30222813533
79%

Ran 26 Jul 2026 10:42PM UTC

Jobs 1

Files 433

Run time 1min

Badge

Embed ▾

Committed 26 Jul 2026 10:15PM UTC coverage: 75.333% (-0.4%) from 75.716%

Build # 30222813533

Build Type

push

github

Committed by

haveyaseen

Commit Message

feat(compiler): add function literals, closures, and func types

Function literals are valid in expression position with optional return
types, closure over enclosing scope, and immediate invocation. Function
types use func(T): U syntax for parameters and callbacks. Calls on
expression callees (IIFE and stored closures) go through
FunctionCallNode.Callee; go and defer accept anonymous func literals.

Adds parser, typechecker, transformer, and hasher support, a closures
example with golden output, task example:closures, and ROADMAP updates.

Coverage Stats

188 of 401 new or added lines in 17 files covered. (46.88%)

1468 existing lines in 43 files now uncovered.

37264 of 49466 relevant lines covered (75.33%)

1074.87 hits per line

Uncovered Changes

Lines	Coverage	∆	File
57	50.86		forst/internal/typechecker/infer_funclit.go
40	54.12	-6.01%	forst/internal/hasher/hasher.go
39	25.13	-6.28%	forst/internal/hasher/scope_key.go
35	0.0		forst/internal/ast/funclit.go
12	73.33		forst/internal/transformer/go/funclit.go
6	91.26	-7.33%	forst/internal/ast/type.go
6	91.67	-1.14%	forst/internal/parser/expression.go
6	64.85	1.47%	forst/internal/typechecker/infer_expression.go
4	73.41	0.11%	forst/internal/transformer/go/expression.go
4	71.72	2.73%	forst/internal/transformer/go/statement.go
2	37.21	-3.58%	forst/internal/ast/expression.go
2	71.58	1.7%	forst/internal/parser/type.go

Coverage Regressions

Lines	Coverage	∆	File
280	54.12	-6.01%	forst/internal/hasher/hasher.go
133	64.85	1.47%	forst/internal/typechecker/infer_expression.go
99	69.03	0.25%	forst/cmd/forst/lsp/server.go
93	70.38	0.7%	forst/internal/typechecker/go_builtins.go
73	76.02	-0.09%	forst/internal/transformer/go/transformer.go
57	73.41	0.11%	forst/internal/transformer/go/expression.go
52	74.68	0.43%	forst/internal/transformer/go/expression_shape_literal.go
47	72.03	-1.42%	forst/internal/typechecker/collect.go
46	68.42	2.27%	forst/internal/transformer/go/type.go
44	70.94	0.25%	forst/internal/typechecker/go_builtins_dispatch.go
44	61.92	1.19%	forst/internal/typechecker/infer_assignment.go
40	71.72	2.73%	forst/internal/transformer/go/statement.go
35	78.28	0.4%	forst/internal/transformer/go/function.go
34	69.13	-0.94%	forst/internal/typechecker/types.go
30	89.84	0.44%	forst/internal/parser/shape.go
30	33.33	11.81%	forst/internal/typechecker/gointerop/mapping.go
26	73.3	2.78%	forst/internal/typechecker/infer_function.go
24	37.21	-3.58%	forst/internal/ast/expression.go
24	71.58	1.7%	forst/internal/parser/type.go
22	69.33	2.19%	forst/internal/typechecker/unify_operators.go
21	91.26	-7.33%	forst/internal/ast/type.go
20	75.93	-0.08%	forst/cmd/forst/lsp/error_position.go
20	83.87	0.4%	forst/internal/typechecker/typechecker.go
19	84.09	-1.35%	forst/internal/typechecker/infer.go
19	78.48	-0.56%	forst/internal/typechecker/lookup_field_path.go
18	49.53	49.53%	forst/internal/typechecker/gointerop/fields.go
18	33.33	-28.57%	forst/internal/typechecker/shape_field_type.go
16	90.28	0.52%	forst/internal/parser/function.go
13	74.51	-25.49%	forst/internal/ast/tokens.go
10	94.48	-4.37%	forst/internal/astwalk/walk.go
8	89.61	-10.39%	forst/internal/printer/ops.go
8	76.27	1.73%	forst/internal/typechecker/compat_memo.go
8	87.79	-1.01%	forst/internal/typechecker/utils.go
7	36.89	-2.69%	forst/internal/typechecker/scope_rebind.go
6	91.67	-1.14%	forst/internal/parser/expression.go
6	72.96	-0.07%	forst/internal/parser/statement.go
5	85.37	0.18%	forst/internal/typechecker/inferred_storage.go
4	80.3	-1.66%	forst/internal/typechecker/builtin_type_helpers.go
2	92.31	-7.69%	forst/internal/ast/param.go
2	92.86	-7.14%	forst/internal/lexer/classify.go
2	98.56	-1.44%	forst/internal/lexer/process.go
2	83.07	0.46%	forst/internal/typechecker/register.go
1	49.83	0.09%	forst/internal/transformer/go/shape.go

Subprojects

ID	Flag name	Job ID	Ran	Files	Coverage
1	/jobs/185180960	30222813533.1	26 Jul 2026 10:42PM UTC	433	75.33	GitHub Action Run

forst-lang / forst / 30222813533
79%

README BADGES
x

Markdown

Textile

RDoc

HTML

Rst

Uncovered Changes

Coverage Regressions

Subprojects

Source Files on build 30222813533

forst-lang / forst / 30222813533 79%

README BADGES x

Markdown

Textile

RDoc

HTML

Rst

Uncovered Changes

Coverage Regressions

Subprojects

Source Files on build 30222813533

forst-lang / forst / 30222813533
79%

README BADGES
x