Examples of com.google.gwt.dev.jjs.ast.JExpression

com.google.gwt.dev.jjs.ast.JExpression
Base class for all Java expressions.

       * Note that we always prefer a JDT-computed constant value to the actual
       * written expression. (Let's hope JDT is always right.) This means we
       * don't have to write processExpression methods for the numerous JDT
       * literal nodes because they ALWAYS have a constant value.
       */
      JExpression result = null;
      if (x != null && x.constant != null
          && x.constant != Constant.NotAConstant) {
        result = (JExpression) dispatch("processConstant", x.constant);
      }

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     * Process an Statement type node reflectively; must return a JStatement.
     */
    protected JStatement dispProcessStatement(Statement x) {
      JStatement stmt;
      if (x instanceof Expression) {
        JExpression expr = dispProcessExpression((Expression) x);
        if (expr == null) {
          return null;
        }
        stmt = expr.makeStatement();
      } else {
        stmt = (JStatement) dispatch("processStatement", x);
      }
      return stmt;
    }

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        // optional this or super constructor call
        if (superOrThisCall != null) {
          block.addStmt(superOrThisCall.makeStatement());
        }


        JExpression thisRef = createThisRef(info, enclosingType);


        /*
         * Call the synthetic instance initializer method, unless we have an
         * explicit this constructor call, in which case the callee will.
         */

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    }


    JExpression processExpression(ConditionalExpression x) {
      SourceInfo info = makeSourceInfo(x);
      JType type = (JType) typeMap.get(x.resolvedType);
      JExpression ifTest = dispProcessExpression(x.condition);
      JExpression thenExpr = dispProcessExpression(x.valueIfTrue);
      JExpression elseExpr = dispProcessExpression(x.valueIfFalse);
      JConditional conditional = new JConditional(info, type, ifTest, thenExpr,
          elseExpr);
      return conditional;
    }

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        }
      } else {
        field = (JField) typeMap.get(fieldBinding);
      }
      SourceInfo info = makeSourceInfo(x);
      JExpression instance = dispProcessExpression(x.receiver);
      JExpression fieldRef = new JFieldRef(info, instance, field, currentClass);


      if (x.genericCast != null) {
        JType castType = (JType) typeMap.get(x.genericCast);
        /*
         * Note, this may result in an invalid AST due to an LHS cast operation.

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      return fieldRef;
    }


    JExpression processExpression(InstanceOfExpression x) {
      SourceInfo info = makeSourceInfo(x);
      JExpression expr = dispProcessExpression(x.expression);
      JReferenceType testType = (JReferenceType) typeMap.get(x.type.resolvedType);
      return new JInstanceOf(info, testType, expr);
    }

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    JExpression processExpression(MessageSend x) {
      SourceInfo info = makeSourceInfo(x);
      JMethod method = (JMethod) typeMap.get(x.binding);


      JExpression qualifier;
      if (x.receiver instanceof ThisReference) {
        if (method.isStatic()) {
          // don't bother qualifying it, it's a no-op
          qualifier = null;
        } else if (x.receiver instanceof QualifiedThisReference) {

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      MethodBinding b = x.binding;
      JMethod ctor = (JMethod) typeMap.get(b);
      JClassType enclosingType = (JClassType) ctor.getEnclosingType();
      JNewInstance newInstance = new JNewInstance(info, enclosingType);
      JMethodCall call = new JMethodCall(info, newInstance, ctor);
      JExpression qualifier = dispProcessExpression(x.enclosingInstance);
      List<JExpression> qualList = new ArrayList<JExpression>();
      qualList.add(qualifier);


      /*
       * Really weird: Sometimes an allocation expression needs both its
       * explicit qualifier AND its implicit enclosing class! We add this second
       * because the explicit qualifier takes precedence.
       */
      if (!currentMethod.isStatic()) {
        JExpression implicitOuter = program.getExprThisRef(info,
            (JClassType) currentClass);
        qualList.add(implicitOuter);
      }


      // Plain old regular arguments

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      if (!(node instanceof JVariable)) {
        return null;
      }
      JVariable variable = (JVariable) node;


      JExpression curRef = createVariableRef(info, variable, binding);
      if (x.genericCast != null) {
        JType castType = (JType) typeMap.get(x.genericCast);
        curRef = maybeCast(castType, curRef);
      }

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       * Wackiness: if a field happens to have synthetic accessors (only fields
       * can have them, apparently), this is a ref to a field in an enclosing
       * instance. CreateThisRef should compute a "this" access of the
       * appropriate type, unless the field is static.
       */
      JExpression result = null;
      if (x.syntheticAccessors != null) {
        JField field = (JField) variable;
        if (!field.isStatic()) {
          JExpression instance = createThisRef(info, field.getEnclosingType());
          result = new JFieldRef(info, instance, field, currentClass);
        }
      }
      if (result == null) {
        result = createVariableRef(info, variable, binding);

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