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#include <stdlib.h>
#include <string.h>
#include <limits.h>
#include <errno.h>
#include <posthaste/execute.h>
#include <posthaste/parser.h>
#include <posthaste/debug.h>
#include <posthaste/scope.h>
#include <posthaste/check.h>
#include <posthaste/lower.h>
#include <posthaste/core.h>
#include <posthaste/ast.h>
static char *read_file(const char *fname, FILE *f)
{
fseek(f, 0, SEEK_END);
long s = ftell(f);
if (s == LONG_MAX) {
/** @todo should probably do this via fstat or something */
fprintf(stderr, "%s might be a directory", fname);
return NULL;
}
fseek(f, 0, SEEK_SET);
char *buf = malloc(s + 1);
if (!buf)
return NULL;
fread(buf, s + 1, 1, f);
/* remember terminating null */
buf[s] = 0;
return buf;
}
int run(const char *fname)
{
int ret = 0;
const char *buf = NULL;
struct scope *scope = NULL;
struct parser *p = NULL;
FILE *f = fopen(fname, "rb");
if (!f) {
fprintf(stderr, "failed opening %s: %s\n", fname,
strerror(errno));
return -1;
}
buf = read_file(fname, f);
fclose(f);
if (!buf) {
ret = -1;
goto out;
}
p = create_parser();
if (!p) {
ret = -1;
goto out;
}
parse(p, fname, buf);
if (p->failed) {
ret = -1;
goto out;
}
scope = create_scope();
if (!scope) {
ret = -1;
goto out;
}
scope_set_file(scope, fname, buf);
struct ast *ast = p->tree;
if (check(scope, ast)) {
ret = -1;
goto out;
}
lower_ast(ast);
execute();
out:
free((void *)buf);
destroy_lowering();
destroy_scopes();
destroy_ast_nodes();
destroy_parser(p);
return ret;
}
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