public void AddField(AstVariableDefinition variable)
{
var field = new CSharp.Field(variable.Identifier.SymbolName.CanonicalName.FullName, variable.TypeReference.ToCode())
{
AccessModifiers = AccessModifiers.Private,
FieldModifiers = FieldModifiers.Static,
};
_moduleClass.AddField(field);
}
public override void VisitAssignment(AstAssignment assign)
{
Ast.Guard(assign.HasVariable, "AstVariable not set on assign.");
assign.VisitChildren(this);
if (assign.Variable is AstVariableReference varRef &&
varRef.VariableDefinition is null)
{
var symbol = varRef.Symbol;
AstTypeReference?typeRef = null;
// Variable.TypeReference is usually null.
if (varRef.HasTypeReference)
{
typeRef = varRef.TypeReference.MakeCopy();
}
// It is set only when type is explicitly in source code, or has been inferred.
var varDef = new AstVariableDefinition(typeRef);
varDef.SetIdentifier(varRef.Identifier);
varDef.SetSymbol(symbol);
symbol.RemoveReference(varRef);
AstSymbolReferenceRemover.RemoveReference(varRef);
symbol.AddNode(varDef);
assign.SetVariableDefinition(varDef);
// do the children again for types
assign.VisitChildren(this);
}
if (!assign.Variable !.HasTypeReference)
{
// typeless assign of var (x = 42)
var expr = assign.Expression;
var typeRef = expr.TypeReference;
Ast.Guard(typeRef.HasIdentifier, "AstIdentifier not set on AstTypeReference.");
var symbol = assign.Variable.Symbol;
var def = symbol.DefinitionAs <AstTypeDefinition>();
if (def is not null)
{
typeRef = AstTypeReferenceType.From(def);
assign.Variable.SetTypeReference(typeRef);
}
else
{
assign.Variable.SetTypeReference(typeRef.MakeCopy());
}
Visit(assign.Variable.TypeReference);
}
}
public override void VisitVariableDefinition(AstVariableDefinition variable)
{
if (variable.IsTopLevel())
{
Context.ModuleClass.AddField(variable);
}
else
{
Context.CodeBuilder.AddVariable(variable);
}
if (variable.ParentAs <AstAssignment>() is null)
{
// prevent 'use of unassigned variable' error
Context.CodeBuilder.CsBuilder.EndLine(" = default");
}
}
public void MapDefinition(AstVariableDefinition variableAst, VariableDefinition variable)
{
locals.Add(variableAst, variable);
}
public AstVariableReference(AstVariableDefinition variable)
{
this.Variable = variable;
}
public override void VisitVariableDefinition(AstVariableDefinition variable)
{
variable.TypeReference.Should().NotBeNull();
variable.VisitChildren(this);
}
public void AddVariable(AstVariableDefinition variable)
{
_csBuilder.StartVariable(variable.TypeReference.ToCode(), variable.Identifier.SymbolName.CanonicalName.FullName);
}
protected virtual void AppendVariableDefinition(StringBuilder builder, AstVariableDefinition variableDefinition)
{
builder.Append(variableDefinition);
}
public virtual void VisitVariableDefinition(AstVariableDefinition variable)
{
variable.VisitChildren(this);
}