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builtin.c: typecheck builtin cfunctions in function_list #3209

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131 changes: 67 additions & 64 deletions src/builtin.c
Original file line number Diff line number Diff line change
Expand Up @@ -1790,85 +1790,88 @@ static jv f_have_decnum(jq_state *jq, jv a) {
#endif
}

#define CFUNC(func, name, arity) \
{.fptr = { .a ## arity = func }, name, arity}

#define LIBM_DD(name) \
{f_ ## name, #name, 1},
CFUNC(f_ ## name, #name, 1),
#define LIBM_DD_NO(name) LIBM_DD(name)
#define LIBM_DA(name, type) LIBM_DD(name)
#define LIBM_DA_NO(name, type) LIBM_DD(name)

#define LIBM_DDD(name) \
{f_ ## name, #name, 3},
CFUNC(f_ ## name, #name, 3),
#define LIBM_DDD_NO(name) LIBM_DDD(name)

#define LIBM_DDDD(name) \
{f_ ## name, #name, 4},
CFUNC(f_ ## name, #name, 4),
#define LIBM_DDDD_NO(name) LIBM_DDDD(name)

static const struct cfunction function_list[] = {
#include "libm.h"
{f_negate, "_negate", 1},
#define BINOP(name) {f_ ## name, "_" #name, 3},
CFUNC(f_negate, "_negate", 1),
#define BINOP(name) CFUNC(f_ ## name, "_" #name, 3),
BINOPS
#undef BINOP
{f_dump, "tojson", 1},
{f_json_parse, "fromjson", 1},
{f_tonumber, "tonumber", 1},
{f_tostring, "tostring", 1},
{f_keys, "keys", 1},
{f_keys_unsorted, "keys_unsorted", 1},
{f_startswith, "startswith", 2},
{f_endswith, "endswith", 2},
{f_string_split, "split", 2},
{f_string_explode, "explode", 1},
{f_string_implode, "implode", 1},
{f_string_indexes, "_strindices", 2},
{f_string_trim, "trim", 1},
{f_string_ltrim, "ltrim", 1},
{f_string_rtrim, "rtrim", 1},
{f_setpath, "setpath", 3}, // FIXME typechecking
{f_getpath, "getpath", 2},
{f_delpaths, "delpaths", 2},
{f_has, "has", 2},
{f_contains, "contains", 2},
{f_length, "length", 1},
{f_utf8bytelength, "utf8bytelength", 1},
{f_type, "type", 1},
{f_isinfinite, "isinfinite", 1},
{f_isnan, "isnan", 1},
{f_isnormal, "isnormal", 1},
{f_infinite, "infinite", 1},
{f_nan, "nan", 1},
{f_sort, "sort", 1},
{f_sort_by_impl, "_sort_by_impl", 2},
{f_group_by_impl, "_group_by_impl", 2},
{f_min, "min", 1},
{f_max, "max", 1},
{f_min_by_impl, "_min_by_impl", 2},
{f_max_by_impl, "_max_by_impl", 2},
{f_error, "error", 1},
{f_format, "format", 2},
{f_env, "env", 1},
{f_halt, "halt", 1},
{f_halt_error, "halt_error", 2},
{f_get_search_list, "get_search_list", 1},
{f_get_prog_origin, "get_prog_origin", 1},
{f_get_jq_origin, "get_jq_origin", 1},
{f_match, "_match_impl", 4},
{f_modulemeta, "modulemeta", 1},
{f_input, "input", 1},
{f_debug, "debug", 1},
{f_stderr, "stderr", 1},
{f_strptime, "strptime", 2},
{f_strftime, "strftime", 2},
{f_strflocaltime, "strflocaltime", 2},
{f_mktime, "mktime", 1},
{f_gmtime, "gmtime", 1},
{f_localtime, "localtime", 1},
{f_now, "now", 1},
{f_current_filename, "input_filename", 1},
{f_current_line, "input_line_number", 1},
{f_have_decnum, "have_decnum", 1},
{f_have_decnum, "have_literal_numbers", 1},
CFUNC(f_dump, "tojson", 1),
CFUNC(f_json_parse, "fromjson", 1),
CFUNC(f_tonumber, "tonumber", 1),
CFUNC(f_tostring, "tostring", 1),
CFUNC(f_keys, "keys", 1),
CFUNC(f_keys_unsorted, "keys_unsorted", 1),
CFUNC(f_startswith, "startswith", 2),
CFUNC(f_endswith, "endswith", 2),
CFUNC(f_string_split, "split", 2),
CFUNC(f_string_explode, "explode", 1),
CFUNC(f_string_implode, "implode", 1),
CFUNC(f_string_indexes, "_strindices", 2),
CFUNC(f_string_trim, "trim", 1),
CFUNC(f_string_ltrim, "ltrim", 1),
CFUNC(f_string_rtrim, "rtrim", 1),
CFUNC(f_setpath, "setpath", 3),
CFUNC(f_getpath, "getpath", 2),
CFUNC(f_delpaths, "delpaths", 2),
CFUNC(f_has, "has", 2),
CFUNC(f_contains, "contains", 2),
CFUNC(f_length, "length", 1),
CFUNC(f_utf8bytelength, "utf8bytelength", 1),
CFUNC(f_type, "type", 1),
CFUNC(f_isinfinite, "isinfinite", 1),
CFUNC(f_isnan, "isnan", 1),
CFUNC(f_isnormal, "isnormal", 1),
CFUNC(f_infinite, "infinite", 1),
CFUNC(f_nan, "nan", 1),
CFUNC(f_sort, "sort", 1),
CFUNC(f_sort_by_impl, "_sort_by_impl", 2),
CFUNC(f_group_by_impl, "_group_by_impl", 2),
CFUNC(f_min, "min", 1),
CFUNC(f_max, "max", 1),
CFUNC(f_min_by_impl, "_min_by_impl", 2),
CFUNC(f_max_by_impl, "_max_by_impl", 2),
CFUNC(f_error, "error", 1),
CFUNC(f_format, "format", 2),
CFUNC(f_env, "env", 1),
CFUNC(f_halt, "halt", 1),
CFUNC(f_halt_error, "halt_error", 2),
CFUNC(f_get_search_list, "get_search_list", 1),
CFUNC(f_get_prog_origin, "get_prog_origin", 1),
CFUNC(f_get_jq_origin, "get_jq_origin", 1),
CFUNC(f_match, "_match_impl", 4),
CFUNC(f_modulemeta, "modulemeta", 1),
CFUNC(f_input, "input", 1),
CFUNC(f_debug, "debug", 1),
CFUNC(f_stderr, "stderr", 1),
CFUNC(f_strptime, "strptime", 2),
CFUNC(f_strftime, "strftime", 2),
CFUNC(f_strflocaltime, "strflocaltime", 2),
CFUNC(f_mktime, "mktime", 1),
CFUNC(f_gmtime, "gmtime", 1),
CFUNC(f_localtime, "localtime", 1),
CFUNC(f_now, "now", 1),
CFUNC(f_current_filename, "input_filename", 1),
CFUNC(f_current_line, "input_line_number", 1),
CFUNC(f_have_decnum, "have_decnum", 1),
CFUNC(f_have_decnum, "have_literal_numbers", 1),
};
#undef LIBM_DDDD_NO
#undef LIBM_DDD_NO
Expand Down
11 changes: 8 additions & 3 deletions src/bytecode.h
Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,7 @@
#define BYTECODE_H
#include <stdint.h>

#include "jv.h"
#include "jq.h"

typedef enum {
#define OP(name, imm, in, out) name,
Expand Down Expand Up @@ -44,9 +44,14 @@ struct opcode_description {
const struct opcode_description* opcode_describe(opcode op);


#define MAX_CFUNCTION_ARGS 10
#define MAX_CFUNCTION_ARGS 4
struct cfunction {
jv (*fptr)();
union {
jv (*a1)(jq_state *, jv);
jv (*a2)(jq_state *, jv, jv);
jv (*a3)(jq_state *, jv, jv, jv);
jv (*a4)(jq_state *, jv, jv, jv, jv);
} fptr;
const char* name;
int nargs;
};
Expand Down
39 changes: 15 additions & 24 deletions src/execute.c
Original file line number Diff line number Diff line change
Expand Up @@ -341,8 +341,6 @@ static void set_error(jq_state *jq, jv value) {
#define ON_BACKTRACK(op) ((op)+NUM_OPCODES)

jv jq_next(jq_state *jq) {
jv cfunc_input[MAX_CFUNCTION_ARGS];

jv_nomem_handler(jq->nomem_handler, jq->nomem_handler_data);

uint16_t* pc = stack_restore(jq);
Expand Down Expand Up @@ -909,34 +907,27 @@ jv jq_next(jq_state *jq) {

case CALL_BUILTIN: {
int nargs = *pc++;
jv top = stack_pop(jq);
jv* in = cfunc_input;
in[0] = top;
for (int i = 1; i < nargs; i++) {
in[i] = stack_pop(jq);
}
struct cfunction* function = &frame_current(jq)->bc->globals->cfunctions[*pc++];
jv in[MAX_CFUNCTION_ARGS];
for (int i = 0; i < nargs; ++i)
in[i] = stack_pop(jq);

jv top;
switch (function->nargs) {
case 1: top = ((jv (*)(jq_state *, jv))function->fptr)(jq, in[0]); break;
case 2: top = ((jv (*)(jq_state *, jv, jv))function->fptr)(jq, in[0], in[1]); break;
case 3: top = ((jv (*)(jq_state *, jv, jv, jv))function->fptr)(jq, in[0], in[1], in[2]); break;
case 4: top = ((jv (*)(jq_state *, jv, jv, jv, jv))function->fptr)(jq, in[0], in[1], in[2], in[3]); break;
case 5: top = ((jv (*)(jq_state *, jv, jv, jv, jv, jv))function->fptr)(jq, in[0], in[1], in[2], in[3], in[4]); break;
// FIXME: a) up to 7 arguments (input + 6), b) should assert
// because the compiler should not generate this error.
default: return jv_invalid_with_msg(jv_string("Function takes too many arguments"));
case 1: top = function->fptr.a1(jq, in[0]); break;
case 2: top = function->fptr.a2(jq, in[0], in[1]); break;
case 3: top = function->fptr.a3(jq, in[0], in[1], in[2]); break;
case 4: top = function->fptr.a4(jq, in[0], in[1], in[2], in[3]); break;
default: assert(0 && "Invalid number of arguments");
}

if (jv_is_valid(top)) {
stack_push(jq, top);
} else if (jv_invalid_has_msg(jv_copy(top))) {
set_error(jq, top);
goto do_backtrack;
} else {
// C-coded function returns invalid w/o msg? -> backtrack, as if
// it had returned `empty`
if (!jv_is_valid(top)) {
if (jv_invalid_has_msg(jv_copy(top)))
set_error(jq, top);
goto do_backtrack;
}

stack_push(jq, top);
break;
}

Expand Down
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