protected override BoundExpression BindRangeVariable(SimpleNameSyntax node, RangeVariableSymbol qv, DiagnosticBag diagnostics)
{
Debug.Assert(!qv.IsTransparent);
BoundExpression translation;
ImmutableArray<string> path;
if (_rangeVariableMap.TryGetValue(qv, out path))
{
if (path.IsEmpty)
{
// the range variable maps directly to a use of the parameter of that name
var value = base.parameterMap[qv.Name];
Debug.Assert(value.Count == 1);
translation = new BoundParameter(node, value.Single()) { WasCompilerGenerated = true };
}
else
{
// if the query variable map for this variable is non empty, we always start with the current
// lambda's first parameter, which is a transparent identifier.
Debug.Assert(base.lambdaSymbol.Parameters[0].Name.StartsWith(transparentIdentifierPrefix));
translation = new BoundParameter(node, base.lambdaSymbol.Parameters[0]) { WasCompilerGenerated = true };
for (int i = path.Length - 1; i >= 0; i--)
{
var nextField = path[i];
translation = SelectField(node, translation, nextField, diagnostics);
translation.WasCompilerGenerated = true;
}
}
return new BoundRangeVariable(node, qv, translation, translation.Type);
}
return base.BindRangeVariable(node, qv, diagnostics);
}
internal RangeVariableSymbol AddRangeVariable(Binder binder, SyntaxToken identifier, DiagnosticBag diagnostics)
{
string name = identifier.ValueText;
var result = new RangeVariableSymbol(name, binder.ContainingMemberOrLambda, identifier.GetLocation());
bool error = false;
foreach (var existingRangeVariable in allRangeVariables.Keys)
{
#if XSHARP
if (XSharpString.Equals(existingRangeVariable.Name, name))
#else
if (existingRangeVariable.Name == name)
#endif
{
diagnostics.Add(ErrorCode.ERR_QueryDuplicateRangeVariable, identifier.GetLocation(), name);
error = true;
}
}
if (!error)
{
var collisionDetector = new LocalScopeBinder(binder);
collisionDetector.ValidateDeclarationNameConflictsInScope(result, diagnostics);
}
allRangeVariables.Add(result, ArrayBuilder <string> .GetInstance());
return(result);
}
private UnboundLambda MakeQueryUnboundLambdaWithCast(RangeVariableMap qvm, RangeVariableSymbol parameter, ExpressionSyntax expression, TypeSyntax castTypeSyntax, TypeSymbol castType)
{
return(MakeQueryUnboundLambda(expression, new QueryUnboundLambdaState(this, qvm, ImmutableArray.Create(parameter), (LambdaSymbol lambdaSymbol, ref Binder lambdaBodyBinder, DiagnosticBag diagnostics) =>
{
BoundExpression boundExpression = lambdaBodyBinder.BindValue(expression, diagnostics, BindValueKind.RValue);
// We transform the expression from "expr" to "expr.Cast<castTypeOpt>()".
boundExpression = lambdaBodyBinder.MakeQueryInvocation(expression, boundExpression, "Cast", castTypeSyntax, castType, diagnostics);
return lambdaBodyBinder.CreateBlockFromExpression(expression, lambdaBodyBinder.Locals, expression, boundExpression, diagnostics);
})));
}
public void Clear()
{
fromExpression = null;
rangeVariable = null;
selectOrGroup = null;
foreach (var b in allRangeVariables.Values)
{
b.Free();
}
allRangeVariables.Clear();
clauses.Clear();
}
private UnboundLambda MakeQueryUnboundLambdaWithCast(RangeVariableMap qvm, RangeVariableSymbol parameter, ExpressionSyntax expression, TypeSyntax castTypeSyntax, TypeWithAnnotations castType)
{
return(MakeQueryUnboundLambda(expression, new QueryUnboundLambdaState(this, qvm, ImmutableArray.Create(parameter), (LambdaSymbol lambdaSymbol, Binder lambdaBodyBinder, DiagnosticBag diagnostics) =>
{
lambdaBodyBinder = lambdaBodyBinder.GetBinder(expression);
Debug.Assert(lambdaBodyBinder != null);
BoundExpression boundExpression = lambdaBodyBinder.BindValue(expression, diagnostics, BindValueKind.RValue);
// We transform the expression from "expr" to "expr.Cast<castTypeOpt>()".
boundExpression = lambdaBodyBinder.MakeQueryInvocation(expression, boundExpression, "Cast", castTypeSyntax, castType, diagnostics);
return lambdaBodyBinder.CreateLambdaBlockForQueryClause(expression, boundExpression, diagnostics);
})));
}
public BoundQueryClause(
SyntaxNode syntax,
BoundExpression value,
RangeVariableSymbol definedSymbol,
BoundExpression queryInvocation,
BoundExpression castInvocation,
Binder binder,
BoundExpression unoptimizedForm,
TypeSymbol type,
bool hasErrors = false)
: this(syntax, value, definedSymbol, binder, type, hasErrors)
{
this.Operation = queryInvocation;
this.Cast = castInvocation;
this.UnoptimizedForm = unoptimizedForm;
}
public BoundQueryClause(
CSharpSyntaxNode syntax,
BoundExpression value,
RangeVariableSymbol definedSymbol,
BoundExpression queryInvocation,
BoundExpression castInvocation,
Binder binder,
BoundExpression unoptimizedForm,
TypeSymbol type,
bool hasErrors = false)
: this(syntax, value, definedSymbol, binder, type, hasErrors)
{
this.Operation = queryInvocation;
this.Cast = castInvocation;
this.UnoptimizedForm = unoptimizedForm;
}
public BoundQueryClause Update(
BoundExpression value,
RangeVariableSymbol definedSymbol,
BoundExpression queryInvocation,
BoundExpression castInvocation,
Binder binder,
BoundExpression unoptimizedForm,
TypeSymbol type)
{
if (value != this.Value || definedSymbol != this.DefinedSymbol || queryInvocation != this.Operation || castInvocation != this.Cast || binder != this.Binder || unoptimizedForm != this.UnoptimizedForm || type != this.Type)
{
var result = new BoundQueryClause(this.Syntax, value, definedSymbol, queryInvocation, castInvocation, binder, unoptimizedForm, type, this.HasErrors);
result.WasCompilerGenerated = this.WasCompilerGenerated;
return(result);
}
return(this);
}
public BoundQueryClause Update(
BoundExpression value,
RangeVariableSymbol definedSymbol,
BoundExpression queryInvocation,
BoundExpression castInvocation,
Binder binder,
BoundExpression unoptimizedForm,
TypeSymbol type)
{
if (value != this.Value || definedSymbol != this.DefinedSymbol || queryInvocation != this.Operation || castInvocation != this.Cast || binder != this.Binder || unoptimizedForm != this.UnoptimizedForm || type != this.Type)
{
var result = new BoundQueryClause(this.Syntax, value, definedSymbol, queryInvocation, castInvocation, binder, unoptimizedForm, type, this.HasErrors);
result.WasCompilerGenerated = this.WasCompilerGenerated;
return result;
}
return this;
}
protected override BoundExpression BindRangeVariable(
SimpleNameSyntax node,
RangeVariableSymbol qv,
BindingDiagnosticBag diagnostics
)
{
Debug.Assert(!qv.IsTransparent);
BoundExpression translation;
ImmutableArray <string> path;
if (_rangeVariableMap.TryGetValue(qv, out path))
{
if (path.IsEmpty)
{
// the range variable maps directly to a use of the parameter of that name
var value = base.parameterMap[qv.Name];
Debug.Assert(value.Count == 1);
translation = new BoundParameter(node, value.Single());
}
else
{
// if the query variable map for this variable is non empty, we always start with the current
// lambda's first parameter, which is a transparent identifier.
Debug.Assert(
base.lambdaSymbol.Parameters[0].Name.StartsWith(
transparentIdentifierPrefix,
StringComparison.Ordinal
)
);
translation = new BoundParameter(node, base.lambdaSymbol.Parameters[0]);
for (int i = path.Length - 1; i >= 0; i--)
{
translation.WasCompilerGenerated = true;
var nextField = path[i];
translation = SelectField(node, translation, nextField, diagnostics);
}
}
return(new BoundRangeVariable(node, qv, translation, translation.Type));
}
return(base.BindRangeVariable(node, qv, diagnostics));
}
private BoundQueryClause MakeQueryClause(
CSharpSyntaxNode syntax,
BoundExpression expression,
RangeVariableSymbol definedSymbol = null,
BoundExpression queryInvocation = null,
BoundExpression castInvocation = null,
BoundExpression unoptimizedForm = null)
{
if (unoptimizedForm != null && unoptimizedForm.HasAnyErrors && !expression.HasAnyErrors)
{
unoptimizedForm = null;
}
return(new BoundQueryClause(
syntax: syntax, value: expression,
definedSymbol: definedSymbol,
queryInvocation: queryInvocation,
binder: this,
castInvocation: castInvocation, unoptimizedForm: unoptimizedForm,
type: TypeOrError(expression)));
}
internal RangeVariableSymbol AddRangeVariable(Binder binder, SyntaxToken identifier, DiagnosticBag diagnostics)
{
string name = identifier.ValueText;
var result = new RangeVariableSymbol(name, binder.ContainingMemberOrLambda, identifier.GetLocation());
bool error = false;
foreach (var existingRangeVariable in allRangeVariables.Keys)
{
if (existingRangeVariable.Name == name)
{
diagnostics.Add(ErrorCode.ERR_QueryDuplicateRangeVariable, identifier.GetLocation(), name);
error = true;
}
}
if (!error)
{
var collisionDetector = new LocalScopeBinder(binder);
collisionDetector.ValidateDeclarationNameConflictsInScope(result, diagnostics);
}
allRangeVariables.Add(result, ArrayBuilder<string>.GetInstance());
return result;
}
public virtual void VisitRangeVariable(RangeVariableSymbol symbol)
{
DefaultVisit(symbol);
}
private UnboundLambda MakeQueryUnboundLambdaWithCast(RangeVariableMap qvm, RangeVariableSymbol parameter, ExpressionSyntax expression, TypeSyntax castTypeSyntax, TypeSymbol castType)
{
return MakeQueryUnboundLambda(expression, new QueryUnboundLambdaState(this, qvm, ImmutableArray.Create(parameter), (LambdaSymbol lambdaSymbol, Binder lambdaBodyBinder, DiagnosticBag diagnostics) =>
{
lambdaBodyBinder = lambdaBodyBinder.GetBinder(expression);
Debug.Assert(lambdaBodyBinder != null);
BoundExpression boundExpression = lambdaBodyBinder.BindValue(expression, diagnostics, BindValueKind.RValue);
// We transform the expression from "expr" to "expr.Cast<castTypeOpt>()".
boundExpression = lambdaBodyBinder.MakeQueryInvocation(expression, boundExpression, "Cast", castTypeSyntax, castType, diagnostics);
return lambdaBodyBinder.CreateBlockFromExpression(expression, lambdaBodyBinder.GetDeclaredLocalsForScope(expression), RefKind.None, boundExpression, expression, diagnostics);
}));
}
public void Clear()
{
fromExpression = null;
rangeVariable = null;
selectOrGroup = null;
foreach (var b in allRangeVariables.Values) b.Free();
allRangeVariables.Clear();
clauses.Clear();
}
UnboundLambda MakeQueryUnboundLambda(RangeVariableMap qvm, RangeVariableSymbol parameter, CSharpSyntaxNode node, LambdaBodyResolver resolver)
{
return(MakeQueryUnboundLambda(qvm, Args(parameter), node, resolver));
}
UnboundLambda MakeQueryUnboundLambda(RangeVariableMap qvm, RangeVariableSymbol parameter, ExpressionSyntax expression, TypeSyntax castTypeSyntaxOpt, TypeSymbol castTypeOpt)
{
return(MakeQueryUnboundLambda(qvm, Args(parameter), expression, castTypeSyntaxOpt, castTypeOpt));
}
private UnboundLambda MakePairLambda(CSharpSyntaxNode node, QueryTranslationState state, RangeVariableSymbol x1, RangeVariableSymbol x2)
{
Debug.Assert(LambdaUtilities.IsQueryPairLambda(node));
LambdaBodyFactory bodyFactory = (LambdaSymbol lambdaSymbol, Binder lambdaBodyBinder, DiagnosticBag d) =>
{
var x1Expression = new BoundParameter(node, lambdaSymbol.Parameters[0]) { WasCompilerGenerated = true };
var x2Expression = new BoundParameter(node, lambdaSymbol.Parameters[1]) { WasCompilerGenerated = true };
var construction = MakePair(node, x1.Name, x1Expression, x2.Name, x2Expression, state, d);
return lambdaBodyBinder.CreateBlockFromExpression(node, ImmutableArray<LocalSymbol>.Empty, RefKind.None, construction, null, d);
};
var result = MakeQueryUnboundLambda(state.RangeVariableMap(), ImmutableArray.Create(x1, x2), node, bodyFactory);
state.rangeVariable = state.TransparentRangeVariable(this);
state.AddTransparentIdentifier(x1.Name);
var x2m = state.allRangeVariables[x2];
x2m[x2m.Count - 1] = x2.Name;
return result;
}
private UnboundLambda MakeQueryUnboundLambda(RangeVariableMap qvm, RangeVariableSymbol parameter, ExpressionSyntax expression)
{
return MakeQueryUnboundLambda(qvm, ImmutableArray.Create(parameter), expression);
}
public virtual TResult VisitRangeVariable(RangeVariableSymbol symbol)
{
return(DefaultVisit(symbol));
}
public virtual TResult VisitRangeVariable(RangeVariableSymbol symbol, TArgument argument)
{
return(DefaultVisit(symbol, argument));
}
private BoundQueryClause MakeQueryClause(
CSharpSyntaxNode syntax,
BoundExpression expression,
RangeVariableSymbol definedSymbol = null,
BoundExpression queryInvocation = null,
BoundExpression castInvocation = null,
BoundExpression unoptimizedForm = null)
{
if (unoptimizedForm != null && unoptimizedForm.HasAnyErrors && !expression.HasAnyErrors) unoptimizedForm = null;
return new BoundQueryClause(
syntax: syntax, value: expression,
definedSymbol: definedSymbol,
queryInvocation: queryInvocation,
binder: this,
castInvocation: castInvocation, unoptimizedForm: unoptimizedForm,
type: TypeOrError(expression));
}
private UnboundLambda MakePairLambda(CSharpSyntaxNode node, QueryTranslationState state, RangeVariableSymbol x1, RangeVariableSymbol x2)
{
Debug.Assert(LambdaUtilities.IsQueryPairLambda(node));
LambdaBodyFactory bodyFactory = (LambdaSymbol lambdaSymbol, Binder lambdaBodyBinder, DiagnosticBag d) =>
{
var x1Expression = new BoundParameter(node, lambdaSymbol.Parameters[0])
{
WasCompilerGenerated = true
};
var x2Expression = new BoundParameter(node, lambdaSymbol.Parameters[1])
{
WasCompilerGenerated = true
};
var construction = MakePair(node, x1.Name, x1Expression, x2.Name, x2Expression, state, d);
return(lambdaBodyBinder.CreateBlockFromExpression(node, ImmutableArray <LocalSymbol> .Empty, RefKind.None, construction, null, d));
};
var result = MakeQueryUnboundLambda(state.RangeVariableMap(), ImmutableArray.Create(x1, x2), node, bodyFactory);
state.rangeVariable = state.TransparentRangeVariable(this);
state.AddTransparentIdentifier(x1.Name);
var x2m = state.allRangeVariables[x2];
x2m[x2m.Count - 1] = x2.Name;
return(result);
}
UnboundLambda MakePairLambda(CSharpSyntaxNode node, QueryTranslationState state, RangeVariableSymbol x1, RangeVariableSymbol x2)
{
LambdaBodyResolver resolver = (LambdaSymbol lambdaSymbol, ref Binder lambdaBodyBinder, DiagnosticBag d) =>
{
var x1Expression = new BoundParameter(node, lambdaSymbol.Parameters[0])
{
WasCompilerGenerated = true
};
var x2Expression = new BoundParameter(node, lambdaSymbol.Parameters[1])
{
WasCompilerGenerated = true
};
var construction = MakePair(node, x1.Name, x1Expression, x2.Name, x2Expression, state, d);
return(lambdaBodyBinder.CreateBlockFromExpression(ImmutableArray <LocalSymbol> .Empty, construction, node, d));
};
var result = MakeQueryUnboundLambda(state.RangeVariableMap(), Args(x1, x2), node, resolver);
state.rangeVariable = state.TransparentRangeVariable(this);
state.AddTransparentIdentifier(x1.Name);
var x2m = state.allRangeVariables[x2];
x2m[x2m.Count - 1] = x2.Name;
return(result);
}
private UnboundLambda MakeQueryUnboundLambda(RangeVariableMap qvm, RangeVariableSymbol parameter, ExpressionSyntax expression)
{
return(MakeQueryUnboundLambda(qvm, ImmutableArray.Create(parameter), expression));
}
UnboundLambda MakeQueryUnboundLambda(RangeVariableMap qvm, RangeVariableSymbol parameter, ExpressionSyntax expression)
{
return(MakeQueryUnboundLambda(qvm, Args(parameter), expression));
}