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Add register parameters to AM append operation

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This commit is contained in:
Camden Dixie O'Brien
2025-08-10 20:50:35 +01:00
parent 76efcef953
commit eaef6f3cd3
5 changed files with 40 additions and 24 deletions
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6
lib/am.c
View File

@@ -26,13 +26,13 @@ void am_pop(am_t *am, am_reg_t reg)
am->regs[reg] = *++am->sp;
}
void am_append_arg(am_t *am)
void am_append(am_t *am, am_reg_t list_reg, am_reg_t item_reg)
{
expr_t *list = AM_ARGL(am);
expr_t *list = am->regs[list_reg];
while (!list->is_atom)
list = list->pair.cdr;
list->is_atom = false;
list->pair.car = AM_VAL(am);
list->pair.car = am->regs[item_reg];
list->pair.cdr = expr_empty_list(am);
}

2
lib/eval.c
View File

@@ -34,7 +34,7 @@ static void eval_list(am_t *am)
eval(am);
am_pop(am, ARGL);
am_append_arg(am);
am_append(am, ARGL, VAL);
am_pop(am, UNEV);
am_pop(am, EXPR);

2
lib/include/am.h
View File

@@ -31,6 +31,6 @@ typedef struct am {
void am_init(am_t *am);
void am_push(am_t *am, am_reg_t reg);
void am_pop(am_t *am, am_reg_t reg);
void am_append_arg(am_t *am);
void am_append(am_t *am, am_reg_t list_reg, am_reg_t item_reg);
#endif

22
lib/parse.c
View File

@@ -22,18 +22,6 @@ static parse_state_t pop_state(parse_ctx_t *ctx)
return *++ctx->sp;
}
static void append(parse_ctx_t *ctx, expr_t *expr)
{
expr_t *list = AM_EXPR(ctx->am);
while (!list->is_atom)
list = list->pair.cdr;
assert(list->atom.type == ATOM_TYPE_EMPTY_LIST);
list->is_atom = false;
list->pair.car = expr;
list->pair.cdr = expr_empty_list(ctx->am);
}
parse_state_t parse_proc(parse_ctx_t *ctx, const token_t *token)
{
switch (ctx->state) {
@@ -61,10 +49,12 @@ parse_state_t parse_proc(parse_ctx_t *ctx, const token_t *token)
case PARSE_STATE_LIST:
switch (token->type) {
case TOKEN_TYPE_INTEGER:
append(ctx, expr_integer(ctx->am, token->integer));
AM_VAL(ctx->am) = expr_integer(ctx->am, token->integer);
am_append(ctx->am, EXPR, VAL);
break;
case TOKEN_TYPE_SYMBOL:
append(ctx, expr_symbol(ctx->am, &token->symbol));
AM_VAL(ctx->am) = expr_symbol(ctx->am, &token->symbol);
am_append(ctx->am, EXPR, VAL);
break;
case TOKEN_TYPE_OPEN_PAREN:
am_push(ctx->am, EXPR);
@@ -75,9 +65,9 @@ parse_state_t parse_proc(parse_ctx_t *ctx, const token_t *token)
case TOKEN_TYPE_CLOSE_PAREN:
ctx->state = pop_state(ctx);
if (ctx->state == PARSE_STATE_LIST) {
expr_t *expr = AM_EXPR(ctx->am);
AM_VAL(ctx->am) = AM_EXPR(ctx->am);
am_pop(ctx->am, EXPR);
append(ctx, expr);
am_append(ctx->am, EXPR, VAL);
}
break;
}