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Added structs and unions, more work on scopes and expressions

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git-svn-id: svn://svn.cc65.org/cc65/trunk@2662 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
cuz
2003-11-13 22:03:24 +00:00
parent 274bafe6a5
commit 20608c81ce
14 changed files with 560 additions and 60 deletions
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51
src/ca65/symentry.c
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@@ -131,6 +131,43 @@ SymEntry* NewSymEntry (const char* Name)
int SymSearchTree (SymEntry* T, const char* Name, SymEntry** E)
/* Search in the given tree for a name. If we find the symbol, the function
* will return 0 and put the entry pointer into E. If we did not find the
* symbol, and the tree is empty, E is set to NULL. If the tree is not empty,
* E will be set to the last entry, and the result of the function is <0 if
* the entry should be inserted on the left side, and >0 if it should get
* inserted on the right side.
*/
{
/* Is there a tree? */
if (T == 0) {
*E = 0;
return 1;
}
/* We have a table, search it */
while (1) {
/* Get the symbol name */
const char* SymName = GetString (T->Name);
/* Choose next entry */
int Cmp = strcmp (Name, SymName);
if (Cmp < 0 && T->Left) {
T = T->Left;
} else if (Cmp > 0&& T->Right) {
T = T->Right;
} else {
/* Found or end of search, return the result */
*E = T;
return Cmp;
}
}
}
void SymRef (SymEntry* S)
/* Mark the given symbol as referenced */
{
@@ -580,7 +617,7 @@ const char* GetSymName (const SymEntry* S)
unsigned GetSymAddrSize (const SymEntry* S)
unsigned char GetSymAddrSize (const SymEntry* S)
/* Return the address size of the symbol. Beware: This function will just
* return the AddrSize member, it will not look at the expression!
*/
@@ -593,6 +630,18 @@ unsigned GetSymAddrSize (const SymEntry* S)
long GetSymVal (SymEntry* S)
/* Return the value of a symbol assuming it's constant. FAIL will be called
* in case the symbol is undefined or not constant.
*/
{
long Val;
CHECK (S != 0 && SymHasExpr (S) && IsConstExpr (GetSymExpr (S), &Val));
return Val;
}
unsigned GetSymIndex (const SymEntry* S)
/* Return the symbol index for the given symbol */
{