| 1 | /*
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| 2 | Copyright (C) 2015 Yusuke Suzuki <utatane.tea@gmail.com>
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| 3 |
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| 4 | Redistribution and use in source and binary forms, with or without
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| 5 | modification, are permitted provided that the following conditions are met:
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| 6 |
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| 7 | * Redistributions of source code must retain the above copyright
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| 8 | notice, this list of conditions and the following disclaimer.
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| 9 | * Redistributions in binary form must reproduce the above copyright
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| 10 | notice, this list of conditions and the following disclaimer in the
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| 11 | documentation and/or other materials provided with the distribution.
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| 12 |
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| 13 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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| 14 | AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 15 | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 16 | ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
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| 17 | DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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| 18 | (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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| 19 | LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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| 20 | ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 21 | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 22 | THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 23 | */
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| 24 |
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| 25 | /**
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| 26 | * A Variable represents a locally scoped identifier. These include arguments to
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| 27 | * functions.
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| 28 | * @constructor Variable
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| 29 | */
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| 30 | class Variable {
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| 31 | constructor(name, scope) {
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| 32 |
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| 33 | /**
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| 34 | * The variable name, as given in the source code.
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| 35 | * @member {string} Variable#name
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| 36 | */
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| 37 | this.name = name;
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| 38 |
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| 39 | /**
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| 40 | * List of defining occurrences of this variable (like in 'var ...'
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| 41 | * statements or as parameter), as AST nodes.
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| 42 | * @member {espree.Identifier[]} Variable#identifiers
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| 43 | */
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| 44 | this.identifiers = [];
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| 45 |
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| 46 | /**
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| 47 | * List of {@link Reference|references} of this variable (excluding parameter entries)
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| 48 | * in its defining scope and all nested scopes. For defining
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| 49 | * occurrences only see {@link Variable#defs}.
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| 50 | * @member {Reference[]} Variable#references
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| 51 | */
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| 52 | this.references = [];
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| 53 |
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| 54 | /**
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| 55 | * List of defining occurrences of this variable (like in 'var ...'
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| 56 | * statements or as parameter), as custom objects.
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| 57 | * @member {Definition[]} Variable#defs
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| 58 | */
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| 59 | this.defs = [];
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| 60 |
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| 61 | this.tainted = false;
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| 62 |
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| 63 | /**
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| 64 | * Whether this is a stack variable.
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| 65 | * @member {boolean} Variable#stack
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| 66 | */
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| 67 | this.stack = true;
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| 68 |
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| 69 | /**
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| 70 | * Reference to the enclosing Scope.
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| 71 | * @member {Scope} Variable#scope
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| 72 | */
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| 73 | this.scope = scope;
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| 74 | }
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| 75 | }
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| 76 |
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| 77 | Variable.CatchClause = "CatchClause";
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| 78 | Variable.Parameter = "Parameter";
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| 79 | Variable.FunctionName = "FunctionName";
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| 80 | Variable.ClassName = "ClassName";
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| 81 | Variable.Variable = "Variable";
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| 82 | Variable.ImportBinding = "ImportBinding";
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| 83 | Variable.ImplicitGlobalVariable = "ImplicitGlobalVariable";
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| 84 |
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| 85 | export default Variable;
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| 86 |
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| 87 | /* vim: set sw=4 ts=4 et tw=80 : */
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