/* define a variable. Ident must be registered */
struct Value *VariableDefine(struct ParseState *Parser, char *Ident, struct Value *InitValue, struct ValueType *Typ, int MakeWritable)
{
struct Value *AssignValue;
if (InitValue != NULL)
AssignValue = VariableAllocValueAndCopy(Parser, InitValue, TopStackFrame == NULL);
else
AssignValue = VariableAllocValueFromType(Parser, Typ, MakeWritable, NULL, TopStackFrame == NULL);
AssignValue->IsLValue = MakeWritable;
if (!TableSet((TopStackFrame == NULL) ? &GlobalTable : &TopStackFrame->LocalTable, Ident, AssignValue, Parser ? ((char *)Parser->FileName) : NULL, Parser ? Parser->Line : 0, Parser ? Parser->CharacterPos : 0))
ProgramFail(Parser, "'%s' is already defined", Ident);
return AssignValue;
}
/* define a variable. Ident must be registered */
struct Value *VariableDefine(struct ParseState *Parser, char *Ident, struct Value *InitValue, struct ValueType *Typ, int MakeWritable)
{
struct Value *AssignValue;
short int ScopeLevel = Parser ? Parser->ScopeLevel : -1;
//~ fprintf(stderr, "def %s %d\n", Ident, ScopeLevel);
if (InitValue != NULL)
AssignValue = VariableAllocValueAndCopy(Parser, InitValue, TopStackFrame == NULL);
else
AssignValue = VariableAllocValueFromType(Parser, Typ, MakeWritable, NULL, TopStackFrame == NULL);
AssignValue->IsLValue = MakeWritable;
AssignValue->ScopeLevel = ScopeLevel;
AssignValue->OutOfScope = 0;
struct Table * currentTable = (TopStackFrame == NULL) ? &GlobalTable : &TopStackFrame->LocalTable;
struct Value * ExistingValue;
if (TableGet(currentTable, Ident, &ExistingValue, NULL, NULL, NULL))
{
if (ExistingValue->OutOfScope)
{
//~ fprintf(stderr, "reusing %s\n", Ident);
// not sure how to delete properly, so...
// throw the old copy away and hope it's cleaned up at VariableStackFramePop
TableDeleteStack(currentTable, Ident);
}
}
if (!TableSet(currentTable, Ident, AssignValue, Parser ? ((char *)Parser->FileName) : NULL, Parser ? Parser->Line : 0, Parser ? Parser->CharacterPos : 0))
ProgramFail(Parser, "'%s' is already defined", Ident);
return AssignValue;
}