ed/pikuma_ps1
1
0
Fork 0
mirror of https://github.com/Ed94/pikuma_ps1.git synced 2026-07-12 20:31:25 -07:00
Code Issues Packages Projects Releases Wiki Activity

metaprogram improvements

Browse Source
This commit is contained in:
Edward R. Gonzalez
2026-07-09 01:17:35 -04:00
parent 602a0b46d8
commit 8541713d0c
4 changed files with 1712 additions and 1594 deletions
Download Patch File Download Diff File Expand all files Collapse all files
scripts/duffle.lua
+478
View File
@@ -0,0 +1,478 @@
-- duffle.lua
--
-- Shared primitives + domain tables for the tape-atom metaprograms.
-- Both `tape_atom_annotation_pass.lua` and `tape_atom.offset_gen.meta.lua`
-- `require("duffle")` for these.
--
-- 5.3-compatible Lua (no 5.4/5.5-only features):
-- - no <close> / <toclose>
-- - no continue keyword
-- - no string.dump improvements
-- - LuaJIT 5.1+extensions model is the primary target
--
-- No :match / :gmatch regex use anywhere; all delimiter-splitting is
-- hand-rolled or via LPeg (the regex-free PEG library).
--
-- Phase 3: the hot lexer primitives are LPeg-backed where it pays off.
-- The hand-rolled variants remain for callers that need a fallback.
local M = {}
-- ════════════════════════════════════════════════════════════════════════════
-- Section 0: LPeg patterns (compiled once at module load)
-- ════════════════════════════════════════════════════════════════════════════
--
-- LPeg is a PEG library (no regex). All patterns below are first-class
-- pattern values; they're cheap to build and reuse.
--
-- Note: lpeg is required lazily because Lua 5.5 may not have it on its
-- cpath at the same location as LuaJIT. We attempt the require and fall
-- back to the hand-rolled implementations if it fails.
local lpeg_ok, lpeg = pcall(require, "lpeg")
local lpeg_lib = nil
local lpeg_alpha_pat, lpeg_alnum_pat, lpeg_ident_pat
local lpeg_str_or_cmt_pat, lpeg_ws_and_cmt_pat
local lpeg_scan_to_target_pat -- generic "anything but target or balanced group" matcher
if lpeg_ok then
lpeg_lib = lpeg
local P, S, R = lpeg.P, lpeg.S, lpeg.R
-- Character class patterns
local alpha_pat = R("AZ", "az") + P("_")
local digit_pat = R("09")
lpeg_alnum_pat = alpha_pat + digit_pat
-- Identifier: alpha followed by zero+ alnum. Capture as a string.
lpeg_alpha_pat = alpha_pat
lpeg_ident_pat = lpeg.C(alpha_pat * lpeg_alnum_pat^0)
-- String literal: "..." with backslash escapes.
local lpeg_str_pat = P('"') * (P(1) - S('"\\') + P('\\') * P(1))^0 * P('"')
-- Char literal: '...' with backslash escapes.
local lpeg_chr_pat = P("'") * (P(1) - S("'\\") + P('\\') * P(1))^0 * P("'")
-- Line comment: // ... to end-of-line.
local lpeg_line_cmt_pat = P("//") * (P(1) - S("\n"))^0
-- Block comment: /* ... */ (no nesting per C standard).
local lpeg_block_cmt_pat = P("/*") * (P(1) - P("*/"))^0 * P("*/")
-- String or comment (any of the four forms).
lpeg_str_or_cmt_pat = lpeg_str_pat + lpeg_chr_pat + lpeg_line_cmt_pat + lpeg_block_cmt_pat
-- Whitespace + comment skipper: zero+ (whitespace run | string | comment).
local ws_pat = S(" \t\n\r\v\f")
lpeg_ws_and_cmt_pat = (ws_pat + lpeg_str_or_cmt_pat)^0
-- Generic "skip until target, but step over balanced groups" matcher.
-- Used by scan_to_char for non-ident / non-bracket chars.
-- We accept any single char except the target.
-- The balanced-group stepping is handled by the caller (via read_balanced).
lpeg_scan_to_target_pat = function(target)
return (P(1) - P(target))^0
end
end
-- ════════════════════════════════════════════════════════════════════════════
-- Section 1: character classification (byte-based for hot loops)
-- ════════════════════════════════════════════════════════════════════════════
--
-- Two APIs:
-- is_space(c), is_alpha(c), etc. — accept a single-char STRING (legacy)
-- is_space_byte(b), is_alpha_byte(b), etc. — accept a single-byte INTEGER
--
-- The byte-based versions are 5-10x faster in tight loops because they
-- avoid the string allocation per s:sub(i, i) call.
-- Whitespace characters per C locale.
function M.is_space_byte(b)
return b == 32 or b == 9 or b == 10 or b == 13 or b == 11 or b == 12
end
-- Letters (a-z, A-Z) and underscore.
function M.is_alpha_byte(b)
if not b then return false end
if b >= 97 and b <= 122 then return true end -- 'a'..'z'
if b >= 65 and b <= 90 then return true end -- 'A'..'Z'
return b == 95 -- '_'
end
-- Single digit.
function M.is_digit_byte(b) return b and b >= 48 and b <= 57 end
-- Letter OR digit OR underscore.
function M.is_alnum_byte(b) return M.is_alpha_byte(b) or M.is_digit_byte(b) end
-- String-based wrappers (kept for callers that already have a single-char
-- string; the byte versions are what the hot loops should call).
function M.is_space(c)
if type(c) == "number" then return M.is_space_byte(c) end
return c == " " or c == "\t" or c == "\n" or c == "\r" or c == "\v" or c == "\f"
end
function M.is_alpha(c)
if type(c) == "number" then return M.is_alpha_byte(c) end
if not c or #c == 0 then return false end
if c >= "a" and c <= "z" then return true end
if c >= "A" and c <= "Z" then return true end
return c == "_"
end
function M.is_digit(c)
if type(c) == "number" then return M.is_digit_byte(c) end
return c and c >= "0" and c <= "9"
end
function M.is_alnum(c) return M.is_alpha(c) or M.is_digit(c) end
-- ════════════════════════════════════════════════════════════════════════════
-- Section 2: string primitives
-- ════════════════════════════════════════════════════════════════════════════
-- Trim leading and trailing whitespace from a string.
function M.trim(s)
local a = 1
while a <= #s and M.is_space_byte(s:byte(a)) do a = a + 1 end
local b = #s
while b >= a and M.is_space_byte(s:byte(b)) do b = b - 1 end
return s:sub(a, b)
end
-- Linear-search for a single-byte target in a string.
-- (Phase 3 retained this for places where LPeg is overkill.)
function M.find_byte(haystack, target, start)
for i = start or 1, #haystack do
if haystack:byte(i) == target then return i end
end
return nil
end
-- Returns the directory portion of a path.
function M.dirname(path)
local last_sep = 0
for i = 1, #path do
if path:byte(i) == 47 or path:byte(i) == 92 then last_sep = i end -- '/' or '\\'
end
if last_sep == 0 then return "." end
return path:sub(1, last_sep - 1)
end
-- Returns the basename of a path, with the file extension stripped.
function M.basename_no_ext(path)
local last_sep = 0
for i = 1, #path do
if path:byte(i) == 47 or path:byte(i) == 92 then last_sep = i end
end
local a = last_sep + 1
local last_dot = #path + 1
for i = #path, a, -1 do
if path:byte(i) == 46 then last_dot = i; break end -- '.'
end
return path:sub(a, last_dot - 1)
end
-- ════════════════════════════════════════════════════════════════════════════
-- Section 3: I/O primitives
-- ════════════════════════════════════════════════════════════════════════════
function M.read_file(path)
local f = io.open(path, "r")
if not f then error("Cannot open " .. path) end
local content = f:read("*a")
f:close()
return content
end
function M.write_file(path, content)
local f = io.open(path, "w")
if not f then error("Cannot write " .. path) end
f:write(content)
f:close()
end
function M.ensure_dir(path)
local is_win = package.config:sub(1, 1) == "\\"
os.execute(is_win and ('if not exist "' .. path .. '" mkdir "' .. path .. '"')
or ('mkdir -p "' .. path .. '" 2>/dev/null'))
end
-- ════════════════════════════════════════════════════════════════════════════
-- Section 4: C-language scanner primitives
-- ════════════════════════════════════════════════════════════════════════════
-- LPeg-backed skipper when LPeg is available, hand-rolled fallback otherwise.
-- Returns position just past the construct, or `i` unchanged if no
-- string/comment starts at position i.
function M.skip_str_or_cmt(s, i)
if lpeg_ok then
local new_pos = lpeg.match(lpeg_str_or_cmt_pat, s, i)
if new_pos then return new_pos end
return i
end
-- Hand-rolled fallback (kept for builds where LPeg isn't available).
local c = s:byte(i)
if c == 34 or c == 39 then -- '"' or '\''
i = i + 1
while i <= #s do
local b = s:byte(i)
if b == 92 then i = i + 2 -- '\\'
elseif b == c then return i + 1
else i = i + 1 end
end
return #s + 1
elseif c == 47 then -- '/'
local nx = s:byte(i + 1)
if nx == 47 then -- '//'
while i <= #s and s:byte(i) ~= 10 do i = i + 1 end
return i
elseif nx == 42 then -- '/*'
i = i + 2
while i <= #s - 1 do
if s:byte(i) == 42 and s:byte(i + 1) == 47 then -- '*/'
return i + 2
end
i = i + 1
end
return #s + 1
end
end
return i
end
-- Skip whitespace AND C-style comments starting at position i.
-- LPeg-backed when available; ~5-10x faster than the hand-rolled version.
function M.skip_ws_and_cmt(s, i)
if lpeg_ok then
local new_pos = lpeg.match(lpeg_ws_and_cmt_pat, s, i)
if new_pos then return new_pos end
return i
end
-- Hand-rolled fallback.
local len = #s
while i <= len do
if M.is_space_byte(s:byte(i)) then
i = i + 1
else
local nx = M.skip_str_or_cmt(s, i)
if nx > i then i = nx else break end
end
end
return i
end
-- Read a C-style identifier (alpha followed by zero+ alnum) starting at
-- position i. Returns the identifier string + the position just past it,
-- or nil + i if no identifier starts here.
function M.read_ident(s, i)
if lpeg_ok then
local result = lpeg.match(lpeg_ident_pat, s, i)
if result then return result, i + #result end
return nil, i
end
-- Hand-rolled fallback.
if not M.is_alpha_byte(s:byte(i)) then return nil, i end
local a = i
i = i + 1
while i <= #s and M.is_alnum_byte(s:byte(i)) do i = i + 1 end
return s:sub(a, i - 1), i
end
-- Read a balanced-delimited group (parens, braces, or brackets) starting
-- at position i. Returns the inner content (between the delimiters) +
-- the position just past the closing delimiter, or nil + i if `s[i]`
-- isn't `open_char`.
--
-- (Hand-rolled; the depth counting makes pure LPeg awkward here.)
function M.read_balanced(s, open_char, close_char, i)
local open_byte = open_char:byte()
if s:byte(i) ~= open_byte then return nil, i end
i = i + 1
local len = #s
local depth = 1
local a = i
while i <= len and depth > 0 do
local c = s:byte(i)
if c == open_byte then
depth = depth + 1
i = i + 1
elseif c == close_char:byte() then
depth = depth - 1
if depth == 0 then break end
i = i + 1
else
local nx = M.skip_str_or_cmt(s, i)
if nx > i then i = nx else i = i + 1 end
end
end
return s:sub(a, i - 1), i + 1
end
-- Convenience specializations of read_balanced.
M.read_parens = function(s, i) return M.read_balanced(s, "(", ")", i) end
M.read_braces = function(s, i) return M.read_balanced(s, "{", "}", i) end
M.read_brackets = function(s, i) return M.read_balanced(s, "[", "]", i) end
-- Scan forward from position `start` until we find a specific single byte
-- `target`, transparently stepping over balanced parens/braces/brackets.
-- Returns the position of `target`, or nil if not found.
function M.scan_to_char(s, target, start)
local target_byte = target:byte()
local i = start
while i <= #s do
local c = s:byte(i)
if c == target_byte then return i end
if c == 40 then local _, a = M.read_balanced(s, "(", ")", i); i = a -- '('
elseif c == 123 then local _, a = M.read_balanced(s, "{", "}", i); i = a -- '{'
elseif c == 91 then local _, a = M.read_balanced(s, "[", "]", i); i = a -- '['
else
local nx = M.skip_str_or_cmt(s, i)
if nx > i then i = nx else i = i + 1 end
end
end
return nil
end
-- Split a brace-body into top-level comma-separated tokens. Honors nested
-- parens/braces/brackets and skips strings/comments.
function M.split_top_level_commas(body)
local tokens = {}
local i = 1
local token_start = 1
while i <= #body do
local c = body:byte(i)
if c == 40 then local _, a = M.read_parens(body, i); i = a -- '('
elseif c == 123 then local _, a = M.read_braces(body, i); i = a -- '{'
elseif c == 91 then local _, a = M.read_brackets(body, i); i = a -- '['
elseif c == 44 then -- ','
tokens[#tokens + 1] = body:sub(token_start, i - 1)
i = i + 1
token_start = i
else
local nx = M.skip_str_or_cmt(body, i)
if nx > i then i = nx; token_start = nx else i = i + 1 end
end
end
local last = body:sub(token_start)
if M.trim(last) ~= "" then tokens[#tokens + 1] = last end
return tokens
end
-- ════════════════════════════════════════════════════════════════════════════
-- Section 5: load_word_counts
-- ════════════════════════════════════════════════════════════════════════════
function M.load_word_counts(metadata_path)
local counts = {}
local content = M.read_file(metadata_path)
local len = #content
local i = 1
local prefix = "WORD_COUNT("
while i <= len do
local nl = M.find_byte(content, 10, i) -- '\n'
local line_end = nl or (len + 1)
local line = content:sub(i, line_end - 1)
local trimmed = M.trim(line)
if trimmed:sub(1, #prefix) == prefix and trimmed:sub(-1) == ")" then
local inner = trimmed:sub(#prefix + 1, #trimmed - 1)
local comma = M.find_byte(inner, 44, 1) -- ','
if comma then
counts[M.trim(inner:sub(1, comma - 1))] =
tonumber(M.trim(inner:sub(comma + 1)))
end
end
i = line_end + 1
end
return counts
end
-- ════════════════════════════════════════════════════════════════════════════
-- Section 6: LineIndex (perf fix — replaces the per-call rescan line_of)
-- ════════════════════════════════════════════════════════════════════════════
function M.LineIndex(source)
local positions = {}
local n = 0
for i = 1, #source do
if source:byte(i) == 10 then -- '\n'
n = n + 1
positions[n] = i
end
end
local function line_of(pos)
local lo, hi = 1, n
while lo <= hi do
local mid = math.floor((lo + hi) / 2)
if positions[mid] <= pos then
lo = mid + 1
else
hi = mid - 1
end
end
return hi + 1
end
return line_of
end
-- ════════════════════════════════════════════════════════════════════════════
-- Section 7: domain tables
-- ════════════════════════════════════════════════════════════════════════════
M.WAVE_CONTEXT_REGS = {
["R_PrimCursor"] = { alias = "R_T7", size = 4, role = "output cursor (prim arena)" },
["R_FaceCursor"] = { alias = "R_T4", size = 4, role = "input cursor (face array)" },
["R_VertBase"] = { alias = "R_T5", size = 4, role = "base pointer (vertex array)" },
["R_OtBase"] = { alias = "R_T6", size = 4, role = "base pointer (ordering table)" },
}
M.MACRO_EXPANSION = {
["phase_init"] = "init",
["phase_bind"] = "bind",
["phase_setup"] = "setup",
["phase_work"] = "work",
["phase_commit"] = "commit",
["phase_terminate"] = "terminate",
["REGION_PRIM_ARENA"] = "prim_arena",
["REGION_FACE_ARENA"] = "face_arena",
["REGION_VERTEX_ARENA"] = "vertex_arena",
["REGION_OT_ARENA"] = "ot_arena",
["REGION_HEAP_3D"] = "heap_3d_models",
["REGION_CDROM_STREAM"] = "cdrom_stream",
["REGION_VRAM"] = "vram_heap",
["CADENCE_FRAME"] = "frame",
["CADENCE_ONCE"] = "once",
["CADENCE_ONDEMAND"] = "ondemand",
}
M.KNOWN_PHASES = {
["init"] = true, ["bind"] = true, ["setup"] = true,
["work"] = true, ["commit"] = true, ["terminate"] = true,
}
M.KNOWN_REGIONS = {
["prim_arena"] = true, ["face_arena"] = true,
["vertex_arena"] = true, ["ot_arena"] = true,
["heap_3d_models"] = true, ["cdrom_stream"] = true,
["vram_heap"] = true,
}
M.KNOWN_CADENCES = {
["frame"] = true, ["once"] = true, ["ondemand"] = true,
}
M.TAPE_ATOM_MACROS = {
["atom_annot"] = { kind = "work", binds = false },
["atom_bind"] = { kind = "bind", binds = true },
["atom_setup"] = { kind = "setup", binds = false },
["atom_commit"] = { kind = "commit", binds = false },
["atom_init"] = { kind = "init", binds = false },
["atom_terminate"] = { kind = "terminate", binds = false },
}
M.ATOM_PRAGMA_KINDS = {
["resource"] = { kind = "string" },
["region"] = { kind = "ident", allowed = M.KNOWN_REGIONS },
["group"] = { kind = "ident" },
["cadence"] = { kind = "ident", allowed = M.KNOWN_CADENCES },
["async"] = { kind = "ident", allowed = { ["true"] = true, ["false"] = true } },
}
-- Expose the lpeg_ok flag so callers can detect the LPeg-back path.
-- True when LPeg was successfully required and the patterns above were
-- compiled at module load time. False when running in fallback mode.
M.lpeg_ok = lpeg_ok
return M