Table des symboles

Table_Symboles/main.c

@@ -0,0 +1,13 @@
+#include <stdio.h>
+#include "table_symboles.h"
+
+int main() {
+    Table_Symboles T;
+    initialise_table(&T);
+    add_symbole_top(&T, "toto", 0, 1);
+    add_symbole_top(&T, "titi", 1, 0);
+    add_symbole_bottom(&T, "titi", 0, 1);
+    print_table(&T);
+
+    return 0;
+}

Table_Symboles/table_symboles.c

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+//
+// Created by Nahom Belay on 31/03/2021.
+//
+
+#include "table_symboles.h"
+#include <stdio.h>
+#include <string.h>
+
+
+void initialise_table(Table_Symboles * table){
+    table->indexAvailableBottom = TABLE_SIZE - 1;
+    table->indexAvailableTop = 0;
+}
+
+int variable_exists(Table_Symboles * table, char * varName){
+    for (int i = 0; i < table->indexAvailableTop; i++){
+        if (strcmp(varName, table->array[i].Variable_Name) == 0){
+            return -1;
+        }
+    }
+
+    for (int i = (table->indexAvailableBottom + 1); i < TABLE_SIZE; i++){
+        if (strcmp(varName, table->array[i].Variable_Name) == 0){
+            return -1;
+        }
+    }
+    return 0;
+}
+int add_symbole_top(Table_Symboles * table, char * varName, enum Symbole_Type type, enum Initialised_Variable init){
+    Symbole symbole;
+    symbole.Variable_Name = varName;
+    symbole.addr = table->indexAvailableTop;
+    symbole.init = init;
+    symbole.type = type;
+    if (table->indexAvailableTop >= table->indexAvailableBottom){
+        return -1;
+    } else if (variable_exists(table, varName) == -1){
+        return -2;
+    } else {
+        table->array[table->indexAvailableTop] = symbole;
+        table->indexAvailableTop++;
+    }
+    return 0;
+}
+
+int add_symbole_bottom(Table_Symboles * table, char * varName, enum Symbole_Type type, enum Initialised_Variable init){
+    Symbole symbole;
+    symbole.Variable_Name = varName;
+    symbole.addr = table->indexAvailableBottom;
+    symbole.init = init;
+    symbole.type = type;
+    if (table->indexAvailableTop >= table->indexAvailableBottom){
+        return -1;
+    } else if (variable_exists(table, varName) == 1){
+        return -2;
+    } else {
+        table->array[table->indexAvailableBottom] = symbole;
+        table->indexAvailableBottom--;
+    }
+    return 0;
+}
+
+void print_symbole(Symbole * symbole){
+    char * var = symbole->Variable_Name;
+    int addr = symbole->addr;
+    int type = symbole->type;
+    char * typeStr;
+    if (type == 0){
+        typeStr = "INT";
+    } else{
+        typeStr = "CONST_INT";
+    }
+    int init = symbole->init;
+    char * initStr;
+    if (type == 0){
+        initStr = "INITIALISED";
+    } else{
+        initStr = "NOT_INITIALISED";
+    }
+    printf("%-20s\t\t %-12s\t\t %-12d\t %-12s\n", var, typeStr, addr, initStr);
+}
+
+void print_table(Table_Symboles * table){
+    printf("%-20s\t\t %-12s\t\t %-12s\t %-12s\n", "Variable Name", "Type", "Address", "Initialised");
+    int indexTop = table->indexAvailableTop;
+    int indexBottom = table->indexAvailableBottom;
+    Symbole symbole;
+    for (int i = 0; i < indexTop; i++){
+        symbole = table->array[i];
+        print_symbole(&symbole);
+    }
+    if (table->indexAvailableBottom != TABLE_SIZE - 1){
+        printf("%-20s\t\t %-12s\t\t %-12s\t %-12s\n", "...", "...", "...", "...");
+        for (int i = (indexBottom + 1); i < TABLE_SIZE; i++){
+            symbole = table->array[i];
+            print_symbole(&symbole);
+        }
+    }
+
+}

Table_Symboles/table_symboles.h

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+//
+// Created by Nahom Belay on 31/03/2021.
+//
+
+#ifndef TABLE_SYMBOLES_H
+#define TABLE_SYMBOLES_H
+
+#define TABLE_SIZE 50
+
+enum Symbole_Type {TYPE_INT , TYPE_CONST_INT};
+enum Initialised_Variable{INITIALISED , NOT_INITIALISED};
+
+typedef struct Symboles {
+    char * Variable_Name;
+    int addr ;
+    enum Symbole_Type type;
+    enum Initialised_Variable init;
+} Symbole;
+
+typedef struct Table_Symboles {
+    Symbole array[TABLE_SIZE];
+    int indexAvailableTop;
+    int indexAvailableBottom;
+} Table_Symboles;
+
+/**
+ * Initialises indexAvailableTop at 0 and indexAvailableBottom at TABLE_SIZE - 1
+ * @param table
+ */
+void initialise_table(Table_Symboles * table);
+
+/**
+ * Adds a symbole at the top (regular varaibles)
+ * @param table
+ * @param varName
+ * @param type
+ * @param init
+ * @return if symbole added successfully, -1 if the table is full and -2 if the varaible already exists in the table
+ */
+int add_symbole_top(Table_Symboles * table, char * varName, enum Symbole_Type type , enum Initialised_Variable init);
+
+/**
+ * Adds a symbole at the bottom (temp variables)
+ * @param table
+ * @param varName
+ * @param type
+ * @param init
+ * @return 0 if symbole added successfully, -1 if the table is full and -2 if the varaible already exists in the table
+ */
+int add_symbole_bottom(Table_Symboles * table, char * varName, enum Symbole_Type type , enum Initialised_Variable init);
+
+/**
+ * Verifies if a varaible name is already present in the table to avoid duplicates
+ * @param table
+ * @param varName
+ * @return -1 if the varaible name exists, 0 if it doesn't
+ */
+int variable_exists(Table_Symboles * table, char * varName);
+
+/**
+ * Prints a symbole with this format
+ * varName      | Type  | Address   | Initialised/Not_Initialised
+ * @param symbole
+ */
+void print_symbole(Symbole * symbole);
+
+/**
+ * Prints the table
+ * @param table
+ */
+void print_table(Table_Symboles * table);
+
+#endif TABLE_SYMBOLES_H