public void Visit(SelectAll all)
{
all.Parent.Parent.Children.Remove(all.Parent);
var tableMatches = Scope.Current.FindAll();
if (tableMatches.Length == 0) //only has a dynamic object and we can't tell the property names till runtime. Compile error.
{
Errors.Add(new SelectNoColumnsFound(new Semantic.LineInfo(all.Line.Line, all.Line.CharacterPosition)));
}
foreach (var match in tableMatches)
{
var tableReferance = new TableMemberReference {
Member = match.TableVariable.Variable,
RowReference = new TableVariableRowReference {
Id = match.TableAlias
},
Line = all.Line
};
var arg = new SelectArg();
arg.Children.Add(tableReferance);
all.Parent.Parent.Children.Add(arg);
}
}
public void Visit(TableMemberReference variable)
{
_codeStack.Peek().Scope = new ScopeData <Type> {
Type = typeof(string), CodeDomReference = new CodeTypeReference(typeof(string))
};
var rowArgs = VisitChild(variable.RowReference);
if (Scope.Current.IsTableRowRegistered(variable.RowReference.Id))
{
var descriptor = Scope.Current.GetTableDescriptor(variable.RowReference.Id);
if (!descriptor.Type.Variables.Any(x => x.Variable == variable.Member)) //error don't know member
{
Errors.Add(new NoTableMember(new Semantic.LineInfo(variable.Line.Line, variable.Line.CharacterPosition), variable.Member));
}
else
{
var member = descriptor.Type.Variables.Where(x => x.Variable == variable.Member).Single();
_codeStack.Peek().Scope = new ScopeData <Type> {
Type = member.Primitive.Type, CodeDomReference = new CodeTypeReference(member.Primitive.Type)
};
}
}
_codeStack.Peek()
.ParentStatements.Add(new CodeMethodInvokeExpression(new CodeTypeReferenceExpression("result"),
"AddColumn",
new CodePrimitiveExpression(variable.Member)));
var expression = new CodeFieldReferenceExpression(rowArgs.CodeExpression, variable.Member);
_codeStack.Peek().CodeExpression = expression;
}
public void Visit(TableMemberReference variable, CommonTree tree)
{
Parent(tree).Children.Add(variable);
variable.RowReference = new TableVariableRowReference()
{
Id = tree.GetChild(0).Text, Parent = variable
};
SetLine(variable.RowReference, tree.GetChild(0));
variable.Member = tree.GetChild(1).Text;
SetLine(variable, tree.GetChild(1));
}
public void Visit(TableMemberReference variable)
{
var selectInfo = new SelectArgsInfo();
_codeStack.Peek().Scope = new ScopeData <Type> {
Type = typeof(string), CodeDomReference = new CodeTypeReference(typeof(string))
};
var rowArgs = VisitChild(variable.RowReference);
var expression = new CodeFieldReferenceExpression(rowArgs.CodeExpression, variable.Member);
_codeStack.Peek().CodeExpression = expression;
if (Scope.Current.IsTableRowRegistered(variable.RowReference.Id))
{
var descriptor = Scope.Current.GetTableDescriptor(variable.RowReference.Id);
var dynamicAlias = Scope.Current.AliasType <DynamicObject>();
if (dynamicAlias.Length > 0) //alias is a dynamic type so we get it from there
{
_codeStack.Peek().CodeExpression = new CodeIndexerExpression(rowArgs.CodeExpression, new CodePrimitiveExpression(variable.Member));
_codeStack.Peek().Scope = new ScopeData <Type> {
Type = typeof(string), CodeDomReference = new CodeTypeReference(typeof(string))
};
}
else if (!descriptor.Type.Variables.Any(x => x.Variable == variable.Member)) //error don't know member
{
Errors.Add(new NoTableMember(new Semantic.LineInfo(variable.Line.Line, variable.Line.CharacterPosition), variable.Member));
}
else
{
var members = descriptor.Type.Variables.Where(x => x.Variable == variable.Member).ToList();
if (members.Count > 1)
{
var selectMatches = members.Select(x => new SelectMatch()
{
TableVariable = x
}).ToArray();
Errors.Add(new AmbiguousSelectVariable(selectMatches, new Semantic.LineInfo(variable.Line.Line, variable.Line.CharacterPosition)));
}
else
{
var member = members.Single();
_codeStack.Peek().Scope = new ScopeData <Type> {
Type = member.Primitive.Type, CodeDomReference = new CodeTypeReference(member.Primitive.Type)
};
}
}
}
selectInfo.ColumnName = variable.Member;
_codeStack.Peek().Tag = selectInfo;
}
public void Visit(SelectAll all)
{
all.Parent.Parent.Children.Remove(all.Parent);
var tableMatches = Scope.Current.FindAll();
foreach (var match in tableMatches)
{
var tableReferance = new TableMemberReference {
Member = match.TableVariable.Variable,
RowReference = new TableVariableRowReference {
Id = match.TableAlias
}
};
var arg = new SelectArg();
arg.Children.Add(tableReferance);
all.Parent.Parent.Children.Add(arg);
}
}
public void Visit(SelectStatement statement)
{
using (Scope.PushSelect())
{
if (statement.From == null)
{
GenerateSelectOnly(statement);
return;
}
var fromDomArg = VisitChild(statement.From);
var rowType = fromDomArg.Scope.CodeDomReference.TypeArguments[0];
CodeMemberMethod method = new CodeMemberMethod();
method.Name = "Select_" + fromDomArg.MethodIdentifier;
method.Attributes = MemberAttributes.Private;
method.ReturnType = new CodeTypeReference("Table", new CodeTypeReference("ResultRow"));
GenerateCallStatement(method.Statements, statement.Line.Line);
_mainType.Type.Members.Add(method);
var methodStatements = new CodeStatementCollection();
methodStatements.Add(new CodeVariableDeclarationStatement(new CodeTypeReference("RuntimeTable", new CodeTypeReference("ResultRow")),
"result",
new CodeObjectCreateExpression(new CodeTypeReference("RuntimeTable", new CodeTypeReference("ResultRow")))));
var selectArgAssignments = new List <CodeAssignStatement>();
if (statement.Args.Length > 0) //visit first one in case select *
{
VisitChild(statement.Args[0], new CodeDomArg()
{
Scope = fromDomArg.Scope
});
}
var outerLoopNeeded = false;
//Needed for both
for (int x = 0; x < statement.Args.Length; x++) //select args
{
var domSelectArg = VisitChild(statement.Args[x], new CodeDomArg()
{
Scope = fromDomArg.Scope
});
if (((SelectArgsInfo)domSelectArg.Tag).IsPickStatement)
{
outerLoopNeeded = true;
}
var assignment = new CodeAssignStatement();
assignment.Left = new CodeIndexerExpression(new CodeTypeReferenceExpression("resultRow"), new CodeSnippetExpression(x.ToString()));
assignment.Right = domSelectArg.CodeExpression;
methodStatements.Add(new CodeMethodInvokeExpression(new CodeTypeReferenceExpression("result"), "AddColumn", new CodePrimitiveExpression(((SelectArgsInfo)domSelectArg.Tag).DisplayColumnName)));
selectArgAssignments.Add(assignment);
}
methodStatements.Add(new CodeVariableDeclarationStatement(fromDomArg.Scope.CodeDomReference,
"fromTable",
fromDomArg.CodeExpression));
if (statement.Where != null)
{
var domWhereArgs = VisitChild(statement.Where, new CodeDomArg()
{
Scope = fromDomArg.Scope
});
methodStatements.Add(new CodeAssignStatement(new CodeVariableReferenceExpression("fromTable"), domWhereArgs.CodeExpression));
}
//outside iterator
methodStatements.Add(new CodeVariableDeclarationStatement(new CodeTypeReference("IEnumerator", rowType),
"x",
new CodeMethodInvokeExpression(
new CodeMethodReferenceExpression(new CodeTypeReferenceExpression("fromTable"), "GetEnumerator",
null))));
//foreach loops
var outerLoop = new CodeIterationStatement();
outerLoop.InitStatement = new CodeSnippetStatement();
outerLoop.IncrementStatement = new CodeSnippetStatement();
outerLoop.TestExpression = new CodeMethodInvokeExpression(
new CodeMethodReferenceExpression(new CodeTypeReferenceExpression("x"), "MoveNext",
null));
outerLoop.Statements.Add(new CodeVariableDeclarationStatement(rowType,
"row",
new CodePropertyReferenceExpression(new CodeTypeReferenceExpression("x"), "Current")));
var codeLoop = outerLoop;
if (outerLoopNeeded)
{
var aliases = Scope.Current.AliasType <DownloadPage>();
CodeDomArg args = null;
if (aliases.Length == 0)
{
//register error we could't find a download table and we are trying to access pick statements.
//create fake codedomargs
args = new CodeDomArg()
{
CodeExpression = new CodePrimitiveExpression("DownloadTable")
};
}
else
{
var reference = new TableMemberReference()
{
Member = "nodes", RowReference = new TableVariableRowReference()
{
Id = aliases[0]
}
};
args = VisitChild(reference);
}
//Needed only for DownloadRow
outerLoop.Statements.Add(
new CodeVariableDeclarationStatement(
new CodeTypeReference("IEnumerator", new CodeTypeReference("HtmlElement")),
"y",
new CodeMethodInvokeExpression(
new CodeMethodReferenceExpression(
args.CodeExpression, "GetEnumerator", null))));
//Needed only for DownloadRow
codeLoop = new CodeIterationStatement();
codeLoop.InitStatement = new CodeSnippetStatement();
codeLoop.IncrementStatement = new CodeSnippetStatement();
codeLoop.TestExpression = new CodeMethodInvokeExpression(
new CodeMethodReferenceExpression(new CodeTypeReferenceExpression("y"), "MoveNext",
null));
//Needed only for DownloadRow
codeLoop.Statements.Add(new CodeVariableDeclarationStatement(
new CodeTypeReference("HtmlElement"),
"node",
new CodePropertyReferenceExpression(new CodeTypeReferenceExpression("y"), "Current")));
outerLoop.Statements.Add(codeLoop);
}
//Needed for both.
codeLoop.Statements.Add(new CodeVariableDeclarationStatement(
new CodeTypeReference("ResultRow"),
"resultRow",
new CodeObjectCreateExpression(new CodeTypeReference("ResultRow"), new CodeSnippetExpression(statement.Args.Length.ToString()))));
codeLoop.Statements.AddRange(selectArgAssignments.ToArray());
var addResults = new CodeMethodInvokeExpression(
new CodeMethodReferenceExpression(new CodeTypeReferenceExpression("result"), "Add"),
new CodeArgumentReferenceExpression("resultRow"));
codeLoop.Statements.Add(addResults);
methodStatements.Add(outerLoop);
if (outerLoopNeeded)
{
var aliases = Scope.Current.AliasType <DownloadPage>();
outerLoop.Statements.Add(new CodeMethodInvokeExpression(new CodePropertyReferenceExpression(new CodeVariableReferenceExpression("row"), aliases[0]), "Clear"));
}
var callSelect = new CodeExpressionStatement(new CodeMethodInvokeExpression(null, "OnSelect", new CodeVariableReferenceExpression("result")));
methodStatements.Add(callSelect);
methodStatements.Add(new CodeMethodReturnStatement(new CodeTypeReferenceExpression("result")));
method.Statements.AddRange(methodStatements);
var methodcall = new CodeMethodInvokeExpression(
new CodeMethodReferenceExpression(null, method.Name));
_codeStack.Peek().Tag = new Action(() => method.Statements.Remove(callSelect));
_codeStack.Peek().CodeExpression = methodcall;
_codeStack.Peek().Scope = new ScopeData <TableDescriptor>()
{
CodeDomReference = method.ReturnType
};
_codeStack.Peek().ParentStatements.Add(methodcall);
}
}
public void Visit(NestedSelectStatement statement)
{
BufferTable bufferTable;
CodeMemberMethod method = new CodeMemberMethod();
var methodStatements = new CodeStatementCollection();
var selectArgAssignments = new List <CodeAssignStatement>();
bool outerLoopNeeded;
if (statement.From == null)
{
SelectOnly(statement);
return;
}
using (Scope.PushSelect())
{
var fromDomArg = VisitChild(statement.From);
var rowType = fromDomArg.Scope.CodeDomReference.TypeArguments[0];
method.Name = "Nested_Select_" + fromDomArg.MethodIdentifier;
method.Attributes = MemberAttributes.Private;
GenerateCallStatement(method.Statements, statement.Line.Line);
_mainType.Type.Members.Add(method);
//create type
bufferTable = FetchBufferTable(statement, fromDomArg.Scope, selectArgAssignments, out outerLoopNeeded);
methodStatements.Add(new CodeVariableDeclarationStatement(new CodeTypeReference("CodeTable", new CodeTypeReference(bufferTable.Variable)),
"result",
new CodeObjectCreateExpression(new CodeTypeReference("BufferTable", new CodeTypeReference(bufferTable.Variable)))));
methodStatements.Add(new CodeVariableDeclarationStatement(fromDomArg.Scope.CodeDomReference,
"fromTable",
fromDomArg.CodeExpression));
if (statement.Where != null)
{
var domWhereArgs = VisitChild(statement.Where, new CodeDomArg()
{
Scope = fromDomArg.Scope
});
methodStatements.Add(new CodeAssignStatement(new CodeVariableReferenceExpression("fromTable"), domWhereArgs.CodeExpression));
}
//outside iterator
methodStatements.Add(new CodeVariableDeclarationStatement(new CodeTypeReference("IEnumerator", rowType),
"x",
new CodeMethodInvokeExpression(
new CodeMethodReferenceExpression(new CodeTypeReferenceExpression("fromTable"), "GetEnumerator",
null))));
//foreach loops
var outerLoop = new CodeIterationStatement();
outerLoop.InitStatement = new CodeSnippetStatement();
outerLoop.IncrementStatement = new CodeSnippetStatement();
outerLoop.TestExpression = new CodeMethodInvokeExpression(
new CodeMethodReferenceExpression(new CodeTypeReferenceExpression("x"), "MoveNext",
null));
outerLoop.Statements.Add(new CodeVariableDeclarationStatement(rowType,
"row",
new CodePropertyReferenceExpression(new CodeTypeReferenceExpression("x"), "Current")));
var codeLoop = outerLoop;
if (outerLoopNeeded)
{
var aliases = Scope.Current.AliasType <DownloadPage>();
CodeDomArg args = null;
if (aliases.Length == 0)
{
//register error we could't find a download table and we are trying to access pick statements.
//create fake codedomargs
args = new CodeDomArg()
{
CodeExpression = new CodePrimitiveExpression("DownloadTable")
};
}
else
{
var reference = new TableMemberReference()
{
Member = "nodes", RowReference = new TableVariableRowReference()
{
Id = aliases[0]
}
};
args = VisitChild(reference);
}
//Needed only for DownloadRow
outerLoop.Statements.Add(
new CodeVariableDeclarationStatement(
new CodeTypeReference("IEnumerator", new CodeTypeReference("HtmlElement")),
"y",
new CodeMethodInvokeExpression(
new CodeMethodReferenceExpression(
args.CodeExpression, "GetEnumerator", null))));
//Needed only for DownloadRow
codeLoop = new CodeIterationStatement();
codeLoop.InitStatement = new CodeSnippetStatement();
codeLoop.IncrementStatement = new CodeSnippetStatement();
codeLoop.TestExpression = new CodeMethodInvokeExpression(
new CodeMethodReferenceExpression(new CodeTypeReferenceExpression("y"), "MoveNext",
null));
//Needed only for DownloadRow
codeLoop.Statements.Add(new CodeVariableDeclarationStatement(
new CodeTypeReference("HtmlElement"),
"node",
new CodePropertyReferenceExpression(new CodeTypeReferenceExpression("y"), "Current")));
outerLoop.Statements.Add(codeLoop);
}
//Needed for both.
codeLoop.Statements.Add(new CodeVariableDeclarationStatement(
new CodeTypeReference(bufferTable.Variable),
"resultRow",
new CodeObjectCreateExpression(new CodeTypeReference(bufferTable.Variable))));
codeLoop.Statements.AddRange(selectArgAssignments.ToArray());
var addResults = new CodeMethodInvokeExpression(
new CodeMethodReferenceExpression(new CodeTypeReferenceExpression("result"), "Add"),
new CodeArgumentReferenceExpression("resultRow"));
codeLoop.Statements.Add(addResults);
methodStatements.Add(outerLoop);
if (outerLoopNeeded)
{
var aliases = Scope.Current.AliasType <DownloadPage>();
outerLoop.Statements.Add(new CodeMethodInvokeExpression(new CodePropertyReferenceExpression(new CodeVariableReferenceExpression("row"), aliases[0]), "Clear"));
}
}
var scope = CreateBufferTable(bufferTable);
method.ReturnType = scope.CodeDomReference;
var methodcall = new CodeMethodInvokeExpression(
new CodeMethodReferenceExpression(null, method.Name));
methodStatements.Add(new CodeMethodReturnStatement(new CodeTypeReferenceExpression("result")));
method.Statements.AddRange(methodStatements);
_codeStack.Peek().CodeExpression = methodcall;
_codeStack.Peek().Scope = new ScopeData <TableDescriptor>()
{
CodeDomReference = method.ReturnType
};
}
