https://github.com/melvin0008/buildingaparser

BuildingAParser
https://github.com/melvin0008/buildingaparser

Last synced: 7 days ago
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BuildingAParser

• Host: GitHub
• URL: https://github.com/melvin0008/buildingaparser
• Owner: melvin0008
• License: apache-2.0
• Created: 2015-09-24T02:25:18.000Z (over 9 years ago)
• Default Branch: master
• Last Pushed: 2015-09-28T03:21:30.000Z (over 9 years ago)
• Last Synced: 2024-11-14T05:36:50.194Z (2 months ago)
• Language: Java
• Size: 278 KB
• Stars: 0
• Watchers: 4
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# BuildingAParser

Parser will generate java bytecode for the following grammar

```

program ->  decls stmts end   

decls   ->  int idlist ';'   

idlist  ->  id [',' idlist ]   

stmts   ->  stmt [ stmts ]   

stmt    ->  assign ';'| cmpd | cond | loop    

assign  ->  id '=' expr    

cmpd    ->  '{' stmts '}'   

cond    ->  if '(' rexp ')' stmt [ else stmt ]    

loop    ->  for '(' [assign] ';' [rexp] ';' [assign] ')' stmt   

rexp -> expr('<'|'>'|'=='|'!=')expr     

expr -> term [ ('+' | '-') expr ]    

term -> factor [ ('*' | '/') term ]    

factor -> int_lit | id | '(' expr ')'   

```