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StringToValueContainer.cs
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StringToValueContainer.cs
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using System;
namespace ALang
{
/// <summary>
/// Stores constant value as a string.
/// </summary>
public sealed class StringToValue
{
public string TypeName
{
get { return m_typeName; }
set
{
m_typeName = value;
m_typeId = LanguageSymbols.Instance.GetDefaultTypeId(m_typeName);
}
}
public string StringVal { get; set; }
public SByte GetInt8()
{
CheckValue(typeof(SByte).Name);
try
{
return SByte.Parse(StringVal);
}
catch
{
Compilation.WriteError(string.Format("Can't parse '{0}' of type '{1}' to type '{2}'",
StringVal, TypeName, "Int8"), -1);
throw new Exception(); //This code only for compiler. Exception is generated at Compilation.WriteError
}
}
public Int16 GetInt16()
{
CheckValue(typeof(Int16).Name);
try
{
return Int16.Parse(StringVal);
}
catch
{
Compilation.WriteError(string.Format("Can't parse '{0}' of type '{1}' to type '{2}'",
StringVal, TypeName, "Int16"), -1);
throw new Exception(); //This code only for compiler. Exception is generated at Compilation.WriteError
}
}
public Int32 GetInt32()
{
CheckValue(typeof(Int32).Name);
try
{
return Int32.Parse(StringVal);
}
catch
{
Compilation.WriteError(string.Format("Can't parse '{0}' of type '{1}' to type '{2}'",
StringVal, TypeName, "Int32"), -1);
throw new Exception(); //This code only for compiler. Exception is generated at Compilation.WriteError
}
}
public Int64 GetInt64()
{
CheckValue(typeof(Int64).Name);
try
{
return Int64.Parse(StringVal);
}
catch
{
Compilation.WriteError(string.Format("Can't parse '{0}' of type '{1}' to type '{2}'",
StringVal, TypeName, "Int32"), -1);
throw new Exception(); //This code only for compiler. Exception is generated at Compilation.WriteError
}
}
public Double GetDouble()
{
CheckValue(typeof(Double).Name);
try
{
return Double.Parse(StringVal);
}
catch
{
Compilation.WriteError(string.Format("Can't parse '{0}' of type '{1}' to type '{2}'",
StringVal, TypeName, "Double"), -1);
throw new Exception(); //This code only for compiler. Exception is generated at Compilation.WriteError
}
}
public Single GetSingle()
{
CheckValue(typeof(Single).Name);
try
{
return Single.Parse(StringVal);
}
catch
{
Compilation.WriteError(string.Format("Can't parse '{0}' of type '{1}' to type '{2}'",
StringVal, TypeName, "Single"), -1);
throw new Exception(); //This code only for compiler. Exception is generated at Compilation.WriteError
}
}
public String GetString()
{
CheckValue(typeof(String).Name);
return StringVal;
}
public Boolean GetBoolean()
{
CheckValue(typeof(Boolean).Name);
try
{
return Boolean.Parse(StringVal);
}
catch
{
Compilation.WriteError(string.Format("Can't parse '{0}' of type '{1}' to type '{2}'",
StringVal, TypeName, "Boolean"), -1);
throw new Exception(); //This code only for compiler. Exception is generated at Compilation.WriteError
}
}
public void WriteBytes(ByteConverter converter)
{
switch ((LanguageSymbols.DefTypesName.Index) m_typeId)
{
case LanguageSymbols.DefTypesName.Index.Int8:
converter.CastByte(GetInt8());
break;
case LanguageSymbols.DefTypesName.Index.Int16:
converter.CastInt16(GetInt16());
break;
case LanguageSymbols.DefTypesName.Index.Int32:
converter.CastInt32(GetInt32());
break;
case LanguageSymbols.DefTypesName.Index.Int64:
converter.CastInt64(GetInt64());
break;
case LanguageSymbols.DefTypesName.Index.Double:
converter.CastDouble(GetDouble());
break;
case LanguageSymbols.DefTypesName.Index.Single:
converter.CastSingle(GetSingle());
break;
case LanguageSymbols.DefTypesName.Index.String:
converter.CastString(GetString());
break;
case LanguageSymbols.DefTypesName.Index.Bool:
converter.CastBoolean(GetBoolean());
break;
}
}
private void CheckValue(string cSharpType)
{
Compilation.Assert(!string.IsNullOrEmpty(m_typeName), "Can't cast unknown type to value of type" + cSharpType,
-1);
Compilation.Assert(!string.IsNullOrEmpty(StringVal), "Can't cast empty string to value of type" + cSharpType,
-1);
var lang = LanguageSymbols.Instance;
if (lang.GetDefaultTypeId(lang.GetTypeNameByCSharpTypeName(cSharpType)) != m_typeId)
{
Compilation.WriteError(string.Format("Can't cast from type {0} to CSharp type {1}", m_typeName, cSharpType),
-1);
}
}
private string m_typeName;
private sbyte m_typeId;
}
}