| 1 | package com.roxoft.aoc.y2015.Day3; | |
| 2 | ||
| 3 | import com.roxoft.aoc.UnexpectedSolutionException; | |
| 4 | import com.roxoft.lib.IntegerCoord2D; | |
| 5 | import com.roxoft.lib.Movable2DEntity; | |
| 6 | ||
| 7 | import java.util.ArrayList; | |
| 8 | import java.util.List; | |
| 9 | ||
| 10 | public final class Day3 { | |
| 11 | /** List of instructions to follow. */ | |
| 12 | private final String instructions; | |
| 13 | /** The {@link List} of {@link Movable2DEntity}s that will be visiting houses. */ | |
| 14 | private final List<Movable2DEntity> santas; | |
| 15 | /** Which {@link Movable2DEntity} is receiving the next instruction. **/ | |
| 16 | private int santaFocus = 0; | |
| 17 | ||
| 18 | /** | |
| 19 | * @param santaNumber the number of the desired {@link Movable2DEntity}. | |
| 20 | * @return The {@link Movable2DEntity} identified by the provided santaNumber | |
| 21 | */ | |
| 22 | public Movable2DEntity getSanta(final int santaNumber) { | |
| 23 |
1
1. getSanta : replaced return value with null for com/roxoft/aoc/y2015/Day3/Day3::getSanta → KILLED |
return santas.get(santaNumber); |
| 24 | } | |
| 25 | ||
| 26 | private Day3(final String instructionSequence) { | |
| 27 | instructions = instructionSequence; | |
| 28 | santas = new ArrayList<>(); | |
| 29 | } | |
| 30 | ||
| 31 | private Day3(final String instructionSequence, final List<Movable2DEntity> predefinedSantas) { | |
| 32 | instructions = instructionSequence; | |
| 33 | santas = predefinedSantas; | |
| 34 | } | |
| 35 | ||
| 36 | /** | |
| 37 | * @param instructionSequence A {@link String} representing a series of instructions | |
| 38 | * | |
| 39 | * @return A {@link Day3} object ready for solving the problem. | |
| 40 | */ | |
| 41 | public static Day3 of(final String instructionSequence) { | |
| 42 |
1
1. of : replaced return value with null for com/roxoft/aoc/y2015/Day3/Day3::of → KILLED |
return new Day3(instructionSequence); |
| 43 | } | |
| 44 | ||
| 45 | /** | |
| 46 | * @return A new {@link Day3} object that is a clone of this one with an additional {@link Movable2DEntity} at {@link IntegerCoord2D} (0,0) | |
| 47 | */ | |
| 48 | public Day3 withNewSanta() { | |
| 49 |
1
1. withNewSanta : replaced return value with null for com/roxoft/aoc/y2015/Day3/Day3::withNewSanta → KILLED |
return withASantaAt(IntegerCoord2D.of(0, 0)); |
| 50 | } | |
| 51 | ||
| 52 | /** | |
| 53 | * @param location the {@link IntegerCoord2D} location of the new {@link Movable2DEntity} | |
| 54 | * | |
| 55 | * @return A new {@link Day3} object that is a clone of this one with an additional {@link Movable2DEntity} at the provided {@link IntegerCoord2D} location | |
| 56 | */ | |
| 57 | public Day3 withASantaAt(final IntegerCoord2D location) { | |
| 58 | final List<Movable2DEntity> newSantaList = santas; | |
| 59 | newSantaList.add(Movable2DEntity.at(location)); | |
| 60 |
1
1. withASantaAt : replaced return value with null for com/roxoft/aoc/y2015/Day3/Day3::withASantaAt → KILLED |
return new Day3( |
| 61 | instructions, | |
| 62 | newSantaList | |
| 63 | ); | |
| 64 | } | |
| 65 | ||
| 66 | /** | |
| 67 | * @return The number of unique houses visited by all {@link Movable2DEntity}s currently | |
| 68 | */ | |
| 69 | public long getNumberOfVisitedHouses() { | |
| 70 |
1
1. getNumberOfVisitedHouses : replaced long return with 0 for com/roxoft/aoc/y2015/Day3/Day3::getNumberOfVisitedHouses → KILLED |
return santas |
| 71 | .stream() | |
| 72 | .map(Movable2DEntity::locationHistory) | |
| 73 | .flatMap(List::stream) | |
| 74 | .distinct() | |
| 75 | .count(); | |
| 76 | } | |
| 77 | ||
| 78 | /** | |
| 79 | * @return An updated {@link Day3} object where all instructions have been followed | |
| 80 | */ | |
| 81 | public Day3 followInstructions() { | |
| 82 |
2
1. followInstructions : changed conditional boundary → KILLED 2. followInstructions : negated conditional → KILLED |
for (int i = 0; i < instructions.length(); i++) { |
| 83 | followInstruction(i); | |
| 84 | } | |
| 85 |
1
1. followInstructions : replaced return value with null for com/roxoft/aoc/y2015/Day3/Day3::followInstructions → KILLED |
return this; |
| 86 | } | |
| 87 | ||
| 88 | /** | |
| 89 | * @param i the instruction index to follow | |
| 90 | * @return An updated {@link Day3} object where the indicated instruction has been followed | |
| 91 | */ | |
| 92 | public Day3 followInstruction(final int i) { | |
| 93 | final Movable2DEntity nextSanta = santas.get(santaFocus); | |
| 94 | ||
| 95 | switch (instructions.charAt(i)) { | |
| 96 |
1
1. followInstruction : removed call to com/roxoft/lib/Movable2DEntity::moveUp → KILLED |
case '^': nextSanta.moveUp(); break; |
| 97 |
1
1. followInstruction : removed call to com/roxoft/lib/Movable2DEntity::moveDown → KILLED |
case 'v': nextSanta.moveDown(); break; |
| 98 |
1
1. followInstruction : removed call to com/roxoft/lib/Movable2DEntity::moveRight → KILLED |
case '>': nextSanta.moveRight(); break; |
| 99 |
1
1. followInstruction : removed call to com/roxoft/lib/Movable2DEntity::moveLeft → KILLED |
case '<': nextSanta.moveLeft(); break; |
| 100 | default: throw new UnexpectedSolutionException("Unexpected instruction '" + instructions.charAt(0) + "'"); | |
| 101 | } | |
| 102 | ||
| 103 | //Cycle through Santas | |
| 104 |
4
1. followInstruction : changed conditional boundary → KILLED 2. followInstruction : Replaced integer addition with subtraction → KILLED 3. followInstruction : negated conditional → KILLED 4. followInstruction : Replaced integer addition with subtraction → KILLED |
santaFocus = (santaFocus + 1) < santas.size() ? (santaFocus + 1) : 0; |
| 105 |
1
1. followInstruction : replaced return value with null for com/roxoft/aoc/y2015/Day3/Day3::followInstruction → KILLED |
return this; //XXX: Immutable classes would probably be better. |
| 106 | } | |
| 107 | ||
| 108 | /** | |
| 109 | * @return An updated {@link Day3} object where the next instruction has been followed | |
| 110 | */ | |
| 111 | public Day3 followNextInstruction() { | |
| 112 |
1
1. followNextInstruction : replaced return value with null for com/roxoft/aoc/y2015/Day3/Day3::followNextInstruction → KILLED |
return followInstruction(0); |
| 113 | } | |
| 114 | } | |
Mutations | ||
| 23 |
1.1 |
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| 42 |
1.1 |
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| 49 |
1.1 |
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| 60 |
1.1 |
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| 70 |
1.1 |
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| 82 |
1.1 2.2 |
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| 85 |
1.1 |
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| 96 |
1.1 |
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| 97 |
1.1 |
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| 98 |
1.1 |
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| 99 |
1.1 |
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| 104 |
1.1 2.2 3.3 4.4 |
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| 105 |
1.1 |
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| 112 |
1.1 |