public UstNode VisitArgumentList([NotNull] ECMAScriptParser.ArgumentListContext context)
{
Expression[] args = context.singleExpression().Select(expr => Visit(expr).ToExpressionIfRequired()).ToArray();
var result = new ArgsNode(args, context.GetTextSpan(), FileNode);
return(result);
}
public UstNode VisitExpressionList(JavaParser.ExpressionListContext context)
{
Expression[] exprs = context.expression().Select(expr => (Expression)Visit(expr)).ToArray();
var result = new ArgsNode(exprs, context.GetTextSpan(), FileNode);
return(result);
}
/// <summary>
/// puts ((1..20).to_a) (ok)
/// puts (1..20).to_a (error)
/// </summary>
/// <returns></returns>
private ArgsNode ParseExpressionListAsArgs()
{
ArgsNode parameters = new ArgsNode();
bool inparentheses = TryParseToken(TokenType.Separator, "(");
for (AstNode expression = ParseExpression();
expression != null;
expression = ParseExpression())
{
parameters.Push(expression);
if (!TryParseToken(TokenType.Separator, ","))
{
break;
}
}
if (inparentheses)
{
ParseToken(TokenType.Separator, ")");
if (TryParseName(DO))
{
parameters.Push(ParseBlockExpression());
}
else if (TryParseToken(TokenType.Separator, "{"))
{
parameters.Push(ParseBlockExpression(true));
}
}
return(parameters);
}
/// <summary>
/// var a = new A
/// {
/// b = 2,
/// c = 3,
/// }
///
/// var a = new A();
/// a.b = 2;
/// a.c = 3;
/// </summary>
/// <param name="node"></param>
/// <returns></returns>
public override UstNode VisitAnonymousObjectCreationExpression(AnonymousObjectCreationExpressionSyntax node)
{
var typeToken = new TypeToken("Anonymous", node.OpenBraceToken.GetTextSpan(), FileNode);
Expression[] args = node.Initializers.Select(init =>
{
try
{
var left = init.NameEquals == null ? null :
new MemberReferenceExpression(typeToken,
ConvertId(init.NameEquals.Name.Identifier), init.NameEquals.Name.GetTextSpan(), FileNode);
var right = (Expression)base.Visit(init.Expression);
var assignment = new AssignmentExpression(left, right, init.GetTextSpan(), FileNode);
return(assignment);
}
catch (Exception ex)
{
Logger.LogError(new ConversionException(ex.Message));
return(null);
}
}).ToArray();
var argsNode = new ArgsNode(args, node.GetTextSpan(), FileNode);
var result = new ObjectCreateExpression(typeToken, argsNode, node.GetTextSpan(), FileNode);
return(result);
}
public UstNode VisitInvocationExpression(DslParser.InvocationExpressionContext context)
{
ArgsNode args = context.args() == null ? new ArgsNode() : (ArgsNode)VisitArgs(context.args());
var expr = (Expression)VisitExpression(context.expression());
var result = new InvocationExpression(expr, args, context.GetTextSpan(), null);
return(result);
}
public override UstNode VisitBracketedArgumentList(BracketedArgumentListSyntax node)
{
Expression[] args = node.Arguments.Select(arg => (Expression)VisitAndReturnNullIfError(arg))
.ToArray();
var result = new ArgsNode(args, node.GetTextSpan(), FileNode);
return(result);
}
public override UstNode VisitInvocationExpression(InvocationExpressionSyntax node)
{
var target = (Expression)base.Visit(node.Expression);
ArgsNode args = node.ArgumentList == null ? null : (ArgsNode)VisitArgumentList(node.ArgumentList);
var result = new InvocationExpression(target, args, node.GetTextSpan(), FileNode);
return(result);
}
public override UstNode VisitElementAccessExpression(ElementAccessExpressionSyntax node)
{
var target = (Expression)base.Visit(node.Expression);
ArgsNode args = node.ArgumentList == null ? null : (ArgsNode)VisitBracketedArgumentList(node.ArgumentList);
var result = new IndexerExpression(target, args, node.GetTextSpan(), FileNode);
return(result);
}
public UstNode VisitObjectCreationExpression(DslParser.ObjectCreationExpressionContext context)
{
var literal = (Token)VisitLiteralOrPatternId(context.literalOrPatternId());
var typeToken = new TypeToken(literal.TextValue, literal.TextSpan, null);
ArgsNode args = context.args() == null ? new ArgsNode() : (ArgsNode)VisitArgs(context.args());
var result = new ObjectCreateExpression(typeToken, args, context.GetTextSpan(), null);
return(result);
}
private DefNode ParseDefExpression()
{
Token token = t;
AstNode named = ParseFunctionNamePathExpression();
ArgsNode parameters = ParseParameterList();
ExpressionListNode body = ParseCommandList();
return(NODE_LINENO(new DefNode(named, parameters, body), token));
}
public override UstNode VisitRefTypeExpression(RefTypeExpressionSyntax node)
{
IdToken id = ConvertId(node.Keyword);
Expression expr = (Expression)base.Visit(node.Expression);
ArgsNode args = new ArgsNode(new Expression[] { expr }, expr.TextSpan, FileNode);
var result = new InvocationExpression(id, args, node.GetTextSpan(), FileNode);
return(result);
}
public UstNode VisitIndexerExpression(DslParser.IndexerExpressionContext context)
{
var target = (Expression)VisitExpression(context.expression(0));
var args = new ArgsNode(new[] { (Expression)VisitExpression(context.expression(1)) },
context.expression(1).GetTextSpan(), null);
var result = new IndexerExpression(target, args, context.GetTextSpan(), null);
return(result);
}
public override UstNode VisitTypeOfExpression(TypeOfExpressionSyntax node)
{
IdToken id = ConvertId(node.Keyword);
TypeToken type = ConvertType(base.Visit(node.Type));
ArgsNode args = new ArgsNode(new[] { type }, type.TextSpan, FileNode);
var result = new InvocationExpression(id, args, node.GetTextSpan(), FileNode);
return(result);
}
private BlockNode ParseBlockExpression(bool usebraces = false)
{
if (TryParseToken(TokenType.Separator, "|"))
{
ArgsNode paramnames = ParseParameterList(false);
ParseToken(TokenType.Separator, "|");
return(NODE_LINENO(new BlockNode(paramnames, ParseCommandList(usebraces)), t));
}
return(new BlockNode(null, ParseCommandList(usebraces)));
}
private ArgsNode GetArgsNode(TSqlParser.Expression_listContext context)
{
ArgsNode result;
if (context != null)
{
result = new ArgsNode(context.expression().Select(expr => (Expression)Visit(expr)).ToArray());
}
else
{
result = new ArgsNode();
}
return(result);
}
// Named argument
// Named expression
public override UstNode VisitObjectCreationExpression(ObjectCreationExpressionSyntax node)
{
var type = ConvertType(base.Visit(node.Type));
ArgsNode args = node.ArgumentList == null ? null : (ArgsNode)VisitArgumentList(node.ArgumentList);
var initializers = node.Initializer == null ? null :
node.Initializer.Expressions.Select(e => (Expression)VisitAndReturnNullIfError(e))
.ToList();
var result = new ObjectCreateExpression(
type,
args,
node.GetTextSpan(),
FileNode)
{
Initializers = initializers
};
return(result);
}
public UstNode VisitArgs([NotNull] DslParser.ArgsContext context)
{
List <Expression> expressions = context.arg().Select(arg =>
(Expression)VisitArg(arg)).ToList();
var span = context.GetTextSpan();
ArgsNode result;
if (expressions.All(expr => expr.NodeType != NodeType.PatternMultipleExpressions))
{
result = new ArgsNode(expressions, span, null);
}
else
{
result = new PatternExpressions()
{
Collection = expressions,
TextSpan = span
};
}
return(result);
}
public UstNode VisitCreator(JavaParser.CreatorContext context)
{
JavaParser.CreatedNameContext createdName = context.createdName();
JavaParser.ClassCreatorRestContext classCreatorRest = context.classCreatorRest();
ArgsNode args;
if (classCreatorRest != null)
{
args = (ArgsNode)Visit(classCreatorRest.arguments());
}
else
{
args = new ArgsNode();
}
// TODO: add classBody
var result = new ObjectCreateExpression(
new TypeToken(createdName.GetText(), createdName.GetTextSpan(), FileNode), args,
context.GetTextSpan(), FileNode);
return(result);
}
private ArgsNode ParseParameterList(bool canhaveparens = true)
{
Token token = null;
ArgsNode parameters = new ArgsNode();
bool inparentheses = false;
if (canhaveparens)
{
inparentheses = TryParseToken(TokenType.Separator, "(");
}
for (string name = TryParseName(out token); name != null; name = ParseName(out token))
{
if (name.StartsWith("&"))
{
parameters.block = NODE_LINENO(new SymNode(name), token);
}
else
{
parameters.Push(NODE_LINENO(new SymNode(name), token));
}
if (!TryParseToken(TokenType.Separator, ","))
{
break;
}
}
if (inparentheses)
{
ParseToken(TokenType.Separator, ")");
}
return(parameters);
}
public virtual void Exit(ArgsNode argsNode)
{
}
public InvocationExpression(Expression target, ArgsNode arguments, TextSpan textSpan, FileNode fileNode)
: base(textSpan, fileNode)
{
Target = target;
Arguments = arguments;
}
public ObjectCreateExpression()
{
Arguments = new ArgsNode();
}
public virtual void Enter(ArgsNode argsNode)
{
}
public UstNode VisitExpression(JavaParser.ExpressionContext context)
{
var textSpan = context.GetTextSpan();
var child0Terminal = context.GetChild(0) as ITerminalNode;
Expression target;
Expression result;
if (child0Terminal != null)
{
switch (child0Terminal.Symbol.Type)
{
case JavaParser.NEW:
result = (Expression)Visit(context.creator());
return(result);
case JavaParser.LPAREN: // '(' type ')' expression
var type = (TypeToken)Visit(context.typeType());
target = (Expression)Visit(context.expression(0));
result = new CastExpression(type, target, textSpan, FileNode);
return(result);
default: // unary operator ('+', '-', '++', '--', '~', '!')
UnaryOperator op = UnaryOperatorLiteral.PrefixTextUnaryOperator[child0Terminal.GetText()];
var opLiteral = new UnaryOperatorLiteral(op, child0Terminal.GetTextSpan(), FileNode);
target = (Expression)Visit(context.expression(0));
result = new UnaryOperatorExpression(opLiteral, target, textSpan, FileNode);
return(result);
}
}
ArgsNode args;
var child1Terminal = context.GetChild(1) as ITerminalNode;
if (child1Terminal != null)
{
switch (child1Terminal.Symbol.Type)
{
case JavaParser.DOT: // '.'
target = (Expression)Visit(context.expression(0));
var id = context.IDENTIFIER();
if (id != null)
{
result = new MemberReferenceExpression(target, (IdToken)Visit(id), textSpan, FileNode);
return(result);
}
var explicitGenericInvocation = context.explicitGenericInvocation();
if (explicitGenericInvocation != null)
{
return(VisitChildren(context).ToExpressionIfRequired());
}
var child2Terminal = context.GetChild <ITerminalNode>(1);
// TODO: implement
switch (child2Terminal.Symbol.Type)
{
case JavaParser.THIS:
break;
case JavaParser.NEW:
break;
case JavaParser.SUPER:
break;
}
break;
case JavaParser.LBRACK: // '['
target = (Expression)Visit(context.expression(0));
Expression expr = (Expression)Visit(context.expression(1));
args = new ArgsNode(new Expression[] { expr }, expr.TextSpan, FileNode);
result = new IndexerExpression(target, args, textSpan, FileNode);
return(result);
case JavaParser.LPAREN: // '('
target = (Expression)Visit(context.expression(0));
// TODO: fix with ArgsNode
JavaParser.ExpressionListContext expressionList = context.expressionList();
if (expressionList != null)
{
args = (ArgsNode)Visit(expressionList);
}
else
{
args = new ArgsNode();
}
result = new InvocationExpression(target, args, textSpan, FileNode);
return(result);
case JavaParser.INSTANCEOF: // x instanceof y -> (y)x != null
var expression = (Expression)Visit(context.expression(0));
var type = (TypeToken)Visit(context.typeType());
result = new BinaryOperatorExpression
{
Left = new CastExpression(type, expression, context.GetTextSpan(), FileNode),
Operator = new BinaryOperatorLiteral(BinaryOperator.NotEqual, default(TextSpan), FileNode),
Right = new NullLiteral(default(TextSpan), FileNode),
TextSpan = context.GetTextSpan(),
FileNode = FileNode
};
return(result);
case JavaParser.QUESTION: // '?'
var condition = (Expression)Visit(context.expression(0));
var trueExpr = (Expression)Visit(context.expression(1));
var falseExpr = (Expression)Visit(context.expression(2));
result = new ConditionalExpression(condition, trueExpr, falseExpr, textSpan, FileNode);
return(result);
default: // binary operator
string text = child1Terminal.GetText();
var left = (Expression)Visit(context.expression(0));
JavaParser.ExpressionContext expr1 = context.expression(1);
if (expr1 != null)
{
var right = (Expression)Visit(expr1);
if (text == "=")
{
result = new AssignmentExpression(left, right, textSpan, FileNode);
}
else if (BinaryOperatorLiteral.TextBinaryAssignmentOperator.Contains(text))
{
BinaryOperator op;
if (text == ">>>=")
{
op = BinaryOperator.ShiftRight; // TODO: fix shift operator.
}
else
{
op = BinaryOperatorLiteral.TextBinaryOperator[text.Remove(text.Length - 1)];
}
result = ConverterHelper.ConvertToAssignmentExpression(left, op, child1Terminal.GetTextSpan(), right,
context.GetTextSpan(), FileNode);
}
else
{
BinaryOperator op;
if (text == ">>>")
{
op = BinaryOperator.ShiftRight; // TODO: fix shift operator.
}
else
{
op = BinaryOperatorLiteral.TextBinaryOperator[text];
}
var opLiteral = new BinaryOperatorLiteral(op, child1Terminal.GetTextSpan(), FileNode);
result = new BinaryOperatorExpression(left, opLiteral, right, textSpan, FileNode);
}
}
else
{
// post increment or decrement.
UnaryOperator op = UnaryOperatorLiteral.PostfixTextUnaryOperator[text];
var opLiteral = new UnaryOperatorLiteral(op, child1Terminal.GetTextSpan(), FileNode);
result = new UnaryOperatorExpression(opLiteral, left, textSpan, FileNode);
return(result);
}
return(result);
}
}
return(Visit(context.GetChild(0)));
}
public ObjectCreateExpression(Token type, ArgsNode args, TextSpan textSpan, FileNode fileNode)
: base(textSpan, fileNode)
{
Type = type;
Arguments = args;
}
public virtual UstNode Visit(ArgsNode argsNode)
{
return(VisitChildren(argsNode));
}
public override UstNode VisitElementBindingExpression(ElementBindingExpressionSyntax node)
{
ArgsNode args = node.ArgumentList == null ? null : (ArgsNode)VisitBracketedArgumentList(node.ArgumentList);
return(args);
}