_list(self.body, compressor);
+ if (self.bcatch) self.bcatch = self.bcatch.squeeze(compressor);
+ if (self.bfinally) self.bfinally = self.bfinally.squeeze(compressor);
+ return self.optimize(compressor);
+ });
+
+ SQUEEZE(AST_Definitions, function(self, compressor){
+ self = self.clone();
+ self.definitions = do_list(self.definitions, compressor);
+ return self.optimize(compressor);
+ });
+
+ SQUEEZE(AST_VarDef, function(self, compressor){
+ self = self.clone();
+ if (self.value) self.value = self.value.squeeze(compressor);
+ return self;
+ });
+
+ SQUEEZE(AST_Lambda, function(self, compressor){
+ self = self.clone().hoist_declarations(compressor);
+ if (self.name) self.name = self.name.squeeze(compressor);
+ self.argnames = do_list(self.argnames, compressor);
+ self.body = do_list(self.body, compressor);
+ return self.optimize(compressor);
+ });
+
+ SQUEEZE(AST_Call, function(self, compressor){
+ self = self.clone();
+ self.expression = self.expression.squeeze(compressor);
+ self.args = do_list(self.args, compressor);
+ return self.optimize(compressor);
+ });
+
+ SQUEEZE(AST_Seq, function(self, compressor){
+ self = self.clone();
+ self.car = self.car.squeeze(compressor);
+ self.cdr = self.cdr.squeeze(compressor);
+ return self.optimize(compressor);
+ });
+
+ SQUEEZE(AST_Dot, function(self, compressor){
+ self = self.clone();
+ self.expression = self.expression.squeeze(compressor);
+ return self;
+ });
+
+ SQUEEZE(AST_Sub, function(self, compressor){
+ self = self.clone();
+ self.expression = self.expression.squeeze(compressor);
+ var prop = self.property = self.property.squeeze(compressor);
+ if (prop instanceof AST_String && compressor.option("properties")) {
+ prop = prop.getValue();
+ if (is_identifier(prop)) {
+ self = new AST_Dot(self);
+ self.property = prop;
+ }
+ }
+ return self;
+ });
+
+ SQUEEZE(AST_Unary, function(self, compressor){
+ self = self.clone();
+ self.expression = self.expression.squeeze(compressor);
+ return self;
+ });
+
+ SQUEEZE(AST_UnaryPrefix, function(self, compressor){
+ self = self.clone();
+ self.expression = self.expression.squeeze(compressor);
+ return self.optimize(compressor);
+ });
+
+ SQUEEZE(AST_Binary, function(self, compressor){
+ self = self.clone();
+ self.left = self.left.squeeze(compressor);
+ self.right = self.right.squeeze(compressor);
+ return self.optimize(compressor);
+ });
+
+ SQUEEZE(AST_SymbolRef, function(self, compressor){
+ return self.optimize(compressor);
+ });
+
+ SQUEEZE(AST_Undefined, function(self, compressor){
+ return self.optimize(compressor);
+ });
+
+ SQUEEZE(AST_Conditional, function(self, compressor){
+ self = self.clone();
+ self.condition = self.condition.squeeze(compressor);
+ self.consequent = self.consequent.squeeze(compressor);
+ self.alternative = self.alternative.squeeze(compressor);
+ return self.optimize(compressor);
+ });
+
+ SQUEEZE(AST_Array, function(self, compressor){
+ self = self.clone();
+ self.elements = do_list(self.elements, compressor);
+ return self;
+ });
+
+ SQUEEZE(AST_Object, function(self, compressor){
+ self = self.clone();
+ self.properties = do_list(self.properties, compressor);
+ return self;
+ });
+
+ SQUEEZE(AST_ObjectProperty, function(self, compressor){
+ self = self.clone();
+ self.value = self.value.squeeze(compressor);
+ return self;
+ });
+
+ SQUEEZE(AST_Boolean, function(self, compressor){
+ return self.optimize(compressor);
+ });
+
})();
public / UglifyJS.git / commitdiff