protected internal override void CheckSemantics(AstHelper astHelper)
{
base.CheckSemantics(astHelper);
TargetType.CheckSemantics(astHelper);
Expression.CheckSemantics(astHelper);
}
/// <summary>
/// Add the current function to the scope
/// </summary>
/// <param name = "astHelper"></param>
public void AddToScope(AstHelper astHelper)
{
Name.CheckSemantics(astHelper);
ReturnTypeName.CheckSemantics(astHelper);
astHelper.Errors.Check(new SomeParametersWithTheSameNameError(Parameters, Start));
foreach (FunctionParameterExpression functionParameterExpression in Parameters)
functionParameterExpression.CheckSemantics(astHelper);
Type[] argTypes = Parameters.Select(param => param.Type).ToArray();
Type delegateType = ReturnTypeName.HasType
? MAst.GetFuncType(new List<Type>(argTypes) {Type}.ToArray())
: MAst.GetActionType(argTypes);
Pointer = MAst.Parameter(delegateType);
bool error = false;
error |= astHelper.Errors.Check(new MemberWithSameSignatureAlreadyDefinedError(
Name.Name, argTypes, astHelper, Name.Start));
error |= astHelper.Errors.Check(new VariableAlreadyDefinedError(Name.Name, astHelper, Start));
if (!error)
astHelper.Functions.Add(Name.Name, new FunctionReference(Pointer, Type, argTypes));
}
protected internal override void CheckSemantics(AstHelper astHelper)
{
TypeName.CheckSemantics(astHelper);
Name.CheckSemantics(astHelper);
_parameter = MAst.Parameter(Type);
}
protected internal override void CheckSemantics(AstHelper astHelper)
{
VariableName.CheckSemantics(astHelper);
VariableTypeName.CheckSemantics(astHelper);
AstHelper childScope = VariableTypeName.HasType
? astHelper.CreateChild(expecting: true,
expectedType: VariableTypeName.ReferencedType)
: astHelper.CreateChild(expecting: true);
Value.CheckSemantics(childScope);
bool cantInferType = astHelper.Errors.Check(new CanNotInferTypeError(Type, Value.Type, Start));
astHelper.Errors.Check(new NotAssignableError(Type, Value.Type, Start));
bool memberDeclared = astHelper.Errors.Check(
new MemberWithSameNameAlreadyDefinedError(VariableName.Name, astHelper, Start));
if (!memberDeclared)
{
if (!cantInferType)
{
Pointer = MAst.Parameter(Type, VariableName.Name);
}
else
{
// if the type can't be inferred then register the variable with null type
Pointer = MAst.Parameter(typeof (Null), VariableName.Name);
}
astHelper.Variables.Add(VariableName.Name, Pointer);
}
}
public static MAst Compile(AstHelper runtime, ICharStream stream)
{
var lexer = new TigerLexer(stream);
var tokens = new CommonTokenStream(lexer);
var parser = new TigerParser(tokens);
ProgramExpression programExpression = parser.parse();
if (parser.NumberOfSyntaxErrors > 0)
{
IEnumerable<string> errors = from e in parser.Errors
select e.ToString();
throw new SyntaxException(errors);
}
AstHelper helper = runtime.CreateChild(function: true, variables: true, types: true);
programExpression.CheckSemantics(helper);
if (helper.Errors.HasErrors)
{
throw new SemanticException(helper.Errors);
}
return programExpression.Transform();
}
protected internal override void CheckSemantics(AstHelper astHelper)
{
FunctionName.CheckSemantics(astHelper);
// initialize the scopes for each one of the arguments
var scopes = new AstHelper[Args.Count()];
for (int i = 0; i < scopes.Length; scopes[i++] = astHelper.CreateChild(expecting: true))
{
}
foreach (var item in Args.Zip(scopes, (arg, scope) => new {arg, scope}))
item.arg.CheckSemantics(item.scope);
Type[] argTypes = (from arg in Args select arg.Type).ToArray();
if (astHelper.Errors.Check(new FunctionNotDefinedError(FunctionName.Name, argTypes, astHelper.Functions,
Start))) return;
_pointer = astHelper.Functions[FunctionName.Name, argTypes];
// SPEC: The following are legal: function f(p:rec) = f(nil)
// for that reason the expected type for each one of the arguments is the
// type of the function argument (in the definition)
foreach (var item in _pointer.ArgTypes.Zip(scopes, (type, scope) => new {type, scope}))
item.scope.Expecting.Type = item.type;
}
protected internal override void CheckSemantics(AstHelper astHelper)
{
base.CheckSemantics(astHelper);
foreach (Expression arg in Args)
arg.CheckSemantics(astHelper);
}
protected internal override void CheckSemantics(AstHelper astHelper)
{
Test.CheckSemantics(astHelper);
Then.CheckSemantics(astHelper);
astHelper.Errors.Check(new IfThenBodyReturnsValueError(Then.Type, Then.Start));
}
protected internal override void CheckSemantics(AstHelper astHelper)
{
base.CheckSemantics(astHelper);
// the identifier shouldn't be a keyword
astHelper.Errors.Check(new IdentifierExpectedError(Name, Start));
}
protected internal override void CheckSemantics(AstHelper astHelper)
{
if (_checkSemanticsCalled) return;
_checkSemanticsCalled = true;
base.CheckSemantics(astHelper);
Expression.CheckSemantics(astHelper);
}
protected internal override void CheckSemantics(AstHelper astHelper)
{
base.CheckSemantics(astHelper);
Target.CheckSemantics(astHelper);
foreach (Expression index in Indexes)
index.CheckSemantics(astHelper);
}
protected internal override void CheckSemantics(AstHelper astHelper)
{
base.CheckSemantics(astHelper);
AstHelper helper = astHelper.CreateChild(expecting: true, expectedType: typeof (bool));
_innerExpression.CheckSemantics(helper);
// only void expressions can't be converted to bool
astHelper.Errors.Check(new NotBoolConvertibleError(_innerExpression.Type, Start));
}
protected internal override void CheckSemantics(AstHelper astHelper)
{
base.CheckSemantics(astHelper);
Value.CheckSemantics(astHelper);
// todo checkSemantics for the return expression class, similar to the continue/break with the assignments
_returnLabel = astHelper.ReturnScope.ReturnLabel;
}
protected internal override void CheckSemantics(AstHelper astHelper)
{
base.CheckSemantics(astHelper);
// if the type is not defined or is already a direct reference to it
if (!HasType || ReferencedType != typeof (void)) return;
if (!astHelper.Errors.Check(new MissingTypeError(TypeName, astHelper.Types, Start)))
ReferencedType = astHelper.Types[TypeName];
}
public void AddToScope(AstHelper astHelper)
{
string typeName = astHelper.Types.Contains(Name.Name) ? Name.Name + TypeUniqueId++ : Name.Name;
astHelper.Errors.Check(new TypeWithSameNameAlreadyDefinedError(Name.Name, astHelper.Types, Start));
_builder = astHelper.ModuleBuilder.DefineType(typeName, TypeAttributes.NotPublic);
// the type is added to the scope with it's name
astHelper.Types.Add(Name.Name, _builder);
}
protected internal override void CheckSemantics(AstHelper astHelper)
{
base.CheckSemantics(astHelper);
FieldName.CheckSemantics(astHelper);
var error = new FieldNotFoundError(Target.Type, FieldName.Name, Start);
_type = !astHelper.Errors.Check(error)
? error.PropertyType
: typeof (Null);
}
protected internal override void CheckSemantics(AstHelper astHelper)
{
base.CheckSemantics(astHelper);
foreach (var item in Args.Zip(Constructor.GetParameters().Select(parameter => parameter.ParameterType), (arg, type) => new {arg, type}))
{
AstHelper helper = astHelper.CreateChild(expecting: true, expectedType: item.type);
item.arg.CheckSemantics(helper);
}
}
protected internal override void CheckSemantics(AstHelper astHelper)
{
base.CheckSemantics(astHelper);
MethodName.CheckSemantics(astHelper);
foreach (Expression expression in Args) expression.CheckSemantics(astHelper);
Type[] argTypes = (from arg in Args select arg.Type).ToArray();
if (!astHelper.Errors.Check(new MethodNotFoundError(Target.Type, MethodName.Name, argTypes, Start)))
_methodInfo = Target.Type.GetMethod(MethodName.Name, argTypes);
}
protected internal override void CheckSemantics(AstHelper astHelper)
{
base.CheckSemantics(astHelper);
//Debug.Assert(!astHelper.Expecting.IsExpectingType,"A break is not allowed when we are expecting a type");
astHelper.Errors.Check(new ExpectingTypeError(Start, astHelper.Expecting));
if (! astHelper.Errors.Check(new BreakOutOfLoopScopeError(Start, astHelper.LoopScope)))
{
_target = astHelper.LoopScope.BreakLabel;
}
}
protected internal override void CheckSemantics(AstHelper astHelper)
{
base.CheckSemantics(astHelper);
Left.CheckSemantics(astHelper);
Right.CheckSemantics(astHelper);
// SPEC: Nil must be used in a context were its actual record type can be determined
// SPEC: Thus the following are ilegal: var a := nil, if nil = nil then ...
astHelper.Errors.Check(new CanNotInferTypeError(Left.Type, Right.Type, Start));
}
protected internal override void CheckSemantics(AstHelper astHelper)
{
base.CheckSemantics(astHelper);
Left.CheckSemantics(astHelper);
AstHelper helper = astHelper.CreateChild(expecting: true, expectedType: Left.Type);
Right.CheckSemantics(helper);
astHelper.Errors.Check(new NotAssignableError(Left.Type, Right.Type, Start));
}
/// <summary>
/// Comverts the expression into the corresponding
/// <see cref="System.Linq.Expressions.Expression"/>
/// </summary>
/// <param name="runtime"></param>
/// <returns></returns>
/// <exception cref="SemanticException">if there is some semantic error in the tree</exception>
public MAst Compile(AstHelper runtime)
{
AstHelper helper = runtime.CreateChild(function: true, variables: true, types: true);
CheckSemantics(helper);
if (helper.Errors.HasErrors)
{
throw new SemanticException(helper.Errors);
}
return Transform();
}
public void calls_function_in_runtime()
{
string program = "Calc()";
TigerParser parser = Mother.CreateParser(program);
var runtime = new AstHelper(null);
Expression<Func<int>> calc = () => 1;
runtime.Functions.Add("Calc", new FunctionReference(calc, typeof (int)));
Expression result = parser.parse().Compile(runtime);
Mother.Test(result, 1);
}
protected internal override void CheckSemantics(AstHelper astHelper)
{
foreach (RecordFieldNode fieldNode in Fields)
{
fieldNode.CheckSemantics(astHelper);
if (fieldNode.TypeName.HasType)
_builder.DefineField(fieldNode.FieldName.Name, fieldNode.TypeName.ReferencedType,
FieldAttributes.Public);
}
astHelper.Types.CreateType(Name.Name);
}
protected internal override void CheckSemantics(AstHelper astHelper)
{
base.CheckSemantics(astHelper);
ArrayTypeName.CheckSemantics(astHelper);
// type must be an array: type XX = array of ...
astHelper.Errors.Check(new NotAnArrayTypeError(Type, Start));
OriginalType = Type.GetElementType();
Lenght.CheckSemantics(astHelper);
astHelper.Errors.Check(new TypeMismatchedError(Lenght.Type, typeof (int), Start));
}
protected internal override void CheckSemantics(AstHelper astHelper)
{
if (!astHelper.Errors.Check(new IdentifierNotDefinedError(VariableName, astHelper.Variables, Start)))
{
_pointer = astHelper.Variables[VariableName];
_type = _pointer.Type;
}
else
{
// if the variable isn't defined, apply the null type that can be assigned
// to all the record types
_type = astHelper.Expecting.IsExpectingType ? astHelper.Expecting.Type : typeof (Null);
}
}
protected internal override void CheckSemantics(AstHelper astHelper)
{
VariableName.CheckSemantics(astHelper);
VariableTypeName.CheckSemantics(astHelper);
bool memberDeclared = astHelper.Errors.Check(new MemberWithSameNameAlreadyDefinedError(VariableName.Name, astHelper, Start));
if (!memberDeclared)
{
Pointer = System.Linq.Expressions.Expression.Parameter(Type, VariableName.Name);
astHelper.Variables.Add(VariableName.Name, Pointer);
}
}
protected internal override void CheckSemantics(AstHelper astHelper)
{
base.CheckSemantics(astHelper);
_breakLabel = MAst.Label();
_continueLabel = MAst.Label();
Test.CheckSemantics(astHelper);
AstHelper child = astHelper.CreateChild(loop: true, breakLabel: _breakLabel, continueLabel: _continueLabel);
Body.CheckSemantics(child);
astHelper.Errors.Check(new WhileBodyReturnsValueError(Body.Type, Start));
}
protected internal override void CheckSemantics(AstHelper astHelper)
{
// SPEC: The comparison operators do not associate, e.g., a=b=c is erroneous, but a=(b=c) is legal.
if (!Operator.IsComparison()) throw new InvalidOperationException();
AstHelper helper = astHelper.CreateChild(expecting: true);
Left.CheckSemantics(helper);
Right.CheckSemantics(helper);
// SPEC: Nil must be used in a context were its actual record type can be determined
// SPEC: Thus the following are ilegal: var a := nil, if nil = nil then ...
astHelper.Errors.Check(new CanNotInferTypeError(Left.Type, Right.Type, Start));
astHelper.Errors.Check(new OperatorNotDefinedError(Left.Type, Right.Type, Operator, Start));
}
public static AstHelper Default(ModuleBuilder moduleBuilder)
{
var result = new AstHelper(moduleBuilder);
result.Types.Add("int", typeof (int));
result.Types.Add("string", typeof (string));
result.Types.Add("bool", typeof (bool));
Expression<Func<int, string>> str = a => a.ToString(CultureInfo.InvariantCulture);
result.Functions.Add("str", new FunctionReference(str, typeof (string), typeof (int)));
// function ord(s : string) : int
// Return the ASCII value of the first character of s, or 1 if s is empty.
Expression<Func<string, int>> ord = a => string.IsNullOrEmpty(a) ? -1 : (int) a[0];
result.Functions.Add("ord", new FunctionReference(ord, typeof (int), typeof (string)));
// function chr(i : int) : string
// Return a single-character string for ASCII value i. Terminate program if i is out of range.
// todo when chr is called terminate the program if i is out of range
Expression<Func<int, string>> chr = a => ((char) a).ToString();
result.Functions.Add("chr", new FunctionReference(chr, typeof (string), typeof (int)));
// function size(s : string) : int
// Return the number of characters in s.
Expression<Func<string, int>> size = a => a.Length;
result.Functions.Add("size", new FunctionReference(size, typeof (int), typeof (string)));
// function substring(s:string,f:int,n:int):string
// Return the substring of s starting at the character f (first character is numbered zero) and going for n characters.
Expression<Func<string, int, int, string>> substring = (s, f, n) => s.Substring(f, n);
result.Functions.Add("substring",
new FunctionReference(substring, typeof (int), typeof (string), typeof (int),
typeof (int)));
// function concat (s1:string, s2:string):string
// Return a new string consisting of s1 followed by s2.
Expression<Func<string, string, string>> concat = (s1, s2) => s1 + s2;
result.Functions.Add("concat", new FunctionReference(concat, typeof (string), typeof (string), typeof (string)));
// function not(i : int) : int
// Return 1 if i is zero, 0 otherwise.
Expression<Func<int, int>> not = i => i == 0 ? 1 : 0;
result.Functions.Add("not", new FunctionReference(not, typeof (int), typeof (int)));
return result;
}
protected internal override void CheckSemantics(AstHelper astHelper)
{
// SPEC: The comparison operators do not associate, e.g., a=b=c is erroneous, but a=(b=c) is legal.
if (!Operator.IsComparison())
{
throw new InvalidOperationException();
}
AstHelper helper = astHelper.CreateChild(expecting: true);
Left.CheckSemantics(helper);
Right.CheckSemantics(helper);
// SPEC: Nil must be used in a context were its actual record type can be determined
// SPEC: Thus the following are ilegal: var a := nil, if nil = nil then ...
astHelper.Errors.Check(new CanNotInferTypeError(Left.Type, Right.Type, Start));
astHelper.Errors.Check(new OperatorNotDefinedError(Left.Type, Right.Type, Operator, Start));
}
protected internal override void CheckSemantics(AstHelper astHelper)
{
AstHelper helper = astHelper.CreateChild(function: true, variables: true, types: true);
// add all type builders to the scope in case of recursive type calls
foreach (IAddToScope typeDeclarationNode in TypeDeclarations.OfType <IAddToScope>())
{
typeDeclarationNode.AddToScope(helper);
}
var error = new CircularTypeReferencesError(TypeDeclarations, Start);
astHelper.Errors.Check(error);
// define other types
foreach (TypeDeclarationNode typeDeclarationNode in error.OrderedTypes)
{
typeDeclarationNode.CheckSemantics(helper);
}
// add all functions to the scope in case of recursive calls
foreach (FunctionDefinitionExpression functionDefinitionExpression in FunctionDefinitions)
{
functionDefinitionExpression.AddToScope(helper);
}
foreach (VariableDeclarationBase variableDeclarationExpression in VariableDeclarations)
{
variableDeclarationExpression.CheckSemantics(helper);
}
foreach (FunctionDefinitionExpression functionDefinitionExpression in FunctionDefinitions)
{
functionDefinitionExpression.CheckSemantics(helper);
}
Body.CheckSemantics(helper);
IEnumerable <ParameterExpression> variables = from variable in VariableDeclarations select variable.Pointer;
IEnumerable <ParameterExpression> functions = from function in FunctionDefinitions select function.Pointer;
// calculate the closure that will be used when we're generating the expression
_closure = variables.Union(functions);
}
protected internal override void CheckSemantics(AstHelper astHelper)
{
TypeName.CheckSemantics(astHelper);
string result = "#result";
_inner = new LetInExpression
{
VariableDeclarations = new List <VariableDeclarationBase>
{
new VariableDeclarationExpression
{
VariableName = new MemberIdentifierNode {
Name = result
},
Value = new NewExpression(TypeName.ReferencedType)
}
},
Body = new ListSemiExpression(from field in Fields
select new AssignExpression
{
Left = new FieldAccessExpression
{
FieldName = field.FieldName,
Target = new VariableAccessExpression
{
VariableName = result
}
},
Right = field.Value,
Start = field.Start
})
{
new VariableAccessExpression
{
VariableName = result
}
}
};
_inner.CheckSemantics(astHelper);
}
/// <summary>
/// returns the expression that this program represents.
/// </summary>
/// <returns></returns>
public MAst Compile()
{
var assemblyName = new AssemblyName(Guid.NewGuid().ToString())
{
Version = new Version(1, 0)
};
AssemblyBuilder assemblyBuilder = AppDomain.CurrentDomain.DefineDynamicAssembly(assemblyName,
AssemblyBuilderAccess.Run);
ModuleBuilder moduleBuilder = assemblyBuilder.DefineDynamicModule("Program");
var ast = new AstHelper(moduleBuilder);
ast.Types.Add("int", typeof(int));
ast.Types.Add("string", typeof(string));
ast.Types.Add("bool", typeof(bool));
Program.CheckSemantics(ast);
return(Transform());
}
public AstHelper CreateChild(bool function = false, bool variables = false, bool types = false,
bool expecting = false, Type expectedType = null,
bool loop = false, LabelTarget breakLabel = null, LabelTarget continueLabel = null,
bool returning = false, LabelTarget returnLabel = null)
{
var result = new AstHelper
{
ModuleBuilder = ModuleBuilder,
Errors = Errors,
Expecting = expecting
? expectedType != null ? new Expecting(expectedType) : new Expecting()
: Expecting,
Functions = function ? (FunctionScope)Functions.GetChild() : Functions,
Variables = variables
? (VariableScope)Variables.GetChild()
: Variables,
Types = types ? (TypeScope)Types.GetChild() : Types,
LoopScope = loop ? new LoopScope(breakLabel, continueLabel) : LoopScope,
ReturnScope = returning ? new ReturnScope(returnLabel) : ReturnScope
};
return(result);
}
protected internal override void CheckSemantics(AstHelper astHelper)
{
base.CheckSemantics(astHelper);
astHelper.Errors.Check(new TypeWithSameNameAlreadyDefinedError(Name, astHelper.Types, Start));
}
protected internal override void CheckSemantics(AstHelper astHelper)
{
base.CheckSemantics(astHelper);
var from = From.ProtectSemantics();
var to = To.ProtectSemantics();
from.CheckSemantics(astHelper);
to.CheckSemantics(astHelper);
bool error = false;
error |= astHelper.Errors.Check(new NotAssignableError(typeof(int), from.Type, VariableName.Start));
error |= astHelper.Errors.Check(new NotAssignableError(typeof(int), to.Type, VariableName.Start));
if (error)
{
return;
}
_implementation = new LetInExpression
{
VariableDeclarations = new List <VariableDeclarationBase>
{
new VariableDeclarationExpression
{
VariableName =
new MemberIdentifierNode
{
Name = VariableName.Name
},
Value = from
}
},
Body = new ListSemiExpression
{
new WhileExpression
{
Test = new LogicalBinaryOperationExpression
{
Left = new VariableAccessExpression
{
VariableName =
VariableName.Name
},
Right = to,
Operator = TigerOperator.LessThanOrEqual
},
Body = new ListSemiExpression
{
Body,
new UnaryOperationExpression
{
Expression =
new VariableAccessExpression
{
VariableName =
VariableName.Name
},
Operator =
TigerOperator.PreIncrementAssign
},
new EmptyExpression()
}
}
}
};
_implementation.CheckSemantics(astHelper);
}
protected internal override void CheckSemantics(AstHelper astHelper)
{
base.CheckSemantics(astHelper);
var collectionWrapper = Collection.ProtectSemantics();
collectionWrapper.CheckSemantics(astHelper);
if (!astHelper.Errors.Check(new NotEnumerableError(collectionWrapper.Type, Collection.Start)))
{
Type collectionType = TypeUtils.GetCollectionType(collectionWrapper.Type);
string enumerator = "#enumerator" + _uniqueId++;
_implementation = new LetInExpression
{
VariableDeclarations = new List <VariableDeclarationBase>
{
new VariableDeclarationExpression
{
VariableName = new MemberIdentifierNode
{
Name = enumerator
},
Value = new MethodCallExpression
{
MethodName = new IdentifierNode
{
Name = "GetEnumerator"
},
Target = collectionWrapper
}
},
new VariableDeclarationBase
{
VariableName = new MemberIdentifierNode
{
Name = Identifier.Name
},
VariableTypeName = new TypeReferenceNode(collectionType)
}
},
Body = new ListSemiExpression
{
new WhileExpression
{
Test = new MethodCallExpression
{
Target = new VariableAccessExpression
{
VariableName = enumerator
},
MethodName = new IdentifierNode
{
Name = "MoveNext"
}
},
Body = new ListSemiExpression
{
new AssignExpression
{
Left = new VariableAccessExpression
{
VariableName = Identifier.Name
},
Right = new TypeCastExpression
{
Expression = new FieldAccessExpression
{
Target = new VariableAccessExpression
{
VariableName = enumerator
},
FieldName = new IdentifierNode
{
Name = "Current"
}
},
TargetType = collectionType
}
},
Body
}
}
}
};
_implementation.CheckSemantics(astHelper);
}
}
protected internal override void CheckSemantics(AstHelper astHelper)
{
base.CheckSemantics(astHelper);
Expression.CheckSemantics(astHelper);
}
protected internal override void CheckSemantics(AstHelper astHelper)
{
base.CheckSemantics(astHelper);
_expecting = astHelper.Expecting;
}
public static MAst Compile(AstHelper runtime, string program)
{
var stream = new ANTLRStringStream(program);
return(Compile(runtime, stream));
}
public static MAst CompileFile(AstHelper runtime, string fileName)
{
var stream = new ANTLRFileStream(fileName);
return(Compile(runtime, stream));
}
protected internal override void CheckSemantics(AstHelper astHelper)
{
Program.CheckSemantics(astHelper);
}
public MAst Compile(AstHelper runtime)
{
Program.CheckSemantics(runtime);
return(Transform());
}
protected internal override void CheckSemantics(AstHelper astHelper)
{
string lenght = "#length" + uniqueId++;
string result = "#result" + uniqueId++;
string forVarName = "#i" + uniqueId++;
var valueEnclosed = InitialValue.ProtectSemantics();
_implementation = new LetInExpression
{
VariableDeclarations = new List <VariableDeclarationBase>
{
new VariableDeclarationExpression
{
VariableName =
new MemberIdentifierNode
{
Name = lenght
},
Value = Lenght
},
new VariableDeclarationExpression
{
VariableName =
new MemberIdentifierNode
{
Name = result
},
Value = new ArrayInitializationExpression
{
ArrayTypeName =
ArrayTypeName,
Lenght =
new VariableAccessExpression
{
VariableName =
lenght
}
}
}
},
Body = new ListSemiExpression
{
new ForLoopExpression
{
VariableName = new IdentifierNode {
Name = forVarName
},
From = new IntLiteralExpression(0),
To = new BinaryOperationExpression
{
Operator = TigerOperator.Subtract,
Left = new VariableAccessExpression
{
VariableName = lenght
},
Right = new IntLiteralExpression(1)
},
Body = new AssignExpression
{
Left = new ArrayIndexExpression
{
Indexes = new[]
{
new VariableAccessExpression
{
VariableName
=
forVarName
}
},
Target =
new VariableAccessExpression
{
VariableName =
result
}
},
Right = valueEnclosed
}
},
new VariableAccessExpression {
VariableName = result
}
}
};
_implementation.CheckSemantics(astHelper);
}
/// <summary>
/// this method is executed before the generation, should
/// resolve all variable references and populate the scopes.
/// If some error is found the error should be added to the
/// collection.
/// </summary>
/// <param name = "astHelper"></param>
protected internal virtual void CheckSemantics(AstHelper astHelper)
{
// todo refactor the ModuleBuilder and the ErrorSet as parameters of CheckSemantic
}
