122 lines
3.4 KiB
JavaScript
122 lines
3.4 KiB
JavaScript
/*
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* Copyright (C) 2017 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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"use strict";
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// This finds type and value expressions, but skips type and value declarations.
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class ExpressionFinder extends Visitor {
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constructor(callback)
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{
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super();
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this._callback = callback;
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}
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visitFunc(node)
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{
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this._callback(node.returnType);
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for (let typeParameter of node.typeParameters)
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typeParameter.visit(this);
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for (let parameter of node.parameters)
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parameter.visit(this);
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}
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visitFuncParameter(node)
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{
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this._callback(node.type);
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}
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visitConstexprTypeParameter(node)
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{
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this._callback(node.type);
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}
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visitAssignment(node)
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{
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this._callback(node);
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}
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visitReadModifyWriteExpression(node)
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{
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this._callback(node);
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}
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visitIdentityExpression(node)
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{
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this._callback(node);
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}
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visitCallExpression(node)
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{
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this._callback(node);
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}
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visitReturn(node)
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{
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if (node.value)
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this._callback(node.value);
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}
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visitWhileLoop(node)
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{
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this._callback(node.conditional);
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node.body.visit(this);
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}
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visitDoWhileLoop(node)
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{
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node.body.visit(this);
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this._callback(node.conditional);
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}
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visitIfStatement(node)
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{
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this._callback(node.conditional);
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node.body.visit(this);
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if (node.elseBody)
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node.elseBody.visit(this);
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}
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visitForLoop(node)
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{
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// Initialization is a statement, not an expression. If it's an assignment or variableDecl, we'll
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// catch it and redirect to the callback.
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if (node.initialization)
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node.initialization.visit(this);
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if (node.condition)
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this._callback(node.condition);
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if (node.increment)
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this._callback(node.increment);
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node.body.visit(this);
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}
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visitVariableDecl(node)
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{
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this._callback(node.type);
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if (node.initializer)
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this._callback(node.initializer);
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}
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}
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