diff options
Diffstat (limited to 'dimension/tokenize.l')
| -rw-r--r-- | dimension/tokenize.l | 59 |
1 files changed, 38 insertions, 21 deletions
diff --git a/dimension/tokenize.l b/dimension/tokenize.l index 84b0694..222eaa1 100644 --- a/dimension/tokenize.l +++ b/dimension/tokenize.l @@ -36,35 +36,45 @@ %% %{ -#define PUSH_TOKEN(token_type) \ +/* Some helpful macros that set fields of a token correctly, and other stuff */ + +#define NEW_TOKEN(token_type) \ do { \ token.type = token_type; \ token.filename = filename; \ token.line = yylineno; \ token.col = yycolumn; \ token.value = NULL; \ - PUSH(); \ + } while (0) + +#define CALCULATE_COLUMN() yycolumn += yyleng + +#define PUSH() \ + do { \ + dmnsn_array_push(tokens, &token); \ + CALCULATE_COLUMN(); \ + } while (0) + +#define PUSH_TOKEN(token_type) \ + do { \ + NEW_TOKEN(token_type); \ + PUSH(); \ } while (0) #define PUSH_VALUE_TOKEN(token_type) \ do { \ - token.type = token_type; \ - token.filename = filename; \ - token.line = yylineno; \ - token.col = yycolumn; \ + NEW_TOKEN(token_type); \ token.value = strdup(yytext); \ PUSH(); \ } while (0) #define STRING_TOKEN() \ do { \ - token.type = DMNSN_T_STRING; \ - token.filename = filename; \ - token.line = yylineno; \ - token.col = yycolumn; \ + NEW_TOKEN(DMNSN_T_STRING); \ token.value = malloc(1); \ token.value[0] = '\0'; \ string_length = 0; \ + CALCULATE_COLUMN(); \ } while (0) #define STRCAT(str, len) \ @@ -72,10 +82,9 @@ token.value = realloc(token.value, string_length + len + 1); \ strncpy(token.value + string_length, str, len); \ string_length += len; \ + CALCULATE_COLUMN(); \ } while(0) -#define PUSH() dmnsn_array_push(tokens, &token) - dmnsn_token token; size_t string_length; unsigned long wchar; @@ -85,16 +94,20 @@ unsigned long wchar; <INITIAL,DMNSN_BLOCK_COMMENT>"/*" { yy_push_state(DMNSN_BLOCK_COMMENT, yyscanner); + CALCULATE_COLUMN(); } -<DMNSN_BLOCK_COMMENT>"*/" yy_pop_state(yyscanner); -<DMNSN_BLOCK_COMMENT>[^*/\n]* ; -<DMNSN_BLOCK_COMMENT>"/" ; -<DMNSN_BLOCK_COMMENT>"*" ; +<DMNSN_BLOCK_COMMENT>"*/" CALCULATE_COLUMN(); yy_pop_state(yyscanner); +<DMNSN_BLOCK_COMMENT>[^*/\n]* CALCULATE_COLUMN(); +<DMNSN_BLOCK_COMMENT>"/" CALCULATE_COLUMN(); +<DMNSN_BLOCK_COMMENT>"*" CALCULATE_COLUMN(); <DMNSN_BLOCK_COMMENT>\n ; -"//" yy_push_state(DMNSN_LINE_COMMENT, yyscanner); -<DMNSN_LINE_COMMENT>\n yy_pop_state(yyscanner); -<DMNSN_LINE_COMMENT>[^\n]+ ; +"//" { + yy_push_state(DMNSN_LINE_COMMENT, yyscanner); + CALCULATE_COLUMN(); +} +<DMNSN_LINE_COMMENT>\n ; yy_pop_state(yyscanner); +<DMNSN_LINE_COMMENT>[^\n]+ CALCULATE_COLUMN(); (?# Punctuation) "{" PUSH_TOKEN(DMNSN_T_LBRACE); @@ -153,7 +166,10 @@ unsigned long wchar; (?# String escape sequences) -<DMNSN_STRING>"\\" yy_push_state(DMNSN_STRING_ESCAPE, yyscanner); +<DMNSN_STRING>"\\" { + yy_push_state(DMNSN_STRING_ESCAPE, yyscanner); + CALCULATE_COLUMN(); +} <DMNSN_STRING_ESCAPE>"a" STRCAT("\a", 1); yy_pop_state(yyscanner); <DMNSN_STRING_ESCAPE>"b" STRCAT("\b", 1); yy_pop_state(yyscanner); <DMNSN_STRING_ESCAPE>"f" STRCAT("\f", 1); yy_pop_state(yyscanner); @@ -180,7 +196,8 @@ unsigned long wchar; } (?# Ignore whitespace) -[[:space:]]+ ; +[\b\r\t\v ]+ CALCULATE_COLUMN(); +\n ; (?# Fall-through) . { |