625 lines
18 KiB
Plaintext
625 lines
18 KiB
Plaintext
// Port of cmd/w6c/main.c.
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package main;
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import os;
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import strings;
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import syntax;
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import wcc;
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fn cstreq(a: *u8, lit: str) bool = {
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let n: u64 = lit.len: u64;
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let i: u64 = 0u64;
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for (i < n) {
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let li: i32 = i: i32;
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if (a[i] != lit[li]) { return false; };
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i += 1u64;
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};
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if (a[i] != 0u8) { return false; };
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return true;
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};
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fn cstrlen(p: *u8) u64 = {
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let n: u64 = 0u64;
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for (p[n] != 0u8) { n += 1u64; };
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return n;
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};
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// pathstr — view a NUL-terminated *u8 as a str. lib/os entrypoints
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// take str post-task-#23; this bridges call sites that still hold
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// C-string paths (argv entries, arena-allocated buffers).
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fn pathstr(p: *u8) str = {
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let r: str;
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r.ptr = p;
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r.len = cstrlen(p): i32;
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return r;
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};
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fn slurp(path: *u8) (*u8, u64) = {
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let fd: i32 = os.open(pathstr(path), os.flag.RDONLY, 0i32);
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if (fd < 0) { return nil, 0u64; };
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let szr: (i64 | os.oserror) = os.filesize(fd);
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let n: i64 = 0i64;
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match (szr) {
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case let v: i64 => n = v;
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case let e: os.oserror => { os.close(fd); return nil, 0u64; };
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};
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let nz: u64 = n: u64;
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let buf: []u8 = alloc([], nz + 1u64)!;
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buf.len = (nz + 1u64): i32;
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let rr: (i64 | os.oserror) = os.readall(fd, buf.ptr, nz);
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os.close(fd);
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let got: i64 = 0i64;
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match (rr) {
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case let v: i64 => got = v;
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case let e: os.oserror => return nil, 0u64;
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};
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if (got != n) { return nil, 0u64; };
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buf[nz] = 0u8;
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return buf.ptr, nz;
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};
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fn exportownermatches(buf: *u8, n: u64, path: *u8) bool = {
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let prefix: str = "//ww:module ";
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let pn: u64 = cstrlen(path);
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let poff: u64 = prefix.len: u64;
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let need: u64 = poff + pn + 1u64;
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if (n < need) { return false; };
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let i: u64 = 0u64;
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for (i < poff) {
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if (buf[i] != prefix.ptr[i]) { return false; };
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i += 1u64;
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};
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i = 0u64;
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for (i < pn) {
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if (buf[poff + i] != path[i]) { return false; };
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i += 1u64;
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};
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return buf[need - 1u64] == 10u8;
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};
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type importmap = struct {
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source: *u8,
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path: *u8,
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seen: bool,
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};
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fn allocimportmaps(count: i32) ([]importmap | nomem) = {
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let value: []importmap = alloc([], count: u64)?;
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return value;
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};
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fn allocimportptrs(count: i32) ([]*u8 | nomem) = {
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let value: []*u8 = alloc([], count: u64)?;
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return value;
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};
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fn allocnodeptrs(count: i32) ([]*syntax.node | nomem) = {
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let value: []*syntax.node = alloc([], count: u64)?;
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return value;
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};
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fn canonicalpkgname(path: str, name: str) bool = {
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let prefix: str = "__wwi_";
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if (name.len != prefix.len + path.len * 2) { return false; };
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let i: i32 = 0;
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for (i < prefix.len) {
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if (name[i] != prefix[i]) { return false; };
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i += 1;
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};
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i = 0;
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for (i < path.len) {
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let hi: u8 = path[i] >> 4u8;
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let lo: u8 = path[i] & 15u8;
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let hib: u8 = hi + 48u8;
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let lob: u8 = lo + 48u8;
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if (hi >= 10u8) { hib = hi - 10u8 + 97u8; };
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if (lo >= 10u8) { lob = lo - 10u8 + 97u8; };
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if (name[prefix.len + i * 2] != hib
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|| name[prefix.len + i * 2 + 1] != lob) { return false; };
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i += 1;
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};
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return true;
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};
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// A paired interface owns PATH's declared name. Compiler-private names keep
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// transitive fact sections semantic and are ignored when a real name exists.
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fn importpkgname(asts: []*syntax.node, paths: []*u8, nasts: i32, path: str,
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primary: *syntax.node, conflict: *bool) str = {
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let name: str;
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let placeholder: str;
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let i: i32 = 0;
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for (i < nasts) {
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if (!cstreq(paths[i], path)) { i += 1; continue; };
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let f: *syntax.node = asts[i];
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let p: *syntax.node = nil;
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if (f != nil) { p = f.body; };
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for (p != nil) {
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if (p.nmod.len > 0 && p.pkgname.len > 0
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&& syntax.streq(p.nmod, path)) {
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if (canonicalpkgname(path, p.pkgname)) {
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placeholder = p.pkgname;
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} else { if (name.len > 0
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&& !syntax.streq(name, p.pkgname)) {
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*conflict = true;
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let empty: str;
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return empty;
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} else { name = p.pkgname; }; };
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};
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p = p.next;
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};
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i += 1;
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};
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let p: *syntax.node = nil;
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if (primary != nil) { p = primary.body; };
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for (p != nil) {
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if (p.nmod.len > 0 && p.pkgname.len > 0
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&& syntax.streq(p.nmod, path)) {
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if (canonicalpkgname(path, p.pkgname)) {
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placeholder = p.pkgname;
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} else { if (name.len > 0 && !syntax.streq(name, p.pkgname)) {
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*conflict = true;
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let empty: str;
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return empty;
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} else { name = p.pkgname; }; };
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};
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p = p.next;
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};
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if (name.len == 0) { name = placeholder; };
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return name;
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};
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fn bindimportnames(list: *syntax.node, asts: []*syntax.node, paths: []*u8,
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nasts: i32,
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primary: *syntax.node, testsupport: *u8) bool = {
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let u: *syntax.node = list;
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for (u != nil) {
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if (u.kind == syntax.nkind.N_USE && u.usepath.len > 0) {
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let reserved: bool = testsupport != nil
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&& cstreq(testsupport, "__wwtest")
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&& syntax.streq(u.usepath, "__wwtest");
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if (!reserved) {
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let conflict: bool = false;
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let name: str = importpkgname(asts, paths, nasts, u.usepath,
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primary, &conflict);
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if (conflict) {
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let pre: str = "w6c: package ";
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let post: str = " has conflicting declared names in export data\n";
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os.write(2, pre.ptr, pre.len: u64);
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os.write(2, u.usepath.ptr, u.usepath.len: u64);
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os.write(2, post.ptr, post.len: u64);
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return false;
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};
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if (name.len > 0) {
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u.usepkgname = name;
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if (u.usealias.len > 0) { u.str = u.usealias; }
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else { u.str = name; };
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} else { if (u.imported == 0) {
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let pre: str = "w6c: import ";
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let post: str = " has no declared package name in direct export data\n";
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os.write(2, pre.ptr, pre.len: u64);
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os.write(2, u.usepath.ptr, u.usepath.len: u64);
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os.write(2, post.ptr, post.len: u64);
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return false;
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} else {
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// A closure-only import may have no declarations in this
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// interface. Its canonical path must never become a leaf
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// qualifier by fallback.
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if (u.usealias.len > 0) { u.str = u.usealias; }
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else { u.str = u.usepath; };
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}; };
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};
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};
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u = u.next;
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};
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return true;
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};
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export fn main(argc: i32, argv: **u8) i32 = {
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let src: *u8 = nil;
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let out: *u8 = nil;
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let wwiout: *u8 = nil; // -I <out.wwi>: M2 export-data producer
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let testsupport: *u8 = nil;
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let testtarget: *u8 = nil;
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let testmode: i32 = 0i32; // #15: `-T` test-mode
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let testpackage: i32 = 0i32;
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let commandpackage: i32 = 0i32;
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let entrymode: i32 = 0i32;
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let sepmode: i32 = 0i32; // -c: #22 M3 separate-compile / primary-
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// only codegen (emit imported==0 decls
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// only; treat `.wwi` deps as external)
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let pathallocation: ([]*u8 | nomem) = allocimportptrs(argc);
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let fileallocation: ([]*u8 | nomem) = allocimportptrs(argc);
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let importpaths: []*u8;
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let importfiles: []*u8;
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let astallocation: ([]*syntax.node | nomem) = allocnodeptrs(argc);
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let importasts: []*syntax.node;
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match (pathallocation) {
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case let value: []*u8 => importpaths = value;
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case nomem => {
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let m: str = "w6c: out of memory\n";
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os.write(2, m.ptr, m.len: u64);
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return 1;
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};
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};
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match (fileallocation) {
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case let value: []*u8 => importfiles = value;
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case nomem => {
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let m: str = "w6c: out of memory\n";
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os.write(2, m.ptr, m.len: u64);
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return 1;
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};
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};
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importpaths.len = argc;
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importfiles.len = argc;
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match (astallocation) {
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case let value: []*syntax.node => importasts = value;
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case nomem => {
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let m: str = "w6c: out of memory\n";
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os.write(2, m.ptr, m.len: u64);
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return 1;
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};
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};
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importasts.len = argc;
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let nimports: i32 = 0;
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let mapallocation: ([]importmap | nomem) = allocimportmaps(argc);
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let importmaps: []importmap;
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match (mapallocation) {
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case let value: []importmap => importmaps = value;
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case nomem => {
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let m: str = "w6c: out of memory\n";
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os.write(2, m.ptr, m.len: u64);
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return 1;
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};
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};
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importmaps.len = argc;
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let nmaps: i32 = 0;
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let i: i32 = 1;
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for (i < argc) {
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let a: *u8 = argv[i];
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if (cstreq(a, "-o")) {
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i += 1;
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if (i >= argc) {
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let m: str = "w6c: -o requires arg\n";
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os.write(2, m.ptr, m.len: u64);
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return 2;
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};
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out = argv[i];
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} else { if (cstreq(a, "-I")) {
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i += 1;
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if (i >= argc) {
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let m: str = "w6c: -I requires arg\n";
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os.write(2, m.ptr, m.len: u64);
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return 2;
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};
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wwiout = argv[i];
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} else { if (cstreq(a, "-T")) {
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testmode = 1i32;
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} else { if (cstreq(a, "--test-package")) {
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testpackage = 1i32;
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} else { if (cstreq(a, "--command-package")) {
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commandpackage = 1i32;
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} else { if (cstreq(a, "--entry")) {
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entrymode = 1i32;
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} else { if (cstreq(a, "--test-support-module")) {
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i += 1;
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if (i >= argc) {
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let m: str = "w6c: --test-support-module requires arg\n";
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os.write(2, m.ptr, m.len: u64);
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return 2;
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};
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testsupport = argv[i];
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} else { if (cstreq(a, "--test-target-package")) {
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i += 1;
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if (i >= argc) {
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let m: str = "w6c: --test-target-package requires arg\n";
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os.write(2, m.ptr, m.len: u64);
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return 2;
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};
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testtarget = argv[i];
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} else { if (cstreq(a, "-c")) {
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sepmode = 1i32;
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} else { if (cstreq(a, "--import")) {
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if (i + 2 >= argc) {
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let m: str = "w6c: --import requires path and file\n";
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os.write(2, m.ptr, m.len: u64);
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return 2;
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};
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importpaths[nimports] = argv[i + 1];
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importfiles[nimports] = argv[i + 2];
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nimports += 1;
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i += 2;
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} else { if (cstreq(a, "--import-map")) {
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if (i + 2 >= argc) {
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let m: str = "w6c: --import-map requires source and path\n";
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os.write(2, m.ptr, m.len: u64);
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return 2;
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};
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importmaps[nmaps].source = argv[i + 1];
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importmaps[nmaps].path = argv[i + 2];
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importmaps[nmaps].seen = false;
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nmaps += 1;
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i += 2;
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} else { if (a[0u64] == 45u8) {
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let m: str = "w6c: unknown flag\n";
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os.write(2, m.ptr, m.len: u64);
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return 2;
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} else {
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if (src != nil) {
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let m: str = "w6c: only one input\n";
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os.write(2, m.ptr, m.len: u64);
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return 2;
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};
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src = a;
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}; }; }; }; }; }; }; }; }; }; }; };
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i += 1;
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};
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if (src == nil) {
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let m: str = "usage: w6c_ww [-T|--test-package] [--command-package] [--entry] [--test-target-package path] [-c] [-I out.wwi] [--import path dep.wwi]... [--import-map source path]... [-o out.s] file.ww\n";
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os.write(2, m.ptr, m.len: u64);
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return 2;
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};
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if (nimports > 0 && sepmode == 0) {
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let m: str = "w6c: --import requires -c\n";
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os.write(2, m.ptr, m.len: u64);
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return 2;
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};
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if (nmaps > 0 && sepmode == 0) {
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let m: str = "w6c: --import-map requires -c\n";
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os.write(2, m.ptr, m.len: u64);
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return 2;
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};
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if ((entrymode != 0 || testpackage != 0 || commandpackage != 0)
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&& sepmode == 0) {
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let m: str = "w6c: --entry, --test-package, and --command-package require -c\n";
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os.write(2, m.ptr, m.len: u64);
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return 2;
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};
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if (testmode != 0 && testpackage != 0) {
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let m: str = "w6c: -T and --test-package are mutually exclusive\n";
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os.write(2, m.ptr, m.len: u64);
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return 2;
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};
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let importi: i32 = 0;
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for (importi < nimports) {
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if (importpaths[importi][0u64] == 0u8) {
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let m: str = "w6c: --import path is empty\n";
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os.write(2, m.ptr, m.len: u64);
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return 2;
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};
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if (importi > 0 && strings.compare(pathstr(importpaths[importi - 1]),
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pathstr(importpaths[importi])) >= 0) {
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let m: str = "w6c: --import paths must be sorted and unique\n";
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os.write(2, m.ptr, m.len: u64);
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return 2;
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};
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importi += 1;
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};
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let mapi: i32 = 0;
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for (mapi < nmaps) {
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if (importmaps[mapi].source[0u64] == 0u8
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|| importmaps[mapi].path[0u64] == 0u8) {
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let m: str = "w6c: --import-map path is empty\n";
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os.write(2, m.ptr, m.len: u64);
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return 2;
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};
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if (mapi > 0 && strings.compare(pathstr(importmaps[mapi - 1].source),
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pathstr(importmaps[mapi].source)) >= 0) {
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let m: str = "w6c: --import-map sources must be sorted and unique\n";
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os.write(2, m.ptr, m.len: u64);
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return 2;
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};
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let direct: bool = false;
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let directi: i32 = 0;
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for (directi < nimports) {
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if (cstreq(importmaps[mapi].path,
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pathstr(importpaths[directi]))) {
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direct = true;
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break;
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};
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directi += 1;
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};
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if (!direct) {
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let m: str = "w6c: --import-map target is not a direct import\n";
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os.write(2, m.ptr, m.len: u64);
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return 2;
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};
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mapi += 1;
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};
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if (testsupport != nil && (sepmode == 0
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|| (!cstreq(testsupport, "test")
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&& !cstreq(testsupport, "__wwtest")))) {
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let m: str = "w6c: invalid --test-support-module\n";
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os.write(2, m.ptr, m.len: u64);
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return 2;
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};
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if (testtarget != nil && (sepmode == 0 || testmode == 0
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|| testtarget[0u64] == 0u8)) {
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let m: str = "w6c: invalid --test-target-package\n";
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os.write(2, m.ptr, m.len: u64);
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return 2;
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};
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if (testtarget != nil) {
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let direct: bool = false;
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importi = 0;
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for (importi < nimports) {
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if (cstreq(importpaths[importi], pathstr(testtarget))) {
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direct = true;
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};
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importi += 1;
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};
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if (!direct) {
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let m: str = "w6c: --test-target-package is not a direct import\n";
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os.write(2, m.ptr, m.len: u64);
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return 2;
|
|
};
|
|
};
|
|
|
|
let importhead: *syntax.node = nil;
|
|
let importtail: *syntax.node = nil;
|
|
importi = 0;
|
|
for (importi < nimports) {
|
|
let ibuf: *u8;
|
|
let ilen: u64;
|
|
ibuf, ilen = slurp(importfiles[importi]);
|
|
if (ibuf == nil) {
|
|
let pre: str = "w6c: import ";
|
|
let mid: str = ": cannot read ";
|
|
let nl: str = "\n";
|
|
let ipath: str = pathstr(importpaths[importi]);
|
|
let ifile: str = pathstr(importfiles[importi]);
|
|
os.write(2, pre.ptr, pre.len: u64);
|
|
os.write(2, ipath.ptr, ipath.len: u64);
|
|
os.write(2, mid.ptr, mid.len: u64);
|
|
os.write(2, ifile.ptr, ifile.len: u64);
|
|
os.write(2, nl.ptr, nl.len: u64);
|
|
return 1;
|
|
};
|
|
if (!exportownermatches(ibuf, ilen, importpaths[importi])) {
|
|
let pre: str = "w6c: import ";
|
|
let mid: str = ": export owner mismatch in ";
|
|
let nl: str = "\n";
|
|
os.write(2, pre.ptr, pre.len: u64);
|
|
os.write(2, importpaths[importi], cstrlen(importpaths[importi]));
|
|
os.write(2, mid.ptr, mid.len: u64);
|
|
os.write(2, importfiles[importi], cstrlen(importfiles[importi]));
|
|
os.write(2, nl.ptr, nl.len: u64);
|
|
return 1;
|
|
};
|
|
let il: syntax.lex;
|
|
syntax.lexinit(&il, strings.dup(pathstr(importfiles[importi])), ibuf, ilen);
|
|
let ips: syntax.parser;
|
|
syntax.parserinit(&ips, &il);
|
|
let imod: str = pathstr(importpaths[importi]);
|
|
ips.pathmod = imod;
|
|
ips.curmod = imod;
|
|
if (testsupport != nil) { ips.testmodule = pathstr(testsupport); };
|
|
let imported: *syntax.node = syntax.parsefile(&ips);
|
|
if (il.errs > 0 || ips.errs > 0) { return 1; };
|
|
importasts[importi] = imported;
|
|
if (!bindimportnames(imported.list, importasts, importpaths, importi + 1,
|
|
nil, testsupport)) { return 1; };
|
|
let d: *syntax.node = imported.list;
|
|
if (d != nil) {
|
|
if (importhead == nil) { importhead = d; }
|
|
else { importtail.next = d; };
|
|
for (d.next != nil) { d = d.next; };
|
|
importtail = d;
|
|
};
|
|
importi += 1;
|
|
};
|
|
|
|
let buf: *u8;
|
|
let blen: u64;
|
|
buf, blen = slurp(src);
|
|
if (buf == nil) {
|
|
let m: str = "w6c: cannot read input\n";
|
|
os.write(2, m.ptr, m.len: u64);
|
|
return 1;
|
|
};
|
|
let l: syntax.lex;
|
|
syntax.lexinit(&l, strings.dup(pathstr(src)), buf, blen);
|
|
let ps: syntax.parser;
|
|
syntax.parserinit(&ps, &l);
|
|
if (testsupport != nil) { ps.testmodule = pathstr(testsupport); };
|
|
// Entry compilation classifies an ordinary command package. The explicit
|
|
// marker carries only that parser fact for non-entry command test variants.
|
|
ps.commandpackage = commandpackage != 0 || entrymode != 0;
|
|
let f: *syntax.node = syntax.parsefile(&ps);
|
|
// Gate cgen on parse-stage errors. Mirrors cmd/w6c/main.c's
|
|
// `if (l.errs || p.errs) return 1;` — broken AST otherwise reaches
|
|
// cgen and emits junk asm with a zero exit (silent miscompile).
|
|
if (l.errs > 0 || ps.errs > 0) { return 1; };
|
|
let use: *syntax.node = f.list;
|
|
for (use != nil) {
|
|
if (use.kind == syntax.nkind.N_USE && use.usepath.len != 0) {
|
|
let source: str = use.usesource;
|
|
if (source.len == 0) { source = use.usepath; };
|
|
mapi = 0;
|
|
for (mapi < nmaps) {
|
|
if (syntax.streq(source,
|
|
pathstr(importmaps[mapi].source))) {
|
|
use.usepath = pathstr(importmaps[mapi].path);
|
|
importmaps[mapi].seen = true;
|
|
break;
|
|
};
|
|
mapi += 1;
|
|
};
|
|
};
|
|
use = use.next;
|
|
};
|
|
mapi = 0;
|
|
for (mapi < nmaps) {
|
|
if (!importmaps[mapi].seen) {
|
|
let m: str = "w6c: --import-map source is not in primary input\n";
|
|
os.write(2, m.ptr, m.len: u64);
|
|
return 2;
|
|
};
|
|
mapi += 1;
|
|
};
|
|
// A later direct interface may supply metadata for an origin section used
|
|
// by an earlier interface, so bind once more against the complete set.
|
|
importi = 0;
|
|
for (importi < nimports) {
|
|
if (!bindimportnames(importasts[importi].list, importasts, importpaths,
|
|
nimports,
|
|
nil, testsupport)) { return 1; };
|
|
importi += 1;
|
|
};
|
|
if (!bindimportnames(f.list, importasts, importpaths, nimports, f,
|
|
testsupport)) {
|
|
return 1;
|
|
};
|
|
if (testtarget != nil) {
|
|
let seen: i32 = 0;
|
|
let targetuse: *syntax.node = f.list;
|
|
for (targetuse != nil) {
|
|
if (targetuse.kind == syntax.nkind.N_USE
|
|
&& targetuse.imported == 0
|
|
&& syntax.streq(targetuse.usepath, pathstr(testtarget))) {
|
|
targetuse.str = targetuse.usepath;
|
|
seen += 1;
|
|
};
|
|
targetuse = targetuse.next;
|
|
};
|
|
if (seen != 1) {
|
|
let m: str = "w6c: generated test target import is not unique\n";
|
|
os.write(2, m.ptr, m.len: u64);
|
|
return 2;
|
|
};
|
|
};
|
|
if (importhead != nil) {
|
|
importtail.next = f.list;
|
|
f.list = importhead;
|
|
};
|
|
|
|
// cgen writes directly to fd 1; dup2 keeps that implementation private.
|
|
if (out != nil) {
|
|
let ofd: i32 = os.open(pathstr(out),
|
|
os.flag.WRONLY | os.flag.CREATE | os.flag.TRUNC, 420i32); // 0o644
|
|
if (ofd < 0) {
|
|
let m: str = "w6c: cannot open output\n";
|
|
os.write(2, m.ptr, m.len: u64);
|
|
return 1;
|
|
};
|
|
if (os.dup2(ofd, 1i32) < 0) {
|
|
let m: str = "w6c: dup2 failed\n";
|
|
os.write(2, m.ptr, m.len: u64);
|
|
os.close(ofd);
|
|
return 1;
|
|
};
|
|
os.close(ofd);
|
|
};
|
|
|
|
let testmodule: str;
|
|
if (testsupport != nil) { testmodule = pathstr(testsupport); };
|
|
let testtargetmodule: str;
|
|
if (testtarget != nil) { testtargetmodule = pathstr(testtarget); };
|
|
let interfaceout: str;
|
|
if (wwiout != nil) { interfaceout = pathstr(wwiout); };
|
|
return wcc.compilefile(f, testmode, testpackage, testmodule,
|
|
testtargetmodule, sepmode, interfaceout, entrymode);
|
|
};
|