diff options
| -rw-r--r-- | src/glsl/glcpp/glcpp-parse.y | 83 |
1 files changed, 47 insertions, 36 deletions
diff --git a/src/glsl/glcpp/glcpp-parse.y b/src/glsl/glcpp/glcpp-parse.y index d547ecf6ff3..ff9fa7a49b4 100644 --- a/src/glsl/glcpp/glcpp-parse.y +++ b/src/glsl/glcpp/glcpp-parse.y @@ -1275,6 +1275,48 @@ _glcpp_parser_expand_if (glcpp_parser_t *parser, int type, token_list_t *list) glcpp_parser_lex_from (parser, expanded); } +static void +_glcpp_parser_apply_pastes (glcpp_parser_t *parser, token_list_t *list) +{ + token_node_t *node; + + node = list->head; + while (node) + { + token_node_t *next_non_space; + + /* Look ahead for a PASTE token, skipping space. */ + next_non_space = node->next; + while (next_non_space && next_non_space->token->type == SPACE) + next_non_space = next_non_space->next; + + if (next_non_space == NULL) + break; + + if (next_non_space->token->type != PASTE) { + node = next_non_space; + continue; + } + + /* Now find the next non-space token after the PASTE. */ + next_non_space = next_non_space->next; + while (next_non_space && next_non_space->token->type == SPACE) + next_non_space = next_non_space->next; + + if (next_non_space == NULL) { + yyerror (&node->token->location, parser, "'##' cannot appear at either end of a macro expansion\n"); + return; + } + + node->token = _token_paste (parser, node->token, next_non_space->token); + node->next = next_non_space->next; + if (next_non_space == list->tail) + list->tail = node; + } + + list->non_space_tail = list->tail; +} + /* This is a helper function that's essentially part of the * implementation of _glcpp_parser_expand_node. It shouldn't be called * except for by that function. @@ -1386,41 +1428,7 @@ _glcpp_parser_expand_function (glcpp_parser_t *parser, _token_list_trim_trailing_space (substituted); - node = substituted->head; - while (node) - { - token_node_t *next_non_space; - - /* Look ahead for a PASTE token, skipping space. */ - next_non_space = node->next; - while (next_non_space && next_non_space->token->type == SPACE) - next_non_space = next_non_space->next; - - if (next_non_space == NULL) - break; - - if (next_non_space->token->type != PASTE) { - node = next_non_space; - continue; - } - - /* Now find the next non-space token after the PASTE. */ - next_non_space = next_non_space->next; - while (next_non_space && next_non_space->token->type == SPACE) - next_non_space = next_non_space->next; - - if (next_non_space == NULL) { - yyerror (&node->token->location, parser, "'##' cannot appear at either end of a macro expansion\n"); - return NULL; - } - - node->token = _token_paste (parser, node->token, next_non_space->token); - node->next = next_non_space->next; - if (next_non_space == substituted->tail) - substituted->tail = node; - } - - substituted->non_space_tail = substituted->tail; + _glcpp_parser_apply_pastes (parser, substituted); return substituted; } @@ -1490,13 +1498,16 @@ _glcpp_parser_expand_node (glcpp_parser_t *parser, if (! macro->is_function) { + token_list_t *replacement; *last = node; /* Replace a macro defined as empty with a SPACE token. */ if (macro->replacements == NULL) return _token_list_create_with_one_space (parser); - return _token_list_copy (parser, macro->replacements); + replacement = _token_list_copy (parser, macro->replacements); + _glcpp_parser_apply_pastes (parser, replacement); + return replacement; } return _glcpp_parser_expand_function (parser, node, last); |