org.snapscript.tree.DeclarationStatement Maven / Gradle / Ivy

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package org.snapscript.tree;

import org.snapscript.core.Compilation;
import org.snapscript.core.Context;
import org.snapscript.core.ModifierType;
import org.snapscript.core.Module;
import org.snapscript.core.Path;
import org.snapscript.core.Result;
import org.snapscript.core.ResultType;
import org.snapscript.core.Scope;
import org.snapscript.core.Statement;
import org.snapscript.core.error.ErrorHandler;
import org.snapscript.core.trace.Trace;
import org.snapscript.core.trace.TraceInterceptor;
import org.snapscript.core.trace.TraceStatement;
import org.snapscript.core.trace.TraceType;

public class DeclarationStatement implements Compilation {
   
   private final Statement declaration;   
   
   public DeclarationStatement(Modifier modifier, Declaration... declarations) {
      this.declaration = new CompileResult(modifier, declarations);     
   }
   
   @Override
   public Statement compile(Module module, Path path, int line) throws Exception {
      Context context = module.getContext();
      ErrorHandler handler = context.getHandler();
      TraceInterceptor interceptor = context.getInterceptor();
      Trace trace = TraceType.getNormal(module, path, line);
      
      return new TraceStatement(interceptor, handler, declaration, trace);
   }
   
   private static class CompileResult extends Statement {

      private final Declaration[] declarations;
      private final Modifier modifier;
      
      public CompileResult(Modifier modifier, Declaration... declarations) {
         this.declarations = declarations;
         this.modifier = modifier;
      }  
      
      @Override
      public Result compile(Scope scope) throws Exception {
         return ResultType.getDeclare();
      }
      
      @Override
      public Result execute(Scope scope) throws Exception {
         ModifierType type = modifier.getType();
         
         for(Declaration declaration : declarations) {
            declaration.create(scope, type.mask); 
         }
         return ResultType.getNormal();
      }
   }
}