package no.uio.ifi.refaktor.analyze.analyzers;

import java.util.LinkedList;
import java.util.List;

import no.uio.ifi.refaktor.analyze.ExtractAndMoveMethodCandidate;
import no.uio.ifi.refaktor.analyze.exceptions.RefaktorAnalyzerException;
import no.uio.ifi.refaktor.debugging.RefaktorDebug;

import org.eclipse.jdt.core.ICompilationUnit;
import org.eclipse.jdt.core.IType;
import org.eclipse.jdt.core.JavaModelException;

/**
 * Responsible for analyzing all methods in a compilation unit for
 * candidates to the Extract and Move Method refactoring.
 */
public class CompilationUnitWideExtractAndMoveMethodAnalyzer implements AggregationAnalyzer<ExtractAndMoveMethodCandidate> {

	private final ICompilationUnit compilationUnit;
	private final List<ExtractAndMoveMethodCandidate> results;

	public CompilationUnitWideExtractAndMoveMethodAnalyzer(ICompilationUnit compilationUnit) {
		this.compilationUnit = compilationUnit;
		results = new LinkedList<ExtractAndMoveMethodCandidate>();
	}

	@Override
	public List<ExtractAndMoveMethodCandidate> getResults() {
		return results;
	}

	@Override
	public void analyze() throws RefaktorAnalyzerException {
		try {
			analyzeMethodsInCompilationUnit();
		} catch (JavaModelException e) {
			RefaktorDebug.log(e);
		}
	}

	private void analyzeMethodsInCompilationUnit() throws JavaModelException {
		for (IType type: compilationUnit.getAllTypes())
			analyzeMethodsInType(type);
	}

	private void analyzeMethodsInType(IType type) throws JavaModelException {
		TypeWideExtractAndMoveMethodAnalyzer analyzer = new TypeWideExtractAndMoveMethodAnalyzer(type);
		analyzer.analyze();
		results.addAll(analyzer.getResults());
	}
}