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));
}
