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hibernate-orm
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HHH-3751 : Antlr tree parser tracing 

git-svn-id: https://svn.jboss.org/repos/hibernate/core/branches/Branch_3_3@15870 1b8cb986-b30d-0410-93ca-fae66ebed9b2
This commit is contained in:
Steve Ebersole 2009-02-03 20:45:03 +00:00
parent c7dcdc19a0
commit 9bfb17b497
2 changed files with 49 additions and 0 deletions
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1
core/pom.xml
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@ -77,6 +77,7 @@
<artifactId>antlr-maven-plugin</artifactId>
<version>${antlrPluginVersion}</version>
<configuration>
<traceTreeParser>true</traceTreeParser>
<grammars>hql.g,hql-sql.g,sql-gen.g</grammars>
</configuration>
<executions>

48
core/src/main/java/org/hibernate/hql/ast/SqlGenerator.java
View File

@ -32,15 +32,21 @@ import java.util.Arrays;
import antlr.RecognitionException;
import antlr.collections.AST;
import org.hibernate.QueryException;
import org.hibernate.util.StringHelper;
import org.hibernate.param.ParameterSpecification;
import org.hibernate.dialect.function.SQLFunction;
import org.hibernate.engine.SessionFactoryImplementor;
import org.hibernate.hql.antlr.SqlGeneratorBase;
import org.hibernate.hql.antlr.SqlTokenTypes;
import org.hibernate.hql.ast.tree.MethodNode;
import org.hibernate.hql.ast.tree.FromElement;
import org.hibernate.hql.ast.tree.Node;
import org.hibernate.hql.ast.tree.ParameterNode;
import org.hibernate.hql.ast.tree.ParameterContainer;
import org.hibernate.hql.ast.util.ASTPrinter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Generates SQL by overriding callback methods in the base class, which does
@ -50,6 +56,9 @@ import org.hibernate.hql.ast.tree.ParameterContainer;
* @author Steve Ebersole
*/
public class SqlGenerator extends SqlGeneratorBase implements ErrorReporter {
private static final Logger log = LoggerFactory.getLogger( SqlGenerator.class );
private static final ASTPrinter printer = new ASTPrinter( SqlTokenTypes.class, true );
/**
* Handles parser errors.
*/
@ -74,6 +83,45 @@ public class SqlGenerator extends SqlGeneratorBase implements ErrorReporter {
return collectedParameters;
}
public ASTPrinter getPrinter() {
return printer;
}
// handle trace logging ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
private int traceDepth = 0;
public void traceIn(String ruleName, AST tree) {
if ( inputState.guessing > 0 ) {
return;
}
String prefix = StringHelper.repeat( '-', (traceDepth++ * 2) ) + "-> ";
String traceText = ruleName + " (" + buildTraceNodeName(tree) + ")";
trace( prefix + traceText );
}
private String buildTraceNodeName(AST tree) {
return tree == null
? "???"
: tree.getText() + " [" + printer.getTokenTypeName( tree.getType() ) + "]";
}
public void traceOut(String ruleName, AST tree) {
if ( inputState.guessing > 0 ) {
return;
}
String prefix = "<-" + StringHelper.repeat( '-', (--traceDepth * 2) ) + " ";
trace( prefix + ruleName );
}
private void trace(String msg) {
log.trace( msg );
}
// semantic action processing ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
protected void out(String s) {
writer.clause( s );
}