Java tutorial
/* * The MIT License (MIT) * * Copyright (c) Despector <https://despector.voxelgenesis.com> * Copyright (c) contributors * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ package org.spongepowered.test.kotlin; import static org.objectweb.asm.Opcodes.*; import org.junit.Assert; import org.junit.Test; import org.objectweb.asm.Label; import org.objectweb.asm.MethodVisitor; import org.spongepowered.test.util.KotlinTestHelper; import org.spongepowered.test.util.TestMethodBuilder; public class OperatorTests { @Test public void testIntConstant() { TestMethodBuilder builder = new TestMethodBuilder("test_mth", "(I)V"); MethodVisitor mv = builder.getGenerator(); Label start = new Label(); mv.visitLabel(start); Label end = new Label(); mv.visitIntInsn(BIPUSH, 65); mv.visitIntInsn(ISTORE, 0); mv.visitLabel(end); mv.visitInsn(RETURN); mv.visitLocalVariable("i", "I", null, start, end, 0); String insn = KotlinTestHelper.getMethodAsString(builder.finish(), "test_mth"); String good = "fun test_mth(i: Int) {\n" + " i = 65\n" + "}"; Assert.assertEquals(good, insn); } @Test public void testNegative() { TestMethodBuilder builder = new TestMethodBuilder("test_mth", "(II)V"); MethodVisitor mv = builder.getGenerator(); Label start = new Label(); mv.visitLabel(start); Label end = new Label(); mv.visitIntInsn(ILOAD, 1); mv.visitInsn(INEG); mv.visitIntInsn(ISTORE, 0); mv.visitLabel(end); mv.visitInsn(RETURN); mv.visitLocalVariable("i", "I", null, start, end, 0); mv.visitLocalVariable("a", "I", null, start, end, 1); String insn = KotlinTestHelper.getMethodAsString(builder.finish(), "test_mth"); String good = "fun test_mth(i: Int, a: Int) {\n" + " i = -a\n" + "}"; Assert.assertEquals(good, insn); } @Test public void testAdd() { TestMethodBuilder builder = new TestMethodBuilder("test_mth", "(III)V"); MethodVisitor mv = builder.getGenerator(); Label start = new Label(); mv.visitLabel(start); Label end = new Label(); mv.visitIntInsn(ILOAD, 1); mv.visitIntInsn(ILOAD, 2); mv.visitInsn(IADD); mv.visitIntInsn(ISTORE, 0); mv.visitLabel(end); mv.visitInsn(RETURN); mv.visitLocalVariable("i", "I", null, start, end, 0); mv.visitLocalVariable("a", "I", null, start, end, 1); mv.visitLocalVariable("b", "I", null, start, end, 2); String insn = KotlinTestHelper.getMethodAsString(builder.finish(), "test_mth"); String good = "fun test_mth(i: Int, a: Int, b: Int) {\n" + " i = a + b\n" + "}"; Assert.assertEquals(good, insn); } @Test public void testSub() { TestMethodBuilder builder = new TestMethodBuilder("test_mth", "(III)V"); MethodVisitor mv = builder.getGenerator(); Label start = new Label(); mv.visitLabel(start); Label end = new Label(); mv.visitIntInsn(ILOAD, 1); mv.visitIntInsn(ILOAD, 2); mv.visitInsn(ISUB); mv.visitIntInsn(ISTORE, 0); mv.visitLabel(end); mv.visitInsn(RETURN); mv.visitLocalVariable("i", "I", null, start, end, 0); mv.visitLocalVariable("a", "I", null, start, end, 1); mv.visitLocalVariable("b", "I", null, start, end, 2); String insn = KotlinTestHelper.getMethodAsString(builder.finish(), "test_mth"); String good = "fun test_mth(i: Int, a: Int, b: Int) {\n" + " i = a - b\n" + "}"; Assert.assertEquals(good, insn); } @Test public void testMultiply() { TestMethodBuilder builder = new TestMethodBuilder("test_mth", "(III)V"); MethodVisitor mv = builder.getGenerator(); Label start = new Label(); mv.visitLabel(start); Label end = new Label(); mv.visitIntInsn(ILOAD, 1); mv.visitIntInsn(ILOAD, 2); mv.visitInsn(IMUL); mv.visitIntInsn(ISTORE, 0); mv.visitLabel(end); mv.visitInsn(RETURN); mv.visitLocalVariable("i", "I", null, start, end, 0); mv.visitLocalVariable("a", "I", null, start, end, 1); mv.visitLocalVariable("b", "I", null, start, end, 2); String insn = KotlinTestHelper.getMethodAsString(builder.finish(), "test_mth"); String good = "fun test_mth(i: Int, a: Int, b: Int) {\n" + " i = a * b\n" + "}"; Assert.assertEquals(good, insn); } @Test public void testDiv() { TestMethodBuilder builder = new TestMethodBuilder("test_mth", "(III)V"); MethodVisitor mv = builder.getGenerator(); Label start = new Label(); mv.visitLabel(start); Label end = new Label(); mv.visitIntInsn(ILOAD, 1); mv.visitIntInsn(ILOAD, 2); mv.visitInsn(IDIV); mv.visitIntInsn(ISTORE, 0); mv.visitLabel(end); mv.visitInsn(RETURN); mv.visitLocalVariable("i", "I", null, start, end, 0); mv.visitLocalVariable("a", "I", null, start, end, 1); mv.visitLocalVariable("b", "I", null, start, end, 2); String insn = KotlinTestHelper.getMethodAsString(builder.finish(), "test_mth"); String good = "fun test_mth(i: Int, a: Int, b: Int) {\n" + " i = a / b\n" + "}"; Assert.assertEquals(good, insn); } @Test public void testRem() { TestMethodBuilder builder = new TestMethodBuilder("test_mth", "(III)V"); MethodVisitor mv = builder.getGenerator(); Label start = new Label(); mv.visitLabel(start); Label end = new Label(); mv.visitIntInsn(ILOAD, 1); mv.visitIntInsn(ILOAD, 2); mv.visitInsn(IREM); mv.visitIntInsn(ISTORE, 0); mv.visitLabel(end); mv.visitInsn(RETURN); mv.visitLocalVariable("i", "I", null, start, end, 0); mv.visitLocalVariable("a", "I", null, start, end, 1); mv.visitLocalVariable("b", "I", null, start, end, 2); String insn = KotlinTestHelper.getMethodAsString(builder.finish(), "test_mth"); String good = "fun test_mth(i: Int, a: Int, b: Int) {\n" + " i = a % b\n" + "}"; Assert.assertEquals(good, insn); } @Test public void testShr() { TestMethodBuilder builder = new TestMethodBuilder("test_mth", "(III)V"); MethodVisitor mv = builder.getGenerator(); Label start = new Label(); mv.visitLabel(start); Label end = new Label(); mv.visitIntInsn(ILOAD, 1); mv.visitIntInsn(ILOAD, 2); mv.visitInsn(ISHR); mv.visitIntInsn(ISTORE, 0); mv.visitLabel(end); mv.visitInsn(RETURN); mv.visitLocalVariable("i", "I", null, start, end, 0); mv.visitLocalVariable("a", "I", null, start, end, 1); mv.visitLocalVariable("b", "I", null, start, end, 2); String insn = KotlinTestHelper.getMethodAsString(builder.finish(), "test_mth"); String good = "fun test_mth(i: Int, a: Int, b: Int) {\n" + " i = a shr b\n" + "}"; Assert.assertEquals(good, insn); } @Test public void testUshr() { TestMethodBuilder builder = new TestMethodBuilder("test_mth", "(III)V"); MethodVisitor mv = builder.getGenerator(); Label start = new Label(); mv.visitLabel(start); Label end = new Label(); mv.visitIntInsn(ILOAD, 1); mv.visitIntInsn(ILOAD, 2); mv.visitInsn(IUSHR); mv.visitIntInsn(ISTORE, 0); mv.visitLabel(end); mv.visitInsn(RETURN); mv.visitLocalVariable("i", "I", null, start, end, 0); mv.visitLocalVariable("a", "I", null, start, end, 1); mv.visitLocalVariable("b", "I", null, start, end, 2); String insn = KotlinTestHelper.getMethodAsString(builder.finish(), "test_mth"); String good = "fun test_mth(i: Int, a: Int, b: Int) {\n" + " i = a ushr b\n" + "}"; Assert.assertEquals(good, insn); } @Test public void testShl() { TestMethodBuilder builder = new TestMethodBuilder("test_mth", "(III)V"); MethodVisitor mv = builder.getGenerator(); Label start = new Label(); mv.visitLabel(start); Label end = new Label(); mv.visitIntInsn(ILOAD, 1); mv.visitIntInsn(ILOAD, 2); mv.visitInsn(ISHL); mv.visitIntInsn(ISTORE, 0); mv.visitLabel(end); mv.visitInsn(RETURN); mv.visitLocalVariable("i", "I", null, start, end, 0); mv.visitLocalVariable("a", "I", null, start, end, 1); mv.visitLocalVariable("b", "I", null, start, end, 2); String insn = KotlinTestHelper.getMethodAsString(builder.finish(), "test_mth"); String good = "fun test_mth(i: Int, a: Int, b: Int) {\n" + " i = a shl b\n" + "}"; Assert.assertEquals(good, insn); } @Test public void testFloatCompare() { TestMethodBuilder builder = new TestMethodBuilder("test_mth", "(ZFF)V"); MethodVisitor mv = builder.getGenerator(); Label start = new Label(); mv.visitLabel(start); Label end = new Label(); Label l1 = new Label(); Label l2 = new Label(); mv.visitIntInsn(FLOAD, 1); mv.visitIntInsn(FLOAD, 2); mv.visitInsn(FCMPG); mv.visitJumpInsn(IFGT, l1); mv.visitInsn(ICONST_1); mv.visitJumpInsn(GOTO, l2); mv.visitLabel(l1); mv.visitInsn(ICONST_0); mv.visitLabel(l2); mv.visitIntInsn(ISTORE, 0); mv.visitLabel(end); mv.visitInsn(RETURN); mv.visitLocalVariable("i", "Z", null, start, end, 0); mv.visitLocalVariable("a", "F", null, start, end, 1); mv.visitLocalVariable("b", "F", null, start, end, 2); String insn = KotlinTestHelper.getMethodAsString(builder.finish(), "test_mth"); String good = "fun test_mth(i: Boolean, a: Float, b: Float) {\n" + " i = a <= b\n" + "}"; Assert.assertEquals(good, insn); } }