Field is a slot which "stores" a value.
Inheritance: Slot
Ejemplo n.º 1
0
        /// <summary>
        /// Parameterize the specified field (reuse if generic
        /// parameterization isn't necessary).
        /// </summary>
        internal Field parameterize(Field f)
        {
            // if not generic, short circuit and reuse original
              Type of = f.type();
              if (!of.isGenericParameter()) return f;

              // create new parameterized version
              of = parameterize(of);
              Field pf = new Field(this, f.m_name, f.m_flags, f.m_facets, f.m_lineNum, of);
              pf.m_reflect = f.m_reflect;
              return pf;
        }
Ejemplo n.º 2
0
        /// <summary>
        /// Figure out the map type:
        ///   1) if t was explicit then use it (check that it was a map type)
        ///   2) if we have field typed as a map , then use its definition
        ///   3) if inferred is false, then drop back to Obj:Obj
        ///   4) If inferred is true then return null and we'll infer the common key/val types
        /// </summary>
        private MapType toMapType(Type t, Field curField, bool infer)
        {
            if (t != null)
              {
            try { return (MapType)t; }
            catch (System.InvalidCastException) { throw err("Invalid map type: " + t); }
              }

              if (curField != null)
              {
            Type ft = curField.type().toNonNullable();
            if (ft is MapType) return (MapType)ft;
              }

              if (infer) return null;
              return defaultMapType;
        }
Ejemplo n.º 3
0
 /// <summary>
 /// Figure out the type of the list:
 ///   1) if t was explicit then use it
 ///   2) if we have field typed as a list, then use its definition
 ///   3) if inferred is false, then drop back to list of Obj
 ///   4) If inferred is true then return null and we'll infer the common type
 /// </summary>
 private Type toListOfType(Type t, Field curField, bool infer)
 {
     if (t != null) return t;
       if (curField != null)
       {
     Type ft = curField.type().toNonNullable();
     if (ft is ListType) return ((ListType)ft).m_v;
       }
       if (infer) return null;
       return Sys.ObjType.toNullable();
 }
Ejemplo n.º 4
0
        /// <summary>
        /// obj := literal | simple | complex
        /// </summary>
        private object readObj(Field curField, Type peekType, bool root)
        {
            // literals are stand alone
              if (Token.isLiteral(curt))
              {
            object val = tokenizer.m_val;
            consume();
            return val;
              }

              // [ is always list/map collection
              if (curt == Token.LBRACKET)
            return readCollection(curField, peekType);

              // at this point all remaining options must start
              // with a type signature - if peekType is non-null
              // then we've already read the type signature
              int line = tokenizer.m_line;
              Type t = (peekType != null) ? peekType : readType();

              // type:     type#"
              // simple:   type(
              // list/map: type[
              // complex:  type || type{
              if (curt == Token.LPAREN)
            return readSimple(line, t);
              else if (curt == Token.POUND)
            return readTypeOrSlotLiteral(line, t);
              else if (curt == Token.LBRACKET)
            return readCollection(curField, t);
              else
            return readComplex(line, t, root);
        }
Ejemplo n.º 5
0
        //////////////////////////////////////////////////////////////////////////
        // Collection
        //////////////////////////////////////////////////////////////////////////
        /// <summary>
        /// collection := list | map
        /// </summary>
        private object readCollection(Field curField, Type t)
        {
            // opening [
              consume(Token.LBRACKET, "Expecting '['");

              // if this could be a map type signature:
              //    [qname:qname]
              //    [qname:qname][]
              //    [qname:qname][][] ...
              // or it could just be the type signature of
              // of a embedded simple, complex, or list
              Type peekType = null;
              if (curt == Token.ID && t == null)
              {
            // peek at the type
            peekType = readType();

            // if we have [mapType] then this is non-inferred type signature
            if (curt == Token.RBRACKET && peekType is MapType)
            {
              t = peekType; peekType = null;
              consume();
              while (curt == Token.LRBRACKET) { consume(); t = t.toListOf(); }
              if (curt == Token.QUESTION) { consume(); t = t.toNullable(); }
              if (curt == Token.POUND) { consume(); return t; }
              consume(Token.LBRACKET, "Expecting '['");
            }
              }

              // handle special case of [,]
              if (curt == Token.COMMA && peekType == null)
              {
            consume();
            consume(Token.RBRACKET, "Expecting ']'");
            return new List(toListOfType(t, curField, false));
              }

              // handle special case of [:]
              if (curt == Token.COLON && peekType == null)
              {
            consume();
            consume(Token.RBRACKET, "Expecting ']'");
            return new Map(toMapType(t, curField, false));
              }

              // read first list item or first map key
              object first = readObj(null, peekType, false);

              // now we can distinguish b/w list and map
              if (curt == Token.COLON)
            return readMap(toMapType(t, curField, true), first);
              else
            return readList(toListOfType(t, curField, true), first);
        }
Ejemplo n.º 6
0
 void complexSet(object obj, Field field, object val, int line)
 {
     try
       {
     if (field.isConst())
       field.set(obj, OpUtil.toImmutable(val), false);
     else
       field.set(obj, val);
       }
       catch (System.Exception ex)
       {
     throw err("Cannot set field " + field.qname() + ": " + ex, line, ex);
       }
 }