LR; LR(1) grammar analyzer and parser generator. [IBM370; FORTRAN (ANSI X3. 9-1966)]
LR is an LR(1) parsing system written entirely in ANSI standard FORTRAN-66. The system includes a grammar analyzer program which reads a context-free grammar as input and produces LR(1) parsing tables as output, and a skeleton parser that, when compiled with the tables as data, will parse the language defined by the grammar. Table generation also produces a complete grammar listing with error messages, diagnostic data, and a trace of the parser generation process.IBM370; FORTRAN (ANSI X3.9-1966); OS/370; One input unit (LUN20) and one output unit (LUN21) are required. Disk is suggested for output. The program uses approximately 40,000 decimal words of working storage at LLL. LR requires 278K bytes of storage to execute the sample problems on an IBM370/195.
- Research Organization:
- Lawrence Livermore National Lab., CA (USA)
- OSTI ID:
- 6359355
- Report Number(s):
- ANL/NESC-822; ON: DE83048822
- Country of Publication:
- United States
- Language:
- English
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