public bool WriteRefError(TextWriter writer, IInlineExpression exp)
{
AddError(ResolverFluentError.Reference(exp));
try
{
writer.Write('{');
exp.WriteError(writer);
writer.Write('}');
return(true);
}
catch (Exception)
{
return(false);
}
}
public void Track(TextWriter writer, Pattern pattern, IInlineExpression exp)
{
if (_travelled.Contains(pattern))
{
AddError(ResolverFluentError.Cyclic(pattern));
writer.Write('{');
exp.WriteError(writer);
writer.Write('}');
}
else
{
_travelled.Add(pattern);
pattern.Write(writer, this);
PopTraveled();
}
}
public static void WriteInlineExpression(Utf8JsonWriter writer, IInlineExpression value,
JsonSerializerOptions options)
{
if (value is TextLiteral textLiteral)
{
writer.WriteStartObject();
writer.WritePropertyName("value");
writer.WriteStringValue(textLiteral.Value.Span);
writer.WritePropertyName("type");
writer.WriteStringValue("StringLiteral");
writer.WriteEndObject();
}
else if (value is NumberLiteral numberLiteral)
{
writer.WriteStartObject();
writer.WritePropertyName("value");
writer.WriteStringValue(numberLiteral.Value.Span);
writer.WritePropertyName("type");
writer.WriteStringValue("NumberLiteral");
writer.WriteEndObject();
}
else if (value is MessageReference msgRef)
{
JsonSerializer.Serialize(writer, msgRef, options);
}
else if (value is FunctionReference funcRef)
{
JsonSerializer.Serialize(writer, funcRef, options);
}
else if (value is Placeable placeable)
{
JsonSerializer.Serialize(writer, placeable, options);
}
else if (value is TermReference termReference)
{
JsonSerializer.Serialize(writer, termReference, options);
}
else if (value is VariableReference variableReference)
{
JsonSerializer.Serialize(writer, variableReference, options);
}
}
private static void ProcessMsgRef(IInlineExpression self, TextWriter writer, Scope scope,
MessageReference msgRef)
{
var id = msgRef.Id;
var attribute = msgRef.Attribute;
if (scope.Bundle.TryGetAstMessage(id.Name.ToString(), out var msg))
{
if (attribute != null)
{
var found = msg.Attributes.Find(e => e.Id.Equals(attribute));
if (found != null)
{
scope.Track(writer, found.Value, self);
}
else
{
scope.WriteRefError(writer, self);
return;
}
}
else
{
if (msg.Value != null)
{
scope.Track(writer, msg.Value, self);
}
else
{
scope.AddError(ResolverFluentError.NoValue(id.Name));
writer.Write('{');
self.WriteError(writer);
writer.Write('}');
}
}
}
else
{
scope.WriteRefError(writer, self);
}
}
public static void WriteError(this IInlineExpression self, TextWriter writer)
{
if (self is MessageReference msgRef)
{
if (msgRef.Attribute == null)
{
writer.Write($"{msgRef.Id}");
return;
}
writer.Write($"{msgRef.Id}.{msgRef.Attribute}");
return;
}
if (self is TermReference termRef)
{
if (termRef.Attribute == null)
{
writer.Write($"-{termRef.Id}");
return;
}
writer.Write($"-{termRef.Id}.{termRef.Attribute}");
}
else if (self is FunctionReference funcRef)
{
writer.Write($"{funcRef.Id}()");
return;
}
else if (self is VariableReference varRef)
{
writer.Write($"${varRef.Id}");
return;
}
throw new ArgumentException($"Unexpected inline expression `{self.GetType()}`!");
}
public static IFluentType Resolve(this IInlineExpression self, Scope scope)
{
if (self is TextLiteral textLiteral)
{
StringWriter stringWriter = new();
UnicodeUtil.WriteUnescapedUnicode(textLiteral.Value, stringWriter);
return((FluentString)stringWriter.ToString());
}
if (self is NumberLiteral numberLiteral)
{
return(FluentNumber.TryNumber(numberLiteral.Value.Span));
}
if (self is VariableReference varRef)
{
var args = scope.LocalArgs ?? scope.Args;
if (args != null &&
args.TryGetValue(varRef.Id.ToString(), out var arg))
{
return(arg.Copy());
}
if (scope.LocalArgs == null)
{
scope.AddError(ResolverFluentError.UnknownVariable(varRef));
}
return(new FluentErrType());
}
var writer = new StringWriter();
self.TryWrite(writer, scope);
return((FluentString)writer.ToString());
}
public SelectExpression(IInlineExpression selector, List <Variant> variants)
{
Selector = selector;
Variants = variants;
}
public NamedArgument(Identifier name, IInlineExpression value)
{
Name = name;
Value = value;
}
private static void Write(this IInlineExpression self, TextWriter writer, Scope scope)
{
if (self is TextLiteral textLiteral)
{
UnicodeUtil.WriteUnescapedUnicode(textLiteral.Value, writer);
return;
}
if (self is NumberLiteral numberLiteral)
{
var value = FluentNumber.TryNumber(numberLiteral.Value.Span);
value.Write(writer, scope);
return;
}
if (self is MessageReference msgRef)
{
ProcessMsgRef(self, writer, scope, msgRef);
return;
}
if (self is TermReference termRef)
{
var res = scope.GetArguments(termRef.Arguments);
scope.SetLocalArgs(res.Named);
if (scope.Bundle.TryGetAstTerm(termRef.Id.ToString(), out var term))
{
var attrName = termRef.Attribute;
var attr = term
.Attributes
.Find(a => a.Id.Equals(attrName));
scope.Track(writer, attr != null ? attr.Value : term.Value, self);
}
else
{
scope.WriteRefError(writer, self);
}
scope.SetLocalArgs(null);
return;
}
if (self is FunctionReference funcRef)
{
var(resolvedPosArgs, resolvedNamedArgs) = scope.GetArguments(funcRef.Arguments);
if (scope.Bundle.TryGetFunction(funcRef.Id, out var func))
{
var result = func.Function(resolvedPosArgs, resolvedNamedArgs);
if (result.IsError())
{
self.WriteError(writer);
}
else
{
writer.Write(result.AsString());
}
}
else
{
scope.WriteRefError(writer, self);
}
}
if (self is VariableReference varRef)
{
var id = varRef.Id;
var args = scope.LocalArgs ?? scope.Args;
if (args != null &&
args.TryGetValue(id.ToString(), out var arg))
{
arg.Write(writer, scope);
}
else
{
if (scope.LocalArgs == null)
{
scope.AddError(ResolverFluentError.Reference(self));
}
writer.Write('{');
self.WriteError(writer);
writer.Write('}');
}
}
if (self is Placeable placeable)
{
placeable.Expression.TryWrite(writer, scope);
}
}