Bob the Compiler, can he compile it? Bob the Compiler, YES HE CAN!
##Compile To build the compiler, type in Terminal
g++ lex.cpp parse.cpp cst.cpp semantic.cpp code_gen.cpp bobc.cpp -o bobc
Usage:
./bobc [option] testCode.txt
##Grammar
| Non-Terminals | Terminals |
|---|---|
| Program | Block $ |
| Block | { StatementList } |
| StatementList | Statement StatementList |
| Ø | |
| Statement | PrintStatement |
| AssignmentStatement | |
| VarDecl | |
| WhileStatement | |
| IfStatement | |
| Block | |
| PrintStatement | print ( Expr ) |
| AssignmentStatement | Id = Expr |
| VarDecl | type Id |
| WhileStatement | while BooleanExpr Block |
| IfStatement | if BooleanExpr Block |
| Expr | IntExpr |
| StringExpr | |
| BooleanExpr | |
| Id | |
| IntExpr | digit intop Expr |
| digit | |
| StringExpr | " CharList " |
| BooleanExpr | ( Expr boolop Expr ) |
| boolval | |
| Id | char |
| CharList | char CharList |
| Ø | |
| type | int : string : boolean |
| char | a : b : c ... z |
| space | the space character |
| digit | 1 : 2 : 3 : 4 : 5 : 6 : 7 : 8 : 9 : 0 |
| boolop | == : != |
| boolval | true : false |
| intop | + |