public UnsafeExpression(
TextSpan span,
DataType dataType,
ExpressionSemantics semantics,
IExpression expression)
: base(span, dataType, semantics)
{
Expression = expression;
}
protected ImplicitConversionExpression(
TextSpan span,
DataType dataType,
ExpressionSemantics semantics,
IExpression expression)
: base(span, dataType, semantics)
{
Expression = expression;
}
public NameExpression(
TextSpan span,
DataType dataType,
ExpressionSemantics semantics,
NamedBindingSymbol referencedSymbol)
: base(span, dataType, semantics)
{
ReferencedSymbol = referencedSymbol;
}
public LoopExpression(
TextSpan span,
DataType dataType,
ExpressionSemantics semantics,
IBlockExpression block)
: base(span, dataType, semantics)
{
Block = block;
}
public BreakExpression(
TextSpan span,
DataType dataType,
ExpressionSemantics semantics,
IExpression?value)
: base(span, dataType, semantics)
{
Value = value;
}
public BoolLiteralExpression(
TextSpan span,
DataType dataType,
ExpressionSemantics semantics,
bool value)
: base(span, dataType, semantics)
{
Value = value;
}
public IntegerLiteralExpression(
TextSpan span,
DataType dataType,
ExpressionSemantics semantics,
BigInteger value)
: base(span, dataType, semantics)
{
Value = value;
}
public StringLiteralExpression(
TextSpan span,
DataType dataType,
ExpressionSemantics semantics,
string value)
: base(span, dataType, semantics)
{
Value = value;
}
public BlockExpression(
TextSpan span,
DataType dataType,
ExpressionSemantics semantics,
FixedList <IStatement> statements)
: base(span, dataType, semantics)
{
Statements = statements;
}
public ImplicitImmutabilityConversion(
TextSpan span,
DataType dataType,
ExpressionSemantics semantics,
IExpression expression,
ObjectType convertToType)
: base(span, dataType, semantics, expression)
{
ConvertToType = convertToType;
}
public ImplicitNumericConversionExpression(
TextSpan span,
DataType dataType,
ExpressionSemantics semantics,
IExpression expression,
NumericType convertToType)
: base(span, dataType, semantics, expression)
{
ConvertToType = convertToType;
}
public FunctionInvocationExpression(
TextSpan span,
DataType dataType,
ExpressionSemantics semantics,
FunctionSymbol referencedSymbol,
FixedList <IExpression> arguments)
: base(span, dataType, semantics)
{
ReferencedSymbol = referencedSymbol;
Arguments = arguments;
}
public NewObjectExpression(
TextSpan span,
DataType dataType,
ExpressionSemantics semantics,
ConstructorSymbol referencedSymbol,
FixedList <IExpression> arguments)
: base(span, dataType, semantics)
{
ReferencedSymbol = referencedSymbol;
Arguments = arguments;
}
public WhileExpression(
TextSpan span,
DataType dataType,
ExpressionSemantics semantics,
IExpression condition,
IBlockExpression block)
: base(span, dataType, semantics)
{
Condition = condition;
Block = block;
}
public SelfExpression(
TextSpan span,
DataType dataType,
ExpressionSemantics semantics,
SelfParameterSymbol referencedSymbol,
bool isImplicit)
: base(span, dataType, semantics)
{
ReferencedSymbol = referencedSymbol;
IsImplicit = isImplicit;
}
public BorrowExpression(
TextSpan span,
DataType dataType,
ExpressionSemantics semantics,
BindingSymbol referencedSymbol,
IExpression referent)
: base(span, dataType, semantics)
{
ReferencedSymbol = referencedSymbol;
Referent = referent;
}
public IfExpression(
TextSpan span,
DataType dataType,
ExpressionSemantics semantics,
IExpression condition,
IBlockOrResult thenBlock,
IElseClause?elseClause)
: base(span, dataType, semantics)
{
Condition = condition;
ThenBlock = thenBlock;
ElseClause = elseClause;
}
public ForeachExpression(
TextSpan span,
DataType dataType,
ExpressionSemantics semantics,
VariableSymbol symbol,
IExpression inExpression,
IBlockExpression block)
: base(span, dataType, semantics)
{
Symbol = symbol;
InExpression = inExpression;
Block = block;
}
public AssignmentExpression(
TextSpan span,
DataType dataType,
ExpressionSemantics semantics,
IAssignableExpression leftOperand,
AssignmentOperator @operator,
IExpression rightOperand)
: base(span, dataType, semantics)
{
LeftOperand = leftOperand;
Operator = @operator;
RightOperand = rightOperand;
}
public UnaryOperatorExpression(
TextSpan span,
DataType dataType,
ExpressionSemantics semantics,
UnaryOperatorFixity fixity,
UnaryOperator @operator,
IExpression operand)
: base(span, dataType, semantics)
{
Fixity = fixity;
Operator = @operator;
Operand = operand;
}
public FieldAccessExpression(
TextSpan span,
DataType dataType,
ExpressionSemantics semantics,
IExpression context,
AccessOperator accessOperator,
FieldSymbol referencedSymbol)
: base(span, dataType, semantics)
{
Context = context;
AccessOperator = accessOperator;
ReferencedSymbol = referencedSymbol;
}
public BinaryOperatorExpression(
TextSpan span,
DataType dataType,
ExpressionSemantics semantics,
IExpression leftOperand,
BinaryOperator @operator,
IExpression rightOperand)
: base(span, dataType, semantics)
{
LeftOperand = leftOperand;
Operator = @operator;
RightOperand = rightOperand;
}
public MethodInvocationExpression(
TextSpan span,
DataType dataType,
ExpressionSemantics semantics,
IExpression context,
MethodSymbol referencedSymbol,
FixedList <IExpression> arguments)
: base(span, dataType, semantics)
{
Context = context;
ReferencedSymbol = referencedSymbol;
Arguments = arguments;
}
public P?TryGetP(ExpressionSemantics semantics, object?value, IGremlinQueryEnvironment environment)
{
if (value is string { Length : > 0 } str&& semantics is StringExpressionSemantics {
Comparison : StringComparison.OrdinalIgnoreCase
} stringExpressionSemantics)
{
switch (_indexConfiguration)
{
case NeptuneElasticSearchIndexConfiguration.Standard :
{
if (!str.Any(c => char.IsWhiteSpace(c))) //Can't do better. Insight welcome.
{
switch (stringExpressionSemantics)
{
// This will only work for property values that don't contain e.g. whitespace
// and would be tokenized as a complete string. As it is, a vertex property
// with value "John Doe" would match a query "StartsWith('Doe') which is
// not really what's expected. So we can't do better than a case-insensitive
// "Contains(..)"
case HasInfixExpressionSemantics :
return(new P("eq", $"Neptune#fts *{value}*"));
}
}
break;
}
case NeptuneElasticSearchIndexConfiguration.LowercaseKeyword:
{
str = str
.Replace(" ", @"\ ");
switch (stringExpressionSemantics)
{
case StartsWithExpressionSemantics:
return(new P("eq", $"Neptune#fts {str}*"));
case EndsWithExpressionSemantics:
return(new P("eq", $"Neptune#fts *{str}"));
case HasInfixExpressionSemantics:
return(new P("eq", $"Neptune#fts *{str}*"));
}
break;
}
}
}
return(default);
public GremlinExpression(ExpressionFragment left, ExpressionSemantics semantics, ExpressionFragment right)
{
if (!(left is ParameterExpressionFragment) && right is ParameterExpressionFragment)
{
Left = right;
Semantics = semantics.Flip();
Right = left;
}
else
{
Left = left;
Right = right;
Semantics = semantics;
}
}
public static string Action(this ExpressionSemantics valueSemantics)
{
string mutability = valueSemantics switch
{
ExpressionSemantics.Never => "never",
ExpressionSemantics.Void => "void",
ExpressionSemantics.Move => "move",
ExpressionSemantics.Copy => "copy",
ExpressionSemantics.Acquire => "own",
ExpressionSemantics.Borrow => "borrow",
ExpressionSemantics.Share => "share",
ExpressionSemantics.CreateReference => "ref",
_ => throw ExhaustiveMatch.Failed(valueSemantics),
};
return(mutability);
}
public static ExpressionSemantics Flip(this ExpressionSemantics semantics)
{
return(semantics switch
{
ExpressionSemantics.Contains => ExpressionSemantics.IsContainedIn,
ExpressionSemantics.StartsWith => ExpressionSemantics.IsPrefixOf,
ExpressionSemantics.EndsWith => ExpressionSemantics.IsSuffixOf,
ExpressionSemantics.HasInfix => ExpressionSemantics.IsInfixOf,
ExpressionSemantics.LowerThan => ExpressionSemantics.GreaterThan,
ExpressionSemantics.GreaterThan => ExpressionSemantics.LowerThan,
ExpressionSemantics.Equals => ExpressionSemantics.Equals,
ExpressionSemantics.Intersects => ExpressionSemantics.Intersects,
ExpressionSemantics.GreaterThanOrEqual => ExpressionSemantics.LowerThanOrEqual,
ExpressionSemantics.LowerThanOrEqual => ExpressionSemantics.GreaterThanOrEqual,
ExpressionSemantics.NotEquals => ExpressionSemantics.NotEquals,
ExpressionSemantics.IsContainedIn => ExpressionSemantics.Contains,
ExpressionSemantics.IsInfixOf => ExpressionSemantics.HasInfix,
ExpressionSemantics.IsPrefixOf => ExpressionSemantics.StartsWith,
ExpressionSemantics.IsSuffixOf => ExpressionSemantics.EndsWith,
_ => throw new ArgumentOutOfRangeException(nameof(semantics), semantics, null)
});
public NextExpression(TextSpan span, DataType dataType, ExpressionSemantics semantics)
: base(span, dataType, semantics)
{
}
protected Expression(TextSpan span, DataType dataType, ExpressionSemantics semantics)
: base(span)
{
DataType = dataType;
Semantics = semantics;
}
protected LiteralExpression(TextSpan span, DataType dataType, ExpressionSemantics semantics)
: base(span, dataType, semantics)
{
}