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ass5_15CS30021.y
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%define parse.error verbose
%{ /* C Declarations and Definitions */
#include <string.h>
#include <stdio.h>
#include "ass5_15CS30021_translator.h"
extern int yylex();
void yyerror(const char *s);
SymbolTable* globalSymbolTableKeeper;
SymbolTable* currentSymbolTableKeeper;
int nextInstruction = 1;
int registerCountKeeper = 0;
Quad QuadArrayKeeper[1000];
opcodeType keywordType;
entrytype globalFType;
%}
%union {
int intval;
float floatval;
int nonval;
char *charval;
struct Etype_* E;
struct Mtype_* M;
struct Ntype_* N;
struct Stype_* S;
struct entrytype_* entryVariableType;
}
%type <charval> translation_unit;
%token <nonval> CASEKEYWORD DEFAULTKEYWORD IFKEYWORD
%token <nonval> ELSEKEYWORD SWITCHKEYWORD WHILEKEYWORD DOKEYWORD FORKEYWORD GOTOKEYWORD CONTINUEKEYWORD BREAKKEYWORD
%token <nonval> RETURNKEYWORD SIZEOFKEYWORD REGISTER
%token <charval> type_specifierkeyword
%token <charval> PARENTHESESOPEN CURLYOPEN SQUAREOPEN PARENTHESESCLOSE CURLYCLOSE SQUARECLOSE punctuator dot comma dereference
%token <charval> plusplus minusminus unaryand star plus minus complement mynot divide mod leftshift rightshift lessthan greaterthan dot_apos
%token <charval> lessthanequal greaterthanequal equalequal notequal xorthis funcor orthis question colon equal starequal divideequal
%token <charval> modequal plusequal minusequal leftshiftequal rightshiftequal andequal xorequal orequal semicolon elipses myand
%token <charval> Identifier integer_constant floating_constant character_constant string_literal
%token <charval> newline
%type <charval> external_declaration function_definition declaration_list;
%type <entryVariableType> declaration_specifiers;
%type <E> declaration init_declarator_list init_declarator declarator direct_declarator;
%type <entryVariableType> type_specifier;
%type <intval> pointer;
%type <E> parameter_type_list parameter_list parameter_declaration;
%type <charval> identifier_list;
%type <E> initializer;
%type <charval> initializer_row_list designation designator_list designator initializer_row assignment_operator;
%type <S> statement labeled_statement compound_statement block_item_list block_item expression_statement selection_statement;
%type <S> iteration_statement jump_statement;
%type <E> primary_expression postfix_expression unary_expression cast_expression multiplicative_expression additive_expression;
%type <E> shift_expression relational_expression equality_expression AND_expression exclusive_OR_expression inclusive_OR_expression;
%type <E> logical_AND_expression logical_OR_expression conditional_expression assignment_expression assignment_expression_opt;
%type <E> expression constant_expression expression_opt;
%type <E> argument_expression_list argument_expression_list_opt;
%type <E> identifier;
%type <M> M1;
%type <N> N1;
%start translation_unit
%nonassoc IFKEYWORDX
%nonassoc ELSEKEYWORD
%%
translation_unit : external_declaration
{
}
| translation_unit external_declaration
{
}
;
primary_expression: identifier
{
}
| floating_constant
{
// This rule generates a temporary variable and sets it equal to the constant.
$$ = new Etype;
$$->loc = currentSymbolTableKeeper->gentemp();
currentSymbolTableKeeper->update($$->loc->name,DOUBLE,0,(currentSymbolTableKeeper->globalOffset));
currentSymbolTableKeeper->globalOffset = currentSymbolTableKeeper->globalOffset+$$->loc->size;
$$->entryVariableType = $$->loc->type;
emit(COPY,$$->loc->name,$1);
}
| character_constant
{
// This rule generates a temporary variable and sets it equal to the constant.
$$ = new Etype;
$$->loc = currentSymbolTableKeeper->gentemp();
currentSymbolTableKeeper->update($$->loc->name,CHAR,0,(currentSymbolTableKeeper->globalOffset));
currentSymbolTableKeeper->globalOffset = currentSymbolTableKeeper->globalOffset + $$->loc->size;
emit(COPY,$$->loc->name,$1);
$$->entryVariableType = $$->loc->type;
}
| string_literal
{
// This rule generates a temporary variable and sets it equal to the constant.
string* stringtoadd = new string(yylval.charval);
stringadder(*stringtoadd);
$$ = new Etype;
$$->loc = currentSymbolTableKeeper->gentemp();
entrytype *tofo = new entrytype; tofo->variabletype = CHAR; tofo->next = NULL;
currentSymbolTableKeeper->update($$->loc->name,PTR,tofo,(currentSymbolTableKeeper->globalOffset));
($$->loc->type).arraysize = 1;
($$->loc->size) = 8*(strlen($1)+1);
currentSymbolTableKeeper->globalOffset = currentSymbolTableKeeper->globalOffset + $$->loc->size;
emit(COPY,$$->loc->name,$1);
$$->entryVariableType = $$->loc->type;
}
| PARENTHESESOPEN expression PARENTHESESCLOSE
{
//This takes care of the rule E-> (E)
$$ = $2;
}
| integer_constant
{
// This rule generates a temporary variable and sets it equal to the constant.
$$ = new Etype;
$$->loc = currentSymbolTableKeeper->gentemp();
currentSymbolTableKeeper->update($$->loc->name,INT,0,(currentSymbolTableKeeper->globalOffset));
currentSymbolTableKeeper->globalOffset = currentSymbolTableKeeper->globalOffset + $$->loc->size;
$$->entryVariableType = $$->loc->type;
$$->val = atoi($1);
currentSymbolTableKeeper->update($$->loc->name,$$->val);
emit(COPY,$$->loc->name,$1);
}
;
identifier: Identifier
{
$$ = new Etype;
symtabentry* tofo1 = currentSymbolTableKeeper->lookUp($1);
symtabentry* tofo2 = globalSymbolTableKeeper->lookUp($1);
if(tofo1 != NULL)
{
$$->loc = tofo1;
$$->entryVariableType = $$->loc->type;
}
else if(tofo2 != NULL)
{
$$->loc = &(tofo2->ptr->symboltable[0]);
$$->entryVariableType = $$->loc->type;
}
else
{
$$->loc = currentSymbolTableKeeper->insert($1);
$$->entryVariableType = $$->loc->type;
$$->loc->declared = 0;
}
}
;
postfix_expression: primary_expression
{
$$ = $1;
}
|postfix_expression SQUAREOPEN expression SQUARECLOSE
{
int effectivesize;
entrytype* temp = ($1->entryVariableType).next;
int factor = 1;
while(temp->next){factor *= temp->arraysize;temp = temp->next;}
switch(temp->variabletype){
case INT:{
effectivesize = INT_SIZE;
break;
}
case CHAR:
{
effectivesize = CHAR_SIZE;
break;
}
case DOUBLE:
{
effectivesize = DOUBLE_SIZE;
break;
}
}
symtabentry* tofo = currentSymbolTableKeeper->gentemp();
currentSymbolTableKeeper->update(tofo->name,temp->variabletype,0,(currentSymbolTableKeeper->globalOffset));
currentSymbolTableKeeper->globalOffset = currentSymbolTableKeeper->globalOffset+ tofo->size;
emit(MULT,tofo->name,$3->loc->name,effectivesize*factor);
for(int i=0;i<10;i++)
{
int k = k + i;
}
$$ = new Etype;
$$->entryVariableType = *(($1->entryVariableType).next);
if(($1->loc->type).variabletype != ARRAY)
{
$$->loc = currentSymbolTableKeeper->gentemp();
currentSymbolTableKeeper->update($$->loc->name,temp->variabletype,0,(currentSymbolTableKeeper->globalOffset));
(currentSymbolTableKeeper->globalOffset) += tofo->size;
emit(PLUS,$$->loc->name,$1->loc->name,tofo->name);
$$->arrayname = $1->arrayname;
}
else
{
$$->loc = tofo;
$$->arrayname = $1->loc->name;
}
if(($$->entryVariableType).variabletype != ARRAY)
{
($$->entryVariableType).variabletype = ARRAY;
}
}
|postfix_expression PARENTHESESOPEN argument_expression_list_opt PARENTHESESCLOSE
{
symtabentry* tofo = globalSymbolTableKeeper->lookUp($1->loc->name);
symtabentry* recur = currentSymbolTableKeeper->lookUp($1->loc->name);
if(string($1->loc->name) != "printi" && string($1->loc->name) != "prints" && string($1->loc->name) != "readi")
{
Etype* a = $3;
Etype* b = $3;
SymbolTable* temp;
if(tofo!=NULL)temp = tofo->ptr;
else {temp = currentSymbolTableKeeper;tofo=recur;}
for(int i=0;i<10;i++)
{
int k = k + i;
}
for(int i=tofo->param_cnt;i>0;i--)
{
$3->loc = typeCheck($3->loc,&((temp->symboltable[i]).type));
$3 = $3->prev_param;
}
for(int i=tofo->param_cnt;i>0;i--)
{
symtabentry* tofo1 = currentSymbolTableKeeper->gentemp();
currentSymbolTableKeeper->update(tofo1->name,((temp->symboltable[i]).type).variabletype,((temp->symboltable[i]).type).next,currentSymbolTableKeeper->globalOffset);
currentSymbolTableKeeper->globalOffset += tofo1->size;
tofo1->type = ((temp->symboltable[i]).type);
emit(COPY,tofo1->name,a->loc->name);
a->loc = tofo1;
a = a->prev_param;
}
int k=0;
for(int j=0;j<tofo->param_cnt;j++)
{
k++;
}
for(int i=tofo->param_cnt;i>0;i--)
{
emit(PARAM,b->loc->name);
b = b->prev_param;
}
int i = tofo->param_cnt + 1;
$$ = new Etype;
$$->loc = currentSymbolTableKeeper->gentemp();
currentSymbolTableKeeper->update($$->loc->name,((temp->symboltable[i]).type).variabletype,((temp->symboltable[i]).type).next,currentSymbolTableKeeper->globalOffset);
currentSymbolTableKeeper->globalOffset += $$->loc->size;
for(int i=0;i<10;i++)
{
int k = k + i;
}
($$->loc->type).arraysize = ((temp->symboltable[i]).type).arraysize;
$$->entryVariableType = $$->loc->type;
emit(CALL,$$->loc->name,$1->loc->name,tofo->param_cnt);
}
else
{
if(string($1->loc->name) != "readi")
{
emit(PARAM,$3->loc->name);
emit(CALL,$$->loc->name,$1->loc->name,1);
}
else
{
emit(CALL,$$->loc->name,$1->loc->name,0);
}
}
}
|postfix_expression dot identifier
{
}
|postfix_expression dereference identifier
{
}
|postfix_expression plusplus
{
symtabentry* tofo = currentSymbolTableKeeper->gentemp();
currentSymbolTableKeeper->update(tofo->name,($1->loc->type).variabletype,($1->loc->type).next,(currentSymbolTableKeeper->globalOffset));
currentSymbolTableKeeper->globalOffset = currentSymbolTableKeeper->globalOffset+tofo->size;
(tofo->type).arraysize = ($1->loc->type).arraysize;
$$ = new Etype;
$$->loc = currentSymbolTableKeeper->gentemp();
currentSymbolTableKeeper->update($$->loc->name,($1->loc->type).variabletype,($1->loc->type).next,(currentSymbolTableKeeper->globalOffset));
(currentSymbolTableKeeper->globalOffset) += $$->loc->size;
($$->loc->type).arraysize = ($1->loc->type).arraysize;
$$->entryVariableType = $$->loc->type;
if(($1->entryVariableType).variabletype == ARRAY)
{
emit(ARRAY_COPY,tofo->name,$1->arrayname,$1->loc->name);
emit(COPY,$$->loc->name,tofo->name);
emit(PLUS,tofo->name,tofo->name,"1");
emit(COPY_TO_ARRAY,$1->arrayname,$1->loc->name,tofo->name);
}
else
{
emit(COPY,tofo->name,$1->loc->name);
emit(COPY,$$->loc->name,tofo->name);
emit(PLUS,tofo->name,tofo->name,"1");
emit(COPY,$1->loc->name,tofo->name);
}
}
| postfix_expression dot_apos
{
}
|postfix_expression minusminus
{
symtabentry* varfo = currentSymbolTableKeeper->gentemp();
currentSymbolTableKeeper->update(varfo->name,($1->loc->type).variabletype,($1->loc->type).next,(currentSymbolTableKeeper->globalOffset));
(currentSymbolTableKeeper->globalOffset) += varfo->size;
(varfo->type).arraysize = ($1->loc->type).arraysize;
$$ = new Etype;
$$->loc = currentSymbolTableKeeper->gentemp();
currentSymbolTableKeeper->update($$->loc->name,($1->loc->type).variabletype,($1->loc->type).next,(currentSymbolTableKeeper->globalOffset));
(currentSymbolTableKeeper->globalOffset) += $$->loc->size;
($$->loc->type).arraysize = ($1->loc->type).arraysize;
$$->entryVariableType = $$->loc->type;
if(($1->entryVariableType).variabletype == ARRAY)
{
emit(ARRAY_COPY,varfo->name,$1->arrayname,$1->loc->name);
emit(COPY,$$->loc->name,varfo->name);
emit(MINUS,varfo->name,varfo->name,"1");
emit(COPY_TO_ARRAY,$1->arrayname,$1->loc->name,varfo->name);
}
else
{
emit(COPY,varfo->name,$1->loc->name);
emit(COPY,$$->loc->name,varfo->name);
emit(MINUS,varfo->name,varfo->name,"1");
emit(COPY,$1->loc->name,varfo->name);
}
}
;
argument_expression_list_opt: argument_expression_list
{
$$ = $1;
}
|{
$$ = new Etype;
$$->param_cnt = 0;
}
;
argument_expression_list: assignment_expression
{
$$ = new Etype;
if(($1->entryVariableType).variabletype == BOOL) $$->loc = convertBOOL2INT($1);
else $$->loc = $1->loc;
$$->prev_param = NULL;
$$->param_cnt = 1;
}
| argument_expression_list comma assignment_expression
{
$$ = new Etype;
if(($3->entryVariableType).variabletype == BOOL) $$->loc = convertBOOL2INT($3);
else $$->loc = $3->loc;
$$->prev_param = $1;
$$->param_cnt = $1->param_cnt + 1;
}
;
unary_expression: postfix_expression
{
//Pass the post fix expression up the grammar
$$ = $1;
}
| plusplus unary_expression
{
symtabentry* tofo = currentSymbolTableKeeper->gentemp();
currentSymbolTableKeeper->update(tofo->name,($2->loc->type).variabletype,($2->loc->type).next,(currentSymbolTableKeeper->globalOffset));
tofo->type = $2->loc->type;
(currentSymbolTableKeeper->globalOffset) += tofo->size;
$$ = new Etype;
$$->loc = currentSymbolTableKeeper->gentemp();
currentSymbolTableKeeper->update($$->loc->name,($2->loc->type).variabletype,($2->loc->type).next,(currentSymbolTableKeeper->globalOffset));
for(int i=0;i<10;i++)
{
int k = k + i;
}
(currentSymbolTableKeeper->globalOffset) += $$->loc->size;
$$->loc->type = $2->loc->type;
$$->entryVariableType = $$->loc->type;
if(($2->entryVariableType).variabletype == ARRAY)
{
emit(ARRAY_COPY,tofo->name,$2->arrayname,$2->loc->name);
emit(PLUS,tofo->name,tofo->name,"1");
emit(COPY,$$->loc->name,tofo->name);
emit(COPY_TO_ARRAY,$2->arrayname,$2->loc->name,tofo->name);
}
else
{
emit(COPY,tofo->name,$2->loc->name);
emit(PLUS,tofo->name,tofo->name,"1");
emit(COPY,$$->loc->name,tofo->name);
emit(COPY,$2->loc->name,tofo->name);
}
}
| minusminus unary_expression
{
symtabentry* tofo = currentSymbolTableKeeper->gentemp();
currentSymbolTableKeeper->update(tofo->name,($2->loc->type).variabletype,($2->loc->type).next,(currentSymbolTableKeeper->globalOffset));
tofo->type = $2->loc->type;
(currentSymbolTableKeeper->globalOffset) += tofo->size;
$$ = new Etype;
$$->loc = currentSymbolTableKeeper->gentemp();
currentSymbolTableKeeper->update($$->loc->name,($2->loc->type).variabletype,($2->loc->type).next,(currentSymbolTableKeeper->globalOffset));
(currentSymbolTableKeeper->globalOffset) += $$->loc->size;
$$->loc->type = $2->loc->type;
$$->entryVariableType = $$->loc->type;
if(($2->entryVariableType).variabletype == ARRAY)
{
emit(ARRAY_COPY,tofo->name,$2->arrayname,$2->loc->name);
}
else
{
emit(COPY,tofo->name,$2->loc->name);
}
emit(MINUS,tofo->name,tofo->name,"1");
emit(COPY,$$->loc->name,tofo->name);
if(($2->entryVariableType).variabletype == ARRAY)
{
emit(COPY_TO_ARRAY,$2->arrayname,$2->loc->name,tofo->name);
}
else
{
emit(COPY,$2->loc->name,tofo->name);
}
}
| plus cast_expression
{
$$ = new Etype;
$$->loc = currentSymbolTableKeeper->gentemp();
currentSymbolTableKeeper->update($$->loc->name,($2->loc->type).variabletype,($2->loc->type).next,(currentSymbolTableKeeper->globalOffset));
(currentSymbolTableKeeper->globalOffset) += $$->loc->size;
$$->loc->type = $2->loc->type;
emit(UNARY_PLUS,$$->loc->name,$2->loc->name,"1");
$$->entryVariableType = $$->loc->type;
}
| minus cast_expression
{
$$ = new Etype;
$$->loc = currentSymbolTableKeeper->gentemp();
currentSymbolTableKeeper->update($$->loc->name,($2->loc->type).variabletype,($2->loc->type).next,(currentSymbolTableKeeper->globalOffset));
(currentSymbolTableKeeper->globalOffset) += $$->loc->size;
$$->loc->type = $2->loc->type;
emit(UNARY_MINUS,$$->loc->name,$2->loc->name,"1");
$$->entryVariableType = $$->loc->type;
}
| complement cast_expression
{
$$ = new Etype;
$$->loc = currentSymbolTableKeeper->gentemp();
currentSymbolTableKeeper->update($$->loc->name,($2->loc->type).variabletype,($2->loc->type).next,(currentSymbolTableKeeper->globalOffset));
(currentSymbolTableKeeper->globalOffset) += $$->loc->size;
$$->loc->type = $2->loc->type;
emit(COMPLEMENT,$$->loc->name,$2->loc->name,"1");
$$->entryVariableType = $$->loc->type;
}
| mynot cast_expression
{
$$ = new Etype;
$$->loc = currentSymbolTableKeeper->gentemp();
currentSymbolTableKeeper->update($$->loc->name,($2->loc->type).variabletype,($2->loc->type).next,(currentSymbolTableKeeper->globalOffset));
(currentSymbolTableKeeper->globalOffset) += $$->loc->size;
$$->loc->type = $2->loc->type;
emit(NOT,$$->loc->name,$2->loc->name,"1");
$$->entryVariableType = $$->loc->type;
}
| unaryand cast_expression
{
$$ = new Etype;
$$->loc = currentSymbolTableKeeper->gentemp();
entrytype* temp = new entrytype;
temp->next = NULL;
if(($2->loc->type).variabletype == PTR) temp = ($2->loc->type).next;
else temp->variabletype = ($2->loc->type).variabletype;
currentSymbolTableKeeper->update($$->loc->name,PTR,temp,(currentSymbolTableKeeper->globalOffset));
(currentSymbolTableKeeper->globalOffset) += $$->loc->size;
emit(UNARY_AND,$$->loc->name,$2->loc->name);
if(($2->loc->type).variabletype == PTR) ($$->loc->type).arraysize = ($2->loc->type).arraysize + 1;
else ($$->loc->type).arraysize = 1;
$$->entryVariableType = $$->loc->type;
}
| star cast_expression
{
$$ = new Etype;
$$->loc = currentSymbolTableKeeper->gentemp();
entrytype* temp = new entrytype;
temp->next = NULL;
temp = ($2->loc->type).next;
if(($2->loc->type).arraysize == 1)
currentSymbolTableKeeper->update($$->loc->name,(($2->loc->type).next)->variabletype,0,(currentSymbolTableKeeper->globalOffset));
else
{
currentSymbolTableKeeper->update($$->loc->name,PTR,temp,(currentSymbolTableKeeper->globalOffset));
}
($$->loc->type).arraysize = ($2->loc->type).arraysize - 1;
(currentSymbolTableKeeper->globalOffset) += $$->loc->size;
emit(STAR,$$->loc->name,$2->loc->name,"1");
$$->entryVariableType = $$->loc->type;
if($2->loc->declared==0)$$->arrayname = $2->arrayname;
else $$->arrayname = $2->loc->name;
}
;
cast_expression: unary_expression
{
if(($1->entryVariableType).variabletype != ARRAY) $$ = $1;
else if(($1->loc->type).variabletype != ARRAY)
{
$$ = new Etype;
$$->loc = currentSymbolTableKeeper->gentemp();
currentSymbolTableKeeper->update($$->loc->name,($1->loc->type).variabletype,0,(currentSymbolTableKeeper->globalOffset));
$1->entryVariableType = $$->loc->type;
$$->entryVariableType = $$->loc->type;
(currentSymbolTableKeeper->globalOffset)+=$$->loc->size;
emit(ARRAY_COPY,$$->loc->name,$1->arrayname,$1->loc->name);
}
else {$$ = $1;}
}
;
multiplicative_expression: cast_expression
{
//Passing the expression up the grammar
$$ = $1;
}
| multiplicative_expression star cast_expression
{
symtabentry* tofo1 = $1->loc;
symtabentry* tofo2 = $3->loc;
entrytype higherType =
((tofo1->type).variabletype) >= ((tofo2->type).variabletype) ? (tofo1->type) : (tofo2->type);
tofo1 = typeCheck(tofo1,&higherType);
tofo2 = typeCheck(tofo2,&higherType);
$$ = new Etype;
$$->loc = currentSymbolTableKeeper->gentemp();
currentSymbolTableKeeper->update($$->loc->name,higherType.variabletype,higherType.next,(currentSymbolTableKeeper->globalOffset));
emit(MULT,$$->loc->name,tofo1->name,tofo2->name);
$$->entryVariableType = $$->loc->type;
(currentSymbolTableKeeper->globalOffset) += $$->loc->size;
}
| multiplicative_expression divide cast_expression
{
symtabentry* tofo1 = $1->loc;
symtabentry* tofo2 = $3->loc;
entrytype higherType =
((tofo1->type).variabletype) >= ((tofo2->type).variabletype) ? (tofo1->type) : (tofo2->type);
tofo1 = typeCheck(tofo1,&higherType);
tofo2 = typeCheck(tofo2,&higherType);
$$ = new Etype;
$$->loc = currentSymbolTableKeeper->gentemp();
currentSymbolTableKeeper->update($$->loc->name,higherType.variabletype,higherType.next,(currentSymbolTableKeeper->globalOffset));
emit(DIVIDE,$$->loc->name,tofo1->name,tofo2->name);
$$->entryVariableType = $$->loc->type;
(currentSymbolTableKeeper->globalOffset) += $$->loc->size;
}
| multiplicative_expression mod cast_expression
{
symtabentry* tofo1 = $1->loc;
symtabentry* tofo2 = $3->loc;
entrytype higherType =
((tofo1->type).variabletype) >= ((tofo2->type).variabletype) ? (tofo1->type) : (tofo2->type);
tofo1 = typeCheck(tofo1,&higherType);
tofo2 = typeCheck(tofo2,&higherType);
$$ = new Etype;
$$->loc = currentSymbolTableKeeper->gentemp();
currentSymbolTableKeeper->update($$->loc->name,higherType.variabletype,higherType.next,(currentSymbolTableKeeper->globalOffset));
emit(MODULO,$$->loc->name,tofo1->name,tofo2->name);
$$->entryVariableType = $$->loc->type;
(currentSymbolTableKeeper->globalOffset) += $$->loc->size;
}
;
additive_expression: multiplicative_expression
{
$$ = $1;
}
| additive_expression plus multiplicative_expression
{
symtabentry* tofo1 = $1->loc;
symtabentry* tofo2 = $3->loc;
entrytype higherType =
((tofo1->type).variabletype) >= ((tofo2->type).variabletype) ? (tofo1->type) : (tofo2->type);
tofo1 = typeCheck(tofo1,&higherType);
tofo2 = typeCheck(tofo2,&higherType);
$$ = new Etype;
$$->loc = currentSymbolTableKeeper->gentemp();
currentSymbolTableKeeper->update($$->loc->name,higherType.variabletype,higherType.next,(currentSymbolTableKeeper->globalOffset));
emit(PLUS,$$->loc->name,tofo1->name,tofo2->name);
$$->entryVariableType = $$->loc->type;
(currentSymbolTableKeeper->globalOffset) += $$->loc->size;
}
| additive_expression minus multiplicative_expression
{
symtabentry* tofo1 = $1->loc;
symtabentry* tofo2 = $3->loc;
entrytype higherType =
((tofo1->type).variabletype) >= ((tofo2->type).variabletype) ? (tofo1->type) : (tofo2->type);
tofo1 = typeCheck(tofo1,&higherType);
tofo2 = typeCheck(tofo2,&higherType);
$$ = new Etype;
$$->loc = currentSymbolTableKeeper->gentemp();
currentSymbolTableKeeper->update($$->loc->name,higherType.variabletype,higherType.next,(currentSymbolTableKeeper->globalOffset));
emit(MINUS,$$->loc->name,tofo1->name,tofo2->name);
$$->entryVariableType = $$->loc->type;
(currentSymbolTableKeeper->globalOffset) += $$->loc->size;
}
;
shift_expression: additive_expression
{
$$ = $1;
}
| shift_expression leftshift additive_expression
{
$$ = new Etype;
$$->loc = currentSymbolTableKeeper->gentemp();
currentSymbolTableKeeper->update($$->loc->name,INT,0,(currentSymbolTableKeeper->globalOffset));
(currentSymbolTableKeeper->globalOffset) += $$->loc->size;
emit(SHIFT_LEFT,$$->loc->name,$1->loc->name,$3->loc->name);
$$->entryVariableType = $$->loc->type;
}
| shift_expression rightshift additive_expression
{
$$ = new Etype;
$$->loc = currentSymbolTableKeeper->gentemp();
currentSymbolTableKeeper->update($$->loc->name,INT,0,(currentSymbolTableKeeper->globalOffset));
(currentSymbolTableKeeper->globalOffset) += $$->loc->size;
emit(SHIFT_RIGHT,$$->loc->name,$1->loc->name,$3->loc->name);
$$->entryVariableType = $$->loc->type;
}
;
relational_expression: shift_expression
{
$$ = $1;
}
|relational_expression lessthan shift_expression
{
$$ = new Etype;
($$->entryVariableType).variabletype = BOOL;
symtabentry* tempv = convertBOOL2INT($1);
symtabentry* tofo1 = tempv;
symtabentry* tofo2 = $3->loc;
entrytype higherType =
((tofo1->type).variabletype) >= ((tofo2->type).variabletype) ? (tofo1->type) : (tofo2->type);
tofo1 = typeCheck(tofo1,&higherType);
tofo2 = typeCheck(tofo2,&higherType);
$$->truelist = makelist(nextInstruction);
$$->falselist = makelist(nextInstruction+1);
emit(IFLESSTHAN,tofo1->name,tofo2->name);
emit(GOTO);
}
|relational_expression greaterthan shift_expression
{
$$ = new Etype;
($$->entryVariableType).variabletype = BOOL;
symtabentry* tempv = convertBOOL2INT($1);
symtabentry* tofo1 = tempv;
symtabentry* tofo2 = $3->loc;
entrytype higherType =
((tofo1->type).variabletype) >= ((tofo2->type).variabletype) ? (tofo1->type) : (tofo2->type);
tofo1 = typeCheck(tofo1,&higherType);
tofo2 = typeCheck(tofo2,&higherType);
$$->truelist = makelist(nextInstruction);
$$->falselist = makelist(nextInstruction+1);
emit(IFGREATERTHAN,tofo1->name,tofo2->name);
emit(GOTO);
}
|relational_expression lessthanequal shift_expression
{
$$ = new Etype;
($$->entryVariableType).variabletype = BOOL;
symtabentry* tempv = convertBOOL2INT($1);
symtabentry* tofo1 = tempv;
symtabentry* tofo2 = $3->loc;
entrytype higherType =
((tofo1->type).variabletype) >= ((tofo2->type).variabletype) ? (tofo1->type) : (tofo2->type);
tofo1 = typeCheck(tofo1,&higherType);
tofo2 = typeCheck(tofo2,&higherType);
$$->truelist = makelist(nextInstruction);
$$->falselist = makelist(nextInstruction+1);
emit(IFLESSEQUAL,tofo1->name,tofo2->name);
emit(GOTO);
}
|relational_expression greaterthanequal shift_expression
{
$$ = new Etype;
($$->entryVariableType).variabletype = BOOL;
symtabentry* tempv = convertBOOL2INT($1);
symtabentry* tofo1 = tempv;
symtabentry* tofo2 = $3->loc;
entrytype higherType =
((tofo1->type).variabletype) >= ((tofo2->type).variabletype) ? (tofo1->type) : (tofo2->type);
tofo1 = typeCheck(tofo1,&higherType);
tofo2 = typeCheck(tofo2,&higherType);
$$->truelist = makelist(nextInstruction);
$$->falselist = makelist(nextInstruction+1);
emit(IFGREATEREQUAL,tofo1->name,tofo2->name);
emit(GOTO);
}
;
equality_expression: relational_expression
{
$$ = $1;
}
| equality_expression equalequal relational_expression
{
$$ = new Etype;
($$->entryVariableType).variabletype = BOOL;
symtabentry* tempv = convertBOOL2INT($1);
symtabentry* tempk = convertBOOL2INT($3);
entrytype higherType =
((tempv->type).variabletype) >= ((tempk->type).variabletype) ? (tempv->type) : (tempk->type);
tempv = typeCheck(tempv,&higherType);
tempk = typeCheck(tempk,&higherType);
$$->truelist = makelist(nextInstruction);
$$->falselist = makelist(nextInstruction+1);
emit(IFEQUAL,tempv->name,tempk->name);
emit(GOTO);
}
| equality_expression notequal relational_expression
{
$$ = new Etype;
($$->entryVariableType).variabletype = BOOL;
symtabentry* tempv = convertBOOL2INT($1);
symtabentry* tempk = convertBOOL2INT($3);
entrytype higherType =
((tempv->type).variabletype) >= ((tempk->type).variabletype) ? (tempv->type) : (tempk->type);
tempv = typeCheck(tempv,&higherType);
tempk = typeCheck(tempk,&higherType);
$$->truelist = makelist(nextInstruction);
$$->falselist = makelist(nextInstruction+1);
emit(IFNOTEQUAL,tempv->name,tempk->name);
emit(GOTO);
}
;
AND_expression: equality_expression
{
$$ = $1;
}
| AND_expression unaryand equality_expression
{
symtabentry* tempv1 = NULL;
symtabentry* tempv2 = NULL;
if(($1->entryVariableType).variabletype==BOOL) tempv1 = convertBOOL2INT($1);
else if(($1->entryVariableType).variabletype==INT) tempv1 = $1->loc;
if(($3->entryVariableType).variabletype==BOOL) tempv2 = convertBOOL2INT($3);
else if(($3->entryVariableType).variabletype==INT) tempv2 = $3->loc;
$$ = new Etype;
$$->loc = currentSymbolTableKeeper->gentemp();
currentSymbolTableKeeper->update($$->loc->name,INT,0,currentSymbolTableKeeper->globalOffset);
currentSymbolTableKeeper->globalOffset += INT_SIZE;
($$->entryVariableType).variabletype = INT;
emit(AND,$$->loc->name,tempv1->name,tempv2->name);
}
;
exclusive_OR_expression: AND_expression
{
$$ = $1;
}
| exclusive_OR_expression xorthis AND_expression
{
symtabentry* tempv1 = NULL;
symtabentry* tempv2 = NULL;
if(($1->entryVariableType).variabletype==BOOL) tempv1 = convertBOOL2INT($1);
else if(($1->entryVariableType).variabletype==INT) tempv1 = $1->loc;
if(($3->entryVariableType).variabletype==BOOL) tempv2 = convertBOOL2INT($3);
else if(($3->entryVariableType).variabletype==INT) tempv2 = $3->loc;
$$ = new Etype;
$$->loc = currentSymbolTableKeeper->gentemp();
currentSymbolTableKeeper->update($$->loc->name,INT,0,currentSymbolTableKeeper->globalOffset);
currentSymbolTableKeeper->globalOffset += INT_SIZE;
($$->entryVariableType).variabletype = INT;
emit(XOR,$$->loc->name,tempv1->name,tempv2->name);
}
;
inclusive_OR_expression: exclusive_OR_expression
{
$$ = $1;
}
|inclusive_OR_expression funcor exclusive_OR_expression
{
symtabentry* tempv1 = NULL;
symtabentry* tempv2 = NULL;
if(($1->entryVariableType).variabletype==BOOL) tempv1 = convertBOOL2INT($1);
else if(($1->entryVariableType).variabletype==INT) tempv1 = $1->loc;
if(($3->entryVariableType).variabletype==BOOL) tempv2 = convertBOOL2INT($3);
else if(($3->entryVariableType).variabletype==INT) tempv2 = $3->loc;
$$ = new Etype;
$$->loc = currentSymbolTableKeeper->gentemp();
currentSymbolTableKeeper->update($$->loc->name,INT,0,currentSymbolTableKeeper->globalOffset);
currentSymbolTableKeeper->globalOffset += INT_SIZE;
($$->entryVariableType).variabletype = INT;
emit(OR,$$->loc->name,tempv1->name,tempv2->name);
}
;
M1:
{
$$ = new Mtype;
$$->nextinstr = nextInstruction;
}
logical_AND_expression: inclusive_OR_expression
{
$$ = $1;
}
| logical_AND_expression myand M1 inclusive_OR_expression
{
$$ = new Etype;
($$->entryVariableType).variabletype = BOOL;
convert2BOOL($1);
convert2BOOL($4);
backpatch($1->truelist,$3->nextinstr);
$$->truelist = $4->truelist;
$$->falselist = merge($1->falselist,$4->falselist);
}
;
logical_OR_expression: logical_AND_expression
{
$$ = $1;
}
|logical_OR_expression orthis M1 logical_AND_expression
{
$$ = new Etype;
($$->entryVariableType).variabletype = BOOL;
convert2BOOL($1);
convert2BOOL($4);
backpatch($1->falselist,$3->nextinstr);
$$->falselist = $4->falselist;
$$->truelist = merge($1->truelist,$4->truelist);
}
;
N1:
{
$$ = new Ntype;
$$->nextlist = makelist(nextInstruction);
emit(GOTO);
}
;