public Ust VisitStatement(JavaParser.StatementContext context)
{
var textSpan = context.GetTextSpan();
Statement result;
Expression expression;
Statement statement;
List <Statement> statements;
if (context.blockLabel != null)
{
result = (Statement)Visit(context.blockLabel);
return(result);
}
if (context.statementExpression != null)
{
result = Visit(context.statementExpression).ToStatementIfRequired();
return(result);
}
if (context.identifierLabel != null)
{
var defaultResult = VisitChildren(context);
return(new WrapperStatement(defaultResult, textSpan));
}
int firstTokenType = context.GetChild <ITerminalNode>(0).Symbol.Type;
if (firstTokenType == JavaLexer.ASSERT)
{
var defaultResult = VisitChildren(context);
return(new WrapperStatement(defaultResult, textSpan));
}
if (firstTokenType == JavaLexer.IF)
{
var condition = (Expression)Visit(context.parExpression());
var trueStatement = (Statement)Visit(context.statement(0));
var falseStatment = context.ELSE() == null
? null
: (Statement)Visit(context.statement(1));
result = new IfElseStatement(condition, trueStatement, textSpan)
{
FalseStatement = falseStatment
};
return(result);
}
if (firstTokenType == JavaLexer.FOR)
{
result = (Statement)Visit(context.forControl());
return(result);
}
if (firstTokenType == JavaLexer.WHILE)
{
var conditionWhile = (Expression)Visit(context.parExpression());
statement = (Statement)Visit(context.statement(0));
result = new WhileStatement(conditionWhile, statement, textSpan);
return(result);
}
if (firstTokenType == JavaLexer.DO)
{
statement = (Statement)Visit(context.statement(0));
expression = (Expression)Visit(context.parExpression());
result = new DoWhileStatement(statement, expression, textSpan);
return(result);
}
if (firstTokenType == JavaLexer.TRY)
{
// TODO: implement 'try' resourceSpecification block catchClause* finallyBlock? (C# using)
var block = (BlockStatement)Visit(context.block());
JavaParser.ResourceSpecificationContext resSpec = context.resourceSpecification();
List <CatchClause> catchClauses = context.catchClause()
?.Select(cc => (CatchClause)Visit(cc))
.Where(cc => cc != null).ToList();
var finallyBlock = context.finallyBlock() == null ? null
: (BlockStatement)Visit(context.finallyBlock());
if (resSpec == null)
{
result = new TryCatchStatement(block, textSpan)
{
CatchClauses = catchClauses,
FinallyBlock = finallyBlock
};
}
else
{
// C# using conversion to tryCatch
statements = new List <Statement>();
statements.AddRange(resSpec.resources().resource()
.Select(res =>
{
var e = (VariableDeclarationExpression)Visit(res);
return(e == null ? null : new ExpressionStatement(e));
})
.Where(res => res != null));
statements.AddRange(block.Statements);
var blockStatement = new BlockStatement(statements, context.GetTextSpan());
result = new TryCatchStatement(block, textSpan)
{
CatchClauses = catchClauses,
FinallyBlock = finallyBlock
};
}
return(result);
}
if (firstTokenType == JavaLexer.SWITCH)
{
expression = (Expression)Visit(context.parExpression());
SwitchSection[] switchSections = context.switchBlockStatementGroup()
.Select(group => (SwitchSection)Visit(group))
.Where(group => group != null).ToArray();
result = new SwitchStatement(expression, switchSections, textSpan);
return(result);
}
if (firstTokenType == JavaLexer.SYNCHRONIZED) // synchronized(a) { b; c; } => { a; b; c; }
{
var resultStatements = new List <Statement>();
expression = (Expression)Visit(context.parExpression());
statements = context.block().blockStatement()
.Select(s => (Statement)Visit(s))
.Where(s => s != null).ToList();
resultStatements.Add(new ExpressionStatement(expression, expression.TextSpan));
resultStatements.AddRange(statements);
result = new BlockStatement(resultStatements, textSpan);
return(result);
}
if (firstTokenType == JavaLexer.RETURN)
{
expression = context.expression(0) != null
? (Expression)Visit(context.expression(0))
: null;
result = new ReturnStatement(expression, textSpan);
return(result);
}
if (firstTokenType == JavaLexer.THROW)
{
expression = (Expression)Visit(context.expression(0));
result = new ThrowStatement(expression, textSpan);
return(result);
}
if (firstTokenType == JavaLexer.BREAK)
{
result = new BreakStatement(textSpan);
return(result);
}
if (firstTokenType == JavaLexer.CONTINUE)
{
result = new ContinueStatement(textSpan);
return(result);
}
if (firstTokenType == JavaLexer.SEMI)
{
result = new EmptyStatement(textSpan);
return(result);
}
return(VisitShouldNotBeVisited(context));
}
public Ust VisitResourceSpecification([NotNull] JavaParser.ResourceSpecificationContext context)
{
return(VisitChildren(context));
}