Package dev.frostlake.parser

Class SyntaxErrorListener

java.lang.Object

org.antlr.v4.runtime.BaseErrorListener

dev.frostlake.parser.SyntaxErrorListener

All Implemented Interfaces:

org.antlr.v4.runtime.ANTLRErrorListener

public class SyntaxErrorListener
extends org.antlr.v4.runtime.BaseErrorListener

Custom ANTLR error listener that collects syntax errors and throws them in live Snowflake's wording (live-verified): every error renders on its own line under the one compilation-error prefix — a parser error as syntax error line L at position P unexpected 'TOK'. (token text verbatim, '<EOF>' at end of input), a lexer error (an unterminated literal or quoted identifier — the lexer consumed to end of input) as parse error line L at position P near '<EOF>'. positioned at the END of the input. The raw ANTLR diagnostics ("mismatched input ... expecting ...") stay available through SqlSyntaxException.getSyntaxErrors() and the logs.

Constructor Summary

Constructors

Constructor	Description
SyntaxErrorListener(String sql)
SyntaxErrorListener(String sql, boolean quiet)

Method Summary

Modifier and Type	Method	Description
boolean	firstErrorIsMissingTerminator()	Whether the FIRST error was a block's statement ending without its semicolon: the engine read that statement whole, so no construct it does not know can explain the fault, and a CREATE may refuse the body as the account does.
List<String>	getErrors()
boolean	hasErrors()
void	statementParse()	Mark this listener as watching a whole STATEMENT, which enables the leading-token rule.
void	syntaxError(org.antlr.v4.runtime.Recognizer<?,?> recognizer, Object offendingSymbol, int line, int charPositionInLine, String msg, org.antlr.v4.runtime.RecognitionException e)
void	throwIfErrors()

Methods inherited from class org.antlr.v4.runtime.BaseErrorListener

reportAmbiguity, reportAttemptingFullContext, reportContextSensitivity

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

SyntaxErrorListener

public SyntaxErrorListener(String sql)

SyntaxErrorListener

public SyntaxErrorListener(String sql,
 boolean quiet)

Method Details

syntaxError

public void syntaxError(org.antlr.v4.runtime.Recognizer<?,?> recognizer,
 Object offendingSymbol,
 int line,
 int charPositionInLine,
 String msg,
 org.antlr.v4.runtime.RecognitionException e)

Specified by:

syntaxError in interface org.antlr.v4.runtime.ANTLRErrorListener

Overrides:

syntaxError in class org.antlr.v4.runtime.BaseErrorListener

firstErrorIsMissingTerminator

public boolean firstErrorIsMissingTerminator()

Whether the FIRST error was a block's statement ending without its semicolon: the engine read that statement whole, so no construct it does not know can explain the fault, and a CREATE may refuse the body as the account does.

hasErrors

public boolean hasErrors()

getErrors

public List<String> getErrors()

statementParse

public void statementParse()

Mark this listener as watching a whole STATEMENT, which enables the leading-token rule.

throwIfErrors

public void throwIfErrors()