public override void Visit(BreakExpressionNode node)
{
var kw = node.BreakKeywordToken;
if (!kw.IsMissing)
{
var func = _scope.Function !;
if (func.GetLoop() is PrimaryExpressionNode loop)
{
var block = loop switch
{
ForExpressionNode f => f.Body,
WhileExpressionNode w => w.Body,
_ => throw DebugAssert.Unreachable(),
};
node.SetAnnotation("Target", loop);
node.SetAnnotation("Uses", func.GetUses(func.GetDepth(block)));
}
else
{
Error(node, SyntaxDiagnosticKind.InvalidLoopTarget, kw.Location,
"No enclosing 'while' or 'for' expression for this 'break' expression");
}
}
base.Visit(node);
}
static FlareTestEnvironment()
{
var os = "unix";
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
os = "windows";
}
else if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
{
os = "darwin";
}
else if (RuntimeInformation.IsOSPlatform(OSPlatform.FreeBSD))
{
os = "freebsd";
}
else if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
{
os = "linux";
}
var(arch, bits) = RuntimeInformation.ProcessArchitecture switch
{
Architecture.X86 => ("x86", "32"),
Architecture.X64 => ("x86", "64"),
Architecture.Arm => ("arm", "32"),
Architecture.Arm64 => ("arm", "64"),
_ => throw DebugAssert.Unreachable(),
};
Symbols = ImmutableHashSet.Create(os, $"{os}-{arch}", $"{os}-{bits}", $"{os}-{arch}-{bits}", arch,
$"{arch}-{bits}", bits);
}
public override IEnumerable <(SyntaxNode, SyntaxDiagnostic)> Run(NamedDeclarationNode node)
{
if (node.VisibilityKeywordToken?.Kind != SyntaxTokenKind.PubKeyword)
{
yield break;
}
var type = node switch
{
ConstantDeclarationNode _ => "constant",
FunctionDeclarationNode _ => "function",
ExternalDeclarationNode _ => "function",
_ => throw DebugAssert.Unreachable(),
};
var ident = node.NameToken;
if (ident.IsMissing)
{
yield break;
}
var diag = CheckDocAttribute(node.Attributes, ident.Location, $"Public {type} {ident} is undocumented");
if (diag != null)
{
yield return(node, diag);
}
}
public override void ToString(IndentedTextWriter writer)
{
writer.Write(Value switch
{
null => "nil",
bool b => b ? "true" : "false",
string a => $":{a}",
BigInteger i => i.ToString(),
double d => d.ToString(),
ReadOnlyMemory <byte> s => $"\"{Encoding.UTF8.GetString(s.Span)}\"",
_ => throw DebugAssert.Unreachable(),
});
public override TreeReference Visit(LogicalExpressionNode node, TreeReference state)
{
var loc = node.OperatorToken.Location;
var left = Visit(node.LeftOperand);
var right = Visit(node.RightOperand);
return(node.OperatorToken.Kind switch
{
SyntaxTokenKind.AndKeyword => new TreeLogicalAndNode(_context, loc, left, right),
SyntaxTokenKind.OrKeyword => new TreeLogicalOrNode(_context, loc, left, right),
_ => throw DebugAssert.Unreachable(),
});
public override string ToString()
{
var value = Value switch
{
null => "nil",
bool b => b ? "true" : "false",
string a => $":{a}",
BigInteger i => i.ToString(),
double d => d.ToString(),
ReadOnlyMemory <byte> s => $"\"{Encoding.UTF8.GetString(s.Span)}\"",
_ => throw DebugAssert.Unreachable(),
};
return($"{Name} = {value}");
}
public override void ToString(IndentedTextWriter writer)
{
writer.Write("(");
Left.ToString(writer);
writer.Write(" {0} ", Operator switch
{
TreeRelationalOperator.Equal => "==",
TreeRelationalOperator.NotEqual => "!=",
TreeRelationalOperator.LessThan => "<",
TreeRelationalOperator.LessThanOrEqual => "<=",
TreeRelationalOperator.GreaterThan => ">",
TreeRelationalOperator.GreaterThanOrEqual => ">=",
_ => throw DebugAssert.Unreachable(),
});
Project(string path)
{
ProjectDirectory = new DirectoryInfo(Path.GetDirectoryName(path) !);
DependencyDirectory = new DirectoryInfo(Path.Combine(ProjectDirectory.FullName, "dep"));
SourceDirectory = new DirectoryInfo(Path.Combine(ProjectDirectory.FullName, "src"));
BuildDirectory = new DirectoryInfo(Path.Combine(ProjectDirectory.FullName, "bin"));
// TODO: make this parsing more robust in general, and add error reporting.
var table = Toml.ReadFile(path);
var project = (TomlTable)table.Get("project");
Type = (ProjectType)Enum.Parse(typeof(ProjectType), project.Get <string>("type"), true);
Name = project.Get <string>("name");
MainModule = new FileInfo(Path.Combine(SourceDirectory.FullName, Path.ChangeExtension(Name,
StandardModuleLoader.ModuleFileNameExtension) !));
ExecutableFileName = table.TryGetValue("executable")?.Get <string>();
Version = SemanticVersion.Parse(project.Get <string>("version"));
License = project.TryGetValue("license")?.Get <string>();
Description = project.TryGetValue("description")?.Get <string>();
ProjectUri = project.TryGetValue("url") is TomlObject o1 ? new Uri(o1.Get <string>()) : null;
DocumentationUri = project.TryGetValue("url-doc") is TomlObject o2 ? new Uri(o2.Get <string>()) : null;
SourceUri = project.TryGetValue("url-src") is TomlObject o3 ? new Uri(o3.Get <string>()) : null;
var cfg = new SyntaxLintConfiguration();
if (table.TryGetValue("lints") is TomlTable lints)
{
foreach (var kvp in lints)
{
cfg = cfg.Set(kvp.Key, kvp.Value.Get <string>().ToLowerInvariant() switch
{
LanguageLinter.NoneSeverityName => (SyntaxDiagnosticSeverity?)null,
LanguageLinter.SuggestionSeverityName => SyntaxDiagnosticSeverity.Suggestion,
LanguageLinter.WarninngSeverityName => SyntaxDiagnosticSeverity.Warning,
LanguageLinter.ErrorSeverityName => SyntaxDiagnosticSeverity.Error,
_ => throw DebugAssert.Unreachable(),
});
internal Module(ModuleLoader loader, ModulePath path, ProgramNode node)
: base(node.Attributes)
{
Loader = loader;
Path = path;
var decls = ImmutableArray <Declaration> .Empty;
foreach (var decl in node.Declarations)
{
if (decl is UseDeclarationNode)
{
continue;
}
decls = decls.Add(decl switch
{
ConstantDeclarationNode c => (Declaration) new Constant(this, c),
FunctionDeclarationNode f => new Function(this, f),
ExternalDeclarationNode e => new External(this, e),
TestDeclarationNode t => new Test(this, t),
_ => throw DebugAssert.Unreachable(),
});
public FlareTestResult Run()
{
var syms = FlareTestEnvironment.Symbols;
foreach (var filter in Filters)
{
var ok = filter.Kind switch
{
FlareTestFilterKind.IfSet => syms.Contains(filter.Value),
FlareTestFilterKind.IfUnset => !syms.Contains(filter.Value),
_ => throw DebugAssert.Unreachable(),
};
if (!ok)
{
return(new FlareTestResult());
}
}
var vars = new Dictionary <string, string>();
foreach (var elem in Environment.GetEnvironmentVariables())
{
var(key, value) = (DictionaryEntry)elem !;
vars.Add((string)key, (string)value !);
}
// Note that we might need to overwrite existing variables here.
foreach (var(key, value) in Variables)
{
vars[key] = value;
}
var stdout = new StringBuilder();
var stderr = new StringBuilder();
(SourceLocation, SyntaxTokenKind) LexOperator(SourceLocation location)
{
var c1 = ((Rune)MoveNext() !).Value;
var r2 = PeekNext();
var c2 = r2?.Value;
// Handle most of the special operators first, where the runes can't possibly be
// part of a longer custom operator.
if (c1 == '!')
{
if (c2 == '=')
{
ConsumeNext();
}
else
{
Error(SyntaxDiagnosticKind.IncompleteOperator, _location,
$"Expected '=', but found {(r2 != null ? $"'{r2}'" : "end of input")}");
}
return(location, SyntaxTokenKind.ExclamationEquals);
}
if (c1 == '<' && c2 == '=')
{
ConsumeNext();
return(location, SyntaxTokenKind.OpenAngleEquals);
}
if (c1 == '=')
{
if (c2 == '=')
{
ConsumeNext();
return(location, SyntaxTokenKind.EqualsEquals);
}
else if (c2 == '>')
{
ConsumeNext();
return(location, SyntaxTokenKind.EqualsCloseAngle);
}
return(location, SyntaxTokenKind.Equals);
}
if (c1 == '>' && c2 == '=')
{
ConsumeNext();
return(location, SyntaxTokenKind.OpenAngleEquals);
}
var parts = 1;
// Lex the full operator.
while (PeekNext() is Rune cur)
{
switch (cur.Value)
{
case '%':
case '&':
case '*':
case '+':
case '-':
case '/':
case '<':
case '>':
case '^':
case '|':
case '~':
ConsumeNext();
parts++;
continue;
default:
break;
}
break;
}
// Handle remaining special operators.
switch (parts)
{
case 1:
if (c1 == '<')
{
return(location, SyntaxTokenKind.OpenAngle);
}
if (c1 == '>')
{
return(location, SyntaxTokenKind.CloseAngle);
}
break;
case 2:
if (c1 == '-' && c2 == '>')
{
return(location, SyntaxTokenKind.MinusCloseAngle);
}
if (c1 == '<' && c2 == '-')
{
return(location, SyntaxTokenKind.OpenAngleMinus);
}
break;
}
SyntaxTokenKind kind;
// At this point, it's definitely a custom operator, so determine the category.
switch (c1)
{
case '%':
case '*':
case '/':
kind = SyntaxTokenKind.MultiplicativeOperator;
break;
case '+':
case '-':
case '~':
kind = SyntaxTokenKind.AdditiveOperator;
break;
case '<':
case '>':
kind = SyntaxTokenKind.ShiftOperator;
break;
case '&':
case '^':
case '|':
kind = SyntaxTokenKind.BitwiseOperator;
break;
default:
throw DebugAssert.Unreachable();
}
return(location, kind);
}
static BigInteger CreateInteger(string value)
{
var radix = 10;
if (value.StartsWith("0B") || value.StartsWith("0b"))
{
radix = 2;
}
else if (value.StartsWith("0O") || value.StartsWith("0o"))
{
radix = 8;
}
else if (value.StartsWith("0X") || value.StartsWith("0x"))
{
radix = 16;
}
var str = value.AsSpan();
// Strip base prefix.
if (radix != 10)
{
str = str.Slice(2);
}
// Avoid BigInteger allocations/calculations for some very common cases.
if (str.Trim('0').IsEmpty)
{
return(BigInteger.Zero);
}
if (str.TrimStart('0').SequenceEqual("1"))
{
return(BigInteger.One);
}
var result = BigInteger.Zero;
foreach (var c in str)
{
int digit;
if (c - '0' <= 9)
{
digit = c - '0';
}
else if (c - 'A' <= 'Z' - 'A')
{
digit = c - 'A' + 10;
}
else if (c - 'a' <= 'z' - 'a')
{
digit = c - 'a' + 10;
}
else
{
throw DebugAssert.Unreachable();
}
result = result * radix + digit;
}
return(result);
}
protected override TreePattern DefaultVisit(SyntaxNode node, TreePattern state)
{
throw DebugAssert.Unreachable();
}