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context sensitivity

This commit is contained in:
Lev Walkin 2005-02-18 18:06:36 +00:00
parent 6ab8896515
commit 1e4439612f
9 changed files with 30 additions and 22 deletions
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2
skeletons/BOOLEAN.c
View File

@ -146,7 +146,7 @@ BOOLEAN__xer_body_decode(void *sptr, void *chunk_buf, size_t chunk_size) {
/* "<false/>" */
*st = 0;
break;
case XCT_UNEXPECTED:
case XCT_UNKNOWN_BO:
if(xer_check_tag(chunk_buf, chunk_size, "true")
!= XCT_BOTH)
return -1;

3
skeletons/constr_CHOICE.c
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@ -639,7 +639,7 @@ CHOICE_decode_xer(asn_codec_ctx_t *opt_codec_ctx, asn_TYPE_descriptor_t *td,
/*
* Get the next part of the XML stream.
*/
ch_size = xer_next_token(buf_ptr, size, &ch_type);
ch_size = xer_next_token(&ctx->context, buf_ptr, size, &ch_type);
switch(ch_size) {
case -1: RETURN(RC_FAIL);
case 0: RETURN(RC_WMORE);
@ -667,6 +667,7 @@ CHOICE_decode_xer(asn_codec_ctx_t *opt_codec_ctx, asn_TYPE_descriptor_t *td,
continue;
case 1:
ctx->phase = 3;
/* Fall through */
case 0:
XER_ADVANCE(ch_size);
continue;

3
skeletons/constr_SEQUENCE.c
View File

@ -689,7 +689,8 @@ SEQUENCE_decode_xer(asn_codec_ctx_t *opt_codec_ctx, asn_TYPE_descriptor_t *td,
/*
* Get the next part of the XML stream.
*/
ch_size = xer_next_token(buf_ptr, size, &ch_type);
ch_size = xer_next_token(&ctx->context, buf_ptr, size,
&ch_type);
switch(ch_size) {
case -1: RETURN(RC_FAIL);
case 0: RETURN(RC_WMORE);

10
skeletons/constr_SET.c
View File

@ -671,7 +671,8 @@ SET_decode_xer(asn_codec_ctx_t *opt_codec_ctx, asn_TYPE_descriptor_t *td,
/*
* Get the next part of the XML stream.
*/
ch_size = xer_next_token(buf_ptr, size, &ch_type);
ch_size = xer_next_token(&ctx->context,
buf_ptr, size, &ch_type);
switch(ch_size) {
case -1: RETURN(RC_FAIL);
case 0: RETURN(RC_WMORE);
@ -695,13 +696,12 @@ SET_decode_xer(asn_codec_ctx_t *opt_codec_ctx, asn_TYPE_descriptor_t *td,
case -1:
ctx->phase = 4;
RETURN(RC_FAIL);
case 1:
ctx->phase = 1;
/* Fall through */
case 0:
XER_ADVANCE(ch_size);
continue;
case 1:
XER_ADVANCE(ch_size);
ctx->phase = 1;
continue;
case 2:
ctx->phase = 1;
break;

3
skeletons/constr_SET_OF.c
View File

@ -536,7 +536,8 @@ SET_OF_decode_xer(asn_codec_ctx_t *opt_codec_ctx, asn_TYPE_descriptor_t *td,
/*
* Get the next part of the XML stream.
*/
ch_size = xer_next_token(buf_ptr, size, &ch_type);
ch_size = xer_next_token(&ctx->context,
buf_ptr, size, &ch_type);
switch(ch_size) {
case -1: RETURN(RC_FAIL);
case 0: RETURN(RC_WMORE);

7
skeletons/constr_TYPE.h
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@ -23,10 +23,11 @@ struct asn_TYPE_member_s; /* Forward declaration */
* included into certain target language's structures, such as compound types.
*/
typedef struct asn_struct_ctx_s {
int phase; /* Decoding phase */
int step; /* Elementary step of a phase */
ber_tlv_len_t left; /* Number of bytes left, -1 for indefinite */
short phase; /* Decoding phase */
short step; /* Elementary step of a phase */
int context; /* Other context information */
void *ptr; /* Decoder-specific stuff (stack elements) */
ber_tlv_len_t left; /* Number of bytes left, -1 for indefinite */
} asn_struct_ctx_t;
#include <ber_decoder.h> /* Basic Encoding Rules decoder */

3
skeletons/tests/check-XER.c
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@ -17,10 +17,11 @@ check_next(char *xerbuf, int expected_chunk_size, pxer_chunk_type_e expected_chu
int xerbuf_len = strlen(xerbuf);
pxer_chunk_type_e ch_type;
ssize_t ch_size;
int state = 0;
if(expected_chunk_size == -1)
expected_chunk_size = xerbuf_len;
ch_size = xer_next_token(xerbuf, xerbuf_len, &ch_type);
ch_size = xer_next_token(&state, xerbuf, xerbuf_len, &ch_type);
printf("[%s]:%d\n", xerbuf, xerbuf_len);
printf("chunk sizes: %d vs %d, chunk types: %d vs %d\n",

18
skeletons/xer_decoder.c
View File

@ -51,13 +51,13 @@ xer__token_cb(pxml_chunk_type_e type, void *_chunk_data, size_t _chunk_size, voi
* Fetch the next token from the XER/XML stream.
*/
ssize_t
xer_next_token(void *buffer, size_t size, pxer_chunk_type_e *ch_type) {
xer_next_token(int *stateContext, void *buffer, size_t size, pxer_chunk_type_e *ch_type) {
struct xer__cb_arg arg;
int stateContext = 0;
int new_stateContext = *stateContext;
ssize_t ret;
arg.callback_not_invoked = 1;
ret = pxml_parse(&stateContext, buffer, size, xer__token_cb, &arg);
ret = pxml_parse(&new_stateContext, buffer, size, xer__token_cb, &arg);
if(ret < 0) return -1;
if(arg.callback_not_invoked) {
assert(ret == 0); /* No data was consumed */
@ -65,7 +65,6 @@ xer_next_token(void *buffer, size_t size, pxer_chunk_type_e *ch_type) {
} else {
assert(arg.chunk_size);
assert(arg.chunk_buf == buffer);
assert(stateContext == 0);
}
/*
@ -85,6 +84,7 @@ xer_next_token(void *buffer, size_t size, pxer_chunk_type_e *ch_type) {
break;
}
*stateContext = new_stateContext;
return arg.chunk_size;
}
@ -136,13 +136,13 @@ xer_check_tag(const void *buf_ptr, int size, const char *need_tag) {
return ct;
}
}
return (XCT__UNK__MASK | ct);
return (xer_check_tag_e)(XCT__UNK__MASK | ct);
}
if(b == 0)
return XCT_BROKEN; /* Embedded 0 in buf?! */
}
if(*need_tag)
return (XCT__UNK__MASK | ct);
return (xer_check_tag_e)(XCT__UNK__MASK | ct);
return ct;
}
@ -168,7 +168,8 @@ xer_check_tag(const void *buf_ptr, int size, const char *need_tag) {
(struct_key, chunk_buf, chunk_size, \
(size_t)chunk_size < size); \
if(converted_size == -1) RETURN(RC_FAIL); \
if(converted_size == 0 && size == chunk_size) \
if(converted_size == 0 \
&& size == (size_t)chunk_size) \
RETURN(RC_WMORE); \
chunk_size = converted_size; \
} while(0)
@ -212,7 +213,8 @@ xer_decode_general(asn_codec_ctx_t *opt_codec_ctx,
/*
* Get the next part of the XML stream.
*/
ch_size = xer_next_token(buf_ptr, size, &ch_type);
ch_size = xer_next_token(&ctx->context, buf_ptr, size,
&ch_type);
switch(ch_size) {
case -1: RETURN(RC_FAIL);
case 0:

3
skeletons/xer_decoder.h
View File

@ -63,7 +63,8 @@ asn_dec_rval_t xer_decode_general(asn_codec_ctx_t *opt_codec_ctx,
PXER_TEXT, /* Plain text between XER tags */
PXER_COMMENT, /* A comment, may be part of */
} pxer_chunk_type_e;
ssize_t xer_next_token(void *buffer, size_t size, pxer_chunk_type_e *_ch_type);
ssize_t xer_next_token(int *stateContext,
void *buffer, size_t size, pxer_chunk_type_e *_ch_type);
/*
* This function checks the buffer against the tag name is expected to occur.