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Diffstat (limited to 'src/scheme/ao_scheme_read.c')
-rw-r--r--src/scheme/ao_scheme_read.c74
1 files changed, 55 insertions, 19 deletions
diff --git a/src/scheme/ao_scheme_read.c b/src/scheme/ao_scheme_read.c
index 9ed54b9f..e93466fc 100644
--- a/src/scheme/ao_scheme_read.c
+++ b/src/scheme/ao_scheme_read.c
@@ -62,7 +62,7 @@ static const uint16_t lex_classes[128] = {
PRINTABLE|SPECIAL, /* ) */
PRINTABLE, /* * */
PRINTABLE|SIGN, /* + */
- PRINTABLE|SPECIAL, /* , */
+ PRINTABLE|SPECIAL_QUASI, /* , */
PRINTABLE|SIGN, /* - */
PRINTABLE|DOTC|FLOATC, /* . */
PRINTABLE, /* / */
@@ -114,7 +114,7 @@ static const uint16_t lex_classes[128] = {
PRINTABLE, /* ] */
PRINTABLE, /* ^ */
PRINTABLE, /* _ */
- PRINTABLE|SPECIAL, /* ` */
+ PRINTABLE|SPECIAL_QUASI, /* ` */
PRINTABLE, /* a */
PRINTABLE, /* b */
PRINTABLE, /* c */
@@ -244,12 +244,13 @@ lex_quoted(void)
}
}
+#ifndef AO_SCHEME_TOKEN_MAX
#define AO_SCHEME_TOKEN_MAX 128
+#endif
static char token_string[AO_SCHEME_TOKEN_MAX];
static int32_t token_int;
static int token_len;
-static float token_float;
static inline void add_token(int c) {
if (c && token_len < AO_SCHEME_TOKEN_MAX - 1)
@@ -265,6 +266,9 @@ static inline void end_token(void) {
token_string[token_len] = '\0';
}
+#ifdef AO_SCHEME_FEATURE_FLOAT
+static float token_float;
+
struct namedfloat {
const char *name;
float value;
@@ -278,6 +282,7 @@ static const struct namedfloat namedfloats[] = {
};
#define NUM_NAMED_FLOATS (sizeof namedfloats / sizeof namedfloats[0])
+#endif
static int
_lex(void)
@@ -315,6 +320,7 @@ _lex(void)
return QUOTE;
case '.':
return DOT;
+#ifdef AO_SCHEME_FEATURE_QUASI
case '`':
return QUASIQUOTE;
case ',':
@@ -327,6 +333,7 @@ _lex(void)
lex_unget(c);
return UNQUOTE;
}
+#endif
}
}
if (lex_class & POUND) {
@@ -340,8 +347,10 @@ _lex(void)
add_token(c);
end_token();
return BOOL;
+#ifdef AO_SCHEME_FEATURE_VECTOR
case '(':
return OPEN_VECTOR;
+#endif
case '\\':
for (;;) {
int alphabetic;
@@ -393,23 +402,23 @@ _lex(void)
}
}
if (lex_class & PRINTABLE) {
- int isfloat;
- int hasdigit;
- int isneg;
- int isint;
- int epos;
-
- isfloat = 1;
- isint = 1;
- hasdigit = 0;
+#ifdef AO_SCHEME_FEATURE_FLOAT
+ int isfloat = 1;
+ int epos = 0;
+#endif
+ int hasdigit = 0;
+ int isneg = 0;
+ int isint = 1;
+
token_int = 0;
- isneg = 0;
- epos = 0;
for (;;) {
if (!(lex_class & NUMBER)) {
isint = 0;
+#ifdef AO_SCHEME_FEATURE_FLOAT
isfloat = 0;
+#endif
} else {
+#ifdef AO_SCHEME_FEATURE_FLOAT
if (!(lex_class & INTEGER))
isint = 0;
if (token_len != epos &&
@@ -418,8 +427,10 @@ _lex(void)
isint = 0;
isfloat = 0;
}
+#endif
if (c == '-')
isneg = 1;
+#ifdef AO_SCHEME_FEATURE_FLOAT
if (c == '.' && epos != 0)
isfloat = 0;
if (c == 'e' || c == 'E') {
@@ -428,6 +439,7 @@ _lex(void)
else
epos = token_len + 1;
}
+#endif
if (lex_class & DIGIT) {
hasdigit = 1;
if (isint)
@@ -436,8 +448,14 @@ _lex(void)
}
add_token (c);
c = lexc ();
- if ((lex_class & (NOTNAME)) && (c != '.' || !isfloat)) {
+ if ((lex_class & (NOTNAME))
+#ifdef AO_SCHEME_FEATURE_FLOAT
+ && (c != '.' || !isfloat)
+#endif
+ ) {
+#ifdef AO_SCHEME_FEATURE_FLOAT
unsigned int u;
+#endif
// if (lex_class & ENDOFFILE)
// clearerr (f);
lex_unget(c);
@@ -447,6 +465,7 @@ _lex(void)
token_int = -token_int;
return NUM;
}
+#ifdef AO_SCHEME_FEATURE_FLOAT
if (isfloat && hasdigit) {
token_float = strtof(token_string, NULL);
return FLOAT;
@@ -456,6 +475,7 @@ _lex(void)
token_float = namedfloats[u].value;
return FLOAT;
}
+#endif
return NAME;
}
}
@@ -490,7 +510,7 @@ push_read_stack(int read_state)
RDBG_IN();
if (ao_scheme_read_list) {
ao_scheme_read_stack = ao_scheme_cons_cons(ao_scheme_cons_poly(ao_scheme_read_cons),
- ao_scheme__cons(ao_scheme_int_poly(read_state),
+ ao_scheme_cons(ao_scheme_int_poly(read_state),
ao_scheme_cons_poly(ao_scheme_read_stack)));
if (!ao_scheme_read_stack)
return 0;
@@ -525,11 +545,17 @@ pop_read_stack(void)
return read_state;
}
+#ifdef AO_SCHEME_FEATURE_VECTOR
+#define is_open(t) ((t) == OPEN || (t) == OPEN_VECTOR)
+#else
+#define is_open(t) ((t) == OPEN)
+#endif
+
ao_poly
ao_scheme_read(void)
{
struct ao_scheme_atom *atom;
- char *string;
+ struct ao_scheme_string *string;
int read_state;
ao_poly v = AO_SCHEME_NIL;
@@ -538,9 +564,11 @@ ao_scheme_read(void)
ao_scheme_read_cons = ao_scheme_read_cons_tail = ao_scheme_read_stack = 0;
for (;;) {
parse_token = lex();
- while (parse_token == OPEN || parse_token == OPEN_VECTOR) {
+ while (is_open(parse_token)) {
+#ifdef AO_SCHEME_FEATURE_VECTOR
if (parse_token == OPEN_VECTOR)
read_state |= READ_SAW_VECTOR;
+#endif
if (!push_read_stack(read_state))
return AO_SCHEME_NIL;
ao_scheme_read_list++;
@@ -565,9 +593,11 @@ ao_scheme_read(void)
case NUM:
v = ao_scheme_integer_poly(token_int);
break;
+#ifdef AO_SCHEME_FEATURE_FLOAT
case FLOAT:
v = ao_scheme_float_get(token_float);
break;
+#endif
case BOOL:
if (token_string[0] == 't')
v = _ao_scheme_bool_true;
@@ -575,16 +605,18 @@ ao_scheme_read(void)
v = _ao_scheme_bool_false;
break;
case STRING:
- string = ao_scheme_string_copy(token_string);
+ string = ao_scheme_string_make(token_string);
if (string)
v = ao_scheme_string_poly(string);
else
v = AO_SCHEME_NIL;
break;
case QUOTE:
+#ifdef AO_SCHEME_FEATURE_QUASI
case QUASIQUOTE:
case UNQUOTE:
case UNQUOTE_SPLICING:
+#endif
if (!push_read_stack(read_state))
return AO_SCHEME_NIL;
ao_scheme_read_list++;
@@ -593,6 +625,7 @@ ao_scheme_read(void)
case QUOTE:
v = _ao_scheme_atom_quote;
break;
+#ifdef AO_SCHEME_FEATURE_QUASI
case QUASIQUOTE:
v = _ao_scheme_atom_quasiquote;
break;
@@ -602,6 +635,7 @@ ao_scheme_read(void)
case UNQUOTE_SPLICING:
v = _ao_scheme_atom_unquote2dsplicing;
break;
+#endif
}
break;
case CLOSE:
@@ -612,8 +646,10 @@ ao_scheme_read(void)
v = ao_scheme_cons_poly(ao_scheme_read_cons);
--ao_scheme_read_list;
read_state = pop_read_stack();
+#ifdef AO_SCHEME_FEATURE_VECTOR
if (read_state & READ_SAW_VECTOR)
v = ao_scheme_vector_poly(ao_scheme_list_to_vector(ao_scheme_poly_cons(v)));
+#endif
break;
case DOT:
if (!ao_scheme_read_list) {
generated by cgit v1.2.3 (git 2.39.1) at 2025-10-15 19:45:55 +0000