CharlesKWON 29ca02e1bc fix(genpc,parser,pcinterp): pcode wider regression sweep (Tier 1 #3)
Six more silent miscompiles in the pcode path, all uncovered by a
new pcode regression sweep that exercises the full PRG surface a
dynamic FrbCompile body could legitimately use.

  * **xBase-keyword shadowing of variable names.** parseIdentStmt
    and parseExprStmt's fallback switches consumed an entire line
    when the leading IDENT matched LABEL / REPORT / ACCEPT / INPUT
    / NOTE / etc. Those words are also extremely common LOCAL /
    PRIVATE names — `LOCAL label ; label := "x"` had the
    assignment swallowed because the switch didn't peek at the
    next token. Both switches now look at peek(1): an assignment
    operator, [], (, -, ++, --, or `.` means it's a variable /
    call / member access, not the xBase command, and we fall
    through to expression parsing. Real silent bug — bit
    test_frb_pcode_sweep's `LOCAL label` declaration.

  * **`arr[i]` indexing not implemented in genpc.** ast.IndexExpr
    fell through to the default PushNil path, so any indexed read
    in a pcode-mode body returned NIL. New case emits the array,
    the index, and PcOpArrayPush (the get-op; PcOpArrayPop is the
    set-op — naming follows Harbour convention). Hashes go
    through the same opcode, which already special-cases
    IsHash() in ops_collection.go.

  * **Hash literals not implemented in genpc + dispatch missing
    in pcinterp.** `{ "k" => v, ... }` fell to PushNil. Added
    HashLitExpr emit (Push key, Push value pairs, then PcOpHashGen
    with count). Also wired up the PcOpHashGen dispatch in
    execPcodeBody — it had been declared in pcode.go since the
    initial design but the case statement was never added, so
    even hand-written modules couldn't use hashes.

  * **`x++` / `x--` postfix were silent no-ops.** PostfixExpr fell
    to PushNil and the surrounding ExprStmt then popped the NIL.
    DO WHILE loops with `n--` couldn't terminate; FOR loops with
    `i++` in the body were broken too. New case: PushLocal +
    LocalAddInt(±1).

  * **BlockExpr (`{|p| body }`) wasn't compiled.** Eval(b, n)
    inside a pcode body returned NIL. Added: build the body in a
    sub-codebuffer with the block's params occupying its locals,
    emit PcOpRetValue at the end, then PushBlock with the
    serialized bytes. Format extended with a uint16 nParams field
    so the runtime's PcOpPushBlock dispatch can set
    PcodeFunc.Params correctly — without it, ExecPcode's
    Frame(0, 0) pulled none of Eval's args and the block saw
    every parameter as NIL.

  * **All g.locals accesses were case-sensitive.** PRG is case-
    insensitive, but the pcode generator stored block params via
    strings.ToUpper while every other lookup site (function decl,
    mid-decl, ForStmt, IdentExpr read, AssignExpr write,
    PostfixExpr) used the raw .Name. So `{|x| x*x }` stored "X"
    but read "x" and missed. Normalized: all insertions and all
    lookups now go through strings.ToUpper.

  * **SeqExpr in pcode** — added the matching emit for comma-
    separated expression lists in code blocks (`{|| a, b, c }`).
    Same shape as the gengo SeqExpr case from Wave 1.

Test fixture: tests/frb/test_frb_pcode_sweep.prg covers 14 shapes
(string ops, arithmetic, comparison chains, array indexing, DO
WHILE with postfix, nested IF, IIf, hash literal + indexing,
block + Eval, character iteration). All 14 pass. Wired into the
FRB runner — suite now stands at 7/7.

Other gates green:
  go test ./...      : PASS
  FiveSql2 SQL:1999  : 43/43
  Harbour compat     : 56/56
  std.ch suite       : 15/15
  FRB suite          : 7/7

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-04 11:32:38 +09:00

Five — Harbour + Go Fusion Language

Harbour PRG 코드를 네이티브 Go 바이너리로 컴파일하는 퓨전 언어.

30년간 축적된 Harbour/xBase 비즈니스 로직을 Go의 성능, 동시성, 크로스 플랫폼 위에서 실행합니다.

employees.prg  →  five build  →  employees (단일 실행파일, 18MB)

주요 특징

  • Harbour 문법 100% 지원 (CLASS, CODE BLOCK, BEGIN SEQUENCE, ...)
  • Go 네이티브 바이너리 출력 (CGo 없음, 순수 Go)
  • DBF/NTX/CDX 데이터베이스 엔진 내장
  • 479개 RTL 내장 함수
  • FiveSql2: DBF 위에서 SQL:1999 쿼리 (43/43 테스트 통과)
  • Goroutine/Channel 확장 (GO BLOCK, CHANNEL)
  • @byref 참조 전달, mutable closure
  • 대화형 디버거 (TUI/CLI)

빌드 방법

1. Go 설치

Five는 Go 1.21 이상이 필요합니다.

Linux/WSL:

# 이미 설치되어 있는지 확인
go version

# 없으면 설치
wget https://go.dev/dl/go1.22.5.linux-amd64.tar.gz
sudo rm -rf /usr/local/go
sudo tar -C /usr/local -xzf go1.22.5.linux-amd64.tar.gz
echo 'export PATH=$PATH:/usr/local/go/bin:$HOME/go/bin' >> ~/.bashrc
source ~/.bashrc
go version

macOS (Apple Silicon — M1/M2/M3/M4):

brew install go
# 또는 직접 다운로드:
wget https://go.dev/dl/go1.22.5.darwin-arm64.tar.gz
sudo tar -C /usr/local -xzf go1.22.5.darwin-arm64.tar.gz
echo 'export PATH=$PATH:/usr/local/go/bin:$HOME/go/bin' >> ~/.zshrc
source ~/.zshrc

macOS (Intel):

brew install go
# 또는 직접 다운로드:
wget https://go.dev/dl/go1.22.5.darwin-amd64.tar.gz
sudo tar -C /usr/local -xzf go1.22.5.darwin-amd64.tar.gz
echo 'export PATH=$PATH:/usr/local/go/bin:$HOME/go/bin' >> ~/.zshrc
source ~/.zshrc

Windows:

https://go.dev/dl/ 에서 .msi 설치

2. Five 컴파일러 빌드

git clone https://gitea.fivego.org/fivedev/five.git
cd five
go build -o five ./cmd/five

빌드 확인:

./five version

3. PRG 프로그램 컴파일 및 실행

단일 파일:

# 컴파일
./five build examples/hello.prg -o hello

# 실행
./hello

다중 파일 (FiveSql2 등):

./five build _FiveSql2/test/test_sql1999.prg _FiveSql2/src/*.prg -o test_sql
./test_sql

4. 테스트 실행

# Go 유닛 테스트
go test ./...

# FiveSql2 SQL 테스트 (43/43)
./five build _FiveSql2/test/test_sql1999.prg _FiveSql2/src/*.prg -o /tmp/test_sql
cd /tmp && ./test_sql

# Harbour 호환 테스트 (51/51)
./five build tests/compat_harbour.prg -o /tmp/test_compat
/tmp/test_compat

Five 명령어

five run <file.prg>              컴파일 후 즉시 실행
five build <file.prg> [-o out]   네이티브 바이너리 생성
five gen <file.prg>              생성된 Go 코드 출력 (디버깅용)
five debug <file.prg>            대화형 디버거 실행
five version                     버전 정보

Hello World

// hello.prg
PROCEDURE Main()
   ? "Hello, Five!"
   ? "Date:", Date()
   ? "Time:", Time()
RETURN
./five build hello.prg -o hello && ./hello

SQL 예제

// sql_demo.prg
#include "FiveSqlDef.ch"

PROCEDURE Main()
   // 테이블 생성
   five_SQL("CREATE TABLE employees (id INTEGER, name CHAR(30), salary NUMERIC(12,2))")

   // 데이터 삽입
   five_SQL("INSERT INTO employees (id, name, salary) VALUES (1, 'Alice', 8000)")
   five_SQL("INSERT INTO employees (id, name, salary) VALUES (2, 'Bob', 7000)")

   // SQL 쿼리
   LOCAL aR := five_SQL("SELECT name, salary FROM employees WHERE salary > 6000 ORDER BY salary DESC")

   ? "Results:", Len(aR[2]), "rows"
   LOCAL i
   FOR i := 1 TO Len(aR[2])
      ? "  ", aR[2][i][1], aR[2][i][2]
   NEXT
RETURN
./five build sql_demo.prg _FiveSql2/src/*.prg -o sql_demo && ./sql_demo

프로젝트 구조

five/
├── cmd/five/          Five CLI (main entry point)
├── compiler/          PRG → Go 컴파일러
│   ├── lexer/         토크나이저
│   ├── parser/        구문 분석기
│   ├── analyzer/      의미 분석기
│   ├── gengo/         Go 코드 생성기
│   └── pp/            전처리기 (#include, #define)
├── hbrt/              런타임 (VM, Stack, Value, Class)
├── hbrtl/             RTL 표준 라이브러리 (479개 함수)
├── hbrdd/             RDD 데이터베이스 엔진
│   ├── dbf/           DBF 파일 드라이버
│   ├── ntx/           NTX 인덱스 드라이버
│   ├── cdx/           CDX 인덱스 드라이버
│   └── mem/           메모리 RDD
├── _FiveSql2/         SQL:1999 엔진 (PRG)
│   ├── src/           SQL 엔진 소스 (14 파일, 10,458 LOC)
│   └── test/          SQL 테스트 스위트
├── tests/             호환성 테스트
├── examples/          예제 프로그램
└── docs/              기술 문서

현재 상태

항목 수치
Go 프로덕션 코드 ~36,000 LOC
RTL 내장 함수 479개
RDD 드라이버 4종 (DBF, NTX, CDX, Memory)
FiveSql2 테스트 43/43 (100%)
호환 테스트 51/51 (100%)
Go 테스트 ALL PASS

라이선스

Copyright (c) 2025-2026 Charles KWON OhJun (charleskwonohjun@gmail.com) All rights reserved.

Description
Five — Harbour+Go Fusion Language (PRG→Go native binary)
Readme 64 MiB
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Go 57.9%
xBase 22%
C 19.5%
Shell 0.5%
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