Compiler Core Features

[spignorel]

Tasks

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1. Abstract Syntax Tree (Add AST #2)
2. Parser (Add lexer #4, Add parser foundation #5, Parse statements and atomic expressions #15, Parse open items and keyword expressions #16, Parse functor expressions #17, Pratt parser for expression operators #18, Parse special operators, tuples, and arrays #19, Parse range expressions #20, Parse internal for callable declarations #21, Fix operator precedence for functors and calls #24, Parse newtype and attributes #28, Parse compound assignment operators #29)
3. Symbol resolution (Add symbol resolution #27, Improve global name resolution #60)
4. Source dependency support (Support span offsets for multiple files and entry expression #32, Support package dependencies #46, Compile with standard library as a dependency #53)
5. implicitly open some standard library (Implicitly open some standard library namespaces #64)

[swernli]

@SamarSha Would you be comfortable calling this done as of today's merged PRs, or are there more tasks we need to add here?

[bamarsha]

We need to implicitly open some standard library namespaces (and decide which namespaces to open).