brolang

Prototype error-tolerant Brolang compiler written in Odin.

odin build . -out:brolang
./brolang examples/programs/prototype -o /tmp/prototype
/tmp/prototype

Compilation phases are isolated under compiler/:

package loader -> per-file lexer/parser/AST -> checker/HIR -> lower/IR -> opt -> LLVM -> zig cc

Source diagnostics do not block executable generation. When recovery is possible, invalid code lowers to runtime diagnostic traps and the compiler returns status 1. Infrastructure or backend failures return status 2. Top-level function bodies are semantically checked lazily when a concrete specialization is demanded.

Every immediate .bro file in the input directory belongs to the root package. Imports are relative directory paths and are local to the file that declares them:

import "../math"
other_math :: import "../math"

value :: math.sum(other_math.value, 1)

Current prototype features:

Newline-terminated, multiline statements; } may terminate a block's final statement
# comments
Immutable :: bindings, mutable function-local = bindings, and _ sinks
i8, i16, i32, i64, and loose integer-constrained int
Contextual integer constants and compile-time folding of literal addition trees
Directory packages with merged declarations and file-local relative imports
Qualified imported globals and functions with package-aware symbol mangling
Demand-monomorphized Brolang and C-ABI functions
Checked signed addition
Static, eager runtime, and deferred problematic globals
Runtime diagnostics followed by llvm.trap

Compiler exit statuses:

0: executable produced without source diagnostics
1: executable produced with source diagnostics and embedded traps
2: executable could not be produced