Package com.odiago.flumebase.parser

Examples of com.odiago.flumebase.parser.ConstExpr

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      List<Expr> fnArgs = e.getArgExpressions();
      if (fnArgs.size() == 1 && fnArgs.get(0) instanceof AllFieldsExpr) {
        // This matches COUNT(*).
        LOG.debug("Replaced count(*) in SELECT statement.");
        e.setArgExpressions(Collections.singletonList((Expr)
            new ConstExpr(Type.getPrimitive(Type.TypeName.INT), Integer.valueOf(1))));
      }
    }
  }
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public class TestTypeChecker {

  @Test
  public void testBasicBinop() throws VisitException {
    Expr binopExpr = new BinExpr(
      new ConstExpr(Type.getPrimitive(Type.TypeName.INT), Integer.valueOf(2)),
      BinOp.Add, new ConstExpr(Type.getPrimitive(Type.TypeName.INT), Integer.valueOf(3)));
    TypeChecker tc = new TypeChecker(new HashSymbolTable());
    binopExpr.accept(tc);
  }
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  }

  @Test
  public void testNestedBinop() throws VisitException {
    Expr binopExpr = new BinExpr(
      new ConstExpr(Type.getPrimitive(Type.TypeName.INT), Integer.valueOf(2)),
      BinOp.Add,
      new BinExpr(
        new ConstExpr(Type.getPrimitive(Type.TypeName.INT), Integer.valueOf(3)),
        BinOp.Add,
        new ConstExpr(Type.getPrimitive(Type.TypeName.INT), Integer.valueOf(4))));

    TypeChecker tc = new TypeChecker(new HashSymbolTable());
    binopExpr.accept(tc);
  }
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  @Test(expectedExceptions = VisitException.class)
  public void testBasicBinopFail() throws VisitException {
    // can't add INT and TIMESTAMP.
    Expr binopExpr = new BinExpr(
      new ConstExpr(Type.getPrimitive(Type.TypeName.INT), Integer.valueOf(2)),
      BinOp.Add, new ConstExpr(Type.getPrimitive(Type.TypeName.TIMESTAMP), Integer.valueOf(3)));
    TypeChecker tc = new TypeChecker(new HashSymbolTable());
    binopExpr.accept(tc);
  }
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  @Test(expectedExceptions = VisitException.class)
  public void testNestedBinopFail() throws VisitException {
    // can't add INT and TIMESTAMP in a subexpr.
    Expr binopExpr = new BinExpr(
      new ConstExpr(Type.getPrimitive(Type.TypeName.INT), Integer.valueOf(2)),
      BinOp.Add,
      new BinExpr(
        new ConstExpr(Type.getPrimitive(Type.TypeName.INT), Integer.valueOf(3)),
        BinOp.Add,
        new ConstExpr(Type.getPrimitive(Type.TypeName.TIMESTAMP), Integer.valueOf(4))));

    TypeChecker tc = new TypeChecker(new HashSymbolTable());
    binopExpr.accept(tc);
  }
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  @Test
  public void testPromotion1() throws VisitException {
    // Test that INT can promote to BIGINT.
    Expr binopExpr = new BinExpr(
      new ConstExpr(Type.getPrimitive(Type.TypeName.INT), Integer.valueOf(2)),
      BinOp.Add, new ConstExpr(Type.getPrimitive(Type.TypeName.BIGINT), Integer.valueOf(3)));
    TypeChecker tc = new TypeChecker(new HashSymbolTable());
    binopExpr.accept(tc);
  }
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  @Test
  public void testPromotion2() throws VisitException {
    // Test that INT can promote to BIGINT on the lhs.
    Expr binopExpr = new BinExpr(
      new ConstExpr(Type.getPrimitive(Type.TypeName.BIGINT), Integer.valueOf(2)),
      BinOp.Add, new ConstExpr(Type.getPrimitive(Type.TypeName.INT), Integer.valueOf(3)));
    TypeChecker tc = new TypeChecker(new HashSymbolTable());
    binopExpr.accept(tc);
  }
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    SymbolTable symbols = new HashSymbolTable();
    symbols.addSymbol(new AssignedSymbol("x", Type.getPrimitive(Type.TypeName.INT), "x",
        IdentifierExpr.AccessType.FIELD));

    Expr binopExpr = new BinExpr(
      new ConstExpr(Type.getPrimitive(Type.TypeName.INT), Integer.valueOf(2)),
      BinOp.Add, new IdentifierExpr("x"));
    TypeChecker tc = new TypeChecker(symbols);
    binopExpr.accept(tc);
  }
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    SymbolTable symbols = new HashSymbolTable();
    symbols.addSymbol(new AssignedSymbol("x", Type.getPrimitive(Type.TypeName.INT), "x",
        IdentifierExpr.AccessType.FIELD));

    Expr binopExpr = new BinExpr(
      new ConstExpr(Type.getPrimitive(Type.TypeName.BIGINT), Integer.valueOf(2)),
      BinOp.Add, new IdentifierExpr("x"));
    TypeChecker tc = new TypeChecker(symbols);
    binopExpr.accept(tc);
  }
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    SymbolTable symbols = new HashSymbolTable();
    symbols.addSymbol(new AssignedSymbol("x", Type.getPrimitive(Type.TypeName.BIGINT), "x",
        IdentifierExpr.AccessType.FIELD));

    Expr binopExpr = new BinExpr(
      new ConstExpr(Type.getPrimitive(Type.TypeName.INT), Integer.valueOf(2)),
      BinOp.Add, new IdentifierExpr("x"));
    TypeChecker tc = new TypeChecker(symbols);
    binopExpr.accept(tc);
  }
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Related Classes of com.odiago.flumebase.parser.ConstExpr

  • com.odiago.flumebase.lang.CountStarVisitor
  • com.odiago.flumebase.lang.TestTypeChecker
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