void Function_success_when_some_param_name_exist_in_shallow()
{
var name = new IdentifierToken("SendRequest", default);
var scope = new SymbolScope();
scope.AddSymbol(new VariableSymbol("length1", false, false, DataType.Double));
var param1 = new FunctionParamAst(null, new IdentifierToken("length1", default),
new OperatorToken(Operator.Colon, default), new IdentifierToken("int", default));
var param2 = new FunctionParamAst(null, new IdentifierToken("length2", default),
new OperatorToken(Operator.Colon, default), new IdentifierToken("int", default));
var paramList = new FunctionParamListAst(new FunctionParamAst[] { param1, param2 });
var bodyBlock = new Mock <BlockStatementAst>().Object;
var ast = new FunctionAst(
new KeywordToken(Keyword.Fn, default), name, new OperatorToken(Operator.LeftParen, default),
paramList, new OperatorToken(Operator.RightParen, default),
new OperatorToken(Operator.Arrow, default), returnType: new IdentifierToken("int", default),
bodyBlock
);
var generator = ConfigureGenerator(scope, mock =>
{
mock.Setup(p => p.ProcessBlockStatement(bodyBlock, It.IsAny <bool>())).Returns(true);
});
generator.ProcessFunction(ast);
}
public SymbolImplementation BuildMethod(SourceMethodDefinitionSymbol methodSymbol)
{
var methodBody = methodSymbol.Syntax.Body;
var symbolTable = (ISymbolTable)methodSymbol.Parent;
_rootScope = new SymbolScope(symbolTable);
_currentScope = _rootScope;
var symbolContext = methodSymbol;
var implementationNode = methodBody;
var statements = new List <BoundStatement>();
var statementBuilder = new StatementBinder(this, symbolContext, _diagnostics);
if (symbolContext.Parameters != null)
{
int parameterCount = symbolContext.Parameters.Length;
for (int paramIndex = 0; paramIndex < parameterCount; paramIndex++)
{
_currentScope.AddSymbol(symbolContext.Parameters[paramIndex]);
}
}
foreach (var statementNode in implementationNode.Statements)
{
var statement = statementBuilder.BuildStatement(statementNode);
if (statement != null)
{
statements.Add(statement);
}
}
return(new SymbolImplementation(statements.ToImmutableArray(), _rootScope));
}
void ProcessCallExpression_returns_returnType_when_ok()
{
var scope = new SymbolScope();
var name = new IdentifierToken("print", default);
var funcSymbol = new FunctionSymbol(name.Value, DataType.Long, // return
new DataType[] { DataType.Double, DataType.Double }); // need
scope.AddSymbol(funcSymbol);
var param1 = new Mock <ExpressionAst>().Object;
var param2 = new Mock <ExpressionAst>().Object;
var callParamList = new CallParamListAst(new[] { param1, param2 });
var ast = new CallExpressionAst(
name, new OperatorToken(Operator.LeftParen, default), callParamList,
new OperatorToken(Operator.RightParen, default));
var generator = ConfigureGenerator(scope, mock =>
{
mock.Setup(p => p.ProcessExpression(param1)).Returns(DataType.Double); // provide
mock.Setup(p => p.ProcessExpression(param2)).Returns(DataType.Double); // provide
});
Assert.Equal(DataType.Long, generator.ProcessCallExpression(ast));
}
void ProcessCallExpression_throw_when_param_number_not_match()
{
var scope = new SymbolScope();
var name = new IdentifierToken("print", default);
var funcSymbol = new FunctionSymbol(name.Value, DataType.Long, new DataType[] { DataType.Long });
scope.AddSymbol(funcSymbol);
var param1 = new Mock <ExpressionAst>().Object;
var param2 = new Mock <ExpressionAst>().Object;
var callParamList = new CallParamListAst(new[] { param1, param2 });
var ast = new CallExpressionAst(
name, new OperatorToken(Operator.LeftParen, default), callParamList,
new OperatorToken(Operator.RightParen, default));
var generator = ConfigureGenerator(scope, mock =>
{
mock.Setup(p => p.ProcessExpression(param1)).Returns(DataType.Long);
mock.Setup(p => p.ProcessExpression(param2)).Returns(DataType.Long);
});
Assert.Throws <SemanticException>(() => generator.ProcessCallExpression(ast));
}
void Function_success_and_write_self_and_params_to_symbol_table()
{
var name = new IdentifierToken("SendRequest", default);
var scope = new SymbolScope();
scope.AddSymbol(new VariableSymbol("lll3", false, false, DataType.Long));
var param1 = new FunctionParamAst(null, new IdentifierToken("length1", default),
new OperatorToken(Operator.Colon, default), new IdentifierToken("int", default));
var paramList = new FunctionParamListAst(new FunctionParamAst[] { param1 });
var functionBlock = new Mock <BlockStatementAst>().Object;
var ast = new FunctionAst(
new KeywordToken(Keyword.Fn, default), name, new OperatorToken(Operator.LeftParen, default),
paramList, new OperatorToken(Operator.RightParen, default),
new OperatorToken(Operator.Arrow, default), returnType: new IdentifierToken("int", default),
functionBlock
);
var generator = ConfigureGenerator(scope, mock =>
{
mock.Setup(p => p.ProcessBlockStatement(functionBlock, It.IsAny <bool>())).Returns(false);
});
generator.ProcessFunction(ast);
// Assert
// self
Assert.True(scope.FindSymbolShallow(ast.Name.Value, out Symbol symx));
var funcSym = Assert.IsType <FunctionSymbol>(symx);
Assert.Equal(DataType.Long, funcSym.ReturnType);
Assert.Equal(DataType.Long, funcSym.ParamTypes.Single());
// params
Assert.True(scope.FindSymbolShallow(name.Value, out Symbol s0));
scope = (s0 as FunctionSymbol).BodyBlockScope;
Assert.True(scope.FindSymbolShallow(param1.Name.Value, out Symbol sym1));
var var1 = Assert.IsType <VariableSymbol>(sym1);
Assert.Equal(param1.IsConstant, var1.IsConstant);
Assert.False(var1.IsGlobal);
Assert.Equal(DataType.Long, var1.Type);
Assert.Equal(param1.Name.Value, var1.Name);
}
void ProcessIdentExpression_returns_type_when_constvar_ok()
{
var scope = new SymbolScope();
var funcSymbol = new VariableSymbol("aCounter", true, false, DataType.Long);
scope.AddSymbol(funcSymbol);
var name = new IdentifierToken("aCounter", default);
var ast = new IdentExpressionAst(name);
var generator = ConfigureGenerator(scope, mock =>
{
});
Assert.Equal(DataType.Long, generator.ProcessIdentExpression(ast));
}
void ProcessIdentExpression_throws_when_symbol_not_var_or_const()
{
var scope = new SymbolScope();
var funcSymbol = new FunctionSymbol("aCounter", DataType.Void, new DataType[0]);
scope.AddSymbol(funcSymbol);
var name = new IdentifierToken("aCounter", default);
var ast = new IdentExpressionAst(name);
var generator = ConfigureGenerator(scope, mock =>
{
});
Assert.Throws <SemanticException>(() => generator.ProcessIdentExpression(ast));
}
void ProcessLetDeclaration_throws_when_symbol_exist_in_shallow()
{
var existingSymbol = new VariableSymbol("webClient", false, false, DataType.Long);
var scope = new SymbolScope();
scope.AddSymbol(existingSymbol);
var name = new IdentifierToken("webClient", default);
var ast = new LetDeclarationStatementAst(
new KeywordToken(Keyword.Let, default), name, new OperatorToken(Operator.Colon, default),
new IdentifierToken("int", default), new OperatorToken(Operator.Assign, default),
initialExpression: null, new OperatorToken(Operator.Semicolon, default));
var generator = ConfigureGenerator(scope, mock =>
{
});
Assert.Throws <SemanticException>(() => generator.ProcessLetDeclarationStatement(ast));
}
void ProcessCallExpression_throws_when_symbol_is_not_function()
{
var scope = new SymbolScope();
var name = new IdentifierToken("print", default);
var varSymbol = new VariableSymbol(name.Value, true, false, DataType.Long);
scope.AddSymbol(varSymbol);
var ast = new CallExpressionAst(
name, new OperatorToken(Operator.LeftParen, default), null,
new OperatorToken(Operator.RightParen, default));
var generator = ConfigureGenerator(scope, mock =>
{
});
Assert.Throws <SemanticException>(() => generator.ProcessCallExpression(ast));
}
void ProcessAssignExpression_throws_when_symbol_is_function()
{
var scope = new SymbolScope();
var name = new IdentifierToken("today", default);
var funcSymbol = new FunctionSymbol(name.Value, DataType.Long, new DataType[0]);
scope.AddSymbol(funcSymbol);
var ast = new AssignExpressionAst(
name,
new OperatorToken(Operator.Assign, default),
new Mock <ExpressionAst>().Object);
var generator = ConfigureGenerator(scope, mock =>
{
});
Assert.Throws <SemanticException>(() => generator.ProcessAssignExpression(ast));
}
void ProcessCallExpression_throw_when_provide_no_param_to_call_function_need_param()
{
var scope = new SymbolScope();
var name = new IdentifierToken("print", default);
var funcSymbol = new FunctionSymbol(name.Value, DataType.Long, new DataType[] { DataType.Long });
scope.AddSymbol(funcSymbol);
var ast = new CallExpressionAst(
name, new OperatorToken(Operator.LeftParen, default), null,
new OperatorToken(Operator.RightParen, default));
var generator = ConfigureGenerator(scope, mock =>
{
});
Assert.Throws <SemanticException>(() => generator.ProcessCallExpression(ast));
}
void ProcessAssignExpression_throws_when_symbol_is_constant()
{
var scope = new SymbolScope();
var name = new IdentifierToken("today", default);
var constSymbol = new VariableSymbol(name.Value, true, true, DataType.Double);
scope.AddSymbol(constSymbol);
var ast = new AssignExpressionAst(
name,
new OperatorToken(Operator.Assign, default),
new Mock <ExpressionAst>().Object);
var generator = ConfigureGenerator(scope, mock =>
{
});
Assert.Throws <SemanticException>(() => generator.ProcessAssignExpression(ast));
}
void ProcessCallExpression_returns_returnType_when_0_0()
{
var scope = new SymbolScope();
var name = new IdentifierToken("print", default);
var funcSymbol = new FunctionSymbol(name.Value, DataType.Double, // return
new DataType[] { }); // need
scope.AddSymbol(funcSymbol);
var ast = new CallExpressionAst(
name, new OperatorToken(Operator.LeftParen, default), null,
new OperatorToken(Operator.RightParen, default));
var generator = ConfigureGenerator(scope, mock =>
{
});
Assert.Equal(DataType.Double, generator.ProcessCallExpression(ast));
}
void Function_throws_when_function_name_exist_deep()
{
var name = new IdentifierToken("SendRequest", default);
var scope = new SymbolScope();
scope.AddSymbol(new VariableSymbol(name.Value, true, false, DataType.Long));
var ast = new FunctionAst(
new KeywordToken(Keyword.Fn, default), name, new OperatorToken(Operator.LeftParen, default),
functionParamList: null, new OperatorToken(Operator.RightParen, default),
new OperatorToken(Operator.Arrow, default), new IdentifierToken("int", default),
new Mock <BlockStatementAst>().Object
);
var generator = ConfigureGenerator(scope, mock =>
{
});
Assert.Throws <SemanticException>(() => generator.ProcessFunction(ast));
}
void ProcessAssignExpression_throws_when_expr_type_not_match_variable_type()
{
var scope = new SymbolScope();
var name = new IdentifierToken("today", default);
var constSymbol = new VariableSymbol(name.Value, true, isConstant: false, DataType.Double);
scope.AddSymbol(constSymbol);
var expr = new Mock <ExpressionAst>().Object;
var ast = new AssignExpressionAst(
name,
new OperatorToken(Operator.Assign, default),
expr);
var generator = ConfigureGenerator(scope, mock =>
{
mock.Setup(p => p.ProcessExpression(expr)).Returns(DataType.Long);
});
Assert.Throws <SemanticException>(() => generator.ProcessAssignExpression(ast));
}
void ProcessAssignExpression_returns_DataTypeVoid_when_ok()
{
var scope = new SymbolScope();
var name = new IdentifierToken("today", default);
var constSymbol = new VariableSymbol(name.Value, true, isConstant: false, DataType.Double);
scope.AddSymbol(constSymbol);
var expr = new Mock <ExpressionAst>().Object;
var ast = new AssignExpressionAst(
name,
new OperatorToken(Operator.Assign, default),
expr);
var generator = ConfigureGenerator(scope, mock =>
{
mock.Setup(p => p.ProcessExpression(expr)).Returns(DataType.Double);
});
Assert.Equal(DataType.Void, generator.ProcessAssignExpression(ast));
}
private SymbolImplementation BuildImplementation(ISymbolTable symbolTable, CodeMemberSymbol symbolContext,
BlockStatementNode implementationNode, bool addAllParameters)
{
rootScope = new SymbolScope(symbolTable);
currentScope = rootScope;
List <Statement> statements = new List <Statement>();
StatementBuilder statementBuilder = new StatementBuilder(this, symbolContext, errorHandler, options);
if (symbolContext.Parameters != null)
{
int parameterCount = symbolContext.Parameters.Count;
if (addAllParameters == false)
{
// For property getters (including indexers), we don't add the last parameter,
// which happens to be the "value" parameter, which only makes sense
// for the setter.
parameterCount--;
}
for (int paramIndex = 0; paramIndex < parameterCount; paramIndex++)
{
currentScope.AddSymbol(symbolContext.Parameters[paramIndex]);
}
}
if (symbolContext.Type == SymbolType.Constructor &&
(((ConstructorSymbol)symbolContext).Visibility & MemberVisibility.Static) == 0)
{
Debug.Assert(symbolContext.Parent is ClassSymbol);
if (((ClassSymbol)symbolContext.Parent).BaseClass != null)
{
BaseInitializerExpression baseExpr = new BaseInitializerExpression();
ConstructorDeclarationNode ctorNode = (ConstructorDeclarationNode)symbolContext.ParseContext;
if (ctorNode.BaseArguments != null)
{
ExpressionBuilder expressionBuilder =
new ExpressionBuilder(this, symbolContext, errorHandler, options);
Debug.Assert(ctorNode.BaseArguments is ExpressionListNode);
ICollection <Expression> args =
expressionBuilder.BuildExpressionList((ExpressionListNode)ctorNode.BaseArguments);
foreach (Expression paramExpr in args)
{
baseExpr.AddParameterValue(paramExpr);
}
}
statements.Add(new ExpressionStatement(baseExpr));
}
}
foreach (StatementNode statementNode in implementationNode.Statements)
{
Statement statement = statementBuilder.BuildStatement(statementNode);
if (statement != null)
{
statements.Add(statement);
}
}
string thisIdentifier = "this";
if (symbolContext.Type == SymbolType.AnonymousMethod)
{
thisIdentifier = "$this";
}
return(new SymbolImplementation(statements, rootScope, thisIdentifier));
}
void ILocalSymbolTable.AddSymbol(LocalSymbol symbol)
{
Debug.Assert(currentScope != null);
currentScope.AddSymbol(symbol);
}