// Generates a class declaration for the current alt and its subtypes
internal void GenerateOutput(ref LNodeList list)
{
bool isAbstract = _classAttrs.Any(a => a.IsIdNamed(S.Abstract));
var baseParts = new List <AdtParam>();
for (var type = ParentType; type != null; type = type.ParentType)
{
baseParts.InsertRange(0, type.Parts);
}
var allParts = baseParts.Concat(Parts);
var initialization = Parts.Select(p => LNode.Call(CodeSymbols.Assign, LNode.List(LNode.Call(CodeSymbols.Dot, LNode.List(LNode.Id(CodeSymbols.This), p.NameId)).SetStyle(NodeStyle.Operator), p.NameId)).SetStyle(NodeStyle.Operator)).ToList();
if (baseParts.Count > 0)
{
initialization.Insert(0, F.Call(S.Base, baseParts.Select(p => p.NameId)));
}
var args = new LNodeList(allParts.Select(p => p.OriginalDecl));
if (!_constructorAttrs.Any(a => a.IsIdNamed(S.Public)))
{
_constructorAttrs.Add(F.Id(S.Public));
}
LNode constructor = LNode.Call(LNode.List(_constructorAttrs), CodeSymbols.Constructor, LNode.List(LNode.Missing, _typeNameStem, LNode.Call(CodeSymbols.AltList, LNode.List(args)), LNode.Call(CodeSymbols.Braces, LNode.List().AddRange(initialization).AddRange(_extraConstrLogic)).SetStyle(NodeStyle.StatementBlock)));
var outBody = new LNodeList();
outBody.Add(constructor);
outBody.AddRange(Parts.Select(p => p.GetFieldDecl()));
outBody.AddRange(baseParts.Select(p => GetWithFn(p, isAbstract, S.Override, allParts)));
outBody.AddRange(Parts.Select(p => GetWithFn(p, isAbstract, _children.Count > 0 ? S.Virtual : null, allParts)));
outBody.AddRange(Parts.WithIndexes()
.Where(kvp => kvp.Value.NameId.Name.Name != "Item" + (baseParts.Count + kvp.Key + 1))
.Select(kvp => kvp.Value.GetItemDecl(baseParts.Count + kvp.Key + 1)));
outBody.AddRange(_classBody);
list.Add(LNode.Call(LNode.List(_classAttrs), CodeSymbols.Class, LNode.List(TypeName, LNode.Call(CodeSymbols.AltList, LNode.List(BaseTypes)), LNode.Call(CodeSymbols.Braces, LNode.List(outBody)).SetStyle(NodeStyle.StatementBlock))));
if (_genericArgs.Count > 0 && Parts.Count > 0)
{
var argNames = allParts.Select(p => p.NameId);
list.Add(LNode.Call(LNode.List().AddRange(_classAttrs).Add(LNode.Id(CodeSymbols.Static)).Add(LNode.Id(CodeSymbols.Partial)), CodeSymbols.Class, LNode.List(_typeNameStem, LNode.Call(CodeSymbols.AltList), LNode.Call(CodeSymbols.Braces, LNode.List(LNode.Call(LNode.List(LNode.Id(CodeSymbols.Public), LNode.Id(CodeSymbols.Static)), CodeSymbols.Fn, LNode.List(TypeNameWithoutAttrs, LNode.Call(CodeSymbols.Of, LNode.List().Add(LNode.Id((Symbol)"New")).AddRange(_genericArgs)).SetStyle(NodeStyle.Operator), LNode.Call(CodeSymbols.AltList, LNode.List(args)), LNode.Call(CodeSymbols.Braces, LNode.List(LNode.Call(CodeSymbols.Return, LNode.List(LNode.Call(CodeSymbols.New, LNode.List(LNode.Call(TypeNameWithoutAttrs, LNode.List(argNames)))))))).SetStyle(NodeStyle.StatementBlock))))).SetStyle(NodeStyle.StatementBlock))));
}
foreach (var child in _children)
{
child.GenerateOutput(ref list);
}
}
private static StringBuilder ConcatCore(LNode node, out LNodeList attrs, IMessageSink sink, bool allowLastToBeCall = false)
{
attrs = node.Attrs;
var args = node.Args;
if (args.Count == 0)
{
return(null);
}
StringBuilder sb = new StringBuilder();
for (int i = 0; i < args.Count; i++)
{
LNode arg = args[i];
attrs.AddRange(arg.Attrs);
if (arg.IsLiteral)
{
if (!arg.TextValue.IsNull)
{
arg.TextValue.AppendTo(sb);
}
else
{
sb.Append(arg.Value ?? "null");
}
}
else if (arg.IsId)
{
sb.Append(arg.Name);
}
else // call
{
if (i + 1 != args.Count || !arg.HasSimpleHead())
{
Reject(sink, arg, "Expected simple identifier or literal");
return(null);
}
sb.Append(arg.Name);
}
}
return(sb);
}
internal void ScanClassBody(LNodeList body)
{
foreach (var stmt in body)
{
int?i;
{
LNode altName;
LNodeList attrs, childBody = default(LNodeList), parts, rest;
if ((attrs = stmt.Attrs).IsEmpty | true && stmt.Calls(CodeSymbols.Fn, 3) && stmt.Args[0].IsIdNamed((Symbol)"alt") && (altName = stmt.Args[1]) != null && stmt.Args[2].Calls(CodeSymbols.AltList) && (parts = stmt.Args[2].Args).IsEmpty | true || (attrs = stmt.Attrs).IsEmpty | true && stmt.Calls(CodeSymbols.Fn, 4) && stmt.Args[0].IsIdNamed((Symbol)"alt") && (altName = stmt.Args[1]) != null && stmt.Args[2].Calls(CodeSymbols.AltList) && (parts = stmt.Args[2].Args).IsEmpty | true && stmt.Args[3].Calls(CodeSymbols.Braces) && (childBody = stmt.Args[3].Args).IsEmpty | true)
{
LNode genericAltName = altName;
if (altName.CallsMin(CodeSymbols.Of, 1))
{
}
else
{
if (_genericArgs.Count > 0)
{
genericAltName = LNode.Call(CodeSymbols.Of, LNode.List().Add(altName).AddRange(_genericArgs.ToVList())).SetStyle(NodeStyle.Operator);
}
}
var child = new AltType(attrs, genericAltName, LNode.List(), this);
child.AddParts(parts);
child.ScanClassBody(childBody);
_children.Add(child);
}
else if ((attrs = stmt.Attrs).IsEmpty | true && (i = attrs.FirstIndexWhere(a => a.IsIdNamed(__alt))) != null && stmt.CallsMin(CodeSymbols.Constructor, 3) && stmt.Args[1].IsIdNamed((Symbol)"#this") && stmt.Args[2].Calls(CodeSymbols.AltList) && (rest = new LNodeList(stmt.Args.Slice(3))).IsEmpty | true && rest.Count <= 1)
{
parts = stmt.Args[2].Args;
attrs.RemoveAt(i.Value);
_constructorAttrs.AddRange(attrs);
if (rest.Count > 0 && rest[0].Calls(S.Braces))
{
_extraConstrLogic.AddRange(rest[0].Args);
}
AddParts(parts);
}
else
{
_classBody.Add(stmt);
}
}
}
}
void ProcessEnsuresAttribute(LNodeList conditions, Symbol mode, LNode exceptionType, LNode variableName)
{
// Create a "Contract.Whatever()" check for each provided condition.
bool haveCCRewriter = _haveCCRewriter && mode != sy_ensuresAssert && mode != sy_ensuresFinally;
var checks = LNode.List();
foreach (var condition_ in conditions)
{
LNode condition = condition_; // make it writable so we can replace `_`
LNode conditionStr;
LNode contractResult = null;
string underscoreError = null;
if (mode == sy_ensuresOnThrow)
{
contractResult = Id__exception__;
if (haveCCRewriter)
{
underscoreError = "`ensuresOnThrow` does not support `_` in MS Code Contracts mode.";
}
}
else // @@ensures or @@ensuresAssert or @@ensuresFinally
{
contractResult = haveCCRewriter ? LNode.Call(LNode.Call(CodeSymbols.Dot, LNode.List(LNode.Id((Symbol)"Contract"), LNode.Call(CodeSymbols.Of, LNode.List(LNode.Id((Symbol)"Result"), ReturnType)).SetStyle(NodeStyle.Operator))).SetStyle(NodeStyle.Operator)) : Id_return_value;
if (mode == sy_ensuresFinally)
{
underscoreError = "The macro for `{0}` does not support `_` because the return value is not available in `finally`";
}
else if (haveCCRewriter && ReturnType.IsIdNamed(S.Missing))
{
underscoreError = "The macro for `{0}` does not support `_` in this context when MS Code Contracts are enabled, because the return type is unknown.";
}
bool changed = ReplaceContractUnderscore(ref condition, contractResult);
}
if (ReplaceContractUnderscore(ref condition, contractResult) && underscoreError != null)
{
Context.Sink.Error(condition, underscoreError, mode);
}
if (haveCCRewriter)
{
if (mode == sy_ensuresOnThrow)
{
checks.Add(exceptionType != null
? LNode.Call(LNode.Call(CodeSymbols.Dot, LNode.List(LNode.Id((Symbol)"Contract"), LNode.Call(CodeSymbols.Of, LNode.List(LNode.Id((Symbol)"EnsuresOnThrow"), exceptionType)).SetStyle(NodeStyle.Operator))).SetStyle(NodeStyle.Operator), LNode.List(condition)) : LNode.Call(LNode.Call(CodeSymbols.Dot, LNode.List(LNode.Id((Symbol)"Contract"), LNode.Id((Symbol)"EnsuresOnThrow"))).SetStyle(NodeStyle.Operator), LNode.List(condition)));
}
else
{
checks.Add(LNode.Call(LNode.Call(CodeSymbols.Dot, LNode.List(LNode.Id((Symbol)"Contract"), LNode.Id((Symbol)"Ensures"))).SetStyle(NodeStyle.Operator), LNode.List(condition)));
}
}
else
{
conditionStr = ConditionToStringLit(condition,
mode == sy_ensuresOnThrow
? "Postcondition failed after throwing an exception: {1}" :
"Postcondition failed: {1}");
if (mode == sy_ensuresOnThrow)
{
var excType = GetExceptionTypeForEnsuresOnThrow();
checks.Add(LNode.Call(CodeSymbols.If, LNode.List(LNode.Call(CodeSymbols.Not, LNode.List(condition)).SetStyle(NodeStyle.Operator), LNode.Call(CodeSymbols.Throw, LNode.List(LNode.Call(CodeSymbols.New, LNode.List(LNode.Call(excType, LNode.List(conditionStr, Id__exception__)))))))));
}
else
{
LNode assertMethod;
if (mode == sy_ensuresAssert)
{
assertMethod = GetAssertMethod(Context);
}
else if (mode == sy_ensuresFinally)
{
assertMethod = GetAssertMethodForEnsuresFinally();
}
else
{
assertMethod = GetAssertMethodForEnsures();
}
checks.Add(LNode.Call(assertMethod, LNode.List(condition, conditionStr)));
}
}
}
// Request that the checks be added to the beginning of the method
if (checks.Count > 0)
{
if (_haveCCRewriter)
{
PrependStmts.AddRange(checks);
}
else if (mode == sy_ensuresOnThrow)
{
LNode excSpec = exceptionType == null ? Id__exception__ : LNode.Call(CodeSymbols.Var, LNode.List(exceptionType, Id__exception__));
PrependStmts.Add(LNode.Call((Symbol)"on_throw", LNode.List(excSpec, LNode.Call(CodeSymbols.Braces, LNode.List(checks)).SetStyle(NodeStyle.StatementBlock))).SetStyle(NodeStyle.Special));
}
else if (mode == sy_ensuresFinally)
{
PrependStmts.Add(LNode.Call((Symbol)"on_finally", LNode.List(LNode.Call(CodeSymbols.Braces, LNode.List(checks)).SetStyle(NodeStyle.StatementBlock))).SetStyle(NodeStyle.Special));
}
else // mode == @@ensures || mode == @@ensuresAssert
{
PrependStmts.Add(LNode.Call((Symbol)"on_return", LNode.List(Id_return_value, LNode.Call(CodeSymbols.Braces, LNode.List(checks)).SetStyle(NodeStyle.StatementBlock))).SetStyle(NodeStyle.Special));
}
}
}
public static LNode CompileMacro(LNode pattern, LNode body, IMacroContext context, LNodeList attrs)
{
var modeNodes = attrs.Where(a => Enum.TryParse(a.Name.Name, out MacroMode _));
// unwrap braces (they're not part of the pattern, they just enable statement syntax in EC#)
var pattern_apos = pattern.UnwrapBraces();
MacroMode modes = GetMacroMode(ref attrs, pattern_apos);
// compileTime {...} can recognize macro method definitions.
// Take advantage of this by generating a macro method which it will register for us.
LNode macroName = pattern_apos.Target ?? pattern_apos;
LNode syntax = F.Literal(pattern_apos.ToString());
LNode description = attrs.FirstOrDefault(a => a.Value is string) ?? F.Literal("User-defined macro at {0}".Localized(pattern.Range.Start));
attrs = attrs.SmartWhere(a => !(a.Value is string)); // remove docstring, if any
var extraArgs = LNode.List();
if (macroName.IsId)
{
extraArgs.Add(F.Literal(macroName.Name.Name));
}
else
{
Debug.Assert((modes & (MacroMode.MatchEveryCall | MacroMode.MatchEveryIdentifier | MacroMode.MatchEveryLiteral)) != 0);
}
// ensure operator macros like `'+` are not printed as `operator+` which C# will reject
if (EcsValidators.IsOperator(macroName.Name))
{
macroName = F.Id(EcsValidators.SanitizeIdentifier(macroName.Name.Name));
}
LNode modesExpr = null;
foreach (LNode mode in modeNodes)
{
modesExpr = LNode.MergeBinary(modesExpr, LNode.Call(CodeSymbols.Dot, LNode.List(LNode.Call(CodeSymbols.Dot, LNode.List(LNode.Call(CodeSymbols.ColonColon, LNode.List(LNode.Id((Symbol)"global"), LNode.Id((Symbol)"LeMP"))).SetStyle(NodeStyle.Operator), LNode.Id((Symbol)"MacroMode"))).SetStyle(NodeStyle.Operator), mode)).SetStyle(NodeStyle.Operator), S.OrBits);
}
if (modesExpr != null)
{
extraArgs.Add(LNode.Call(CodeSymbols.Assign, LNode.List(LNode.Id((Symbol)"Mode"), modesExpr)).SetStyle(NodeStyle.Operator));
}
LNode lmAttribute = LNode.Call(LNode.Call(CodeSymbols.Dot, LNode.List(LNode.Call(CodeSymbols.ColonColon, LNode.List(LNode.Id((Symbol)"global"), LNode.Id((Symbol)"LeMP"))).SetStyle(NodeStyle.Operator), LNode.Id((Symbol)"LexicalMacroAttribute"))).SetStyle(NodeStyle.Operator), LNode.List().Add(syntax).Add(description).AddRange(extraArgs));
if (!body.Calls(S.Braces))
{
body = LNode.Call(CodeSymbols.Braces, LNode.List(LNode.Call(CodeSymbols.Return, LNode.List(body)))).SetStyle(NodeStyle.StatementBlock);
}
body = context.PreProcess(body);
// Look for "using" statements above the macro() call
LNodeList usingDirectives = LNode.List(context.PreviousSiblings.Where(n => n.Calls(S.Import)));
// Look for "using" and "#r" statements at the beginning of the body
if (body.Calls(S.Braces))
{
var bodyUsings = body.Args.TakeNowWhile(stmt => stmt.Calls(S.Import) || stmt.Calls(S.CsiReference));
usingDirectives.AddRange(bodyUsings);
body = body.WithArgs(body.Args.Slice(bodyUsings.Count));
}
// Create a matchCode statement unless the pattern is MacroName($(.._)), which always matches
if (!(pattern_apos.HasSimpleHeadWithoutPAttrs() && pattern_apos.Target.IsId &&
pattern_apos.ArgCount == 1 && pattern_apos[0].Equals(LNode.Call(CodeSymbols.Substitute, LNode.List(LNode.Call(CodeSymbols.DotDot, LNode.List(LNode.Id((Symbol)"_"))).SetStyle(NodeStyle.Operator))).SetStyle(NodeStyle.Operator))))
{
// Note: the body is already preprocessed; #noLexicalMacros prevents double-processing
body = LNode.Call(CodeSymbols.Braces, LNode.List(LNode.Call((Symbol)"matchCode", LNode.List(LNode.Id((Symbol)"#node"), LNode.Call(CodeSymbols.Braces, LNode.List(LNode.Call(CodeSymbols.Case, LNode.List(pattern)), LNode.Call((Symbol)"#noLexicalMacros", LNode.List(body.AsList(S.Braces))))).SetStyle(NodeStyle.StatementBlock))).SetStyle(NodeStyle.Special), LNode.Call(CodeSymbols.Return, LNode.List(LNode.Literal(null))))).SetStyle(NodeStyle.StatementBlock);
}
return(LNode.Call((Symbol)"compileTime", LNode.List(LNode.Call(CodeSymbols.Braces, LNode.List().AddRange(usingDirectives).Add(LNode.Call(LNode.List().Add(lmAttribute).AddRange(attrs).Add(LNode.Id(CodeSymbols.Public)).Add(LNode.Id(CodeSymbols.Static)), CodeSymbols.Fn, LNode.List(LNode.Id((Symbol)"LNode"), macroName, LNode.Call(CodeSymbols.AltList, LNode.List(LNode.Call(CodeSymbols.Var, LNode.List(LNode.Id((Symbol)"LNode"), LNode.Id((Symbol)"#node"))), LNode.Call(CodeSymbols.Var, LNode.List(LNode.Call(CodeSymbols.Dot, LNode.List(LNode.Call(CodeSymbols.ColonColon, LNode.List(LNode.Id((Symbol)"global"), LNode.Id((Symbol)"LeMP"))).SetStyle(NodeStyle.Operator), LNode.Id((Symbol)"IMacroContext"))).SetStyle(NodeStyle.Operator), LNode.Id((Symbol)"#context"))))), body)))).SetStyle(NodeStyle.StatementBlock))).SetStyle(NodeStyle.Special));
}