Java Code Examples for com.google.javascript.rhino.Token#INC

The following examples show how to use com.google.javascript.rhino.Token#INC . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: Cardumen_0014_t.java    From coming with MIT License 6 votes vote down vote up 
static boolean nodeTypeMayHaveSideEffects(Node n, AbstractCompiler compiler) {
  if (isAssignmentOp(n)) {
    return true;
  }

  switch(n.getType()) {
    case Token.DELPROP:
    case Token.DEC:
    case Token.INC:
    case Token.THROW:
      return true;
    case Token.CALL:
      return NodeUtil.functionCallHasSideEffects(n, compiler);
    case Token.NEW:
      return NodeUtil.constructorCallHasSideEffects(n, compiler);
    case Token.NAME:
      // A variable definition.
      return n.hasChildren();
    default:
      return false;
  }
}
Example 2
Source File: Cardumen_0087_s.java    From coming with MIT License 6 votes vote down vote up 
static boolean nodeTypeMayHaveSideEffects(Node n, AbstractCompiler compiler) {
  if (isAssignmentOp(n)) {
    return true;
  }

  switch(n.getType()) {
    case Token.DELPROP:
    case Token.DEC:
    case Token.INC:
    case Token.THROW:
      return true;
    case Token.CALL:
      return NodeUtil.functionCallHasSideEffects(n, compiler);
    case Token.NEW:
      return NodeUtil.constructorCallHasSideEffects(n, compiler);
    case Token.NAME:
      // A variable definition.
      return n.hasChildren();
    default:
      return false;
  }
}
Example 3
Source File: Closure_14_ControlFlowAnalysis_s.java    From coming with MIT License 6 votes vote down vote up 
/**
 * Determines if the subtree might throw an exception.
 */
public static boolean mayThrowException(Node n) {
  switch (n.getType()) {
    case Token.CALL:
    case Token.GETPROP:
    case Token.GETELEM:
    case Token.THROW:
    case Token.NEW:
    case Token.ASSIGN:
    case Token.INC:
    case Token.DEC:
    case Token.INSTANCEOF:
      return true;
    case Token.FUNCTION:
      return false;
  }
  for (Node c = n.getFirstChild(); c != null; c = c.getNext()) {
    if (!ControlFlowGraph.isEnteringNewCfgNode(c) && mayThrowException(c)) {
      return true;
    }
  }
  return false;
}
Example 4
Source File: jKali_003_s.java    From coming with MIT License 6 votes vote down vote up 
static boolean nodeTypeMayHaveSideEffects(Node n, AbstractCompiler compiler) {
  if (isAssignmentOp(n)) {
    return true;
  }

  switch(n.getType()) {
    case Token.DELPROP:
    case Token.DEC:
    case Token.INC:
    case Token.THROW:
      return true;
    case Token.CALL:
      return NodeUtil.functionCallHasSideEffects(n, compiler);
    case Token.NEW:
      return NodeUtil.constructorCallHasSideEffects(n, compiler);
    case Token.NAME:
      // A variable definition.
      return n.hasChildren();
    default:
      return false;
  }
}
Example 5
Source File: Cardumen_00200_s.java    From coming with MIT License 6 votes vote down vote up 
static boolean nodeTypeMayHaveSideEffects(Node n, AbstractCompiler compiler) {
  if (isAssignmentOp(n)) {
    return true;
  }

  switch(n.getType()) {
    case Token.DELPROP:
    case Token.DEC:
    case Token.INC:
    case Token.THROW:
      return true;
    case Token.CALL:
      return NodeUtil.functionCallHasSideEffects(n, compiler);
    case Token.NEW:
      return NodeUtil.constructorCallHasSideEffects(n, compiler);
    case Token.NAME:
      // A variable definition.
      return n.hasChildren();
    default:
      return false;
  }
}
Example 6
Source File: ControlFlowAnalysis.java    From astor with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * Determines if the subtree might throw an exception.
 */
public static boolean mayThrowException(Node n) {
  switch (n.getType()) {
    case Token.CALL:
    case Token.GETPROP:
    case Token.GETELEM:
    case Token.THROW:
    case Token.NEW:
    case Token.ASSIGN:
    case Token.INC:
    case Token.DEC:
    case Token.INSTANCEOF:
      return true;
    case Token.FUNCTION:
      return false;
  }
  for (Node c = n.getFirstChild(); c != null; c = c.getNext()) {
    if (!ControlFlowGraph.isEnteringNewCfgNode(c) && mayThrowException(c)) {
      return true;
    }
  }
  return false;
}
Example 7
Source File: Cardumen_00200_s.java    From coming with MIT License 5 votes vote down vote up 
static boolean isNumericResultHelper(Node n) {
  switch (n.getType()) {
    case Token.ADD:
      return !mayBeString(n.getFirstChild())
          && !mayBeString(n.getLastChild());
    case Token.BITNOT:
    case Token.BITOR:
    case Token.BITXOR:
    case Token.BITAND:
    case Token.LSH:
    case Token.RSH:
    case Token.URSH:
    case Token.SUB:
    case Token.MUL:
    case Token.MOD:
    case Token.DIV:
    case Token.INC:
    case Token.DEC:
    case Token.POS:
    case Token.NEG:
    case Token.NUMBER:
      return true;
    case Token.NAME:
      String name = n.getString();
      if (name.equals("NaN")) {
        return true;
      }
      if (name.equals("Infinity")) {
        return true;
      }
      return false;
    default:
      return false;
  }
}
Example 8
Source File: Closure_61_NodeUtil_s.java    From coming with MIT License 5 votes vote down vote up 
static boolean isNumericResultHelper(Node n) {
  switch (n.getType()) {
    case Token.ADD:
      return !mayBeString(n.getFirstChild())
          && !mayBeString(n.getLastChild());
    case Token.BITNOT:
    case Token.BITOR:
    case Token.BITXOR:
    case Token.BITAND:
    case Token.LSH:
    case Token.RSH:
    case Token.URSH:
    case Token.SUB:
    case Token.MUL:
    case Token.MOD:
    case Token.DIV:
    case Token.INC:
    case Token.DEC:
    case Token.POS:
    case Token.NEG:
    case Token.NUMBER:
      return true;
    case Token.NAME:
      String name = n.getString();
      if (name.equals("NaN")) {
        return true;
      }
      if (name.equals("Infinity")) {
        return true;
      }
      return false;
    default:
      return false;
  }
}
Example 9
Source File: Closure_75_NodeUtil_s.java    From coming with MIT License 5 votes vote down vote up 
static boolean isNumericResultHelper(Node n) {
  switch (n.getType()) {
    case Token.ADD:
      return !mayBeString(n.getFirstChild())
          && !mayBeString(n.getLastChild());
    case Token.BITNOT:
    case Token.BITOR:
    case Token.BITXOR:
    case Token.BITAND:
    case Token.LSH:
    case Token.RSH:
    case Token.URSH:
    case Token.SUB:
    case Token.MUL:
    case Token.MOD:
    case Token.DIV:
    case Token.INC:
    case Token.DEC:
    case Token.POS:
    case Token.NEG:
    case Token.NUMBER:
      return true;
    case Token.NAME:
      String name = n.getString();
      if (name.equals("NaN")) {
        return true;
      }
      if (name.equals("Infinity")) {
        return true;
      }
      return false;
    default:
      return false;
  }
}
Example 10
Source File: Closure_10_NodeUtil_s.java    From coming with MIT License 5 votes vote down vote up 
static boolean isNumericResultHelper(Node n) {
  switch (n.getType()) {
    case Token.ADD:
      return !mayBeString(n.getFirstChild())
          && !mayBeString(n.getLastChild());
    case Token.BITNOT:
    case Token.BITOR:
    case Token.BITXOR:
    case Token.BITAND:
    case Token.LSH:
    case Token.RSH:
    case Token.URSH:
    case Token.SUB:
    case Token.MUL:
    case Token.MOD:
    case Token.DIV:
    case Token.INC:
    case Token.DEC:
    case Token.POS:
    case Token.NEG:
    case Token.NUMBER:
      return true;
    case Token.NAME:
      String name = n.getString();
      if (name.equals("NaN")) {
        return true;
      }
      if (name.equals("Infinity")) {
        return true;
      }
      return false;
    default:
      return false;
  }
}
Example 11
Source File: Closure_60_NodeUtil_t.java    From coming with MIT License 4 votes vote down vote up 
static int precedence(int type) {
  switch (type) {
    case Token.COMMA:  return 0;
    case Token.ASSIGN_BITOR:
    case Token.ASSIGN_BITXOR:
    case Token.ASSIGN_BITAND:
    case Token.ASSIGN_LSH:
    case Token.ASSIGN_RSH:
    case Token.ASSIGN_URSH:
    case Token.ASSIGN_ADD:
    case Token.ASSIGN_SUB:
    case Token.ASSIGN_MUL:
    case Token.ASSIGN_DIV:
    case Token.ASSIGN_MOD:
    case Token.ASSIGN: return 1;
    case Token.HOOK:   return 2;  // ?: operator
    case Token.OR:     return 3;
    case Token.AND:    return 4;
    case Token.BITOR:  return 5;
    case Token.BITXOR: return 6;
    case Token.BITAND: return 7;
    case Token.EQ:
    case Token.NE:
    case Token.SHEQ:
    case Token.SHNE:   return 8;
    case Token.LT:
    case Token.GT:
    case Token.LE:
    case Token.GE:
    case Token.INSTANCEOF:
    case Token.IN:     return 9;
    case Token.LSH:
    case Token.RSH:
    case Token.URSH:   return 10;
    case Token.SUB:
    case Token.ADD:    return 11;
    case Token.MUL:
    case Token.MOD:
    case Token.DIV:    return 12;
    case Token.INC:
    case Token.DEC:
    case Token.NEW:
    case Token.DELPROP:
    case Token.TYPEOF:
    case Token.VOID:
    case Token.NOT:
    case Token.BITNOT:
    case Token.POS:
    case Token.NEG:    return 13;

    case Token.CALL:
    case Token.GETELEM:
    case Token.GETPROP:
    // Data values
    case Token.ARRAYLIT:
    case Token.EMPTY:  // TODO(johnlenz): remove this.
    case Token.FALSE:
    case Token.FUNCTION:
    case Token.NAME:
    case Token.NULL:
    case Token.NUMBER:
    case Token.OBJECTLIT:
    case Token.REGEXP:
    case Token.STRING:
    case Token.THIS:
    case Token.TRUE:
      return 15;

    default: throw new Error("Unknown precedence for " +
                             Node.tokenToName(type) +
                             " (type " + type + ")");
  }
}
Example 12
Source File: Closure_94_NodeUtil_s.java    From coming with MIT License 4 votes vote down vote up 
static int precedence(int type) {
  switch (type) {
    case Token.COMMA:  return 0;
    case Token.ASSIGN_BITOR:
    case Token.ASSIGN_BITXOR:
    case Token.ASSIGN_BITAND:
    case Token.ASSIGN_LSH:
    case Token.ASSIGN_RSH:
    case Token.ASSIGN_URSH:
    case Token.ASSIGN_ADD:
    case Token.ASSIGN_SUB:
    case Token.ASSIGN_MUL:
    case Token.ASSIGN_DIV:
    case Token.ASSIGN_MOD:
    case Token.ASSIGN: return 1;
    case Token.HOOK:   return 2;  // ?: operator
    case Token.OR:     return 3;
    case Token.AND:    return 4;
    case Token.BITOR:  return 5;
    case Token.BITXOR: return 6;
    case Token.BITAND: return 7;
    case Token.EQ:
    case Token.NE:
    case Token.SHEQ:
    case Token.SHNE:   return 8;
    case Token.LT:
    case Token.GT:
    case Token.LE:
    case Token.GE:
    case Token.INSTANCEOF:
    case Token.IN:     return 9;
    case Token.LSH:
    case Token.RSH:
    case Token.URSH:   return 10;
    case Token.SUB:
    case Token.ADD:    return 11;
    case Token.MUL:
    case Token.MOD:
    case Token.DIV:    return 12;
    case Token.INC:
    case Token.DEC:
    case Token.NEW:
    case Token.DELPROP:
    case Token.TYPEOF:
    case Token.VOID:
    case Token.NOT:
    case Token.BITNOT:
    case Token.POS:
    case Token.NEG:    return 13;

    case Token.ARRAYLIT:
    case Token.CALL:
    case Token.EMPTY:
    case Token.FALSE:
    case Token.FUNCTION:
    case Token.GETELEM:
    case Token.GETPROP:
    case Token.GET_REF:
    case Token.IF:
    case Token.LP:
    case Token.NAME:
    case Token.NULL:
    case Token.NUMBER:
    case Token.OBJECTLIT:
    case Token.REGEXP:
    case Token.RETURN:
    case Token.STRING:
    case Token.THIS:
    case Token.TRUE:
      return 15;

    default: throw new Error("Unknown precedence for " +
                             Node.tokenToName(type) +
                             " (type " + type + ")");
  }
}
Example 13
Source File: Closure_80_NodeUtil_s.java    From coming with MIT License 4 votes vote down vote up 
/**
 * @param locals A predicate to apply to unknown local values.
 * @return Whether the node is known to be a value that is not a reference
 *     outside the expression scope.
 */
static boolean evaluatesToLocalValue(Node value, Predicate<Node> locals) {
  switch (value.getType()) {
    case Token.ASSIGN:
      // A result that is aliased by a non-local name, is the effectively the
      // same as returning a non-local name, but this doesn't matter if the
      // value is immutable.
      return NodeUtil.isImmutableValue(value.getLastChild())
          || (locals.apply(value)
              && evaluatesToLocalValue(value.getLastChild(), locals));
    case Token.COMMA:
      return evaluatesToLocalValue(value.getLastChild(), locals);
    case Token.AND:
    case Token.OR:
      return evaluatesToLocalValue(value.getFirstChild(), locals)
         && evaluatesToLocalValue(value.getLastChild(), locals);
    case Token.HOOK:
      return evaluatesToLocalValue(value.getFirstChild().getNext(), locals)
         && evaluatesToLocalValue(value.getLastChild(), locals);
    case Token.INC:
    case Token.DEC:
      if (value.getBooleanProp(Node.INCRDECR_PROP)) {
        return evaluatesToLocalValue(value.getFirstChild(), locals);
      } else {
        return true;
      }
    case Token.THIS:
      return locals.apply(value);
    case Token.NAME:
      return isImmutableValue(value) || locals.apply(value);
    case Token.GETELEM:
    case Token.GETPROP:
      // There is no information about the locality of object properties.
      return locals.apply(value);
    case Token.CALL:
      return callHasLocalResult(value)
          || isToStringMethodCall(value)
          || locals.apply(value);
    case Token.NEW:
      return newHasLocalResult(value)
             || locals.apply(value);
    case Token.FUNCTION:
    case Token.REGEXP:
    case Token.ARRAYLIT:
    case Token.OBJECTLIT:
      // Literals objects with non-literal children are allowed.
      return true;
    case Token.IN:
      // TODO(johnlenz): should IN operator be included in #isSimpleOperator?
      return true;
    default:
      // Other op force a local value:
      //  x = '' + g (x is now an local string)
      //  x -= g (x is now an local number)
      if (isAssignmentOp(value)
          || isSimpleOperator(value)
          || isImmutableValue(value)) {
        return true;
      }

      throw new IllegalStateException(
          "Unexpected expression node" + value +
          "\n parent:" + value.getParent());
  }
}
Example 14
Source File: Closure_86_NodeUtil_t.java    From coming with MIT License 4 votes vote down vote up 
/**
 * @param locals A predicate to apply to unknown local values.
 * @return Whether the node is known to be a value that is not a reference
 *     outside the expression scope.
 */
static boolean evaluatesToLocalValue(Node value, Predicate<Node> locals) {
  switch (value.getType()) {
    case Token.ASSIGN:
      // A result that is aliased by a non-local name, is the effectively the
      // same as returning a non-local name, but this doesn't matter if the
      // value is immutable.
      return NodeUtil.isImmutableValue(value.getLastChild())
          || (locals.apply(value)
              && evaluatesToLocalValue(value.getLastChild(), locals));
    case Token.COMMA:
      return evaluatesToLocalValue(value.getLastChild(), locals);
    case Token.AND:
    case Token.OR:
      return evaluatesToLocalValue(value.getFirstChild(), locals)
         && evaluatesToLocalValue(value.getLastChild(), locals);
    case Token.HOOK:
      return evaluatesToLocalValue(value.getFirstChild().getNext(), locals)
         && evaluatesToLocalValue(value.getLastChild(), locals);
    case Token.INC:
    case Token.DEC:
      if (value.getBooleanProp(Node.INCRDECR_PROP)) {
        return evaluatesToLocalValue(value.getFirstChild(), locals);
      } else {
        return true;
      }
    case Token.THIS:
      return locals.apply(value);
    case Token.NAME:
      return isImmutableValue(value) || locals.apply(value);
    case Token.GETELEM:
    case Token.GETPROP:
      // There is no information about the locality of object properties.
      return locals.apply(value);
    case Token.CALL:
      return callHasLocalResult(value)
          || isToStringMethodCall(value)
          || locals.apply(value);
    case Token.NEW:
      // TODO(nicksantos): This needs to be changed so that it
      // returns true iff we're sure the value was never aliased from inside
      // the constructor (similar to callHasLocalResult)
      return false;
    case Token.FUNCTION:
    case Token.REGEXP:
    case Token.ARRAYLIT:
    case Token.OBJECTLIT:
      // Literals objects with non-literal children are allowed.
      return true;
    case Token.IN:
      // TODO(johnlenz): should IN operator be included in #isSimpleOperator?
      return true;
    default:
      // Other op force a local value:
      //  x = '' + g (x is now an local string)
      //  x -= g (x is now an local number)
      if (isAssignmentOp(value)
          || isSimpleOperator(value)
          || isImmutableValue(value)) {
        return true;
      }

      throw new IllegalStateException(
          "Unexpected expression node" + value +
          "\n parent:" + value.getParent());
  }
}
Example 15
Source File: PureFunctionIdentifier.java    From astor with GNU General Public License v2.0 4 votes vote down vote up 
private static boolean isIncDec(Node n) {
  int type = n.getType();
  return (type == Token.INC || type == Token.DEC);
}
Example 16
Source File: Closure_61_NodeUtil_t.java    From coming with MIT License 4 votes vote down vote up 
static int precedence(int type) {
  switch (type) {
    case Token.COMMA:  return 0;
    case Token.ASSIGN_BITOR:
    case Token.ASSIGN_BITXOR:
    case Token.ASSIGN_BITAND:
    case Token.ASSIGN_LSH:
    case Token.ASSIGN_RSH:
    case Token.ASSIGN_URSH:
    case Token.ASSIGN_ADD:
    case Token.ASSIGN_SUB:
    case Token.ASSIGN_MUL:
    case Token.ASSIGN_DIV:
    case Token.ASSIGN_MOD:
    case Token.ASSIGN: return 1;
    case Token.HOOK:   return 2;  // ?: operator
    case Token.OR:     return 3;
    case Token.AND:    return 4;
    case Token.BITOR:  return 5;
    case Token.BITXOR: return 6;
    case Token.BITAND: return 7;
    case Token.EQ:
    case Token.NE:
    case Token.SHEQ:
    case Token.SHNE:   return 8;
    case Token.LT:
    case Token.GT:
    case Token.LE:
    case Token.GE:
    case Token.INSTANCEOF:
    case Token.IN:     return 9;
    case Token.LSH:
    case Token.RSH:
    case Token.URSH:   return 10;
    case Token.SUB:
    case Token.ADD:    return 11;
    case Token.MUL:
    case Token.MOD:
    case Token.DIV:    return 12;
    case Token.INC:
    case Token.DEC:
    case Token.NEW:
    case Token.DELPROP:
    case Token.TYPEOF:
    case Token.VOID:
    case Token.NOT:
    case Token.BITNOT:
    case Token.POS:
    case Token.NEG:    return 13;

    case Token.CALL:
    case Token.GETELEM:
    case Token.GETPROP:
    // Data values
    case Token.ARRAYLIT:
    case Token.EMPTY:  // TODO(johnlenz): remove this.
    case Token.FALSE:
    case Token.FUNCTION:
    case Token.NAME:
    case Token.NULL:
    case Token.NUMBER:
    case Token.OBJECTLIT:
    case Token.REGEXP:
    case Token.STRING:
    case Token.THIS:
    case Token.TRUE:
      return 15;

    default: throw new Error("Unknown precedence for " +
                             Node.tokenToName(type) +
                             " (type " + type + ")");
  }
}
Example 17
Source File: NodeUtil.java    From astor with GNU General Public License v2.0 4 votes vote down vote up 
/**
 * @param locals A predicate to apply to unknown local values.
 * @return Whether the node is known to be a value that is not a reference
 *     outside the expression scope.
 */
static boolean evaluatesToLocalValue(Node value, Predicate<Node> locals) {
  switch (value.getType()) {
    case Token.CAST:
      return evaluatesToLocalValue(value.getFirstChild(), locals);
    case Token.ASSIGN:
      // A result that is aliased by a non-local name, is the effectively the
      // same as returning a non-local name, but this doesn't matter if the
      // value is immutable.
      return NodeUtil.isImmutableValue(value.getLastChild())
          || (locals.apply(value)
              && evaluatesToLocalValue(value.getLastChild(), locals));
    case Token.COMMA:
      return evaluatesToLocalValue(value.getLastChild(), locals);
    case Token.AND:
    case Token.OR:
      return evaluatesToLocalValue(value.getFirstChild(), locals)
         && evaluatesToLocalValue(value.getLastChild(), locals);
    case Token.HOOK:
      return evaluatesToLocalValue(value.getFirstChild().getNext(), locals)
         && evaluatesToLocalValue(value.getLastChild(), locals);
    case Token.INC:
    case Token.DEC:
      if (value.getBooleanProp(Node.INCRDECR_PROP)) {
        return evaluatesToLocalValue(value.getFirstChild(), locals);
      } else {
        return true;
      }
    case Token.THIS:
      return locals.apply(value);
    case Token.NAME:
      return isImmutableValue(value) || locals.apply(value);
    case Token.GETELEM:
    case Token.GETPROP:
      // There is no information about the locality of object properties.
      return locals.apply(value);
    case Token.CALL:
      return callHasLocalResult(value)
          || isToStringMethodCall(value)
          || locals.apply(value);
    case Token.NEW:
      return newHasLocalResult(value)
             || locals.apply(value);
    case Token.FUNCTION:
    case Token.REGEXP:
    case Token.ARRAYLIT:
    case Token.OBJECTLIT:
      // Literals objects with non-literal children are allowed.
      return true;
    case Token.DELPROP:
    case Token.IN:
      // TODO(johnlenz): should IN operator be included in #isSimpleOperator?
      return true;
    default:
      // Other op force a local value:
      //  x = '' + g (x is now an local string)
      //  x -= g (x is now an local number)
      if (isAssignmentOp(value)
          || isSimpleOperator(value)
          || isImmutableValue(value)) {
        return true;
      }

      throw new IllegalStateException(
          "Unexpected expression node" + value +
          "\n parent:" + value.getParent());
  }
}
Example 18
Source File: Closure_75_NodeUtil_s.java    From coming with MIT License 4 votes vote down vote up 
/**
 * @param locals A predicate to apply to unknown local values.
 * @return Whether the node is known to be a value that is not a reference
 *     outside the expression scope.
 */
static boolean evaluatesToLocalValue(Node value, Predicate<Node> locals) {
  switch (value.getType()) {
    case Token.ASSIGN:
      // A result that is aliased by a non-local name, is the effectively the
      // same as returning a non-local name, but this doesn't matter if the
      // value is immutable.
      return NodeUtil.isImmutableValue(value.getLastChild())
          || (locals.apply(value)
              && evaluatesToLocalValue(value.getLastChild(), locals));
    case Token.COMMA:
      return evaluatesToLocalValue(value.getLastChild(), locals);
    case Token.AND:
    case Token.OR:
      return evaluatesToLocalValue(value.getFirstChild(), locals)
         && evaluatesToLocalValue(value.getLastChild(), locals);
    case Token.HOOK:
      return evaluatesToLocalValue(value.getFirstChild().getNext(), locals)
         && evaluatesToLocalValue(value.getLastChild(), locals);
    case Token.INC:
    case Token.DEC:
      if (value.getBooleanProp(Node.INCRDECR_PROP)) {
        return evaluatesToLocalValue(value.getFirstChild(), locals);
      } else {
        return true;
      }
    case Token.THIS:
      return locals.apply(value);
    case Token.NAME:
      return isImmutableValue(value) || locals.apply(value);
    case Token.GETELEM:
    case Token.GETPROP:
      // There is no information about the locality of object properties.
      return locals.apply(value);
    case Token.CALL:
      return callHasLocalResult(value)
          || isToStringMethodCall(value)
          || locals.apply(value);
    case Token.NEW:
      return newHasLocalResult(value)
             || locals.apply(value);
    case Token.FUNCTION:
    case Token.REGEXP:
    case Token.ARRAYLIT:
    case Token.OBJECTLIT:
      // Literals objects with non-literal children are allowed.
      return true;
    case Token.DELPROP:
    case Token.IN:
      // TODO(johnlenz): should IN operator be included in #isSimpleOperator?
      return true;
    default:
      // Other op force a local value:
      //  x = '' + g (x is now an local string)
      //  x -= g (x is now an local number)
      if (isAssignmentOp(value)
          || isSimpleOperator(value)
          || isImmutableValue(value)) {
        return true;
      }

      throw new IllegalStateException(
          "Unexpected expression node" + value +
          "\n parent:" + value.getParent());
  }
}
Example 19
Source File: Closure_10_NodeUtil_t.java    From coming with MIT License 4 votes vote down vote up 
static int precedence(int type) {
  switch (type) {
    case Token.COMMA:  return 0;
    case Token.ASSIGN_BITOR:
    case Token.ASSIGN_BITXOR:
    case Token.ASSIGN_BITAND:
    case Token.ASSIGN_LSH:
    case Token.ASSIGN_RSH:
    case Token.ASSIGN_URSH:
    case Token.ASSIGN_ADD:
    case Token.ASSIGN_SUB:
    case Token.ASSIGN_MUL:
    case Token.ASSIGN_DIV:
    case Token.ASSIGN_MOD:
    case Token.ASSIGN: return 1;
    case Token.HOOK:   return 2;  // ?: operator
    case Token.OR:     return 3;
    case Token.AND:    return 4;
    case Token.BITOR:  return 5;
    case Token.BITXOR: return 6;
    case Token.BITAND: return 7;
    case Token.EQ:
    case Token.NE:
    case Token.SHEQ:
    case Token.SHNE:   return 8;
    case Token.LT:
    case Token.GT:
    case Token.LE:
    case Token.GE:
    case Token.INSTANCEOF:
    case Token.IN:     return 9;
    case Token.LSH:
    case Token.RSH:
    case Token.URSH:   return 10;
    case Token.SUB:
    case Token.ADD:    return 11;
    case Token.MUL:
    case Token.MOD:
    case Token.DIV:    return 12;
    case Token.INC:
    case Token.DEC:
    case Token.NEW:
    case Token.DELPROP:
    case Token.TYPEOF:
    case Token.VOID:
    case Token.NOT:
    case Token.BITNOT:
    case Token.POS:
    case Token.NEG:    return 13;

    case Token.CALL:
    case Token.GETELEM:
    case Token.GETPROP:
    // Data values
    case Token.ARRAYLIT:
    case Token.EMPTY:  // TODO(johnlenz): remove this.
    case Token.FALSE:
    case Token.FUNCTION:
    case Token.NAME:
    case Token.NULL:
    case Token.NUMBER:
    case Token.OBJECTLIT:
    case Token.REGEXP:
    case Token.STRING:
    case Token.STRING_KEY:
    case Token.THIS:
    case Token.TRUE:
      return 15;

    default: throw new Error("Unknown precedence for " +
                             Token.name(type) +
                             " (type " + type + ")");
  }
}
Example 20
Source File: FunctionArgumentInjector.java    From astor with GNU General Public License v2.0 2 votes vote down vote up 
/**
 * This is similar to NodeUtil.isLValue except that object properties and
 * array member modification aren't important ("o" in "o.a = 2" is still "o"
 * after assignment, where in as "o = x", "o" is now "x").
 *
 * This also looks for the redefinition of a name.
 *   function (x){var x;}
 *
 * @param n The NAME node in question.
 * @param parent The parent of the node.
 */
private static boolean canNameValueChange(Node n, Node parent) {
  int type = parent.getType();
  return (type == Token.VAR || type == Token.INC || type == Token.DEC ||
      (NodeUtil.isAssignmentOp(parent) && parent.getFirstChild() == n));
}