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https://github.com/imjasonh/nescript
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State machine dispatch: - Assign each state a numeric index, store in ZP $03 - Main loop dispatch table: CMP + BNE + JMP trampoline pattern (avoids branch range limits for large programs) - on_enter/on_exit handlers generated as JSR targets - Transition statement writes state index + JSR enter/exit handlers Function calls: - Function bodies emitted as labeled subroutines with RTS - Statement::Call generates parameter passing via ZP + JSR - Statement::Return generates RTS (with value in A if present) - Parameter slots at ZP $04-$07 Break/continue: - Loop stack tracks continue/break label pairs - Break generates JMP to break_label - Continue generates JMP to continue_label - While and Loop push/pop the stack Array indexing: - LValue::ArrayIndex generates TAX + STA absolute,X - Expr::ArrayIndex generates TAX + LDA absolute,X / ZP,X - Compound array assignments (+=, -=, &=, |=, ^=) load-modify-store Scroll: - scroll(x, y) writes to PPU $2005 twice (X then Y) Math: - Multiply generates JSR __multiply (shift-and-add routine) - Divide generates JSR __divide (restoring division) - Modulo loads remainder from $03 after divide - ShiftLeft generates ASL A, ShiftRight generates LSR A - Math routines wired into linker Error validations: - E0203 for assignment to const variables - Break/continue outside loop detection (in_loop tracking) 233 tests (8 new codegen + 2 analyzer + 2 integration), all passing. https://claude.ai/code/session_01W6eQFStA66EuMKHUFo2rx3 |
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| integration | ||
| integration_test.rs | ||