parser.h

/************************************************************************
 * 
 * Compiler implementation for imperative programming language IFJ18
 * 
 * Autors:
 * Sasák Tomáš - xsasak01
 * Venkrbec Tomáš - xvenkr01
 * Krajči Martin - xkrajc21
 * Dižová Natália - xdizov00 
 * 
 ***********************************************************************/
#include <stdbool.h>
#include "symtable.h"
#include "error.h"

#define OK 0

#define GET_TOKEN() \
    pData.token = get_token(); \
    if(pData.token.type == L_ERR) \
    { \
        fprintf(stderr,"Lexical error, wrong lexem structure! Line: %d \n", pData.token.attr.i); \
        error(L_ERR, pData.token.attr.i); \
    }; \

#define CREATE_NORETVAL_TOKEN() \
    str_init(&noretval.attr.str); \
    str_add_string(&noretval.attr.str, "$noretval"); \
    noretval.type = ID; \

/**
 * Structure which represents data of parser.
 */
typedef struct parserdata
{
    tToken token; //< Currently parsed token.
    tSymTable *local; //< Pointer to the local symbol table, storec variables.
    tSymTable *global; //< Pointer to the global symbol table, stores functions.
    tIList *instrs; //< Pointer to the inside mid-instruction list.
    tStack *stack; //< Stack with tokens, which can be used next time, used if parser must "eat" one more token to choose correct derivation tree, or used for expression parsing.
    int scopes; //< Counter of how many scopes parser is inside.
    bool inDefinition; //< Bool which signifies if parser is inside function definition.
    int currentLine; //< Counter which counts on which line is parser
}tPData;

extern tPData pData;

void parse();
void start();
void parser_init();
void if_condition();
void end_of_line();
void while_loop();
void end_of_file();
void function_call(bool moved, bool pushed);
void function_declaration();
void params(tNode *function);
void parse_function_definition();
void validate_variable(string name);
void validate_calls(tNode *root);
void validate_params(tNode *root);
int validate_symbol(string name);
void error(int id, int line);