• src

  • Config: Configuration file for operators, registers and Instr types.
  • IR: IR generation handler.
  • STManager: Symbol Tables Manager
  • SymbolTable: Symbol Table
  • TAC: In memory representation of 3 address code.
  • lexer: lexer file
  • parser: parser file
  • main: program start here.

• features

  • declarations of vars and functions.
  • conditional if, if-else, if-elseif.
  • ternary operator.
  • switch case statement.
  • for loop.
  • while, do-while.
  • break, continue.
  • function call with params and return value.
  • ECHO supports.
  • pre-Increment and pre-Decrement.
  • error handling for undefined decls and types.

• test

Test cases contaning Intermediate 3AC.

- test1.php          // function call and ternary
- test2.php          // switch stmt
- test3.php          // for loop
- test4.php          // both kind of if-else stmt 
- test5.php          // while stmt

• makefile
  • to wrap all things together.

in asgn4 folder run these command to make executable irgen in bin folder-

make clean
make

test cases can be run with this command:

./bin/irgen ./test/test1.php