static void
vcc_ByteVal(struct vcc *tl, double *d)
{
double v, sc;
v = vcc_DoubleVal(tl);
ERRCHK(tl);
if (tl->t->tok != ID) {
vsb_printf(tl->sb, "Expected BYTES unit (B, KB, MB...) got ");
vcc_ErrToken(tl, tl->t);
vsb_printf(tl->sb, "\n");
vcc_ErrWhere(tl, tl->t);
return;
}
if (vcc_IdIs(tl->t, "B"))
sc = 1.;
else if (vcc_IdIs(tl->t, "KB"))
sc = 1024.;
else if (vcc_IdIs(tl->t, "MB"))
sc = 1024. * 1024.;
else if (vcc_IdIs(tl->t, "GB"))
sc = 1024. * 1024. * 1024.;
else if (vcc_IdIs(tl->t, "TB"))
sc = 1024. * 1024. * 1024. * 1024.;
else {
vsb_printf(tl->sb, "Unknown BYTES unit ");
vcc_ErrToken(tl, tl->t);
vsb_printf(tl->sb,
". Legal are 'B', 'KB', 'MB', 'GB' and 'TB'\n");
vcc_ErrWhere(tl, tl->t);
return;
}
vcc_NextToken(tl);
*d = v * sc;
}
static void
cmd_http_chunkedlen(CMD_ARGS)
{
unsigned len;
unsigned u, v;
char buf[16384];
struct http *hp;
(void)cmd;
(void)vl;
CAST_OBJ_NOTNULL(hp, priv, HTTP_MAGIC);
AN(av[1]);
AZ(av[2]);
vsb_clear(hp->vsb);
len = atoi(av[1]);
for (u = 0; u < sizeof buf; u++)
buf[u] = (u & 7) + '0';
for (u = 0; u < len; u += 16384) {
v = len - u;
if (v > sizeof buf)
v = sizeof buf;
vsb_printf(hp->vsb, "%x%s", v, nl);
vsb_printf(hp->vsb, "%*.*s%s", v, v, buf, nl);
}
vsb_printf(hp->vsb, "%x%s%s", 0, nl, nl);
http_write(hp, 4, "chunked");
}
static double
vcc_TimeUnit(struct vcc *tl)
{
double sc = 1.0;
assert(tl->t->tok == ID);
if (vcc_IdIs(tl->t, "ms"))
sc = 1e-3;
else if (vcc_IdIs(tl->t, "s"))
sc = 1.0;
else if (vcc_IdIs(tl->t, "m"))
sc = 60.0;
else if (vcc_IdIs(tl->t, "h"))
sc = 60.0 * 60.0;
else if (vcc_IdIs(tl->t, "d"))
sc = 60.0 * 60.0 * 24.0;
else if (vcc_IdIs(tl->t, "w"))
sc = 60.0 * 60.0 * 24.0 * 7.0;
else {
vsb_printf(tl->sb, "Unknown time unit ");
vcc_ErrToken(tl, tl->t);
vsb_printf(tl->sb, ". Legal are 's', 'm', 'h' and 'd'\n");
vcc_ErrWhere(tl, tl->t);
return (1.0);
}
vcc_NextToken(tl);
return (sc);
}
static void
vcc_expr0(struct vcc *tl, struct expr **e, enum var_type fmt)
{
struct expr *e2;
struct token *tk;
*e = NULL;
vcc_expr_cand(tl, e, fmt);
ERRCHK(tl);
if ((*e)->fmt != BOOL || tl->t->tok != T_COR)
return;
*e = vcc_expr_edit(BOOL, "(\v+\n\v1", *e, NULL);
while (tl->t->tok == T_COR) {
vcc_NextToken(tl);
tk = tl->t;
vcc_expr_cand(tl, &e2, fmt);
ERRCHK(tl);
if (e2->fmt != BOOL) {
vsb_printf(tl->sb,
"'||' must be followed by BOOL, found ");
vsb_printf(tl->sb, "%s.\n", vcc_Type(e2->fmt));
vcc_ErrWhere2(tl, tk, tl->t);
return;
}
*e = vcc_expr_edit(BOOL, "\v1\v-\n||\v+\n\v2", *e, e2);
}
*e = vcc_expr_edit(BOOL, "\v1\v-\n)", *e, NULL);
}
static void
illegal_assignment(const struct tokenlist *tl, const char *type)
{
vsb_printf(tl->sb, "Invalid assignment operator ");
vcc_ErrToken(tl, tl->t);
vsb_printf(tl->sb,
" only '=' is legal for %s\n", type);
}
void
vcc__Expect(struct tokenlist *tl, unsigned tok, int line)
{
if (tl->t->tok == tok)
return;
vsb_printf(tl->sb, "Expected %s got ", vcl_tnames[tok]);
vcc_ErrToken(tl, tl->t);
vsb_printf(tl->sb, "\n(program line %u), at\n", line);
vcc_ErrWhere(tl, tl->t);
}
void
vcc_ErrToken(const struct tokenlist *tl, const struct token *t)
{
if (t->tok == EOI)
vsb_printf(tl->sb, "end of input");
else if (t->tok == CSRC)
vsb_printf(tl->sb, "C{ ... }C");
else
vsb_printf(tl->sb, "'%.*s'", PF(t));
}
void
vcc_ExpectCid(struct tokenlist *tl)
{
ExpectErr(tl, ID);
ERRCHK(tl);
if (vcc_isCid(tl->t))
return;
vsb_printf(tl->sb, "Identifier ");
vcc_ErrToken(tl, tl->t);
vsb_printf(tl->sb,
" contains illegal characters, use [0-9a-zA-Z_] only.\n");
vcc_ErrWhere(tl, tl->t);
}
static void
vcc_icoord(struct vsb *vsb, const struct token *t, const char **ll)
{
unsigned lin, pos;
const char *p, *b;
struct source *sp;
lin = 1;
pos = 0;
sp = t->src;
b = sp->b;
if (ll != NULL)
*ll = b;
for (p = b; p < t->b; p++) {
if (*p == '\n') {
lin++;
pos = 0;
if (ll != NULL)
*ll = p + 1;
} else if (*p == '\t') {
pos &= ~7;
pos += 8;
} else
pos++;
}
vsb_printf(vsb, "(%s Line %d Pos %d)", sp->name, lin, pos + 1);
}
void
vcc_Expr(struct vcc *tl, enum var_type fmt)
{
struct expr *e;
struct token *t1;
assert(fmt != VOID);
t1 = tl->t;
vcc_expr0(tl, &e, fmt);
ERRCHK(tl);
if (fmt == STRING || fmt == STRING_LIST)
vcc_expr_tostring(&e, fmt);
if (!tl->err && fmt != e->fmt) {
vsb_printf(tl->sb, "Expression has type %s, expected %s\n",
vcc_Type(e->fmt), vcc_Type(fmt));
tl->err = 1;
}
if (!tl->err) {
if (e->fmt == STRING_LIST) {
e = vcc_expr_edit(STRING_LIST,
"\v+\n\v1,\nvrt_magic_string_end\v-", e, NULL);
}
vcc_expr_fmt(tl->fb, tl->indent, e);
vsb_putc(tl->fb, '\n');
} else {
if (t1 != tl->t)
vcc_ErrWhere2(tl, t1, tl->t);
}
vcc_delete_expr(e);
}
static void
parse_return(struct tokenlist *tl)
{
int retval = 0;
vcc_NextToken(tl);
ExpectErr(tl, '(');
vcc_NextToken(tl);
ExpectErr(tl, ID);
#define VCL_RET_MAC(l, U) \
do { \
if (vcc_IdIs(tl->t, #l)) { \
Fb(tl, 1, "VRT_done(sp, VCL_RET_" #U ");\n"); \
vcc_ProcAction(tl->curproc, VCL_RET_##U, tl->t);\
retval = 1; \
} \
} while (0);
#include "vcl_returns.h"
#undef VCL_RET_MAC
if (!retval) {
vsb_printf(tl->sb, "Expected return action name.\n");
vcc_ErrWhere(tl, tl->t);
ERRCHK(tl);
}
vcc_NextToken(tl);
ExpectErr(tl, ')');
vcc_NextToken(tl);
}
//lint -e{818}
void
vtc_log(struct vtclog *vl, unsigned lvl, const char *fmt, ...)
{
CHECK_OBJ_NOTNULL(vl, VTCLOG_MAGIC);
AZ(pthread_mutex_lock(&vl->mtx));
assert(lvl < NLEAD);
vsb_clear(vl->vsb);
vsb_printf(vl->vsb, "%s %-4s ", lead[lvl], vl->id);
va_list ap;
va_start(ap, fmt);
(void)vsb_vprintf(vl->vsb, fmt, ap);
va_end(ap);
vsb_putc(vl->vsb, '\n');
vsb_finish(vl->vsb);
AZ(vsb_overflowed(vl->vsb));
vtc_log_emit(vl, lvl);
vsb_clear(vl->vsb);
AZ(pthread_mutex_unlock(&vl->mtx));
if (lvl == 0) {
vtc_error = 1;
if (pthread_self() != vtc_thread)
pthread_exit(NULL);
}
}
void
vcc_ParseLeastBusyDirector(struct tokenlist *tl, const struct token *t_policy,
const struct token *t_dir)
{
struct token *t_field, *t_be;
int nbh, nelem;
struct fld_spec *fs;
const char *first;
fs = vcc_FldSpec(tl, "!backend", NULL);
Fc(tl, 0, "\nstatic const struct vrt_dir_least_busy_entry "
"vdrre_%.*s[] = {\n", PF(t_dir));
for (nelem = 0; tl->t->tok != '}'; nelem++) { /* List of members */
first = "";
t_be = tl->t;
vcc_ResetFldSpec(fs);
nbh = -1;
ExpectErr(tl, '{');
vcc_NextToken(tl);
Fc(tl, 0, "\t{");
while (tl->t->tok != '}') { /* Member fields */
vcc_IsField(tl, &t_field, fs);
ERRCHK(tl);
if (vcc_IdIs(t_field, "backend")) {
vcc_ParseBackendHost(tl, &nbh,
t_dir, t_policy, nelem);
Fc(tl, 0, "%s .host = &bh_%d", first, nbh);
ERRCHK(tl);
} else {
ErrInternal(tl);
}
first = ", ";
}
vcc_FieldsOk(tl, fs);
if (tl->err) {
vsb_printf(tl->sb,
"\nIn member host specification starting at:\n");
vcc_ErrWhere(tl, t_be);
return;
}
Fc(tl, 0, " },\n");
vcc_NextToken(tl);
}
Fc(tl, 0, "};\n");
Fc(tl, 0,
"\nstatic const struct vrt_dir_least_busy vdrr_%.*s = {\n",
PF(t_dir));
Fc(tl, 0, "\t.name = \"%.*s\",\n", PF(t_dir));
Fc(tl, 0, "\t.nmember = %d,\n", nelem);
Fc(tl, 0, "\t.members = vdrre_%.*s,\n", PF(t_dir));
Fc(tl, 0, "};\n");
Fi(tl, 0, "\tVRT_init_dir_least_busy("
"cli, &VGC_backend_%.*s , &vdrr_%.*s);\n", PF(t_dir), PF(t_dir));
Ff(tl, 0, "\tVRT_fini_dir(cli, VGC_backend_%.*s);\n", PF(t_dir));
}
static void
parse_new_syntax(struct tokenlist *tl)
{
vsb_printf(tl->sb, "Please change \"%.*s\" to \"return(%.*s)\".\n",
PF(tl->t), PF(tl->t));
vcc_ErrWhere(tl, tl->t);
}
void
vcc__ErrInternal(struct tokenlist *tl, const char *func, unsigned line)
{
vsb_printf(tl->sb, "VCL compiler internal error at %s():%u\n",
func, line);
tl->err = 1;
}
static void
check_writebit(struct tokenlist *tl, const struct var *vp)
{
if (vp->access == V_RW || vp->access == V_WO)
return;
vsb_printf(tl->sb, "Variable %.*s cannot be modified.\n", PF(tl->t));
vcc_ErrWhere(tl, tl->t);
}
static int
vcc_decstr(struct tokenlist *tl)
{
const char *p;
char *q;
unsigned char u;
assert(tl->t->tok == CSTR);
tl->t->dec = TlAlloc(tl, (tl->t->e - tl->t->b) - 1);
assert(tl->t->dec != NULL);
q = tl->t->dec;
for (p = tl->t->b + 1; p < tl->t->e - 1; ) {
if (*p != '%') {
*q++ = *p++;
continue;
}
if (p + 4 > tl->t->e) {
vcc_AddToken(tl, CSTR, p, tl->t->e);
vsb_printf(tl->sb,
"Incomplete %%xx escape\n");
vcc_ErrWhere(tl, tl->t);
return(1);
}
if (!isxdigit(p[1]) || !isxdigit(p[2])) {
vcc_AddToken(tl, CSTR, p, p + 3);
vsb_printf(tl->sb,
"Invalid hex char in %%xx escape\n");
vcc_ErrWhere(tl, tl->t);
return(1);
}
u = (vcc_xdig(p[1]) * 16 + vcc_xdig(p[2])) & 0xff;
if (!isgraph(u)) {
vcc_AddToken(tl, CSTR, p, p + 3);
vsb_printf(tl->sb,
"Control character in %%xx escape\n");
vcc_ErrWhere(tl, tl->t);
return(1);
}
*q++ = u;
p += 3;
}
*q++ = '\0';
return (0);
}
void
vcc_ParseRoundRobinDirector(struct tokenlist *tl)
{
struct token *t_field, *t_be;
int nelem;
struct fld_spec *fs;
const char *first;
char *p;
fs = vcc_FldSpec(tl, "!backend", NULL);
Fc(tl, 0, "\nstatic const struct vrt_dir_round_robin_entry "
"vdrre_%.*s[] = {\n", PF(tl->t_dir));
for (nelem = 0; tl->t->tok != '}'; nelem++) { /* List of members */
first = "";
t_be = tl->t;
vcc_ResetFldSpec(fs);
SkipToken(tl, '{');
Fc(tl, 0, "\t{");
while (tl->t->tok != '}') { /* Member fields */
vcc_IsField(tl, &t_field, fs);
ERRCHK(tl);
if (vcc_IdIs(t_field, "backend")) {
vcc_ParseBackendHost(tl, nelem, &p);
ERRCHK(tl);
AN(p);
Fc(tl, 0, "%s .host = VGC_backend_%s",
first, p);
} else {
ErrInternal(tl);
}
first = ", ";
}
vcc_FieldsOk(tl, fs);
if (tl->err) {
vsb_printf(tl->sb,
"\nIn member host specification starting at:\n");
vcc_ErrWhere(tl, t_be);
return;
}
Fc(tl, 0, " },\n");
vcc_NextToken(tl);
}
Fc(tl, 0, "};\n");
Fc(tl, 0,
"\nstatic const struct vrt_dir_round_robin vgc_dir_priv_%.*s = {\n",
PF(tl->t_dir));
Fc(tl, 0, "\t.name = \"%.*s\",\n", PF(tl->t_dir));
Fc(tl, 0, "\t.nmember = %d,\n", nelem);
Fc(tl, 0, "\t.members = vdrre_%.*s,\n", PF(tl->t_dir));
Fc(tl, 0, "};\n");
}
void
vcc_NextToken(struct tokenlist *tl)
{
tl->t = VTAILQ_NEXT(tl->t, list);
if (tl->t == NULL) {
vsb_printf(tl->sb,
"Ran out of input, something is missing or"
" maybe unbalanced (...) or {...}\n");
tl->err = 1;
return;
}
}
//lint -e{818}
void
vtc_dump(struct vtclog *vl, unsigned lvl, const char *pfx, const char *str)
{
int nl = 1;
CHECK_OBJ_NOTNULL(vl, VTCLOG_MAGIC);
assert(lvl < NLEAD);
AZ(pthread_mutex_lock(&vl->mtx));
vsb_clear(vl->vsb);
if (pfx == NULL)
pfx = "";
if (str == NULL)
vsb_printf(vl->vsb, "%s %-4s %s(null)\n",
lead[lvl], vl->id, pfx);
else
for(; *str != '\0'; str++) {
if (nl) {
vsb_printf(vl->vsb, "%s %-4s %s| ",
lead[lvl], vl->id, pfx);
nl = 0;
}
if (*str == '\r')
vsb_printf(vl->vsb, "\\r");
else if (*str == '\t')
vsb_printf(vl->vsb, "\\t");
else if (*str == '\n') {
vsb_printf(vl->vsb, "\\n\n");
nl = 1;
} else if (*str < 0x20 || *str > 0x7e)
vsb_printf(vl->vsb, "\\x%02x", *str);
else
vsb_printf(vl->vsb, "%c", *str);
}
if (!nl)
vsb_printf(vl->vsb, "\n");
vsb_finish(vl->vsb);
AZ(vsb_overflowed(vl->vsb));
vtc_log_emit(vl, lvl);
vsb_clear(vl->vsb);
AZ(pthread_mutex_unlock(&vl->mtx));
if (lvl == 0) {
vtc_error = 1;
if (pthread_self() != vtc_thread)
pthread_exit(NULL);
}
}
static void
cmd_http_chunked(CMD_ARGS)
{
struct http *hp;
(void)cmd;
(void)vl;
CAST_OBJ_NOTNULL(hp, priv, HTTP_MAGIC);
AN(av[1]);
AZ(av[2]);
vsb_clear(hp->vsb);
vsb_printf(hp->vsb, "%x%s%s%s", strlen(av[1]), nl, av[1], nl);
http_write(hp, 4, "chunked");
}
/*
* Quote a string
*/
void
vsb_quote(struct vsb *s, const char *p, int len, int how)
{
const char *q;
int quote = 0;
(void)how; /* For future enhancements */
if (len == -1)
len = strlen(p);
for (q = p; q < p + len; q++) {
if (!isgraph(*q) || *q == '"' || *q == '\\') {
quote++;
break;
}
}
if (!quote) {
(void)vsb_bcat(s, p, len);
return;
}
(void)vsb_putc(s, '"');
for (q = p; q < p + len; q++) {
switch (*q) {
case ' ':
(void)vsb_putc(s, *q);
break;
case '\\':
case '"':
(void)vsb_putc(s, '\\');
(void)vsb_putc(s, *q);
break;
case '\n':
(void)vsb_cat(s, "\\n");
break;
case '\r':
(void)vsb_cat(s, "\\r");
break;
case '\t':
(void)vsb_cat(s, "\\t");
break;
default:
if (isgraph(*q))
(void)vsb_putc(s, *q);
else
(void)vsb_printf(s, "\\%o", *q & 0xff);
break;
}
}
(void)vsb_putc(s, '"');
}
static void
vcc_expr_not(struct vcc *tl, struct expr **e, enum var_type fmt)
{
struct expr *e2;
struct token *tk;
*e = NULL;
if (fmt != BOOL || tl->t->tok != '!') {
vcc_expr_cmp(tl, e, fmt);
return;
}
vcc_NextToken(tl);
tk = tl->t;
vcc_expr_cmp(tl, &e2, fmt);
ERRCHK(tl);
if (e2->fmt == BOOL) {
*e = vcc_expr_edit(BOOL, "!(\v1)", e2, NULL);
return;
}
vsb_printf(tl->sb, "'!' must be followed by BOOL, found ");
vsb_printf(tl->sb, "%s.\n", vcc_Type(e2->fmt));
vcc_ErrWhere2(tl, tk, tl->t);
}
void
vcc_ErrWhere(struct tokenlist *tl, const struct token *t)
{
unsigned x, y;
const char *p, *l, *e;
vcc_icoord(tl->sb, t, &l);
vsb_printf(tl->sb, "\n");
x = y = 0;
e = t->src->e;
for (p = l; p < e && *p != '\n'; p++) {
if (*p == '\t') {
y &= ~7;
y += 8;
while (x < y) {
vsb_bcat(tl->sb, " ", 1);
x++;
}
} else {
x++;
y++;
vsb_bcat(tl->sb, p, 1);
}
}
vsb_cat(tl->sb, "\n");
x = y = 0;
for (p = l; p < e && *p != '\n'; p++) {
if (p >= t->b && p < t->e) {
vsb_bcat(tl->sb, "#", 1);
x++;
y++;
continue;
}
if (*p == '\t') {
y &= ~7;
y += 8;
} else
y++;
while (x < y) {
vsb_bcat(tl->sb, "-", 1);
x++;
}
}
vsb_cat(tl->sb, "\n");
tl->err = 1;
}
static void
parse_restart(struct tokenlist *tl)
{
struct token *t1;
t1 = VTAILQ_NEXT(tl->t, list);
if (t1->tok == ID && vcc_IdIs(t1, "rollback")) {
Fb(tl, 1, "VRT_Rollback(sp);\n");
vcc_NextToken(tl);
} else if (t1->tok != ';') {
vsb_printf(tl->sb, "Expected \"rollback\" or semicolon.\n");
vcc_ErrWhere(tl, t1);
ERRCHK(tl);
}
Fb(tl, 1, "VRT_done(sp, VCL_RET_RESTART);\n");
vcc_ProcAction(tl->curproc, VCL_RET_RESTART, tl->t);
vcc_NextToken(tl);
}
static void
parse_unset(struct tokenlist *tl)
{
struct var *vp;
vcc_NextToken(tl);
ExpectErr(tl, VAR);
vp = vcc_FindVar(tl, tl->t, vcc_vars);
ERRCHK(tl);
assert(vp != NULL);
if (vp->fmt != STRING || vp->hdr == NULL) {
vsb_printf(tl->sb, "Only http header lines can be unset.\n");
vcc_ErrWhere(tl, tl->t);
return;
}
check_writebit(tl, vp);
ERRCHK(tl);
Fb(tl, 1, "%s0);\n", vp->lname);
vcc_NextToken(tl);
}
static void
vcc_expr_mul(struct vcc *tl, struct expr **e, enum var_type fmt)
{
struct expr *e2;
enum var_type f2, f3;
struct token *tk;
*e = NULL;
vcc_expr4(tl, e, fmt);
ERRCHK(tl);
f3 = f2 = (*e)->fmt;
switch(f2) {
case INT: f2 = INT; break;
case DURATION: f2 = REAL; break;
case BYTES: f2 = REAL; break;
default:
if (tl->t->tok != '*' && tl->t->tok != '/')
return;
vsb_printf(tl->sb, "Operator %.*s not possible on type %s.\n",
PF(tl->t), vcc_Type(f2));
vcc_ErrWhere(tl, tl->t);
return;
}
while (tl->t->tok == '*' || tl->t->tok == '/') {
tk = tl->t;
vcc_NextToken(tl);
vcc_expr4(tl, &e2, f2);
ERRCHK(tl);
assert(e2->fmt == f2);
if (tk->tok == '*')
*e = vcc_expr_edit(f3, "(\v1*\v2)", *e, e2);
else
*e = vcc_expr_edit(f3, "(\v1/\v2)", *e, e2);
}
}
static void
parse_purge(struct tokenlist *tl)
{
const struct purge_var *pv;
vcc_NextToken(tl);
ExpectErr(tl, '(');
vcc_NextToken(tl);
if (tl->t->tok == VAR) {
Fb(tl, 1, "VRT_ban(sp,\n");
tl->indent += INDENT;
while (1) {
ExpectErr(tl, VAR);
/* Check valididity of purge variable */
for (pv = purge_var; pv->name != NULL; pv++) {
if (!strncmp(pv->name, tl->t->b,
strlen(pv->name)))
break;
}
if (pv->name == NULL) {
vsb_printf(tl->sb, "Unknown purge variable.");
vcc_ErrWhere(tl, tl->t);
return;
}
if ((pv->flag & PVAR_HTTP) &&
tl->t->b + strlen(pv->name) >= tl->t->e) {
vsb_printf(tl->sb, "Missing header name.");
vcc_ErrWhere(tl, tl->t);
return;
}
Fb(tl, 1, " \"%.*s\",\n", PF(tl->t));
vcc_NextToken(tl);
switch(tl->t->tok) {
case '~':
case T_NOMATCH:
case T_EQ:
case T_NEQ:
Fb(tl, 1, " \"%.*s\",\n", PF(tl->t));
break;
default:
vsb_printf(tl->sb,
"Expected ~, !~, == or !=.\n");
vcc_ErrWhere(tl, tl->t);
return;
}
vcc_NextToken(tl);
Fb(tl, 1, " ");
if (!vcc_StringVal(tl)) {
vcc_ExpectedStringval(tl);
return;
}
Fb(tl, 0, ",\n");
if (tl->t->tok == ')')
break;
ExpectErr(tl, T_CAND);
Fb(tl, 1, "\"%.*s\",\n", PF(tl->t));
vcc_NextToken(tl);
}
Fb(tl, 1, "0);\n");
tl->indent -= INDENT;
} else {
Fb(tl, 1, "VRT_ban_string(sp, ");
if (!vcc_StringVal(tl)) {
vcc_ExpectedStringval(tl);
return;
}
do
Fb(tl, 0, ", ");
while (vcc_StringVal(tl));
Fb(tl, 0, "vrt_magic_string_end);\n");
}
ExpectErr(tl, ')');
vcc_NextToken(tl);
}
static void
parse_set(struct tokenlist *tl)
{
struct var *vp;
struct token *at, *vt;
vcc_NextToken(tl);
ExpectErr(tl, VAR);
vt = tl->t;
vp = vcc_FindVar(tl, tl->t, vcc_vars);
ERRCHK(tl);
assert(vp != NULL);
check_writebit(tl, vp);
ERRCHK(tl);
Fb(tl, 1, "%s", vp->lname);
vcc_NextToken(tl);
switch (vp->fmt) {
case INT:
case SIZE:
case TIME:
case RTIME:
case FLOAT:
if (tl->t->tok != '=')
Fb(tl, 0, "%s %c ", vp->rname, *tl->t->b);
at = tl->t;
vcc_NextToken(tl);
switch (at->tok) {
case T_MUL:
case T_DIV:
Fb(tl, 0, "%g", vcc_DoubleVal(tl));
break;
case T_INCR:
case T_DECR:
case '=':
vcc_VarVal(tl, vp, vt);
ERRCHK(tl);
break;
default:
vsb_printf(tl->sb, "Invalid assignment operator.\n");
vcc_ErrWhere(tl, at);
return;
}
Fb(tl, 0, ");\n");
break;
#if 0 /* XXX: enable if we find a legit use */
case IP:
if (tl->t->tok != '=') {
illegal_assignment(tl, "IP numbers");
return;
}
vcc_NextToken(tl);
u = vcc_vcc_IpVal(tl);
Fb(tl, 0, "= %uU; /* %u.%u.%u.%u */\n",
u,
(u >> 24) & 0xff,
(u >> 16) & 0xff,
(u >> 8) & 0xff,
u & 0xff);
break;
#endif
case BACKEND:
if (tl->t->tok != '=') {
illegal_assignment(tl, "backend");
return;
}
vcc_NextToken(tl);
vcc_ExpectCid(tl);
ERRCHK(tl);
vcc_AddRef(tl, tl->t, R_BACKEND);
Fb(tl, 0, "VGCDIR(_%.*s)", PF(tl->t));
vcc_NextToken(tl);
Fb(tl, 0, ");\n");
break;
case HASH:
SkipToken(tl, T_INCR);
if (!vcc_StringVal(tl)) {
ERRCHK(tl);
vcc_ExpectedStringval(tl);
return;
}
Fb(tl, 0, ");\n");
/*
* We count the number of operations on the req.hash
* variable, so that varnishd can preallocate the worst case
* number of slots for composing the hash string.
*/
break;
case STRING:
if (tl->t->tok != '=') {
illegal_assignment(tl, "strings");
return;
}
vcc_NextToken(tl);
if (!vcc_StringVal(tl)) {
ERRCHK(tl);
vcc_ExpectedStringval(tl);
return;
}
do
Fb(tl, 0, ", ");
while (vcc_StringVal(tl));
if (tl->t->tok != ';') {
ERRCHK(tl);
vsb_printf(tl->sb,
"Expected variable, string or semicolon\n");
vcc_ErrWhere(tl, tl->t);
return;
}
Fb(tl, 0, "vrt_magic_string_end);\n");
break;
case BOOL:
if (tl->t->tok != '=') {
illegal_assignment(tl, "boolean");
return;
}
vcc_NextToken(tl);
ExpectErr(tl, ID);
if (vcc_IdIs(tl->t, "true")) {
Fb(tl, 0, " 1);\n", vp->lname);
} else if (vcc_IdIs(tl->t, "false")) {
Fb(tl, 0, " 0);\n", vp->lname);
} else {
vsb_printf(tl->sb,
"Expected true or false\n");
vcc_ErrWhere(tl, tl->t);
return;
}
vcc_NextToken(tl);
break;
default:
vsb_printf(tl->sb,
"Assignments not possible for type of '%s'\n", vp->name);
vcc_ErrWhere(tl, tl->t);
return;
}
}
void
vcc_Lexer(struct tokenlist *tl, struct source *sp)
{
const char *p, *q;
unsigned u;
tl->src = sp;
for (p = sp->b; p < sp->e; ) {
/* Skip any whitespace */
if (isspace(*p)) {
p++;
continue;
}
/* Skip '#.*\n' comments */
if (*p == '#') {
while (p < sp->e && *p != '\n')
p++;
continue;
}
/* Skip C-style comments */
if (*p == '/' && p[1] == '*') {
for (q = p + 2; q < sp->e; q++) {
if (*q == '/' && q[1] == '*') {
vsb_printf(tl->sb,
"/* ... */ comment contains /*\n");
vcc_AddToken(tl, EOI, p, p + 2);
vcc_ErrWhere(tl, tl->t);
vcc_AddToken(tl, EOI, q, q + 2);
vcc_ErrWhere(tl, tl->t);
return;
}
if (*q == '*' && q[1] == '/') {
p = q + 2;
break;
}
}
if (q < sp->e)
continue;
vcc_AddToken(tl, EOI, p, p + 2);
vsb_printf(tl->sb,
"Unterminated /* ... */ comment, starting at\n");
vcc_ErrWhere(tl, tl->t);
return;
}
/* Skip C++-style comments */
if (*p == '/' && p[1] == '/') {
while (p < sp->e && *p != '\n')
p++;
continue;
}
/* Recognize inline C-code */
if (*p == 'C' && p[1] == '{') {
for (q = p + 2; q < sp->e; q++) {
if (*q == '}' && q[1] == 'C') {
vcc_AddToken(tl, CSRC, p, q + 2);
break;
}
}
if (q < sp->e) {
p = q + 2;
continue;
}
vcc_AddToken(tl, EOI, p, p + 2);
vsb_printf(tl->sb,
"Unterminated inline C source, starting at\n");
vcc_ErrWhere(tl, tl->t);
return;
}
/* Recognize long-strings */
if (*p == '{' && p[1] == '"') {
for (q = p + 2; q < sp->e; q++) {
if (*q == '"' && q[1] == '}') {
vcc_AddToken(tl, CSTR, p, q + 2);
break;
}
}
if (q < sp->e) {
p = q + 2;
u = tl->t->e - tl->t->b;
u -= 4; /* {" ... "} */
tl->t->dec = TlAlloc(tl, u + 1 );
AN(tl->t->dec);
memcpy(tl->t->dec, tl->t->b + 2, u);
tl->t->dec[u] = '\0';
continue;
}
vcc_AddToken(tl, EOI, p, p + 2);
vsb_printf(tl->sb,
"Unterminated long-string, starting at\n");
vcc_ErrWhere(tl, tl->t);
return;
}
/* Match for the fixed tokens (see token.tcl) */
u = vcl_fixed_token(p, &q);
if (u != 0) {
vcc_AddToken(tl, u, p, q);
p = q;
continue;
}
/* Match strings, with \\ and \" escapes */
if (*p == '"') {
for (q = p + 1; q < sp->e; q++) {
if (*q == '"') {
q++;
break;
}
if (*q == '\r' || *q == '\n') {
vcc_AddToken(tl, EOI, p, q);
vsb_printf(tl->sb,
"Unterminated string at\n");
vcc_ErrWhere(tl, tl->t);
return;
}
}
vcc_AddToken(tl, CSTR, p, q);
if (vcc_decstr(tl))
return;
p = q;
continue;
}
/* Match Identifiers */
if (isident1(*p)) {
for (q = p; q < sp->e; q++)
if (!isident(*q))
break;
if (isvar(*q)) {
for (; q < sp->e; q++)
if (!isvar(*q))
break;
vcc_AddToken(tl, VAR, p, q);
} else {
vcc_AddToken(tl, ID, p, q);
}
p = q;
continue;
}
/* Match numbers { [0-9]+ } */
if (isdigit(*p)) {
for (q = p; q < sp->e; q++)
if (!isdigit(*q))
break;
vcc_AddToken(tl, CNUM, p, q);
p = q;
continue;
}
vcc_AddToken(tl, EOI, p, p + 1);
vsb_printf(tl->sb, "Syntax error at\n");
vcc_ErrWhere(tl, tl->t);
return;
}
}
