mirror of
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661 lines
19 KiB
Plaintext
661 lines
19 KiB
Plaintext
/*
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* 09/01/2014
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*
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* DartTokenMaker.java - Token parser for Dart.
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*
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* This library is distributed under a modified BSD license. See the included
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* RSyntaxTextArea.License.txt file for details.
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*/
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package org.fife.ui.rsyntaxtextarea.modes;
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import java.io.*;
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import javax.swing.text.Segment;
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import org.fife.ui.rsyntaxtextarea.*;
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/**
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* Scanner for Dart files. Its states could be simplified, but are
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* kept the way they are to keep a degree of similarity (i.e. copy/paste)
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* between it and HTML/JSP/PHPTokenMaker. This should cause no difference in
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* performance.<p>
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*
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* This implementation was created using
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* <a href="http://www.jflex.de/">JFlex</a> 1.4.1; however, the generated file
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* was modified for performance. Memory allocation needs to be almost
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* completely removed to be competitive with the handwritten lexers (subclasses
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* of <code>AbstractTokenMaker</code>, so this class has been modified so that
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* Strings are never allocated (via yytext()), and the scanner never has to
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* worry about refilling its buffer (needlessly copying chars around).
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* We can achieve this because RText always scans exactly 1 line of tokens at a
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* time, and hands the scanner this line as an array of characters (a Segment
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* really). Since tokens contain pointers to char arrays instead of Strings
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* holding their contents, there is no need for allocating new memory for
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* Strings.<p>
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*
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* The actual algorithm generated for scanning has, of course, not been
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* modified.<p>
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*
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* If you wish to regenerate this file yourself, keep in mind the following:
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* <ul>
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* <li>The generated <code>DartTokenMaker.java</code> file will contain two
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* definitions of both <code>zzRefill</code> and <code>yyreset</code>.
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* You should hand-delete the second of each definition (the ones
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* generated by the lexer), as these generated methods modify the input
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* buffer, which we'll never have to do.</li>
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* <li>You should also change the declaration/definition of zzBuffer to NOT
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* be initialized. This is a needless memory allocation for us since we
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* will be pointing the array somewhere else anyway.</li>
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* <li>You should NOT call <code>yylex()</code> on the generated scanner
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* directly; rather, you should use <code>getTokenList</code> as you would
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* with any other <code>TokenMaker</code> instance.</li>
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* </ul>
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*
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* @author Robert Futrell
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* @version 1.0
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*/
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%%
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%public
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%class DartTokenMaker
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%extends AbstractJFlexCTokenMaker
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%unicode
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%type org.fife.ui.rsyntaxtextarea.Token
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%{
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/**
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* Token type specifying we're in a JavaScript multi-line comment.
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*/
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private static final int INTERNAL_IN_JS_MLC = -8;
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/**
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* Token type specifying we're in an invalid multi-line JS string.
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*/
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private static final int INTERNAL_IN_JS_STRING_INVALID = -10;
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/**
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* Token type specifying we're in a valid multi-line JS string.
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*/
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private static final int INTERNAL_IN_JS_STRING_VALID = -11;
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/**
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* Token type specifying we're in an invalid multi-line JS single-quoted string.
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*/
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private static final int INTERNAL_IN_JS_CHAR_INVALID = -12;
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/**
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* Token type specifying we're in a valid multi-line JS single-quoted string.
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*/
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private static final int INTERNAL_IN_JS_CHAR_VALID = -13;
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/**
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* When in the JS_STRING state, whether the current string is valid.
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*/
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private boolean validJSString;
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/**
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* The version of JavaScript being highlighted.
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*/
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private static String jsVersion;
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/**
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* Language state set on JS tokens. Must be 0.
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*/
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private static final int LANG_INDEX_DEFAULT = 0;
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/**
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* Constructor. This must be here because JFlex does not generate a
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* no-parameter constructor.
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*/
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public DartTokenMaker() {
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super();
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}
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static {
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jsVersion = "1.0";
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}
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/**
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* Adds the token specified to the current linked list of tokens as an
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* "end token;" that is, at <code>zzMarkedPos</code>.
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*
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* @param tokenType The token's type.
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*/
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private void addEndToken(int tokenType) {
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addToken(zzMarkedPos,zzMarkedPos, tokenType);
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}
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/**
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* Adds the token specified to the current linked list of tokens.
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*
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* @param tokenType The token's type.
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* @see #addToken(int, int, int)
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*/
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private void addHyperlinkToken(int start, int end, int tokenType) {
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int so = start + offsetShift;
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addToken(zzBuffer, start,end, tokenType, so, true);
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}
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/**
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* Adds the token specified to the current linked list of tokens.
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*
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* @param tokenType The token's type.
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*/
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private void addToken(int tokenType) {
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addToken(zzStartRead, zzMarkedPos-1, tokenType);
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}
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/**
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* Adds the token specified to the current linked list of tokens.
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*
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* @param tokenType The token's type.
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*/
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private void addToken(int start, int end, int tokenType) {
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int so = start + offsetShift;
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addToken(zzBuffer, start,end, tokenType, so);
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}
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/**
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* Adds the token specified to the current linked list of tokens.
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*
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* @param array The character array.
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* @param start The starting offset in the array.
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* @param end The ending offset in the array.
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* @param tokenType The token's type.
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* @param startOffset The offset in the document at which this token
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* occurs.
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*/
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@Override
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public void addToken(char[] array, int start, int end, int tokenType, int startOffset) {
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super.addToken(array, start,end, tokenType, startOffset);
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zzStartRead = zzMarkedPos;
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}
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/**
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* Returns the closest {@link TokenTypes "standard" token type} for a given
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* "internal" token type (e.g. one whose value is <code>< 0</code>).
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*/
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@Override
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public int getClosestStandardTokenTypeForInternalType(int type) {
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switch (type) {
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case INTERNAL_IN_JS_MLC:
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return TokenTypes.COMMENT_MULTILINE;
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case INTERNAL_IN_JS_STRING_INVALID:
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case INTERNAL_IN_JS_STRING_VALID:
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case INTERNAL_IN_JS_CHAR_INVALID:
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case INTERNAL_IN_JS_CHAR_VALID:
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return TokenTypes.LITERAL_STRING_DOUBLE_QUOTE;
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}
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return type;
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}
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/**
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* Returns the JavaScript version being highlighted.
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*
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* @return Supported JavaScript version.
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* @see #isJavaScriptCompatible(String)
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*/
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public static String getJavaScriptVersion() {
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return jsVersion;
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public String[] getLineCommentStartAndEnd(int languageIndex) {
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return new String[] { "//", null };
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}
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/**
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* Returns the first token in the linked list of tokens generated
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* from <code>text</code>. This method must be implemented by
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* subclasses so they can correctly implement syntax highlighting.
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*
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* @param text The text from which to get tokens.
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* @param initialTokenType The token type we should start with.
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* @param startOffset The offset into the document at which
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* <code>text</code> starts.
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* @return The first <code>Token</code> in a linked list representing
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* the syntax highlighted text.
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*/
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public Token getTokenList(Segment text, int initialTokenType, int startOffset) {
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resetTokenList();
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this.offsetShift = -text.offset + startOffset;
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validJSString = true;
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int languageIndex = LANG_INDEX_DEFAULT;
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// Start off in the proper state.
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int state = YYINITIAL;
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switch (initialTokenType) {
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case Token.LITERAL_STRING_DOUBLE_QUOTE:
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state = DART_MULTILINE_STRING_DOUBLE;
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break;
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case Token.LITERAL_CHAR:
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state = DART_MULTILINE_STRING_SINGLE;
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break;
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case INTERNAL_IN_JS_MLC:
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state = JS_MLC;
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break;
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case INTERNAL_IN_JS_STRING_INVALID:
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state = JS_STRING;
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validJSString = false;
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break;
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case INTERNAL_IN_JS_STRING_VALID:
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state = JS_STRING;
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break;
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case INTERNAL_IN_JS_CHAR_INVALID:
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state = JS_CHAR;
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validJSString = false;
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break;
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case INTERNAL_IN_JS_CHAR_VALID:
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state = JS_CHAR;
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break;
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default:
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state = YYINITIAL; // ???
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break;
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}
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setLanguageIndex(languageIndex);
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start = text.offset;
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s = text;
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try {
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yyreset(zzReader);
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yybegin(state);
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return yylex();
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} catch (IOException ioe) {
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ioe.printStackTrace();
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return new TokenImpl();
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}
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}
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/**
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* Returns whether features for a specific JS version should be honored
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* while highlighting.
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*
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* @param version JavaScript version required
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* @return Whether the JavaScript version is the same or greater than
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* version required.
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*/
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public static boolean isJavaScriptCompatible(String version) {
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return jsVersion.compareTo(version) >= 0;
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}
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/**
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* Set the supported JavaScript version because some keywords were
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* introduced on or after this version.
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*
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* @param javaScriptVersion The version of JavaScript to support, such as
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* "<code>1.5</code>" or "<code>1.6</code>".
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* @see #isJavaScriptCompatible(String)
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* @see #getJavaScriptVersion()
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*/
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public static void setJavaScriptVersion(String javaScriptVersion) {
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jsVersion = javaScriptVersion;
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}
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/**
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* Refills the input buffer.
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*
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* @return <code>true</code> if EOF was reached, otherwise
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* <code>false</code>.
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*/
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private boolean zzRefill() {
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return zzCurrentPos>=s.offset+s.count;
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}
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/**
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* Resets the scanner to read from a new input stream.
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* Does not close the old reader.
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*
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* All internal variables are reset, the old input stream
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* <b>cannot</b> be reused (internal buffer is discarded and lost).
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* Lexical state is set to <tt>YY_INITIAL</tt>.
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*
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* @param reader the new input stream
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*/
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public final void yyreset(Reader reader) {
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// 's' has been updated.
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zzBuffer = s.array;
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/*
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* We replaced the line below with the two below it because zzRefill
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* no longer "refills" the buffer (since the way we do it, it's always
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* "full" the first time through, since it points to the segment's
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* array). So, we assign zzEndRead here.
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*/
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//zzStartRead = zzEndRead = s.offset;
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zzStartRead = s.offset;
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zzEndRead = zzStartRead + s.count - 1;
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zzCurrentPos = zzMarkedPos = zzPushbackPos = s.offset;
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zzLexicalState = YYINITIAL;
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zzReader = reader;
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zzAtBOL = true;
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zzAtEOF = false;
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}
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%}
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Whitespace = ([ \t\f]+)
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LineTerminator = ([\n])
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Letter = [A-Za-z]
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NonzeroDigit = [1-9]
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Digit = ("0"|{NonzeroDigit})
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HexDigit = ({Digit}|[A-Fa-f])
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OctalDigit = ([0-7])
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LetterOrDigit = ({Letter}|{Digit})
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EscapedSourceCharacter = ("u"{HexDigit}{HexDigit}{HexDigit}{HexDigit})
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NonSeparator = ([^\t\f\r\n\ \(\)\{\}\[\]\;\,\.\=\>\<\!\~\?\:\+\-\*\/\&\|\^\%\"\']|"#"|"\\")
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IdentifierStart = ({Letter}|"_"|"$")
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IdentifierPart = ({IdentifierStart}|{Digit}|("\\"{EscapedSourceCharacter}))
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JS_MLCBegin = "/*"
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JS_MLCEnd = "*/"
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JS_LineCommentBegin = "//"
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JS_IntegerHelper1 = (({NonzeroDigit}{Digit}*)|"0")
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JS_IntegerHelper2 = ("0"(([xX]{HexDigit}+)|({OctalDigit}*)))
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JS_IntegerLiteral = ({JS_IntegerHelper1}[lL]?)
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JS_HexLiteral = ({JS_IntegerHelper2}[lL]?)
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JS_FloatHelper1 = ([fFdD]?)
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JS_FloatHelper2 = ([eE][+-]?{Digit}+{JS_FloatHelper1})
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JS_FloatLiteral1 = ({Digit}+"."({JS_FloatHelper1}|{JS_FloatHelper2}|{Digit}+({JS_FloatHelper1}|{JS_FloatHelper2})))
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JS_FloatLiteral2 = ("."{Digit}+({JS_FloatHelper1}|{JS_FloatHelper2}))
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JS_FloatLiteral3 = ({Digit}+{JS_FloatHelper2})
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JS_FloatLiteral = ({JS_FloatLiteral1}|{JS_FloatLiteral2}|{JS_FloatLiteral3}|({Digit}+[fFdD]))
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JS_ErrorNumberFormat = (({JS_IntegerLiteral}|{JS_HexLiteral}|{JS_FloatLiteral}){NonSeparator}+)
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JS_Separator = ([\(\)\{\}\[\]\]])
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JS_Separator2 = ([\;,.])
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JS_NonAssignmentOperator = ("+"|"-"|"<="|"^"|"++"|"<"|"*"|">="|"%"|"--"|">"|"/"|"!="|"?"|">>"|"!"|"&"|"=="|":"|">>"|"~"|"||"|"&&"|">>>")
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JS_AssignmentOperator = ("="|"-="|"*="|"/="|"|="|"&="|"^="|"+="|"%="|"<<="|">>="|">>>=")
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JS_Operator = ({JS_NonAssignmentOperator}|{JS_AssignmentOperator})
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JS_Identifier = ({IdentifierStart}{IdentifierPart}*)
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JS_ErrorIdentifier = ({NonSeparator}+)
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DART_Annotation = ("@"{Letter}{LetterOrDigit}*)
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URLGenDelim = ([:\/\?#\[\]@])
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URLSubDelim = ([\!\$&'\(\)\*\+,;=])
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URLUnreserved = ({LetterOrDigit}|"_"|[\-\.\~])
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URLCharacter = ({URLGenDelim}|{URLSubDelim}|{URLUnreserved}|[%])
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URLCharacters = ({URLCharacter}*)
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URLEndCharacter = ([\/\$]|{LetterOrDigit})
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URL = (((https?|f(tp|ile))"://"|"www.")({URLCharacters}{URLEndCharacter})?)
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%state JS_STRING
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%state JS_CHAR
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%state JS_MLC
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%state JS_EOL_COMMENT
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%state DART_MULTILINE_STRING_DOUBLE
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%state DART_MULTILINE_STRING_SINGLE
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%%
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<YYINITIAL> {
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// Keywords
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"abstract" |
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"assert" |
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"class" |
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"const" |
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"extends" |
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"factory" |
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"get" |
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"implements" |
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"import" |
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"interface" |
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"library" |
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"negate" |
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"new" |
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"null" |
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"operator" |
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"set" |
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"source" |
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"static" |
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"super" |
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"this" |
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"typedef" |
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"var" |
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"final" |
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"if" |
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"else" |
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"for" |
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"in" |
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"is" |
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"while" |
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"do" |
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"switch" |
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"case" |
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"default" |
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"in" |
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"try" |
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"catch" |
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"finally" |
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"break" |
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"continue" |
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"throw" |
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"assert" { addToken(Token.RESERVED_WORD); }
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"return" { addToken(Token.RESERVED_WORD_2); }
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// Literals.
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"false" |
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"true" { addToken(Token.LITERAL_BOOLEAN); }
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"NaN" { addToken(Token.RESERVED_WORD); }
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"Infinity" { addToken(Token.RESERVED_WORD); }
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// Data types
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"bool" |
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"int" |
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"double" |
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"num" |
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"void" { addToken(Token.DATA_TYPE); }
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// stdlib types
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"AssertionError" |
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"Clock" |
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"Collection" |
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"Comparable" |
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"Date" |
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"Dispatcher" |
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"Duration" |
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"Expect" |
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"FallThroughError" |
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"Function" |
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"HashMap" |
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"HashSet" |
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"Hashable" |
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"Isolate" |
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"Iterable" |
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"Iterator" |
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"LinkedHashMap" |
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"List" |
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"Map" |
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"Match" |
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"Math" |
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"Object" |
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"Pattern" |
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"Promise" |
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"Proxy" |
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"Queue" |
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"ReceivePort" |
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"RegExp" |
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"SendPort" |
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"Set" |
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"StopWatch" |
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"String" |
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"StringBuffer" |
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"Strings" |
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"TimeZone" |
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"TypeError" |
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// stdlib exceptions
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"BadNumberFormatException" |
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"ClosureArgumentMismatchException" |
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"EmptyQueueException" |
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"Exception" |
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"ExpectException" |
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"IllegalAccessException" |
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"IllegalArgumentException" |
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"IllegalJSRegExpException" |
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"IndexOutOfRangeException" |
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"IntegerDivisionByZeroException" |
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"NoMoreElementsException" |
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"NoSuchMethodException" |
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"NotImplementedException" |
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"NullPointerException" |
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"ObjectNotClosureException" |
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"OutOfMemoryException" |
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"StackOverflowException" |
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"UnsupportedOperationException" |
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"WrongArgumentCountException" { addToken(Token.FUNCTION); }
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{LineTerminator} { addNullToken(); return firstToken; }
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{JS_Identifier} { addToken(Token.IDENTIFIER); }
|
|
{Whitespace} { addToken(Token.WHITESPACE); }
|
|
|
|
/* Multi-line string literals. */
|
|
\"\"\" { start = zzMarkedPos-3; yybegin(DART_MULTILINE_STRING_DOUBLE); }
|
|
\'\'\' { start = zzMarkedPos-3; yybegin(DART_MULTILINE_STRING_SINGLE); }
|
|
|
|
/* String/Character literals. */
|
|
[\'] { start = zzMarkedPos-1; validJSString = true; yybegin(JS_CHAR); }
|
|
[\"] { start = zzMarkedPos-1; validJSString = true; yybegin(JS_STRING); }
|
|
|
|
{DART_Annotation} { addToken(Token.ANNOTATION); }
|
|
/* Comment literals. */
|
|
"/**/" { addToken(Token.COMMENT_MULTILINE); }
|
|
{JS_MLCBegin} { start = zzMarkedPos-2; yybegin(JS_MLC); }
|
|
{JS_LineCommentBegin} { start = zzMarkedPos-2; yybegin(JS_EOL_COMMENT); }
|
|
|
|
/* Deprecated stuff */
|
|
"#library" |
|
|
"#import" |
|
|
"#source" |
|
|
"#resource" { addToken(Token.RESERVED_WORD); }
|
|
|
|
/* Separators. */
|
|
{JS_Separator} { addToken(Token.SEPARATOR); }
|
|
{JS_Separator2} { addToken(Token.IDENTIFIER); }
|
|
|
|
/* Operators. */
|
|
{JS_Operator} { addToken(Token.OPERATOR); }
|
|
|
|
/* Numbers */
|
|
{JS_IntegerLiteral} { addToken(Token.LITERAL_NUMBER_DECIMAL_INT); }
|
|
{JS_HexLiteral} { addToken(Token.LITERAL_NUMBER_HEXADECIMAL); }
|
|
{JS_FloatLiteral} { addToken(Token.LITERAL_NUMBER_FLOAT); }
|
|
{JS_ErrorNumberFormat} { addToken(Token.ERROR_NUMBER_FORMAT); }
|
|
|
|
{JS_ErrorIdentifier} { addToken(Token.ERROR_IDENTIFIER); }
|
|
|
|
/* Ended with a line not in a string or comment. */
|
|
<<EOF>> { addNullToken(); return firstToken; }
|
|
|
|
/* Catch any other (unhandled) characters and flag them as bad. */
|
|
. { addToken(Token.ERROR_IDENTIFIER); }
|
|
|
|
}
|
|
|
|
<DART_MULTILINE_STRING_DOUBLE> {
|
|
[^\"\\\n]* {}
|
|
\\.? { /* Skip escaped chars, handles case: '\"""'. */ }
|
|
\"\"\" { addToken(start,zzStartRead+2, Token.LITERAL_STRING_DOUBLE_QUOTE); yybegin(YYINITIAL); }
|
|
\" {}
|
|
\n |
|
|
<<EOF>> { addToken(start,zzStartRead-1, Token.LITERAL_STRING_DOUBLE_QUOTE); return firstToken; }
|
|
}
|
|
|
|
|
|
<DART_MULTILINE_STRING_SINGLE> {
|
|
[^\'\\\n]* {}
|
|
\\.? { /* Skip escaped chars, handles case: "\'''". */ }
|
|
\'\'\' { addToken(start,zzStartRead+2, Token.LITERAL_CHAR); yybegin(YYINITIAL); }
|
|
\' {}
|
|
\n |
|
|
<<EOF>> { addToken(start,zzStartRead-1, Token.LITERAL_CHAR); return firstToken; }
|
|
}
|
|
|
|
<JS_STRING> {
|
|
[^\n\\\"]+ {}
|
|
\\x{HexDigit}{2} {}
|
|
\\x { /* Invalid latin-1 character \xXX */ validJSString = false; }
|
|
\\u{HexDigit}{4} {}
|
|
\\u { /* Invalid Unicode character \\uXXXX */ validJSString = false; }
|
|
\\. { /* Skip all escaped chars. */ }
|
|
\\ { /* Line ending in '\' => continue to next line. */
|
|
if (validJSString) {
|
|
addToken(start,zzStartRead, Token.LITERAL_STRING_DOUBLE_QUOTE);
|
|
addEndToken(INTERNAL_IN_JS_STRING_VALID);
|
|
}
|
|
else {
|
|
addToken(start,zzStartRead, Token.ERROR_STRING_DOUBLE);
|
|
addEndToken(INTERNAL_IN_JS_STRING_INVALID);
|
|
}
|
|
return firstToken;
|
|
}
|
|
\" { int type = validJSString ? Token.LITERAL_STRING_DOUBLE_QUOTE : Token.ERROR_STRING_DOUBLE; addToken(start,zzStartRead, type); yybegin(YYINITIAL); }
|
|
\n |
|
|
<<EOF>> { addToken(start,zzStartRead-1, Token.ERROR_STRING_DOUBLE); addNullToken(); return firstToken; }
|
|
}
|
|
|
|
<JS_CHAR> {
|
|
[^\n\\\']+ {}
|
|
\\x{HexDigit}{2} {}
|
|
\\x { /* Invalid latin-1 character \xXX */ validJSString = false; }
|
|
\\u{HexDigit}{4} {}
|
|
\\u { /* Invalid Unicode character \\uXXXX */ validJSString = false; }
|
|
\\. { /* Skip all escaped chars. */ }
|
|
\\ { /* Line ending in '\' => continue to next line. */
|
|
if (validJSString) {
|
|
addToken(start,zzStartRead, Token.LITERAL_CHAR);
|
|
addEndToken(INTERNAL_IN_JS_CHAR_VALID);
|
|
}
|
|
else {
|
|
addToken(start,zzStartRead, Token.ERROR_CHAR);
|
|
addEndToken(INTERNAL_IN_JS_CHAR_INVALID);
|
|
}
|
|
return firstToken;
|
|
}
|
|
\' { int type = validJSString ? Token.LITERAL_CHAR : Token.ERROR_CHAR; addToken(start,zzStartRead, type); yybegin(YYINITIAL); }
|
|
\n |
|
|
<<EOF>> { addToken(start,zzStartRead-1, Token.ERROR_CHAR); addNullToken(); return firstToken; }
|
|
}
|
|
|
|
<JS_MLC> {
|
|
// JavaScript MLC's. This state is essentially Java's MLC state.
|
|
[^hwf\n\*]+ {}
|
|
{URL} { int temp=zzStartRead; addToken(start,zzStartRead-1, Token.COMMENT_MULTILINE); addHyperlinkToken(temp,zzMarkedPos-1, Token.COMMENT_MULTILINE); start = zzMarkedPos; }
|
|
[hwf] {}
|
|
{JS_MLCEnd} { yybegin(YYINITIAL); addToken(start,zzStartRead+1, Token.COMMENT_MULTILINE); }
|
|
\* {}
|
|
\n |
|
|
<<EOF>> { addToken(start,zzStartRead-1, Token.COMMENT_MULTILINE); addEndToken(INTERNAL_IN_JS_MLC); return firstToken; }
|
|
}
|
|
|
|
<JS_EOL_COMMENT> {
|
|
[^hwf\n]+ {}
|
|
{URL} { int temp=zzStartRead; addToken(start,zzStartRead-1, Token.COMMENT_EOL); addHyperlinkToken(temp,zzMarkedPos-1, Token.COMMENT_EOL); start = zzMarkedPos; }
|
|
[hwf] {}
|
|
\n |
|
|
<<EOF>> { addToken(start,zzStartRead-1, Token.COMMENT_EOL); addNullToken(); return firstToken; }
|
|
}
|