kopia lustrzana https://github.com/TeamNewPipe/NewPipeExtractor
Fix compile problems and optimize TokenStream
litetex
rodzic
bcf24def8b
commit
907fc2ac52
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@ -2,7 +2,6 @@ package org.schabi.newpipe.extractor.utils.jsextractor;
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import org.mozilla.javascript.Context;
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import org.mozilla.javascript.Kit;
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import org.mozilla.javascript.ObjToIntMap;
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import org.mozilla.javascript.ScriptRuntime;
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import org.schabi.newpipe.extractor.exceptions.ParsingException;
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@ -38,12 +37,10 @@ class TokenStream {
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this.languageVersion = languageVersion;
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}
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static boolean isKeyword(final String s, final int version, final boolean isStrict) {
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return Token.EOF != stringToKeyword(s, version, isStrict);
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}
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private static Token stringToKeyword(final String name, final int version,
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final boolean isStrict) {
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private static Token stringToKeyword(
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final String name,
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final int version,
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final boolean isStrict) {
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if (version < Context.VERSION_ES6) {
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return stringToKeywordForJS(name);
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}
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@ -343,7 +340,7 @@ class TokenStream {
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}
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ungetChar(c);
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String str = getStringFromBuffer();
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final String str = getStringFromBuffer();
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if (!containsEscape) {
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// OPT we shouldn't have to make a string (object!) to
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// check if it's a keyword.
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@ -353,30 +350,17 @@ class TokenStream {
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if (result != Token.EOF) {
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if ((result == Token.LET || result == Token.YIELD)
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&& languageVersion < Context.VERSION_1_7) {
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// LET and YIELD are tokens only in 1.7 and later
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string = result == Token.LET ? "let" : "yield";
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result = Token.NAME;
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}
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// Save the string in case we need to use in
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// object literal definitions.
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this.string = (String) allStrings.intern(str);
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if (result != Token.RESERVED) {
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return result;
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} else if (languageVersion >= Context.VERSION_ES6) {
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return result;
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} else if (!IS_RESERVED_KEYWORD_AS_IDENTIFIER) {
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if (result != Token.RESERVED
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|| languageVersion >= Context.VERSION_ES6
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|| !IS_RESERVED_KEYWORD_AS_IDENTIFIER) {
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return result;
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}
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}
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} else if (isKeyword(
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str,
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languageVersion,
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STRICT_MODE)) {
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// If a string contains unicodes, and converted to a keyword,
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// we convert the last character back to unicode
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str = convertLastCharToHex(str);
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}
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this.string = (String) allStrings.intern(str);
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return Token.NAME;
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}
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@ -466,7 +450,7 @@ class TokenStream {
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}
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}
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ungetChar(c);
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this.string = getStringFromBuffer();
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tokenEnd = cursor;
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return Token.NUMBER;
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}
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@ -562,7 +546,7 @@ class TokenStream {
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escapeVal = Kit.xDigitToInt(c, 0);
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if (escapeVal < 0) {
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addToString('x');
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continue strLoop;
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continue;
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}
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final int c1 = c;
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c = getChar();
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@ -570,7 +554,7 @@ class TokenStream {
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if (escapeVal < 0) {
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addToString('x');
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addToString(c1);
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continue strLoop;
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continue;
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}
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// got 2 hex digits
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c = escapeVal;
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@ -580,7 +564,7 @@ class TokenStream {
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// Remove line terminator after escape to follow
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// SpiderMonkey and C/C++
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c = getChar();
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continue strLoop;
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continue;
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default:
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if ('0' <= c && c < '8') {
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@ -605,8 +589,7 @@ class TokenStream {
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c = getChar(false);
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}
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final String str = getStringFromBuffer();
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this.string = (String) allStrings.intern(str);
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tokenEnd = cursor;
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return quoteChar == '`' ? Token.TEMPLATE_LITERAL : Token.STRING;
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}
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@ -722,14 +705,13 @@ class TokenStream {
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return Token.GT;
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case '*':
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if (languageVersion >= Context.VERSION_ES6) {
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if (matchChar('*')) {
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if (matchChar('=')) {
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return Token.ASSIGN_EXP;
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}
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return Token.EXP;
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if (languageVersion >= Context.VERSION_ES6 && matchChar('*')) {
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if (matchChar('=')) {
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return Token.ASSIGN_EXP;
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}
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return Token.EXP;
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}
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if (matchChar('=')) {
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return Token.ASSIGN_MUL;
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}
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@ -920,7 +902,6 @@ class TokenStream {
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}
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if (peekChar() == '*') {
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tokenEnd = cursor - 1;
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this.string = new String(stringBuffer, 0, stringBufferTop);
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throw new ParsingException("msg.unterminated.re.lit");
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}
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}
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@ -944,7 +925,6 @@ class TokenStream {
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}
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addToString(c);
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}
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final int reEnd = stringBufferTop;
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while (true) {
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c = getCharIgnoreLineEnd();
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@ -959,7 +939,6 @@ class TokenStream {
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}
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tokenEnd = start + stringBufferTop + 2; // include slashes
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this.string = new String(stringBuffer, 0, reEnd);
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}
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private String getStringFromBuffer() {
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@ -1019,7 +998,6 @@ class TokenStream {
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for (;;) {
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if (sourceCursor == sourceString.length()) {
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hitEOF = true;
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return EOF_CHAR;
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}
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cursor++;
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@ -1031,7 +1009,6 @@ class TokenStream {
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continue;
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}
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lineEndChar = -1;
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lineStart = sourceCursor - 1;
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lineno++;
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}
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@ -1078,42 +1055,6 @@ class TokenStream {
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tokenEnd = cursor;
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}
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/** Return the current position of the scanner cursor. */
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public int getCursor() {
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return cursor;
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}
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/** Return the absolute source offset of the last scanned token. */
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public int getTokenBeg() {
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return tokenBeg;
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}
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/** Return the absolute source end-offset of the last scanned token. */
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public int getTokenEnd() {
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return tokenEnd;
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}
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/** Return tokenEnd - tokenBeg */
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public int getTokenLength() {
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return tokenEnd - tokenBeg;
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}
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public String getTokenRaw() {
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return sourceString.substring(tokenBeg, tokenEnd);
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}
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private static String convertLastCharToHex(final String str) {
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final int lastIndex = str.length() - 1;
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final StringBuilder buf = new StringBuilder(str.substring(0, lastIndex));
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buf.append("\\u");
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final String hexCode = Integer.toHexString(str.charAt(lastIndex));
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for (int i = 0; i < 4 - hexCode.length(); ++i) {
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buf.append('0');
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}
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buf.append(hexCode);
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return buf.toString();
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}
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public Token nextToken() throws ParsingException {
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Token tt = getToken();
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while (tt == Token.EOL || tt == Token.COMMENT) {
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@ -1124,19 +1065,14 @@ class TokenStream {
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// stuff other than whitespace since start of line
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private boolean dirtyLine;
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private String string = "";
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private char[] stringBuffer = new char[128];
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private int stringBufferTop;
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private final ObjToIntMap allStrings = new ObjToIntMap(50);
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// Room to backtrace from to < on failed match of the last - in <!--
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private final int[] ungetBuffer = new int[3];
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private int ungetCursor;
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private boolean hitEOF = false;
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private int lineStart = 0;
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private int lineEndChar = -1;
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int lineno;
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