public SceneSymbol?ResolveCallSceneTarget(CallSceneStatement callSceneStmt)
{
if (callSceneStmt.TargetModule is null)
{
return(LookupScene(callSceneStmt.TargetScene));
}
Spanned <string> targetModule = callSceneStmt.TargetModule.Value;
string modulePath = targetModule.Value;
try
{
SourceModuleSymbol targetSourceModule = _compilation.GetSourceModule(modulePath);
SceneSymbol? scene = targetSourceModule.LookupScene(callSceneStmt.TargetScene.Value);
if (scene is null)
{
ReportUnresolvedIdentifier(callSceneStmt.TargetScene);
}
return(scene);
}
catch (FileNotFoundException)
{
string moduleName = targetModule.Value;
Report(targetModule, DiagnosticId.ExternalModuleNotFound, moduleName);
return(null);
}
}
private void ResolveTy(Spanned<TyRef> spTy)
{
var ty = spTy.value as PathTyRef;
if (ty != null && !ty.Resolved)
{
if (!ty.Resolved)
{
// TODO(kai): eventually this will all be qualified, we'll have to deal with that.
var name = ty.name;
var sym = walker.Current.Lookup(name);
if (sym == null)
{
// TODO(kai): use spanned types
log.Error(spTy.span, "Could not locate symbol \"{0}\", failed to resolve type.", name);
return;
}
var symTy = sym.Ty;
if (symTy is PathTyRef)
{
if ((symTy as PathTyRef).Resolved)
ty.Resolve(symTy);
else hasResolved = false;
}
else ty.Resolve(symTy);
}
}
}
// TODO(kai): default values
public Parameter(Spanned<string> name, Spanned<TyRef> spTy)
{
if (spTy == null)
throw new System.ArgumentNullException("spTy");
this.spTy = spTy;
this.name = name;
}
internal UnaryExpression(
Expression operand,
Spanned <UnaryOperatorKind> operatorKind,
TextSpan span) : base(span)
{
Operand = operand;
OperatorKind = operatorKind;
}
internal FunctionCallExpression(
Spanned <string> targetName,
ImmutableArray <Expression> arguments,
TextSpan span) : base(span)
{
TargetName = targetName;
Arguments = arguments;
}
internal AssignmentExpression(
Expression target,
Spanned <AssignmentOperatorKind> operatorKind,
Expression value,
TextSpan span) : base(span)
{
Target = target;
OperatorKind = operatorKind;
Value = value;
}
internal BinaryExpression(
Expression left,
Spanned <BinaryOperatorKind> operatorKind,
Expression right,
TextSpan span) : base(span)
{
Left = left;
OperatorKind = operatorKind;
Right = right;
}
public SceneSymbol?LookupScene(Spanned <string> identifier)
{
SceneSymbol?scene = _module.LookupScene(identifier.Value);
if (scene is not null)
{
return(scene);
}
ReportUnresolvedIdentifier(identifier);
return(null);
}
public ChapterSymbol?LookupChapter(Spanned <string> identifier)
{
ChapterSymbol?chapter = _module.LookupChapter(identifier.Value);
if (chapter is not null)
{
return(chapter);
}
ReportUnresolvedIdentifier(identifier);
return(null);
}
public PrefixOperation(int nodeId, Token @operator, IExpression operand)
{
NodeId = nodeId;
Span = SourceSpan.Merge(@operator.Span, operand.Span);
Operator = new Spanned <PrefixOperator>(
@operator.Kind switch
{
TokenKind.Bang => PrefixOperator.Not,
TokenKind.Plus => PrefixOperator.Identity,
TokenKind.Minus => PrefixOperator.Negate,
TokenKind.Tilde => PrefixOperator.BinaryNot,
_ => throw new ArgumentException(nameof(@operator)),
},
private void ErrNoSuchFunction(Spanned<string> spName, TyRef[] args)
{
var builder = new StringBuilder().Append('|');
for (int i = 0; i < args.Length; i++)
{
if (i > 0)
builder.Append(", ");
builder.Append(args[i]);
}
builder.Append('|');
log.Error(spName.span, "No method \"{0}\" with parameter types {1} exists.", spName.value, builder.ToString());
}
public LookupResult LookupFunction(Spanned <string> identifier)
{
string name = identifier.Value;
BuiltInFunction?builtInFunction = WellKnownSymbols.LookupBuiltInFunction(name);
if (builtInFunction.HasValue)
{
return(new LookupResult(builtInFunction.Value));
}
FunctionSymbol?function = _module.LookupFunction(name);
if (function is not null)
{
return(new LookupResult(function));
}
ReportUnresolvedIdentifier(identifier);
return(LookupResult.Empty);
}
public NodeInvoke(Spanned<string> spName, List<NodeExpr> args)
{
this.spName = spName;
this.args = args;
}
public NodeLet(Spanned<string> spName, Spanned<TyRef> spTy, NodeExpr value)
{
this.spName = spName;
this.spTy = spTy;
this.value = value;
}
public static void AssertSpannedText(string text, string substring, Spanned <string> spannedSubstring)
{
Assert.Equal(substring, spannedSubstring.Value);
Assert.Equal(SpanOf(text, substring), spannedSubstring.Span);
}