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- // Copyright 2015 the V8 project authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- // Generates a comparison table test case.
- // Usage: d8 compare-table-gen.js -- lt|lteq|gt|gteq|eq|ne|eq|sne|min|max
- var strings = ["true", "false", "null", "void 0", "0", "0.0", "-0", "\"\"", "-1", "-1.25", "1", "1.25", "-2147483648", "2147483648", "Infinity", "-Infinity", "NaN"];
- var values = new Array(strings.length);
- for (var i = 0; i < strings.length; i++) {
- values[i] = eval(strings[i]);
- }
- function test() {
- for (var i = 0; i < values.length; i++) {
- for (var j = 0; j < values.length; j++) {
- var a = values[i];
- var b = values[j];
- var x = expected[i][j];
- assertEquals(x, func(a,b));
- assertEquals(x, left_funcs[i](b));
- assertEquals(x, right_funcs[j](a));
- }
- }
- var result = matrix();
- for (var i = 0; i < values.length; i++) {
- for (var j = 0; j < values.length; j++) {
- assertEquals(expected[i][j], result[i][j]);
- }
- }
- }
- function expr(infix, a, cmp, b) {
- return infix ? a + " " + cmp + " " + b : cmp + "(" + a + ", " + b + ")";
- }
- function SpecialToString(x) {
- if ((1 / x) == -Infinity) return "-0";
- return "" + x;
- }
- function gen(name, cmp, infix) {
- print("// Copyright 2015 the V8 project authors. All rights reserved.");
- print("// Use of this source code is governed by a BSD-style license that can be");
- print("// found in the LICENSE file.");
- print();
- print("var values = [" + strings + "];");
- var body = "(function " + name + "(a,b) { return " + expr(infix, "a", cmp, "b") + "; })";
- var func = eval(body);
- print("var expected = [");
- for (var i = 0; i < values.length; i++) {
- var line = " [";
- for (var j = 0; j < values.length; j++) {
- if (j > 0) line += ",";
- line += SpecialToString(func(values[i], values[j]));
- }
- line += "]";
- if (i < (values.length - 1)) line += ",";
- print(line);
- }
- print("];");
- print("var func = " + body + ";");
- print("var left_funcs = [");
- for (var i = 0; i < values.length; i++) {
- var value = strings[i];
- var body = "(function " + name + "_L" + i + "(b) { return " + expr(infix, value, cmp, "b") + "; })";
- var end = i < (values.length - 1) ? "," : "";
- print(" " + body + end);
- }
- print("];");
- print("var right_funcs = [");
- for (var i = 0; i < values.length; i++) {
- var value = strings[i];
- var body = "(function " + name + "_R" + i + "(a) { return " + expr(infix, "a", cmp, value) + "; })";
- var end = i < (values.length - 1) ? "," : "";
- print(" " + body + end);
- }
- print("];");
- print("function matrix() {");
- print(" return [");
- for (var i = 0; i < values.length; i++) {
- var line = " [";
- for (var j = 0; j < values.length; j++) {
- if (j > 0) line += ",";
- line += expr(infix, strings[i], cmp, strings[j]);
- }
- line += "]";
- if (i < (values.length - 1)) line += ",";
- print(line);
- }
- print(" ];");
- print("}");
- print(test.toString());
- print("test();");
- print("test();");
- }
- switch (arguments[0]) {
- case "lt": gen("lt", "<", true); break;
- case "lteq": gen("lteq", "<=", true); break;
- case "gt": gen("gt", ">", true); break;
- case "gteq": gen("gteq", ">=", true); break;
- case "eq": gen("eq", "==", true); break;
- case "ne": gen("ne", "!=", true); break;
- case "seq": gen("seq", "===", true); break;
- case "sne": gen("sne", "!==", true); break;
- case "min": gen("min", "Math.min", false); break;
- case "max": gen("max", "Math.max", false); break;
- }
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