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expr_parser.c
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/**
* School project to subject IFJ (Formal Languages and Compilers)
* Compiler implementation of imperative language IFJ18
*
* Module for evaluating expressions and conditions
*
* Author: Ján Vavro
* Login: xvavro05
*/
#include <stdarg.h>
#include "expr_parser.h"
#include "error.h"
#include "semantic.h"
#include "code_gen.h"
#include "parser.h"
#define SIZE 7
#define SYNTAX_OK 101
#define MATH 0
#define BOOL 1
extern int token; //type of token
/*
* Conventions of auxiliary variables for generating code
* %*NUMBER, where NUMBER is static variable which is
* incremented after each executed rule
*/
extern string *value; //value of token
const int prec_table[SIZE][SIZE] = {
// 0 1 2 3 4 5 6
// + - * / rel ( ) ID $
/* 0 + - */ {GR, LE, GR, LE, GR, LE, GR},
/* 1 * / */
{GR, GR, GR, LE, GR, LE, GR},
/* 2 rel */
{LE, LE, NO, LE, GR, LE, GR},
/* 3 ( */
{LE, LE, LE, LE, EQ, LE, NO},
/* 4 ) */
{GR, GR, GR, NO, GR, NO, GR},
/* 5 id */
{GR, GR, GR, NO, GR, NO, GR},
/* 6 $ */
{LE, LE, LE, LE, NO, LE, NO}
};
int decode(int symbol) {
switch (symbol) {
case MINUS:
case PLUS:
return 0;
case MUL:
case DIV:
return 1;
case EQUAL:
case NOT_EQUAL:
case LESS:
case LESS_EQUAL:
case MORE:
case MORE_EQUAL:
return 2;
case ROUNDL:
return 3;
case ROUNDR:
return 4;
case ID:
case NUM_EXP:
case NUM_FLOAT:
case NUM_INT:
case STRING:
case KEYWORD_NIL:
return 5;
case LEX_EOF:
case LEX_EOL:
case KEYWORD_DO:
case KEYWORD_THEN:
return 6;
default:
return -1;
}
}
/**
* Compare items given as parameters with stack
* @param stack
* @param count number of given items
* @param ... variable count items to be compared
* @return true if success, false if not
*/
bool check_rule(t_stack *stack, int count, ...) {
va_list vaList;
va_start(vaList, count);
int *params = malloc(count * sizeof(int));
if (params == NULL) {
va_end(vaList);
return false;
}
for (int i = 0; i < count; ++i) { //give params to array in reverse order
params[count - 1 - i] = va_arg(vaList, int);
}
t_stack_item *tmp = stack->top;
for (int i = 0; i < count; ++i) {
if (tmp->symbol != params[i]) {
free(params);
va_end(vaList);
return false;
}
if (tmp->next == NULL) {
free(params);
va_end(vaList);
return false;
}
tmp = tmp->next;
}
if (tmp->symbol != LE) {
free(params);
va_end(vaList);
return false;
}
free(params);
va_end(vaList);
return true;
}
/**
* Perform multipop and push one item
* @param stack
* @param count count of items to be popped
* @param symbol item to be pushed
*/
void pop_rule(t_stack *stack, int count, int symbol) {
multi_pop(stack, count + 1); //pop rule and symbol '<'
push(stack, symbol);
}
/**
* Rules that could be executed
* @param stack
* @param prev_value
* @return SYNTAX_OK if success, ERR_SYNTAX if not
*/
int rules(t_stack *stack, string prev_value) {
static unsigned int label_number = 0;
if (check_rule(stack, 3, EXPR, PLUS, EXPR)) {
GEN_INSTR("POPS GF@%%*%s", "op2");
GEN_INSTR("POPS GF@%%*%s", "op1");
GEN_INSTR("PUSHS GF@%%*%s", "op1");
//get 2 items from data stack to variables
GEN_INSTR("TYPE GF@%s GF@%%*%s", "optype1", "op1");
GEN_INSTR("TYPE GF@%s GF@%%*%s", "optype2", "op2");
//get their types
GEN_INSTR("JUMPIFEQ op_1_int%d GF@%s string@int", label_number, "optype1");
GEN_INSTR("JUMPIFEQ op_1_float%d GF@%s string@float", label_number, "optype1");
GEN_INSTR("JUMPIFEQ op_1_string%d GF@%s string@string", label_number, "optype1");
GEN_INSTR("EXIT int@%d", ERR_SEMANTIC_TYPE);
//check first op
GEN_INSTR("LABEL %s%d", "op_1_int", label_number);
GEN_INSTR("JUMPIFEQ int_int%d GF@%s string@int", label_number, "optype2");
GEN_INSTR("JUMPIFEQ int_float%d GF@%s string@float", label_number, "optype2");
GEN_INSTR("EXIT int@%d", ERR_SEMANTIC_TYPE);
GEN_INSTR("LABEL %s%d", "int_int", label_number);
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "ADDS");
GEN_INSTR("JUMP %s%d", "success", label_number);
GEN_INSTR("LABEL %s%d", "int_float", label_number);
GEN_INSTR("%s", "INT2FLOATS");
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "ADDS");
GEN_INSTR("JUMP %s%d", "success", label_number);
/****************************************************/
GEN_INSTR("LABEL %s%d", "op_1_float", label_number);
GEN_INSTR("JUMPIFEQ float_float%d GF@%s string@float", label_number, "optype2");
GEN_INSTR("JUMPIFEQ float_int%d GF@%s string@int", label_number, "optype2");
GEN_INSTR("EXIT int@%d", ERR_SEMANTIC_TYPE);
GEN_INSTR("LABEL %s%d", "float_float", label_number);
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "ADDS");
GEN_INSTR("JUMP %s%d", "success", label_number);
GEN_INSTR("LABEL %s%d", "float_int", label_number);
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "INT2FLOATS");
GEN_INSTR("%s", "ADDS");
GEN_INSTR("JUMP %s%d", "success", label_number);
/****************************************************/
GEN_INSTR("LABEL %s%d", "op_1_string", label_number);
GEN_INSTR("JUMPIFEQ str_str%d GF@%s string@string", label_number, "optype2");
GEN_INSTR("EXIT int@%d", ERR_SEMANTIC_TYPE);
GEN_INSTR("LABEL %s%d", "str_str", label_number);
GEN_INSTR("POPS GF@%%*%s", "op1");
GEN_INSTR("CONCAT GF@expr_res GF@%%*%s GF@%%*%s", "op1", "op2");
GEN_INSTR("PUSHS GF@%s", "expr_res");
GEN_INSTR("JUMP %s%d", "success", label_number);
/****************************************************/
GEN_INSTR("LABEL %s%d", "success", label_number);
label_number++;
pop_rule(stack, 3, EXPR);
return SYNTAX_OK;
} else if (check_rule(stack, 3, EXPR, MINUS, EXPR)) {
GEN_INSTR("POPS GF@%%*%s", "op2"); //op2
GEN_INSTR("POPS GF@%%*%s", "op1"); //op1
GEN_INSTR("PUSHS GF@%%*%s", "op1"); //op1 has to be pushed first
//get 2 items from data stack to variables
GEN_INSTR("TYPE GF@%s GF@%%*%s", "optype1", "op1");
GEN_INSTR("TYPE GF@%s GF@%%*%s", "optype2", "op2");
//get their types
GEN_INSTR("JUMPIFEQ op_1_int%d GF@%s string@int", label_number, "optype1");
GEN_INSTR("JUMPIFEQ op_1_float%d GF@%s string@float", label_number, "optype1");
GEN_INSTR("EXIT int@%d", ERR_SEMANTIC_TYPE);
//check first op
GEN_INSTR("LABEL %s%d", "op_1_int", label_number);
GEN_INSTR("JUMPIFEQ int_int%d GF@%s string@int", label_number, "optype2");
GEN_INSTR("JUMPIFEQ int_float%d GF@%s string@float", label_number, "optype2");
GEN_INSTR("EXIT int@%d", ERR_SEMANTIC_TYPE);
GEN_INSTR("LABEL %s%d", "int_int", label_number);
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "SUBS");
GEN_INSTR("JUMP %s%d", "success", label_number);
GEN_INSTR("LABEL %s%d", "int_float", label_number);
GEN_INSTR("%s", "INT2FLOATS");
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "SUBS");
GEN_INSTR("JUMP %s%d", "success", label_number);
/****************************************************/
GEN_INSTR("LABEL %s%d", "op_1_float", label_number);
GEN_INSTR("JUMPIFEQ float_float%d GF@%s string@float", label_number, "optype2");
GEN_INSTR("JUMPIFEQ float_int%d GF@%s string@int", label_number, "optype2");
GEN_INSTR("EXIT int@%d", ERR_SEMANTIC_TYPE);
GEN_INSTR("LABEL %s%d", "float_float", label_number);
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "SUBS");
GEN_INSTR("JUMP %s%d", "success", label_number);
GEN_INSTR("LABEL %s%d", "float_int", label_number);
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "INT2FLOATS");
GEN_INSTR("%s", "SUBS");
GEN_INSTR("JUMP %s%d", "success", label_number);
/****************************************************/
GEN_INSTR("LABEL %s%d", "success", label_number);
label_number++;
pop_rule(stack, 3, EXPR);
return SYNTAX_OK;
} else if (check_rule(stack, 3, EXPR, MUL, EXPR)) {
GEN_INSTR("POPS GF@%%*%s", "op2");
GEN_INSTR("POPS GF@%%*%s", "op1");
GEN_INSTR("PUSHS GF@%%*%s", "op1");
//get 2 items from data stack to variables
GEN_INSTR("TYPE GF@%s GF@%%*%s", "optype1", "op1");
GEN_INSTR("TYPE GF@%s GF@%%*%s", "optype2", "op2");
//get their types
GEN_INSTR("JUMPIFEQ op_1_int%d GF@%s string@int", label_number, "optype1");
GEN_INSTR("JUMPIFEQ op_1_float%d GF@%s string@float", label_number, "optype1");
GEN_INSTR("EXIT int@%d", ERR_SEMANTIC_TYPE);
//check first op
GEN_INSTR("LABEL %s%d", "op_1_int", label_number);
GEN_INSTR("JUMPIFEQ int_int%d GF@%s string@int", label_number, "optype2");
GEN_INSTR("JUMPIFEQ int_float%d GF@%s string@float", label_number, "optype2");
GEN_INSTR("EXIT int@%d", ERR_SEMANTIC_TYPE);
GEN_INSTR("LABEL %s%d", "int_int", label_number);
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "MULS");
GEN_INSTR("JUMP %s%d", "success", label_number);
GEN_INSTR("LABEL %s%d", "int_float", label_number);
GEN_INSTR("%s", "INT2FLOATS");
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "MULS");
GEN_INSTR("JUMP %s%d", "success", label_number);
/****************************************************/
GEN_INSTR("LABEL %s%d", "op_1_float", label_number);
GEN_INSTR("JUMPIFEQ float_float%d GF@%s string@float", label_number, "optype2");
GEN_INSTR("JUMPIFEQ float_int%d GF@%s string@int", label_number, "optype2");
GEN_INSTR("EXIT int@%d", ERR_SEMANTIC_TYPE);
GEN_INSTR("LABEL %s%d", "float_float", label_number);
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "MULS");
GEN_INSTR("JUMP %s%d", "success", label_number);
GEN_INSTR("LABEL %s%d", "float_int", label_number);
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "INT2FLOATS");
GEN_INSTR("%s", "MULS");
GEN_INSTR("JUMP %s%d", "success", label_number);
/****************************************************/
GEN_INSTR("LABEL %s%d", "success", label_number);
label_number++;
pop_rule(stack, 3, EXPR);
return SYNTAX_OK;
} else if (check_rule(stack, 3, EXPR, DIV, EXPR)) {
GEN_INSTR("POPS GF@%%*%s", "op2");
GEN_INSTR("POPS GF@%%*%s", "op1");
GEN_INSTR("PUSHS GF@%%*%s", "op1");
//get 2 items from data stack to variables
GEN_INSTR("TYPE GF@%s GF@%%*%s", "optype1", "op1");
GEN_INSTR("TYPE GF@%s GF@%%*%s", "optype2", "op2");
//get their types
GEN_INSTR("JUMPIFEQ op_1_int%d GF@%s string@int", label_number, "optype1");
GEN_INSTR("JUMPIFEQ op_1_float%d GF@%s string@float", label_number, "optype1");
GEN_INSTR("EXIT int@%d", ERR_SEMANTIC_TYPE);
//check first op
GEN_INSTR("LABEL %s%d", "op_1_int", label_number);
GEN_INSTR("JUMPIFEQ int_int%d GF@%s string@int", label_number, "optype2");
GEN_INSTR("JUMPIFEQ int_float%d GF@%s string@float", label_number, "optype2");
GEN_INSTR("EXIT int@%d", ERR_SEMANTIC_TYPE);
GEN_INSTR("LABEL %s%d", "int_int", label_number);
GEN_INSTR("JUMPIFEQ div_by_zero%d GF@%%*%s int@0", label_number, "op2");
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "IDIVS");
GEN_INSTR("JUMP %s%d", "success", label_number);
GEN_INSTR("LABEL %s%d", "int_float", label_number);
GEN_INSTR("JUMPIFEQ div_by_zero%d GF@%%*%s float@0x0p+0", label_number, "op2");
GEN_INSTR("%s", "INT2FLOATS");
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "DIVS");
GEN_INSTR("JUMP %s%d", "success", label_number);
/****************************************************/
GEN_INSTR("LABEL %s%d", "op_1_float", label_number);
GEN_INSTR("JUMPIFEQ float_float%d GF@%s string@float", label_number, "optype2");
GEN_INSTR("JUMPIFEQ float_int%d GF@%s string@int", label_number, "optype2");
GEN_INSTR("EXIT int@%d", ERR_SEMANTIC_TYPE);
GEN_INSTR("LABEL %s%d", "float_float", label_number);
GEN_INSTR("JUMPIFEQ div_by_zero%d GF@%%*%s float@0x0p+0", label_number, "op2");
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "DIVS");
GEN_INSTR("JUMP %s%d", "success", label_number);
GEN_INSTR("LABEL %s%d", "float_int", label_number);
GEN_INSTR("JUMPIFEQ div_by_zero%d GF@%%*%s int@0", label_number, "op2");
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "INT2FLOATS");
GEN_INSTR("%s", "DIVS");
GEN_INSTR("JUMP %s%d", "success", label_number);
/****************************************************/
GEN_INSTR("LABEL %s%d", "div_by_zero", label_number);
GEN_INSTR("EXIT int@%d", ERR_ZERO_DIVISION);
/****************************************************/
GEN_INSTR("LABEL %s%d", "success", label_number);
label_number++;
pop_rule(stack, 3, EXPR);
return SYNTAX_OK;
} else if (check_rule(stack, 3, EXPR, LESS, EXPR)) {
GEN_INSTR("POPS GF@%%*%s", "op2");
GEN_INSTR("POPS GF@%%*%s", "op1");
GEN_INSTR("PUSHS GF@%%*%s", "op1");
//get 2 items from data stack to variables
GEN_INSTR("TYPE GF@%s GF@%%*%s", "optype1", "op1");
GEN_INSTR("TYPE GF@%s GF@%%*%s", "optype2", "op2");
//get their types
GEN_INSTR("JUMPIFEQ op_1_int%d GF@%s string@int", label_number, "optype1");
GEN_INSTR("JUMPIFEQ op_1_float%d GF@%s string@float", label_number, "optype1");
GEN_INSTR("JUMPIFEQ op_1_string%d GF@%s string@string", label_number, "optype1");
GEN_INSTR("EXIT int@%d", ERR_SEMANTIC_TYPE);
//check first op
GEN_INSTR("LABEL %s%d", "op_1_int", label_number);
GEN_INSTR("JUMPIFEQ int_int%d GF@%s string@int", label_number, "optype2");
GEN_INSTR("JUMPIFEQ int_float%d GF@%s string@float", label_number, "optype2");
GEN_INSTR("EXIT int@%d", ERR_SEMANTIC_TYPE);
GEN_INSTR("LABEL %s%d", "int_int", label_number);
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "LTS");
GEN_INSTR("JUMP %s%d", "success", label_number);
GEN_INSTR("LABEL %s%d", "int_float", label_number);
GEN_INSTR("%s", "INT2FLOATS");
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "LTS");
GEN_INSTR("JUMP %s%d", "success", label_number);
/****************************************************/
GEN_INSTR("LABEL %s%d", "op_1_float", label_number);
GEN_INSTR("JUMPIFEQ float_float%d GF@%s string@float", label_number, "optype2");
GEN_INSTR("JUMPIFEQ float_int%d GF@%s string@int", label_number, "optype2");
GEN_INSTR("EXIT int@%d", ERR_SEMANTIC_TYPE);
GEN_INSTR("LABEL %s%d", "float_float", label_number);
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "LTS");
GEN_INSTR("JUMP %s%d", "success", label_number);
GEN_INSTR("LABEL %s%d", "float_int", label_number);
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "INT2FLOATS");
GEN_INSTR("%s", "LTS");
GEN_INSTR("JUMP %s%d", "success", label_number);
/****************************************************/
GEN_INSTR("LABEL %s%d", "op_1_string", label_number);
GEN_INSTR("JUMPIFEQ str_str%d GF@%s string@string", label_number, "optype2");
GEN_INSTR("EXIT int@%d", ERR_SEMANTIC_TYPE);
GEN_INSTR("LABEL %s%d", "str_str", label_number);
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "LTS");
GEN_INSTR("JUMP %s%d", "success", label_number);
/****************************************************/
GEN_INSTR("LABEL %s%d", "success", label_number);
label_number++;
pop_rule(stack, 3, EXPR);
return SYNTAX_OK;
} else if (check_rule(stack, 3, EXPR, MORE, EXPR)) {
GEN_INSTR("POPS GF@%%*%s", "op2");
GEN_INSTR("POPS GF@%%*%s", "op1");
GEN_INSTR("PUSHS GF@%%*%s", "op1");
//get 2 items from data stack to variables
GEN_INSTR("TYPE GF@%s GF@%%*%s", "optype1", "op1");
GEN_INSTR("TYPE GF@%s GF@%%*%s", "optype2", "op2");
//get their types
GEN_INSTR("JUMPIFEQ op_1_int%d GF@%s string@int", label_number, "optype1");
GEN_INSTR("JUMPIFEQ op_1_float%d GF@%s string@float", label_number, "optype1");
GEN_INSTR("JUMPIFEQ op_1_string%d GF@%s string@string", label_number, "optype1");
GEN_INSTR("EXIT int@%d", ERR_SEMANTIC_TYPE);
//check first op
GEN_INSTR("LABEL %s%d", "op_1_int", label_number);
GEN_INSTR("JUMPIFEQ int_int%d GF@%s string@int", label_number, "optype2");
GEN_INSTR("JUMPIFEQ int_float%d GF@%s string@float", label_number, "optype2");
GEN_INSTR("EXIT int@%d", ERR_SEMANTIC_TYPE);
GEN_INSTR("LABEL %s%d", "int_int", label_number);
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "GTS");
GEN_INSTR("JUMP %s%d", "success", label_number);
GEN_INSTR("LABEL %s%d", "int_float", label_number);
GEN_INSTR("%s", "INT2FLOATS");
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "GTS");
GEN_INSTR("JUMP %s%d", "success", label_number);
/****************************************************/
GEN_INSTR("LABEL %s%d", "op_1_float", label_number);
GEN_INSTR("JUMPIFEQ float_float%d GF@%s string@float", label_number, "optype2");
GEN_INSTR("JUMPIFEQ float_int%d GF@%s string@int", label_number, "optype2");
GEN_INSTR("EXIT int@%d", ERR_SEMANTIC_TYPE);
GEN_INSTR("LABEL %s%d", "float_float", label_number);
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "GTS");
GEN_INSTR("JUMP %s%d", "success", label_number);
GEN_INSTR("LABEL %s%d", "float_int", label_number);
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "INT2FLOATS");
GEN_INSTR("%s", "GTS");
GEN_INSTR("JUMP %s%d", "success", label_number);
/****************************************************/
GEN_INSTR("LABEL %s%d", "op_1_string", label_number);
GEN_INSTR("JUMPIFEQ str_str%d GF@%s string@string", label_number, "optype2");
GEN_INSTR("EXIT int@%d", ERR_SEMANTIC_TYPE);
GEN_INSTR("LABEL %s%d", "str_str", label_number);
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "GTS");
GEN_INSTR("JUMP %s%d", "success", label_number);
/****************************************************/
GEN_INSTR("LABEL %s%d", "success", label_number);
label_number++;
pop_rule(stack, 3, EXPR);
return SYNTAX_OK;
} else if (check_rule(stack, 3, EXPR, LESS_EQUAL, EXPR)) {
//control types
GEN_INSTR("POPS GF@%%*%s", "op2");
GEN_INSTR("POPS GF@%%*%s", "op1");
GEN_INSTR("PUSHS GF@%%*%s", "op1");
//get 2 items from data stack to variables
GEN_INSTR("TYPE GF@%s GF@%%*%s", "optype1", "op1");
GEN_INSTR("TYPE GF@%s GF@%%*%s", "optype2", "op2");
//get their types
GEN_INSTR("JUMPIFEQ op_1_int%d GF@%s string@int", label_number, "optype1");
GEN_INSTR("JUMPIFEQ op_1_float%d GF@%s string@float", label_number, "optype1");
GEN_INSTR("JUMPIFEQ op_1_string%d GF@%s string@string", label_number, "optype1");
GEN_INSTR("EXIT int@%d", ERR_SEMANTIC_TYPE);
//check first op
GEN_INSTR("LABEL %s%d", "op_1_int", label_number);
GEN_INSTR("JUMPIFEQ int_int%d GF@%s string@int", label_number, "optype2");
GEN_INSTR("JUMPIFEQ int_float%d GF@%s string@float", label_number, "optype2");
GEN_INSTR("EXIT int@%d", ERR_SEMANTIC_TYPE);
GEN_INSTR("LABEL %s%d", "int_int", label_number);
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("JUMP %s%d", "success", label_number);
GEN_INSTR("LABEL %s%d", "int_float", label_number);
GEN_INSTR("%s", "INT2FLOATS");
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("JUMP %s%d", "success", label_number);
/****************************************************/
GEN_INSTR("LABEL %s%d", "op_1_float", label_number);
GEN_INSTR("JUMPIFEQ float_float%d GF@%s string@float", label_number, "optype2");
GEN_INSTR("JUMPIFEQ float_int%d GF@%s string@int", label_number, "optype2");
GEN_INSTR("EXIT int@%d", ERR_SEMANTIC_TYPE);
GEN_INSTR("LABEL %s%d", "float_float", label_number);
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("JUMP %s%d", "success", label_number);
GEN_INSTR("LABEL %s%d", "float_int", label_number);
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "INT2FLOATS");
GEN_INSTR("JUMP %s%d", "success", label_number);
/****************************************************/
GEN_INSTR("LABEL %s%d", "op_1_string", label_number);
GEN_INSTR("JUMPIFEQ str_str%d GF@%s string@string", label_number, "optype2");
GEN_INSTR("EXIT int@%d", ERR_SEMANTIC_TYPE);
GEN_INSTR("LABEL %s%d", "str_str", label_number);
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("JUMP %s%d", "success", label_number);
/****************************************************/
GEN_INSTR("LABEL %s%d", "success", label_number);
label_number++;
//duplicate numbers in stack, call '<' then '==' and 'or' results
GEN_INSTR("POPS GF@%%*%s", "op2");
GEN_INSTR("POPS GF@%%*%s", "op1");
GEN_INSTR("PUSHS GF@%%*%s", "op1");
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("PUSHS GF@%%*%s", "op1");
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "LTS");
GEN_INSTR("POPS GF@%%*%s", "op1"); //result of <
GEN_INSTR("%s", "EQS");
GEN_INSTR("PUSHS GF@%%*%s", "op1");
GEN_INSTR("%s", "ORS");
pop_rule(stack, 3, EXPR);
return SYNTAX_OK;
} else if (check_rule(stack, 3, EXPR, MORE_EQUAL, EXPR)) {
//control types
GEN_INSTR("POPS GF@%%*%s", "op2");
GEN_INSTR("POPS GF@%%*%s", "op1");
GEN_INSTR("PUSHS GF@%%*%s", "op1");
//get 2 items from data stack to variables
GEN_INSTR("TYPE GF@%s GF@%%*%s", "optype1", "op1");
GEN_INSTR("TYPE GF@%s GF@%%*%s", "optype2", "op2");
//get their types
GEN_INSTR("JUMPIFEQ op_1_int%d GF@%s string@int", label_number, "optype1");
GEN_INSTR("JUMPIFEQ op_1_float%d GF@%s string@float", label_number, "optype1");
GEN_INSTR("JUMPIFEQ op_1_string%d GF@%s string@string", label_number, "optype1");
GEN_INSTR("EXIT int@%d", ERR_SEMANTIC_TYPE);
//check first op
GEN_INSTR("LABEL %s%d", "op_1_int", label_number);
GEN_INSTR("JUMPIFEQ int_int%d GF@%s string@int", label_number, "optype2");
GEN_INSTR("JUMPIFEQ int_float%d GF@%s string@float", label_number, "optype2");
GEN_INSTR("EXIT int@%d", ERR_SEMANTIC_TYPE);
GEN_INSTR("LABEL %s%d", "int_int", label_number);
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("JUMP %s%d", "success", label_number);
GEN_INSTR("LABEL %s%d", "int_float", label_number);
GEN_INSTR("%s", "INT2FLOATS");
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("JUMP %s%d", "success", label_number);
/****************************************************/
GEN_INSTR("LABEL %s%d", "op_1_float", label_number);
GEN_INSTR("JUMPIFEQ float_float%d GF@%s string@float", label_number, "optype2");
GEN_INSTR("JUMPIFEQ float_int%d GF@%s string@int", label_number, "optype2");
GEN_INSTR("EXIT int@%d", ERR_SEMANTIC_TYPE);
GEN_INSTR("LABEL %s%d", "float_float", label_number);
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("JUMP %s%d", "success", label_number);
GEN_INSTR("LABEL %s%d", "float_int", label_number);
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "INT2FLOATS");
GEN_INSTR("JUMP %s%d", "success", label_number);
/****************************************************/
GEN_INSTR("LABEL %s%d", "op_1_string", label_number);
GEN_INSTR("JUMPIFEQ str_str%d GF@%s string@string", label_number, "optype2");
GEN_INSTR("EXIT int@%d", ERR_SEMANTIC_TYPE);
GEN_INSTR("LABEL %s%d", "str_str", label_number);
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("JUMP %s%d", "success", label_number);
/****************************************************/
GEN_INSTR("LABEL %s%d", "success", label_number);
label_number++;
//duplicate numbers in stack, call '>' then '==' and 'or' results
GEN_INSTR("POPS GF@%%*%s", "op2");
GEN_INSTR("POPS GF@%%*%s", "op1");
GEN_INSTR("PUSHS GF@%%*%s", "op1");
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("PUSHS GF@%%*%s", "op1");
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "GTS");
GEN_INSTR("POPS GF@%%*%s", "op1"); //result of >
GEN_INSTR("%s", "EQS");
GEN_INSTR("PUSHS GF@%%*%s", "op1");
GEN_INSTR("%s", "ORS");
pop_rule(stack, 3, EXPR);
return SYNTAX_OK;
} else if (check_rule(stack, 3, EXPR, NOT_EQUAL, EXPR)) {
GEN_INSTR("POPS GF@%%*%s", "op2");
GEN_INSTR("POPS GF@%%*%s", "op1");
GEN_INSTR("PUSHS GF@%%*%s", "op1");
//get 2 items from data stack to variables
GEN_INSTR("TYPE GF@%s GF@%%*%s", "optype1", "op1");
GEN_INSTR("TYPE GF@%s GF@%%*%s", "optype2", "op2");
//get their types
GEN_INSTR("JUMPIFEQ op_1_int%d GF@%s string@int", label_number, "optype1");
GEN_INSTR("JUMPIFEQ op_1_float%d GF@%s string@float", label_number, "optype1");
GEN_INSTR("JUMPIFEQ op_1_string%d GF@%s string@string", label_number, "optype1");
GEN_INSTR("JUMPIFEQ op_1_nil%d GF@%s string@nil", label_number, "optype1");
GEN_INSTR("EXIT int@%d", ERR_SEMANTIC_TYPE);
//check first op
GEN_INSTR("LABEL %s%d", "op_1_int", label_number);
GEN_INSTR("JUMPIFEQ int_int%d GF@%s string@int", label_number, "optype2");
GEN_INSTR("JUMPIFEQ int_float%d GF@%s string@float", label_number, "optype2");
GEN_INSTR("JUMPIFEQ dif_types%d GF@%s string@string", label_number, "optype2");
GEN_INSTR("JUMPIFEQ dif_types%d GF@%s string@nil", label_number, "optype2");
GEN_INSTR("EXIT int@%d", ERR_SEMANTIC_TYPE);
GEN_INSTR("LABEL %s%d", "int_int", label_number);
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "EQS");
GEN_INSTR("%s", "NOTS");
GEN_INSTR("JUMP %s%d", "success", label_number);
GEN_INSTR("LABEL %s%d", "int_float", label_number);
GEN_INSTR("%s", "INT2FLOATS");
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "EQS");
GEN_INSTR("%s", "NOTS");
GEN_INSTR("JUMP %s%d", "success", label_number);
/****************************************************/
GEN_INSTR("LABEL %s%d", "op_1_float", label_number);
GEN_INSTR("JUMPIFEQ float_float%d GF@%s string@float", label_number, "optype2");
GEN_INSTR("JUMPIFEQ float_int%d GF@%s string@int", label_number, "optype2");
GEN_INSTR("JUMPIFEQ dif_types%d GF@%s string@string", label_number, "optype2");
GEN_INSTR("JUMPIFEQ dif_types%d GF@%s string@nil", label_number, "optype2");
GEN_INSTR("EXIT int@%d", ERR_SEMANTIC_TYPE);
GEN_INSTR("LABEL %s%d", "float_float", label_number);
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "EQS");
GEN_INSTR("%s", "NOTS");
GEN_INSTR("JUMP %s%d", "success", label_number);
GEN_INSTR("LABEL %s%d", "float_int", label_number);
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "INT2FLOATS");
GEN_INSTR("%s", "EQS");
GEN_INSTR("%s", "NOTS");
GEN_INSTR("JUMP %s%d", "success", label_number);
/****************************************************/
GEN_INSTR("LABEL %s%d", "op_1_string", label_number);
GEN_INSTR("JUMPIFEQ str_str%d GF@%s string@string", label_number, "optype2");
GEN_INSTR("JUMPIFEQ dif_types%d GF@%s string@int", label_number, "optype2");
GEN_INSTR("JUMPIFEQ dif_types%d GF@%s string@float", label_number, "optype2");
GEN_INSTR("JUMPIFEQ dif_types%d GF@%s string@nil", label_number, "optype2");
GEN_INSTR("EXIT int@%d", ERR_SEMANTIC_TYPE);
GEN_INSTR("LABEL %s%d", "str_str", label_number);
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "EQS");
GEN_INSTR("%s", "NOTS");
GEN_INSTR("JUMP %s%d", "success", label_number);
/****************************************************/
GEN_INSTR("LABEL %s%d", "op_1_nil", label_number);
GEN_INSTR("JUMPIFEQ dif_types%d GF@%s string@string", label_number, "optype2");
GEN_INSTR("JUMPIFEQ dif_types%d GF@%s string@int", label_number, "optype2");
GEN_INSTR("JUMPIFEQ dif_types%d GF@%s string@float", label_number, "optype2");
GEN_INSTR("JUMPIFEQ nil_nil%d GF@%s string@nil", label_number, "optype2");
GEN_INSTR("LABEL %s%d", "nil_nil", label_number);
GEN_INSTR("PUSHS bool@%s", "false");
GEN_INSTR("JUMP %s%d", "success", label_number);
/****************************************************/
GEN_INSTR("LABEL %s%d", "dif_types", label_number);
GEN_INSTR("PUSHS bool@%s", "true");
GEN_INSTR("LABEL %s%d", "success", label_number);
label_number++;
pop_rule(stack, 3, EXPR);
return SYNTAX_OK;
} else if (check_rule(stack, 3, EXPR, EQUAL, EXPR)) {
GEN_INSTR("POPS GF@%%*%s", "op2");
GEN_INSTR("POPS GF@%%*%s", "op1");
GEN_INSTR("PUSHS GF@%%*%s", "op1");
//get 2 items from data stack to variables
GEN_INSTR("TYPE GF@%s GF@%%*%s", "optype1", "op1");
GEN_INSTR("TYPE GF@%s GF@%%*%s", "optype2", "op2");
//get their types
GEN_INSTR("JUMPIFEQ op_1_int%d GF@%s string@int", label_number, "optype1");
GEN_INSTR("JUMPIFEQ op_1_float%d GF@%s string@float", label_number, "optype1");
GEN_INSTR("JUMPIFEQ op_1_string%d GF@%s string@string", label_number, "optype1");
GEN_INSTR("JUMPIFEQ op_1_nil%d GF@%s string@nil", label_number, "optype1");
GEN_INSTR("EXIT int@%d", ERR_SEMANTIC_TYPE);
//check first op
GEN_INSTR("LABEL %s%d", "op_1_int", label_number);
GEN_INSTR("JUMPIFEQ int_int%d GF@%s string@int", label_number, "optype2");
GEN_INSTR("JUMPIFEQ int_float%d GF@%s string@float", label_number, "optype2");
GEN_INSTR("JUMPIFEQ dif_types%d GF@%s string@string", label_number, "optype2");
GEN_INSTR("JUMPIFEQ dif_types%d GF@%s string@nil", label_number, "optype2");
GEN_INSTR("EXIT int@%d", ERR_SEMANTIC_TYPE);
GEN_INSTR("LABEL %s%d", "int_int", label_number);
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "EQS");
GEN_INSTR("JUMP %s%d", "success", label_number);
GEN_INSTR("LABEL %s%d", "int_float", label_number);
GEN_INSTR("%s", "INT2FLOATS");
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "EQS");
GEN_INSTR("JUMP %s%d", "success", label_number);
/****************************************************/
GEN_INSTR("LABEL %s%d", "op_1_float", label_number);
GEN_INSTR("JUMPIFEQ float_float%d GF@%s string@float", label_number, "optype2");
GEN_INSTR("JUMPIFEQ float_int%d GF@%s string@int", label_number, "optype2");
GEN_INSTR("JUMPIFEQ dif_types%d GF@%s string@string", label_number, "optype2");
GEN_INSTR("JUMPIFEQ dif_types%d GF@%s string@nil", label_number, "optype2");
GEN_INSTR("EXIT int@%d", ERR_SEMANTIC_TYPE);
GEN_INSTR("LABEL %s%d", "float_float", label_number);
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "EQS");
GEN_INSTR("JUMP %s%d", "success", label_number);
GEN_INSTR("LABEL %s%d", "float_int", label_number);
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "INT2FLOATS");
GEN_INSTR("%s", "EQS");
GEN_INSTR("JUMP %s%d", "success", label_number);
/****************************************************/
GEN_INSTR("LABEL %s%d", "op_1_string", label_number);
GEN_INSTR("JUMPIFEQ str_str%d GF@%s string@string", label_number, "optype2");
GEN_INSTR("JUMPIFEQ dif_types%d GF@%s string@int", label_number, "optype2");
GEN_INSTR("JUMPIFEQ dif_types%d GF@%s string@float", label_number, "optype2");
GEN_INSTR("JUMPIFEQ dif_types%d GF@%s string@nil", label_number, "optype2");
GEN_INSTR("EXIT int@%d", ERR_SEMANTIC_TYPE);
GEN_INSTR("LABEL %s%d", "str_str", label_number);
GEN_INSTR("PUSHS GF@%%*%s", "op2");
GEN_INSTR("%s", "EQS");
GEN_INSTR("JUMP %s%d", "success", label_number);
/****************************************************/
GEN_INSTR("LABEL %s%d", "op_1_nil", label_number);
GEN_INSTR("JUMPIFEQ dif_types%d GF@%s string@string", label_number, "optype2");
GEN_INSTR("JUMPIFEQ dif_types%d GF@%s string@int", label_number, "optype2");
GEN_INSTR("JUMPIFEQ dif_types%d GF@%s string@float", label_number, "optype2");
GEN_INSTR("JUMPIFEQ nil_nil%d GF@%s string@nil", label_number, "optype2");
GEN_INSTR("LABEL %s%d", "nil_nil", label_number);
GEN_INSTR("PUSHS bool@%s", "true");
GEN_INSTR("JUMP %s%d", "success", label_number);
/****************************************************/
GEN_INSTR("LABEL %s%d", "dif_types", label_number);
GEN_INSTR("PUSHS bool@%s", "false");
GEN_INSTR("LABEL %s%d", "success", label_number);
label_number++;
pop_rule(stack, 3, EXPR);
return SYNTAX_OK;
} else if (check_rule(stack, 1, ID)) {
pop_rule(stack, 1, EXPR);
GEN_INSTR("PUSHS LF@%s", prev_value.str);
return SYNTAX_OK;
} else if (check_rule(stack, 3, ROUNDL, EXPR, ROUNDR)) {
pop_rule(stack, 3, EXPR);
return SYNTAX_OK;
} else if (check_rule(stack, 1, NUM_INT)) {
pop_rule(stack, 1, EXPR);
GEN_INSTR("PUSHS int@%s", prev_value.str);
return SYNTAX_OK;
} else if (check_rule(stack, 1, NUM_FLOAT)) {
pop_rule(stack, 1, EXPR);
char *endptr;
double tmp = strtod(prev_value.str, &endptr);
GEN_INSTR("PUSHS float@%a", tmp);
return SYNTAX_OK;
} else if (check_rule(stack, 1, STRING)) {
GEN_INSTR("PUSHS string@%s", prev_value.str);
pop_rule(stack, 1, EXPR);
return SYNTAX_OK;
} else if (check_rule(stack, 1, KEYWORD_NIL)) {
GEN_INSTR("PUSHS nil@%s", "nil");
pop_rule(stack, 1, EXPR);
return SYNTAX_OK;
} else if (check_rule(stack, 1, NUM_EXP)) {
char *endptr;
double tmp = strtod(prev_value.str, &endptr);
GEN_INSTR("PUSHS float@%a", tmp);
pop_rule(stack, 1, EXPR);
return SYNTAX_OK;
} else return ERR_SYNTAX;
}
/**
* Function that perform main logic of precedence analysis
* @param type math/bool
* @param fun_id id of scope where expression is called
* @return SYNTAX_OK
* @return ERR_SEMANTIC_DEFINITION
* @return ERR_SYNTAX
*/
int expresion(int type, char *fun_id) {
int retval;
string prev_value;
strInit(&prev_value);
t_stack *stack = malloc(sizeof(t_stack));
stack_init(stack);
GEN_INSTR("%s", "CLEARS");
push(stack, LEX_EOF);
do {
if (type == BOOL && (token == ROUNDR || token == KEYWORD_THEN || token == KEYWORD_DO) &&
top_term(stack)->symbol == LEX_EOF) {
break;
}
switch (prec_table[decode(top_term(stack)->symbol)][decode(token)]) {
case EQ:
push(stack, token);
strCopyString(&prev_value, value);
GET_TOKEN();
break;
case LE:
insert_after_first_terminal(stack, LE);
if (token == ID) {
if (semantic_check_var_defined(fun_id, value->str) == ERR_SEMANTIC_DEFINITION) {
while (stack->top != NULL) pop(stack);
free(stack);
strFree(&prev_value);
return ERR_SEMANTIC_DEFINITION;
}
}
push(stack, token);
strCopyString(&prev_value, value);
GET_TOKEN();
break;
case GR:
retval = rules(stack, prev_value);
if (retval != SYNTAX_OK) {
while (stack->top != NULL) pop(stack);
free(stack);
strFree(&prev_value);
return retval;
}
break;
case NO:
default:
while (stack->top != NULL) pop(stack);
free(stack);
strFree(&prev_value);
return ERR_SYNTAX;
}
} while (token != LEX_EOL || top_term(stack)->symbol != LEX_EOF);