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Scarlett
2025-02-28 17:42:47 -05:00
parent 2695334db9
commit 5147d9d41c
2 changed files with 157 additions and 159 deletions
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149
symbol_table.c
View File

@ -1,156 +1,143 @@
#include "symbol_table.h"
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include "symbol_table.h"
SymbolTable* CreateScope(SymbolTable* ParentScope, int Line, int Column){
SymbolTable* CreateScope(SymbolTable* ParentScope, int Line, int Column) {
SymbolTable* table = (SymbolTable*)malloc(sizeof(SymbolTable));
table->Line_Number = Line;
table->Column_Number = Column;
table->Parent_Scope = ParentScope;
table->Children_Scope = NULL;
table->entries = NULL;
if(ParentScope != NULL){
if(ParentScope->Children_Scope == NULL){
if (ParentScope != NULL) {
if (ParentScope->Children_Scope == NULL) {
ListOfTable* newEntry = (ListOfTable*)malloc(sizeof(ListOfTable));
newEntry->next = NULL;
//newEntry->prev = NULL;
// newEntry->prev = NULL;
newEntry->table = table;
ParentScope->Children_Scope = newEntry;
} else{
} else {
ListOfTable* newEntry = (ListOfTable*)malloc(sizeof(ListOfTable));
//newEntry->prev = NULL;
newEntry->table= table;
// newEntry->prev = NULL;
newEntry->table = table;
ListOfTable* oldEntry = ParentScope->Children_Scope;
ParentScope->Children_Scope = newEntry;
newEntry->next = oldEntry;
}
}
return table;
}
}
TableNode* CreateEntry(SymbolTable* table, char* typeOf, char* id){
TableNode* CreateEntry(SymbolTable* table, char* typeOf, char* id) {
TableNode* newEntry = (TableNode*)malloc(sizeof(TableNode));
newEntry->theType = typeOf;
newEntry->theName = id;
if(table->entries == NULL){
if (table->entries == NULL) {
table->entries = newEntry;
return newEntry;
} else{
} else {
TableNode* oldEntry = table->entries;
table->entries = newEntry;
newEntry->next = oldEntry;
return newEntry;
}
}
TableNode * table_lookup(SymbolTable * table, char * x){
TableNode * entrie = table->entries;
for(; entrie != NULL; entrie = entrie->next){
if (!strcmp(entrie->theName, x)){
TableNode* table_lookup(SymbolTable* table, char* x) {
TableNode* entrie = table->entries;
for (; entrie != NULL; entrie = entrie->next) {
if (!strcmp(entrie->theName, x)) {
return entrie;
}
}
return NULL;
}
TableNode * look_up(SymbolTable * table, char * x){
if(table == NULL){
TableNode* look_up(SymbolTable* table, char* x) {
if (table == NULL) {
return NULL;
}
TableNode * ret = table_lookup(table, x);
if (ret != NULL){
TableNode* ret = table_lookup(table, x);
if (ret != NULL) {
return ret;
}
return look_up(table->Parent_Scope, x);
}
SymbolTable * getAncestor(SymbolTable * table){
if(table->Parent_Scope == NULL){
//if table has no parent, return itself
return table;
} else {
//call function recursively to grab ancestor
return getAncestor(table->Parent_Scope);
void print_symbol_table(SymbolTable* table, FILE* file_ptr) {
if (table->Parent_Scope == NULL) {
fprintf(file_ptr, "%-17s: %-6s : %-6s : %-21s: %-28s\n", "NAME", "SCOPE",
"PARENT", "TYPE", "Extra annotation");
}
}
void print_symbol_table(SymbolTable *table, FILE *file_ptr){
if(table->Parent_Scope == NULL){
fprintf(file_ptr, "%-17s: %-6s : %-6s : %-21s: %-28s\n", "NAME", "SCOPE", "PARENT", "TYPE", "Extra annotation");
}
TableNode * entrie = table->entries;
fprintf(file_ptr, "-----------------:--------:--------:----------------------:-----------------------------\n");
TableNode* entrie = table->entries;
fprintf(file_ptr,
"-----------------:--------:--------:----------------------:---------"
"--------------------\n");
int parant_scope = 0;
int current_scope = 0;
if(table->Parent_Scope != NULL){
parant_scope = table->Parent_Scope->Line_Number*1000 + table->Parent_Scope->Column_Number;
current_scope = table->Line_Number*1000 + table->Column_Number;
if (table->Parent_Scope != NULL) {
parant_scope = table->Parent_Scope->Line_Number * 1000 +
table->Parent_Scope->Column_Number;
current_scope = table->Line_Number * 1000 + table->Column_Number;
} else {
current_scope = 1001;
}
for(; entrie != NULL; entrie = entrie->next){
if (parant_scope == 0){
for (; entrie != NULL; entrie = entrie->next) {
if (parant_scope == 0) {
fprintf(file_ptr, "%-17s: %06d : : %-21s: %-28s\n",
entrie->theName, current_scope,
entrie->theType, "Extra annotation");
entrie->theName, current_scope, entrie->theType,
"Extra annotation");
} else {
fprintf(file_ptr, "%-17s: %06d : %06d : %-21s: %-28s\n",
entrie->theName, current_scope, parant_scope,
entrie->theType, "Extra annotation");
fprintf(file_ptr, "%-17s: %06d : %06d : %-21s: %-28s\n", entrie->theName,
current_scope, parant_scope, entrie->theType, "Extra annotation");
}
}
if (table->Children_Scope != NULL){
if (table->Children_Scope != NULL) {
ListOfTable* node = table->Children_Scope;
for(; node != NULL; node = node->next){
for (; node != NULL; node = node->next) {
print_symbol_table(node->table, file_ptr);
}
}
if (table->Parent_Scope == NULL) {
fprintf(file_ptr, "-----------------:--------:--------:----------------------:-----------------------------\n");
fprintf(file_ptr,
"-----------------:--------:--------:----------------------:-------"
"----------------------\n");
}
}
SymbolTable * getParent(SymbolTable* st){
return st->Parent_Scope;
SymbolTable* getAncestor(SymbolTable* table) {
if (table->Parent_Scope == NULL) {
// if table has no parent, return itself
return table;
} else {
// call function recursively to grab ancestor
return getAncestor(table->Parent_Scope);
}
}
ListOfTable * getChildren(SymbolTable* st){
return st->Children_Scope;
}
SymbolTable * getFirstChild(ListOfTable * lt){
return lt->table;
}
ListOfTable * getRestOfChildren(ListOfTable * lt){
return lt->next;
}
TableNode * getFirstEntry(SymbolTable * st){
return st->entries;
}
TableNode * getNextEntry(TableNode * tn){
return tn->next;
}
char * getType(TableNode * tn){
return tn->theType;
}
char * getName(TableNode * tn){
return tn->theName;
}
int getLine(SymbolTable * st){
return st->Line_Number;
}
int getColumn(SymbolTable *st){
return st->Column_Number;
}
//uncomment the below main function along with the headers above for a simple standalone test of table and entry creation
SymbolTable* getParent(SymbolTable* st) { return st->Parent_Scope; }
ListOfTable* getChildren(SymbolTable* st) { return st->Children_Scope; }
SymbolTable* getFirstChild(ListOfTable* lt) { return lt->table; }
ListOfTable* getRestOfChildren(ListOfTable* lt) { return lt->next; }
TableNode* getFirstEntry(SymbolTable* st) { return st->entries; }
TableNode* getNextEntry(TableNode* tn) { return tn->next; }
char* getType(TableNode* tn) { return tn->theType; }
char* getName(TableNode* tn) { return tn->theName; }
int getLine(SymbolTable* st) { return st->Line_Number; }
int getColumn(SymbolTable* st) { return st->Column_Number; }
// uncomment the below main function along with the headers above for a simple
// standalone test of table and entry creation
/*
int main(){
char* String = "STRING";
char* X = "X";
SymbolTable* Second = CreateScope(NULL, 2,2);
printf("Line number is %d, Column number of scope is %d\n",Second->Line_Number,Second->Column_Number);
TableNode* First_Entry = CreateEntry(Second,String,X);
printf("Line number is %d, Column number of scope is
%d\n",Second->Line_Number,Second->Column_Number); TableNode* First_Entry =
CreateEntry(Second,String,X);
printf("The type of the first entry is %s\n",First_Entry->theType);
return 0;

35
symbol_table.h
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@ -3,30 +3,41 @@
#include <stdlib.h>
#include <string.h>
typedef struct ListOfTable{
typedef struct ListOfTable {
struct SymbolTable* table;
//struct ListOfTable* prev;
// struct ListOfTable* prev;
struct ListOfTable* next;
}ListOfTable;
} ListOfTable;
typedef struct TableNode{
typedef struct TableNode {
char* theType;
char* theName;
struct TableNode* next;
}TableNode;
} TableNode;
typedef struct SymbolTable{
typedef struct SymbolTable {
TableNode* entries;
struct SymbolTable* Parent_Scope;
struct ListOfTable* Children_Scope;
int Line_Number;
int Column_Number;
}SymbolTable;
} SymbolTable;
TableNode* CreateEntry(SymbolTable* table, char* typeOf, char* id);
SymbolTable* CreateScope(SymbolTable* ParentScope, int Line, int Column);
TableNode * table_lookup(SymbolTable * table, char * x);
TableNode * look_up(SymbolTable * table, char * x);
void print_symbol_table(SymbolTable *table, FILE *file_ptr);
TableNode* CreateEntry(SymbolTable* table, char* typeOf, char* id);
TableNode* table_lookup(SymbolTable* table, char* x);
TableNode* look_up(SymbolTable* table, char* x);
void print_symbol_table(SymbolTable* table, FILE* file_ptr);
SymbolTable* getAncestor(SymbolTable* table);
SymbolTable* getParent(SymbolTable* st);
ListOfTable* getChildren(SymbolTable* st);
SymbolTable* getFirstChild(ListOfTable* lt);
ListOfTable* getRestOfChildren(ListOfTable* lt);
TableNode* getFirstEntry(SymbolTable* st);
TableNode* getNextEntry(TableNode* tn);
char* getType(TableNode* tn);
char* getName(TableNode* tn);
int getLine(SymbolTable* st);
int getColumn(SymbolTable* st);