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-rw-r--r--src/parse/properties/margin.c280
1 files changed, 84 insertions, 196 deletions
diff --git a/src/parse/properties/margin.c b/src/parse/properties/margin.c
index 5614024..b320e85 100644
--- a/src/parse/properties/margin.c
+++ b/src/parse/properties/margin.c
@@ -29,92 +29,73 @@
*/
css_error parse_margin(css_language *c,
const parserutils_vector *vector, int *ctx,
- css_style **result)
+ css_style *result)
{
int orig_ctx = *ctx;
int prev_ctx;
const css_token *token;
- css_style *top = NULL;
- css_style *right = NULL;
- css_style *bottom = NULL;
- css_style *left = NULL;
- css_style *ret = NULL;
- uint32_t num_sides = 0;
- uint32_t required_size;
+ uint16_t side_val[4];
+ css_fixed side_length[4];
+ uint32_t side_unit[4];
+ uint32_t side_count = 0;
bool match;
css_error error;
/* Firstly, handle inherit */
token = parserutils_vector_peek(vector, *ctx);
- if (token != NULL && token->type == CSS_TOKEN_IDENT &&
- (lwc_string_caseless_isequal(
- token->idata, c->strings[INHERIT],
- &match) == lwc_error_ok && match)) {
- uint32_t *bytecode;
-
- error = css_stylesheet_style_create(c->sheet,
- 4 * sizeof(uint32_t), &ret);
- if (error != CSS_OK) {
- *ctx = orig_ctx;
+ if (token == NULL)
+ return CSS_INVALID;
+
+ if (is_css_inherit(c, token)) {
+ error = css_stylesheet_style_inherit(result, CSS_PROP_MARGIN_TOP);
+ if (error != CSS_OK)
return error;
- }
- bytecode = (uint32_t *) ret->bytecode;
+ error = css_stylesheet_style_inherit(result, CSS_PROP_MARGIN_RIGHT);
+ if (error != CSS_OK)
+ return error;
- *(bytecode++) = buildOPV(CSS_PROP_MARGIN_TOP,
- FLAG_INHERIT, 0);
- *(bytecode++) = buildOPV(CSS_PROP_MARGIN_RIGHT,
- FLAG_INHERIT, 0);
- *(bytecode++) = buildOPV(CSS_PROP_MARGIN_BOTTOM,
- FLAG_INHERIT, 0);
- *(bytecode++) = buildOPV(CSS_PROP_MARGIN_LEFT,
- FLAG_INHERIT, 0);
+ error = css_stylesheet_style_inherit(result, CSS_PROP_MARGIN_BOTTOM);
+ if (error != CSS_OK)
+ return error;
- parserutils_vector_iterate(vector, ctx);
+ error = css_stylesheet_style_inherit(result, CSS_PROP_MARGIN_LEFT);
+ if (error == CSS_OK)
+ parserutils_vector_iterate(vector, ctx);
- *result = ret;
-
- return CSS_OK;
- } else if (token == NULL) {
- /* No tokens -- clearly garbage */
- *ctx = orig_ctx;
- return CSS_INVALID;
- }
+ return error;
+ }
/* Attempt to parse up to 4 widths */
do {
prev_ctx = *ctx;
- error = CSS_OK;
- /* Ensure that we're not about to parse another inherit */
- token = parserutils_vector_peek(vector, *ctx);
- if (token != NULL && token->type == CSS_TOKEN_IDENT &&
- (lwc_string_caseless_isequal(
- token->idata, c->strings[INHERIT],
- &match) == lwc_error_ok && match)) {
- error = CSS_INVALID;
- goto cleanup;
+ if ((token != NULL) && is_css_inherit(c, token)) {
+ *ctx = orig_ctx;
+ return CSS_INVALID;
}
- if (top == NULL &&
- (error = parse_margin_side(c, vector, ctx,
- CSS_PROP_MARGIN_TOP, &top)) == CSS_OK) {
- num_sides = 1;
- } else if (right == NULL &&
- (error = parse_margin_side(c, vector, ctx,
- CSS_PROP_MARGIN_RIGHT, &right)) == CSS_OK) {
- num_sides = 2;
- } else if (bottom == NULL &&
- (error = parse_margin_side(c, vector, ctx,
- CSS_PROP_MARGIN_BOTTOM, &bottom)) == CSS_OK) {
- num_sides = 3;
- } else if (left == NULL &&
- (error = parse_margin_side(c, vector, ctx,
- CSS_PROP_MARGIN_LEFT, &left)) == CSS_OK) {
- num_sides = 4;
+ if ((token->type == CSS_TOKEN_IDENT) && (lwc_string_caseless_isequal(token->idata, c->strings[AUTO], &match) == lwc_error_ok && match)) {
+ side_val[side_count] = MARGIN_AUTO;
+ parserutils_vector_iterate(vector, ctx);
+ error = CSS_OK;
+ } else {
+ side_val[side_count] = MARGIN_SET;
+
+ error = parse_unit_specifier(c, vector, ctx, UNIT_PX, &side_length[side_count], &side_unit[side_count]);
+ if (error == CSS_OK) {
+ if (side_unit[side_count] & UNIT_ANGLE||
+ side_unit[side_count] & UNIT_TIME||
+ side_unit[side_count] & UNIT_FREQ) {
+ *ctx = orig_ctx;
+ return CSS_INVALID;
+ }
+ }
}
if (error == CSS_OK) {
+ side_count++;
+
consumeWhitespace(vector, ctx);
token = parserutils_vector_peek(vector, *ctx);
@@ -122,147 +103,54 @@ css_error parse_margin(css_language *c,
/* Forcibly cause loop to exit */
token = NULL;
}
- } while (*ctx != prev_ctx && token != NULL);
-
- if (num_sides == 0) {
- error = CSS_INVALID;
- goto cleanup;
+ } while ((*ctx != prev_ctx) && (token != NULL) && (side_count < 4));
+
+
+#define SIDE_APPEND(OP,NUM) \
+ error = css_stylesheet_style_appendOPV(result, (OP), 0, side_val[(NUM)]); \
+ if (error != CSS_OK) \
+ break; \
+ if (side_val[(NUM)] == MARGIN_SET) { \
+ error = css_stylesheet_style_append(result, side_length[(NUM)]); \
+ if (error != CSS_OK) \
+ break; \
+ error = css_stylesheet_style_append(result, side_unit[(NUM)]); \
+ if (error != CSS_OK) \
+ break; \
}
- /* Calculate size of resultant style */
- if (num_sides == 1) {
- required_size = 4 * top->length;
- } else if (num_sides == 2) {
- required_size = 2 * top->length + 2 * right->length;
- } else if (num_sides == 3) {
- required_size = top->length + 2 * right->length +
- bottom->length;
- } else {
- required_size = top->length + right->length +
- bottom->length + left->length;
- }
-
- error = css_stylesheet_style_create(c->sheet, required_size, &ret);
- if (error != CSS_OK)
- goto cleanup;
-
- required_size = 0;
-
- if (num_sides == 1) {
- uint32_t *opv = ((uint32_t *) top->bytecode);
- uint8_t flags = getFlags(*opv);
- uint16_t value = getValue(*opv);
-
- memcpy(((uint8_t *) ret->bytecode) + required_size,
- top->bytecode, top->length);
- required_size += top->length;
-
- *opv = buildOPV(CSS_PROP_MARGIN_RIGHT, flags, value);
- memcpy(((uint8_t *) ret->bytecode) + required_size,
- top->bytecode, top->length);
- required_size += top->length;
-
- *opv = buildOPV(CSS_PROP_MARGIN_BOTTOM, flags, value);
- memcpy(((uint8_t *) ret->bytecode) + required_size,
- top->bytecode, top->length);
- required_size += top->length;
-
- *opv = buildOPV(CSS_PROP_MARGIN_LEFT, flags, value);
- memcpy(((uint8_t *) ret->bytecode) + required_size,
- top->bytecode, top->length);
- required_size += top->length;
- } else if (num_sides == 2) {
- uint32_t *vopv = ((uint32_t *) top->bytecode);
- uint32_t *hopv = ((uint32_t *) right->bytecode);
- uint8_t vflags = getFlags(*vopv);
- uint8_t hflags = getFlags(*hopv);
- uint16_t vvalue = getValue(*vopv);
- uint16_t hvalue = getValue(*hopv);
-
- memcpy(((uint8_t *) ret->bytecode) + required_size,
- top->bytecode, top->length);
- required_size += top->length;
-
- memcpy(((uint8_t *) ret->bytecode) + required_size,
- right->bytecode, right->length);
- required_size += right->length;
-
- *vopv = buildOPV(CSS_PROP_MARGIN_BOTTOM, vflags, vvalue);
- memcpy(((uint8_t *) ret->bytecode) + required_size,
- top->bytecode, top->length);
- required_size += top->length;
-
- *hopv = buildOPV(CSS_PROP_MARGIN_LEFT, hflags, hvalue);
- memcpy(((uint8_t *) ret->bytecode) + required_size,
- right->bytecode, right->length);
- required_size += right->length;
- } else if (num_sides == 3) {
- uint32_t *opv = ((uint32_t *) right->bytecode);
- uint8_t flags = getFlags(*opv);
- uint16_t value = getValue(*opv);
-
- memcpy(((uint8_t *) ret->bytecode) + required_size,
- top->bytecode, top->length);
- required_size += top->length;
-
- memcpy(((uint8_t *) ret->bytecode) + required_size,
- right->bytecode, right->length);
- required_size += right->length;
-
- memcpy(((uint8_t *) ret->bytecode) + required_size,
- bottom->bytecode, bottom->length);
- required_size += bottom->length;
-
- *opv = buildOPV(CSS_PROP_MARGIN_LEFT, flags, value);
- memcpy(((uint8_t *) ret->bytecode) + required_size,
- right->bytecode, right->length);
- required_size += right->length;
- } else {
- memcpy(((uint8_t *) ret->bytecode) + required_size,
- top->bytecode, top->length);
- required_size += top->length;
-
- memcpy(((uint8_t *) ret->bytecode) + required_size,
- right->bytecode, right->length);
- required_size += right->length;
-
- memcpy(((uint8_t *) ret->bytecode) + required_size,
- bottom->bytecode, bottom->length);
- required_size += bottom->length;
-
- memcpy(((uint8_t *) ret->bytecode) + required_size,
- left->bytecode, left->length);
- required_size += left->length;
+ switch (side_count) {
+ case 1:
+ SIDE_APPEND(CSS_PROP_MARGIN_TOP, 0);
+ SIDE_APPEND(CSS_PROP_MARGIN_RIGHT, 0);
+ SIDE_APPEND(CSS_PROP_MARGIN_BOTTOM, 0);
+ SIDE_APPEND(CSS_PROP_MARGIN_LEFT, 0);
+ break;
+ case 2:
+ SIDE_APPEND(CSS_PROP_MARGIN_TOP, 0);
+ SIDE_APPEND(CSS_PROP_MARGIN_RIGHT, 1);
+ SIDE_APPEND(CSS_PROP_MARGIN_BOTTOM, 0);
+ SIDE_APPEND(CSS_PROP_MARGIN_LEFT, 1);
+ break;
+ case 3:
+ SIDE_APPEND(CSS_PROP_MARGIN_TOP, 0);
+ SIDE_APPEND(CSS_PROP_MARGIN_RIGHT, 1);
+ SIDE_APPEND(CSS_PROP_MARGIN_BOTTOM, 2);
+ SIDE_APPEND(CSS_PROP_MARGIN_LEFT, 1);
+ break;
+ case 4:
+ SIDE_APPEND(CSS_PROP_MARGIN_TOP, 0);
+ SIDE_APPEND(CSS_PROP_MARGIN_RIGHT, 1);
+ SIDE_APPEND(CSS_PROP_MARGIN_BOTTOM, 2);
+ SIDE_APPEND(CSS_PROP_MARGIN_LEFT, 3);
+ break;
+ default:
+ error = CSS_INVALID;
}
- assert(required_size == ret->length);
-
- /* Write the result */
- *result = ret;
- /* Invalidate ret, so that cleanup doesn't destroy it */
- ret = NULL;
-
- /* Clean up after ourselves */
-cleanup:
- if (top)
- css_stylesheet_style_destroy(c->sheet, top, error == CSS_OK);
- if (right)
- css_stylesheet_style_destroy(c->sheet, right, error == CSS_OK);
- if (bottom)
- css_stylesheet_style_destroy(c->sheet, bottom, error == CSS_OK);
- if (left)
- css_stylesheet_style_destroy(c->sheet, left, error == CSS_OK);
- if (ret)
- css_stylesheet_style_destroy(c->sheet, ret, error == CSS_OK);
-
if (error != CSS_OK)
*ctx = orig_ctx;
return error;
}
-
-
-
-
-
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-18 14:03:18 +0000