mirror of https://github.com/janet-lang/janet
107 lines
3.9 KiB
C
107 lines
3.9 KiB
C
/*
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* Copyright (c) 2019 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 <janet.h>
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#include "state.h"
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#endif
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/* Run a string */
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int janet_dobytes(JanetTable *env, const uint8_t *bytes, int32_t len, const char *sourcePath, Janet *out) {
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JanetParser parser;
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int errflags = 0, done = 0;
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int32_t index = 0;
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Janet ret = janet_wrap_nil();
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const uint8_t *where = sourcePath ? janet_cstring(sourcePath) : NULL;
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if (where) janet_gcroot(janet_wrap_string(where));
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if (NULL == sourcePath) sourcePath = "<unknown>";
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janet_parser_init(&parser);
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/* While we haven't seen an error */
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while (!done) {
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/* Evaluate parsed values */
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while (janet_parser_has_more(&parser)) {
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Janet form = janet_parser_produce(&parser);
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JanetCompileResult cres = janet_compile(form, env, where);
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if (cres.status == JANET_COMPILE_OK) {
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JanetFunction *f = janet_thunk(cres.funcdef);
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JanetFiber *fiber = janet_fiber(f, 64, 0, NULL);
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fiber->env = env;
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JanetSignal status = janet_continue(fiber, janet_wrap_nil(), &ret);
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if (status != JANET_SIGNAL_OK) {
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janet_stacktrace(fiber, ret);
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errflags |= 0x01;
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done = 1;
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}
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} else {
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fprintf(stderr, "compile error in %s: %s\n", sourcePath,
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(const char *)cres.error);
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errflags |= 0x02;
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done = 1;
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}
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}
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/* Dispatch based on parse state */
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switch (janet_parser_status(&parser)) {
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case JANET_PARSE_DEAD:
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done = 1;
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break;
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case JANET_PARSE_ERROR:
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errflags |= 0x04;
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fprintf(stderr, "parse error in %s: %s\n",
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sourcePath, janet_parser_error(&parser));
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done = 1;
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break;
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case JANET_PARSE_PENDING:
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if (index == len) {
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janet_parser_eof(&parser);
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} else {
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janet_parser_consume(&parser, bytes[index++]);
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}
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break;
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case JANET_PARSE_ROOT:
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if (index >= len) {
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janet_parser_eof(&parser);
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} else {
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janet_parser_consume(&parser, bytes[index++]);
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}
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break;
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}
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}
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/* Clean up and return errors */
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janet_parser_deinit(&parser);
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if (where) janet_gcunroot(janet_wrap_string(where));
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if (out) *out = ret;
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return errflags;
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}
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int janet_dostring(JanetTable *env, const char *str, const char *sourcePath, Janet *out) {
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int32_t len = 0;
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while (str[len]) ++len;
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return janet_dobytes(env, (const uint8_t *)str, len, sourcePath, out);
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}
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