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14 | pmbaty | 1 | //===- TemplateInstCallback.h - Template Instantiation Callback - C++ --===// |
2 | // |
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3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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4 | // See https://llvm.org/LICENSE.txt for license information. |
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5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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6 | // |
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7 | //===---------------------------------------------------------------------===// |
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8 | // |
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9 | // This file defines the TemplateInstantiationCallback class, which is the |
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10 | // base class for callbacks that will be notified at template instantiations. |
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11 | // |
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12 | //===---------------------------------------------------------------------===// |
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13 | |||
14 | #ifndef LLVM_CLANG_SEMA_TEMPLATEINSTCALLBACK_H |
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15 | #define LLVM_CLANG_SEMA_TEMPLATEINSTCALLBACK_H |
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16 | |||
17 | #include "clang/Sema/Sema.h" |
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18 | |||
19 | namespace clang { |
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20 | |||
21 | /// This is a base class for callbacks that will be notified at every |
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22 | /// template instantiation. |
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23 | class TemplateInstantiationCallback { |
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24 | public: |
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25 | virtual ~TemplateInstantiationCallback() = default; |
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26 | |||
27 | /// Called before doing AST-parsing. |
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28 | virtual void initialize(const Sema &TheSema) = 0; |
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29 | |||
30 | /// Called after AST-parsing is completed. |
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31 | virtual void finalize(const Sema &TheSema) = 0; |
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32 | |||
33 | /// Called when instantiation of a template just began. |
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34 | virtual void atTemplateBegin(const Sema &TheSema, |
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35 | const Sema::CodeSynthesisContext &Inst) = 0; |
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36 | |||
37 | /// Called when instantiation of a template is just about to end. |
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38 | virtual void atTemplateEnd(const Sema &TheSema, |
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39 | const Sema::CodeSynthesisContext &Inst) = 0; |
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40 | }; |
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41 | |||
42 | template <class TemplateInstantiationCallbackPtrs> |
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43 | void initialize(TemplateInstantiationCallbackPtrs &Callbacks, |
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44 | const Sema &TheSema) { |
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45 | for (auto &C : Callbacks) { |
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46 | if (C) |
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47 | C->initialize(TheSema); |
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48 | } |
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49 | } |
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50 | |||
51 | template <class TemplateInstantiationCallbackPtrs> |
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52 | void finalize(TemplateInstantiationCallbackPtrs &Callbacks, |
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53 | const Sema &TheSema) { |
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54 | for (auto &C : Callbacks) { |
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55 | if (C) |
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56 | C->finalize(TheSema); |
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57 | } |
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58 | } |
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59 | |||
60 | template <class TemplateInstantiationCallbackPtrs> |
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61 | void atTemplateBegin(TemplateInstantiationCallbackPtrs &Callbacks, |
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62 | const Sema &TheSema, |
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63 | const Sema::CodeSynthesisContext &Inst) { |
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64 | for (auto &C : Callbacks) { |
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65 | if (C) |
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66 | C->atTemplateBegin(TheSema, Inst); |
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67 | } |
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68 | } |
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69 | |||
70 | template <class TemplateInstantiationCallbackPtrs> |
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71 | void atTemplateEnd(TemplateInstantiationCallbackPtrs &Callbacks, |
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72 | const Sema &TheSema, |
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73 | const Sema::CodeSynthesisContext &Inst) { |
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74 | for (auto &C : Callbacks) { |
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75 | if (C) |
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76 | C->atTemplateEnd(TheSema, Inst); |
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77 | } |
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78 | } |
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79 | |||
80 | } // namespace clang |
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81 | |||
82 | #endif |