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Make visitor reproduce groups #1

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Make visitor reproduce groups #1

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67 changes: 45 additions & 22 deletions src/main/java/at/daho/opencypherexperiments/CypherVisitor.java
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Original file line number Diff line number Diff line change
Expand Up @@ -3,44 +3,67 @@
import at.daho.opencypherexperiments.antlr4.CypherBaseVisitor;
import at.daho.opencypherexperiments.antlr4.CypherParser;

import java.util.ArrayList;

public class CypherVisitor extends CypherBaseVisitor<Object> {
private int clauseNumber = 1;
private int indent = 0;
private ArrayList<String> currentGroup = new ArrayList<>();

@Override
public Object visitOC_Cypher(CypherParser.OC_CypherContext ctx) {
return visit(ctx.oC_Statement());
public Object visitOC_MultiPartQuery(CypherParser.OC_MultiPartQueryContext ctx) {
println("MultiPart [");
indent++;
currentGroup.clear();
Object result = super.visitOC_MultiPartQuery(ctx);
indent--;
println("]");

return result;
}

@Override
public Object visitOC_Statement(CypherParser.OC_StatementContext ctx) {
return visit(ctx.oC_Query());
public Object visitOC_ReadingClause(CypherParser.OC_ReadingClauseContext ctx) {
currentGroup.add("" + (clauseNumber++) + ": " + ctx.getText());
return super.visitOC_ReadingClause(ctx);
}

@Override
public Object visitOC_Query(CypherParser.OC_QueryContext ctx) {
return visit(ctx.oC_RegularQuery());
public Object visitOC_UpdatingClause(CypherParser.OC_UpdatingClauseContext ctx) {
currentGroup.add("" + (clauseNumber++) + ": " + ctx.getText());
return super.visitOC_UpdatingClause(ctx);
}

@Override
public Object visitOC_RegularQuery(CypherParser.OC_RegularQueryContext ctx) {
return visit(ctx.oC_SingleQuery());
public Object visitOC_With(CypherParser.OC_WithContext ctx) {
println("Group [");
indent++;
currentGroup.add("" + (clauseNumber++) + ": " + ctx.getText());
Object result = super.visitOC_With(ctx);
currentGroup.stream().forEachOrdered(this::println);
indent--;
println("]");
currentGroup.clear();
return result;
}

@Override
public Object visitOC_SingleQuery(CypherParser.OC_SingleQueryContext ctx) {
return visit(ctx.oC_MultiPartQuery());
public Object visitOC_Return(CypherParser.OC_ReturnContext ctx) {
println("Group [");
indent++;
currentGroup.add("" + (clauseNumber++) + ": " + ctx.getText());
Object result = super.visitOC_Return(ctx);
currentGroup.stream().forEachOrdered(this::println);
indent--;
println("]");
return result;
}

@Override
public Object visitOC_MultiPartQuery(CypherParser.OC_MultiPartQueryContext ctx) {
System.out.println("Enter visitOC_MultiPartQuery");
System.out.println("Whole context: " + ctx.getText());
System.out.println("OC_ReadingClause:");
ctx.oC_ReadingClause().forEach(c -> System.out.println("\t" + c.getText()));
System.out.println("OC_UpdatingClause:");
ctx.oC_UpdatingClause().forEach(c -> System.out.println("\t" + c.getText()));
System.out.println("To which OC_ReadingClause does this OC_UpdatingClause belong?");
System.out.println("Leave visitOC_MultiPartQuery");

return null;
private void println(String line) {
System.out.println(getIndent() + line);
}

private String getIndent() {
return new String(new char[indent]).replace("\0", " ");
}
}