1 // Copyright 2015 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // Generates a comparison table test case. 6 // Usage: d8 compare-table-gen.js -- lt|lteq|gt|gteq|eq|ne|eq|sne|min|max 7 8 var strings = ["true", "false", "null", "void 0", "0", "0.0", "-0", "\"\"", "-1", "-1.25", "1", "1.25", "-2147483648", "2147483648", "Infinity", "-Infinity", "NaN"]; 9 var values = new Array(strings.length); 10 for (var i = 0; i < strings.length; i++) { 11 values[i] = eval(strings[i]); 12 } 13 14 function test() { 15 for (var i = 0; i < values.length; i++) { 16 for (var j = 0; j < values.length; j++) { 17 var a = values[i]; 18 var b = values[j]; 19 var x = expected[i][j]; 20 assertEquals(x, func(a,b)); 21 assertEquals(x, left_funcs[i](b)); 22 assertEquals(x, right_funcs[j](a)); 23 } 24 } 25 26 var result = matrix(); 27 for (var i = 0; i < values.length; i++) { 28 for (var j = 0; j < values.length; j++) { 29 assertEquals(expected[i][j], result[i][j]); 30 } 31 } 32 } 33 34 function expr(infix, a, cmp, b) { 35 return infix ? a + " " + cmp + " " + b : cmp + "(" + a + ", " + b + ")"; 36 } 37 38 function SpecialToString(x) { 39 if ((1 / x) == -Infinity) return "-0"; 40 return "" + x; 41 } 42 43 function gen(name, cmp, infix) { 44 45 print("// Copyright 2015 the V8 project authors. All rights reserved."); 46 print("// Use of this source code is governed by a BSD-style license that can be"); 47 print("// found in the LICENSE file."); 48 print(); 49 print("var values = [" + strings + "];"); 50 51 var body = "(function " + name + "(a,b) { return " + expr(infix, "a", cmp, "b") + "; })"; 52 var func = eval(body); 53 54 print("var expected = ["); 55 56 for (var i = 0; i < values.length; i++) { 57 var line = " ["; 58 for (var j = 0; j < values.length; j++) { 59 if (j > 0) line += ","; 60 line += SpecialToString(func(values[i], values[j])); 61 } 62 line += "]"; 63 if (i < (values.length - 1)) line += ","; 64 print(line); 65 } 66 print("];"); 67 68 print("var func = " + body + ";"); 69 print("var left_funcs = ["); 70 71 for (var i = 0; i < values.length; i++) { 72 var value = strings[i]; 73 var body = "(function " + name + "_L" + i + "(b) { return " + expr(infix, value, cmp, "b") + "; })"; 74 var end = i < (values.length - 1) ? "," : ""; 75 print(" " + body + end); 76 } 77 print("];"); 78 79 print("var right_funcs = ["); 80 for (var i = 0; i < values.length; i++) { 81 var value = strings[i]; 82 var body = "(function " + name + "_R" + i + "(a) { return " + expr(infix, "a", cmp, value) + "; })"; 83 var end = i < (values.length - 1) ? "," : ""; 84 print(" " + body + end); 85 } 86 print("];"); 87 88 print("function matrix() {"); 89 print(" return ["); 90 for (var i = 0; i < values.length; i++) { 91 var line = " ["; 92 for (var j = 0; j < values.length; j++) { 93 if (j > 0) line += ","; 94 line += expr(infix, strings[i], cmp, strings[j]); 95 } 96 line += "]"; 97 if (i < (values.length - 1)) line += ","; 98 print(line); 99 } 100 print(" ];"); 101 print("}"); 102 103 104 print(test.toString()); 105 print("test();"); 106 print("test();"); 107 } 108 109 switch (arguments[0]) { 110 case "lt": gen("lt", "<", true); break; 111 case "lteq": gen("lteq", "<=", true); break; 112 case "gt": gen("gt", ">", true); break; 113 case "gteq": gen("gteq", ">=", true); break; 114 case "eq": gen("eq", "==", true); break; 115 case "ne": gen("ne", "!=", true); break; 116 case "seq": gen("seq", "===", true); break; 117 case "sne": gen("sne", "!==", true); break; 118 case "min": gen("min", "Math.min", false); break; 119 case "max": gen("max", "Math.max", false); break; 120 } 121
