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6b3ecaa769
By default, garbage collection is enabled. You can run:
make USE_GC=
to build the C implementation without garbage collection.
45 lines
780 B
C
45 lines
780 B
C
#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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#ifdef USE_READLINE
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#include <readline/readline.h>
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#include <readline/history.h>
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#else
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#include <editline/readline.h>
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#endif
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char *READ(char prompt[]) {
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char *line;
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line = readline(prompt);
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if (!line) return NULL; // EOF
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add_history(line); // Add input to history.
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return line;
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}
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char *EVAL(char *ast, void *env) {
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return ast;
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}
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char *PRINT(char *exp) {
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return exp;
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}
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int main()
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{
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char *ast, *exp;
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char prompt[100];
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// Set the initial prompt
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snprintf(prompt, sizeof(prompt), "user> ");
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for(;;) {
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ast = READ(prompt);
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if (!ast) return 0;
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exp = EVAL(ast, NULL);
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puts(PRINT(exp));
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free(ast); // Free input string
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}
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}
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