MACHIN

28/node_modules/uglify-js/lib/transform.js

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+/***********************************************************************
+
+  A JavaScript tokenizer / parser / beautifier / compressor.
+  https://github.com/mishoo/UglifyJS
+
+  -------------------------------- (C) ---------------------------------
+
+                           Author: Mihai Bazon
+                         <mihai.bazon@gmail.com>
+                       http://mihai.bazon.net/blog
+
+  Distributed under the BSD license:
+
+    Copyright 2012 (c) Mihai Bazon <mihai.bazon@gmail.com>
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+
+        * Redistributions of source code must retain the above
+          copyright notice, this list of conditions and the following
+          disclaimer.
+
+        * Redistributions in binary form must reproduce the above
+          copyright notice, this list of conditions and the following
+          disclaimer in the documentation and/or other materials
+          provided with the distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
+    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
+    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+    OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+    TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+    THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+    SUCH DAMAGE.
+
+ ***********************************************************************/
+
+"use strict";
+
+function TreeTransformer(before, after) {
+    TreeWalker.call(this);
+    this.before = before;
+    this.after = after;
+}
+TreeTransformer.prototype = new TreeWalker;
+
+(function(DEF) {
+    function do_list(list, tw) {
+        return List(list, function(node) {
+            return node.transform(tw, true);
+        });
+    }
+
+    DEF(AST_Node, noop);
+    DEF(AST_LabeledStatement, function(self, tw) {
+        self.label = self.label.transform(tw);
+        self.body = self.body.transform(tw);
+    });
+    DEF(AST_SimpleStatement, function(self, tw) {
+        self.body = self.body.transform(tw);
+    });
+    DEF(AST_Block, function(self, tw) {
+        self.body = do_list(self.body, tw);
+    });
+    DEF(AST_Do, function(self, tw) {
+        self.body = self.body.transform(tw);
+        self.condition = self.condition.transform(tw);
+    });
+    DEF(AST_While, function(self, tw) {
+        self.condition = self.condition.transform(tw);
+        self.body = self.body.transform(tw);
+    });
+    DEF(AST_For, function(self, tw) {
+        if (self.init) self.init = self.init.transform(tw);
+        if (self.condition) self.condition = self.condition.transform(tw);
+        if (self.step) self.step = self.step.transform(tw);
+        self.body = self.body.transform(tw);
+    });
+    DEF(AST_ForEnumeration, function(self, tw) {
+        self.init = self.init.transform(tw);
+        self.object = self.object.transform(tw);
+        self.body = self.body.transform(tw);
+    });
+    DEF(AST_With, function(self, tw) {
+        self.expression = self.expression.transform(tw);
+        self.body = self.body.transform(tw);
+    });
+    DEF(AST_Exit, function(self, tw) {
+        if (self.value) self.value = self.value.transform(tw);
+    });
+    DEF(AST_LoopControl, function(self, tw) {
+        if (self.label) self.label = self.label.transform(tw);
+    });
+    DEF(AST_If, function(self, tw) {
+        self.condition = self.condition.transform(tw);
+        self.body = self.body.transform(tw);
+        if (self.alternative) self.alternative = self.alternative.transform(tw);
+    });
+    DEF(AST_Switch, function(self, tw) {
+        self.expression = self.expression.transform(tw);
+        self.body = do_list(self.body, tw);
+    });
+    DEF(AST_Case, function(self, tw) {
+        self.expression = self.expression.transform(tw);
+        self.body = do_list(self.body, tw);
+    });
+    DEF(AST_Try, function(self, tw) {
+        self.body = do_list(self.body, tw);
+        if (self.bcatch) self.bcatch = self.bcatch.transform(tw);
+        if (self.bfinally) self.bfinally = self.bfinally.transform(tw);
+    });
+    DEF(AST_Catch, function(self, tw) {
+        if (self.argname) self.argname = self.argname.transform(tw);
+        self.body = do_list(self.body, tw);
+    });
+    DEF(AST_Definitions, function(self, tw) {
+        self.definitions = do_list(self.definitions, tw);
+    });
+    DEF(AST_VarDef, function(self, tw) {
+        self.name = self.name.transform(tw);
+        if (self.value) self.value = self.value.transform(tw);
+    });
+    DEF(AST_DefaultValue, function(self, tw) {
+        self.name = self.name.transform(tw);
+        self.value = self.value.transform(tw);
+    });
+    DEF(AST_Lambda, function(self, tw) {
+        if (self.name) self.name = self.name.transform(tw);
+        self.argnames = do_list(self.argnames, tw);
+        if (self.rest) self.rest = self.rest.transform(tw);
+        self.body = do_list(self.body, tw);
+    });
+    function transform_arrow(self, tw) {
+        self.argnames = do_list(self.argnames, tw);
+        if (self.rest) self.rest = self.rest.transform(tw);
+        if (self.value) {
+            self.value = self.value.transform(tw);
+        } else {
+            self.body = do_list(self.body, tw);
+        }
+    }
+    DEF(AST_Arrow, transform_arrow);
+    DEF(AST_AsyncArrow, transform_arrow);
+    DEF(AST_Class, function(self, tw) {
+        if (self.name) self.name = self.name.transform(tw);
+        if (self.extends) self.extends = self.extends.transform(tw);
+        self.properties = do_list(self.properties, tw);
+    });
+    DEF(AST_ClassProperty, function(self, tw) {
+        if (self.key instanceof AST_Node) self.key = self.key.transform(tw);
+        if (self.value) self.value = self.value.transform(tw);
+    });
+    DEF(AST_Call, function(self, tw) {
+        self.expression = self.expression.transform(tw);
+        self.args = do_list(self.args, tw);
+    });
+    DEF(AST_Sequence, function(self, tw) {
+        self.expressions = do_list(self.expressions, tw);
+    });
+    DEF(AST_Await, function(self, tw) {
+        self.expression = self.expression.transform(tw);
+    });
+    DEF(AST_Yield, function(self, tw) {
+        if (self.expression) self.expression = self.expression.transform(tw);
+    });
+    DEF(AST_Dot, function(self, tw) {
+        self.expression = self.expression.transform(tw);
+    });
+    DEF(AST_Sub, function(self, tw) {
+        self.expression = self.expression.transform(tw);
+        self.property = self.property.transform(tw);
+    });
+    DEF(AST_Spread, function(self, tw) {
+        self.expression = self.expression.transform(tw);
+    });
+    DEF(AST_Unary, function(self, tw) {
+        self.expression = self.expression.transform(tw);
+    });
+    DEF(AST_Binary, function(self, tw) {
+        self.left = self.left.transform(tw);
+        self.right = self.right.transform(tw);
+    });
+    DEF(AST_Conditional, function(self, tw) {
+        self.condition = self.condition.transform(tw);
+        self.consequent = self.consequent.transform(tw);
+        self.alternative = self.alternative.transform(tw);
+    });
+    DEF(AST_Array, function(self, tw) {
+        self.elements = do_list(self.elements, tw);
+    });
+    DEF(AST_DestructuredArray, function(self, tw) {
+        self.elements = do_list(self.elements, tw);
+        if (self.rest) self.rest = self.rest.transform(tw);
+    });
+    DEF(AST_DestructuredKeyVal, function(self, tw) {
+        if (self.key instanceof AST_Node) self.key = self.key.transform(tw);
+        self.value = self.value.transform(tw);
+    });
+    DEF(AST_DestructuredObject, function(self, tw) {
+        self.properties = do_list(self.properties, tw);
+        if (self.rest) self.rest = self.rest.transform(tw);
+    });
+    DEF(AST_Object, function(self, tw) {
+        self.properties = do_list(self.properties, tw);
+    });
+    DEF(AST_ObjectProperty, function(self, tw) {
+        if (self.key instanceof AST_Node) self.key = self.key.transform(tw);
+        self.value = self.value.transform(tw);
+    });
+    DEF(AST_ExportDeclaration, function(self, tw) {
+        self.body = self.body.transform(tw);
+    });
+    DEF(AST_ExportDefault, function(self, tw) {
+        self.body = self.body.transform(tw);
+    });
+    DEF(AST_ExportReferences, function(self, tw) {
+        self.properties = do_list(self.properties, tw);
+    });
+    DEF(AST_Import, function(self, tw) {
+        if (self.all) self.all = self.all.transform(tw);
+        if (self.default) self.default = self.default.transform(tw);
+        if (self.properties) self.properties = do_list(self.properties, tw);
+    });
+    DEF(AST_Template, function(self, tw) {
+        if (self.tag) self.tag = self.tag.transform(tw);
+        self.expressions = do_list(self.expressions, tw);
+    });
+})(function(node, descend) {
+    node.DEFMETHOD("transform", function(tw, in_list) {
+        var x, y;
+        tw.push(this);
+        if (tw.before) x = tw.before(this, descend, in_list);
+        if (typeof x === "undefined") {
+            x = this;
+            descend(x, tw);
+            if (tw.after) {
+                y = tw.after(x, in_list);
+                if (typeof y !== "undefined") x = y;
+            }
+        }
+        tw.pop();
+        return x;
+    });
+});