private void EmitVariablesIfPresent(JsonTextWriter jsonWriter, ExpressionEmitter emitter)
{
if (!this.context.SemanticModel.Root.VariableDeclarations.Any(symbol => !this.context.VariablesToInline.Contains(symbol)) &&
this.context.FunctionVariables.Count == 0)
{
return;
}
jsonWriter.WritePropertyName("variables");
jsonWriter.WriteStartObject();
//emit internal variables
foreach (var functionVariable in this.context.FunctionVariables.Values.OrderBy(x => x.Name, LanguageConstants.IdentifierComparer))
{
jsonWriter.WritePropertyName(functionVariable.Name);
emitter.EmitExpression(functionVariable.Value);
}
var variableLookup = this.context.SemanticModel.Root.VariableDeclarations.ToLookup(variableSymbol => variableSymbol.Value is ForSyntax);
// local function
IEnumerable <VariableSymbol> GetNonInlinedVariables(bool valueIsLoop) =>
variableLookup[valueIsLoop].Where(symbol => !this.context.VariablesToInline.Contains(symbol));
if (GetNonInlinedVariables(valueIsLoop: true).Any())
{
// we have variables whose values are loops
emitter.EmitProperty("copy", () =>
{
jsonWriter.WriteStartArray();
foreach (var variableSymbol in GetNonInlinedVariables(valueIsLoop: true))
{
// enforced by the lookup predicate above
var @for = (ForSyntax)variableSymbol.Value;
emitter.EmitCopyObject(variableSymbol.Name, @for, @for.Body);
}
jsonWriter.WriteEndArray();
});
}
// emit non-loop variables
foreach (var variableSymbol in GetNonInlinedVariables(valueIsLoop: false))
{
jsonWriter.WritePropertyName(variableSymbol.Name);
emitter.EmitExpression(variableSymbol.Value);
}
jsonWriter.WriteEndObject();
}
private void EmitVariable(VariableSymbol variableSymbol, ExpressionEmitter emitter)
{
emitter.EmitExpression(variableSymbol.Value);
}
