/// <summary>
/// Initializes a new instance of <see cref="Case"/> AST node.
/// </summary>
/// <param name="expression">The target expression of the case node.</param>
/// <param name="caseList">Series of cases for the case node.</param>
public Case(Node expression, ExpressionList caseList)
{
this.expression = expression;
this.caseList = caseList;
NormalizeCases();
}
/// <summary>
/// Updates the properties of the <see cref="Operator"/> based on the <paramref name="expressionList"/> parameter.
/// </summary>
/// <param name="op">The <see cref="Operator"/> to update.</param>
/// <param name="expressionList">The list of arguments wrapped in an <see cref="ExpressionList"/>.</param>
/// <exception cref="ParseException"></exception>
/// <returns>Returns the updated <see cref="Operator"/>.</returns>
public static Node BuiltinOpInvoke(Operator op, ExpressionList expressionList)
{
switch (expressionList.Length)
{
case 1:
op.RightArgument = expressionList[0];
break;
case 2:
op.RightArgument = expressionList[1];
op.LeftArgument = expressionList[0];
break;
default:
if (!(op is EachOperator))
{
throw new ParseException("Valence", false);
}
EachOperator eachOp = (EachOperator)op;
eachOp.IsGeneralApply = true;
eachOp.RightArgument = expressionList;
break;
}
return(op);
}
public override bool Equals(object obj)
{
if (!(obj is ExpressionList))
{
return(false);
}
ExpressionList other = (ExpressionList)obj;
if (this.nodeList.Count != other.nodeList.Count)
{
return(false);
}
List <Node> myList = this.nodeList.ToList <Node>();
List <Node> otherList = other.nodeList.ToList <Node>();
for (int i = 0; i < myList.Count; i++)
{
if (!myList[i].Equals(otherList[i]))
{
return(false);
}
}
return(true);
}
/// <summary>
/// Initializes a new instance of <see cref="Case"/> AST node.
/// </summary>
/// <param name="expression">The target expression of the case node.</param>
/// <param name="caseList">Series of cases for the case node.</param>
public Case(Node expression, ExpressionList caseList)
{
this.expression = expression;
this.caseList = caseList;
NormalizeCases();
}
/// <summary>
/// Initializes a new instance of <see cref="UserDefFunction"/> AST node.
/// </summary>
/// <param name="name">The name of the user defined function.</param>
/// <param name="parameters">The parameters for the user defined function.</param>
/// <param name="codeblock">The codeblock for the user defined function.</param>
/// <param name="code">The string representation of the user defined function.</param>
public UserDefFunction(Identifier name, ExpressionList parameters, Node codeblock, string code)
{
this.name = name;
this.parameters = parameters;
this.codeblock = codeblock;
this.code = code;
}
/// <summary>
/// Initializes a new instance of <see cref="UserDefFunction"/> AST node.
/// </summary>
/// <param name="name">The name of the user defined function.</param>
/// <param name="parameters">The parameters for the user defined function.</param>
/// <param name="codeblock">The codeblock for the user defined function.</param>
/// <param name="code">The string representation of the user defined function.</param>
public UserDefFunction(Identifier name, ExpressionList parameters, Node codeblock, string code)
{
this.name = name;
this.parameters = parameters;
this.codeblock = codeblock;
this.code = code;
}
/// <summary>
/// Build an <see cref="ExpressionList"/> AST Node with an initial set of <see cref="Node"/>s
/// </summary>
/// <remarks>
/// The order of input nodes are preserved, thus each node is added to the end of
/// the Expression List.
/// </remarks>
/// <param name="nodes">Series of <see cref="Node"/>s.</param>
/// <returns>Returns an <see cref="ExpersisonList"/> containing the give nodes</returns>
public static ExpressionList ExpressionList(params Node[] nodes)
{
ExpressionList list = new ExpressionList();
foreach (Node node in nodes)
{
list.AddLast(node);
}
return(list);
}
private static string ToDot(string parent, ExpressionList node)
{
string name = String.Format("ExpressionList{0}", counter++);
foreach (Node item in node.Items)
{
string nodeName = ToDot(name, item);
text.AppendFormat(" {0} -> {1};\n", name, nodeName);
}
return(name);
}
/// <summary>
/// Builds a Node representing a <see cref="MonadicFunction"/> or a <see cref="DyadicFunction"/> based on the
/// number of arguments in the <paramref name="expressionList"/> parameter.
/// </summary>
/// <remarks>
/// Returned nodes based on the ExpressionList parameter (number of nodes inside the list):
/// - 1: MonadicFunction
/// - 2: DyadicFunction
/// - other cases: Create parse valence error
/// </remarks>
/// <param name="token">The <see cref="Token"/> representing the built-in function.</param>
/// <param name="expressionList">List of arguments for the built-in function.</param>
/// <exception cref="ParseException">Throws exception if the number of arguments is incorrect.</exception>
/// <returns></returns>
public static Node BuiltinInvoke(Token token, ExpressionList expressionList)
{
switch (expressionList.Length)
{
case 1:
return new MonadicFunction(token, expressionList[0]);
case 2:
return new DyadicFunction(token, expressionList[0], expressionList[1]);
default:
throw new ParseException("valence?", false);
}
}
/// <summary>
/// Builds a Node representing a <see cref="MonadicFunction"/> or a <see cref="DyadicFunction"/> based on the
/// number of arguments in the <paramref name="expressionList"/> parameter.
/// </summary>
/// <remarks>
/// Returned nodes based on the ExpressionList parameter (number of nodes inside the list):
/// - 1: MonadicFunction
/// - 2: DyadicFunction
/// - other cases: Create parse valence error
/// </remarks>
/// <param name="token">The <see cref="Token"/> representing the built-in function.</param>
/// <param name="expressionList">List of arguments for the built-in function.</param>
/// <exception cref="ParseException">Throws exception if the number of arguments is incorrect.</exception>
/// <returns></returns>
public static Node BuiltinInvoke(Token token, ExpressionList expressionList)
{
switch (expressionList.Length)
{
case 1:
return(new MonadicFunction(token, expressionList[0]));
case 2:
return(new DyadicFunction(token, expressionList[0], expressionList[1]));
default:
throw new ParseException("valence?", false);
}
}
/// <summary>
/// Builds a <see cref="UserDefFunction">user defined function</see>.
/// </summary>
/// <param name="name">The name of the user defined function.</param>
/// <param name="parameters">The parameters for the user defined function.</param>
/// <param name="codeblock">The codeblock for the user defined function.</param>
/// <param name="code">The string representation of the user defined function.</param>
/// <returns>Returns a <see cref="UserDefFunction">user defined function</see>.</returns>
public static UserDefFunction UserDefFunction(Node name, ExpressionList parameters, Node codeblock, string code = "")
{
Debug.Assert(name is Identifier);
foreach (Node item in parameters.Items)
{
if (!(item is Identifier))
{
throw new ParseException(":header?", false);
}
}
return(new UserDefFunction((Identifier)name, parameters, codeblock, code));
}
/// <summary>
/// Builds a <see cref="Node"/> representing an indexing expression.
/// </summary>
/// <param name="item">The target of the indexing.</param>
/// <param name="indexExpression">The indexer expressions.</param>
/// <returns>Returns a <see cref="Indexing"/> AST node.</returns>
public static Indexing Indexing(Node item, ExpressionList indexExpression)
{
return new Indexing(item, indexExpression);
}
/// <summary>
/// Builds a <see cref="Case"/> node.
/// </summary>
/// <param name="expression">The target expression of the <see cref="Case"/> node.</param>
/// <param name="caseList">Series of cases for the <see cref="Case"/> node.</param>
/// <returns>Returns the <see cref="Case"/> node.</returns>
public static Case Case(Node expression, ExpressionList caseList)
{
return new Case(expression, caseList);
}
/// <summary>
/// Initializes a new instance of <see cref="Indexing"/> AST node.
/// </summary>
/// <param name="item">The target of the indexing.</param>
/// <param name="indexExpression">The indexer expressions.</param>
public Indexing(Node item, ExpressionList indexExpression)
{
this.item = item;
this.indexExpression = indexExpression;
}
/// <summary>
/// Builds a <see cref="Node"/> representing an indexing expression.
/// </summary>
/// <param name="item">The target of the indexing.</param>
/// <param name="indexExpression">The indexer expressions.</param>
/// <returns>Returns a <see cref="Indexing"/> AST node.</returns>
public static Indexing Indexing(Node item, ExpressionList indexExpression)
{
return(new Indexing(item, indexExpression));
}
/// <summary>
/// Updates the properties of the <see cref="Operator"/> based on the <paramref name="expressionList"/> parameter.
/// </summary>
/// <param name="op">The <see cref="Operator"/> to update.</param>
/// <param name="expressionList">The list of arguments wrapped in an <see cref="ExpressionList"/>.</param>
/// <exception cref="ParseException"></exception>
/// <returns>Returns the updated <see cref="Operator"/>.</returns>
public static Node BuiltinOpInvoke(Operator op, ExpressionList expressionList)
{
switch (expressionList.Length)
{
case 1:
op.RightArgument = expressionList[0];
break;
case 2:
op.RightArgument = expressionList[1];
op.LeftArgument = expressionList[0];
break;
default:
if (!(op is EachOperator))
{
throw new ParseException("Valence", false);
}
EachOperator eachOp = (EachOperator)op;
eachOp.IsGeneralApply = true;
eachOp.RightArgument = expressionList;
break;
}
return op;
}
/// <summary>
/// Build an <see cref="ExpressionList"/> AST Node with an initial set of <see cref="Node"/>s
/// </summary>
/// <remarks>
/// The order of input nodes are preserved, thus each node is added to the end of
/// the Expression List.
/// </remarks>
/// <param name="nodes">Series of <see cref="Node"/>s.</param>
/// <returns>Returns an <see cref="ExpersisonList"/> containing the give nodes</returns>
public static ExpressionList ExpressionList(params Node[] nodes)
{
ExpressionList list = new ExpressionList();
foreach (Node node in nodes)
{
list.AddLast(node);
}
return list;
}
/// <summary>
/// Builds a <see cref="Case"/> node.
/// </summary>
/// <param name="expression">The target expression of the <see cref="Case"/> node.</param>
/// <param name="caseList">Series of cases for the <see cref="Case"/> node.</param>
/// <returns>Returns the <see cref="Case"/> node.</returns>
public static Case Case(Node expression, ExpressionList caseList)
{
return(new Case(expression, caseList));
}
public override DLR.Expression Generate(AplusScope scope)
{
DLR.Expression func, result;
if (this.function is Token)
{
Node wrappedFunction = new BuiltInFunction((Token)this.function);
func = wrappedFunction.Generate(scope);
}
else
{
func = this.function.Generate(scope);
}
DLR.ParameterExpression environment = scope.GetRuntimeExpression();
DLR.ParameterExpression functionParam = DLR.Expression.Variable(typeof(AType), "$$functionParam");
DLR.ParameterExpression rightParam = DLR.Expression.Variable(typeof(AType), "$$rightParam");
DLR.ParameterExpression valueParam = DLR.Expression.Variable(typeof(AType), "$$valueParam");
// TODO: rewrite this
if (this.IsGeneralApply)
{
ExpressionList argumnets = (ExpressionList)this.rightarg;
LinkedList <DLR.Expression> callArguments = new LinkedList <DLR.Expression>();
// 2. Add the parameters in !reverse! order
foreach (Node item in argumnets.Items)
{
callArguments.AddFirst(item.Generate(scope));
}
// 0. Add A+ environment as first argument for user defined functions
callArguments.AddFirst(environment);
// 1. Construct the method body
callArguments.AddFirst(functionParam.Property("NestedItem"));
result = DLR.Expression.Block(
new DLR.ParameterExpression[] { functionParam, valueParam },
DLR.Expression.Assign(functionParam, func),
DLR.Expression.IfThenElse(
DLR.Expression.PropertyOrField(functionParam, "IsFunctionScalar"),
DLR.Expression.Assign(
valueParam,
AST.UserDefInvoke.BuildInvoke(scope.GetRuntime(), callArguments)
),
DLR.Expression.Throw(
DLR.Expression.New(
typeof(Error.Valence).GetConstructor(new Type[] { typeof(string) }),
DLR.Expression.Constant("apply")
)
)
),
valueParam
);
}
else if (isDyadic)
{
DLR.Expression right = this.rightarg.Generate(scope);
DLR.Expression left = this.leftarg.Generate(scope);
DLR.ParameterExpression leftParam = DLR.Expression.Variable(typeof(AType), "$$leftParam");
result = DLR.Expression.Block(
new DLR.ParameterExpression[] { functionParam, rightParam, leftParam, valueParam },
DLR.Expression.Assign(functionParam, func),
DLR.Expression.Assign(rightParam, right),
DLR.Expression.Assign(leftParam, left),
DLR.Expression.IfThenElse(
DLR.Expression.IsTrue(
DLR.Expression.PropertyOrField(functionParam, "IsFunctionScalar")
),
DLR.Expression.Assign(
valueParam,
DLR.Expression.Call(
DLR.Expression.Constant(DyadicOperatorInstance.Apply),
DyadicOperatorInstance.Apply.GetType().GetMethod("Execute"),
functionParam, rightParam, leftParam, environment
)
),
DLR.Expression.Assign(
valueParam,
DLR.Expression.Call(
DLR.Expression.Constant(DyadicOperatorInstance.Each),
DyadicOperatorInstance.Each.GetType().GetMethod("Execute"),
functionParam, rightParam, leftParam, environment
)
)
),
valueParam
);
}
else
{
DLR.Expression right = this.rightarg.Generate(scope);
result = DLR.Expression.Block(
new DLR.ParameterExpression[] { functionParam, rightParam, valueParam },
DLR.Expression.Assign(functionParam, func),
DLR.Expression.Assign(rightParam, right),
DLR.Expression.IfThenElse(
DLR.Expression.IsTrue(
DLR.Expression.PropertyOrField(functionParam, "IsFunctionScalar")
),
DLR.Expression.Assign(
valueParam,
DLR.Expression.Call(
DLR.Expression.Constant(MonadicOperatorInstance.Apply),
MonadicOperatorInstance.Apply.GetType().GetMethod("Execute"),
functionParam, rightParam, environment
)
),
DLR.Expression.Assign(
valueParam,
DLR.Expression.Call(
DLR.Expression.Constant(MonadicOperatorInstance.Each),
MonadicOperatorInstance.Each.GetType().GetMethod("Execute"),
functionParam, rightParam, environment
)
)
),
valueParam
);
}
return(result);
}
/// <summary>
/// Initializes a new instance of <see cref="UserDefInvoke"/> AST node.
/// </summary>
/// <param name="method">The identifier of the user defined function to invoke.</param>
/// <param name="arguments">The arguments for the user defined function.</param>
public UserDefInvoke(Identifier method, ExpressionList arguments)
{
this.method = method;
this.arguments = arguments;
}
private static string ToDot(string parent, ExpressionList node)
{
string name = String.Format("ExpressionList{0}", counter++);
foreach (Node item in node.Items)
{
string nodeName = ToDot(name, item);
text.AppendFormat(" {0} -> {1};\n", name, nodeName);
}
return name;
}
/// <summary>
/// Initializes a new instance of <see cref="UserDefInvoke"/> AST node.
/// </summary>
/// <param name="method">The identifier of the user defined function to invoke.</param>
/// <param name="arguments">The arguments for the user defined function.</param>
public UserDefInvoke(Identifier method, ExpressionList arguments)
{
this.method = method;
this.arguments = arguments;
}
/// <summary>
/// Initializes a new instance of <see cref="Indexing"/> AST node.
/// </summary>
/// <param name="item">The target of the indexing.</param>
/// <param name="indexExpression">The indexer expressions.</param>
public Indexing(Node item, ExpressionList indexExpression)
{
this.item = item;
this.indexExpression = indexExpression;
}
/// <summary>
/// Builds a <see cref="UserDefFunction">user defined function</see>.
/// </summary>
/// <param name="name">The name of the user defined function.</param>
/// <param name="parameters">The parameters for the user defined function.</param>
/// <param name="codeblock">The codeblock for the user defined function.</param>
/// <param name="code">The string representation of the user defined function.</param>
/// <returns>Returns a <see cref="UserDefFunction">user defined function</see>.</returns>
public static UserDefFunction UserDefFunction(Node name, ExpressionList parameters, Node codeblock, string code = "")
{
Debug.Assert(name is Identifier);
foreach (Node item in parameters.Items)
{
if (!(item is Identifier))
{
throw new ParseException(":header?", false);
}
}
return new UserDefFunction((Identifier)name, parameters, codeblock, code);
}