useful-notes/scratches/query-engine-narrow.dot

digraph GeologQueryEngineNarrow {
    fontname = "Helvetica,Arial,sans-serif"
    layout = dot
    rankdir = LR
    ranksep = 0.9;
    nodesep = 0.7;
    splines = true;
    compound = true;
    bgcolor = "white"

    node [
    fontname = "Helvetica,Arial,sans-serif",
    shape = box,
    style = "filled,rounded",
    color = "#555555",
    fillcolor = "white",
    penwidth = 1.5
    ]
    edge [
    fontname = "Helvetica,Arial,sans-serif",
    color = "#333333",
    fontsize = 9,
    fontcolor = "#555555",
    labeldistance = 2.0,
    penwidth = 1.2
    ]

    subgraph cluster_frontend {
    label = "Geolog Front End"
    style = "rounded"
    color = "#666666"
    fontcolor = "#333333"
    bgcolor = "#FAFAFA"
    margin = 20

    subgraph cluster_language {
    label = "Language Pipeline"
    style = "dashed"
    color = "#9C27B0"
    fontcolor = "#7B1FA2"
    margin = 14
    concrete [label = "Concrete Syntax", fillcolor = "#F3E5F5", color = "#9C27B0"]
    parser [label = "Parser", fillcolor = "#F3E5F5", color = "#9C27B0"]
    abstract [label = "Abstract Syntax", fillcolor = "#F3E5F5", color = "#9C27B0"]
    elaborator [label = "Elaborator", fillcolor = "#F3E5F5", color = "#9C27B0"]
    typed [label = "Elaborated Syntax\n(with types)", fillcolor = "#F3E5F5", color = "#9C27B0"]
    lowering [label = "Lowering", fillcolor = "#F3E5F5", color = "#9C27B0"]
    ir [label = "Intermediate Representation\n(backend-neutral contract)", fillcolor = "#F3E5F5", color = "#9C27B0"]
    }

    subgraph cluster_tools {
    label = "Developer Tooling"
    style = "dashed"
    color = "#4CAF50"
    fontcolor = "#388E3C"
    margin = 14
    lsp [label = "LSP\n(parsing + elaboration diagnostics)", fillcolor = "#E8F5E9", color = "#4CAF50"]
    }
    }

    subgraph cluster_execution {
    label = "Execution Layer"
    style = "dashed"
    color = "#4CAF50"
    fontcolor = "#388E3C"
    margin = 18
    query_translation [label = "IR to Backend Translation", fillcolor = "#E8F5E9", color = "#4CAF50"]
    }

    subgraph cluster_backends {
    label = "Backend Implementations"
    style = "rounded"
    color = "#666666"
    fontcolor = "#333333"
    bgcolor = "#FAFAFA"
    margin = 20

    subgraph cluster_inmemory {
    label = "In-Memory Backend"
    style = "dashed"
    color = "#FF9800"
    fontcolor = "#F57C00"
    margin = 14
    inmem_rel [label = "Relation Translation", fillcolor = "#FFF3E0", color = "#FF9800"]
    inmem_laws [label = "Law / Chase Translation", fillcolor = "#FFF3E0", color = "#FF9800"]
    inmem_qe [label = "In-Memory Query Engine", fillcolor = "#FFF3E0", color = "#FF9800"]
    inmem_db [label = "In-Memory DB", fillcolor = "#ECEFF1", color = "#607D8B"]
    }

    subgraph cluster_postgres {
    label = "Postgres Backend"
    style = "dashed"
    color = "#FF9800"
    fontcolor = "#F57C00"
    margin = 14
    pg_schema [label = "IR to Schema", fillcolor = "#FFF3E0", color = "#FF9800"]
    pg_queries [label = "IR to SQL Queries", fillcolor = "#FFF3E0", color = "#FF9800"]
    pg_qe [label = "Postgres Query Engine", fillcolor = "#FFF3E0", color = "#FF9800"]
    pg_db [label = "Postgres DB", fillcolor = "#ECEFF1", color = "#607D8B"]
    }

    subgraph cluster_rust {
    label = "Rust Backend"
    style = "dashed"
    color = "#FF9800"
    fontcolor = "#F57C00"
    margin = 14
    ffi [label = "FFI Haskell to Rust\n(IR marshalling)", fillcolor = "#FFF3E0", color = "#FF9800"]
    rust_rel [label = "Relation Translation", fillcolor = "#FFF3E0", color = "#FF9800"]
    rust_laws [label = "Law / Chase Translation", fillcolor = "#FFF3E0", color = "#FF9800"]
    rust_qe [label = "Rust Query Engine", fillcolor = "#FFF3E0", color = "#FF9800"]
    rust_store [label = "Rust Storage / Query Layer", fillcolor = "#ECEFF1", color = "#607D8B"]
    }
    }

    concrete -> parser [color = "#9C27B0"]
    parser -> abstract [color = "#9C27B0"]
    abstract -> elaborator [color = "#9C27B0"]
    elaborator -> typed [color = "#9C27B0"]
    typed -> lowering [color = "#9C27B0"]
    lowering -> ir [color = "#9C27B0"]

    parser -> lsp [style = "dashed", color = "#4CAF50", label = "syntax info"]
    elaborator -> lsp [style = "dashed", color = "#4CAF50", label = "type info"]

    ir -> query_translation [color = "#4CAF50", label = "compile IR"]

    query_translation -> inmem_rel [color = "#FF9800"]
    query_translation -> inmem_laws [color = "#FF9800"]
    query_translation -> pg_schema [color = "#FF9800"]
    query_translation -> pg_queries [color = "#FF9800"]
    query_translation -> ffi [color = "#FF9800"]

    inmem_rel -> inmem_qe [color = "#FF9800"]
    inmem_laws -> inmem_qe [color = "#FF9800"]
    inmem_qe -> inmem_db [color = "#607D8B"]

    pg_schema -> pg_db [color = "#607D8B"]
    pg_queries -> pg_qe [color = "#FF9800"]
    pg_qe -> pg_db [color = "#607D8B"]

    ffi -> rust_rel [color = "#FF9800"]
    ffi -> rust_laws [color = "#FF9800"]
    rust_rel -> rust_qe [color = "#FF9800"]
    rust_laws -> rust_qe [color = "#FF9800"]
    rust_qe -> rust_store [color = "#607D8B"]
}