/simple-pascal-compiler

Apache License 2.0Apache-2.0

Simple S-Pacal Compiler 概要

Build

  • 建立build文件夹，cd进入，通过
cmake ..
make

这时会根据makefile文件自动构建、链接程序。

Features

  • 简单的数据类型: boolean, char, integer, real,string
  • 控制流: if-else, case-of, while-do, repeat-until, and for loops
  • 定义: const, type, var, and routine sections
  • Routine (function and procedure) definition and invocation
    • 包括一些系统函数: read(ln), write(ln), abs, sqrt, chr, ord, pred, succ
  • Operators: + - * / div mod and or xor not and comparison operators
  • 类型检查, 从 integer 到 real 隐式类型转换

Usage

USAGE: spc <option> <source.pas>
OPTION:
  -emit-llvm    Emit LLVM IR (.ll)
  -S            Emit assembly code (.s)
  -c            Emit object code (.o)
  -O            (Optional) 可选的做一些优化
  -o des        name output file as des
  -ast          生成ast树
  • For LLVM IR files, run lli output.ll to directly execute them.
  • For assembly and object files, run cc output.{s,o} to generate executables.

Dependencies

  • CMake 3.7+
  • Flex 2.5+
  • Bison 3.0+
  • LLVM 9 ( LLVM 10 Not recommended becuause of some bug in cmake scripts of it)

TODO

  • 支持array record复杂的数据类型
  • 完成支持函数嵌套(Optional)
  • generate detailed error messages for Flex/Bison (Optional)
  • do error recovery in Bison and codegen (Optional)