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Copy pathTryStatementVisitor.cs
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82 lines (68 loc) · 3.08 KB
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using com.github.javaparser.ast.stmt;
using com.github.javaparser.ast.type;
using Microsoft.CodeAnalysis.CSharp;
using Microsoft.CodeAnalysis.CSharp.Syntax;
namespace JavaToCSharp.Statements
{
public class TryStatementVisitor : StatementVisitor<TryStmt>
{
public override StatementSyntax Visit(ConversionContext context, TryStmt tryStmt)
{
var tryBlock = tryStmt.getTryBlock();
var tryStatements = tryBlock.getStmts().ToList<Statement>();
var tryConverted = VisitStatements(context, tryStatements);
var catches = tryStmt.getCatchs().ToList<CatchClause>();
var trySyn = SyntaxFactory.TryStatement()
.AddBlockStatements(tryConverted.ToArray());
if (catches != null)
{
foreach (var catchClause in catches)
{
var paramType = catchClause.getParam().getType();
if (paramType is UnionType)
{
var nodes = paramType.getChildrenNodes();
foreach (var node in nodes.ToList<ReferenceType>())
{
var referenceTypeName = node.getType().ToString();
trySyn = AddCatches(context, catchClause, referenceTypeName, trySyn);
}
}
else
{
var referenceType = (ReferenceType)catchClause.getParam().getType();
trySyn = AddCatches(context, catchClause, referenceType.getType().ToString(), trySyn);
}
}
}
var finallyBlock = tryStmt.getFinallyBlock();
if (finallyBlock == null)
return trySyn;
var finallyStatements = finallyBlock.getStmts().ToList<Statement>();
var finallyConverted = VisitStatements(context, finallyStatements);
var finallyBlockSyntax = SyntaxFactory.Block(finallyConverted);
trySyn = trySyn.WithFinally(SyntaxFactory.FinallyClause(finallyBlockSyntax));
return trySyn;
}
private static TryStatementSyntax AddCatches(ConversionContext context, CatchClause ctch,
string typeName, TryStatementSyntax trySyn)
{
var block = ctch.getCatchBlock();
var catchStatements = block.getStmts().ToList<Statement>();
var catchConverted = VisitStatements(context, catchStatements);
var catchBlockSyntax = SyntaxFactory.Block(catchConverted);
var type = TypeHelper.ConvertType(typeName);
trySyn = trySyn.AddCatches(
SyntaxFactory.CatchClause(
SyntaxFactory.CatchDeclaration(
SyntaxFactory.ParseTypeName(type),
SyntaxFactory.ParseToken(ctch.getParam().getId().toString())
),
filter: null,
block: catchBlockSyntax
)
);
return trySyn;
}
}
}