mirror of
https://github.com/janet-lang/janet
synced 2024-11-29 11:29:54 +00:00
1005 lines
35 KiB
C
1005 lines
35 KiB
C
/*
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* Copyright (c) 2020 Calvin Rose
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#ifndef JANET_AMALG
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#include "features.h"
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#include <janet.h>
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#include "util.h"
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#include "state.h"
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#include <math.h>
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#endif
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#include <string.h>
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#include <ctype.h>
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/* Implements a pretty printer for Janet. The pretty printer
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* is simple and not that flexible, but fast. */
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/* Temporary buffer size */
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#define BUFSIZE 64
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static void number_to_string_b(JanetBuffer *buffer, double x) {
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janet_buffer_ensure(buffer, buffer->count + BUFSIZE, 2);
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const char *fmt = (x == floor(x) &&
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x <= JANET_INTMAX_DOUBLE &&
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x >= JANET_INTMIN_DOUBLE) ? "%.0f" : "%g";
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int count = snprintf((char *) buffer->data + buffer->count, BUFSIZE, fmt, x);
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buffer->count += count;
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}
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/* expects non positive x */
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static int count_dig10(int32_t x) {
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int result = 1;
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for (;;) {
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if (x > -10) return result;
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if (x > -100) return result + 1;
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if (x > -1000) return result + 2;
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if (x > -10000) return result + 3;
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x /= 10000;
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result += 4;
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}
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}
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static void integer_to_string_b(JanetBuffer *buffer, int32_t x) {
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janet_buffer_extra(buffer, BUFSIZE);
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uint8_t *buf = buffer->data + buffer->count;
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int32_t neg = 0;
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int32_t len = 0;
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if (x == 0) {
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buf[0] = '0';
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buffer->count++;
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return;
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}
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if (x > 0) {
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x = -x;
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} else {
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neg = 1;
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*buf++ = '-';
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}
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len = count_dig10(x);
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buf += len;
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while (x) {
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uint8_t digit = (uint8_t) - (x % 10);
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*(--buf) = '0' + digit;
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x /= 10;
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}
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buffer->count += len + neg;
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}
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#define HEX(i) (((uint8_t *) janet_base64)[(i)])
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/* Returns a string description for a pointer. Truncates
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* title to 32 characters */
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static void string_description_b(JanetBuffer *buffer, const char *title, void *pointer) {
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janet_buffer_ensure(buffer, buffer->count + BUFSIZE, 2);
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uint8_t *c = buffer->data + buffer->count;
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int32_t i;
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union {
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uint8_t bytes[sizeof(void *)];
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void *p;
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} pbuf;
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pbuf.p = pointer;
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*c++ = '<';
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/* Maximum of 32 bytes for abstract type name */
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for (i = 0; title[i] && i < 32; ++i)
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*c++ = ((uint8_t *)title) [i];
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*c++ = ' ';
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*c++ = '0';
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*c++ = 'x';
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#if defined(JANET_64)
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#define POINTSIZE 6
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#else
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#define POINTSIZE (sizeof(void *))
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#endif
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for (i = POINTSIZE; i > 0; --i) {
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uint8_t byte = pbuf.bytes[i - 1];
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*c++ = HEX(byte >> 4);
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*c++ = HEX(byte & 0xF);
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}
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*c++ = '>';
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buffer->count = (int32_t)(c - buffer->data);
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#undef POINTSIZE
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}
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static void janet_escape_string_impl(JanetBuffer *buffer, const uint8_t *str, int32_t len) {
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janet_buffer_push_u8(buffer, '"');
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for (int32_t i = 0; i < len; ++i) {
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uint8_t c = str[i];
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switch (c) {
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case '"':
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janet_buffer_push_bytes(buffer, (const uint8_t *)"\\\"", 2);
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break;
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case '\n':
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janet_buffer_push_bytes(buffer, (const uint8_t *)"\\n", 2);
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break;
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case '\r':
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janet_buffer_push_bytes(buffer, (const uint8_t *)"\\r", 2);
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break;
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case '\0':
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janet_buffer_push_bytes(buffer, (const uint8_t *)"\\0", 2);
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break;
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case '\f':
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janet_buffer_push_bytes(buffer, (const uint8_t *)"\\f", 2);
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break;
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case '\v':
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janet_buffer_push_bytes(buffer, (const uint8_t *)"\\v", 2);
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break;
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case 27:
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janet_buffer_push_bytes(buffer, (const uint8_t *)"\\e", 2);
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break;
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case '\\':
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janet_buffer_push_bytes(buffer, (const uint8_t *)"\\\\", 2);
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break;
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case '\t':
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janet_buffer_push_bytes(buffer, (const uint8_t *)"\\t", 2);
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break;
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default:
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if (c < 32 || c > 126) {
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uint8_t buf[4];
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buf[0] = '\\';
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buf[1] = 'x';
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buf[2] = janet_base64[(c >> 4) & 0xF];
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buf[3] = janet_base64[c & 0xF];
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janet_buffer_push_bytes(buffer, buf, 4);
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} else {
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janet_buffer_push_u8(buffer, c);
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}
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break;
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}
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}
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janet_buffer_push_u8(buffer, '"');
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}
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static void janet_escape_string_b(JanetBuffer *buffer, const uint8_t *str) {
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janet_escape_string_impl(buffer, str, janet_string_length(str));
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}
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static void janet_escape_buffer_b(JanetBuffer *buffer, JanetBuffer *bx) {
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if (bx == buffer) {
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/* Ensures buffer won't resize while escaping */
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janet_buffer_ensure(bx, bx->count + 5 * bx->count + 3, 1);
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}
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janet_buffer_push_u8(buffer, '@');
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janet_escape_string_impl(buffer, bx->data, bx->count);
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}
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void janet_to_string_b(JanetBuffer *buffer, Janet x) {
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switch (janet_type(x)) {
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case JANET_NIL:
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janet_buffer_push_cstring(buffer, "");
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break;
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case JANET_BOOLEAN:
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janet_buffer_push_cstring(buffer,
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janet_unwrap_boolean(x) ? "true" : "false");
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break;
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case JANET_NUMBER:
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number_to_string_b(buffer, janet_unwrap_number(x));
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break;
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case JANET_STRING:
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case JANET_SYMBOL:
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case JANET_KEYWORD:
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janet_buffer_push_bytes(buffer,
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janet_unwrap_string(x),
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janet_string_length(janet_unwrap_string(x)));
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break;
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case JANET_BUFFER: {
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JanetBuffer *to = janet_unwrap_buffer(x);
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/* Prevent resizing buffer while appending */
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if (buffer == to) janet_buffer_extra(buffer, to->count);
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janet_buffer_push_bytes(buffer, to->data, to->count);
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break;
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}
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case JANET_ABSTRACT: {
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JanetAbstract p = janet_unwrap_abstract(x);
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const JanetAbstractType *t = janet_abstract_type(p);
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if (t->tostring != NULL) {
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t->tostring(p, buffer);
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} else {
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string_description_b(buffer, t->name, p);
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}
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}
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return;
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case JANET_CFUNCTION: {
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Janet check = janet_table_get(janet_vm_registry, x);
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if (janet_checktype(check, JANET_SYMBOL)) {
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janet_buffer_push_cstring(buffer, "<cfunction ");
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janet_buffer_push_bytes(buffer,
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janet_unwrap_symbol(check),
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janet_string_length(janet_unwrap_symbol(check)));
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janet_buffer_push_u8(buffer, '>');
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break;
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}
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goto fallthrough;
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}
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case JANET_FUNCTION: {
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JanetFunction *fun = janet_unwrap_function(x);
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JanetFuncDef *def = fun->def;
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if (def->name) {
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const uint8_t *n = def->name;
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janet_buffer_push_cstring(buffer, "<function ");
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janet_buffer_push_bytes(buffer, n, janet_string_length(n));
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janet_buffer_push_u8(buffer, '>');
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break;
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}
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goto fallthrough;
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}
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fallthrough:
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default:
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string_description_b(buffer, janet_type_names[janet_type(x)], janet_unwrap_pointer(x));
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break;
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}
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}
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/* See parse.c for full table */
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static const uint32_t pp_symchars[8] = {
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0x00000000, 0xf7ffec72, 0xc7ffffff, 0x07fffffe,
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0x00000000, 0x00000000, 0x00000000, 0x00000000
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};
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static int pp_is_symbol_char(uint8_t c) {
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return pp_symchars[c >> 5] & ((uint32_t)1 << (c & 0x1F));
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}
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/* Check if a symbol or keyword contains no symbol characters */
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static int contains_bad_chars(const uint8_t *sym, int issym) {
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int32_t len = janet_string_length(sym);
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if (len && issym && sym[0] >= '0' && sym[0] <= '9') return 1;
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for (int32_t i = 0; i < len; i++) {
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if (!pp_is_symbol_char(sym[i])) return 1;
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}
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return 0;
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}
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void janet_description_b(JanetBuffer *buffer, Janet x) {
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switch (janet_type(x)) {
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default:
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break;
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case JANET_NIL:
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janet_buffer_push_cstring(buffer, "nil");
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return;
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case JANET_KEYWORD:
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janet_buffer_push_u8(buffer, ':');
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break;
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case JANET_STRING:
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janet_escape_string_b(buffer, janet_unwrap_string(x));
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return;
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case JANET_BUFFER: {
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JanetBuffer *b = janet_unwrap_buffer(x);
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janet_escape_buffer_b(buffer, b);
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return;
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}
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case JANET_ABSTRACT: {
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JanetAbstract p = janet_unwrap_abstract(x);
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const JanetAbstractType *t = janet_abstract_type(p);
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if (t->tostring != NULL) {
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janet_buffer_push_cstring(buffer, "<");
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janet_buffer_push_cstring(buffer, t->name);
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janet_buffer_push_cstring(buffer, " ");
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t->tostring(p, buffer);
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janet_buffer_push_cstring(buffer, ">");
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} else {
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string_description_b(buffer, t->name, p);
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}
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return;
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}
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}
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janet_to_string_b(buffer, x);
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}
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const uint8_t *janet_description(Janet x) {
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JanetBuffer b;
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janet_buffer_init(&b, 10);
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janet_description_b(&b, x);
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const uint8_t *ret = janet_string(b.data, b.count);
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janet_buffer_deinit(&b);
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return ret;
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}
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/* Convert any value to a janet string. Similar to description, but
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* strings, symbols, and buffers will return their content. */
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const uint8_t *janet_to_string(Janet x) {
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switch (janet_type(x)) {
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default: {
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JanetBuffer b;
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janet_buffer_init(&b, 10);
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janet_to_string_b(&b, x);
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const uint8_t *ret = janet_string(b.data, b.count);
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janet_buffer_deinit(&b);
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return ret;
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}
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case JANET_BUFFER:
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return janet_string(janet_unwrap_buffer(x)->data, janet_unwrap_buffer(x)->count);
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case JANET_STRING:
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case JANET_SYMBOL:
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case JANET_KEYWORD:
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return janet_unwrap_string(x);
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}
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}
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/* Hold state for pretty printer. */
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struct pretty {
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JanetBuffer *buffer;
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int depth;
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int indent;
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int flags;
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int32_t bufstartlen;
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JanetTable seen;
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};
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/* Print jdn format */
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static int print_jdn_one(struct pretty *S, Janet x, int depth) {
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if (depth == 0) return 1;
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switch (janet_type(x)) {
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case JANET_NIL:
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case JANET_BOOLEAN:
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case JANET_BUFFER:
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case JANET_STRING:
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janet_description_b(S->buffer, x);
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break;
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case JANET_NUMBER:
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janet_buffer_ensure(S->buffer, S->buffer->count + BUFSIZE, 2);
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int count = snprintf((char *) S->buffer->data + S->buffer->count, BUFSIZE, "%.17g", janet_unwrap_number(x));
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S->buffer->count += count;
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break;
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case JANET_SYMBOL:
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case JANET_KEYWORD:
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if (contains_bad_chars(janet_unwrap_keyword(x), janet_type(x) == JANET_SYMBOL)) return 1;
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janet_description_b(S->buffer, x);
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break;
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case JANET_TUPLE: {
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JanetTuple t = janet_unwrap_tuple(x);
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int isb = janet_tuple_flag(t) & JANET_TUPLE_FLAG_BRACKETCTOR;
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janet_buffer_push_u8(S->buffer, isb ? '[' : '(');
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for (int32_t i = 0; i < janet_tuple_length(t); i++) {
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if (i) janet_buffer_push_u8(S->buffer, ' ');
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if (print_jdn_one(S, t[i], depth - 1)) return 1;
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}
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janet_buffer_push_u8(S->buffer, isb ? ']' : ')');
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}
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break;
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case JANET_ARRAY: {
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janet_table_put(&S->seen, x, janet_wrap_true());
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JanetArray *a = janet_unwrap_array(x);
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janet_buffer_push_cstring(S->buffer, "@[");
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for (int32_t i = 0; i < a->count; i++) {
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if (i) janet_buffer_push_u8(S->buffer, ' ');
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if (print_jdn_one(S, a->data[i], depth - 1)) return 1;
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}
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janet_buffer_push_u8(S->buffer, ']');
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}
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break;
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case JANET_TABLE: {
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janet_table_put(&S->seen, x, janet_wrap_true());
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JanetTable *tab = janet_unwrap_table(x);
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janet_buffer_push_cstring(S->buffer, "@{");
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int isFirst = 1;
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for (int32_t i = 0; i < tab->capacity; i++) {
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const JanetKV *kv = tab->data + i;
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if (janet_checktype(kv->key, JANET_NIL)) continue;
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if (!isFirst) janet_buffer_push_u8(S->buffer, ' ');
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isFirst = 0;
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if (print_jdn_one(S, kv->key, depth - 1)) return 1;
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janet_buffer_push_u8(S->buffer, ' ');
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if (print_jdn_one(S, kv->value, depth - 1)) return 1;
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}
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janet_buffer_push_u8(S->buffer, '}');
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}
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break;
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case JANET_STRUCT: {
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JanetStruct st = janet_unwrap_struct(x);
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janet_buffer_push_u8(S->buffer, '{');
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int isFirst = 1;
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for (int32_t i = 0; i < janet_struct_capacity(st); i++) {
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const JanetKV *kv = st + i;
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if (janet_checktype(kv->key, JANET_NIL)) continue;
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if (!isFirst) janet_buffer_push_u8(S->buffer, ' ');
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isFirst = 0;
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if (print_jdn_one(S, kv->key, depth - 1)) return 1;
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janet_buffer_push_u8(S->buffer, ' ');
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if (print_jdn_one(S, kv->value, depth - 1)) return 1;
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}
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janet_buffer_push_u8(S->buffer, '}');
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}
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break;
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default:
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return 1;
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}
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return 0;
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}
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static void print_newline(struct pretty *S, int just_a_space) {
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int i;
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if (just_a_space || (S->flags & JANET_PRETTY_ONELINE)) {
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janet_buffer_push_u8(S->buffer, ' ');
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return;
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}
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janet_buffer_push_u8(S->buffer, '\n');
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for (i = 0; i < S->indent; i++) {
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janet_buffer_push_u8(S->buffer, ' ');
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}
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}
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/* Color coding for types */
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static const char janet_cycle_color[] = "\x1B[36m";
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static const char janet_class_color[] = "\x1B[34m";
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static const char *janet_pretty_colors[] = {
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"\x1B[32m",
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"\x1B[36m",
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"\x1B[36m",
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"\x1B[36m",
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"\x1B[35m",
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"\x1B[34m",
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"\x1B[33m",
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"\x1B[36m",
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"\x1B[36m",
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"\x1B[36m",
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"\x1B[36m"
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"\x1B[35m",
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"\x1B[36m",
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"\x1B[36m",
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"\x1B[36m",
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"\x1B[36m"
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};
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#define JANET_PRETTY_DICT_ONELINE 4
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#define JANET_PRETTY_IND_ONELINE 10
|
|
#define JANET_PRETTY_DICT_LIMIT 30
|
|
#define JANET_PRETTY_ARRAY_LIMIT 160
|
|
|
|
/* Helper for pretty printing */
|
|
static void janet_pretty_one(struct pretty *S, Janet x, int is_dict_value) {
|
|
/* Add to seen */
|
|
switch (janet_type(x)) {
|
|
case JANET_NIL:
|
|
case JANET_NUMBER:
|
|
case JANET_SYMBOL:
|
|
case JANET_BOOLEAN:
|
|
break;
|
|
default: {
|
|
Janet seenid = janet_table_get(&S->seen, x);
|
|
if (janet_checktype(seenid, JANET_NUMBER)) {
|
|
if (S->flags & JANET_PRETTY_COLOR) {
|
|
janet_buffer_push_cstring(S->buffer, janet_cycle_color);
|
|
}
|
|
janet_buffer_push_cstring(S->buffer, "<cycle ");
|
|
integer_to_string_b(S->buffer, janet_unwrap_integer(seenid));
|
|
janet_buffer_push_u8(S->buffer, '>');
|
|
if (S->flags & JANET_PRETTY_COLOR) {
|
|
janet_buffer_push_cstring(S->buffer, "\x1B[0m");
|
|
}
|
|
return;
|
|
} else {
|
|
janet_table_put(&S->seen, x, janet_wrap_integer(S->seen.count));
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
switch (janet_type(x)) {
|
|
default: {
|
|
const char *color = janet_pretty_colors[janet_type(x)];
|
|
if (color && (S->flags & JANET_PRETTY_COLOR)) {
|
|
janet_buffer_push_cstring(S->buffer, color);
|
|
}
|
|
if (janet_checktype(x, JANET_BUFFER) && janet_unwrap_buffer(x) == S->buffer) {
|
|
janet_buffer_ensure(S->buffer, S->buffer->count + S->bufstartlen * 4 + 3, 1);
|
|
janet_buffer_push_u8(S->buffer, '@');
|
|
janet_escape_string_impl(S->buffer, S->buffer->data, S->bufstartlen);
|
|
} else {
|
|
janet_description_b(S->buffer, x);
|
|
}
|
|
if (color && (S->flags & JANET_PRETTY_COLOR)) {
|
|
janet_buffer_push_cstring(S->buffer, "\x1B[0m");
|
|
}
|
|
break;
|
|
}
|
|
case JANET_ARRAY:
|
|
case JANET_TUPLE: {
|
|
int32_t i = 0, len = 0;
|
|
const Janet *arr = NULL;
|
|
int isarray = janet_checktype(x, JANET_ARRAY);
|
|
janet_indexed_view(x, &arr, &len);
|
|
int hasbrackets = !isarray && (janet_tuple_flag(arr) & JANET_TUPLE_FLAG_BRACKETCTOR);
|
|
const char *startstr = isarray ? "@[" : hasbrackets ? "[" : "(";
|
|
const char endchar = isarray ? ']' : hasbrackets ? ']' : ')';
|
|
janet_buffer_push_cstring(S->buffer, startstr);
|
|
S->depth--;
|
|
S->indent += 2;
|
|
if (S->depth == 0) {
|
|
janet_buffer_push_cstring(S->buffer, "...");
|
|
} else {
|
|
if (!isarray && !(S->flags & JANET_PRETTY_ONELINE) && len >= JANET_PRETTY_IND_ONELINE)
|
|
janet_buffer_push_u8(S->buffer, ' ');
|
|
if (is_dict_value && len >= JANET_PRETTY_IND_ONELINE) print_newline(S, 0);
|
|
if (len > JANET_PRETTY_ARRAY_LIMIT && !(S->flags & JANET_PRETTY_NOTRUNC)) {
|
|
for (i = 0; i < 3; i++) {
|
|
if (i) print_newline(S, 0);
|
|
janet_pretty_one(S, arr[i], 0);
|
|
}
|
|
print_newline(S, 0);
|
|
janet_buffer_push_cstring(S->buffer, "...");
|
|
for (i = 0; i < 3; i++) {
|
|
print_newline(S, 0);
|
|
janet_pretty_one(S, arr[len - 3 + i], 0);
|
|
}
|
|
} else {
|
|
for (i = 0; i < len; i++) {
|
|
if (i) print_newline(S, len < JANET_PRETTY_IND_ONELINE);
|
|
janet_pretty_one(S, arr[i], 0);
|
|
}
|
|
}
|
|
}
|
|
S->indent -= 2;
|
|
S->depth++;
|
|
janet_buffer_push_u8(S->buffer, endchar);
|
|
break;
|
|
}
|
|
case JANET_STRUCT:
|
|
case JANET_TABLE: {
|
|
int istable = janet_checktype(x, JANET_TABLE);
|
|
janet_buffer_push_cstring(S->buffer, istable ? "@" : "{");
|
|
|
|
/* For object-like tables, print class name */
|
|
if (istable) {
|
|
JanetTable *t = janet_unwrap_table(x);
|
|
JanetTable *proto = t->proto;
|
|
if (NULL != proto) {
|
|
Janet name = janet_table_get(proto, janet_ckeywordv("name"));
|
|
const uint8_t *n;
|
|
int32_t len;
|
|
if (janet_bytes_view(name, &n, &len)) {
|
|
if (S->flags & JANET_PRETTY_COLOR) {
|
|
janet_buffer_push_cstring(S->buffer, janet_class_color);
|
|
}
|
|
janet_buffer_push_bytes(S->buffer, n, len);
|
|
if (S->flags & JANET_PRETTY_COLOR) {
|
|
janet_buffer_push_cstring(S->buffer, "\x1B[0m");
|
|
}
|
|
}
|
|
}
|
|
janet_buffer_push_cstring(S->buffer, "{");
|
|
}
|
|
|
|
S->depth--;
|
|
S->indent += 2;
|
|
if (S->depth == 0) {
|
|
janet_buffer_push_cstring(S->buffer, "...");
|
|
} else {
|
|
int32_t i = 0, len = 0, cap = 0;
|
|
int first_kv_pair = 1;
|
|
const JanetKV *kvs = NULL;
|
|
int counter = 0;
|
|
janet_dictionary_view(x, &kvs, &len, &cap);
|
|
if (!istable && !(S->flags & JANET_PRETTY_ONELINE) && len >= JANET_PRETTY_DICT_ONELINE)
|
|
janet_buffer_push_u8(S->buffer, ' ');
|
|
if (is_dict_value && len >= JANET_PRETTY_DICT_ONELINE) print_newline(S, 0);
|
|
for (i = 0; i < cap; i++) {
|
|
if (!janet_checktype(kvs[i].key, JANET_NIL)) {
|
|
if (counter == JANET_PRETTY_DICT_LIMIT && !(S->flags & JANET_PRETTY_NOTRUNC)) {
|
|
print_newline(S, 0);
|
|
janet_buffer_push_cstring(S->buffer, "...");
|
|
break;
|
|
}
|
|
if (first_kv_pair) {
|
|
first_kv_pair = 0;
|
|
} else {
|
|
print_newline(S, len < JANET_PRETTY_DICT_ONELINE);
|
|
}
|
|
janet_pretty_one(S, kvs[i].key, 0);
|
|
janet_buffer_push_u8(S->buffer, ' ');
|
|
janet_pretty_one(S, kvs[i].value, 1);
|
|
counter++;
|
|
}
|
|
}
|
|
}
|
|
S->indent -= 2;
|
|
S->depth++;
|
|
janet_buffer_push_u8(S->buffer, '}');
|
|
break;
|
|
}
|
|
}
|
|
/* Remove from seen */
|
|
janet_table_remove(&S->seen, x);
|
|
return;
|
|
}
|
|
|
|
static JanetBuffer *janet_pretty_(JanetBuffer *buffer, int depth, int flags, Janet x, int32_t startlen) {
|
|
struct pretty S;
|
|
if (NULL == buffer) {
|
|
buffer = janet_buffer(0);
|
|
}
|
|
S.buffer = buffer;
|
|
S.depth = depth;
|
|
S.indent = 0;
|
|
S.flags = flags;
|
|
S.bufstartlen = startlen;
|
|
janet_table_init(&S.seen, 10);
|
|
janet_pretty_one(&S, x, 0);
|
|
janet_table_deinit(&S.seen);
|
|
return S.buffer;
|
|
}
|
|
|
|
/* Helper for printing a janet value in a pretty form. Not meant to be used
|
|
* for serialization or anything like that. */
|
|
JanetBuffer *janet_pretty(JanetBuffer *buffer, int depth, int flags, Janet x) {
|
|
return janet_pretty_(buffer, depth, flags, x, buffer ? buffer->count : 0);
|
|
}
|
|
|
|
static JanetBuffer *janet_jdn_(JanetBuffer *buffer, int depth, Janet x, int32_t startlen) {
|
|
struct pretty S;
|
|
if (NULL == buffer) {
|
|
buffer = janet_buffer(0);
|
|
}
|
|
S.buffer = buffer;
|
|
S.depth = depth;
|
|
S.indent = 0;
|
|
S.flags = 0;
|
|
S.bufstartlen = startlen;
|
|
janet_table_init(&S.seen, 10);
|
|
int res = print_jdn_one(&S, x, depth);
|
|
janet_table_deinit(&S.seen);
|
|
if (res) {
|
|
janet_panic("could not print to jdn format");
|
|
}
|
|
return S.buffer;
|
|
}
|
|
|
|
JanetBuffer *janet_jdn(JanetBuffer *buffer, int depth, Janet x) {
|
|
return janet_jdn_(buffer, depth, x, buffer ? buffer->count : 0);
|
|
}
|
|
|
|
static const char *typestr(Janet x) {
|
|
JanetType t = janet_type(x);
|
|
return (t == JANET_ABSTRACT)
|
|
? janet_abstract_type(janet_unwrap_abstract(x))->name
|
|
: janet_type_names[t];
|
|
}
|
|
|
|
static void pushtypes(JanetBuffer *buffer, int types) {
|
|
int first = 1;
|
|
int i = 0;
|
|
while (types) {
|
|
if (1 & types) {
|
|
if (first) {
|
|
first = 0;
|
|
} else {
|
|
janet_buffer_push_u8(buffer, '|');
|
|
}
|
|
janet_buffer_push_cstring(buffer, janet_type_names[i]);
|
|
}
|
|
i++;
|
|
types >>= 1;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* code adapted from lua/lstrlib.c http://lua.org
|
|
*/
|
|
|
|
#define MAX_ITEM 256
|
|
#define FMT_FLAGS "-+ #0"
|
|
#define MAX_FORMAT 32
|
|
|
|
static const char *scanformat(
|
|
const char *strfrmt,
|
|
char *form,
|
|
char width[3],
|
|
char precision[3]) {
|
|
const char *p = strfrmt;
|
|
memset(width, '\0', 3);
|
|
memset(precision, '\0', 3);
|
|
while (*p != '\0' && strchr(FMT_FLAGS, *p) != NULL)
|
|
p++; /* skip flags */
|
|
if ((size_t)(p - strfrmt) >= sizeof(FMT_FLAGS) / sizeof(char))
|
|
janet_panic("invalid format (repeated flags)");
|
|
if (isdigit((int)(*p)))
|
|
width[0] = *p++; /* skip width */
|
|
if (isdigit((int)(*p)))
|
|
width[1] = *p++; /* (2 digits at most) */
|
|
if (*p == '.') {
|
|
p++;
|
|
if (isdigit((int)(*p)))
|
|
precision[0] = *p++; /* skip precision */
|
|
if (isdigit((int)(*p)))
|
|
precision[1] = *p++; /* (2 digits at most) */
|
|
}
|
|
if (isdigit((int)(*p)))
|
|
janet_panic("invalid format (width or precision too long)");
|
|
*(form++) = '%';
|
|
memcpy(form, strfrmt, ((p - strfrmt) + 1) * sizeof(char));
|
|
form += (p - strfrmt) + 1;
|
|
*form = '\0';
|
|
return p;
|
|
}
|
|
|
|
void janet_formatbv(JanetBuffer *b, const char *format, va_list args) {
|
|
const char *format_end = format + strlen(format);
|
|
const char *c = format;
|
|
int32_t startlen = b->count;
|
|
while (c < format_end) {
|
|
if (*c != '%') {
|
|
janet_buffer_push_u8(b, (uint8_t) *c++);
|
|
} else if (*++c == '%') {
|
|
janet_buffer_push_u8(b, (uint8_t) *c++);
|
|
} else {
|
|
char form[MAX_FORMAT], item[MAX_ITEM];
|
|
char width[3], precision[3];
|
|
int nb = 0; /* number of bytes in added item */
|
|
c = scanformat(c, form, width, precision);
|
|
switch (*c++) {
|
|
case 'c': {
|
|
int n = va_arg(args, long);
|
|
nb = snprintf(item, MAX_ITEM, form, n);
|
|
break;
|
|
}
|
|
case 'd':
|
|
case 'i':
|
|
case 'o':
|
|
case 'x':
|
|
case 'X': {
|
|
int32_t n = va_arg(args, long);
|
|
nb = snprintf(item, MAX_ITEM, form, n);
|
|
break;
|
|
}
|
|
case 'a':
|
|
case 'A':
|
|
case 'e':
|
|
case 'E':
|
|
case 'f':
|
|
case 'g':
|
|
case 'G': {
|
|
double d = va_arg(args, double);
|
|
nb = snprintf(item, MAX_ITEM, form, d);
|
|
break;
|
|
}
|
|
case 's':
|
|
case 'S': {
|
|
const char *str = va_arg(args, const char *);
|
|
int32_t len = c[-1] == 's'
|
|
? (int32_t) strlen(str)
|
|
: janet_string_length((JanetString) str);
|
|
if (form[2] == '\0')
|
|
janet_buffer_push_bytes(b, (const uint8_t *) str, len);
|
|
else {
|
|
if (len != (int32_t) strlen((const char *) str))
|
|
janet_panic("string contains zeros");
|
|
if (!strchr(form, '.') && len >= 100) {
|
|
janet_panic("no precision and string is too long to be formatted");
|
|
} else {
|
|
nb = snprintf(item, MAX_ITEM, form, str);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case 'V':
|
|
janet_to_string_b(b, va_arg(args, Janet));
|
|
break;
|
|
case 'v':
|
|
janet_description_b(b, va_arg(args, Janet));
|
|
break;
|
|
case 't':
|
|
janet_buffer_push_cstring(b, typestr(va_arg(args, Janet)));
|
|
break;
|
|
case 'T': {
|
|
int types = va_arg(args, long);
|
|
pushtypes(b, types);
|
|
break;
|
|
}
|
|
case 'M':
|
|
case 'm':
|
|
case 'N':
|
|
case 'n':
|
|
case 'Q':
|
|
case 'q':
|
|
case 'P':
|
|
case 'p': { /* janet pretty , precision = depth */
|
|
int depth = atoi(precision);
|
|
if (depth < 1) depth = 4;
|
|
char d = c[-1];
|
|
int has_color = (d == 'P') || (d == 'Q') || (d == 'M') || (d == 'N');
|
|
int has_oneline = (d == 'Q') || (d == 'q') || (d == 'N') || (d == 'n');
|
|
int has_notrunc = (d == 'M') || (d == 'm') || (d == 'N') || (d == 'n');
|
|
int flags = 0;
|
|
flags |= has_color ? JANET_PRETTY_COLOR : 0;
|
|
flags |= has_oneline ? JANET_PRETTY_ONELINE : 0;
|
|
flags |= has_notrunc ? JANET_PRETTY_NOTRUNC : 0;
|
|
janet_pretty_(b, depth, flags, va_arg(args, Janet), startlen);
|
|
break;
|
|
}
|
|
case 'j': {
|
|
int depth = atoi(precision);
|
|
if (depth < 1)
|
|
depth = JANET_RECURSION_GUARD;
|
|
janet_jdn_(b, depth, va_arg(args, Janet), startlen);
|
|
break;
|
|
}
|
|
default: {
|
|
/* also treat cases 'nLlh' */
|
|
janet_panicf("invalid conversion '%s' to 'format'",
|
|
form);
|
|
}
|
|
}
|
|
if (nb >= MAX_ITEM)
|
|
janet_panicf("format buffer overflow", form);
|
|
if (nb > 0)
|
|
janet_buffer_push_bytes(b, (uint8_t *) item, nb);
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
/* Helper function for formatting strings. Useful for generating error messages and the like.
|
|
* Similar to printf, but specialized for operating with janet. */
|
|
const uint8_t *janet_formatc(const char *format, ...) {
|
|
va_list args;
|
|
const uint8_t *ret;
|
|
JanetBuffer buffer;
|
|
int32_t len = 0;
|
|
|
|
/* Calculate length, init buffer and args */
|
|
while (format[len]) len++;
|
|
janet_buffer_init(&buffer, len);
|
|
va_start(args, format);
|
|
|
|
/* Run format */
|
|
janet_formatbv(&buffer, format, args);
|
|
|
|
/* Iterate length */
|
|
va_end(args);
|
|
|
|
ret = janet_string(buffer.data, buffer.count);
|
|
janet_buffer_deinit(&buffer);
|
|
return ret;
|
|
}
|
|
|
|
JanetBuffer *janet_formatb(JanetBuffer *buffer, const char *format, ...) {
|
|
va_list args;
|
|
va_start(args, format);
|
|
janet_formatbv(buffer, format, args);
|
|
va_end(args);
|
|
return buffer;
|
|
}
|
|
|
|
/* Shared implementation between string/format and
|
|
* buffer/format */
|
|
void janet_buffer_format(
|
|
JanetBuffer *b,
|
|
const char *strfrmt,
|
|
int32_t argstart,
|
|
int32_t argc,
|
|
Janet *argv) {
|
|
size_t sfl = strlen(strfrmt);
|
|
const char *strfrmt_end = strfrmt + sfl;
|
|
int32_t arg = argstart;
|
|
int32_t startlen = b->count;
|
|
while (strfrmt < strfrmt_end) {
|
|
if (*strfrmt != '%')
|
|
janet_buffer_push_u8(b, (uint8_t) * strfrmt++);
|
|
else if (*++strfrmt == '%')
|
|
janet_buffer_push_u8(b, (uint8_t) * strfrmt++); /* %% */
|
|
else { /* format item */
|
|
char form[MAX_FORMAT], item[MAX_ITEM];
|
|
char width[3], precision[3];
|
|
int nb = 0; /* number of bytes in added item */
|
|
if (++arg >= argc)
|
|
janet_panic("not enough values for format");
|
|
strfrmt = scanformat(strfrmt, form, width, precision);
|
|
switch (*strfrmt++) {
|
|
case 'c': {
|
|
nb = snprintf(item, MAX_ITEM, form, (int)
|
|
janet_getinteger(argv, arg));
|
|
break;
|
|
}
|
|
case 'd':
|
|
case 'i':
|
|
case 'o':
|
|
case 'x':
|
|
case 'X': {
|
|
int32_t n = janet_getinteger(argv, arg);
|
|
nb = snprintf(item, MAX_ITEM, form, n);
|
|
break;
|
|
}
|
|
case 'a':
|
|
case 'A':
|
|
case 'e':
|
|
case 'E':
|
|
case 'f':
|
|
case 'g':
|
|
case 'G': {
|
|
double d = janet_getnumber(argv, arg);
|
|
nb = snprintf(item, MAX_ITEM, form, d);
|
|
break;
|
|
}
|
|
case 's': {
|
|
const uint8_t *s = janet_getstring(argv, arg);
|
|
int32_t l = janet_string_length(s);
|
|
if (form[2] == '\0')
|
|
janet_buffer_push_bytes(b, s, l);
|
|
else {
|
|
if (l != (int32_t) strlen((const char *) s))
|
|
janet_panic("string contains zeros");
|
|
if (!strchr(form, '.') && l >= 100) {
|
|
janet_panic("no precision and string is too long to be formatted");
|
|
} else {
|
|
nb = snprintf(item, MAX_ITEM, form, s);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case 'V': {
|
|
janet_to_string_b(b, argv[arg]);
|
|
break;
|
|
}
|
|
case 'v': {
|
|
janet_description_b(b, argv[arg]);
|
|
break;
|
|
}
|
|
case 't':
|
|
janet_buffer_push_cstring(b, typestr(argv[arg]));
|
|
break;
|
|
case 'M':
|
|
case 'm':
|
|
case 'N':
|
|
case 'n':
|
|
case 'Q':
|
|
case 'q':
|
|
case 'P':
|
|
case 'p': { /* janet pretty , precision = depth */
|
|
int depth = atoi(precision);
|
|
if (depth < 1) depth = 4;
|
|
char d = strfrmt[-1];
|
|
int has_color = (d == 'P') || (d == 'Q') || (d == 'M') || (d == 'N');
|
|
int has_oneline = (d == 'Q') || (d == 'q') || (d == 'N') || (d == 'n');
|
|
int has_notrunc = (d == 'M') || (d == 'm') || (d == 'N') || (d == 'n');
|
|
int flags = 0;
|
|
flags |= has_color ? JANET_PRETTY_COLOR : 0;
|
|
flags |= has_oneline ? JANET_PRETTY_ONELINE : 0;
|
|
flags |= has_notrunc ? JANET_PRETTY_NOTRUNC : 0;
|
|
janet_pretty_(b, depth, flags, argv[arg], startlen);
|
|
break;
|
|
}
|
|
case 'j': {
|
|
int depth = atoi(precision);
|
|
if (depth < 1)
|
|
depth = JANET_RECURSION_GUARD;
|
|
janet_jdn_(b, depth, argv[arg], startlen);
|
|
break;
|
|
}
|
|
default: {
|
|
/* also treat cases 'nLlh' */
|
|
janet_panicf("invalid conversion '%s' to 'format'",
|
|
form);
|
|
}
|
|
}
|
|
if (nb >= MAX_ITEM)
|
|
janet_panicf("format buffer overflow", form);
|
|
if (nb > 0)
|
|
janet_buffer_push_bytes(b, (uint8_t *) item, nb);
|
|
}
|
|
}
|
|
}
|
|
|
|
#undef HEX
|
|
#undef BUFSIZE
|