/*
* Copyright 2008-2009 Katholieke Universiteit Leuven
*
- * Use of this software is governed by the GNU LGPLv2.1 license
+ * Use of this software is governed by the MIT license
*
* Written by Sven Verdoolaege, K.U.Leuven, Departement
* Computerwetenschappen, Celestijnenlaan 200A, B-3001 Leuven, Belgium
#include <ctype.h>
#include <string.h>
#include <strings.h>
-#include <isl_ctx.h>
-#include "isl_stream.h"
+#include <isl/ctx.h>
+#include <isl_stream_private.h>
+#include <isl/map.h>
+#include <isl/aff.h>
-static struct isl_token *isl_token_new(struct isl_ctx *ctx,
+struct isl_keyword {
+ char *name;
+ enum isl_token_type type;
+};
+
+static int same_name(const void *entry, const void *val)
+{
+ const struct isl_keyword *keyword = (const struct isl_keyword *)entry;
+
+ return !strcmp(keyword->name, val);
+}
+
+enum isl_token_type isl_stream_register_keyword(struct isl_stream *s,
+ const char *name)
+{
+ struct isl_hash_table_entry *entry;
+ struct isl_keyword *keyword;
+ uint32_t name_hash;
+
+ if (!s->keywords) {
+ s->keywords = isl_hash_table_alloc(s->ctx, 10);
+ if (!s->keywords)
+ return ISL_TOKEN_ERROR;
+ s->next_type = ISL_TOKEN_LAST;
+ }
+
+ name_hash = isl_hash_string(isl_hash_init(), name);
+
+ entry = isl_hash_table_find(s->ctx, s->keywords, name_hash,
+ same_name, name, 1);
+ if (!entry)
+ return ISL_TOKEN_ERROR;
+ if (entry->data) {
+ keyword = entry->data;
+ return keyword->type;
+ }
+
+ keyword = isl_calloc_type(s->ctx, struct isl_keyword);
+ if (!keyword)
+ return ISL_TOKEN_ERROR;
+ keyword->type = s->next_type++;
+ keyword->name = strdup(name);
+ if (!keyword->name) {
+ free(keyword);
+ return ISL_TOKEN_ERROR;
+ }
+ entry->data = keyword;
+
+ return keyword->type;
+}
+
+struct isl_token *isl_token_new(isl_ctx *ctx,
int line, int col, unsigned on_new_line)
{
struct isl_token *tok = isl_alloc_type(ctx, struct isl_token);
tok->line = line;
tok->col = col;
tok->on_new_line = on_new_line;
+ tok->is_keyword = 0;
+ tok->u.s = NULL;
return tok;
}
return;
if (tok->type == ISL_TOKEN_VALUE)
isl_int_clear(tok->u.v);
- else if (tok->type == ISL_TOKEN_IDENT)
+ else if (tok->type == ISL_TOKEN_MAP)
+ isl_map_free(tok->u.map);
+ else if (tok->type == ISL_TOKEN_AFF)
+ isl_pw_aff_free(tok->u.pwaff);
+ else
free(tok->u.s);
free(tok);
}
if (tok) {
if (tok->type < 256)
fprintf(stderr, "got '%c'\n", tok->type);
+ else if (tok->type == ISL_TOKEN_IDENT)
+ fprintf(stderr, "got ident '%s'\n", tok->u.s);
+ else if (tok->is_keyword)
+ fprintf(stderr, "got keyword '%s'\n", tok->u.s);
+ else if (tok->type == ISL_TOKEN_VALUE) {
+ fprintf(stderr, "got value '");
+ isl_int_print(stderr, tok->u.v, 0);
+ fprintf(stderr, "'\n");
+ } else if (tok->type == ISL_TOKEN_MAP) {
+ isl_printer *p;
+ fprintf(stderr, "got map '");
+ p = isl_printer_to_file(s->ctx, stderr);
+ p = isl_printer_print_map(p, tok->u.map);
+ isl_printer_free(p);
+ fprintf(stderr, "'\n");
+ } else if (tok->type == ISL_TOKEN_AFF) {
+ isl_printer *p;
+ fprintf(stderr, "got affine expression '");
+ p = isl_printer_to_file(s->ctx, stderr);
+ p = isl_printer_print_pw_aff(p, tok->u.pwaff);
+ isl_printer_free(p);
+ fprintf(stderr, "'\n");
+ } else if (tok->u.s)
+ fprintf(stderr, "got token '%s'\n", tok->u.s);
else
fprintf(stderr, "got token type %d\n", tok->type);
}
return NULL;
s->ctx = ctx;
isl_ctx_ref(s->ctx);
- s->size = 256;
s->file = NULL;
s->str = NULL;
- s->buffer = isl_alloc_array(ctx, char, s->size);
- if (!s->buffer)
- goto error;
s->len = 0;
s->line = 1;
s->col = 0;
s->eof = 0;
s->c = -1;
+ s->n_un = 0;
for (i = 0; i < 5; ++i)
s->tokens[i] = NULL;
s->n_token = 0;
+ s->keywords = NULL;
+ s->size = 256;
+ s->buffer = isl_alloc_array(ctx, char, s->size);
+ if (!s->buffer)
+ goto error;
return s;
error:
isl_stream_free(s);
struct isl_stream* isl_stream_new_str(struct isl_ctx *ctx, const char *str)
{
- struct isl_stream *s = isl_stream_new(ctx);
- s->str = str;
- return s;
+ struct isl_stream *s;
+ if (!str)
+ return NULL;
+ s = isl_stream_new(ctx);
+ if (!s)
+ return NULL;
+ s->str = str;
+ return s;
}
-static int isl_stream_getc(struct isl_stream *s)
+static int stream_getc(struct isl_stream *s)
{
int c;
if (s->eof)
return -1;
+ if (s->n_un)
+ return s->c = s->un[--s->n_un];
if (s->file)
c = fgetc(s->file);
else {
static void isl_stream_ungetc(struct isl_stream *s, int c)
{
- if (s->file)
- ungetc(c, s->file);
- else
- --s->str;
+ isl_assert(s->ctx, s->n_un < 5, return);
+ s->un[s->n_un++] = c;
s->c = -1;
}
+static int isl_stream_getc(struct isl_stream *s)
+{
+ int c;
+
+ do {
+ c = stream_getc(s);
+ if (c != '\\')
+ return c;
+ c = stream_getc(s);
+ } while (c == '\n');
+
+ isl_stream_ungetc(s, c);
+
+ return '\\';
+}
+
static int isl_stream_push_char(struct isl_stream *s, int c)
{
if (s->len >= s->size) {
+ char *buffer;
s->size = (3*s->size)/2;
- s->buffer = isl_realloc_array(ctx, s->buffer, char, s->size);
- if (!s->buffer)
+ buffer = isl_realloc_array(s->ctx, s->buffer, char, s->size);
+ if (!buffer)
return -1;
+ s->buffer = buffer;
}
s->buffer[s->len++] = c;
return 0;
s->tokens[s->n_token++] = tok;
}
+static enum isl_token_type check_keywords(struct isl_stream *s)
+{
+ struct isl_hash_table_entry *entry;
+ struct isl_keyword *keyword;
+ uint32_t name_hash;
+
+ if (!strcasecmp(s->buffer, "exists"))
+ return ISL_TOKEN_EXISTS;
+ if (!strcasecmp(s->buffer, "and"))
+ return ISL_TOKEN_AND;
+ if (!strcasecmp(s->buffer, "or"))
+ return ISL_TOKEN_OR;
+ if (!strcasecmp(s->buffer, "not"))
+ return ISL_TOKEN_NOT;
+ if (!strcasecmp(s->buffer, "infty"))
+ return ISL_TOKEN_INFTY;
+ if (!strcasecmp(s->buffer, "infinity"))
+ return ISL_TOKEN_INFTY;
+ if (!strcasecmp(s->buffer, "NaN"))
+ return ISL_TOKEN_NAN;
+ if (!strcasecmp(s->buffer, "min"))
+ return ISL_TOKEN_MIN;
+ if (!strcasecmp(s->buffer, "max"))
+ return ISL_TOKEN_MAX;
+ if (!strcasecmp(s->buffer, "rat"))
+ return ISL_TOKEN_RAT;
+ if (!strcasecmp(s->buffer, "true"))
+ return ISL_TOKEN_TRUE;
+ if (!strcasecmp(s->buffer, "false"))
+ return ISL_TOKEN_FALSE;
+ if (!strcasecmp(s->buffer, "ceild"))
+ return ISL_TOKEN_CEILD;
+ if (!strcasecmp(s->buffer, "floord"))
+ return ISL_TOKEN_FLOORD;
+ if (!strcasecmp(s->buffer, "mod"))
+ return ISL_TOKEN_MOD;
+
+ if (!s->keywords)
+ return ISL_TOKEN_IDENT;
+
+ name_hash = isl_hash_string(isl_hash_init(), s->buffer);
+ entry = isl_hash_table_find(s->ctx, s->keywords, name_hash, same_name,
+ s->buffer, 0);
+ if (entry) {
+ keyword = entry->data;
+ return keyword->type;
+ }
+
+ return ISL_TOKEN_IDENT;
+}
+
+int isl_stream_skip_line(struct isl_stream *s)
+{
+ int c;
+
+ while ((c = isl_stream_getc(s)) != -1 && c != '\n')
+ /* nothing */
+ ;
+
+ return c == -1 ? -1 : 0;
+}
+
static struct isl_token *next_token(struct isl_stream *s, int same_line)
{
int c;
/* skip spaces and comment lines */
while ((c = isl_stream_getc(s)) != -1) {
if (c == '#') {
- while ((c = isl_stream_getc(s)) != -1 && c != '\n')
- /* nothing */
- ;
- if (c == -1 || (same_line && c == '\n'))
+ if (isl_stream_skip_line(s) < 0)
+ break;
+ c = '\n';
+ if (same_line)
break;
} else if (!isspace(c) || (same_line && c == '\n'))
break;
if (c == '(' ||
c == ')' ||
c == '+' ||
- c == '/' ||
c == '*' ||
+ c == '%' ||
+ c == '?' ||
c == '^' ||
- c == '=' ||
+ c == '@' ||
+ c == '$' ||
c == ',' ||
+ c == '.' ||
c == ';' ||
c == '[' ||
c == ']' ||
tok = isl_token_new(s->ctx, line, col, old_line != line);
if (!tok)
return NULL;
+ tok->u.s = strdup("->");
tok->type = ISL_TOKEN_TO;
return tok;
}
}
}
if (c == '-' || isdigit(c)) {
+ int minus = c == '-';
tok = isl_token_new(s->ctx, line, col, old_line != line);
if (!tok)
return NULL;
isl_stream_ungetc(s, c);
isl_stream_push_char(s, '\0');
isl_int_read(tok->u.v, s->buffer);
+ if (minus && isl_int_is_zero(tok->u.v)) {
+ tok->col++;
+ tok->on_new_line = 0;
+ isl_stream_push_token(s, tok);
+ tok = isl_token_new(s->ctx, line, col, old_line != line);
+ if (!tok)
+ return NULL;
+ tok->type = (enum isl_token_type) '-';
+ }
return tok;
}
- if (isalpha(c)) {
+ if (isalpha(c) || c == '_') {
tok = isl_token_new(s->ctx, line, col, old_line != line);
if (!tok)
return NULL;
isl_stream_push_char(s, c);
- while ((c = isl_stream_getc(s)) != -1 && isalnum(c))
+ while ((c = isl_stream_getc(s)) != -1 &&
+ (isalnum(c) || c == '_'))
isl_stream_push_char(s, c);
if (c != -1)
isl_stream_ungetc(s, c);
if (c != -1)
isl_stream_ungetc(s, c);
isl_stream_push_char(s, '\0');
- if (!strcasecmp(s->buffer, "exists"))
- tok->type = ISL_TOKEN_EXISTS;
- else if (!strcasecmp(s->buffer, "and"))
- tok->type = ISL_TOKEN_AND;
- else if (!strcasecmp(s->buffer, "or"))
- tok->type = ISL_TOKEN_OR;
- else {
- tok->type = ISL_TOKEN_IDENT;
- tok->u.s = strdup(s->buffer);
+ tok->type = check_keywords(s);
+ if (tok->type != ISL_TOKEN_IDENT)
+ tok->is_keyword = 1;
+ tok->u.s = strdup(s->buffer);
+ if (!tok->u.s)
+ goto error;
+ return tok;
+ }
+ if (c == '"') {
+ tok = isl_token_new(s->ctx, line, col, old_line != line);
+ if (!tok)
+ return NULL;
+ tok->type = ISL_TOKEN_STRING;
+ tok->u.s = NULL;
+ while ((c = isl_stream_getc(s)) != -1 && c != '"' && c != '\n')
+ isl_stream_push_char(s, c);
+ if (c != '"') {
+ isl_stream_error(s, NULL, "unterminated string");
+ goto error;
+ }
+ isl_stream_push_char(s, '\0');
+ tok->u.s = strdup(s->buffer);
+ return tok;
+ }
+ if (c == '=') {
+ int c;
+ tok = isl_token_new(s->ctx, line, col, old_line != line);
+ if (!tok)
+ return NULL;
+ if ((c = isl_stream_getc(s)) == '=') {
+ tok->u.s = strdup("==");
+ tok->type = ISL_TOKEN_EQ_EQ;
+ return tok;
}
+ if (c != -1)
+ isl_stream_ungetc(s, c);
+ tok->type = (enum isl_token_type) '=';
return tok;
}
if (c == ':') {
if (!tok)
return NULL;
if ((c = isl_stream_getc(s)) == '=') {
+ tok->u.s = strdup(":=");
tok->type = ISL_TOKEN_DEF;
return tok;
}
if (c != -1)
isl_stream_ungetc(s, c);
- tok->type = ':';
+ tok->type = (enum isl_token_type) ':';
return tok;
}
if (c == '>') {
if (!tok)
return NULL;
if ((c = isl_stream_getc(s)) == '=') {
+ tok->u.s = strdup(">=");
tok->type = ISL_TOKEN_GE;
return tok;
+ } else if (c == '>') {
+ if ((c = isl_stream_getc(s)) == '=') {
+ tok->u.s = strdup(">>=");
+ tok->type = ISL_TOKEN_LEX_GE;
+ return tok;
+ }
+ tok->u.s = strdup(">>");
+ tok->type = ISL_TOKEN_LEX_GT;
+ } else {
+ tok->u.s = strdup(">");
+ tok->type = ISL_TOKEN_GT;
}
if (c != -1)
isl_stream_ungetc(s, c);
- tok->type = ISL_TOKEN_GT;
return tok;
}
if (c == '<') {
if (!tok)
return NULL;
if ((c = isl_stream_getc(s)) == '=') {
+ tok->u.s = strdup("<=");
tok->type = ISL_TOKEN_LE;
return tok;
+ } else if (c == '<') {
+ if ((c = isl_stream_getc(s)) == '=') {
+ tok->u.s = strdup("<<=");
+ tok->type = ISL_TOKEN_LEX_LE;
+ return tok;
+ }
+ tok->u.s = strdup("<<");
+ tok->type = ISL_TOKEN_LEX_LT;
+ } else {
+ tok->u.s = strdup("<");
+ tok->type = ISL_TOKEN_LT;
}
if (c != -1)
isl_stream_ungetc(s, c);
- tok->type = ISL_TOKEN_LT;
return tok;
}
if (c == '&') {
if (!tok)
return NULL;
tok->type = ISL_TOKEN_AND;
- if ((c = isl_stream_getc(s)) != '&' && c != -1)
+ if ((c = isl_stream_getc(s)) != '&' && c != -1) {
+ tok->u.s = strdup("&");
isl_stream_ungetc(s, c);
+ } else
+ tok->u.s = strdup("&&");
return tok;
}
if (c == '|') {
if (!tok)
return NULL;
tok->type = ISL_TOKEN_OR;
- if ((c = isl_stream_getc(s)) != '|' && c != -1)
+ if ((c = isl_stream_getc(s)) != '|' && c != -1) {
+ tok->u.s = strdup("|");
+ isl_stream_ungetc(s, c);
+ } else
+ tok->u.s = strdup("||");
+ return tok;
+ }
+ if (c == '/') {
+ tok = isl_token_new(s->ctx, line, col, old_line != line);
+ if (!tok)
+ return NULL;
+ if ((c = isl_stream_getc(s)) != '\\' && c != -1) {
+ tok->type = (enum isl_token_type) '/';
+ isl_stream_ungetc(s, c);
+ } else {
+ tok->u.s = strdup("/\\");
+ tok->type = ISL_TOKEN_AND;
+ }
+ return tok;
+ }
+ if (c == '\\') {
+ tok = isl_token_new(s->ctx, line, col, old_line != line);
+ if (!tok)
+ return NULL;
+ if ((c = isl_stream_getc(s)) != '/' && c != -1) {
+ tok->type = (enum isl_token_type) '\\';
+ isl_stream_ungetc(s, c);
+ } else {
+ tok->u.s = strdup("\\/");
+ tok->type = ISL_TOKEN_OR;
+ }
+ return tok;
+ }
+ if (c == '!') {
+ tok = isl_token_new(s->ctx, line, col, old_line != line);
+ if (!tok)
+ return NULL;
+ if ((c = isl_stream_getc(s)) == '=') {
+ tok->u.s = strdup("!=");
+ tok->type = ISL_TOKEN_NE;
+ return tok;
+ } else {
+ tok->type = ISL_TOKEN_NOT;
+ tok->u.s = strdup("!");
+ }
+ if (c != -1)
isl_stream_ungetc(s, c);
return tok;
}
return 0;
}
+static int free_keyword(void **p, void *user)
+{
+ struct isl_keyword *keyword = *p;
+
+ free(keyword->name);
+ free(keyword);
+
+ return 0;
+}
+
+void isl_stream_flush_tokens(struct isl_stream *s)
+{
+ int i;
+
+ if (!s)
+ return;
+ for (i = 0; i < s->n_token; ++i)
+ isl_token_free(s->tokens[i]);
+ s->n_token = 0;
+}
+
void isl_stream_free(struct isl_stream *s)
{
if (!s)
isl_stream_error(s, tok, "unexpected token");
isl_token_free(tok);
}
+ if (s->keywords) {
+ isl_hash_table_foreach(s->ctx, s->keywords, &free_keyword, NULL);
+ isl_hash_table_free(s->ctx, s->keywords);
+ }
isl_ctx_deref(s->ctx);
free(s);
}
projects / platform / upstream / isl.git / blobdiff