motiejus/zig
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5 Commits

Author SHA1 Message Date
Motiejus Jakštys
b3d106ec97 astgen: fix int_type signedness and struct layout 
Match Zig's Signedness enum values (unsigned=1, signed=0) and
reorder int_type struct fields to match Zig's layout:
[src_node, bit_count, signedness, pad].

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
 2026-02-13 20:28:25 +00:00
Motiejus Jakštys
0295bb4651 astgen: port Phases 4-5 (control flow, expressions, scope chain) 
Port scope chain infrastructure, function parameters, local var_decl,
control flow (if/for/while/switch/orelse/catch/defer), labeled blocks,
break/continue, comparison/boolean/unary operators, array access,
field access rvalue, rvalue type coercion optimization, and many
builtins from upstream AstGen.zig. test_all.zig corpus passes;
4 remaining corpus files still have mismatches (WIP).

Also fix cppcheck/lint issues: safe realloc pattern, null checks,
const correctness, enable inline suppressions, comment out test
debug output for clean `zig build`.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
 2026-02-12 11:40:51 +00:00
Motiejus Jakštys
5527ad61e6 astgen: port Phases 1-3 from upstream AstGen.zig 
Replace fixed-size GenZir instruction array with shared dynamic scratch
array matching the upstream design. Add expression types: grouped_expression,
unreachable_literal, enum_literal, multiline_string_literal, return, call,
struct_init, try. Add @cImport/@cInclude support. Fix fn_decl src_node
to use the fn_decl node (not proto_node). Fix GenZir unstack ordering
so fn_block is unstacked before adding instructions to decl_block.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
 2026-02-12 00:42:01 +02:00
Motiejus Jakštys
202733edbc astgen: implement ZIR generation for basic expressions and declarations 
Mechanical translation of AstGen.zig into C. Implements:
- Container members: comptime, simple_var_decl, test_decl, fn_decl
- Expressions: number_literal, string_literal, identifier (with
  primitive types, integer types, and decl_val/decl_ref resolution),
  field_access (field_val/field_ptr), address_of, builtin_call
  (@import), array_type, array_init (with inferred [_] length),
  array_cat (++), ptr_type
- Statement types: assign with _ = expr discard pattern
- Test infrastructure: testDecl, addFunc, fullBodyExpr,
  blockExprStmts, emitDbgNode/emitDbgStmt, rvalueDiscard
- Support: GenZir sub-block instruction tracking, result location
  propagation (RL_NONE/RL_REF/RL_DISCARD), string dedup, import
  tracking, namespace decl table, lastToken, firstToken

1/5 corpus files pass (test_all.zig). Remaining 4 skip gracefully
via has_compile_errors when encountering unimplemented features.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-02-11 21:32:37 +00:00
Motiejus Jakštys
5fb7a1ab9c Add astgen scaffolding with ZIR data structures and first passing test 
Introduce zir.h/zir.c with ZIR instruction types (269 tags, 56 extended
opcodes, 8-byte Data union) ported from lib/std/zig/Zir.zig, and
astgen.h/astgen.c implementing the empty-container fast path that produces
correct ZIR for empty source files.

The test infrastructure in astgen_test.zig compares C astGen() output
field-by-field against Zig's std.zig.AstGen.generate() using tag-based
dispatch, avoiding raw byte comparison since Zig's Data union has no
guaranteed in-memory layout.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
 2026-02-11 18:37:07 +00:00