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AstGen: compile error for unable to infer array size

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This commit is contained in:
Andrew Kelley 2021-04-23 11:14:11 -07:00
parent 0262dda9b8
commit 183ee0965f
2 changed files with 21 additions and 3 deletions
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3
BRANCH_TODO
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@ -34,6 +34,9 @@
* sort compile errors before presenting them to eliminate nondeterministic error reporting
* when handling decls, catch the error and continue, so that
AstGen can report more than one compile error.
const container_name_hash: Scope.NameHash = if (found_pkg) |pkg|
pkg.namespace_hash
else

21
src/AstGen.zig
View File

@ -2455,9 +2455,16 @@ fn arrayType(gz: *GenZir, scope: *Scope, rl: ResultLoc, node: ast.Node.Index) !Z
const astgen = gz.astgen;
const tree = &astgen.file.tree;
const node_datas = tree.nodes.items(.data);
const node_tags = tree.nodes.items(.tag);
const main_tokens = tree.nodes.items(.main_token);
// TODO check for [_]T
const len = try expr(gz, scope, .{ .ty = .usize_type }, node_datas[node].lhs);
const len_node = node_datas[node].lhs;
if (node_tags[len_node] == .identifier and
mem.eql(u8, tree.tokenSlice(main_tokens[len_node]), "_"))
{
return astgen.failNode(len_node, "unable to infer array size", .{});
}
const len = try expr(gz, scope, .{ .ty = .usize_type }, len_node);
const elem_type = try typeExpr(gz, scope, node_datas[node].rhs);
const result = try gz.addBin(.array_type, len, elem_type);
@ -2468,9 +2475,17 @@ fn arrayTypeSentinel(gz: *GenZir, scope: *Scope, rl: ResultLoc, node: ast.Node.I
const astgen = gz.astgen;
const tree = &astgen.file.tree;
const node_datas = tree.nodes.items(.data);
const node_tags = tree.nodes.items(.tag);
const main_tokens = tree.nodes.items(.main_token);
const extra = tree.extraData(node_datas[node].rhs, ast.Node.ArrayTypeSentinel);
const len = try expr(gz, scope, .{ .ty = .usize_type }, node_datas[node].lhs);
const len_node = node_datas[node].lhs;
if (node_tags[len_node] == .identifier and
mem.eql(u8, tree.tokenSlice(main_tokens[len_node]), "_"))
{
return astgen.failNode(len_node, "unable to infer array size", .{});
}
const len = try expr(gz, scope, .{ .ty = .usize_type }, len_node);
const elem_type = try typeExpr(gz, scope, extra.elem_type);
const sentinel = try expr(gz, scope, .{ .ty = elem_type }, extra.sentinel);