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-rw-r--r--src/parse/properties/utils.c150
1 files changed, 105 insertions, 45 deletions
diff --git a/src/parse/properties/utils.c b/src/parse/properties/utils.c
index 7f9d9d2..fa8ffbe 100644
--- a/src/parse/properties/utils.c
+++ b/src/parse/properties/utils.c
@@ -1362,12 +1362,43 @@ cleanup:
static css_error
css__parse_calc_sum(css_language *c,
const parserutils_vector *vector, int *ctx,
- css_style *result);
+ parserutils_buffer *result);
+
+static css_error
+css__parse_calc_number(
+ const parserutils_vector *vector, int *ctx,
+ parserutils_buffer *result)
+{
+ const css_token *token;
+ css_fixed num;
+ size_t consumed;
+ css_code_t push = CALC_PUSH_NUMBER;
+
+ /* Consume the number token */
+ token = parserutils_vector_iterate(vector, ctx);
+ if (token == NULL || token->type != CSS_TOKEN_NUMBER) {
+ return CSS_INVALID;
+ }
+
+ num = css__number_from_string((const uint8_t *)lwc_string_data(token->idata),
+ lwc_string_length(token->idata), false, &consumed);
+
+ if (consumed != lwc_string_length(token->idata)) {
+ return CSS_INVALID;
+ }
+
+ return css_error_from_parserutils_error(
+ parserutils_buffer_appendv(result, 2,
+ &push, sizeof(push),
+ &num, sizeof(num)
+ )
+ );
+}
static css_error
css__parse_calc_value(css_language *c,
const parserutils_vector *vector, int *ctx,
- css_style *result)
+ parserutils_buffer *result)
{
css_error error;
int orig_ctx = *ctx;
@@ -1377,6 +1408,7 @@ css__parse_calc_value(css_language *c,
token = parserutils_vector_peek(vector, *ctx);
if (tokenIsChar(token, '(')) {
parserutils_vector_iterate(vector, ctx);
+ consumeWhitespace(vector, ctx);
error = css__parse_calc_sum(c, vector, ctx, result);
if (error != CSS_OK) {
return error;
@@ -1389,12 +1421,18 @@ css__parse_calc_value(css_language *c,
/* Consume the close-paren to complete this value */
parserutils_vector_iterate(vector, ctx);
} else switch (token->type) {
- case CSS_TOKEN_NUMBER: /* Fall through */
+ case CSS_TOKEN_NUMBER:
+ error = css__parse_calc_number(vector, ctx, result);
+ if (error != CSS_OK) {
+ return error;
+ }
+ break;
case CSS_TOKEN_DIMENSION: /* Fall through */
case CSS_TOKEN_PERCENTAGE:
{
css_fixed length = 0;
uint32_t unit = 0;
+ css_code_t push = CALC_PUSH_VALUE;
*ctx = orig_ctx;
error = css__parse_unit_specifier(c, vector, ctx, UNIT_CALC_NUMBER, &length, &unit);
@@ -1403,7 +1441,14 @@ css__parse_calc_value(css_language *c,
return error;
}
- error = css__stylesheet_style_vappend(result, 3, (css_code_t) CALC_PUSH_VALUE, length, unit);
+ error = css_error_from_parserutils_error(
+ parserutils_buffer_appendv(result, 3,
+ &push, sizeof(push),
+ &length, sizeof(length),
+ &unit, sizeof(unit)
+ )
+ );
+
}
break;
@@ -1412,11 +1457,7 @@ css__parse_calc_value(css_language *c,
break;
}
- token = parserutils_vector_peek(vector, *ctx);
- while (token->type == CSS_TOKEN_S) {
- parserutils_vector_iterate(vector, ctx);
- token = parserutils_vector_peek(vector, *ctx);
- }
+ consumeWhitespace(vector, ctx);
return error;
}
@@ -1428,12 +1469,11 @@ css__parse_calc_value(css_language *c,
static css_error
css__parse_calc_product(css_language *c,
const parserutils_vector *vector, int *ctx,
- css_style *result)
+ parserutils_buffer *result)
{
css_error error = CSS_OK;
const css_token *token;
- bool multiplication;
-
+ css_code_t operator;
/* First parse a value */
error = css__parse_calc_value(c, vector, ctx, result);
@@ -1453,29 +1493,31 @@ css__parse_calc_product(css_language *c,
tokenIsChar(token, '-'))
break;
else if (tokenIsChar(token, '*'))
- multiplication = true;
+ operator = CALC_MULTIPLY;
else if (tokenIsChar(token, '/'))
- multiplication = false;
+ operator = CALC_DIVIDE;
else {
error = CSS_INVALID;
break;
}
/* Consume that * or / now */
parserutils_vector_iterate(vector, ctx);
- token = parserutils_vector_peek(vector, *ctx);
- while (token->type == CSS_TOKEN_S) {
- parserutils_vector_iterate(vector, ctx);
- token = parserutils_vector_peek(vector, *ctx);
+ consumeWhitespace(vector, ctx);
+
+ if (operator == CALC_MULTIPLY) {
+ /* parse another value */
+ error = css__parse_calc_value(c, vector, ctx, result);
+ } else {
+ error = css__parse_calc_number(vector, ctx, result);
}
- /* parse another value */
- error = css__parse_calc_value(c, vector, ctx, result);
if (error != CSS_OK)
break;
/* emit the multiplication/division operator */
- error = css__stylesheet_style_append(result,
- (css_code_t) (multiplication ? CALC_MULTIPLY : CALC_DIVIDE));
+ error = css_error_from_parserutils_error(
+ parserutils_buffer_append(result, (const uint8_t *)&operator, sizeof(operator))
+ );
} while (1);
/* We've fallen off, either we had an error or we're left with ')' */
return error;
@@ -1485,12 +1527,11 @@ css__parse_calc_product(css_language *c,
css_error
css__parse_calc_sum(css_language *c,
const parserutils_vector *vector, int *ctx,
- css_style *result)
+ parserutils_buffer *result)
{
css_error error = CSS_OK;
const css_token *token;
- bool addition;
-
+ css_code_t operator;
/* First parse a product */
error = css__parse_calc_product(c, vector, ctx, result);
@@ -1507,21 +1548,16 @@ css__parse_calc_sum(css_language *c,
} else if (tokenIsChar(token, ')'))
break;
else if (tokenIsChar(token, '+'))
- addition = true;
+ operator = CALC_ADD;
else if (tokenIsChar(token, '-'))
- addition = false;
+ operator = CALC_SUBTRACT;
else {
error = CSS_INVALID;
break;
}
/* Consume that + or - now */
parserutils_vector_iterate(vector, ctx);
- token = parserutils_vector_peek(vector, *ctx);
-
- while (token->type == CSS_TOKEN_S) {
- parserutils_vector_iterate(vector, ctx);
- token = parserutils_vector_peek(vector, *ctx);
- }
+ consumeWhitespace(vector, ctx);
/* parse another product */
error = css__parse_calc_product(c, vector, ctx, result);
@@ -1529,7 +1565,9 @@ css__parse_calc_sum(css_language *c,
break;
/* emit the addition/subtraction operator */
- error = css__stylesheet_style_append(result, (css_code_t) (addition ? CALC_ADD : CALC_SUBTRACT));
+ error = css_error_from_parserutils_error(
+ parserutils_buffer_append(result, (const uint8_t *)&operator, sizeof(operator))
+ );
} while (1);
/* We've fallen off, either we had an error or we're left with ')' */
return error;
@@ -1546,6 +1584,12 @@ css_error css__parse_calc(css_language *c,
const css_token *token;
css_error error = CSS_OK;
css_style *calc_style = NULL;
+ parserutils_buffer *calc_buffer = NULL;
+ lwc_string *calc_expr = NULL;
+ uint32_t expr_index = 0;
+ css_code_t finish = CALC_FINISH;
+
+ consumeWhitespace(vector, ctx);
token = parserutils_vector_peek(vector, *ctx);
if (token == NULL) {
@@ -1553,9 +1597,10 @@ css_error css__parse_calc(css_language *c,
return CSS_INVALID;
}
- while (token->type == CSS_TOKEN_S) {
- parserutils_vector_iterate(vector, ctx);
- token = parserutils_vector_peek(vector, *ctx);
+ if (parserutils_buffer_create(&calc_buffer) != PARSERUTILS_OK) {
+ /* Since &calc_buffer is valid, the only error case is NONMEM */
+ *ctx = orig_ctx;
+ return CSS_NOMEM;
}
error = css__stylesheet_style_create(c->sheet, &calc_style);
@@ -1565,37 +1610,52 @@ css_error css__parse_calc(css_language *c,
error = css__stylesheet_style_append(calc_style, property);
if (error != CSS_OK)
goto cleanup;
-
+
error = css__stylesheet_style_append(calc_style, (css_code_t) unit);
if (error != CSS_OK)
goto cleanup;
- error = css__parse_calc_sum(c, vector, ctx, calc_style);
+ error = css__parse_calc_sum(c, vector, ctx, calc_buffer);
if (error != CSS_OK)
goto cleanup;
+ consumeWhitespace(vector, ctx);
token = parserutils_vector_peek(vector, *ctx);
- while (token->type == CSS_TOKEN_S) {
- parserutils_vector_iterate(vector, ctx);
- token = parserutils_vector_peek(vector, *ctx);
- }
if (!tokenIsChar(token, ')')) {
/* If we don't get a close-paren, give up now */
error = CSS_INVALID;
goto cleanup;
}
+ /* Append the indicator that the calc is finished */
+ error = css_error_from_parserutils_error(
+ parserutils_buffer_append(calc_buffer, (const uint8_t *)&finish, sizeof(finish))
+ );
+ if (error != CSS_OK)
+ goto cleanup;
+
/* Swallow that close paren */
parserutils_vector_iterate(vector, ctx);
- /* Append the indicator that the calc is finished */
- error = css__stylesheet_style_append(calc_style, (css_code_t) CALC_FINISH);
+ /* Create the lwc string representing the calculation and store it in */
+ error = css_error_from_lwc_error(
+ lwc_intern_string((const char *)calc_buffer->data, calc_buffer->length, &calc_expr)
+ );
if (error != CSS_OK)
goto cleanup;
+ /* This always takes ownership of calc_expr, so we should not use after this */
+ error = css__stylesheet_string_add(calc_style->sheet, calc_expr, &expr_index);
+ if (error != CSS_OK)
+ goto cleanup;
+
+ css__stylesheet_style_append(calc_style, (css_code_t) expr_index);
+
error = css__stylesheet_merge_style(result, calc_style);
cleanup:
css__stylesheet_style_destroy(calc_style);
+ parserutils_buffer_destroy(calc_buffer);
+ /* We do not need to clean up calc_expr, it will never leak */
if (error != CSS_OK) {
*ctx = orig_ctx;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-01 14:17:41 +0000