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No commits in common. "71056896ac6c963f8590795e1d41b2dd679025b9" and "13b4b8a5f5670d38eae095749ddbba734ac2df89" have entirely different histories.
71056896ac ... 13b4b8a5f5

6 changed files with 49 additions and 76 deletions
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15
.clang-format
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@ -1,15 +0,0 @@
BasedOnStyle: GNU
ColumnLimit: 80
IndentWidth: 4
TabWidth: 4
UseTab: ForContinuationAndIndentation
BreakBeforeBraces: Attach
BreakBeforeBinaryOperators: None
SpaceAfterCStyleCast: true
AlignAfterOpenBracket: DontAlign
AlignEscapedNewlines: DontAlign
AlignOperands: DontAlign
AlignConsecutiveMacros: Consecutive
AllowAllArgumentsOnNextLine: false
AllowAllParametersOfDeclarationOnNextLine: false
IndentGotoLabels: false

2
.gitignore vendored
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@ -9,5 +9,3 @@
/ell.files
/ell.creator*
/ell.includes
/ell.cflags
/ell.cxxflags

101
ell.c
View File

@ -16,14 +16,14 @@
*
*/
#include <ctype.h>
#include <errno.h>
#include <setjmp.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <errno.h>
#include <stdarg.h>
#include <stdbool.h>
#include <setjmp.h>
#if defined __GNUC__
#define ELL_ATTRIBUTE_PRINTF(x, y) __attribute__ ((format (printf, x, y)))
@ -188,18 +188,9 @@ ell_list (struct ell_v *head) {
// --- Lexer -------------------------------------------------------------------
enum ell_token {
ELLT_ABORT,
ELLT_LPAREN,
ELLT_RPAREN,
ELLT_LBRACKET,
ELLT_RBRACKET,
ELLT_LBRACE,
ELLT_RBRACE,
ELLT_STRING,
ELLT_NEWLINE,
ELLT_AT
};
enum ell_token { ELLT_ABORT, ELLT_LPAREN, ELLT_RPAREN,
ELLT_LBRACKET, ELLT_RBRACKET, ELLT_LBRACE, ELLT_RBRACE,
ELLT_STRING, ELLT_NEWLINE, ELLT_AT };
static const char *ell_token_names[] = {
[ELLT_ABORT] = "end of input",
@ -249,8 +240,8 @@ ell_lexer_advance (struct ell_lexer *self) {
static bool
ell_lexer_hexa_escape (struct ell_lexer *self, struct ell_buffer *output) {
const char *abc = "0123456789abcdef", *h, *l;
if (!self->len || !(h = strchr (abc, tolower (ell_lexer_advance (self)))) ||
!self->len || !(l = strchr (abc, tolower (ell_lexer_advance (self)))))
if (!self->len || !(h = strchr (abc, tolower (ell_lexer_advance (self))))
|| !self->len || !(l = strchr (abc, tolower (ell_lexer_advance (self)))))
return false;
ell_buffer_append_c (output, (h - abc) << 4 | (l - abc));
@ -263,8 +254,7 @@ enum {
ELL_LEXER_COMMENT = '#'
};
static bool
ell_lexer_is_whitespace (int c) {
static bool ell_lexer_is_whitespace (int c) {
return !c || c == ' ' || c == '\t' || c == '\r';
}
@ -336,12 +326,13 @@ ell_lexer_next (struct ell_lexer *self, const char **e) {
enum ell_token token = ell_lexer_tokens[c];
if (!token) {
ell_buffer_append_c (&self->string, c);
while (self->len && !ell_lexer_is_whitespace (*self->p) &&
!ell_lexer_tokens[*self->p])
while (self->len && !ell_lexer_is_whitespace (*self->p)
&& !ell_lexer_tokens[*self->p])
ell_buffer_append_c (&self->string, ell_lexer_advance (self));
return ELLT_STRING;
}
if (token == ELLT_STRING && (*e = ell_lexer_string (self, &self->string)))
if (token == ELLT_STRING
&& (*e = ell_lexer_string (self, &self->string)))
return ELLT_ABORT;
return token;
}
@ -378,8 +369,8 @@ static bool
ell_print_string_needs_quoting (struct ell_v *s) {
for (size_t i = 0; i < s->len; i++) {
unsigned char c = s->string[i];
if (ell_lexer_is_whitespace (c) || ell_lexer_tokens[c] ||
c == ELL_LEXER_ESCAPE || c < 32)
if (ell_lexer_is_whitespace (c) || ell_lexer_tokens[c]
|| c == ELL_LEXER_ESCAPE || c < 32)
return true;
}
return s->len == 0;
@ -435,8 +426,8 @@ ell_print_block (struct ell_printer *printer, struct ell_v *list) {
static bool
ell_print_set (struct ell_printer *printer, struct ell_v *list) {
if (!list->head || strcmp (list->head->string, "set") ||
!list->head->next || list->head->next->next)
if (!list->head || strcmp (list->head->string, "set")
|| !list->head->next || list->head->next->next)
return false;
printer->putchar (printer, '@');
@ -457,10 +448,10 @@ ell_print_list (struct ell_printer *printer, struct ell_v *list) {
static void
ell_print_v (struct ell_printer *printer, struct ell_v *v) {
if (ell_print_string (printer, v) ||
ell_print_block (printer, v) ||
ell_print_set (printer, v) ||
ell_print_list (printer, v))
if (ell_print_string (printer, v)
|| ell_print_block (printer, v)
|| ell_print_set (printer, v)
|| ell_print_list (printer, v))
return;
printer->putchar (printer, '(');
@ -572,7 +563,7 @@ ell_parse_prefix_list (struct ell_v *seq, const char *name) {
return ell_list (prefix);
}
static struct ell_v *ell_parse_line (struct ell_parser *p, jmp_buf out);
static struct ell_v * ell_parse_line (struct ell_parser *p, jmp_buf out);
static struct ell_v *
ell_parse_v (struct ell_parser *p, jmp_buf out) {
@ -585,7 +576,8 @@ ell_parse_v (struct ell_parser *p, jmp_buf out) {
SKIP_NL ();
if (ACCEPT (ELLT_STRING))
return CHECK (ell_string (p->lexer.string.s, p->lexer.string.len));
return CHECK (ell_string
(p->lexer.string.s, p->lexer.string.len));
if (ACCEPT (ELLT_AT)) {
result = ell_parse_v (p, out);
return CHECK (ell_parse_prefix_list (result, "set"));
@ -714,8 +706,8 @@ static bool
ell_scope_prepend (struct ell *ell, struct ell_v **scope, const char *name,
struct ell_v *v) {
struct ell_v *key, *pair;
if (!ell_check (ell, (key = ell_string (name, strlen (name)))) ||
!ell_check (ell, (pair = ell_list (key)))) {
if (!ell_check (ell, (key = ell_string (name, strlen (name))))
|| !ell_check (ell, (pair = ell_list (key)))) {
ell_free_seq (v);
return false;
}
@ -814,8 +806,8 @@ ell_eval_args (struct ell *ell,
for (; args; args = args->next) {
struct ell_v *evaluated = NULL;
// Arguments should not evaporate, default to a nil value
if (!ell_eval_statement (ell, args, &evaluated) ||
(!evaluated && !ell_check (ell, (evaluated = ell_list (NULL)))))
if (!ell_eval_statement (ell, args, &evaluated)
|| (!evaluated && !ell_check (ell, (evaluated = ell_list (NULL)))))
goto error;
ell_free_seq (evaluated->next);
evaluated->next = NULL;
@ -897,14 +889,15 @@ ell_eval_value (struct ell *ell, const struct ell_v *body,
}
static bool
ell_eval_statement (struct ell *ell, const struct ell_v *statement,
struct ell_v **result) {
ell_eval_statement
(struct ell *ell, const struct ell_v *statement, struct ell_v **result) {
if (statement->type == ELL_STRING)
return ell_check (ell, (*result = ell_clone (statement)));
// Executing a nil value results in no value. It's not very different from
// calling a block that returns no value--it's for our callers to resolve.
if (!statement->head || ell_eval_value (ell, statement->head, result))
if (!statement->head
|| ell_eval_value (ell, statement->head, result))
return true;
ell_free_seq (*result);
@ -925,8 +918,8 @@ ell_eval_statement (struct ell *ell, const struct ell_v *statement,
static bool
args_to_scope (struct ell *ell, struct ell_v *args, struct ell_v **scope) {
if (!ell_check (ell, (args = ell_list (args))) ||
!ell_scope_prepend (ell, scope, "args", args))
if (!ell_check (ell, (args = ell_list (args)))
|| !ell_scope_prepend (ell, scope, "args", args))
return false;
size_t i = 0;
@ -934,8 +927,8 @@ args_to_scope (struct ell *ell, struct ell_v *args, struct ell_v **scope) {
char buf[16] = "";
(void) snprintf (buf, sizeof buf, "%zu", ++i);
struct ell_v *copy = NULL;
if ((args && !ell_check (ell, (copy = ell_clone (args)))) ||
!ell_scope_prepend (ell, scope, buf, copy))
if ((args && !ell_check (ell, (copy = ell_clone (args))))
|| !ell_scope_prepend (ell, scope, buf, copy))
return false;
}
return ell_check (ell, (*scope = ell_list (*scope)));
@ -1038,8 +1031,8 @@ ell_defn (ell_fn_local) {
struct ell_v *values = names->next;
for (names = names->head; names; names = names->next) {
struct ell_v *value = NULL;
if ((values && !ell_check (ell, (value = ell_clone (values)))) ||
!ell_scope_prepend (ell, scope, names->string, value))
if ((values && !ell_check (ell, (value = ell_clone (values))))
|| !ell_scope_prepend (ell, scope, names->string, value))
return false;
if (values)
values = values->next;
@ -1054,9 +1047,9 @@ ell_defn (ell_fn_set) {
struct ell_v *v;
if ((v = name->next))
return ell_check (ell, (v = ell_clone (v))) &&
ell_check (ell, (*result = ell_clone (v))) &&
ell_set (ell, name->string, v);
return ell_check (ell, (v = ell_clone (v)))
&& ell_check (ell, (*result = ell_clone (v)))
&& ell_set (ell, name->string, v);
// We return an empty list for a nil value
if (!(v = ell_get (ell, name->string)))
@ -1146,8 +1139,8 @@ ell_defn (ell_fn_cat) {
else
ell_buffer_append (&buf, args->string, args->len);
}
bool ok = !(ell->memory_failure |= buf.memory_failure) &&
ell_check (ell, (*result = ell_string (buf.s, buf.len)));
bool ok = !(ell->memory_failure |= buf.memory_failure)
&& ell_check (ell, (*result = ell_string (buf.s, buf.len)));
free (buf.s);
return ok;
}
@ -1185,8 +1178,8 @@ ell_defn (ell_fn_try) {
return true;
struct ell_v *msg;
if (ell->memory_failure ||
!ell_check (ell, (msg = ell_string (ell->error, strlen (ell->error)))))
if (ell->memory_failure
|| !ell_check (ell, (msg = ell_string (ell->error, strlen (ell->error)))))
return false;
free (ell->error); ell->error = NULL;

4
go.mod
View File

@ -1,7 +1,3 @@
module janouch.name/ell
go 1.17
require github.com/peterh/liner v1.1.0
require github.com/mattn/go-runewidth v0.0.3 // indirect

1
interpreter.c
View File

@ -65,3 +65,4 @@ main (int argc, char *argv[]) {
ell_free (&ell);
return 0;
}

2
repl.c
View File

@ -17,8 +17,8 @@
*/
#include "ell.c"
#include <readline/history.h>
#include <readline/readline.h>
#include <readline/history.h>
static void
run (struct ell *ell, struct ell_v *program) {