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

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

    struct parser parser;
    struct expr_node *node;
    FILE *file;
    struct graph_range graph;

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

    node = parser_parse(&parser, argv[1], "x");

    if (!node) {
        fprintf(stderr, "%s", parser_get_error_text(&parser));
        return parser_get_error(&parser);
    }

    graph.xmin = -10.0;
    graph.xmax = 10.0;
    graph.ymin = -10.0;
    graph.ymax = 10.0;
    graph.step = 0.01;

    file = fopen("out.ps", "w");
    ps_export_graph(file, node, &graph);
    fclose(file);

    file = fopen("graph.dot", "w");
    node_debug_print_gv(node, file);
    fclose(file);

    node_free(node);


    return 0;
}