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.../src/com.oracle.truffle.js/src/com/oracle/truffle/js/builtins/RegExpFunctionBuiltins.java
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| /* | ||
| * Copyright (c) 2024, 2024, Oracle and/or its affiliates. All rights reserved. | ||
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| * | ||
| * The Universal Permissive License (UPL), Version 1.0 | ||
| * | ||
| * Subject to the condition set forth below, permission is hereby granted to any | ||
| * person obtaining a copy of this software, associated documentation and/or | ||
| * data (collectively the "Software"), free of charge and under any and all | ||
| * copyright rights in the Software, and any and all patent rights owned or | ||
| * freely licensable by each licensor hereunder covering either (i) the | ||
| * unmodified Software as contributed to or provided by such licensor, or (ii) | ||
| * the Larger Works (as defined below), to deal in both | ||
| * | ||
| * (a) the Software, and | ||
| * | ||
| * (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if | ||
| * one is included with the Software each a "Larger Work" to which the Software | ||
| * is contributed by such licensors), | ||
| * | ||
| * without restriction, including without limitation the rights to copy, create | ||
| * derivative works of, display, perform, and distribute the Software and make, | ||
| * use, sell, offer for sale, import, export, have made, and have sold the | ||
| * Software and the Larger Work(s), and to sublicense the foregoing rights on | ||
| * either these or other terms. | ||
| * | ||
| * This license is subject to the following condition: | ||
| * | ||
| * The above copyright notice and either this complete permission notice or at a | ||
| * minimum a reference to the UPL must be included in all copies or substantial | ||
| * portions of the Software. | ||
| * | ||
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
| * SOFTWARE. | ||
| */ | ||
| package com.oracle.truffle.js.builtins; | ||
|
|
||
| import com.oracle.truffle.api.dsl.Cached; | ||
| import com.oracle.truffle.api.dsl.Fallback; | ||
| import com.oracle.truffle.api.dsl.Specialization; | ||
| import com.oracle.truffle.api.strings.TruffleString; | ||
| import com.oracle.truffle.api.strings.TruffleStringBuilder; | ||
| import com.oracle.truffle.api.strings.TruffleStringBuilderUTF16; | ||
| import com.oracle.truffle.js.nodes.function.JSBuiltin; | ||
| import com.oracle.truffle.js.nodes.function.JSBuiltinNode; | ||
| import com.oracle.truffle.js.runtime.Boundaries; | ||
| import com.oracle.truffle.js.runtime.Errors; | ||
| import com.oracle.truffle.js.runtime.JSConfig; | ||
| import com.oracle.truffle.js.runtime.JSContext; | ||
| import com.oracle.truffle.js.runtime.JSRuntime; | ||
| import com.oracle.truffle.js.runtime.Strings; | ||
| import com.oracle.truffle.js.runtime.builtins.BuiltinEnum; | ||
| import com.oracle.truffle.js.runtime.builtins.JSRegExp; | ||
| import com.oracle.truffle.js.runtime.util.StringBuilderProfile; | ||
|
|
||
| public class RegExpFunctionBuiltins extends JSBuiltinsContainer.SwitchEnum<RegExpFunctionBuiltins.RegExpFunction> { | ||
|
|
||
| public static final RegExpFunctionBuiltins BUILTINS = new RegExpFunctionBuiltins(); | ||
|
|
||
| protected RegExpFunctionBuiltins() { | ||
| super(JSRegExp.CLASS_NAME, RegExpFunction.class); | ||
| } | ||
|
|
||
| public enum RegExpFunction implements BuiltinEnum<RegExpFunction> { | ||
| escape; | ||
|
|
||
| @Override | ||
| public int getLength() { | ||
| return 1; | ||
| } | ||
|
|
||
| @Override | ||
| public int getECMAScriptVersion() { | ||
| return JSConfig.StagingECMAScriptVersion; | ||
| } | ||
|
|
||
| @Override | ||
| public Object createNode(JSContext context, JSBuiltin builtin, boolean construct, boolean newTarget) { | ||
| return RegExpFunctionBuiltinsFactory.JSRegExpEscapeNodeGen.create(context, builtin, args().fixedArgs(1).createArgumentNodes(context)); | ||
| } | ||
| } | ||
|
|
||
| abstract static class JSRegExpEscapeNode extends JSBuiltinNode { | ||
|
|
||
| JSRegExpEscapeNode(JSContext context, JSBuiltin builtin) { | ||
| super(context, builtin); | ||
| } | ||
|
|
||
| @Specialization | ||
| TruffleString escapeString(TruffleString input, | ||
| @Cached(parameters = "getContext().getStringLengthLimit()") StringBuilderProfile builderProfile, | ||
| @Cached TruffleString.ByteLengthOfCodePointNode lengthOfCodePointNode, | ||
| @Cached TruffleString.CodePointAtByteIndexNode codePointAtNode, | ||
| @Cached TruffleString.ReadCharUTF16Node readCharNode, | ||
| @Cached TruffleString.ByteIndexOfCodePointNode indexOfCodePointNode, | ||
| @Cached TruffleStringBuilder.AppendJavaStringUTF16Node appendJavaStringNode, | ||
| @Cached TruffleStringBuilder.AppendCodePointNode appendCodePointNode, | ||
| @Cached TruffleStringBuilder.ToStringNode toStringNode) { | ||
| int length = Strings.length(input); | ||
| int initialCapacity = Math.min(Math.max(length + 16, length + (length >> 1)), getContext().getStringLengthLimit()); | ||
| TruffleStringBuilderUTF16 escaped = builderProfile.newStringBuilder(initialCapacity); | ||
| for (int index = 0; index < length; index += Strings.lengthOfCodePointAt(lengthOfCodePointNode, input, index)) { | ||
| int cp = Strings.codePointAt(codePointAtNode, input, index); | ||
| if (StringBuilderProfile.length(escaped) == 0 && ((cp >= '0' && cp <= '9') || (cp >= 'a' && cp <= 'z') || (cp >= 'A' && cp <= 'Z'))) { | ||
| builderProfile.append(appendJavaStringNode, escaped, "\\x"); | ||
| builderProfile.append(appendJavaStringNode, escaped, Boundaries.integerToString(cp, 16)); | ||
| } else if (Strings.indexOf(indexOfCodePointNode, Strings.REGEXP_SYNTAX_CHARS_WITH_SOLIDUS, cp) >= 0) { | ||
| // SyntaxCharacter or U+002F (SOLIDUS) | ||
| builderProfile.append(appendCodePointNode, escaped, '\\'); | ||
| builderProfile.append(appendCodePointNode, escaped, cp); | ||
| } else if (cp == '\t') { | ||
| builderProfile.append(appendJavaStringNode, escaped, "\\t"); | ||
| } else if (cp == '\n') { | ||
| builderProfile.append(appendJavaStringNode, escaped, "\\n"); | ||
| } else if (cp == 0x0b) { | ||
| builderProfile.append(appendJavaStringNode, escaped, "\\v"); | ||
| } else if (cp == '\f') { | ||
| builderProfile.append(appendJavaStringNode, escaped, "\\f"); | ||
| } else if (cp == '\r') { | ||
| builderProfile.append(appendJavaStringNode, escaped, "\\r"); | ||
| } else if (Strings.indexOf(indexOfCodePointNode, Strings.REGEXP_OTHER_PUNCTUATORS, cp) >= 0 || JSRuntime.isWhiteSpaceOrLineTerminator(cp) || (cp >= 0xd800 && cp <= 0xdfff)) { | ||
| if (cp <= 0xff) { | ||
| builderProfile.append(appendJavaStringNode, escaped, "\\x"); | ||
| leftPad(builderProfile, appendCodePointNode, appendJavaStringNode, escaped, Boundaries.integerToString(cp, 16), 2); | ||
| } else { | ||
| int numCodeUnits = Strings.lengthOfCodePointAt(lengthOfCodePointNode, input, index); | ||
| for (int i = index; i < index + numCodeUnits; i++) { | ||
| char cu = Strings.charAt(readCharNode, input, i); | ||
| builderProfile.append(appendJavaStringNode, escaped, "\\u"); | ||
| leftPad(builderProfile, appendCodePointNode, appendJavaStringNode, escaped, Boundaries.integerToString(cu, 16), 4); | ||
| } | ||
| } | ||
| } else { | ||
| builderProfile.append(appendCodePointNode, escaped, cp); | ||
| } | ||
| } | ||
| return StringBuilderProfile.toString(toStringNode, escaped); | ||
| } | ||
|
|
||
| private static void leftPad(StringBuilderProfile builderProfile, TruffleStringBuilder.AppendCodePointNode appendCodePointNode, | ||
| TruffleStringBuilder.AppendJavaStringUTF16Node appendJavaStringNode, | ||
| TruffleStringBuilderUTF16 sb, String str, int padSize) { | ||
| int padding = padSize - str.length(); | ||
| if (padding > 0) { | ||
| builderProfile.repeat(appendCodePointNode, sb, '0', padding); | ||
| } | ||
| builderProfile.append(appendJavaStringNode, sb, str); | ||
| } | ||
|
|
||
| @Fallback | ||
| TruffleString escapeNotString(Object input) { | ||
| throw Errors.createTypeErrorNotAString(input); | ||
| } | ||
| } | ||
| } |
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