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ESP32forth.ino
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ESP32forth.ino
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/*
* Copyright 2021 Bradley D. Nelson
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* ESP32forth v7.0.6.6
* Revision: ea1684e75d6b88d7ed1bbd2dfb5121c7b47dd782
*/
// Uncomment this #define for stand alone termminal mode using the
// FabGL (http://www.fabglib.org/) library
// You will need to install FabGL from the Library Manager:
#define ENABLE_FABGL_SUPPORT
#ifdef ENABLE_FABGL_SUPPORT
#include "fabgl.h"
fabgl::VGATextController DisplayController;
fabgl::PS2Controller PS2Controller;
fabgl::Terminal Terminal;
#endif
#include <inttypes.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
typedef intptr_t cell_t;
typedef uintptr_t ucell_t;
#define Y(op, code) X(#op, id ## op, code)
#define NIP (--sp)
#define NIPn(n) (sp -= (n))
#define DROP (tos = *sp--)
#define DROPn(n) (NIPn(n-1), DROP)
#define DUP (*++sp = tos)
#define PUSH DUP; tos = (cell_t)
#define COMMA(n) *g_sys.heap++ = (n)
#define DOIMMEDIATE() (*g_sys.current)[-1] |= IMMEDIATE
#define UNSMUDGE() (*g_sys.current)[-1] &= ~SMUDGE
#define DOES(ip) **g_sys.current = (cell_t) ADDR_DODOES; (*g_sys.current)[1] = (cell_t) ip
#define PARK DUP; *++rp = (cell_t) sp; *++rp = (cell_t) ip
#ifndef SSMOD_FUNC
# if __SIZEOF_POINTER__ == 8
typedef __int128_t dcell_t;
# elif __SIZEOF_POINTER__ == 4 || defined(_M_IX86)
typedef int64_t dcell_t;
# else
# error "unsupported cell size"
# endif
# define SSMOD_FUNC dcell_t d = (dcell_t) *sp * (dcell_t) sp[-1]; \
--sp; cell_t a = (cell_t) (d < 0 ? ~(~d / tos) : d / tos); \
*sp = (cell_t) (d - ((dcell_t) a) * tos); tos = a
#endif
#define OPCODE_LIST \
X("0=", ZEQUAL, tos = !tos ? -1 : 0) \
X("0<", ZLESS, tos = (tos|0) < 0 ? -1 : 0) \
X("+", PLUS, tos += *sp--) \
X("U/MOD", USMOD, w = *sp; *sp = (ucell_t) w % (ucell_t) tos; \
tos = (ucell_t) w / (ucell_t) tos) \
X("*/MOD", SSMOD, SSMOD_FUNC) \
Y(LSHIFT, tos = (*sp-- << tos)) \
Y(RSHIFT, tos = (*sp-- >> tos)) \
Y(AND, tos &= *sp--) \
Y(OR, tos |= *sp--) \
Y(XOR, tos ^= *sp--) \
Y(DUP, DUP) \
Y(SWAP, w = tos; tos = *sp; *sp = w) \
Y(OVER, DUP; tos = sp[-1]) \
Y(DROP, DROP) \
X("@", AT, tos = *(cell_t *) tos) \
X("L@", LAT, tos = *(int32_t *) tos) \
X("C@", CAT, tos = *(uint8_t *) tos) \
X("!", STORE, *(cell_t *) tos = *sp--; DROP) \
X("L!", LSTORE, *(int32_t *) tos = *sp--; DROP) \
X("C!", CSTORE, *(uint8_t *) tos = *sp--; DROP) \
X("SP@", SPAT, DUP; tos = (cell_t) sp) \
X("SP!", SPSTORE, sp = (cell_t *) tos; DROP) \
X("RP@", RPAT, DUP; tos = (cell_t) rp) \
X("RP!", RPSTORE, rp = (cell_t *) tos; DROP) \
X(">R", TOR, *++rp = tos; DROP) \
X("R>", FROMR, DUP; tos = *rp; --rp) \
X("R@", RAT, DUP; tos = *rp) \
Y(EXECUTE, w = tos; DROP; JMPW) \
Y(BRANCH, ip = (cell_t *) *ip) \
Y(0BRANCH, if (!tos) ip = (cell_t *) *ip; else ++ip; DROP) \
Y(DONEXT, *rp = *rp - 1; if (~*rp) ip = (cell_t *) *ip; else (--rp, ++ip)) \
Y(DOLIT, DUP; tos = *ip++) \
Y(ALITERAL, COMMA(g_sys.DOLIT_XT); COMMA(tos); DROP) \
Y(CELL, DUP; tos = sizeof(cell_t)) \
Y(FIND, tos = find((const char *) *sp, tos); --sp) \
Y(PARSE, DUP; tos = parse(tos, sp)) \
X("S>NUMBER?", CONVERT, tos = convert((const char *) *sp, tos, g_sys.base, sp); \
if (!tos) --sp) \
X("F>NUMBER?", FCONVERT, tos = fconvert((const char *) *sp, tos, fp); --sp) \
Y(CREATE, DUP; DUP; tos = parse(32, sp); \
create((const char *) *sp, tos, 0, ADDR_DOCREATE); \
COMMA(0); DROPn(2)) \
X("DOES>", DOES, DOES(ip); ip = (cell_t *) *rp; --rp) \
Y(IMMEDIATE, DOIMMEDIATE()) \
X("'SYS", SYS, DUP; tos = (cell_t) &g_sys) \
Y(YIELD, PARK; return rp) \
X(":", COLON, DUP; DUP; tos = parse(32, sp); \
create((const char *) *sp, tos, SMUDGE, ADDR_DOCOLON); \
g_sys.state = -1; --sp; DROP) \
Y(EVALUATE1, DUP; float *tfp = fp; \
sp = evaluate1(sp, &tfp); \
fp = tfp; w = *sp--; DROP; if (w) JMPW) \
Y(EXIT, ip = (cell_t *) *rp--) \
X(";", SEMICOLON, UNSMUDGE(); COMMA(g_sys.DOEXIT_XT); g_sys.state = 0) \
#define FLOATING_POINT_LIST \
Y(DOFLIT, *++fp = *(float *) ip++) \
X("FP@", FPAT, DUP; tos = (cell_t) fp) \
X("FP!", FPSTORE, fp = (float *) tos; DROP) \
X("SF@", FAT, *++fp = *(float *) tos; DROP) \
X("SF!", FSTORE, *(float *) tos = *fp--; DROP) \
X("FDUP", FDUP, fp[1] = *fp; ++fp) \
X("FNIP", FNIP, fp[-1] = *fp; --fp) \
X("FDROP", FDROP, --fp) \
X("FOVER", FOVER, fp[1] = fp[-1]; ++fp) \
X("FSWAP", FSWAP, float ft = fp[-1]; fp[-1] = *fp; *fp = ft) \
X("FNEGATE", FNEGATE, *fp = -*fp) \
X("F0<", FZLESS, DUP; tos = *fp-- < 0.0f ? -1 : 0) \
X("F0=", FZEQUAL, DUP; tos = *fp-- == 0.0f ? -1 : 0) \
X("F+", FPLUS, fp[-1] += *fp; --fp) \
X("F-", FMINUS, fp[-1] -= *fp; --fp) \
X("F*", FSTAR, fp[-1] *= *fp; --fp) \
X("F/", FSLASH, fp[-1] /= *fp; --fp) \
X("1/F", FINVERSE, *fp = 1.0 / *fp) \
X("S>F", STOF, *++fp = (float) tos; DROP) \
X("F>S", FTOS, DUP; tos = (cell_t) *fp--) \
#define SET tos = (cell_t)
#define n0 tos
#define n1 (*sp)
#define n2 sp[-1]
#define n3 sp[-2]
#define n4 sp[-3]
#define n5 sp[-4]
#define n6 sp[-5]
#define n7 sp[-6]
#define n8 sp[-7]
#define n9 sp[-8]
#define n10 sp[-9]
#define a0 ((void *) tos)
#define a1 (*(void **) &n1)
#define a2 (*(void **) &n2)
#define a3 (*(void **) &n3)
#define a4 (*(void **) &n4)
#define a5 (*(void **) &n5)
#define a6 (*(void **) &n6)
#define b0 ((uint8_t *) tos)
#define b1 (*(uint8_t **) &n1)
#define b2 (*(uint8_t **) &n2)
#define b3 (*(uint8_t **) &n3)
#define b4 (*(uint8_t **) &n4)
#define b5 (*(uint8_t **) &n5)
#define b6 (*(uint8_t **) &n6)
#define c0 ((char *) tos)
#define c1 (*(char **) &n1)
#define c2 (*(char **) &n2)
#define c3 (*(char **) &n3)
#define c4 (*(char **) &n4)
#define c5 (*(char **) &n5)
#define c6 (*(char **) &n6)
// For now, default on several options.
#define ENABLE_SPIFFS_SUPPORT
#define ENABLE_WIFI_SUPPORT
#define ENABLE_MDNS_SUPPORT
#define ENABLE_WEBSERVER_SUPPORT
#define ENABLE_I2C_SUPPORT
#define ENABLE_SOCKETS_SUPPORT
#define ENABLE_FREERTOS_SUPPORT
#define ENABLE_INTERRUPTS_SUPPORT
// SD_MMC does not work on ESP32-S2 / ESP32-C3
#if !defined(CONFIG_IDF_TARGET_ESP32S2) && !defined(CONFIG_IDF_TARGET_ESP32C3)
# define ENABLE_SDCARD_SUPPORT
#endif
// ESP32-C3 has no DACs.
#if !defined(CONFIG_IDF_TARGET_ESP32C3)
# define ENABLE_DAC_SUPPORT
#endif
// Uncomment this #define for OLED Support.
// You will need to install these libraries from the Library Manager:
// Adafruit SSD1306
// Adafruit GFX Library
// Adafruit BusIO
//#define ENABLE_OLED_SUPPORT
// For now assume only boards with PSRAM (ESP32-CAM)
// will want SerialBluetooth (very large) and camera support.
// Other boards can support these if they're set to a larger
// parition size. But it's unclear the best way to configure this.
#ifdef BOARD_HAS_PSRAM
# define ENABLE_CAMERA_SUPPORT
# define ENABLE_SERIAL_BLUETOOTH_SUPPORT
#endif
#ifdef ENABLE_WEBSERVER_SUPPORT
# include "WebServer.h"
#endif
#include <errno.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/select.h>
#if defined(ESP32)
# define HEAP_SIZE (100 * 1024)
# define STACK_SIZE 512
#elif defined(ESP8266)
# define HEAP_SIZE (40 * 1024)
# define STACK_SIZE 512
#else
# define HEAP_SIZE 2 * 1024
# define STACK_SIZE 32
#endif
#define INTERRUPT_STACK_CELLS 64
// Optional hook to pull in words for userwords.h
#if __has_include("userwords.h")
# include "userwords.h"
#else
# define USER_WORDS
#endif
#define PLATFORM_OPCODE_LIST \
FLOATING_POINT_LIST \
/* Memory Allocation */ \
Y(MALLOC, SET malloc(n0)) \
Y(SYSFREE, free(a0); DROP) \
Y(REALLOC, SET realloc(a1, n0); NIP) \
Y(heap_caps_malloc, SET heap_caps_malloc(n1, n0); NIP) \
Y(heap_caps_free, heap_caps_free(a0); DROP) \
Y(heap_caps_realloc, \
tos = (cell_t) heap_caps_realloc(a2, n1, n0); NIPn(2)) \
/* Serial */ \
X("Serial.begin", SERIAL_BEGIN, Serial.begin(tos); DROP) \
X("Serial.end", SERIAL_END, Serial.end()) \
X("Serial.available", SERIAL_AVAILABLE, PUSH Serial.available()) \
X("Serial.readBytes", SERIAL_READ_BYTES, n0 = Serial.readBytes(b1, n0); NIP) \
X("Serial.write", SERIAL_WRITE, n0 = Serial.write(b1, n0); NIP) \
X("Serial.flush", SERIAL_FLUSH, Serial.flush()) \
/* Pins and PWM */ \
Y(pinMode, pinMode(n1, n0); DROPn(2)) \
Y(digitalWrite, digitalWrite(n1, n0); DROPn(2)) \
Y(digitalRead, n0 = digitalRead(n0)) \
Y(analogRead, n0 = analogRead(n0)) \
Y(pulseIn, n0 = pulseIn(n2, n1, n0); NIPn(2)) \
Y(ledcSetup, \
n0 = (cell_t) (1000000 * ledcSetup(n2, n1 / 1000.0, n0)); NIPn(2)) \
Y(ledcAttachPin, ledcAttachPin(n1, n0); DROPn(2)) \
Y(ledcDetachPin, ledcDetachPin(n0); DROP) \
Y(ledcRead, n0 = ledcRead(n0)) \
Y(ledcReadFreq, n0 = (cell_t) (1000000 * ledcReadFreq(n0))) \
Y(ledcWrite, ledcWrite(n1, n0); DROPn(2)) \
Y(ledcWriteTone, \
n0 = (cell_t) (1000000 * ledcWriteTone(n1, n0 / 1000.0)); NIP) \
Y(ledcWriteNote, \
tos = (cell_t) (1000000 * ledcWriteNote(n2, (note_t) n1, n0)); NIPn(2)) \
/* General System */ \
X("MS-TICKS", MS_TICKS, PUSH millis()) \
X("RAW-YIELD", RAW_YIELD, yield()) \
Y(TERMINATE, exit(n0)) \
/* File words */ \
X("R/O", R_O, PUSH O_RDONLY) \
X("R/W", R_W, PUSH O_RDWR) \
X("W/O", W_O, PUSH O_WRONLY) \
Y(BIN, ) \
X("CLOSE-FILE", CLOSE_FILE, tos = close(tos); tos = tos ? errno : 0) \
X("FLUSH-FILE", FLUSH_FILE, fsync(tos); /* fsync has no impl and returns ENOSYS :-( */ tos = 0) \
X("OPEN-FILE", OPEN_FILE, cell_t mode = n0; DROP; cell_t len = n0; DROP; \
memcpy(filename, a0, len); filename[len] = 0; \
n0 = open(filename, mode, 0777); PUSH n0 < 0 ? errno : 0) \
X("CREATE-FILE", CREATE_FILE, cell_t mode = n0; DROP; cell_t len = n0; DROP; \
memcpy(filename, a0, len); filename[len] = 0; \
n0 = open(filename, mode | O_CREAT | O_TRUNC); PUSH n0 < 0 ? errno : 0) \
X("DELETE-FILE", DELETE_FILE, cell_t len = n0; DROP; \
memcpy(filename, a0, len); filename[len] = 0; \
n0 = unlink(filename); n0 = n0 ? errno : 0) \
X("WRITE-FILE", WRITE_FILE, cell_t fd = n0; DROP; cell_t len = n0; DROP; \
n0 = write(fd, a0, len); n0 = n0 != len ? errno : 0) \
X("READ-FILE", READ_FILE, cell_t fd = n0; DROP; cell_t len = n0; DROP; \
n0 = read(fd, a0, len); PUSH n0 < 0 ? errno : 0) \
X("FILE-POSITION", FILE_POSITION, \
n0 = (cell_t) lseek(n0, 0, SEEK_CUR); PUSH n0 < 0 ? errno : 0) \
X("REPOSITION-FILE", REPOSITION_FILE, cell_t fd = n0; DROP; \
n0 = (cell_t) lseek(fd, tos, SEEK_SET); n0 = n0 < 0 ? errno : 0) \
X("RESIZE-FILE", RESIZE_FILE, cell_t fd = n0; DROP; n0 = ResizeFile(fd, tos)) \
X("FILE-SIZE", FILE_SIZE, struct stat st; w = fstat(n0, &st); \
n0 = (cell_t) st.st_size; PUSH w < 0 ? errno : 0) \
OPTIONAL_DAC_SUPPORT \
OPTIONAL_SPIFFS_SUPPORT \
OPTIONAL_WIFI_SUPPORT \
OPTIONAL_MDNS_SUPPORT \
OPTIONAL_WEBSERVER_SUPPORT \
OPTIONAL_SDCARD_SUPPORT \
OPTIONAL_I2C_SUPPORT \
OPTIONAL_SERIAL_BLUETOOTH_SUPPORT \
OPTIONAL_CAMERA_SUPPORT \
OPTIONAL_SOCKETS_SUPPORT \
OPTIONAL_FREERTOS_SUPPORT \
OPTIONAL_INTERRUPTS_SUPPORT \
OPTIONAL_OLED_SUPPORT \
OPTIONAL_FABGL_SUPPORT \
USER_WORDS
#ifndef ENABLE_DAC_SUPPORT
# define OPTIONAL_DAC_SUPPORT
# else
# define OPTIONAL_DAC_SUPPORT \
Y(dacWrite, dacWrite(n1, n0); DROPn(2))
#endif
#ifndef ENABLE_SPIFFS_SUPPORT
// Provide a default failing SPIFFS.begin
# define OPTIONAL_SPIFFS_SUPPORT \
X("SPIFFS.begin", SPIFFS_BEGIN, NIPn(2); n0 = 0)
#else
# include "SPIFFS.h"
# define OPTIONAL_SPIFFS_SUPPORT \
X("SPIFFS.begin", SPIFFS_BEGIN, \
tos = SPIFFS.begin(n2, c1, n0); NIPn(2)) \
X("SPIFFS.end", SPIFFS_END, SPIFFS.end()) \
X("SPIFFS.format", SPIFFS_FORMAT, PUSH SPIFFS.format()) \
X("SPIFFS.totalBytes", SPIFFS_TOTAL_BYTES, PUSH SPIFFS.totalBytes()) \
X("SPIFFS.usedBytes", SPIFFS_USED_BYTES, PUSH SPIFFS.usedBytes())
#endif
#ifndef ENABLE_FREERTOS_SUPPORT
# define OPTIONAL_FREERTOS_SUPPORT
#else
# include "freertos/FreeRTOS.h"
# include "freertos/task.h"
# define OPTIONAL_FREERTOS_SUPPORT \
Y(vTaskDelete, vTaskDelete((TaskHandle_t) n0); DROP) \
Y(xTaskCreatePinnedToCore, n0 = xTaskCreatePinnedToCore((TaskFunction_t) a6, c5, n4, a3, (UBaseType_t) n2, (TaskHandle_t *) a1, (BaseType_t) n0); NIPn(6)) \
Y(xPortGetCoreID, PUSH xPortGetCoreID())
#endif
#ifndef ENABLE_FABGL_SUPPORT
# define OPTIONAL_FABGL_SUPPORT
#else
# define OPTIONAL_FABGL_SUPPORT \
/* FabGL Terminal */ \
X("Terminal.write", TERMINAL_WRITE, n0 = Terminal.write(b1, n0); NIP) \
X("Terminal.clear", TERMINAL_CLEAR, Terminal.clear()) \
X("Terminal.read", TERMINAL_READ, PUSH Terminal.read()) \
X("Terminal.available", TERMINAL_AVAILABLE, PUSH Terminal.available())
#endif
#ifndef ENABLE_INTERRUPTS_SUPPORT
# define OPTIONAL_INTERRUPTS_SUPPORT
#else
# include "esp_intr_alloc.h"
# include "driver/timer.h"
# include "driver/gpio.h"
# define OPTIONAL_INTERRUPTS_SUPPORT \
Y(gpio_config, n0 = gpio_config((const gpio_config_t *) a0)) \
Y(gpio_reset_pin, n0 = gpio_reset_pin((gpio_num_t) n0)) \
Y(gpio_set_intr_type, n0 = gpio_set_intr_type((gpio_num_t) n1, (gpio_int_type_t) n0); NIP) \
Y(gpio_intr_enable, n0 = gpio_intr_enable((gpio_num_t) n0)) \
Y(gpio_intr_disable, n0 = gpio_intr_disable((gpio_num_t) n0)) \
Y(gpio_set_level, n0 = gpio_set_level((gpio_num_t) n1, n0); NIP) \
Y(gpio_get_level, n0 = gpio_get_level((gpio_num_t) n0)) \
Y(gpio_set_direction, n0 = gpio_set_direction((gpio_num_t) n1, (gpio_mode_t) n0); NIP) \
Y(gpio_set_pull_mode, n0 = gpio_set_pull_mode((gpio_num_t) n1, (gpio_pull_mode_t) n0); NIP) \
Y(gpio_wakeup_enable, n0 = gpio_wakeup_enable((gpio_num_t) n1, (gpio_int_type_t) n0); NIP) \
Y(gpio_wakeup_disable, n0 = gpio_wakeup_disable((gpio_num_t) n0)) \
Y(gpio_pullup_en, n0 = gpio_pullup_en((gpio_num_t) n0)) \
Y(gpio_pullup_dis, n0 = gpio_pullup_dis((gpio_num_t) n0)) \
Y(gpio_pulldown_en, n0 = gpio_pulldown_en((gpio_num_t) n0)) \
Y(gpio_pulldown_dis, n0 = gpio_pulldown_dis((gpio_num_t) n0)) \
Y(gpio_hold_en, n0 = gpio_hold_en((gpio_num_t) n0)) \
Y(gpio_hold_dis, n0 = gpio_hold_dis((gpio_num_t) n0)) \
Y(gpio_deep_sleep_hold_en, gpio_deep_sleep_hold_en()) \
Y(gpio_deep_sleep_hold_dis, gpio_deep_sleep_hold_dis()) \
Y(gpio_install_isr_service, n0 = gpio_install_isr_service(n0)) \
Y(gpio_uninstall_isr_service, gpio_uninstall_isr_service()) \
Y(gpio_isr_handler_add, n0 = GpioIsrHandlerAdd(n2, n1, n0); NIPn(2)) \
Y(gpio_isr_handler_remove, n0 = gpio_isr_handler_remove((gpio_num_t) n0)) \
Y(gpio_set_drive_capability, n0 = gpio_set_drive_capability((gpio_num_t) n1, (gpio_drive_cap_t) n0); NIP) \
Y(gpio_get_drive_capability, n0 = gpio_get_drive_capability((gpio_num_t) n1, (gpio_drive_cap_t *) a0); NIP) \
Y(esp_intr_alloc, n0 = EspIntrAlloc(n4, n3, n2, n1, a0); NIPn(4)) \
Y(esp_intr_free, n0 = esp_intr_free((intr_handle_t) n0)) \
Y(timer_isr_register, n0 = TimerIsrRegister(n5, n4, n3, n2, n1, a0); NIPn(5))
#endif
#ifndef ENABLE_CAMERA_SUPPORT
# define OPTIONAL_CAMERA_SUPPORT
#else
# include "esp_camera.h"
# define OPTIONAL_CAMERA_SUPPORT \
Y(esp_camera_init, n0 = esp_camera_init((camera_config_t *) a0)) \
Y(esp_camera_deinit, PUSH esp_camera_deinit()) \
Y(esp_camera_fb_get, PUSH esp_camera_fb_get()) \
Y(esp_camera_fb_return, esp_camera_fb_return((camera_fb_t *) a0); DROP) \
Y(esp_camera_sensor_get, PUSH esp_camera_sensor_get())
#endif
#ifndef ENABLE_SOCKETS_SUPPORT
# define OPTIONAL_SOCKETS_SUPPORT
#else
# include <errno.h>
# include <sys/select.h>
# include <sys/socket.h>
# include <sys/time.h>
# include <sys/types.h>
# include <sys/un.h>
# include <sys/poll.h>
# define OPTIONAL_SOCKETS_SUPPORT \
Y(socket, n0 = socket(n2, n1, n0); NIPn(2)) \
Y(setsockopt, n0 = setsockopt(n4, n3, n2, a1, n0); NIPn(4)) \
Y(bind, n0 = bind(n2, (struct sockaddr *) a1, n0); NIPn(2)) \
Y(listen, n0 = listen(n1, n0); NIP) \
Y(connect, n0 = connect(n2, (struct sockaddr *) a1, n0); NIPn(2)) \
Y(sockaccept, n0 = accept(n2, (struct sockaddr *) a1, (socklen_t *) a0); NIPn(2)) \
Y(select, n0 = select(n4, (fd_set *) a3, (fd_set *) a2, (fd_set *) a1, (struct timeval *) a0); NIPn(4)) \
Y(poll, n0 = poll((struct pollfd *) a2, (nfds_t) n1, n0); NIPn(2)) \
Y(errno, PUSH errno)
#endif
#ifndef ENABLE_SDCARD_SUPPORT
# define OPTIONAL_SDCARD_SUPPORT
#else
# include "SD_MMC.h"
# define OPTIONAL_SDCARD_SUPPORT \
X("SD_MMC.begin", SD_MMC_BEGIN, tos = SD_MMC.begin(c1, n0); NIP) \
X("SD_MMC.end", SD_MMC_END, SD_MMC.end()) \
X("SD_MMC.cardType", SD_MMC_CARD_TYPE, PUSH SD_MMC.cardType()) \
X("SD_MMC.totalBytes", SD_MMC_TOTAL_BYTES, PUSH SD_MMC.totalBytes()) \
X("SD_MMC.usedBytes", SD_MMC_USED_BYTES, PUSH SD_MMC.usedBytes())
#endif
#ifndef ENABLE_I2C_SUPPORT
# define OPTIONAL_I2C_SUPPORT
#else
# include <Wire.h>
# define OPTIONAL_I2C_SUPPORT \
X("Wire.begin", WIRE_BEGIN, n0 = Wire.begin(n1, n0); NIP) \
X("Wire.setClock", WIRE_SET_CLOCK, Wire.setClock(n0); DROP) \
X("Wire.getClock", WIRE_GET_CLOCK, PUSH Wire.getClock()) \
X("Wire.setTimeout", WIRE_SET_TIMEOUT, Wire.setTimeout(n0); DROP) \
X("Wire.getTimeout", WIRE_GET_TIMEOUT, PUSH Wire.getTimeout()) \
X("Wire.beginTransmission", WIRE_BEGIN_TRANSMISSION, Wire.beginTransmission(n0); DROP) \
X("Wire.endTransmission", WIRE_END_TRANSMISSION, SET Wire.endTransmission(n0)) \
X("Wire.requestFrom", WIRE_REQUEST_FROM, n0 = Wire.requestFrom(n2, n1, n0); NIPn(2)) \
X("Wire.write", WIRE_WRITE, n0 = Wire.write(b1, n0); NIP) \
X("Wire.available", WIRE_AVAILABLE, PUSH Wire.available()) \
X("Wire.read", WIRE_READ, PUSH Wire.read()) \
X("Wire.peek", WIRE_PEEK, PUSH Wire.peek()) \
X("Wire.flush", WIRE_FLUSH, Wire.flush())
#endif
#ifndef ENABLE_SERIAL_BLUETOOTH_SUPPORT
# define OPTIONAL_SERIAL_BLUETOOTH_SUPPORT
#else
# include "esp_bt_device.h"
# include "BluetoothSerial.h"
# define bt0 ((BluetoothSerial *) a0)
# define OPTIONAL_SERIAL_BLUETOOTH_SUPPORT \
X("SerialBT.new", SERIALBT_NEW, PUSH new BluetoothSerial()) \
X("SerialBT.delete", SERIALBT_DELETE, delete bt0; DROP) \
X("SerialBT.begin", SERIALBT_BEGIN, n0 = bt0->begin(c2, n1); NIPn(2)) \
X("SerialBT.end", SERIALBT_END, bt0->end(); DROP) \
X("SerialBT.available", SERIALBT_AVAILABLE, n0 = bt0->available()) \
X("SerialBT.readBytes", SERIALBT_READ_BYTES, n0 = bt0->readBytes(b2, n1); NIPn(2)) \
X("SerialBT.write", SERIALBT_WRITE, n0 = bt0->write(b2, n1); NIPn(2)) \
X("SerialBT.flush", SERIALBT_FLUSH, bt0->flush(); DROP) \
X("SerialBT.hasClient", SERIALBT_HAS_CLIENT, n0 = bt0->hasClient()) \
X("SerialBT.enableSSP", SERIALBT_ENABLE_SSP, bt0->enableSSP(); DROP) \
X("SerialBT.setPin", SERIALBT_SET_PIN, n0 = bt0->setPin(c1); NIP) \
X("SerialBT.unpairDevice", SERIALBT_UNPAIR_DEVICE, \
n0 = bt0->unpairDevice(b1); NIP) \
X("SerialBT.connect", SERIALBT_CONNECT, n0 = bt0->connect(c1); NIP) \
X("SerialBT.connectAddr", SERIALBT_CONNECT_ADDR, n0 = bt0->connect(b1); NIP) \
X("SerialBT.disconnect", SERIALBT_DISCONNECT, n0 = bt0->disconnect()) \
X("SerialBT.connected", SERIALBT_CONNECTED, n0 = bt0->connected(n1); NIP) \
X("SerialBT.isReady", SERIALBT_IS_READY, n0 = bt0->isReady(n2, n1); NIPn(2)) \
/* Bluetooth */ \
Y(esp_bt_dev_get_address, PUSH esp_bt_dev_get_address())
#endif
#ifndef ENABLE_WIFI_SUPPORT
# define OPTIONAL_WIFI_SUPPORT
#else
# include <WiFi.h>
# include <WiFiClient.h>
static IPAddress ToIP(cell_t ip) {
return IPAddress(ip & 0xff, ((ip >> 8) & 0xff), ((ip >> 16) & 0xff), ((ip >> 24) & 0xff));
}
static cell_t FromIP(IPAddress ip) {
cell_t ret = 0;
ret = (ret << 8) | ip[3];
ret = (ret << 8) | ip[2];
ret = (ret << 8) | ip[1];
ret = (ret << 8) | ip[0];
return ret;
}
# define OPTIONAL_WIFI_SUPPORT \
/* WiFi */ \
X("WiFi.config", WIFI_CONFIG, \
WiFi.config(ToIP(n3), ToIP(n2), ToIP(n1), ToIP(n0)); DROPn(4)) \
X("WiFi.begin", WIFI_BEGIN, WiFi.begin(c1, c0); DROPn(2)) \
X("WiFi.disconnect", WIFI_DISCONNECT, WiFi.disconnect()) \
X("WiFi.status", WIFI_STATUS, PUSH WiFi.status()) \
X("WiFi.macAddress", WIFI_MAC_ADDRESS, WiFi.macAddress(b0); DROP) \
X("WiFi.localIP", WIFI_LOCAL_IPS, PUSH FromIP(WiFi.localIP())) \
X("WiFi.mode", WIFI_MODE, WiFi.mode((wifi_mode_t) n0); DROP) \
X("WiFi.setTxPower", WIFI_SET_TX_POWER, WiFi.setTxPower((wifi_power_t) n0); DROP) \
X("WiFi.getTxPower", WIFI_GET_TX_POWER, PUSH WiFi.getTxPower())
#endif
#ifndef ENABLE_MDNS_SUPPORT
# define OPTIONAL_MDNS_SUPPORT
#else
# include <ESPmDNS.h>
# define OPTIONAL_MDNS_SUPPORT \
/* mDNS */ \
X("MDNS.begin", MDNS_BEGIN, n0 = MDNS.begin(c0))
#endif
#ifndef ENABLE_WEBSERVER_SUPPORT
# define OPTIONAL_WEBSERVER_SUPPORT
#else
# include <WebServer.h>
# define ws0 ((WebServer *) a0)
# define OPTIONAL_WEBSERVER_SUPPORT \
/* WebServer */ \
X("WebServer.new", WEBSERVER_NEW, PUSH new WebServer(tos)) \
X("WebServer.delete", WEBSERVER_DELETE, delete ws0; DROP) \
X("WebServer.begin", WEBSERVER_BEGIN, ws0->begin(n1); DROPn(2)) \
X("WebServer.stop", WEBSERVER_STOP, ws0->stop(); DROP) \
X("WebServer.on", WEBSERVER_ON, InvokeWebServerOn(ws0, c2, n1); DROPn(3)) \
X("WebServer.hasArg", WEBSERVER_HAS_ARG, n0 = ws0->hasArg(c1); DROP) \
X("WebServer.arg", WEBSERVER_ARG, \
string_value = ws0->arg(c1); \
c1 = &string_value[0]; n0 = string_value.length()) \
X("WebServer.argi", WEBSERVER_ARGI, \
string_value = ws0->arg(n1); \
c1 = &string_value[0]; n0 = string_value.length()) \
X("WebServer.argName", WEBSERVER_ARG_NAME, \
string_value = ws0->argName(n1); \
c1 = &string_value[0]; n0 = string_value.length()) \
X("WebServer.args", WEBSERVER_ARGS, n0 = ws0->args()) \
X("WebServer.setContentLength", WEBSERVER_SET_CONTENT_LENGTH, \
ws0->setContentLength(n1); DROPn(2)) \
X("WebServer.sendHeader", WEBSERVER_SEND_HEADER, \
ws0->sendHeader(c3, c2, n1); DROPn(4)) \
X("WebServer.send", WEBSERVER_SEND, ws0->send(n3, c2, c1); DROPn(4)) \
X("WebServer.sendContent", WEBSERVER_SEND_CONTENT, \
ws0->sendContent(c1); DROPn(2)) \
X("WebServer.method", WEBSERVER_METHOD, n0 = ws0->method()) \
X("WebServer.handleClient", WEBSERVER_HANDLE_CLIENT, ws0->handleClient(); DROP)
#endif
#ifndef ENABLE_OLED_SUPPORT
# define OPTIONAL_OLED_SUPPORT
#else
# include <Adafruit_GFX.h>
# include <Adafruit_SSD1306.h>
static Adafruit_SSD1306 *oled_display = 0;
# define OPTIONAL_OLED_SUPPORT \
Y(OledAddr, PUSH &oled_display) \
Y(OledNew, oled_display = new Adafruit_SSD1306(n2, n1, &Wire, n0); DROPn(3)) \
Y(OledDelete, delete oled_display) \
Y(OledBegin, n0 = oled_display->begin(n1, n0); NIP) \
Y(OledHOME, oled_display->setCursor(0,0); DROP) \
Y(OledCLS, oled_display->clearDisplay()) \
Y(OledTextc, oled_display->setTextColor(n0); DROP) \
Y(OledPrintln, oled_display->println(c0); DROP) \
Y(OledNumln, oled_display->println(n0); DROP) \
Y(OledNum, oled_display->print(n0); DROP) \
Y(OledDisplay, oled_display->display()) \
Y(OledPrint, oled_display->write(c0); DROP) \
Y(OledInvert, oled_display->invertDisplay(n0); DROP) \
Y(OledTextsize, oled_display->setTextSize(n0); DROP) \
Y(OledSetCursor, oled_display->setCursor(n1,n0); DROPn(2)) \
Y(OledPixel, oled_display->drawPixel(n2, n1, n0); DROPn(2)) \
Y(OledDrawL, oled_display->drawLine(n4, n3, n2, n1, n0); DROPn(4)) \
Y(OledCirc, oled_display->drawCircle(n3,n2, n1, n0); DROPn(3)) \
Y(OledCircF, oled_display->fillCircle(n3, n2, n1, n0); DROPn(3)) \
Y(OledRect, oled_display->drawRect(n4, n3, n2, n1, n0); DROPn(4)) \
Y(OledRectF, oled_display->fillRect(n4, n3, n2, n1, n0); DROPn(3)) \
Y(OledRectR, oled_display->drawRoundRect(n5, n4, n3, n2, n1, n0); DROPn(5)) \
Y(OledRectRF, oled_display->fillRoundRect(n5, n4, n3, n2, n1, n0 ); DROPn(5))
#endif
static char filename[PATH_MAX];
static String string_value;
static cell_t EspIntrAlloc(cell_t source, cell_t flags, cell_t xt, cell_t arg, cell_t *ret);
static cell_t GpioIsrHandlerAdd(cell_t pin, cell_t xt, cell_t arg);
static cell_t TimerIsrRegister(cell_t group, cell_t timer, cell_t xt, cell_t arg, void *ret);
#define PRINT_ERRORS 0
#define CELL_MASK (sizeof(cell_t) - 1)
#define CELL_LEN(n) (((n) + CELL_MASK) / sizeof(cell_t))
#define FIND(name) find(name, sizeof(name) - 1)
#define UPPER(ch) (((ch) >= 'a' && (ch) <= 'z') ? ((ch) & 0x5F) : (ch))
#define CELL_ALIGNED(a) (((cell_t) (a) + CELL_MASK) & ~CELL_MASK)
#define IMMEDIATE 1
#define SMUDGE 2
#define VOCABULARY_DEPTH 16
#if PRINT_ERRORS
#include <unistd.h>
#endif
static struct {
const char *tib;
cell_t ntib, tin, state, base;
cell_t *heap, **current, ***context, notfound;
int argc;
char **argv;
cell_t *(*runner)(cell_t *rp); // pointer to forth_run
cell_t *rp; // spot to park main thread
cell_t DOLIT_XT, DOFLIT_XT, DOEXIT_XT, YIELD_XT;
} g_sys;
static cell_t convert(const char *pos, cell_t n, cell_t base, cell_t *ret) {
*ret = 0;
cell_t negate = 0;
if (!n) { return 0; }
if (*pos == '-') { negate = -1; ++pos; --n; }
if (*pos == '$') { base = 16; ++pos; --n; }
for (; n; --n) {
uintptr_t d = UPPER(*pos) - '0';
if (d > 9) {
d -= 7;
if (d < 10) { return 0; }
}
if (d >= base) { return 0; }
*ret = *ret * base + d;
++pos;
}
if (negate) { *ret = -*ret; }
return -1;
}
static cell_t fconvert(const char *pos, cell_t n, float *ret) {
*ret = 0;
cell_t negate = 0;
cell_t has_dot = 0;
cell_t exp = 0;
float shift = 1.0;
if (!n) { return 0; }
if (*pos == '-') { negate = -1; ++pos; --n; }
for (; n; --n) {
if (*pos >= '0' && *pos <= '9') {
if (has_dot) {
shift = shift * 0.1f;
*ret = *ret + (*pos - '0') * shift;
} else {
*ret = *ret * 10 + (*pos - '0');
}
} else if (*pos == 'e' || *pos == 'E') {
break;
} else if (*pos == '.') {
if (has_dot) { return 0; }
has_dot = -1;
}
++pos;
}
if (!n) { return 0; } // must have E
++pos; --n;
if (n) {
if (!convert(pos, n, 10, &exp)) { return 0; }
}
if (exp < -128 || exp > 128) { return 0; }
for (;exp < 0; ++exp) { *ret *= 0.1f; }
for (;exp > 0; --exp) { *ret *= 10.0f; }
if (negate) { *ret = -*ret; }
return -1;
}
static cell_t same(const char *a, const char *b, cell_t len) {
for (;len && UPPER(*a) == UPPER(*b); --len, ++a, ++b);
return len == 0;
}
static cell_t find(const char *name, cell_t len) {
for (cell_t ***voc = g_sys.context; *voc; ++voc) {
cell_t *pos = **voc;
cell_t clen = CELL_LEN(len);
while (pos) {
if (!(pos[-1] & SMUDGE) && len == pos[-3] &&
same(name, (const char *) &pos[-3 - clen], len)) {
return (cell_t) pos;
}
pos = (cell_t *) pos[-2]; // Follow link
}
}
return 0;
}
static void create(const char *name, cell_t length, cell_t flags, void *op) {
g_sys.heap = (cell_t *) CELL_ALIGNED(g_sys.heap);
char *pos = (char *) g_sys.heap;
for (cell_t n = length; n; --n) { *pos++ = *name++; } // name
g_sys.heap += CELL_LEN(length);
*g_sys.heap++ = length; // length
*g_sys.heap++ = (cell_t) *g_sys.current; // link
*g_sys.heap++ = flags; // flags
*g_sys.current = g_sys.heap;
*g_sys.heap++ = (cell_t) op; // code
}
static int match(char sep, char ch) {
return sep == ch || (sep == ' ' && (ch == '\t' || ch == '\n' || ch == '\r'));
}
static cell_t parse(cell_t sep, cell_t *ret) {
while (g_sys.tin < g_sys.ntib &&
match(sep, g_sys.tib[g_sys.tin])) { ++g_sys.tin; }
*ret = (cell_t) (g_sys.tib + g_sys.tin);
while (g_sys.tin < g_sys.ntib &&
!match(sep, g_sys.tib[g_sys.tin])) { ++g_sys.tin; }
cell_t len = g_sys.tin - (*ret - (cell_t) g_sys.tib);
if (g_sys.tin < g_sys.ntib) { ++g_sys.tin; }
return len;
}
static cell_t *evaluate1(cell_t *sp, float **fp) {
cell_t call = 0;
cell_t name;
cell_t len = parse(' ', &name);
if (len == 0) { *++sp = 0; return sp; } // ignore empty
cell_t xt = find((const char *) name, len);
if (xt) {
if (g_sys.state && !(((cell_t *) xt)[-1] & IMMEDIATE)) {
*g_sys.heap++ = xt;
} else {
call = xt;
}
} else {
cell_t n;
if (convert((const char *) name, len, g_sys.base, &n)) {
if (g_sys.state) {
*g_sys.heap++ = g_sys.DOLIT_XT;
*g_sys.heap++ = n;
} else {
*++sp = n;
}
} else {
float f;
if (fconvert((const char *) name, len, &f)) {
if (g_sys.state) {
*g_sys.heap++ = g_sys.DOFLIT_XT;
*(float *) g_sys.heap++ = f;
} else {
*++(*fp) = f;
}
} else {
#if PRINT_ERRORS
write(2, (void *) name, len);
write(2, "\n", 1);
#endif
*++sp = name;
*++sp = len;
*++sp = -1;
call = g_sys.notfound;
}
}
}
*++sp = call;
return sp;
}
static cell_t *forth_run(cell_t *initrp);
static void forth_init(int argc, char *argv[], void *heap,
const char *src, cell_t src_len) {
g_sys.heap = ((cell_t *) heap) + 4; // Leave a little room.
cell_t *sp = g_sys.heap + 1; g_sys.heap += STACK_SIZE;
cell_t *rp = g_sys.heap + 1; g_sys.heap += STACK_SIZE;
float *fp = (float *) (g_sys.heap + 1); g_sys.heap += STACK_SIZE;
// FORTH vocabulary
*g_sys.heap++ = 0; cell_t *forth = g_sys.heap;
*g_sys.heap++ = 0; *g_sys.heap++ = 0; *g_sys.heap++ = 0;
// Vocabulary stack
g_sys.current = (cell_t **) forth;
g_sys.context = (cell_t ***) g_sys.heap;
*g_sys.heap++ = (cell_t) forth;
for (int i = 0; i < VOCABULARY_DEPTH; ++i) { *g_sys.heap++ = 0; }
forth_run(0);
(*g_sys.current)[-1] = IMMEDIATE; // Make last word ; IMMEDIATE
g_sys.DOLIT_XT = FIND("DOLIT");
g_sys.DOFLIT_XT = FIND("DOFLIT");
g_sys.DOEXIT_XT = FIND("EXIT");
g_sys.YIELD_XT = FIND("YIELD");
g_sys.notfound = FIND("DROP");
cell_t *start = g_sys.heap;
*g_sys.heap++ = FIND("EVALUATE1");
*g_sys.heap++ = FIND("BRANCH");
*g_sys.heap++ = (cell_t) start;
g_sys.argc = argc;
g_sys.argv = argv;
g_sys.base = 10;
g_sys.tib = src;
g_sys.ntib = src_len;
*++rp = (cell_t) sp;
*++rp = (cell_t) fp;
*++rp = (cell_t) start;
g_sys.rp = rp;
g_sys.runner = forth_run;
}
#define JMPW goto **(void **) w
#define NEXT w = *ip++; JMPW
#define ADDR_DOCOLON && OP_DOCOLON
#define ADDR_DOCREATE && OP_DOCREATE
#define ADDR_DODOES && OP_DODOES
static cell_t *forth_run(cell_t *init_rp) {
if (!init_rp) {
#define X(name, op, code) create(name, sizeof(name) - 1, name[0] == ';', && OP_ ## op);
PLATFORM_OPCODE_LIST
OPCODE_LIST
#undef X
return 0;
}
register cell_t *ip, *rp, *sp, tos, w;
register float *fp;
rp = init_rp; ip = (cell_t *) *rp--; sp = (cell_t *) *rp--;
fp = (float *) *rp--;
DROP; NEXT;
#define X(name, op, code) OP_ ## op: { code; } NEXT;
PLATFORM_OPCODE_LIST
OPCODE_LIST
#undef X
OP_DOCOLON: ++rp; *rp = (cell_t) ip; ip = (cell_t *) (w + sizeof(cell_t)); NEXT;
OP_DOCREATE: DUP; tos = w + sizeof(cell_t) * 2; NEXT;
OP_DODOES: DUP; tos = w + sizeof(cell_t) * 2;
++rp; *rp = (cell_t) ip; ip = (cell_t *) *(cell_t *) (w + sizeof(cell_t)); NEXT;
}
const char boot[] =
": ( 41 parse drop drop ; immediate\n"
": \\ 10 parse drop drop ; immediate\n"
"\n"
"( Useful Basic Compound Words )\n"
": nip ( a b -- b ) swap drop ;\n"
": rdrop ( r: n n -- ) r> r> drop >r ;\n"
": */ ( n n n -- n ) */mod nip ;\n"
": * ( n n -- n ) 1 */ ;\n"
": /mod ( n n -- n n ) 1 swap */mod ;\n"
": / ( n n -- n ) /mod nip ;\n"
": mod ( n n -- n ) /mod drop ;\n"
": invert ( n -- ~n ) -1 xor ;\n"
": negate ( n -- -n ) invert 1 + ;\n"
": - ( n n -- n ) negate + ;\n"
": rot ( a b c -- c a b ) >r swap r> swap ;\n"
": -rot ( a b c -- b c a ) swap >r swap r> ;\n"
": < ( a b -- a<b ) - 0< ;\n"
": > ( a b -- a>b ) swap - 0< ;\n"
": <= ( a b -- a>b ) swap - 0< 0= ;\n"
": >= ( a b -- a<b ) - 0< 0= ;\n"
": = ( a b -- a!=b ) - 0= ;\n"
": <> ( a b -- a!=b ) = 0= ;\n"
": 0<> ( n -- n) 0= 0= ;\n"
": bl 32 ; : nl 10 ;\n"
": 1+ 1 + ; : 1- 1 - ;\n"
": 2* 2 * ; : 2/ 2 / ;\n"
": 4* 4 * ; : 4/ 4 / ;\n"
": +! ( n a -- ) swap over @ + swap ! ;\n"
"\n"
"( Cells )\n"
": cell+ ( n -- n ) cell + ;\n"
": cells ( n -- n ) cell * ;\n"
": cell/ ( n -- n ) cell / ;\n"
"\n"
"( Double Words )\n"
": 2drop ( n n -- ) drop drop ;\n"
": 2dup ( a b -- a b a b ) over over ;\n"
": 2@ ( a -- lo hi ) dup @ swap cell+ @ ;\n"
": 2! ( lo hi a -- ) dup >r cell+ ! r> ! ;\n"
"\n"
"( System Variables )\n"
": 'tib ( -- a ) 'sys 0 cells + ;\n"
": #tib ( -- a ) 'sys 1 cells + ;\n"
": >in ( -- a ) 'sys 2 cells + ;\n"
": state ( -- a ) 'sys 3 cells + ;\n"
": base ( -- a ) 'sys 4 cells + ;\n"
": 'heap ( -- a ) 'sys 5 cells + ;\n"
": current ( -- a ) 'sys 6 cells + ;\n"
": 'context ( -- a ) 'sys 7 cells + ; : context 'context @ cell+ ;\n"
": 'notfound ( -- a ) 'sys 8 cells + ;\n"
"\n"
"( Dictionary )\n"
": here ( -- a ) 'heap @ ;\n"
": allot ( n -- ) 'heap +! ;\n"
": aligned ( a -- a ) cell 1 - dup >r + r> invert and ;\n"
": align here aligned here - allot ;\n"
": , ( n -- ) here ! cell allot ;\n"
": c, ( ch -- ) here c! 1 allot ;\n"
"\n"
"( Compilation State )\n"
": [ 0 state ! ; immediate\n"
": ] -1 state ! ; immediate\n"
"\n"
"( Quoting Words )\n"
": ' bl parse 2dup find dup >r -rot r> 0= 'notfound @ execute 2drop ;\n"
": ['] ' aliteral ; immediate\n"
": char bl parse drop c@ ;\n"
": [char] char aliteral ; immediate\n"
": literal aliteral ; immediate\n"
"\n"
"( Core Control Flow )\n"
": begin here ; immediate\n"
": again ['] branch , , ; immediate\n"
": until ['] 0branch , , ; immediate\n"
": ahead ['] branch , here 0 , ; immediate\n"
": then here swap ! ; immediate\n"
": if ['] 0branch , here 0 , ; immediate\n"
": else ['] branch , here 0 , swap here swap ! ; immediate\n"
": while ['] 0branch , here 0 , swap ; immediate\n"
": repeat ['] branch , , here swap ! ; immediate\n"
": aft drop ['] branch , here 0 , here swap ; immediate\n"
"\n"
"( Recursion )\n"
": recurse current @ @ aliteral ['] execute , ; immediate\n"
"\n"
"( Compound words requiring conditionals )\n"
": min 2dup < if drop else nip then ;\n"
": max 2dup < if nip else drop then ;\n"
": abs ( n -- +n ) dup 0< if negate then ;\n"
"\n"
"( Dictionary Format )\n"
": >name ( xt -- a n ) 3 cells - dup @ swap over aligned - swap ;\n"
": >link& ( xt -- a ) 2 cells - ; : >link ( xt -- a ) >link& @ ;\n"
": >flags ( xt -- flags ) cell - ;\n"
": >body ( xt -- a ) dup @ [ ' >flags @ ] literal = 2 + cells + ;\n"
"\n"
"( Postpone - done here so we have ['] and IF )\n"
": immediate? ( xt -- f ) >flags @ 1 and 0= 0= ;\n"
": postpone ' dup immediate? if , else aliteral ['] , , then ; immediate\n"
"\n"
"( Constants and Variables )\n"
": constant ( n \"name\" -- ) create , does> @ ;\n"
": variable ( \"name\" -- ) create 0 , ;\n"
"\n"
"( Stack Convience )\n"
"sp@ constant sp0\n"
"rp@ constant rp0\n"
"fp@ constant fp0\n"
": depth ( -- n ) sp@ sp0 - cell/ ;\n"
": fdepth ( -- n ) fp@ fp0 - 4 / ;\n"
"\n"
"( Rstack nest depth )\n"
"variable nest-depth\n"
"\n"
"( FOR..NEXT )\n"
": for 1 nest-depth +! postpone >r postpone begin ; immediate\n"
": next -1 nest-depth +! postpone donext , ; immediate\n"
"\n"
"( DO..LOOP )\n"
"variable leaving\n"
": leaving, here leaving @ , leaving ! ;\n"
": leaving( leaving @ 0 leaving ! 2 nest-depth +! ;\n"
": )leaving leaving @ swap leaving ! -2 nest-depth +!\n"
" begin dup while dup @ swap here swap ! repeat drop ;\n"
": (do) ( n n -- .. ) swap r> -rot >r >r >r ;\n"
": do ( lim s -- ) leaving( postpone (do) here ; immediate\n"