go-analyzer/analyzers/test/test.y

%{
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>

extern int yylineno;
extern char *yytext;

extern void yyerror(const char *s);
extern int yylex();
extern FILE *yyin;

void free_node(char *str) {
    if (str) free(str);
}
%}

%union {
    char *str;
    double num;
}

%token SHORT_DECLARATION LBRACE RBRACE SEMICOLON ASSIGN LPAREN RPAREN COMMA
%token VAR FUNC RETURN STRING_LITERAL FLOAT_LITERAL NUMBER PACKAGE IMPORT
%token PLUS MINUS MULT DIV MOD
%token STRING
%token UINT UINT8 UINT16 UINT32 UINT64
%token INT INT8 INT16 INT32 INT64

%token <str> IDENTIFIER

%left PLUS MINUS
%left MULT DIV MOD
%left UMINUS

%%

program:
    package_declaration import_declaration
    | program statement
    ;

statement:
    | var_declaration SEMICOLON
    | func_declaration
    ;

block: 
    LBRACE statements_list RBRACE 
    ;

statements_list:
    | statements_list statement
    | statements_list block
    | statements_list expr SEMICOLON
    ;

expr:
    RETURN math_expr { printf("\033[1;35mRETURN math expr\033[0m\n") }
    | RETURN literal { printf("\033[1;35mRETURN literal\033[0m\n") }
    | IDENTIFIER ASSIGN math_expr { }
    | math_expr { }
    ;

math_expr:
    math_expr PLUS math_expr { printf("PLUS\n"); }
    | math_expr MINUS math_expr { printf("MINUS\n"); }
    | math_expr MULT math_expr { printf("MULT\n"); }
    | math_expr DIV math_expr { printf("DIV\n"); }
    | math_expr MOD math_expr { printf("MOD\n"); }
    | MINUS math_expr %prec UMINUS { printf("UMINUS\n"); }
    | LPAREN { printf("LPAREN\n"); } math_expr RPAREN { printf("RPAREN\n"); }
    | NUMBER { printf("NUMBER\n"); }
    | FLOAT_LITERAL { printf("FLOAT LITERAL\n"); }
    | IDENTIFIER { printf("IDENTIFIER: %s\n", $1); }
    ;

int_types:
    UINT { }
    | UINT8 { }
    | UINT16 { }
    | UINT32 { }
    | UINT64 { }
    | INT { }
    | INT8 { }
    | INT16 { }
    | INT32 {}
    | INT64 { }
    ;

string_types:
    STRING { }
    ;

type:
    int_types { }
    | string_types {  }
    ;

literal:
    STRING_LITERAL { }
    | FLOAT_LITERAL { }
    | NUMBER { }
    ;

// Package & import blocks
package_declaration:
    PACKAGE IDENTIFIER SEMICOLON
    { printf("\033[1;34mPACKAGE IDENTIFIER: %s\n\033[0m", $2); }
    ;

import_declaration:
    | IMPORT { printf("\033[1;36mHELLO, IMPORT BLOCK\n\033[0m"); } import { printf("\033[1;36mBY, IMPORT BLOCK\n\n\033[0m"); }
    | IMPORT { printf("\033[1;36mHELLO, IMPORT BLOCK\n\033[0m"); } LPAREN import_list RPAREN { printf("\033[1;36mBY, IMPORT BLOCK\n\n\033[0m"); }
    ;

import:
    IDENTIFIER STRING_LITERAL { printf("\033[1;36mIMPORTED PACKAGE\n\033[0m"); } SEMICOLON
    | STRING_LITERAL { printf("\033[1;36mIMPORTED PACKAGE\n\033[0m"); } SEMICOLON
    ;

import_list:
    import
    | import_list import
    ;
//

// functions decl
arg_declaration:
    IDENTIFIER type 
    { printf("\033[1;35mARG: %s\n\033[0m", $1); }
    ;

arg_list:
    | arg_declaration
    | arg_list COMMA arg_declaration
    ;

return_type:
    | type { }
    ;

func_declaration:
    FUNC IDENTIFIER 
    { printf("\033[1;35mHELLO, FUNC: %s\n\033[0m", $2); } 
    LPAREN arg_list RPAREN return_type block 
    { printf("\033[1;35mBY, FUNC: %s\n\n\033[0m", $2); }
    ;
//

// vars decl
var_declaration:
    IDENTIFIER SHORT_DECLARATION math_expr { printf("\033[1;33mSHORT DECL with math expr: %s\n\033[0m", $1); }
    | IDENTIFIER SHORT_DECLARATION literal { printf("\033[1;33mSHORT DECL with literal: %s\n\033[0m", $1); }
    | VAR IDENTIFIER type { { printf("\033[1;33mVAR DECL without init value: %s\n\033[0m", $2); } }
    | VAR IDENTIFIER type ASSIGN math_expr { { printf("\033[1;33mVAR DECL with math expr init value: %s\n\033[0m", $2); } }
    | VAR IDENTIFIER type ASSIGN literal { { printf("\033[1;33mVAR DECL with literal init value: %s\n\033[0m", $2); } }
    ;

%%
//

int main(int argc, char **argv) {
    if (argc > 1) {
        FILE *f = fopen(argv[1], "r");
        if (!f) {
            perror("\033[1;91mFailed to open file\033[0m");
            return 1;
        }
        yyin = f;
    }
    yyparse();
    printf("\033[1;92mGOOD CODE\033[0m\n");
    return 0;
}