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persistence.antlr.ANTLRTokdefParser Maven / Gradle / Ivy
// $ANTLR : "tokdef.g" -> "ANTLRTokdefParser.java"$
package persistence.antlr;
import persistence.antlr.TokenBuffer;
import persistence.antlr.TokenStreamException;
import persistence.antlr.TokenStreamIOException;
import persistence.antlr.ANTLRException;
import persistence.antlr.LLkParser;
import persistence.antlr.Token;
import persistence.antlr.TokenStream;
import persistence.antlr.RecognitionException;
import persistence.antlr.NoViableAltException;
import persistence.antlr.MismatchedTokenException;
import persistence.antlr.SemanticException;
import persistence.antlr.ParserSharedInputState;
import persistence.antlr.collections.impl.BitSet;
/** Simple lexer/parser for reading token definition files
in support of the import/export vocab option for grammars.
*/
public class ANTLRTokdefParser extends persistence.antlr.LLkParser implements ANTLRTokdefParserTokenTypes
{
// This chunk of error reporting code provided by Brian Smith
private persistence.antlr.Tool antlrTool;
/** In order to make it so existing subclasses don't break, we won't require
* that the persistence.antlr.Tool instance be passed as a constructor element. Instead,
* the persistence.antlr.Tool instance should register itself via {@link #initTool(antlr.Tool)}
* @throws IllegalStateException if a tool has already been registered
* @since 2.7.2
*/
public void setTool(persistence.antlr.Tool tool) {
if (antlrTool == null) {
antlrTool = tool;
}
else {
throw new IllegalStateException("persistence.antlr.Tool already registered");
}
}
/** @since 2.7.2 */
protected persistence.antlr.Tool getTool() {
return antlrTool;
}
/** Delegates the error message to the tool if any was registered via
* {@link #initTool(persistence.antlr.Tool)}
* @since 2.7.2
*/
public void reportError(String s) {
if (getTool() != null) {
getTool().error(s, getFilename(), -1, -1);
}
else {
super.reportError(s);
}
}
/** Delegates the error message to the tool if any was registered via
* {@link #initTool(persistence.antlr.Tool)}
* @since 2.7.2
*/
public void reportError(RecognitionException e) {
if (getTool() != null) {
getTool().error(e.getErrorMessage(), e.getFilename(), e.getLine(), e.getColumn());
}
else {
super.reportError(e);
}
}
/** Delegates the warning message to the tool if any was registered via
* {@link #initTool(persistence.antlr.Tool)}
* @since 2.7.2
*/
public void reportWarning(String s) {
if (getTool() != null) {
getTool().warning(s, getFilename(), -1, -1);
}
else {
super.reportWarning(s);
}
}
protected ANTLRTokdefParser(TokenBuffer tokenBuf, int k) {
super(tokenBuf,k);
tokenNames = _tokenNames;
}
public ANTLRTokdefParser(TokenBuffer tokenBuf) {
this(tokenBuf,3);
}
protected ANTLRTokdefParser(TokenStream lexer, int k) {
super(lexer,k);
tokenNames = _tokenNames;
}
public ANTLRTokdefParser(TokenStream lexer) {
this(lexer,3);
}
public ANTLRTokdefParser(ParserSharedInputState state) {
super(state,3);
tokenNames = _tokenNames;
}
public final void file(
ImportVocabTokenManager tm
) throws RecognitionException, TokenStreamException {
Token name = null;
try { // for error handling
name = LT(1);
match(ID);
{
_loop225:
do {
if ((LA(1)==ID||LA(1)==STRING)) {
line(tm);
}
else {
break _loop225;
}
} while (true);
}
}
catch (RecognitionException ex) {
reportError(ex);
consume();
consumeUntil(_tokenSet_0);
}
}
public final void line(
ImportVocabTokenManager tm
) throws RecognitionException, TokenStreamException {
Token s1 = null;
Token lab = null;
Token s2 = null;
Token id = null;
Token para = null;
Token id2 = null;
Token i = null;
Token t=null; Token s=null;
try { // for error handling
{
if ((LA(1)==STRING)) {
s1 = LT(1);
match(STRING);
s = s1;
}
else if ((LA(1)==ID) && (LA(2)==ASSIGN) && (LA(3)==STRING)) {
lab = LT(1);
match(ID);
t = lab;
match(ASSIGN);
s2 = LT(1);
match(STRING);
s = s2;
}
else if ((LA(1)==ID) && (LA(2)==LPAREN)) {
id = LT(1);
match(ID);
t=id;
match(LPAREN);
para = LT(1);
match(STRING);
match(RPAREN);
}
else if ((LA(1)==ID) && (LA(2)==ASSIGN) && (LA(3)==INT)) {
id2 = LT(1);
match(ID);
t=id2;
}
else {
throw new NoViableAltException(LT(1), getFilename());
}
}
match(ASSIGN);
i = LT(1);
match(INT);
Integer value = Integer.valueOf(i.getText());
// if literal found, define as a string literal
if ( s!=null ) {
tm.define(s.getText(), value.intValue());
// if label, then label the string and map label to token symbol also
if ( t!=null ) {
StringLiteralSymbol sl =
(StringLiteralSymbol) tm.getTokenSymbol(s.getText());
sl.setLabel(t.getText());
tm.mapToTokenSymbol(t.getText(), sl);
}
}
// define token (not a literal)
else if ( t!=null ) {
tm.define(t.getText(), value.intValue());
if ( para!=null ) {
TokenSymbol ts = tm.getTokenSymbol(t.getText());
ts.setParaphrase(
para.getText()
);
}
}
}
catch (RecognitionException ex) {
reportError(ex);
consume();
consumeUntil(_tokenSet_1);
}
}
public static final String[] _tokenNames = {
"<0>",
"EOF",
"<2>",
"NULL_TREE_LOOKAHEAD",
"ID",
"STRING",
"ASSIGN",
"LPAREN",
"RPAREN",
"INT",
"WS",
"SL_COMMENT",
"ML_COMMENT",
"ESC",
"DIGIT",
"XDIGIT"
};
private static final long[] mk_tokenSet_0() {
long[] data = { 2L, 0L};
return data;
}
public static final BitSet _tokenSet_0 = new BitSet(mk_tokenSet_0());
private static final long[] mk_tokenSet_1() {
long[] data = { 50L, 0L};
return data;
}
public static final BitSet _tokenSet_1 = new BitSet(mk_tokenSet_1());
}
