uint32_t* assemble(char*** tokens, uint32_t lines)
{
uint32_t i;
uint32_t* assembledInstrs = calloc(lines, 8);
char* dataprocessing[12] = {"add", "sub", "rsb", "and", "eor", "orr", "mov", "tst", "teq", "cmp", "lsl", "andeq"};
char* multiply[2] = {"mul", "mla"};
char* singleDataTransfer[2] = {"ldr", "str"};
char* branch[7] = {"beq", "bne", "bge", "blt", "bgt", "ble", "b"};
node* symbolTable = createSymbolTable(tokens, lines);
for (i = 0; i < lines; i++)
{
if(arrayContains(tokens[i][0], dataprocessing, 12))
assembledInstrs[i] = data_processing(tokens[i]);
else if(arrayContains(tokens[i][0], multiply, 2))
assembledInstrs[i] = multiply_instr(tokens[i]);
else if(arrayContains(tokens[i][0], singleDataTransfer, 2))
assembledInstrs[i] = single_data_transfer(tokens[i], symbolTable);
else if(arrayContains(tokens[i][0], branch, 7))
assembledInstrs[i] = branch_instr(tokens[i], symbolTable);
else
printf("Unknown command");
}
return assembledInstrs;
}
int insert(SymbolTable *table, char *id, Specifier spec, Qualifier qual, int offset, int width, int init)
{
int symID;
SymbolTable* children = NULL;
if (qual == QUAL_FUNC) {
children = createSymbolTable(id);
} else {
if ((symID = lookup(table, id)) != -1) {
return symID;
}
}
int top = table->count;
table->rows[top].id = id;
table->rows[top].spec = spec;
table->rows[top].qual = qual;
table->rows[top].offset = offset;
table->rows[top].width = width;
table->rows[top].init = init;
table->rows[top].table = children;
table->rows[top].base = table->base;
table->count++;
return top;
}
int solve(FILE *f) {
SymbolTable *table = NULL;
int i;
table = createSymbolTable(makeDictionaryEntry, compareDictionaryEntry);
getTableData(f, table);
findWords(table);
dropSymbolTable(table);
return 0;
}
int main()
{
char choice;
char name[80];
int number;
int found;
SymbolTable book;
int i;
/* initialize phone book */
book = createSymbolTable(&makePhoneBook, &comparePhone);
do{
choice = getMenu();
switch(choice){
case '1':
printf("Enter the name: ");
scanf("%[^\n]", name);
myfflush();
printf("Enter the number: ");
scanf("%d", &number);
myfflush();
addEntry(&number, &name, &book);
printf("%d\n", book.total);
break;
case '2':
printf("Enter the number you want to find: ");
scanf("%d", &number);
myfflush();
found = getEntryValue(&number, &book);
if(found == -1) printf("Not found\n");
else{
displayTitle();
displayEntry(book.entries[found]);
}
break;
case '3':
displayTitle();
for(i = 0; i < book.current; i++){
displayEntry(book.entries[i]);
}
break;
case '4':
dropSymbolTable(&book);
break;
default: printf("Invalid choice\n");
}
}while(choice != EXIT);
}
int
commandInit()
{
if (gCommandState.commandStateInitialized) {
return -1;
}
gCommandState.symbolTable = createSymbolTable();
if (gCommandState.symbolTable == NULL) {
return -1;
}
gCommandState.commandStateInitialized = true;
return 0;
}
int solve(FILE *f) {
SymbolTable *table = NULL;
int i;
table = createSymbolTable(makeDomainEntry, compareDomainEntry);
getTableData(f, table);
do {
findWords(table);
printf("Do you want to continue?\n");
} while(getContinueRequest() != 'N');
dropSymbolTable(table);
return 0;
}
SymbolTable* initSymbolTable()
{
return createSymbolTable(NULL);
}
void semantics(ASTnode* ASTroot){
firstMatrix=1;
if(ASTroot==NULL){
return;
}
int z,noTraverse=0;
ASTnode *rows,*l;
token bufToken;
SymbolTable *tmp;
SymbolTableEntryNode *t;
int p=0;
if(sflag==0){
//first time, main function so create a symbol table for main function
sflag=1;
S[0]=createSymbolTable(size, NULL, "MAIN");//parentTable of Main is NULL
symbolStack=createSymbolStack();
pushSymbolStack(S[0],symbolStack);
p=1;
counter++;
}
switch(ASTroot->label){
//Symbol Table creates only in 1, 61, 64
//Symbol table populates in 1:functionDef,31:declarationStmt
case 1://make a new symbol table, this would be the scope unless an END is encountered, functionDef
InsertSymbolTable(topSymbolStack(symbolStack), ASTroot);
S[counter]=createSymbolTable(size, topSymbolStack(symbolStack),ASTroot->array[1]->t.lexeme);
pushSymbolStack(S[counter],symbolStack);
InsertSymbolTableFun(topSymbolStack(symbolStack), ASTroot);//for input and output arguments of function
p=1;
counter++;
break;
case 2://ifstmt
S[counter]=createSymbolTable(size, topSymbolStack(symbolStack),"IF");
pushSymbolStack(S[counter],symbolStack);
p=1;
counter++;
break;
case 3: noTraverse=1;
if(strcmp(topSymbolStack(symbolStack)->symbolTableName,ASTroot->array[0]->t.lexeme)==0){//checking for Recursion
semanticError(3,ASTroot->array[0]->t);
return;
}
//check for input parameter list and function signature- input and output
tmp=topSymbolStack(symbolStack);
while(tmp!=NULL){
z=SearchHashTable(tmp, ASTroot->array[0]->t.lexeme);
if(z!=-1)
break;
else tmp=tmp->parentTable;
}
if(tmp==NULL){
semanticError(1,ASTroot->t);
break;
}//declaration of FunId is checked here itself
t=findSymbolTableNode(tmp->table[z].next,ASTroot->array[0]->t.lexeme);
if(t->type.fid.outputSize!=typeCounter){
semanticError(5,ASTroot->array[0]->t);
break;
}
else{
for(z=0; z<=t->type.fid.outputSize; z++){
if(t->type.fid.output[z]!=type[z]){
semanticError(5,ASTroot->array[0]->t);
noTraverse=1;
break;//from for
}
}
typeCounter=-1;//successfully implemented.
}
l=ASTroot->array[1];
for(z=0; z<=t->type.fid.inputSize; z++){
if(l==NULL){
semanticError(5,ASTroot->array[0]->t);//number of output parameters
noTraverse=1;
break;
}
if(t->type.fid.input[z]!=findTypeVar(l->array[0])){
semanticError(14,ASTroot->array[0]->t);//type Mismatch
noTraverse=1;
break;
}
l=l->array[1];
}
break;
case 11://else stmt
S[counter]=createSymbolTable(size, topSymbolStack(symbolStack),"ELSE");
pushSymbolStack(S[counter],symbolStack);
p=1;
counter++;
break;
case 26:if(ASTroot->array[0]->label==67){
t=getSymbolTableNode(ASTroot->array[1]);
t->type.id.initialized=1;
}
case 27: break;
case 28: break; //it should not come
case 29: break;
case 30: break;
case 31://declaration stmt
InsertSymbolTable(topSymbolStack(symbolStack), ASTroot);
return;
break;
case 51://Assignment
noTraverse=1;
typeCounter=-1;
if(ASTroot->array[1]->label==3){//function call statement
if(ASTroot->array[0]->label==54){//single list
if(outputCheck1(ASTroot->array[0])==0)//send leaf directly
return;
//1- it should already have been declared, 2-if so, then it's type should be recorded
}
else{
//send l
if(outputCheck(ASTroot->array[0])==0)
return;
}
semantics(ASTroot->array[1]);
}
if(ASTroot->array[1]->label==60){//size stmt
//1- check if ID is declared, 2- What is the type of ID, 3- Compare with the return type
if(!isDeclared(ASTroot->array[1]->array[0])){
semanticError(1,ASTroot->array[1]->array[0]->t);
return;
}
z=findType(ASTroot->array[1]->array[0],0);
if(z==57){
if(outputCheck(ASTroot->array[0])==0){//it will populate type of LHS if declared, else returns 0
return;
}
else{//declared
if(!(typeCounter==0&&type[0]==57))
semanticError(6,ASTroot->array[0]->t);
return;
}
}
else if(z==58){
if(outputCheck(ASTroot->array[0])==0){//it will populate type of LHS if declared, else returns 0
return;
}
else{//declared
if(!(typeCounter==1&&type[0]==55&&type[1]==55))
semanticError(6,ASTroot->array[0]->t);
return;
}
}
else {
semanticError(8,ASTroot->array[1]->array[0]->t);//Size contains other that String and Matrix
}
}
if(ASTroot->array[1]->label==37){//Arithmetic Expression
l=ASTroot->array[0];
z=findType(l,1);
if(l->label==54){
if(z==57){
if(ASTroot->array[1]->array[1]==NULL){
if(ASTroot->array[1]->array[0]->array[1]==NULL){
if(findTypeVar(ASTroot->array[1]->array[0]->array[0])==57){//initialization
StringInit(ASTroot->array[0],ASTroot->array[1]->array[0]->array[0]->t.lexeme);
return;
}
}
}
}
else if(z==58){//lhs is matrix
firstMatrix=1;
if(ASTroot->array[1]->array[1]==NULL){
if(ASTroot->array[1]->array[0]->array[1]==NULL){
if((ASTroot->array[1]->array[0]->array[0]->label)==44){//initialization
MatrixInit(ASTroot->array[0],ASTroot->array[1]->array[0]->array[0]);
return;
}
}
}
}
}
if(z==-1)
break;
typeCounter++;
type[typeCounter]=z;
if((z=findTypeAE(ASTroot->array[1]))!=type[typeCounter]){
bufToken.lineNumber=l->t.lineNumber;
semanticError(10,bufToken);
break;
}
//valid Arithmetic expression
//debug();
t= getSymbolTableNode(ASTroot->array[0]);
t->type.id.initialized=1;
typeCounter=-1;
}
break;
case 52://go to case 54
case 54: if(!isDeclared(ASTroot))
semanticError(1,ASTroot->t);
break;
case 75:// AND
case 76:// OR
case 77:// LT
case 78:// LE
case 79:// EQ
case 80:// GT
case 81:// GE
case 82:// NE
case 83:// NOTbooleanExpressionSemantics(ASTnode* BE)
noTraverse=1;
if(booleanExpressionSemantics(ASTroot)==0){
semanticError(10,bufToken);
}
default: break;
}//end of switch
int i;
if(noTraverse==0){
for( i=0; i<ASTroot->arraySize; i++){
if(ASTroot->array[i]!=NULL){
semantics(ASTroot->array[i]);
}
}
}
if(p){
//if popping SymbolTable is a function, then check if it's output parameter are accurately initialised or not
tmp=popSymbolStack(symbolStack);
if(strcmp(tmp->symbolTableName,"MAIN")!=0&&strcmp(tmp->symbolTableName,"IF")!=0&&strcmp(tmp->symbolTableName,"ELSE")!=0){//it is a function
int i;
for(i=0; i<tmp->outputParameter; i++){
t=outputParameterInitCheck(tmp,tmp->outputParameterLexeme[i]);
if(t->type.id.initialized!=1)
{
semanticError(13,ASTroot->array[1]->t);
break;
}
}
}
}
}//end of function
void opCount(int x)
{
int i,j,k,flag=0;
char tokGen[30]="";
char ita[10];
printf("\n\noperators:%d\n",countop);
for(i=0;i<x;i++)
{
int c=checkId(&head,&tail,tok[i]);
if(c==0)
{
for(j=0;j<noOfOperators;j++)
{
if(strcmp(op[j],tok[i])==0)
{
for(k=0;k<noOfOperators;k++)
if(strcmp(op[k],tok[i+1])==0)
{
strcat(tokGen,op[j]);
strcat(tokGen,op[k]);
printToken(tokGen);
strcpy(tokGen,"");
flag==1;
i+=2;
break;
}
}
}
if(flag==0)
printToken(tok[i]);
}
else
{
strcat(tokGen,"id,");
//strcat(tokGen,itoa(c,ita,10));
snprintf(ita,10,"%d",c);
strcat(tokGen,ita);
//strcat(tokGen,snprintf(ita,"%d",c));
printToken(tokGen);
strcpy(tokGen,"");
}
for(j=0;j<noOfKeyWords;j++)
if(strcmp(key[j],tok[i])==0 && strcmp(tok[i+2],"(")!=0 && strcmp("if",tok[i])!=0)
{
if(strcmp(tok[i+2],";")==0 || strcmp(tok[i],"else")==0)
{
//printf("\n%s %s",tok[i],tok[i+1]);
int c=checkId(&head,&tail,tok[i+1]);
if(c==0)
{
strcpy(attr[0],tok[i+1]);
strcpy(attr[1],tok[i]);
createSymbolTable(sl++,attr,&head,&tail);
strcat(tokGen,"id,");
//strcat(tokGen,itoa(sl-1,ita,10));
snprintf(ita,10,"%d",sl-1);
strcat(tokGen,ita);
printToken(tokGen);
strcpy(tokGen,"");
}
}
else
{
strcpy(type,tok[i]);
while(strcmp(tok[++i],";")!=0 && strcmp(tok[i],"char")!=0 && strcmp(tok[i],"int")!=0 )
{
if(strcmp(tok[i],"=")==0)
{
// printf("\n%s %s",type,tok[i-1]);
int c=checkId(&head,&tail,tok[i-1]);
if(c==0)
{
strcpy(attr[0],tok[i-1]);
strcpy(attr[1],type);
createSymbolTable(sl++,attr,&head,&tail);
strcat(tokGen,"id,");
//strcat(tokGen,itoa(sl-1,ita,10));
snprintf(ita,10,"%d",sl-1);
strcat(tokGen,ita);
printToken(tokGen);
strcpy(tokGen,"");
}
}
else if(strcmp(tok[i],",")==0)
{
//printf("\n%s %s",type,tok[i-1]);
int c=checkId(&head,&tail,tok[i-1]);
if(c==0)
{
strcpy(attr[0],tok[i-1]);
strcpy(attr[1],type);
createSymbolTable(sl++,attr,&head,&tail);
//strcat(tokGen,"<");
strcat(tokGen,"id,");
//strcat(tokGen,itoa(sl-1,ita,10));
snprintf(ita,10,"%d",sl-1);
strcat(tokGen,ita);
//strcat(tokGen,">");
//strcat(tokGen,"\0");
//printf("%s ",tokGen);
printToken(tokGen);
strcpy(tokGen,"");
}
strcat(tokGen,",");
printToken(tokGen);
strcpy(tokGen,"");
}
}
if(strcmp(tok[i-2],"=")!=0)
{
//printf("\n%s %s",type,tok[i-1]);
int c=checkId(&head,&tail,tok[i-1]);
if(c==0)
{
strcpy(attr[0],tok[i-1]);
strcpy(attr[1],type);
createSymbolTable(sl++,attr,&head,&tail);
strcat(tokGen,"id,");
//strcat(tokGen,itoa(sl-1,ita,10));
snprintf(ita,10,"%d",sl-1);
strcat(tokGen,ita);
printToken(tokGen);
strcpy(tokGen,"");
}
}
i--;
}
}
else if(strcmp(key[j],tok[i])==0 && strcmp(tok[i+2],"(")==0 && strcmp("if",tok[i])!=0)
{
//printf("\n%s %s",tok[i],tok[i+1]);
int c=checkId(&head,&tail,tok[i+1]);
if(c==0)
{
strcpy(attr[0],tok[i+1]);
strcpy(attr[1],tok[i]);
createSymbolTable(sl++,attr,&head,&tail);
strcat(tokGen,"id,");
//strcat(tokGen,itoa(sl-1,ita,10));
snprintf(ita,10,"%d",sl-1);
strcat(tokGen,ita);
printToken(tokGen);
strcpy(tokGen,"");
i++;
}
}
}
}