Ryan Malloy
3bf4f6bed2
Ports the read path of FreeRouting's io/specctra/parser package to a Java-free Python implementation: - tokenizer: S-expression lexer mirroring SpecctraFileDescription.flex (comments, quoted strings, the string_quote IGNORE_QUOTE directive, case-insensitive keywords, and hash-prefixed names) - sexp: nested S-expression tree builder - shapes: rect/circle/polygon/path plus area-with-holes scopes - model: typed dataclasses for layers, padstacks, images, placements, nets, net classes, rules, keepouts - reader: recursive-descent scope readers producing a DsnBoard, one _read_* function per FreeRouting read_scope method 46 pytest cases cover the tokenizer, tree, shapes, and end-to-end parsing against hand-crafted fixtures modeled on FreeRouting's own test DSN files. Parses 90 of 91 upstream fixtures (the one failure is a binary OLE file, not text DSN).
85 lines
1.6 KiB
Plaintext
85 lines
1.6 KiB
Plaintext
(pcb "smd-demo.dsn"
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(parser
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(string_quote ")
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(space_in_quoted_tokens on)
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(host_cad "freeroute-test")
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(host_version "1.0")
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)
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(resolution um 10)
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(unit um)
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(structure
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(layer Top
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(type signal)
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(property
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(index 0)
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)
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)
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(layer Bottom
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(type signal)
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(property
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(index 1)
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)
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)
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(boundary
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(path pcb 0 0 0 150000 0 150000 -90000 0 -90000 0 0)
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)
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(via "Via[0-1]_600:300_um")
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(rule
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(width 200)
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(clearance 200)
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(clearance 50 (type smd_smd))
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)
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(keepout "no_route_zone"
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(rect Top 10000 -10000 20000 -20000)
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)
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)
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(library
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(padstack Rect[T]Pad_800x200_um
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(shape (rect Top -400 -100 400 100))
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(attach off)
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)
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(padstack "Via[0-1]_600:300_um"
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(shape (circle Top 600))
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(shape (circle Bottom 600))
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(attach off)
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)
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(image "MiniQFN-6"
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(pin Rect[T]Pad_800x200_um 1 -3000 400)
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(pin Rect[T]Pad_800x200_um 2 -3000 0)
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(pin Rect[T]Pad_800x200_um 3 -3000 -400)
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)
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(image "0603"
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(pin Rect[T]Pad_800x200_um 1 -850 0)
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(pin Rect[T]Pad_800x200_um 2 850 0)
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)
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)
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(placement
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(component "MiniQFN-6"
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(place U1 75000 -45000 front 90.000000)
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)
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(component "0603"
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(place R1 20000 -35000 front 0.000000)
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(place R2 130000 -35000 back 180.000000)
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)
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)
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(network
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(net NET_A
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(pins U1-1 R2-2)
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)
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(net NET_B
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(pins U1-2 R1-1)
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)
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(class default
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(circuit
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(use_via "Via[0-1]_600:300_um")
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)
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(rule
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(width 200)
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(clearance 200)
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)
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)
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)
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(wiring
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)
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)
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