This repo contains my work-in-progress on Nora Sandler's Writing a C Compiler book.

This implementation covers Chapters 1-17 of Sandler's book. This excludes Part II, Chapter 18 (Structures) and Part III, Chapters 19-20 (Optimizing IR, Register Allocation).

Supported:

• unary operators: ~, -
• binary operators: +, -, *, /, %
• bitwise operators: &, |, ^, <<. >>
• logical operators: !, &&, ||
• relational operators: ==, !=, <. >, <=, >=
• compound arithmetic assignment: +=, -=, *=, /=, %=
• compound bitwise assignment: &=, |=, ^=, <<=, >>=
• pre/post increment, pre/post decrement: ++, --
• conditional (ternary) expressions
• if statements
• compound statements (blocks, scopes)
• loops: for, while, do, break, continue
• labeled statements and goto
• switch statements
• functions
• local variables
• file-scope variables
• storage class specifiers: extern, static
• numeric types: int, unsigned, long, long unsigned, double
• pointers, arrays, and pointer arithmetic
• char and null-terminated C strings
• sizeof

Unsupported:

• typedef
• function pointer type
• single precision floating-point type float
• extended precision floating-point type long double
• compound literal expression, like int *p = (int []){2, 4};
• non-constant expression as static initializer, like static int *ptr = &x;
• pointer arithmetic with void pointer and sizeof operations on void
• struct
• union
• variable access via global offset table (GOT)