mirror/zig
1
0
Fork 0
mirror of https://github.com/ziglang/zig.git synced 2026-02-13 12:59:04 +00:00
Code Issues Packages Projects Releases Wiki Activity

stage2 astgen for LabeledBlock

Browse Source
This commit is contained in:
Andrew Kelley 2020-08-14 16:42:36 -07:00
parent 9a5a1013a8
commit b49d3672f3
2 changed files with 17 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
src-self-hosted/Module.zig
View File

@ -737,6 +737,7 @@ pub const Scope = struct {
arena: *Allocator,
/// The first N instructions in a function body ZIR are arg instructions.
instructions: std.ArrayListUnmanaged(*zir.Inst) = .{},
label: ?ast.TokenIndex = null,
};
/// This is always a `const` local and importantly the `inst` is a value type, not a pointer.

22
src-self-hosted/astgen.zig
View File

@ -129,14 +129,24 @@ fn labeledBlockExpr(
const tracy = trace(@src());
defer tracy.end();
const statements = block_node.statements();
var block_scope: Scope.GenZIR = .{
.parent = parent_scope,
.decl = parent_scope.decl().?,
.arena = parent_scope.arena(),
.instructions = .{},
.label = block_node.label,
};
defer block_scope.instructions.deinit(mod.gpa);
if (statements.len == 0) {
// Hot path for `{}`.
return rlWrapVoid(mod, parent_scope, rl, &block_node.base, {});
}
try blockExprStmts(mod, &block_scope.base, &block_node.base, block_node.statements());
return mod.failNode(parent_scope, &block_node.base, "TODO implement labeled blocks", .{});
const tree = parent_scope.tree();
const src = tree.token_locs[block_node.lbrace].start;
const block = try addZIRInstBlock(mod, parent_scope, src, .{
.instructions = try block_scope.arena.dupe(*zir.Inst, block_scope.instructions.items),
});
return &block.base;
}
fn blockExprStmts(mod: *Module, parent_scope: *Scope, node: *ast.Node, statements: []*ast.Node) !void {