Examples of com.google.gwt.dev.js.ast.JsBinaryOperation

com.google.gwt.dev.js.ast.JsBinaryOperation
Represents a JavaScript binary operation.

     * (Requires a temporary variable.)
     */
    private JsExpression recordAfter(JsExpression x, SourceInfo locationToRecord) {
      // ($tmp = x, $locations[stackIndex] = "{fileName}:" + "{lineNumber}", $tmp)
      SourceInfo info = x.getSourceInfo();
      JsExpression setTmp = new JsBinaryOperation(info, JsBinaryOperator.ASG, tmp.makeRef(info), x);
      return new JsBinaryOperation(info, JsBinaryOperator.COMMA,
          new JsBinaryOperation(info, JsBinaryOperator.COMMA, setTmp,
              assignLocation(locationToRecord)),
          tmp.makeRef(info));
    }

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      JsExpression location = new JsStringLiteral(info, String.valueOf(info.getStartLine()));
      if (recordFileNames) {
        // 'fileName:' + lineNumber
        JsStringLiteral stringLit = new JsStringLiteral(info, baseName(info.getFileName()) + ":");
        location = new JsBinaryOperation(info, JsBinaryOperator.ADD, stringLit, location);
      }


      JsArrayAccess access = new JsArrayAccess(info, lineNumbers.makeRef(info),
          stackIndexRef(info));
      return new JsBinaryOperation(info, JsBinaryOperator.ASG, access, location);
    }

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    // Handle String.
    if (!(expr.getExpression() instanceof JsBinaryOperation)) {
      return null;
    }
    JsBinaryOperation binExpr = (JsBinaryOperation) expr.getExpression();
    if (binExpr.getOperator() != JsBinaryOperator.ASG) {
      return null;
    }
    if (!(binExpr.getArg1() instanceof JsNameRef)) {
      return null;
    }
    JsNameRef lhs = (JsNameRef) binExpr.getArg1();
    JsName underBar = jsprogram.getScope().findExistingName("_");
    assert underBar != null;
    if (lhs.getName() != underBar) {
      return null;
    }
    if (!(binExpr.getArg2() instanceof JsNameRef)) {
      return null;
    }


    JsNameRef rhsRef = (JsNameRef) binExpr.getArg2();
    if (!(rhsRef.getQualifier() instanceof JsNameRef)) {
      return null;
    }
    if (!((JsNameRef) rhsRef.getQualifier()).getShortIdent().equals("String")) {
      return null;

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   */
  private class RewriteDeclsAndRefs extends JsModVisitor {
    @Override
    public void endVisit(JsFunction x, JsContext ctx) {
      if (namesToPredefine.contains(x.getName())) {
        JsBinaryOperation asg =
            new JsBinaryOperation(x.getSourceInfo(), JsBinaryOperator.ASG, makeRefViaJslink(x
                .getName(), x.getSourceInfo()), x);
        x.setName(null);
        ctx.replaceMe(asg);
      }
    }

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        JsVar var = varsIterator.next();
        if (namesToPredefine.contains(var.getName())) {
          // The var was predefined
          if (var.getInitExpr() != null) {
            // If it has an initializer, add an assignment statement
            JsBinaryOperation asg =
                new JsBinaryOperation(var.getSourceInfo(), JsBinaryOperator.ASG, makeRefViaJslink(
                    var.getName(), var.getSourceInfo()), var.getInitExpr());
            ctx.insertBefore(asg.makeStmt());
            currentVar = null;
          }
        } else {
          // The var was not predefined; add it to a var list
          if (currentVar == null) {

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      } else if (myOp == JsBinaryOperator.NEQ && x.getLhs().getType() instanceof JReferenceType
          && x.getRhs().getType() instanceof JReferenceType) {
        myOp = JsBinaryOperator.REF_NEQ;
      }


      push(new JsBinaryOperation(x.getSourceInfo(), myOp, lhs, rhs));
    }

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          push(null);
          return;
        }
      }


      JsBinaryOperation binOp =
          new JsBinaryOperation(x.getSourceInfo(), JsBinaryOperator.ASG, localRef, initializer);


      push(binOp.makeStmt());
    }

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      return tmpName;
    }


    private JsExpression dispatchAsHas(JMethodCall x, String has, JsExpression qualExpr) {
      JsExpression result;JsNameRef property = new JsNameRef(x.getSourceInfo(), has);
      result = new JsBinaryOperation(x.getSourceInfo(), JsBinaryOperator.INOP,
          property, qualExpr);
      return result;
    }

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        methodSignatures.add(sig);
      }
    }


    private JsExpression createAssignment(JsExpression lhs, JsExpression rhs) {
      return new JsBinaryOperation(lhs.getSourceInfo(), JsBinaryOperator.ASG, lhs, rhs);
    }

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      if (lhs == null) {
        return rhs;
      } else if (rhs == null) {
        return lhs;
      }
      return new JsBinaryOperation(lhs.getSourceInfo(), JsBinaryOperator.COMMA, lhs, rhs);
    }

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