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Warn on out-of-order defines in bodies (error in strict mode).

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Fixes issue #236.
This commit is contained in:
Alex Shinn 2016-02-28 18:12:32 +09:00
parent b60a9a28a7
commit f66797ecdf
1 changed files with 16 additions and 0 deletions
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16
eval.c
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@ -642,6 +642,17 @@ sexp sexp_identifier_eq_op (sexp ctx, sexp self, sexp_sint_t n, sexp e1, sexp id
/************************* the compiler ***************************/
static int nondefp(sexp x) {
sexp ls;
if (sexp_pairp(x) || sexp_cndp(x))
return 1;
if (sexp_seqp(x))
for (ls=sexp_seq_ls(x); sexp_pairp(ls); ls=sexp_cdr(ls))
if (nondefp(sexp_car(ls)))
return 1;
return 0;
}
static sexp analyze_list (sexp ctx, sexp x, int depth, int defok) {
sexp_gc_var2(res, tmp);
sexp_gc_preserve2(ctx, res, tmp);
@ -652,6 +663,7 @@ static sexp analyze_list (sexp ctx, sexp x, int depth, int defok) {
res = tmp;
break;
} else {
if (nondefp(tmp)) defok = -1; /* -1 to warn */
sexp_pair_source(res) = sexp_pair_source(x);
sexp_car(res) = tmp;
}
@ -990,6 +1002,8 @@ static sexp analyze (sexp ctx, sexp object, int depth, int defok) {
if (sexp_corep(op)) {
switch (sexp_core_code(op)) {
case SEXP_CORE_DEFINE:
if (defok < 0)
sexp_warn(ctx, "out of order define: ", x);
res = defok ? analyze_define(ctx, x, depth)
: sexp_compile_error(ctx, "unexpected define", x);
break;
@ -1012,6 +1026,8 @@ static sexp analyze (sexp ctx, sexp object, int depth, int defok) {
sexp_cadr(x));
break;
case SEXP_CORE_DEFINE_SYNTAX:
if (defok < 0)
sexp_warn(ctx, "out of order define-syntax: ", x);
res = defok ? analyze_define_syntax(ctx, x)
: sexp_compile_error(ctx, "unexpected define-syntax", x);
break;