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115 lines
2.4 KiB
115 lines
2.4 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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import java.util.Enumeration;
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import java.util.Iterator;
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class PurityModeled {
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double math_random_impure() {
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return Math.random();
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}
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double math_random_infeasible_pure(int x) {
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if (x > 1 && x < 2) {
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return Math.random(); // this path will never be taken
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}
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return 0;
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}
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void arraycopy_pure_FP(int[] src) {
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int[] dst = {5, 10, 20, 30, 40, 50};
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// copies an array from the specified source array
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System.arraycopy(src, 0, dst, 0, 1);
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}
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public void array_length_loop_pure(Integer[] array) {
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for (int i = 0; i < array.length; i++) {}
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}
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void write_impure() {
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byte[] temp = new byte[4];
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System.out.write(temp, 0, 4);
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}
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void call_write_impure() {
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write_impure();
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}
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int math_random_in_loop_impure(int x) {
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int p = 0;
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for (int i = 0; i < x; i++) {
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p += Math.random();
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call_write_impure();
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}
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return p;
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}
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void list_size_pure(ArrayList<String> list) {
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for (int i = 0; i < list.size(); i++) {}
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}
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void list_add_impure(ArrayList<String> list) {
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list.add("a");
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}
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void list_addall_impure(ArrayList<String> list1, ArrayList<String> list2) {
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list1.addAll(list2);
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}
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void enum_loop_pure(Enumeration<String> e) {
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for (; e.hasMoreElements(); ) {
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Object o = e.nextElement();
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}
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}
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void remove_impure(Iterator<String> i) {
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while (i.hasNext()) {
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if (i.next().equals("Orange")) {
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i.remove();
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break;
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}
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}
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}
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void list_set_impure(ArrayList<String> list) {
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list.set(0, "e");
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}
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// Pulse can only widen a fixed number of times, hence it thinks
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// that the exit of the loop never reaches and results in empty
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// post.
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void timing_call_in_loop_impure_FN() {
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for (int i = 0; i < 10; i++) {
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System.nanoTime();
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}
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}
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void timing_call_in_loop_symb_impure(int n) {
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for (int i = 0; i < n; i++) {
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System.nanoTime();
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}
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}
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enum Color {
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RED,
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GREEN,
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BLUE; // values() calls clone
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}
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public void enum_iter_pure() {
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for (Color c : Color.values()) {}
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}
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void clone_pure(ArrayList<String> list) {
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ArrayList<String> cloned = (ArrayList<String>) list.clone();
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cloned.add(""); // no change the list
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}
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}
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