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package org.netbeans.modules.ruby;
import javax.swing.text.AbstractDocument;
import javax.swing.text.BadLocationException;
import org.netbeans.api.lexer.Token;
import org.netbeans.api.lexer.TokenId;
import org.netbeans.api.lexer.TokenSequence;
import org.netbeans.editor.BaseDocument;
import org.netbeans.modules.csl.api.OffsetRange;
import org.netbeans.modules.ruby.lexer.LexUtilities;
import org.netbeans.modules.ruby.lexer.RubyTokenId;
import org.netbeans.spi.editor.bracesmatching.BracesMatcher;
import org.netbeans.spi.editor.bracesmatching.MatcherContext;
/**
* Implementation of BracesMatcher interface for Ruby. It is based on original code
* from RubyKeystrokeHandler.findMatching
*
* @author Marek Slama
*/
public final class RubyBracesMatcher implements BracesMatcher {
MatcherContext context;
public RubyBracesMatcher (MatcherContext context) {
this.context = context;
}
public int [] findOrigin() throws InterruptedException, BadLocationException {
((AbstractDocument) context.getDocument()).readLock();
try {
BaseDocument doc = (BaseDocument) context.getDocument();
int offset = context.getSearchOffset();
TokenSequence<?extends RubyTokenId> ts = LexUtilities.getRubyTokenSequence(doc, offset);
if (ts != null) {
ts.move(offset);
if (!ts.moveNext()) {
return null;
}
Token<?extends RubyTokenId> token = ts.token();
if (token == null) {
return null;
}
TokenId id = token.id();
if (id == RubyTokenId.QUOTED_STRING_BEGIN) {
return new int [] { ts.offset(), ts.offset() + token.length() };
} else if (id == RubyTokenId.QUOTED_STRING_END) {
return new int [] { ts.offset(), ts.offset() + token.length() };
} else if (id == RubyTokenId.STRING_BEGIN) {
return new int [] { ts.offset(), ts.offset() + token.length() };
} else if (id == RubyTokenId.STRING_END) {
return new int [] { ts.offset(), ts.offset() + token.length() };
} else if (id == RubyTokenId.REGEXP_BEGIN) {
return new int [] { ts.offset(), ts.offset() + token.length() };
} else if (id == RubyTokenId.REGEXP_END) {
return new int [] { ts.offset(), ts.offset() + token.length() };
} else if (id == RubyTokenId.LPAREN) {
return new int [] { ts.offset(), ts.offset() + token.length() };
} else if (id == RubyTokenId.RPAREN) {
return new int [] { ts.offset(), ts.offset() + token.length() };
} else if (id == RubyTokenId.LBRACE) {
return new int [] { ts.offset(), ts.offset() + token.length() };
} else if (id == RubyTokenId.RBRACE) {
return new int [] { ts.offset(), ts.offset() + token.length() };
} else if (id == RubyTokenId.LBRACKET) {
return new int [] { ts.offset(), ts.offset() + token.length() };
} else if (id == RubyTokenId.DO && !LexUtilities.isEndmatchingDo(doc, ts.offset())) {
// No matching dot for "do" used in conditionals etc.
return null;
} else if (id == RubyTokenId.RBRACKET) {
return new int [] { ts.offset(), ts.offset() + token.length() };
} else if (id.primaryCategory().equals("keyword")) {
if (LexUtilities.isBeginToken(id, doc, ts)) {
return new int [] { ts.offset(), ts.offset() + token.length() };
} else if ((id == RubyTokenId.END) || LexUtilities.isIndentToken(id)) { // Find matching block
return new int [] { ts.offset(), ts.offset() + token.length() };
}
}
}
return null;
} finally {
((AbstractDocument) context.getDocument()).readUnlock();
}
}
public int [] findMatches() throws InterruptedException, BadLocationException {
((AbstractDocument) context.getDocument()).readLock();
try {
BaseDocument doc = (BaseDocument) context.getDocument();
int offset = context.getSearchOffset();
TokenSequence<?extends RubyTokenId> ts = LexUtilities.getRubyTokenSequence(doc, offset);
if (ts != null) {
ts.move(offset);
if (!ts.moveNext()) {
return null;
}
Token<?extends RubyTokenId> token = ts.token();
if (token == null) {
return null;
}
TokenId id = token.id();
OffsetRange r;
if (id == RubyTokenId.QUOTED_STRING_BEGIN) {
// Heredocs should be treated specially
if (token.text().toString().startsWith("<<")) {
r = LexUtilities.findHeredocEnd(ts, token);
return new int [] {r.getStart(), r.getEnd() };
}
r = LexUtilities.findFwd(doc, ts, RubyTokenId.QUOTED_STRING_BEGIN,
RubyTokenId.QUOTED_STRING_END);
return new int [] {r.getStart(), r.getEnd() };
} else if (id == RubyTokenId.QUOTED_STRING_END) {
String s = token.text().toString();
if (!"\"".equals(s) && !"\'".equals(s) && !")".equals(s)) {
r = LexUtilities.findHeredocBegin(ts, token);
if (r != OffsetRange.NONE) {
return new int [] {r.getStart(), r.getEnd() };
}
ts.move(offset);
}
r = LexUtilities.findBwd(doc, ts, RubyTokenId.QUOTED_STRING_BEGIN,
RubyTokenId.QUOTED_STRING_END);
return new int [] {r.getStart(), r.getEnd() };
} else if (id == RubyTokenId.STRING_BEGIN) {
// Heredocs should be treated specially
if (token.text().toString().startsWith("<<")) {
r = LexUtilities.findHeredocEnd(ts, token);
return new int [] {r.getStart(), r.getEnd() };
}
r = LexUtilities.findFwd(doc, ts, RubyTokenId.STRING_BEGIN, RubyTokenId.STRING_END);
return new int [] {r.getStart(), r.getEnd() };
} else if (id == RubyTokenId.STRING_END) {
String s = token.text().toString();
if (!"\"".equals(s) && !"\'".equals(s) && !")".equals(s)) {
r = LexUtilities.findHeredocBegin(ts, token);
if (r != OffsetRange.NONE) {
return new int [] {r.getStart(), r.getEnd() };
}
ts.move(offset);
}
r = LexUtilities.findBwd(doc, ts, RubyTokenId.STRING_BEGIN, RubyTokenId.STRING_END);
return new int [] {r.getStart(), r.getEnd() };
} else if (id == RubyTokenId.REGEXP_BEGIN) {
r = LexUtilities.findFwd(doc, ts, RubyTokenId.REGEXP_BEGIN, RubyTokenId.REGEXP_END);
return new int [] {r.getStart(), r.getEnd() };
} else if (id == RubyTokenId.REGEXP_END) {
r = LexUtilities.findBwd(doc, ts, RubyTokenId.REGEXP_BEGIN, RubyTokenId.REGEXP_END);
return new int [] {r.getStart(), r.getEnd() };
} else if (id == RubyTokenId.LPAREN) {
r = LexUtilities.findFwd(doc, ts, RubyTokenId.LPAREN, RubyTokenId.RPAREN);
return new int [] {r.getStart(), r.getEnd() };
} else if (id == RubyTokenId.RPAREN) {
r = LexUtilities.findBwd(doc, ts, RubyTokenId.LPAREN, RubyTokenId.RPAREN);
return new int [] {r.getStart(), r.getEnd() };
} else if (id == RubyTokenId.LBRACE) {
r = LexUtilities.findFwd(doc, ts, RubyTokenId.LBRACE, RubyTokenId.RBRACE);
return new int [] {r.getStart(), r.getEnd() };
} else if (id == RubyTokenId.RBRACE) {
r = LexUtilities.findBwd(doc, ts, RubyTokenId.LBRACE, RubyTokenId.RBRACE);
return new int [] {r.getStart(), r.getEnd() };
} else if (id == RubyTokenId.LBRACKET) {
r = LexUtilities.findFwd(doc, ts, RubyTokenId.LBRACKET, RubyTokenId.RBRACKET);
return new int [] {r.getStart(), r.getEnd() };
} else if (id == RubyTokenId.DO && !LexUtilities.isEndmatchingDo(doc, ts.offset())) {
// No matching dot for "do" used in conditionals etc.
return null;
} else if (id == RubyTokenId.RBRACKET) {
r = LexUtilities.findBwd(doc, ts, RubyTokenId.LBRACKET, RubyTokenId.RBRACKET);
return new int [] {r.getStart(), r.getEnd() };
} else if (id.primaryCategory().equals("keyword")) {
if (LexUtilities.isBeginToken(id, doc, ts)) {
r = LexUtilities.findEnd(doc, ts);
return new int [] {r.getStart(), r.getEnd() };
} else if ((id == RubyTokenId.END) || LexUtilities.isIndentToken(id)) { // Find matching block
r = LexUtilities.findBegin(doc, ts);
return new int [] {r.getStart(), r.getEnd() };
}
}
}
return null;
} finally {
((AbstractDocument) context.getDocument()).readUnlock();
}
}
}