tools.nes/lib/xixanta/src/context.rs, branch main

Fix the mapping of addresses on labels

2024-12-16T15:10:15Z

There was a big missunderstanding on how things were to be laid out in the end file, and so it was needed to create a proper understanding on what's a Mapping and what's a Segment. These turned out to be fundamental concepts that I failed to grok up until this commit. Hence, this commit re-arranges completely how variables and labels are stored in the Context, and how these objects can then be translated into bundles that can be spit out to the caller. This commit, besides introducing the new Mapping struct, also introduced a more general Object, which abstracts things from the Bundle struct, and allows us to pass certain metadata about the bundle at hand. Signed-off-by: Miquel Sabaté Solà

Re-work the handling of segments in the assembler

2024-12-12T06:55:55Z

There were a lot of assumptions on the assembler that stemmed from a fundamental missunderstanding from my side on how segments are laid out on the final file. This commit is the first step to address this. Signed-off-by: Miquel Sabaté Solà

Add support for anonymous labels

2024-12-12T06:54:58Z

Allow for anonymous labels to be defined and referenced by using the same syntax as cc65. Signed-off-by: Miquel Sabaté Solà

Don't rely on the identifier for control identity

2024-12-12T06:54:51Z

Instead, use a new enum type to identify the control statements that we actually support. This way the assembler is more easily aware on the control that it's dealing with, and can be more sure on certain aspects of the implementation on control support. Signed-off-by: Miquel Sabaté Solà

Re-work the support on labels, variables and jumps

2024-12-12T06:49:33Z

As a way to firstly adapt on the latest changes from the parser since 184c39579227 ("Re-work the parser from scratch"), the assembler had to leave out some features on 16114b2ca358 ("Adapt the assembler to the changes on the parser"). This commit reintroduces support for settings labels, variables and referencing them, while also providing a more robust implementation at that. Signed-off-by: Miquel Sabaté Solà

Allow for .byte/.address statements

2024-12-12T06:48:30Z

Signed-off-by: Miquel Sabaté Solà

Adapt the assembler to the changes on the parser

2024-12-12T06:46:17Z

As of 184c39579227 ("Re-work the parser from scratch") the parser has a proper AST, and the assembler has to traverse it accordingly. Moreover, the assembler has been stripped from a lot of unneeded memory allocations and it's overall more keen on using mere references when possible. Signed-off-by: Miquel Sabaté Solà

Re-work the parser from scratch

2024-12-12T06:41:30Z

The initial implementation was incredibly naive on how complex an assembler can actually be. Because of this, it never bothered to define and produce a proper AST, and hence it was overall extremely fragile on (not so) corner cases. This commit re-writes everything from scratch for the parser, and it should really be the last fundamental change to the parser other than minor additions/features here and there. Signed-off-by: Miquel Sabaté Solà

Add basic support for macros

2024-12-12T06:40:53Z

Macros can now be described with the '.macro' control statement, but no parameters can be given and it's overall pretty brittle. Signed-off-by: Miquel Sabaté Solà

Add support for procedures

2024-12-12T06:33:40Z

Procedures are marked with the '.proc' control statement and work both as a scoping mechanism and as a label that can be referenced. Signed-off-by: Miquel Sabaté Solà