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92 lines
1.9 KiB
92 lines
1.9 KiB
/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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import java.util.ArrayList;
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class Test {
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private int a = 0;
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static Integer[] global_arr;
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void Test(int size) {
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global_arr = new Integer[size];
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}
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void set_impure(int x, int y) {
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a = x + y;
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}
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void global_array_set_impure(int x, int y) {
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global_arr[0] = x + y;
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}
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int local_write_pure(int x, int y) {
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int k = x + y;
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k++;
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return k;
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}
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void call_pure_pure(int size) {
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for (int i = 0; i < size; i++) {
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local_write_pure(i, size);
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}
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}
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void call_impure_impure(int size) {
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int d = 0;
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for (int i = 0; i < size; i++) {
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set_impure(i, size);
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}
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}
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// no change to outside state, the local allocation is ok.
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int local_alloc_pure(int x, int y) {
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ArrayList<Integer> list = new ArrayList<Integer>(x + y);
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for (Integer el : list) {
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call_pure_pure(el);
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}
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return list.size();
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}
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void parameter_field_write_impure(Test test, boolean b) {
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int c = b ? 0 : 1;
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test.a = c;
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}
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int parameter_field_access_pure(Test test) {
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return test.a;
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}
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// expected to be impure since y points to x
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void local_field_write_impure(Test x) {
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Test y = x;
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y.a = 0;
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}
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void swap_impure(int[] array, int i, int j) {
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int tmp = array[i];
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array[i] = array[j];
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array[j] = tmp;
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}
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void alias_impure(int[] array, int i, int j) {
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int[] a = array;
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a[j] = i;
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}
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// Currently, we can't distinguish between returning new Objects or
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// creating new Objects locally. Ideally, the latter should be fine
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// as long as it doesn't leak to the result.
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public ArrayList<Integer> emptyList_impure_FN() {
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return new ArrayList<Integer>();
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}
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// All unmodeled calls should be considered impure
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static long systemNanoTime_impure_FN() {
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return System.nanoTime();
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}
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}
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