ADT
aaron-thesis
arm-eh
ast-experimental
cleanup-dtors
deferred_resn
demangler
enum
forall-pointer-decay
jacob/cs343-translation
jenkins-sandbox
new-ast
new-ast-unique-expr
new-env
no_list
persistent-indexer
pthread-emulation
qualifiedEnum
resolv-new
with_gc
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Last change
on this file since c3acf0aa was 91c389a, checked in by Peter A. Buhr <pabuhr@…>, 8 years ago |
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change usages of assert to assert.h
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Property mode
set to
100644
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File size:
1.9 KB
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| 1 | //
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| 2 | // Cforall Version 1.0.0 Copyright (C) 2016 University of Waterloo
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| 3 | //
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| 4 | // The contents of this file are covered under the licence agreement in the
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| 5 | // file "LICENCE" distributed with Cforall.
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| 6 | //
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| 7 | // maybe.c -- May contain a value.
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| 8 | //
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| 9 | // Author : Andrew Beach
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| 10 | // Created On : Wed May 24 15:40:00 2017
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| 11 | // Last Modified By : Peter A. Buhr
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| 12 | // Last Modified On : Thu Jul 20 15:23:50 2017
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| 13 | // Update Count : 2
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| 14 | //
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| 15 |
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| 16 | #include <containers/maybe>
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| 17 | #include <assert.h>
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| 18 |
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| 19 |
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| 20 | forall(otype T)
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| 21 | void ?{}(maybe(T) * this) {
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| 22 | this->has_value = false;
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| 23 | }
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| 24 |
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| 25 | forall(otype T)
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| 26 | void ?{}(maybe(T) * this, T value) {
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| 27 | this->has_value = true;
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| 28 | (&this->value){value};
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| 29 | }
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| 30 |
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| 31 | forall(otype T)
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| 32 | void ?{}(maybe(T) * this, maybe(T) other) {
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| 33 | this->has_value = other.has_value;
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| 34 | if (other.has_value) {
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| 35 | (&this->value){other.value};
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| 36 | }
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| 37 | }
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| 38 |
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| 39 | forall(otype T)
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| 40 | maybe(T) ?=?(maybe(T) * this, maybe(T) that) {
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| 41 | if (this->has_value & that.has_value) {
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| 42 | this->value = that.value;
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| 43 | } else if (this->has_value) {
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| 44 | ^(&this->value){};
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| 45 | this->has_value = false;
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| 46 | } else if (that.has_value) {
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| 47 | this->has_value = true;
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| 48 | (&this->value){that.value};
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| 49 | }
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| 50 | }
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| 51 |
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| 52 | forall(otype T)
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| 53 | void ^?{}(maybe(T) * this) {
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| 54 | if (this->has_value) {
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| 55 | ^(&this->value){};
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| 56 | }
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| 57 | }
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| 58 |
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| 59 | forall(otype T)
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| 60 | bool ?!=?(maybe(T) this, zero_t) {
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| 61 | return this.has_value;
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| 62 | }
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| 63 |
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| 64 | forall(otype T)
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| 65 | maybe(T) maybe_value(T value) {
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| 66 | return (maybe(T)){value};
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| 67 | }
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| 68 |
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| 69 | forall(otype T)
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| 70 | maybe(T) maybe_none() {
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| 71 | return (maybe(T)){};
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| 72 | }
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| 73 |
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| 74 | forall(otype T)
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| 75 | bool has_value(maybe(T) * this) {
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| 76 | return this->has_value;
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| 77 | }
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| 78 |
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| 79 | forall(otype T)
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| 80 | T get(maybe(T) * this) {
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| 81 | assertf(this->has_value, "attempt to get from maybe without value");
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| 82 | return this->value;
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| 83 | }
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| 84 |
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| 85 | forall(otype T)
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| 86 | void set(maybe(T) * this, T value) {
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| 87 | if (this->has_value) {
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| 88 | this->value = value;
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| 89 | } else {
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| 90 | this->has_value = true;
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| 91 | (&this->value){value};
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| 92 | }
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| 93 | }
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| 94 |
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| 95 | forall(otype T)
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| 96 | void set_none(maybe(T) * this) {
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| 97 | if (this->has_value) {
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| 98 | this->has_value = false;
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| 99 | ^(&this->value){};
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| 100 | }
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| 101 | }
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