//-----------------------------------------------------------
//<id>//
public void Visit(Identifier node, int i)
{
var variableName = node.AnchorToken.Lexeme;
if (i == 1)
{
if (GlobalVarsTable.Contains(variableName))
{
throw new SemanticError(
"Duplicated var: " + variableName,
node.AnchorToken);
}
else
{
GlobalVarsTable[variableName] = "Global Var";
}
}
else if (i == 2)
{
if (FunctionTable.Contains(variableName))
{
throw new SemanticError(
"Duplicated function: " + variableName,
node.AnchorToken);
}
else
{
currentFunc = variableName;
FunctionTable[variableName] = new GFuncStruct("u", 0, new FunContainer());
}
}
}
//-----------------------------------------------------------
//<id>//
public void Visit(Identifier node, char i)
{
var variableName = node.AnchorToken.Lexeme;
if (i.Equals('f'))
{
if (FunctionTable.Contains(variableName))
{
currentFunc = variableName;
FunMethods[variableName] = new FunContainer();
}
}
else if (i.Equals('p'))
{
var fctemp = FunMethods[currentFunc];
fctemp.ParticularFunction[variableName] = new DataOfFunc("param", parameterCounter);
FunMethods[currentFunc] = fctemp;
parameterCounter++;
}
else if (i.Equals('v'))
{
var fctemp = FunMethods[currentFunc];
if (fctemp.ParticularFunction.Contains(variableName))
{
throw new SemanticError(
"Duplicated var: " + variableName,
node.AnchorToken);
}
else
{
fctemp.ParticularFunction[variableName] = new DataOfFunc("local", -1);
FunMethods[currentFunc] = fctemp;
}
}
else if (i.Equals('s'))
{
var fctemp = FunMethods[currentFunc];
if (!fctemp.ParticularFunction.Contains(variableName) && !GlobalVarsTable.Contains(variableName))
{
throw new SemanticError(
"Undeclared var: " + variableName,
node.AnchorToken);
}
}
else if (i.Equals('c') || i.Equals('q'))
{
var fctemp = FunMethods[currentFunc];
if (!fctemp.ParticularFunction.Contains(variableName) && !GlobalVarsTable.Contains(variableName))
{
throw new SemanticError(
"Undeclared var: " + variableName,
node.AnchorToken);
}
}
}
//-----------------------------------------------------------
//<decrease>//
public void Visit(Decrease node, char i)
{
var variableName = node.AnchorToken.Lexeme;
var fctemp = FunMethods[currentFunc];
if (!fctemp.ParticularFunction.Contains(variableName) && !GlobalVarsTable.Contains(variableName))
{
throw new SemanticError(
"Undeclared var: " + variableName,
node.AnchorToken);
}
}