#include <stdio.h>
#include <stdlib.h>
#include "lex.h"
#include "parser.h"

int main(int argc, char *argv[]) { 

    struct lexer *lex;
    struct expr_node *node;

    if (argc < 2) {
        printf("Usage: %s <expression>\n", argv[0]);
        return 1;
    }

    /*
    //struct lexer *lex = lex_create("x* sin  (x  ^ 2) * 5.5e+2* cosh (x )");
    //struct lexer *lex = lex_create("-1 + -2 - 3 + 4");
    */
    lex = lex_create(argv[1]);

    node = parse_expression(lex);
    lex_free(lex);

    if (node) {
        double x;
        node_debug_print(node);
        printf("polygon(");
        for (x = -10.0; x < 10.0; x += 0.1) {
            printf("(%.2f,%.2f),", x, node_eval(node, x));
        }
        printf("(10, -1000),(-10,-1000))\n");
    }

    node_free(node);

    return 0;
}