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gate language features in ufuzz automatically (#4367)

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This commit is contained in:
Alex Lam S.L
2020-12-11 19:43:12 +00:00
committed by GitHub
parent 1020d37256
commit 4fdec765bc
1 changed files with 61 additions and 37 deletions
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98
test/ufuzz/index.js
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@@ -126,6 +126,22 @@ for (var i = 2; i < process.argv.length; ++i) {
}
}
var SUPPORT = function(matrix) {
for (var name in matrix) {
matrix[name] = typeof sandbox.run_code(matrix[name]) == "string";
}
return matrix;
}({
async: "async function f(){}",
catch_omit_var: "try {} catch {}",
computed_key: "({[0]: 0});",
destructuring: "[] = [];",
let: "let a;",
spread: "[...[]];",
spread_object: "({...0});",
trailing_comma: "function f(a,) {}",
});
var VALUES = [
'"a"',
'"b"',
@@ -363,7 +379,7 @@ function createFunctions(n, recurmax, allowDefun, canThrow, stmtDepth) {
}
function addTrailingComma(list) {
return list && rng(20) == 0 ? list + "," : list;
return SUPPORT.trailing_comma && list && rng(20) == 0 ? list + "," : list;
}
function createParams(noDuplicate) {
@@ -381,7 +397,7 @@ function createParams(noDuplicate) {
function createArgs(recurmax, stmtDepth, canThrow) {
recurmax--;
var args = [];
for (var n = rng(4); --n >= 0;) switch (rng(50)) {
for (var n = rng(4); --n >= 0;) switch (SUPPORT.spread ? rng(50) : 3) {
case 0:
case 1:
var name = getVarName();
@@ -532,10 +548,10 @@ function createBlockVariables(recurmax, stmtDepth, canThrow, fn) {
unique_vars.push("a", "b", "c", "undefined", "NaN", "Infinity");
while (!rng(block_vars.length > block_len ? 10 : 100)) {
var name = createVarName(MANDATORY, DONT_STORE);
if (rng(2)) {
consts.push(name);
} else {
if (SUPPORT.let && rng(2)) {
lets.push(name);
} else {
consts.push(name);
}
block_vars.push(name);
}
@@ -555,7 +571,7 @@ function createBlockVariables(recurmax, stmtDepth, canThrow, fn) {
function createDefinitions(type, names) {
if (!names.length) return "";
var s = type + " ";
switch (rng(10)) {
switch (SUPPORT.destructuring ? rng(10) : 2) {
case 0:
while (!rng(10)) names.splice(rng(names.length + 1), 0, "");
s += "[ " + names.join(", ") + " ] = [ " + names.map(function() {
@@ -601,7 +617,7 @@ function createFunction(recurmax, allowDefun, canThrow, stmtDepth) {
var name, args;
var varNames = VAR_NAMES.slice();
var save_async = async;
async = rng(50) == 0;
async = SUPPORT.async && rng(50) == 0;
createBlockVariables(recurmax, stmtDepth, canThrow, function(defns) {
if (allowDefun || rng(5) > 0) {
name = "f" + funcs++;
@@ -611,7 +627,7 @@ function createFunction(recurmax, allowDefun, canThrow, stmtDepth) {
unique_vars.length -= 3;
}
var params;
if ((!allowDefun || !(name in called)) && rng(2)) {
if (SUPPORT.destructuring && (!allowDefun || !(name in called)) && rng(2)) {
called[name] = false;
var pairs = createAssignmentPairs(recurmax, COMMA_OK, stmtDepth, canThrow, varNames, save_async);
params = addTrailingComma(pairs.names.join(", "));
@@ -741,8 +757,8 @@ function createStatement(recurmax, canThrow, canBreak, canContinue, cannotReturn
return [
"{var expr" + loop + " = " + createExpression(recurmax, COMMA_OK, stmtDepth, canThrow) + "; ",
label.target + " for (",
!/^key/.test(key) ? rng(10) ? "" : "var " : rng(10) ? "var " : rng(2) ? "let " : "const ",
rng(10) ? key : rng(5) ? "[ " + key + " ]" : "{ length: " + key + " }",
!/^key/.test(key) ? rng(10) ? "" : "var " : !SUPPORT.let || rng(10) ? "var " : rng(2) ? "let " : "const ",
!SUPPORT.destructuring || rng(10) ? key : rng(5) ? "[ " + key + " ]" : "{ length: " + key + " }",
" in expr" + loop + ") {",
rng(5) > 1 ? "c = 1 + c; var " + createVarName(MANDATORY) + " = expr" + loop + "[" + key + "]; " : "",
createStatement(recurmax, canThrow, canBreak, canContinue, cannotReturn, stmtDepth),
@@ -757,7 +773,7 @@ function createStatement(recurmax, canThrow, canBreak, canContinue, cannotReturn
// note: default does not _need_ to be last
return "switch (" + createExpression(recurmax, COMMA_OK, stmtDepth, canThrow) + ") { " + createSwitchParts(recurmax, 4, canThrow, canBreak, canContinue, cannotReturn, stmtDepth) + "}";
case STMT_VAR:
if (!rng(20)) {
if (SUPPORT.destructuring && rng(20) == 0) {
var pairs = createAssignmentPairs(recurmax, NO_COMMA, stmtDepth, canThrow);
return "var " + pairs.names.map(function(name, index) {
return index in pairs.values ? name + " = " + pairs.values[index] : name;
@@ -819,10 +835,14 @@ function createStatement(recurmax, canThrow, canBreak, canContinue, cannotReturn
// we have to do go through some trouble here to prevent leaking it
var nameLenBefore = VAR_NAMES.length;
createBlockVariables(recurmax, stmtDepth, canThrow, function(defns) {
var catchName = createVarName(MANDATORY);
if (SUPPORT.catch_omit_var && rng(20) == 0) {
s += " catch { ";
} else {
var catchName = createVarName(MANDATORY);
if (!catch_redef) unique_vars.push(catchName);
s += " catch (" + catchName + ") { ";
}
var freshCatchName = VAR_NAMES.length !== nameLenBefore;
if (!catch_redef) unique_vars.push(catchName);
s += " catch (" + catchName + ") { ";
s += defns() + "\n";
s += _createStatements(3, recurmax, canThrow, canBreak, canContinue, cannotReturn, stmtDepth);
s += " }";
@@ -906,7 +926,7 @@ function _createExpression(recurmax, noComma, stmtDepth, canThrow) {
case p++:
return getVarName();
case p++:
switch (rng(20)) {
switch (SUPPORT.destructuring ? rng(20) : 2) {
case 0:
return [
"[ ",
@@ -936,7 +956,7 @@ function _createExpression(recurmax, noComma, stmtDepth, canThrow) {
case p++:
var nameLenBefore = VAR_NAMES.length;
var save_async = async;
async = rng(50) == 0;
async = SUPPORT.async && rng(50) == 0;
unique_vars.push("c");
var name = createVarName(MAYBE); // note: this name is only accessible from _within_ the function. and immutable at that.
unique_vars.pop();
@@ -1089,14 +1109,9 @@ function _createExpression(recurmax, noComma, stmtDepth, canThrow) {
function createArrayLiteral(recurmax, stmtDepth, canThrow) {
recurmax--;
var arr = [];
for (var i = rng(6); --i >= 0;) switch (rng(50)) {
for (var i = rng(6); --i >= 0;) switch (SUPPORT.spread ? rng(50) : 3 + rng(47)) {
case 0:
case 1:
// in rare cases produce an array hole element
arr.push("");
break;
case 2:
case 3:
var name = getVarName();
if (canThrow && rng(8) === 0) {
arr.push("..." + name);
@@ -1104,9 +1119,14 @@ function createArrayLiteral(recurmax, stmtDepth, canThrow) {
arr.push('...("" + ' + name + ")");
}
break;
case 4:
case 2:
arr.push("..." + createArrayLiteral(recurmax, stmtDepth, canThrow));
break;
case 3:
case 4:
// in rare cases produce an array hole element
arr.push("");
break;
default:
arr.push(createExpression(recurmax, COMMA_OK, stmtDepth, canThrow));
break;
@@ -1145,14 +1165,17 @@ function getDotKey(assign) {
}
function createObjectKey(recurmax, stmtDepth, canThrow) {
return rng(10) ? KEYS[rng(KEYS.length)] : "[" + createExpression(recurmax, NO_COMMA, stmtDepth, canThrow) + "]";
if (SUPPORT.computed_key && rng(10) == 0) {
return "[" + createExpression(recurmax, NO_COMMA, stmtDepth, canThrow) + "]";
}
return KEYS[rng(KEYS.length)];
}
function createObjectFunction(recurmax, stmtDepth, canThrow) {
var namesLenBefore = VAR_NAMES.length;
var s;
createBlockVariables(recurmax, stmtDepth, canThrow, function(defns) {
switch (rng(3)) {
switch (rng(SUPPORT.computed_key ? 3 : 2)) {
case 0:
s = [
"get " + createObjectKey(recurmax, stmtDepth, canThrow) + "(){",
@@ -1196,20 +1219,21 @@ function createObjectFunction(recurmax, stmtDepth, canThrow) {
function createObjectLiteral(recurmax, stmtDepth, canThrow) {
recurmax--;
var obj = ["({"];
for (var i = rng(6); --i >= 0;) switch (rng(50)) {
var offset = SUPPORT.spread_object ? 0 : SUPPORT.computed_key ? 2 : 4;
for (var i = rng(6); --i >= 0;) switch (offset + rng(50 - offset)) {
case 0:
case 1:
obj.push(getVarName() + ",");
break;
case 2:
obj.push(createObjectFunction(recurmax, stmtDepth, canThrow));
break;
case 3:
obj.push("..." + getVarName() + ",");
break;
case 4:
case 1:
obj.push("..." + createExpression(recurmax, COMMA_OK, stmtDepth, canThrow) + ",");
break;
case 2:
case 3:
obj.push(getVarName() + ",");
break;
case 4:
obj.push(createObjectFunction(recurmax, stmtDepth, canThrow));
break;
default:
obj.push(createObjectKey(recurmax, stmtDepth, canThrow) + ": " + createExpression(recurmax, COMMA_OK, stmtDepth, canThrow) + ",");
break;
@@ -1240,7 +1264,7 @@ function _createSimpleBinaryExpr(recurmax, noComma, stmtDepth, canThrow) {
return "(" + assignee + createAssignment() + _createBinaryExpr(recurmax, noComma, stmtDepth, canThrow) + ")";
case 3:
assignee = getVarName();
switch (rng(20)) {
switch (SUPPORT.destructuring ? rng(20) : 2) {
case 0:
expr = [
"([ ",
@@ -1277,7 +1301,7 @@ function _createSimpleBinaryExpr(recurmax, noComma, stmtDepth, canThrow) {
return canThrow && rng(10) == 0 ? expr : "(" + assignee + " && " + expr + ")";
case 4:
assignee = getVarName();
switch (rng(20)) {
switch (SUPPORT.destructuring ? rng(20) : 2) {
case 0:
expr = [
"([ ",
@@ -1672,7 +1696,7 @@ function patch_try_catch(orig, toplevel) {
}
var minify_options = require("./options.json");
if (typeof sandbox.run_code("console.log([ 1 ], {} = 2);") != "string") {
if (SUPPORT.destructuring && typeof sandbox.run_code("console.log([ 1 ], {} = 2);") != "string") {
minify_options.forEach(function(o) {
if (!("output" in o)) o.output = {};
o.output.v8 = true;