1 /*
2  * Copyright (C) 2016 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #include "FunctionDeclaration.h"
18 #include "VarDeclaration.h"
19 #include "Type.h"
20 
21 #include <hidl-util/StringHelper.h>
22 
23 namespace android {
24 
25 FunctionDeclaration::FunctionDeclaration(Type* type,
26                   const std::string &name,
27                   std::vector<Declaration *> *params)
28     : Declaration(""),
29       mType(type),
30       mParams(params)
31     {
32         setName(name);
33     }
34 
35 FunctionDeclaration::~FunctionDeclaration() {
36     delete mType;
37 
38     if(mParams != nullptr) {
39         for(auto* param : *mParams) {
40             delete param;
41         }
42     }
43     delete mParams;
44 }
45 
46 void FunctionDeclaration::setName(const std::string &name) {
47     Declaration::setName(name);
48     forceCamelCase();
49 }
50 
51 const Type* FunctionDeclaration::getType() const {
52     return mType;
53 }
54 
55 void FunctionDeclaration::generateSource(Formatter &out) const {
56     out << getName();
57 
58     generateParams(out);
59 
60     if (!getType()->isVoid()) {
61         out << " generates ("
62             << getType()->decorateName(getName() + "Ret")
63             << ")";
64     }
65 
66     out << ";\n";
67 }
68 
69 void FunctionDeclaration::generateParameterSource(Formatter &out) const {
70     out << getType()->decorateName("(*" + getName() + ")");
71 
72     generateParams(out);
73 }
74 
75 void FunctionDeclaration::processContents(AST &) {
76     if (mParams->size() == 1 &&
77         (*mParams)[0]->decType() == VarDeclaration::type()) {
78 
79         VarDeclaration* var = (VarDeclaration *)(*mParams)[0];
80         if (var->getType()->isVoid()) {
81             mParams->clear();
82         }
83     }
84 }
85 
86 void FunctionDeclaration::generateParams(Formatter &out) const {
87     out << "(";
88 
89     for (auto it = mParams->begin(); it != mParams->end(); ++it) {
90         if (it != mParams->begin()) {
91             out << ", ";
92         }
93 
94         (*it)->generateParameterSource(out);
95     }
96 
97     out << ")";
98 }
99 
100 } //namespace android