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Treepat is a language to recognise patterns in trees in a similar way as regular expressions recognize patterns in strings. Treepat includes analogous operators to regex union, concatenation, and closure, which are extended to the notion of trees.
// Generated from tree_format/TreeFormat.g4 by ANTLR 4.1
package tree_format;
import org.antlr.v4.runtime.atn.*;
import org.antlr.v4.runtime.dfa.DFA;
import org.antlr.v4.runtime.*;
import org.antlr.v4.runtime.misc.*;
import org.antlr.v4.runtime.tree.*;
import java.util.List;
import java.util.Iterator;
import java.util.ArrayList;
@SuppressWarnings({"all", "warnings", "unchecked", "unused", "cast"})
public class TreeFormatParser extends Parser {
protected static final DFA[] _decisionToDFA;
protected static final PredictionContextCache _sharedContextCache =
new PredictionContextCache();
public static final int
COLON=1, STRING=2, MARKLESS_STRING=3, NEWLINE=4, WS=5, INDENT=6, DEDENT=7;
public static final String[] tokenNames = {
"", "':'", "STRING", "MARKLESS_STRING", "NEWLINE", "WS", "INDENT",
"DEDENT"
};
public static final int
RULE_subtree = 0, RULE_child = 1, RULE_sibling = 2, RULE_node = 3, RULE_information = 4;
public static final String[] ruleNames = {
"subtree", "child", "sibling", "node", "information"
};
@Override
public String getGrammarFileName() { return "TreeFormat.g4"; }
@Override
public String[] getTokenNames() { return tokenNames; }
@Override
public String[] getRuleNames() { return ruleNames; }
@Override
public ATN getATN() { return _ATN; }
public TreeFormatParser(TokenStream input) {
super(input);
_interp = new ParserATNSimulator(this,_ATN,_decisionToDFA,_sharedContextCache);
}
public static class SubtreeContext extends ParserRuleContext {
public ChildContext child() {
return getRuleContext(ChildContext.class,0);
}
public List NEWLINE() { return getTokens(TreeFormatParser.NEWLINE); }
public TerminalNode NEWLINE(int i) {
return getToken(TreeFormatParser.NEWLINE, i);
}
public NodeContext node() {
return getRuleContext(NodeContext.class,0);
}
public SubtreeContext(ParserRuleContext parent, int invokingState) {
super(parent, invokingState);
}
@Override public int getRuleIndex() { return RULE_subtree; }
@Override
public void enterRule(ParseTreeListener listener) {
if ( listener instanceof TreeFormatListener ) ((TreeFormatListener)listener).enterSubtree(this);
}
@Override
public void exitRule(ParseTreeListener listener) {
if ( listener instanceof TreeFormatListener ) ((TreeFormatListener)listener).exitSubtree(this);
}
@Override
public T accept(ParseTreeVisitor visitor) {
if ( visitor instanceof TreeFormatVisitor ) return ((TreeFormatVisitor)visitor).visitSubtree(this);
else return visitor.visitChildren(this);
}
}
public final SubtreeContext subtree() throws RecognitionException {
SubtreeContext _localctx = new SubtreeContext(_ctx, getState());
enterRule(_localctx, 0, RULE_subtree);
int _la;
try {
int _alt;
setState(26);
switch ( getInterpreter().adaptivePredict(_input,2,_ctx) ) {
case 1:
enterOuterAlt(_localctx, 1);
{
setState(10); node();
setState(14);
_errHandler.sync(this);
_alt = getInterpreter().adaptivePredict(_input,0,_ctx);
while ( _alt!=2 && _alt!=-1 ) {
if ( _alt==1 ) {
{
{
setState(11); match(NEWLINE);
}
}
}
setState(16);
_errHandler.sync(this);
_alt = getInterpreter().adaptivePredict(_input,0,_ctx);
}
setState(17); child();
}
break;
case 2:
enterOuterAlt(_localctx, 2);
{
setState(19); node();
setState(23);
_errHandler.sync(this);
_la = _input.LA(1);
while (_la==NEWLINE) {
{
{
setState(20); match(NEWLINE);
}
}
setState(25);
_errHandler.sync(this);
_la = _input.LA(1);
}
}
break;
}
}
catch (RecognitionException re) {
_localctx.exception = re;
_errHandler.reportError(this, re);
_errHandler.recover(this, re);
}
finally {
exitRule();
}
return _localctx;
}
public static class ChildContext extends ParserRuleContext {
public TerminalNode DEDENT() { return getToken(TreeFormatParser.DEDENT, 0); }
public TerminalNode NEWLINE() { return getToken(TreeFormatParser.NEWLINE, 0); }
public TerminalNode INDENT() { return getToken(TreeFormatParser.INDENT, 0); }
public SiblingContext sibling() {
return getRuleContext(SiblingContext.class,0);
}
public ChildContext(ParserRuleContext parent, int invokingState) {
super(parent, invokingState);
}
@Override public int getRuleIndex() { return RULE_child; }
@Override
public void enterRule(ParseTreeListener listener) {
if ( listener instanceof TreeFormatListener ) ((TreeFormatListener)listener).enterChild(this);
}
@Override
public void exitRule(ParseTreeListener listener) {
if ( listener instanceof TreeFormatListener ) ((TreeFormatListener)listener).exitChild(this);
}
@Override
public T accept(ParseTreeVisitor visitor) {
if ( visitor instanceof TreeFormatVisitor ) return ((TreeFormatVisitor)visitor).visitChild(this);
else return visitor.visitChildren(this);
}
}
public final ChildContext child() throws RecognitionException {
ChildContext _localctx = new ChildContext(_ctx, getState());
enterRule(_localctx, 2, RULE_child);
try {
enterOuterAlt(_localctx, 1);
{
setState(28); match(NEWLINE);
setState(29); match(INDENT);
setState(30); sibling();
setState(31); match(DEDENT);
}
}
catch (RecognitionException re) {
_localctx.exception = re;
_errHandler.reportError(this, re);
_errHandler.recover(this, re);
}
finally {
exitRule();
}
return _localctx;
}
public static class SiblingContext extends ParserRuleContext {
public List subtree() {
return getRuleContexts(SubtreeContext.class);
}
public SubtreeContext subtree(int i) {
return getRuleContext(SubtreeContext.class,i);
}
public SiblingContext(ParserRuleContext parent, int invokingState) {
super(parent, invokingState);
}
@Override public int getRuleIndex() { return RULE_sibling; }
@Override
public void enterRule(ParseTreeListener listener) {
if ( listener instanceof TreeFormatListener ) ((TreeFormatListener)listener).enterSibling(this);
}
@Override
public void exitRule(ParseTreeListener listener) {
if ( listener instanceof TreeFormatListener ) ((TreeFormatListener)listener).exitSibling(this);
}
@Override
public T accept(ParseTreeVisitor visitor) {
if ( visitor instanceof TreeFormatVisitor ) return ((TreeFormatVisitor)visitor).visitSibling(this);
else return visitor.visitChildren(this);
}
}
public final SiblingContext sibling() throws RecognitionException {
SiblingContext _localctx = new SiblingContext(_ctx, getState());
enterRule(_localctx, 4, RULE_sibling);
int _la;
try {
enterOuterAlt(_localctx, 1);
{
setState(34);
_errHandler.sync(this);
_la = _input.LA(1);
do {
{
{
setState(33); subtree();
}
}
setState(36);
_errHandler.sync(this);
_la = _input.LA(1);
} while ( _la==STRING || _la==MARKLESS_STRING );
}
}
catch (RecognitionException re) {
_localctx.exception = re;
_errHandler.reportError(this, re);
_errHandler.recover(this, re);
}
finally {
exitRule();
}
return _localctx;
}
public static class NodeContext extends ParserRuleContext {
public InformationContext name;
public InformationContext tag;
public List information() {
return getRuleContexts(InformationContext.class);
}
public InformationContext information(int i) {
return getRuleContext(InformationContext.class,i);
}
public TerminalNode COLON() { return getToken(TreeFormatParser.COLON, 0); }
public NodeContext(ParserRuleContext parent, int invokingState) {
super(parent, invokingState);
}
@Override public int getRuleIndex() { return RULE_node; }
@Override
public void enterRule(ParseTreeListener listener) {
if ( listener instanceof TreeFormatListener ) ((TreeFormatListener)listener).enterNode(this);
}
@Override
public void exitRule(ParseTreeListener listener) {
if ( listener instanceof TreeFormatListener ) ((TreeFormatListener)listener).exitNode(this);
}
@Override
public T accept(ParseTreeVisitor visitor) {
if ( visitor instanceof TreeFormatVisitor ) return ((TreeFormatVisitor)visitor).visitNode(this);
else return visitor.visitChildren(this);
}
}
public final NodeContext node() throws RecognitionException {
NodeContext _localctx = new NodeContext(_ctx, getState());
enterRule(_localctx, 6, RULE_node);
try {
enterOuterAlt(_localctx, 1);
{
setState(38); ((NodeContext)_localctx).name = information();
setState(39); match(COLON);
setState(40); ((NodeContext)_localctx).tag = information();
}
}
catch (RecognitionException re) {
_localctx.exception = re;
_errHandler.reportError(this, re);
_errHandler.recover(this, re);
}
finally {
exitRule();
}
return _localctx;
}
public static class InformationContext extends ParserRuleContext {
public TerminalNode STRING() { return getToken(TreeFormatParser.STRING, 0); }
public TerminalNode MARKLESS_STRING() { return getToken(TreeFormatParser.MARKLESS_STRING, 0); }
public InformationContext(ParserRuleContext parent, int invokingState) {
super(parent, invokingState);
}
@Override public int getRuleIndex() { return RULE_information; }
@Override
public void enterRule(ParseTreeListener listener) {
if ( listener instanceof TreeFormatListener ) ((TreeFormatListener)listener).enterInformation(this);
}
@Override
public void exitRule(ParseTreeListener listener) {
if ( listener instanceof TreeFormatListener ) ((TreeFormatListener)listener).exitInformation(this);
}
@Override
public T accept(ParseTreeVisitor visitor) {
if ( visitor instanceof TreeFormatVisitor ) return ((TreeFormatVisitor)visitor).visitInformation(this);
else return visitor.visitChildren(this);
}
}
public final InformationContext information() throws RecognitionException {
InformationContext _localctx = new InformationContext(_ctx, getState());
enterRule(_localctx, 8, RULE_information);
int _la;
try {
enterOuterAlt(_localctx, 1);
{
setState(42);
_la = _input.LA(1);
if ( !(_la==STRING || _la==MARKLESS_STRING) ) {
_errHandler.recoverInline(this);
}
consume();
}
}
catch (RecognitionException re) {
_localctx.exception = re;
_errHandler.reportError(this, re);
_errHandler.recover(this, re);
}
finally {
exitRule();
}
return _localctx;
}
public static final String _serializedATN =
"\3\uacf5\uee8c\u4f5d\u8b0d\u4a45\u78bd\u1b2f\u3378\3\t/\4\2\t\2\4\3\t"+
"\3\4\4\t\4\4\5\t\5\4\6\t\6\3\2\3\2\7\2\17\n\2\f\2\16\2\22\13\2\3\2\3\2"+
"\3\2\3\2\7\2\30\n\2\f\2\16\2\33\13\2\5\2\35\n\2\3\3\3\3\3\3\3\3\3\3\3"+
"\4\6\4%\n\4\r\4\16\4&\3\5\3\5\3\5\3\5\3\6\3\6\3\6\2\7\2\4\6\b\n\2\3\3"+
"\2\4\5-\2\34\3\2\2\2\4\36\3\2\2\2\6$\3\2\2\2\b(\3\2\2\2\n,\3\2\2\2\f\20"+
"\5\b\5\2\r\17\7\6\2\2\16\r\3\2\2\2\17\22\3\2\2\2\20\16\3\2\2\2\20\21\3"+
"\2\2\2\21\23\3\2\2\2\22\20\3\2\2\2\23\24\5\4\3\2\24\35\3\2\2\2\25\31\5"+
"\b\5\2\26\30\7\6\2\2\27\26\3\2\2\2\30\33\3\2\2\2\31\27\3\2\2\2\31\32\3"+
"\2\2\2\32\35\3\2\2\2\33\31\3\2\2\2\34\f\3\2\2\2\34\25\3\2\2\2\35\3\3\2"+
"\2\2\36\37\7\6\2\2\37 \7\b\2\2 !\5\6\4\2!\"\7\t\2\2\"\5\3\2\2\2#%\5\2"+
"\2\2$#\3\2\2\2%&\3\2\2\2&$\3\2\2\2&\'\3\2\2\2\'\7\3\2\2\2()\5\n\6\2)*"+
"\7\3\2\2*+\5\n\6\2+\t\3\2\2\2,-\t\2\2\2-\13\3\2\2\2\6\20\31\34&";
public static final ATN _ATN =
ATNSimulator.deserialize(_serializedATN.toCharArray());
static {
_decisionToDFA = new DFA[_ATN.getNumberOfDecisions()];
for (int i = 0; i < _ATN.getNumberOfDecisions(); i++) {
_decisionToDFA[i] = new DFA(_ATN.getDecisionState(i), i);
}
}
}