mirror of https://github.com/janet-lang/janet
91 lines
2.1 KiB
C
91 lines
2.1 KiB
C
#include <stdlib.h>
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#include <stdio.h>
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#include "datatypes.h"
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#include "gc.h"
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#include "vm.h"
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#include "parse.h"
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#include "compile.h"
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#include "value.h"
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/* A simple repl for debugging */
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void debugRepl() {
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char buffer[128] = {0};
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const char * reader = buffer;
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Func * func;
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VM vm;
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Parser p;
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Compiler c;
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VMInit(&vm);
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for (;;) {
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/* Run garbage collection */
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VMMaybeCollect(&vm);
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/* Reset state */
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ParserInit(&p, &vm);
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/* Get and parse input until we have a full form */
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while (p.status == PARSER_PENDING) {
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/* Get some input if we are done */
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if (*reader == '\0') {
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printf(">> ");
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if (!fgets(buffer, sizeof(buffer), stdin)) {
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return;
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}
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p.index = 0;
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reader = buffer;
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}
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reader += ParserParseCString(&p, reader);
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}
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/* Check for parsing errors */
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if (p.error) {
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unsigned i;
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printf("\n");
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printf("%s\n", buffer);
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for (i = 0; i < p.index; ++i) {
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printf(" ");
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}
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printf("^\n");
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printf("\nParse error: %s\n", p.error);
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reader = buffer; /* Flush the input buffer */
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buffer[0] = '\0';
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continue;
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}
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/* Try to compile generated AST */
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CompilerInit(&c, &vm);
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func = CompilerCompile(&c, p.value);
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/* Check for compilation errors */
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if (c.error) {
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printf("Compiler error: %s\n", c.error);
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reader = buffer;
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buffer[0] = 0;
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continue;
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} else {
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printf("Compiled!\n");
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}
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/* Execute function */
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VMLoad(&vm, func);
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if (VMStart(&vm)) {
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printf("VM error: %s\n", vm.error);
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reader = buffer;
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buffer[0] = 0;
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continue;
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} else {
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ValuePrint(&vm.tempRoot, 0);
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printf("\n");
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}
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}
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}
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int main() {
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printf("Super cool interpreter v0.0\n");
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debugRepl();
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}
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