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java-class-tools

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Read and write java class files in node or browser.

github.com/leonardosnt/java-class-tools

leonardosnt/java-class-tools

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/*! * https://github.com/leonardosnt/java-class-tools * * Copyright (C) 2017-2019 leonardosnt * Licensed under the MIT License. See LICENSE file in the project root for full license information. */ !function(e,t){"object"==typeof exports&&"object"==typeof module?module.exports=t():"function"==typeof define&&define.amd?define([],t):"object"==typeof exports?exports.JavaClassTools=t():e.JavaClassTools=t()}(window,function(){return r={},n.m=i=[function(e,t,i){"use strict";i.r(t);var r=i(1);i.d(t,"JavaClassFileReader",function(){return r.default});var n=i(7);i.d(t,"JavaClassFileWriter",function(){return n.default});var s=i(5);i.d(t,"ConstantType",function(){return s.default});var f=i(8);i.d(t,"Opcode",function(){return f.default});var a=i(9);i.d(t,"Modifier",function(){return a.default});var o=i(10);i.d(t,"Instruction",function(){return o.Instruction}),i.d(t,"InstructionParser",function(){return o.InstructionParser})},function(e,a,o){"use strict";o.r(a),function(i){var e=o(3),r=o.n(e),n=o(5);function s(e){return(s="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":typeof e})(e)}function f(e,t){for(var i=0;i<t.length;i++){var r=t[i];r.enumerable=r.enumerable||!1,r.configurable=!0,"value"in r&&(r.writable=!0),Object.defineProperty(e,r.key,r)}}var t=function(){function e(){!function(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}(this,e)}return function(e,t,i){t&&f(e.prototype,t),i&&f(e,i)}(e,[{key:"read",value:function(e){if(null==e)throw TypeError("source cannot be null or undefined");if("string"==typeof e)return this.readFromFile(e);if(this.buf=r.a.wrap(e),this.classFile=new function(){},3405691582!==this.buf.readUint32())throw Error("Invalid MAGIC value");this.classFile.minor_version=this.buf.readUint16(),this.classFile.major_version=this.buf.readUint16(),this.classFile.constant_pool_count=this.buf.readUint16(),this.classFile.constant_pool=this._readConstantPool(this.classFile.constant_pool_count-1),this.classFile.access_flags=this.buf.readUint16(),this.classFile.this_class=this.buf.readUint16(),this.classFile.super_class=this.buf.readUint16(),this.classFile.interfaces_count=this.buf.readUint16(),this.classFile.interfaces=this._readInterfaces(this.classFile.interfaces_count),this.classFile.fields_count=this.buf.readUint16(),this.classFile.fields=this._readMemberInfoArray(this.classFile.fields_count),this.classFile.methods_count=this.buf.readUint16(),this.classFile.methods=this._readMemberInfoArray(this.classFile.methods_count),this.classFile.attributes_count=this.buf.readUint16(),this.classFile.attributes=this._readAttributeInfoArray(this.classFile.attributes_count);var t=this.classFile;return delete this.buf,delete this.classFile,t}},{key:"readFromFile",value:function(e){if(void 0===(void 0===i?"undefined":s(i)))throw Error("readFromFile is not supported in the browser.");var t=o(6);return this.read(t.readFileSync(e))}},{key:"_readMemberInfoArray",value:function(e){for(var t=new Array(e),i=0;i<e;i++){var r={access_flags:this.buf.readUint16(),name_index:this.buf.readUint16(),descriptor_index:this.buf.readUint16(),attributes_count:this.buf.readUint16()};r.attributes=this._readAttributeInfoArray(r.attributes_count),t[i]=r}return t}},{key:"_readAttributeInfoArray",value:function(e){for(var t=new Array(e),i=0;i<e;i++)t[i]=this._readAttributeInfo();return t}},{key:"_readVerificationTypeInfo",value:function(){var e={tag:this.buf.readUint8()};return 7===e.tag?e.cpool_index=this.buf.readUint16():8===e.tag&&(e.offset=this.buf.readUint16()),e}},{key:"_readTypeAnnotation",value:function(){var e={target_type:this.buf.readUint8(),target_info:{}};switch(e.target_type){case 0:case 1:e.target_info.type_parameter_index=this.buf.readUint8();break;case 16:e.target_info.supertype_index=this.buf.readUint16();break;case 17:case 18:e.target_info.type_parameter_index=this.buf.readUint8(),e.target_info.bound_index=this.buf.readUint8();break;case 19:case 20:case 21:break;case 22:e.target_info.formal_parameter_index=this.buf.readUint8();break;case 23:e.target_info.throws_type_index=this.buf.readUint16();break;case 64:case 65:e.target_info.table_length=this.buf.readUint16(),e.target_info.table=new Array(e.target_info.table_length);for(var t=0;t<e.target_info.table_length;t++){var i={start_pc:this.buf.readUint16(),length:this.buf.readUint16(),index:this.buf.readUint16()};e.target_info.table[t]=i}break;case 66:e.target_info.exception_table_index=this.buf.readUint16();break;case 67:case 68:case 69:case 70:e.target_info.offset=this.buf.readUint16();break;case 71:case 72:case 73:case 74:case 75:e.target_info.offset=this.buf.readUint16(),e.target_info.type_argument_index=this.buf.readUint8();break;default:throw Error("Unexpected target_type: ".concat(e.target_type))}e.type_path={path_length:this.buf.readUint8()},e.type_path.path=new Array(e.type_path.path_length);for(var r=0;r<e.type_path.path_length;r++)e.type_path.path[r]={type_path_kind:this.buf.readUint8(),type_argument_index:this.buf.readUint8()};e.type_index=this.buf.readUint16(),e.num_element_value_pairs=this.buf.readUint16(),e.element_value_pairs=new Array(e.num_element_value_pairs);for(var n=0;n<e.num_element_value_pairs;n++)e.element_value_pairs[n]={element_name_index:this.buf.readUint16(),element_value:this._readElementValue()};return e}},{key:"_readAttributeInfo",value:function(){var e={attribute_name_index:this.buf.readUint16(),attribute_length:this.buf.readUint32()},t=this.classFile.constant_pool[e.attribute_name_index].bytes;switch(String.fromCharCode.apply(null,t)){case"Deprecated":case"Synthetic":break;case"RuntimeInvisibleAnnotations":case"RuntimeVisibleAnnotations":e.num_annotations=this.buf.readUint16(),e.annotations=new Array(e.num_annotations);for(var i=0;i<e.num_annotations;i++)e.annotations[i]=this._readAttributeAnnotation();break;case"InnerClasses":e.number_of_classes=this.buf.readUint16(),e.classes=new Array(e.number_of_classes);for(var r=0;r<e.number_of_classes;r++)e.classes[r]={inner_class_info_index:this.buf.readUint16(),outer_class_info_index:this.buf.readUint16(),inner_name_index:this.buf.readUint16(),inner_class_access_flags:this.buf.readUint16()};break;case"LocalVariableTable":e.local_variable_table_length=this.buf.readUint16(),e.local_variable_table=new Array(e.local_variable_table_length);for(var n=0;n<e.local_variable_table_length;n++)e.local_variable_table[n]={start_pc:this.buf.readUint16(),length:this.buf.readUint16(),name_index:this.buf.readUint16(),descriptor_index:this.buf.readUint16(),index:this.buf.readUint16()};break;case"LocalVariableTypeTable":e.local_variable_type_table_length=this.buf.readUint16(),e.local_variable_type_table=new Array(e.local_variable_type_table_length);for(var s=0;s<e.local_variable_type_table_length;s++)e.local_variable_type_table[s]={start_pc:this.buf.readUint16(),length:this.buf.readUint16(),name_index:this.buf.readUint16(),signature_index:this.buf.readUint16(),index:this.buf.readUint16()};break;case"RuntimeInvisibleParameterAnnotations":case"RuntimeVisibleParameterAnnotations":e.num_parameters=this.buf.readUint8(),e.parameter_annotations=new Array(e.num_parameters);for(var f=0;f<e.num_parameters;f++){var a={num_annotations:this.buf.readUint16()};a.annotations=new Array(a.num_annotations);for(var o=0;o<a.num_annotations;o++)a.annotations[o]=this._readAttributeAnnotation();e.parameter_annotations[f]=a}break;case"BootstrapMethods":e.num_bootstrap_methods=this.buf.readUint16(),e.bootstrap_methods=new Array(e.num_bootstrap_methods);for(var u=0;u<e.num_bootstrap_methods;u++){var h={bootstrap_method_ref:this.buf.readUint16(),num_bootstrap_arguments:this.buf.readUint16()};h.bootstrap_arguments=new Array(h.num_bootstrap_arguments);for(var l=0;l<h.num_bootstrap_arguments;l++)h.bootstrap_arguments[l]=this.buf.readUint16();e.bootstrap_methods[u]=h}break;case"RuntimeInvisibleTypeAnnotations":case"RuntimeVisibleTypeAnnotations":e.num_annotations=this.buf.readUint16(),e.annotations=new Array(e.num_annotations);for(var b=0;b<e.num_annotations;b++)e.annotations[b]=this._readTypeAnnotation();break;case"SourceDebugExtension":e.debug_extension=new Array(e.attribute_length);for(var c=0;c<e.attribute_length;c++)e.debug_extension[c]=this.buf.readUint8();break;case"SourceFile":e.sourcefile_index=this.buf.readUint16();break;case"EnclosingMethod":e.class_index=this.buf.readUint16(),e.method_index=this.buf.readUint16();break;case"AnnotationDefault":e.default_value=this._readElementValue();break;case"MethodParameters":e.parameters_count=this.buf.readUint8(),e.parameters=new Array(e.parameters_count);for(var d=0;d<e.parameters_count;d++)e.parameters[d]={name_index:this.buf.readUint16(),access_flags:this.buf.readUint16()};break;case"ConstantValue":e.constantvalue_index=this.buf.readUint16();break;case"Signature":e.signature_index=this.buf.readUint16();break;case"StackMap":return this._readStackMapAttribute(e);case"Exceptions":return this._readExceptionsAttribute(e);case"StackMapTable":return this._readStackMapTableAttribute(e);case"Code":return this._readCodeAttribute(e);case"LineNumberTable":return this._readLineNumberTableAttribute(e);case"Module":return this._readModuleAttribute(e);case"ModulePackages":return this._readModulePackagesAttribute(e);case"ModuleMainClass":e.main_class_index=this.buf.readUint16();break;case"NestHost":e.host_class_index=this.buf.readUint16();break;case"NestMembers":e.number_of_classes=this.buf.readUint16(),e.classes=new Array(e.number_of_classes);for(var _=0;_<e.number_of_classes;_++)e.classes[_]=this.buf.readUint16();break;default:e.info=new Array(e.attribute_length);for(var g=0;g<e.attribute_length;g++)e.info[g]=this.buf.readUint8()}return e}},{key:"_readCodeAttribute",value:function(e){e.max_stack=this.buf.readUint16(),e.max_locals=this.buf.readUint16(),e.code_length=this.buf.readUint32(),e.code=new Array(e.code_length);for(var t=0;t<e.code_length;t++)e.code[t]=this.buf.readUint8();e.exception_table_length=this.buf.readUint16(),e.exception_table=new Array(e.exception_table_length);for(var i=0;i<e.exception_table_length;i++)e.exception_table[i]={start_pc:this.buf.readUint16(),end_pc:this.buf.readUint16(),handler_pc:this.buf.readUint16(),catch_type:this.buf.readUint16()};return e.attributes_count=this.buf.readUint16(),e.attributes=this._readAttributeInfoArray(e.attributes_count),e}},{key:"_readLineNumberTableAttribute",value:function(e){e.line_number_table_length=this.buf.readUint16(),e.line_number_table=new Array(e.line_number_table_length);for(var t=0;t<e.line_number_table_length;t++)e.line_number_table[t]={start_pc:this.buf.readUint16(),line_number:this.buf.readUint16()};return e}},{key:"_readStackMapTableAttribute",value:function(e){e.number_of_entries=this.buf.readUint16(),e.entries=new Array(e.number_of_entries);for(var t=0;t<e.number_of_entries;t++){var i={frame_type:this.buf.readUint8()},r=i.frame_type;if(0<=r&&r<=63)e.entries[t]=i;else{if(64<=r&&r<=127)i.stack=[this._readVerificationTypeInfo()];else if(247===i.frame_type)i.offset_delta=this.buf.readUint16(),i.stack=[this._readVerificationTypeInfo()];else if(248<=r&&r<=251)i.offset_delta=this.buf.readUint16();else if(252<=r&&r<=254){var n=r-251;i.offset_delta=this.buf.readUint16(),i.locals=new Array(n);for(var s=0;s<n;s++)i.locals[s]=this._readVerificationTypeInfo()}else if(255===r){i.offset_delta=this.buf.readUint16(),i.number_of_locals=this.buf.readUint16(),i.locals=new Array(i.number_of_locals);for(var f=0;f<i.number_of_locals;f++)i.locals[f]=this._readVerificationTypeInfo();i.number_of_stack_items=this.buf.readUint16(),i.stack=new Array(i.number_of_stack_items);for(var a=0;a<i.number_of_stack_items;a++)i.stack[a]=this._readVerificationTypeInfo()}e.entries[t]=i}}return e}},{key:"_readExceptionsAttribute",value:function(e){e.number_of_exceptions=this.buf.readUint16(),e.exception_index_table=new Array(e.number_of_exceptions);for(var t=0;t<e.number_of_exceptions;t++)e.exception_index_table[t]=this.buf.readUint16();return e}},{key:"_readStackMapAttribute",value:function(e){e.number_of_entries=this.buf.readUint16(),e.entries=new Array(e.number_of_entries);for(var t=0;t<e.number_of_entries;t++){var i={offset:this.buf.readUint16()};i.number_of_locals=this.buf.readUint16(),i.locals=new Array(i.number_of_locals);for(var r=0;r<i.number_of_locals;r++)i.locals[r]=this._readVerificationTypeInfo();i.number_of_stack_items=this.buf.readUint16(),i.stack=new Array(i.number_of_stack_items);for(var n=0;n<i.number_of_stack_items;n++)i.stack[n]=this._readVerificationTypeInfo();e.entries[t]=i}return e}},{key:"_readModuleAttribute",value:function(e){e.module_name_index=this.buf.readUint16(),e.module_flags=this.buf.readUint16(),e.module_version_index=this.buf.readUint16(),e.requires_count=this.buf.readUint16(),e.requires=new Array(e.requires_count);for(var t=0;t<e.requires_count;t++)e.requires[t]={requires_index:this.buf.readUint16(),requires_flags:this.buf.readUint16(),requires_version_index:this.buf.readUint16()};e.exports_count=this.buf.readUint16(),e.exports=new Array(e.exports_count);for(var i=0;i<e.exports_count;i++){var r={exports_index:this.buf.readUint16(),exports_flags:this.buf.readUint16(),exports_to_count:this.buf.readUint16()};r.exports_to_index=new Array(r.exports_to_count);for(var n=0;n<r.exports_to_count;n++)r.exports_to_index[n]=this.buf.readUint16();e.exports[i]=r}e.opens_count=this.buf.readUint16(),e.opens=new Array(e.opens_count);for(var s=0;s<e.opens_count;s++){var f={opens_index:this.buf.readUint16(),opens_flags:this.buf.readUint16(),opens_to_count:this.buf.readUint16()};f.opens_to_index=new Array(f.opens_to_count);for(var a=0;a<f.opens_to_count;a++)f.opens_to_index[a]=this.buf.readUint16();e.opens[s]=f}e.uses_count=this.buf.readUint16(),e.uses_index=new Array(e.uses_count);for(var o=0;o<e.uses_count;o++)e.uses_index[o]=this.buf.readUint16();e.provides_count=this.buf.readUint16(),e.provides=new Array(e.provides_count);for(var u=0;u<e.provides_count;u++){var h={provides_index:this.buf.readUint16(),provides_with_count:this.buf.readUint16()};h.provides_with_index=new Array(h.provides_with_count);for(var l=0;l<h.provides_with_count;l++)h.provides_with_index[l]=this.buf.readUint16();e.provides[u]=h}return e}},{key:"_readModulePackagesAttribute",value:function(e){e.package_count=this.buf.readUint16(),e.package_index=new Array(e.package_count);for(var t=0;t<e.package_count;t++)e.package_index[t]=this.buf.readUint16();return e}},{key:"_readAttributeAnnotation",value:function(){var e={type_index:this.buf.readUint16(),num_element_value_pairs:this.buf.readUint16()};e.element_value_pairs=new Array(e.num_element_value_pairs);for(var t=0;t<e.num_element_value_pairs;t++)e.element_value_pairs[t]={element_name_index:this.buf.readUint16(),element_value:this._readElementValue()};return e}},{key:"_readElementValue",value:function(){var e={tag:this.buf.readUint8(),value:{}};switch(e.tag){case 101:e.value.enum_const_value={type_name_index:this.buf.readUint16(),const_name_index:this.buf.readUint16()};break;case 99:e.value.class_info_index=this.buf.readUint16();break;case 91:for(var t=this.buf.readUint16(),i=new Array(t),r=0;r<t;r++)i[r]=this._readElementValue();e.value.array_value={num_values:t,values:i};break;case 64:e.value.annotation=this._readAttributeAnnotation();break;case 66:case 67:case 68:case 70:case 73:case 74:case 83:case 90:case 115:e.value.const_value_index=this.buf.readUint16();break;default:throw Error("Unexpected tag: ".concat(e.tag))}return e}},{key:"_readInterfaces",value:function(e){for(var t=new Array(e),i=0;i<e;i++)t[i]=this.buf.readUint16();return t}},{key:"_readConstantPool",value:function(e){for(var t=new Array(e),i=1;i<=e;i++){var r=this._readConstantPoolEntry();(t[i]=r).tag!==n.default.LONG&&r.tag!==n.default.DOUBLE||(t[++i]=void 0)}return t}},{key:"_readUtf8PoolEntry",value:function(e){for(var t=this.buf.readUint16(),i=new Array(t),r=0;r<t;r++)i[r]=this.buf.readUint8();return{tag:e,length:t,bytes:i}}},{key:"_readConstantPoolEntry",value:function(){var e=this.buf.readUint8();switch(e){case n.default.UTF8:return this._readUtf8PoolEntry(e);case n.default.INTEGER:case n.default.FLOAT:return{tag:e,bytes:this.buf.readUint32()};case n.default.LONG:case n.default.DOUBLE:return{tag:e,high_bytes:this.buf.readUint32(),low_bytes:this.buf.readUint32()};case n.default.PACKAGE:case n.default.MODULE:case n.default.CLASS:return{tag:e,name_index:this.buf.readUint16()};case n.default.STRING:return{tag:e,string_index:this.buf.readUint16()};case n.default.FIELDREF:case n.default.METHODREF:case n.default.INTERFACE_METHODREF:return{tag:e,class_index:this.buf.readUint16(),name_and_type_index:this.buf.readUint16()};case n.default.NAME_AND_TYPE:return{tag:e,name_index:this.buf.readUint16(),descriptor_index:this.buf.readUint16()};case n.default.METHOD_HANDLE:return{tag:e,reference_kind:this.buf.readUint8(),reference_index:this.buf.readUint16()};case n.default.METHOD_TYPE:return{tag:e,descriptor_index:this.buf.readUint16()};case n.default.DYNAMIC:case n.default.INVOKE_DYNAMIC:return{tag:e,bootstrap_method_attr_index:this.buf.readUint16(),name_and_type_index:this.buf.readUint16()};default:throw Error("Unexpected tag: ".concat(e))}}}]),e}();a.default=t}.call(this,o(2))},function(e,t){var i,r,n=e.exports={};function s(){throw new Error("setTimeout has not been defined")}function f(){throw new Error("clearTimeout has not been defined")}function a(t){if(i===setTimeout)return setTimeout(t,0);if((i===s||!i)&&setTimeout)return i=setTimeout,setTimeout(t,0);try{return 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