| /* |
| * Copyright (C) 2017 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. 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 APPLE INC. ``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 APPLE INC. OR |
| * CONTRIBUTORS 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"; |
| |
| class StructType extends Type { |
| constructor(origin, name, typeParameters) |
| { |
| super(); |
| this._origin = origin; |
| this._name = name; |
| this._typeParameters = typeParameters; |
| this._fields = new Map(); |
| } |
| |
| add(field) |
| { |
| field.struct = this; |
| if (this._fields.has(field.name)) |
| throw new WTypeError(field.origin.originString, "Duplicate field name: " + field.name); |
| this._fields.set(field.name, field); |
| } |
| |
| get name() { return this._name; } |
| get origin() { return this._origin; } |
| get typeParameters() { return this._typeParameters; } |
| |
| get fieldNames() { return this._fields.keys(); } |
| fieldByName(name) { return this._fields.get(name); } |
| get fields() { return this._fields.values(); } |
| get fieldMap() { return this._fields; } |
| get isPrimitive() |
| { |
| let result = true; |
| for (let field of this.fields) |
| result &= field.type.isPrimitive; |
| return result; |
| } |
| |
| instantiate(typeArguments = null) |
| { |
| let substitution = null; |
| let typeParameters = this.typeParameters; |
| |
| if (typeArguments) { |
| if (typeArguments.length != this.typeParameters.length) |
| throw new WTypeError(this.origin.originString, "Wrong number of type arguments to instantiation"); |
| |
| substitution = new Substitution(this.typeParameters, typeArguments); |
| typeParameters = []; |
| } |
| |
| let instantiateImmediates = new InstantiateImmediates(); |
| let result = new StructType(this.origin, this.name, typeParameters); |
| for (let field of this.fields) { |
| let newField = field; |
| if (substitution) |
| newField = newField.visit(substitution); |
| newField = newField.visit(instantiateImmediates); |
| result.add(newField); |
| } |
| |
| return result; |
| } |
| |
| populateDefaultValue(buffer, offset) |
| { |
| if (this.size == null) |
| throw new Error("Struct does not have layout: " + this + " " + describe(this)); |
| for (let field of this.fields) |
| field.type.populateDefaultValue(buffer, offset + field.offset); |
| } |
| |
| toString() |
| { |
| return "struct " + this.name + "<" + this.typeParameters + "> { " + Array.from(this.fields).join("; ") + "; }"; |
| } |
| } |