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-dlg(1) PCCTS Manual Pages dlg(1)\r
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-NAME\r
- dlg - DFA Lexical Analyzer Generator\r
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-SYNTAX\r
- dlg [_\bo_\bp_\bt_\bi_\bo_\bn_\bs] _\bl_\be_\bx_\bi_\bc_\ba_\bl__\bs_\bp_\be_\bc [_\bo_\bu_\bt_\bp_\bu_\bt__\bf_\bi_\bl_\be]\r
-\r
-DESCRIPTION\r
- dlg is a tool that produces fast deterministic finite auto-\r
- mata for recognizing regular expressions in input.\r
-\r
-OPTIONS\r
- -CC Generate C++ output. The _\bo_\bu_\bt_\bp_\bu_\bt__\bf_\bi_\bl_\be is not specified\r
- in this case.\r
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- -C[ level]\r
- Where level is the compression level used. 0 indica-\r
- tions no compression, 1 removes all unused characters\r
- from the transition from table, and 2 maps equivalent\r
- characters into the same character classes. It is sug-\r
- gested that level -C2 is used, since it will signifi-\r
- cantly reduce the size of the dfa produced for lexical\r
- analyzer.\r
-\r
- -m Produces the header file for the lexical mode with a\r
- name other than the default name of "mode.h".\r
-\r
- -i An interactive, or as interactive as possible, parser\r
- is produced. A character is only obtained when\r
- required to decide which state to go to. Some care\r
- must be taken to obtain accept states that do not\r
- require look ahead at the next character to determine\r
- if that is the stop state. Any regular expression with\r
- a Kleene closure at the end is guaranteed to require\r
- another character of look ahead.\r
-\r
- -cl class\r
- Specify a class name for DLG to generate. The default\r
- is DLGLexer.\r
-\r
- -ci The automaton will treat upper and lower case charac-\r
- ters identically. This is accomplished in the automa-\r
- ton; the characters in the lexical buffer are unmodi-\r
- fied.\r
-\r
- -cs Upper and lower case characters are treated as dis-\r
- tinct. This is the default.\r
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- -o dir\r
- Directory where output files should go (default=".").\r
- This is very nice for keeping the source directory\r
- clear of ANTLR and DLG spawn.\r
-\r
- -Wambiguity\r
- Warns if more than one regular expression could match\r
- the same character sequence. The warnings give the\r
- numbers of the expressions in the dlg lexical specifi-\r
- cation file. The numbering of the expressions starts\r
- at one. Multiple warnings may be print for the same\r
- expressions.\r
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- - Used in place of file names to get input from standard\r
- in or send output to standard out.\r
-\r
-SPECIAL CONSIDERATIONS\r
- _\bD_\bl_\bg works... we think. There is no implicit guarantee of\r
- anything. We reserve no legal rights to the software known\r
- as the Purdue Compiler Construction Tool Set (PCCTS) - PCCTS\r
- is in the public domain. An individual or company may do\r
- whatever they wish with source code distributed with PCCTS\r
- or the code generated by PCCTS, including the incorporation\r
- of PCCTS, or its output, into commercial software. We\r
- encourage users to develop software with PCCTS. However, we\r
- do ask that credit is given to us for developing PCCTS. By\r
- "credit", we mean that if you incorporate our source code\r
- into one of your programs (commercial product, research pro-\r
- ject, or otherwise) that you acknowledge this fact somewhere\r
- in the documentation, research report, etc... If you like\r
- PCCTS and have developed a nice tool with the output, please\r
- mention that you developed it using PCCTS. As long as these\r
- guidelines are followed, we expect to continue enhancing\r
- this system and expect to make other tools available as they\r
- are completed.\r
-\r
-FILES\r
- mode.h , dlgauto.h , dlgdef.h\r
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-SEE ALSO\r
- antlr(1), pccts(1)\r
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-BUGS\r
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projects / mirror_edk2.git / blobdiff