org.snapscript.tree.construct.ConstructSet Maven / Gradle / Ivy
package org.snapscript.tree.construct;
import java.util.LinkedHashSet;
import java.util.Set;
import org.snapscript.core.Compilation;
import org.snapscript.core.Context;
import org.snapscript.core.Evaluation;
import org.snapscript.core.constraint.Constraint;
import org.snapscript.core.convert.proxy.ProxyWrapper;
import org.snapscript.core.error.ErrorHandler;
import org.snapscript.core.module.Module;
import org.snapscript.core.module.Path;
import org.snapscript.core.scope.Scope;
import org.snapscript.core.trace.Trace;
import org.snapscript.core.trace.TraceEvaluation;
import org.snapscript.core.trace.TraceInterceptor;
import org.snapscript.core.variable.Value;
import org.snapscript.parse.StringToken;
import org.snapscript.tree.ArgumentList;
public class ConstructSet implements Compilation {
private final Evaluation construct;
public ConstructSet(StringToken token) {
this(null, token);
}
public ConstructSet(ArgumentList arguments) {
this(arguments, null);
}
public ConstructSet(ArgumentList arguments, StringToken token) {
this.construct = new CompileResult(arguments);
}
@Override
public Evaluation compile(Module module, Path path, int line) throws Exception {
Context context = module.getContext();
TraceInterceptor interceptor = context.getInterceptor();
Trace trace = Trace.getConstruct(module, path, line);
return new TraceEvaluation(interceptor, construct, trace);
}
private static class CompileResult extends Evaluation {
private final ArgumentList arguments;
public CompileResult(ArgumentList arguments) {
this.arguments = arguments;
}
@Override
public void define(Scope scope) throws Exception {
if(arguments != null) {
arguments.define(scope);
}
}
@Override
public Constraint compile(Scope scope, Constraint left) throws Exception {
if(arguments != null) {
arguments.compile(scope);
}
return Constraint.SET;
}
@Override
public Value evaluate(Scope scope, Object left) throws Exception {
Set result = new LinkedHashSet();
if(arguments != null) {
Object[] array = arguments.create(scope);
Module module = scope.getModule();
Context context = module.getContext();
ProxyWrapper wrapper = context.getWrapper();
for(Object value : array) {
Object proxy = wrapper.toProxy(value);
result.add(proxy);
}
}
return Value.getTransient(result);
}
}
}