ffi 1.1: parser accepts #objc_call / #jni_call / #jni_static_call
98/98 regression tests pass; ffi-objc-call-01-parse flips from
parse-error xfail to passing.
Shape: `#<intrinsic>(ReturnT)(args...)`. The return-type generic
sits in the first parens, the actual call args in the second. All
three intrinsics share the same parse rule; only the kind tag and
the downstream lowering differ.
token.zig | three new hash_* tags
lexer.zig | matches the directive keywords with the same
isIdentContinue boundary check as the rest
ast.zig | FfiIntrinsicCall node with `kind`, `return_type`,
and `args` fields; FfiIntrinsicKind enum
parser.zig | parseFfiIntrinsicCall — same call-arg loop shape
as Call, with the leading return-type slot
sema.zig | analyzeNode + findNodeAtOffset arms walk the args
+ return-type child nodes
lsp/server.zig | classify the new tokens as ST.keyword
Codegen for the new intrinsic isn't wired yet — examples that
reach the body of a non-suppressed call would fail at lowering.
The current parse test uses `inline if false { ... }` to suppress
the dead branch, so sema/codegen don't see the node. Phase 1.3+
adds the lowering and the gate comes off.
Chess Android + iOS-sim builds clean — no regression on the
existing `objc_msgSend` cast pattern or the JNI helper.
This commit is contained in:
19
src/ast.zig
19
src/ast.zig
@@ -80,6 +80,7 @@ pub const Node = struct {
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c_import_decl: CImportDecl,
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protocol_decl: ProtocolDecl,
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impl_block: ImplBlock,
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ffi_intrinsic_call: FfiIntrinsicCall,
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pub fn declName(self: Data) ?[]const u8 {
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return switch (self) {
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@@ -203,6 +204,24 @@ pub const Call = struct {
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args: []const *Node,
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};
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/// `#objc_call(T)(recv, "sel:", args...)`,
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/// `#jni_call(T)(env, target, "name", "(Sig)R", args...)`,
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/// `#jni_static_call(T)(class, "name", "(Sig)R", args...)`.
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/// The return-type T sits in the first parens; the actual call args
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/// follow in the second parens. Codegen branches on `kind` to pick
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/// the lowering (objc_msgSend / CallXxxMethod / CallStaticXxxMethod).
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pub const FfiIntrinsicKind = enum {
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objc_call,
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jni_call,
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jni_static_call,
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};
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pub const FfiIntrinsicCall = struct {
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kind: FfiIntrinsicKind,
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return_type: *Node,
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args: []const *Node,
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};
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pub const FieldAccess = struct {
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object: *Node,
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field: []const u8,
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@@ -79,6 +79,9 @@ pub const Lexer = struct {
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.{ "#define", Tag.hash_define },
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.{ "#flags", Tag.hash_flags },
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.{ "#inline", Tag.hash_inline },
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.{ "#objc_call", Tag.hash_objc_call },
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.{ "#jni_call", Tag.hash_jni_call },
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.{ "#jni_static_call", Tag.hash_jni_static_call },
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};
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inline for (directives) |d| {
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const keyword = d[0];
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@@ -1495,6 +1495,9 @@ pub const Server = struct {
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.hash_define,
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.hash_flags,
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.hash_inline,
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.hash_objc_call,
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.hash_jni_call,
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.hash_jni_static_call,
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=> ST.keyword,
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.kw_f32, .kw_f64, .kw_Type, .kw_Self => ST.type_,
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@@ -2036,12 +2036,54 @@ pub const Parser = struct {
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const inner = try self.parseExpr();
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return try self.createNode(start, .{ .comptime_expr = .{ .expr = inner } });
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},
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.hash_objc_call, .hash_jni_call, .hash_jni_static_call => {
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return try self.parseFfiIntrinsicCall();
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},
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else => {
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return self.fail("unexpected token in expression");
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},
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}
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}
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/// Parse `#objc_call(T)(recv, "sel:", args...)`,
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/// `#jni_call(T)(env, target, "name", "(Sig)R", args...)`, or
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/// `#jni_static_call(T)(class, "name", "(Sig)R", args...)`. The
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/// return type sits in the first parens; the actual call args
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/// follow in the second.
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fn parseFfiIntrinsicCall(self: *Parser) anyerror!*Node {
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const start = self.current.loc.start;
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const kind: ast.FfiIntrinsicKind = switch (self.current.tag) {
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.hash_objc_call => .objc_call,
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.hash_jni_call => .jni_call,
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.hash_jni_static_call => .jni_static_call,
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else => unreachable,
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};
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self.advance(); // skip the directive
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try self.expect(.l_paren);
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const ret_type = try self.parseTypeExpr();
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try self.expect(.r_paren);
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try self.expect(.l_paren);
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var args = std.ArrayList(*Node).empty;
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while (self.current.tag != .r_paren and self.current.tag != .eof) {
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const arg = try self.parseExpr();
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try args.append(self.allocator, arg);
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if (self.current.tag == .comma) {
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self.advance();
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} else {
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break;
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}
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}
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try self.expect(.r_paren);
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return try self.createNode(start, .{ .ffi_intrinsic_call = .{
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.kind = kind,
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.return_type = ret_type,
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.args = try args.toOwnedSlice(self.allocator),
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} });
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}
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fn parseIfExpr(self: *Parser) anyerror!*Node {
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const start = self.current.loc.start;
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self.advance(); // skip 'if'
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12
src/sema.zig
12
src/sema.zig
@@ -743,6 +743,12 @@ pub const Analyzer = struct {
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try self.analyzeNode(arg);
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}
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},
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.ffi_intrinsic_call => |fic| {
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try self.analyzeNode(fic.return_type);
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for (fic.args) |arg| {
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try self.analyzeNode(arg);
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}
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},
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.field_access => |fa| {
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try self.analyzeNode(fa.object);
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},
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@@ -1187,6 +1193,12 @@ pub fn findNodeAtOffset(node: *Node, offset: u32) ?*Node {
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if (findNodeAtOffset(arg, offset)) |found| return found;
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}
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},
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.ffi_intrinsic_call => |fic| {
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if (findNodeAtOffset(fic.return_type, offset)) |found| return found;
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for (fic.args) |arg| {
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if (findNodeAtOffset(arg, offset)) |found| return found;
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}
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},
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.field_access => |fa| {
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if (findNodeAtOffset(fa.object, offset)) |found| return found;
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},
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@@ -112,6 +112,9 @@ pub const Tag = enum {
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hash_define, // #define (inside #import c { ... })
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hash_flags, // #flags (inside #import c { ... })
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hash_inline, // #inline (protocol layout modifier)
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hash_objc_call, // #objc_call(T)(recv, "sel:", args...)
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hash_jni_call, // #jni_call(T)(env, target, "name", "(Sig)R", args...)
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hash_jni_static_call, // #jni_static_call(T)(class, "name", "(Sig)R", args...)
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triple_minus, // ---
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// Special
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@@ -1 +1 @@
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1
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0
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@@ -1 +1 @@
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/Users/agra/projects/sx/examples/ffi-objc-call-01-parse.sx:21:9: error: unexpected token in expression
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parse-only ok
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