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author | Minteck <contact@minteck.org> | 2021-12-21 16:52:28 +0100 |
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committer | Minteck <contact@minteck.org> | 2021-12-21 16:52:28 +0100 |
commit | 46e43f4bde4a35785b4997b81e86cd19f046b69b (patch) | |
tree | c53c2f826f777f9d6b2d249dab556feb72a6c3a6 /src/node_modules/terser/lib/transform.js | |
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Diffstat (limited to 'src/node_modules/terser/lib/transform.js')
-rw-r--r-- | src/node_modules/terser/lib/transform.js | 318 |
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diff --git a/src/node_modules/terser/lib/transform.js b/src/node_modules/terser/lib/transform.js new file mode 100644 index 0000000..9aa9ffc --- /dev/null +++ b/src/node_modules/terser/lib/transform.js @@ -0,0 +1,318 @@ +/*********************************************************************** + + A JavaScript tokenizer / parser / beautifier / compressor. + https://github.com/mishoo/UglifyJS2 + + -------------------------------- (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"; + +import { + AST_Array, + AST_Await, + AST_Binary, + AST_Block, + AST_Call, + AST_Case, + AST_Catch, + AST_Chain, + AST_Class, + AST_Conditional, + AST_Definitions, + AST_Destructuring, + AST_Do, + AST_Dot, + AST_Exit, + AST_Expansion, + AST_Export, + AST_For, + AST_ForIn, + AST_If, + AST_Import, + AST_LabeledStatement, + AST_Lambda, + AST_LoopControl, + AST_NameMapping, + AST_Node, + AST_Number, + AST_Object, + AST_ObjectProperty, + AST_PrefixedTemplateString, + AST_Sequence, + AST_SimpleStatement, + AST_Sub, + AST_Switch, + AST_TemplateString, + AST_Try, + AST_Unary, + AST_VarDef, + AST_While, + AST_With, + AST_Yield, +} from "./ast.js"; +import { + MAP, + noop, +} from "./utils/index.js"; + +function def_transform(node, descend) { + node.DEFMETHOD("transform", function(tw, in_list) { + let transformed = undefined; + tw.push(this); + if (tw.before) transformed = tw.before(this, descend, in_list); + if (transformed === undefined) { + transformed = this; + descend(transformed, tw); + if (tw.after) { + const after_ret = tw.after(transformed, in_list); + if (after_ret !== undefined) transformed = after_ret; + } + } + tw.pop(); + return transformed; + }); +} + +function do_list(list, tw) { + return MAP(list, function(node) { + return node.transform(tw, true); + }); +} + +def_transform(AST_Node, noop); + +def_transform(AST_LabeledStatement, function(self, tw) { + self.label = self.label.transform(tw); + self.body = self.body.transform(tw); +}); + +def_transform(AST_SimpleStatement, function(self, tw) { + self.body = self.body.transform(tw); +}); + +def_transform(AST_Block, function(self, tw) { + self.body = do_list(self.body, tw); +}); + +def_transform(AST_Do, function(self, tw) { + self.body = self.body.transform(tw); + self.condition = self.condition.transform(tw); +}); + +def_transform(AST_While, function(self, tw) { + self.condition = self.condition.transform(tw); + self.body = self.body.transform(tw); +}); + +def_transform(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_transform(AST_ForIn, function(self, tw) { + self.init = self.init.transform(tw); + self.object = self.object.transform(tw); + self.body = self.body.transform(tw); +}); + +def_transform(AST_With, function(self, tw) { + self.expression = self.expression.transform(tw); + self.body = self.body.transform(tw); +}); + +def_transform(AST_Exit, function(self, tw) { + if (self.value) self.value = self.value.transform(tw); +}); + +def_transform(AST_LoopControl, function(self, tw) { + if (self.label) self.label = self.label.transform(tw); +}); + +def_transform(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_transform(AST_Switch, function(self, tw) { + self.expression = self.expression.transform(tw); + self.body = do_list(self.body, tw); +}); + +def_transform(AST_Case, function(self, tw) { + self.expression = self.expression.transform(tw); + self.body = do_list(self.body, tw); +}); + +def_transform(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_transform(AST_Catch, function(self, tw) { + if (self.argname) self.argname = self.argname.transform(tw); + self.body = do_list(self.body, tw); +}); + +def_transform(AST_Definitions, function(self, tw) { + self.definitions = do_list(self.definitions, tw); +}); + +def_transform(AST_VarDef, function(self, tw) { + self.name = self.name.transform(tw); + if (self.value) self.value = self.value.transform(tw); +}); + +def_transform(AST_Destructuring, function(self, tw) { + self.names = do_list(self.names, tw); +}); + +def_transform(AST_Lambda, function(self, tw) { + if (self.name) self.name = self.name.transform(tw); + self.argnames = do_list(self.argnames, tw); + if (self.body instanceof AST_Node) { + self.body = self.body.transform(tw); + } else { + self.body = do_list(self.body, tw); + } +}); + +def_transform(AST_Call, function(self, tw) { + self.expression = self.expression.transform(tw); + self.args = do_list(self.args, tw); +}); + +def_transform(AST_Sequence, function(self, tw) { + const result = do_list(self.expressions, tw); + self.expressions = result.length + ? result + : [new AST_Number({ value: 0 })]; +}); + +def_transform(AST_Dot, function(self, tw) { + self.expression = self.expression.transform(tw); +}); + +def_transform(AST_Sub, function(self, tw) { + self.expression = self.expression.transform(tw); + self.property = self.property.transform(tw); +}); + +def_transform(AST_Chain, function(self, tw) { + self.expression = self.expression.transform(tw); +}); + +def_transform(AST_Yield, function(self, tw) { + if (self.expression) self.expression = self.expression.transform(tw); +}); + +def_transform(AST_Await, function(self, tw) { + self.expression = self.expression.transform(tw); +}); + +def_transform(AST_Unary, function(self, tw) { + self.expression = self.expression.transform(tw); +}); + +def_transform(AST_Binary, function(self, tw) { + self.left = self.left.transform(tw); + self.right = self.right.transform(tw); +}); + +def_transform(AST_Conditional, function(self, tw) { + self.condition = self.condition.transform(tw); + self.consequent = self.consequent.transform(tw); + self.alternative = self.alternative.transform(tw); +}); + +def_transform(AST_Array, function(self, tw) { + self.elements = do_list(self.elements, tw); +}); + +def_transform(AST_Object, function(self, tw) { + self.properties = do_list(self.properties, tw); +}); + +def_transform(AST_ObjectProperty, 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_transform(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_transform(AST_Expansion, function(self, tw) { + self.expression = self.expression.transform(tw); +}); + +def_transform(AST_NameMapping, function(self, tw) { + self.foreign_name = self.foreign_name.transform(tw); + self.name = self.name.transform(tw); +}); + +def_transform(AST_Import, function(self, tw) { + if (self.imported_name) self.imported_name = self.imported_name.transform(tw); + if (self.imported_names) do_list(self.imported_names, tw); + self.module_name = self.module_name.transform(tw); +}); + +def_transform(AST_Export, function(self, tw) { + if (self.exported_definition) self.exported_definition = self.exported_definition.transform(tw); + if (self.exported_value) self.exported_value = self.exported_value.transform(tw); + if (self.exported_names) do_list(self.exported_names, tw); + if (self.module_name) self.module_name = self.module_name.transform(tw); +}); + +def_transform(AST_TemplateString, function(self, tw) { + self.segments = do_list(self.segments, tw); +}); + +def_transform(AST_PrefixedTemplateString, function(self, tw) { + self.prefix = self.prefix.transform(tw); + self.template_string = self.template_string.transform(tw); +}); + |