1 package net.mograsim.logic.core.types;
3 import static net.mograsim.logic.core.types.BitVector.*;
4 import static net.mograsim.logic.core.types.Bit.*;
5 import static org.junit.jupiter.api.Assertions.*;
7 import java.math.BigInteger;
8 import java.util.Iterator;
10 import org.junit.jupiter.api.Test;
18 BitVector.of(); // should be allowed and work
20 assertSame(SINGLE_U, BitVector.of(U));
21 assertSame(SINGLE_X, BitVector.of(X));
22 assertSame(SINGLE_0, BitVector.of(ZERO));
23 assertSame(SINGLE_1, BitVector.of(ONE));
24 assertSame(SINGLE_Z, BitVector.of(Z));
30 assertEquals(BitVector.of(), BitVector.of(ONE, 0));
32 assertSame(SINGLE_U, BitVector.of(U, 1));
33 assertSame(SINGLE_X, BitVector.of(X, 1));
34 assertSame(SINGLE_0, BitVector.of(ZERO, 1));
35 assertSame(SINGLE_1, BitVector.of(ONE, 1));
36 assertSame(SINGLE_Z, BitVector.of(Z, 1));
38 assertEquals(BitVector.of(X, X, X), BitVector.of(X, 3));
42 void testGetUnsignedValue()
44 assertEquals(BigInteger.valueOf(0b101), BitVector.parse("101").getUnsignedValue());
45 assertEquals(BigInteger.valueOf(0b01010), BitVector.parse("01010").getUnsignedValue());
46 assertEquals(BigInteger.valueOf(0), BitVector.parse("0000").getUnsignedValue());
48 assertThrows(NumberFormatException.class, () -> BitVector.parse("00X1").getUnsignedValue());
55 assertEquals(BitVector.parse("101"), BitVector.from(0b101L, 3));
56 assertEquals(BitVector.parse("01010"), BitVector.from(0b01010L, 5));
57 assertEquals(BitVector.parse("10101"), BitVector.from(-11L, 5));
58 assertEquals(BitVector.parse("0000"), BitVector.from(0L, 4));
62 void testOfBigIntegerInt()
64 assertEquals(BitVector.parse("101"), BitVector.from(BigInteger.valueOf(0b101), 3));
65 assertEquals(BitVector.parse("01010"), BitVector.from(BigInteger.valueOf(0b01010), 5));
66 assertEquals(BitVector.parse("10101"), BitVector.from(BigInteger.valueOf(-11), 5));
67 assertEquals(BitVector.parse("0000"), BitVector.from(BigInteger.valueOf(0), 4));
73 var bv = BitVector.SINGLE_1;
74 var bvm = bv.mutator();
76 assertFalse(bvm.isEmpty());
77 assertEquals(ONE, bvm.getLSBit(0));
78 assertEquals(SINGLE_1, bvm.toBitVector());
84 assertEquals(ONE, SINGLE_1.getMSBit(0));
85 assertEquals(ONE, BitVector.of(ONE, X, X, X).getMSBit(0));
86 assertEquals(ONE, BitVector.of(X, X, X, X, ONE, X).getMSBit(4));
92 assertEquals(ONE, SINGLE_1.getLSBit(0));
93 assertEquals(ONE, BitVector.of(X, X, X, ONE).getLSBit(0));
94 assertEquals(ONE, BitVector.of(X, X, X, X, ONE, X).getLSBit(1));
100 assertArrayEquals(new Bit[] { X, ONE, Z }, BitVector.of(X, ONE, Z).getBits());
101 assertArrayEquals(new Bit[] { X, ONE, Z }, BitVector.parse("X1Z").getBits());
107 assertTrue(SINGLE_0.isBinary());
108 assertTrue(SINGLE_1.isBinary());
110 assertFalse(SINGLE_U.isBinary());
111 assertFalse(SINGLE_X.isBinary());
112 assertFalse(SINGLE_Z.isBinary());
114 assertTrue(BitVector.of(ONE, ZERO, ONE, ONE, ZERO).isBinary());
115 assertFalse(BitVector.of(ONE, ZERO, ZERO, X).isBinary());
122 assertEquals(SINGLE_0, SINGLE_0.join(SINGLE_0));
123 assertEquals(SINGLE_X, SINGLE_0.join(SINGLE_1));
124 assertEquals(SINGLE_1, SINGLE_1.join(SINGLE_1));
127 assertEquals(SINGLE_1, SINGLE_Z.join(SINGLE_1));
128 assertEquals(SINGLE_U, SINGLE_0.join(SINGLE_U));
129 assertEquals(SINGLE_X, SINGLE_X.join(SINGLE_Z));
132 var result = BitVector.of(U, X, ZERO, ONE, Z).join(BitVector.of(ONE, ZERO, ZERO, ONE, Z));
133 assertEquals(BitVector.of(U, X, ZERO, ONE, Z), result);
140 assertEquals(SINGLE_0, SINGLE_0.and(SINGLE_0));
141 assertEquals(SINGLE_0, SINGLE_0.and(SINGLE_1));
142 assertEquals(SINGLE_1, SINGLE_1.and(SINGLE_1));
145 assertEquals(SINGLE_X, SINGLE_Z.and(SINGLE_1));
146 assertEquals(SINGLE_0, SINGLE_0.and(SINGLE_U));
147 assertEquals(SINGLE_X, SINGLE_X.and(SINGLE_Z));
150 var result = BitVector.of(U, X, ZERO, ONE, ONE).and(BitVector.of(ONE, ONE, ZERO, ZERO, ONE));
151 assertEquals(BitVector.of(U, X, ZERO, ZERO, ONE), result);
158 assertEquals(SINGLE_0, SINGLE_0.or(SINGLE_0));
159 assertEquals(SINGLE_1, SINGLE_0.or(SINGLE_1));
160 assertEquals(SINGLE_1, SINGLE_1.or(SINGLE_1));
163 assertEquals(SINGLE_1, SINGLE_Z.or(SINGLE_1));
164 assertEquals(SINGLE_1, SINGLE_1.or(SINGLE_U));
165 assertEquals(SINGLE_X, SINGLE_X.or(SINGLE_Z));
168 var result = BitVector.of(U, X, ZERO, ONE, ZERO).or(BitVector.of(ZERO, ZERO, ZERO, ONE, ONE));
169 assertEquals(BitVector.of(U, X, ZERO, ONE, ONE), result);
176 assertEquals(SINGLE_0, SINGLE_0.xor(SINGLE_0));
177 assertEquals(SINGLE_1, SINGLE_0.xor(SINGLE_1));
178 assertEquals(SINGLE_0, SINGLE_1.xor(SINGLE_1));
181 assertEquals(SINGLE_X, SINGLE_Z.xor(SINGLE_1));
182 assertEquals(SINGLE_U, SINGLE_0.xor(SINGLE_U));
183 assertEquals(SINGLE_X, SINGLE_X.xor(SINGLE_Z));
186 var result = BitVector.of(U, X, ZERO, ONE, ONE).xor(BitVector.of(ONE, ZERO, ZERO, ZERO, ONE));
187 assertEquals(BitVector.of(U, X, ZERO, ONE, ZERO), result);
194 assertEquals(SINGLE_1, SINGLE_0.not());
195 assertEquals(SINGLE_0, SINGLE_1.not());
198 assertEquals(SINGLE_U, SINGLE_U.not());
199 assertEquals(SINGLE_X, SINGLE_X.not());
200 assertEquals(SINGLE_X, SINGLE_Z.not());
203 var result = BitVector.of(U, X, ZERO, ONE, Z).not();
204 assertEquals(BitVector.of(U, X, ONE, ZERO, X), result);
210 assertEquals(0, BitVector.of().width());
211 assertEquals(1, SINGLE_0.width());
212 assertEquals(3, BitVector.of(X, X, Z).width());
218 assertEquals(BitVector.of(U, X), SINGLE_U.concat(SINGLE_X));
219 assertEquals(BitVector.of(Z, X, U, ONE, X), BitVector.of(Z, X, U).concat(BitVector.of(ONE, X)));
223 void testSubVectorInt()
225 assertEquals(SINGLE_0, SINGLE_0.subVector(0));
226 assertEquals(BitVector.of(), SINGLE_0.subVector(1));
227 assertEquals(SINGLE_0, BitVector.of(ONE, ZERO).subVector(1));
228 assertEquals(BitVector.of(X, Z), BitVector.of(ZERO, U, ONE, X, Z).subVector(3));
232 void testSubVectorIntInt()
234 assertEquals(SINGLE_0, SINGLE_0.subVector(0, 1));
235 assertEquals(BitVector.of(), SINGLE_0.subVector(0, 0));
236 assertEquals(SINGLE_0, BitVector.of(ONE, ZERO).subVector(1, 2));
237 assertEquals(BitVector.of(ONE, X), BitVector.of(ZERO, U, ONE, X, Z).subVector(2, 4));
241 void testEqualsObject()
243 assertEquals(SINGLE_X, SINGLE_X);
244 assertNotEquals(SINGLE_0, SINGLE_1);
246 assertEquals(BitVector.of(X, Z, U), BitVector.of(X, Z, U));
247 assertNotEquals(BitVector.of(X, Z, U), BitVector.of(X, X, U));
251 void testEqualsWithOffset()
253 assertTrue(SINGLE_X.equalsWithOffset(SINGLE_X, 0));
254 assertFalse(SINGLE_0.equalsWithOffset(SINGLE_1, 0));
256 assertTrue(BitVector.of(X, Z, U).equalsWithOffset(BitVector.of(Z, U), 1));
257 assertFalse(BitVector.of(X, Z, U).equalsWithOffset(BitVector.of(X, U), 1));
258 assertTrue(BitVector.of(X, Z, U).equalsWithOffset(BitVector.of(U), 2));
264 assertEquals(SINGLE_U, BitVector.parse("U"));
265 assertEquals(SINGLE_X, BitVector.parse("X"));
266 assertEquals(SINGLE_0, BitVector.parse("0"));
267 assertEquals(SINGLE_1, BitVector.parse("1"));
268 assertEquals(SINGLE_Z, BitVector.parse("Z"));
270 assertEquals(BitVector.of(X, U, Z, ONE, ZERO), BitVector.parse("XUZ10"));
272 assertThrows(RuntimeException.class, () -> BitVector.parse("01BX"));
278 var bv = BitVector.of(U, Z, ONE, ZERO, X);
279 Iterator<Bit> it = bv.iterator();
281 assertEquals(U, it.next());
282 assertEquals(Z, it.next());
283 assertEquals(ONE, it.next());
284 assertEquals(ZERO, it.next());
285 assertEquals(X, it.next());
286 assertFalse(it.hasNext());