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;; Contains the self-hosting Nujel compiler
[def compile]
[let* [def environment [current-closure]]
[def verbose #f]
[defun compile/do/args [args]
[if [last? args]
[cons [compile* [car args]] #nil]
[if [pair? [car args]]
[let* [def ocar [compile* [car args]]]
[if [pair? ocar]
[cons ocar [compile/do/args [cdr args]]]
[compile/do/args [cdr args]]]
]
[compile/do/args [cdr args]]]]
]
[defun compile/do [source]
[let* [def args [compile/do/args source]]
[if [last? args]
[car args]
[cons 'do args]]
]
]
[defun compile/def [source]
[list 'def [cadr source] [compile* [caddr source]]]
]
[defun compile/set! [source]
[list 'set! [cadr source] [compile* [caddr source]]]
]
[defun compile/λ [source]
[if [string? [caddr source]]
[list 'λ* [cadr source] [caddr source] [compile/do [cddr source]]]
[list 'λ* [cadr source] "" [compile/do [cddr source]]]]
]
[defun compile/λ* [source]
source
]
[defun compile/μ [source]
[if [string? [caddr source]]
[list 'μ* [cadr source] [caddr source] [compile/do [cddr source]]]
[list 'μ* [cadr source] "" [compile/do [cddr source]]]]
]
[defun compile/μ* [source]
source
]
[defun compile/ω [source]
[list 'ω [compile/do [cdr source]]]
]
[defun compile/try [source]
[list 'try [compile* [cadr source]] [compile/do [cddr source]]]
]
[defun compile/if [source]
[list 'if [compile* [cadr source]] [compile* [caddr source]] [compile* [cadddr source]]]
]
[defun compile/let* [source]
[list 'let* [compile/do [cdr source]]]
]
[defun compile/cond/clause [source]
[cons [compile* [car source]]
[cons [compile/do [cdr source]]]]
]
[defun compile/cond/clauses [source]
[when source
[cons [compile/cond/clause [car source]]
[compile/cond/clauses [cdr source]]]
]
]
[defun compile/cond [source]
[cons 'cond [compile/cond/clauses [cdr source]]]
]
[defun compile/and [source]
[compile/procedure/arg source]
]
[defun compile/or [source]
[compile/procedure/arg source]
]
[defun compile/while [source]
[list 'while [compile* [cadr source]] [compile/do [cddr source]]]
]
[defun compile/macro [macro source]
[compile* [macro-apply macro [cdr source]]]
]
[defun compile/procedure/arg [source]
[when [pair? source]
[cons [compile* [car source]]
[compile/procedure/arg [cdr source]]]
]
]
[defun compile/procedure [proc source]
[compile/procedure/arg source]
]
[defun compile* [source]
"Compile the forms in source"
[let* [def op [if [apply environment `[[resolves? ~[list 'quote [car source]]]]]
[apply environment `[[resolve ~[list 'quote [car source]]]]]
[car source]]]
[cond [[special-form? op]
[cond [[eq? op do] [compile/do source]]
[[eq? op def] [compile/def source]]
[[eq? op set!] [compile/set! source]]
[[eq? op let] [compile/let source]]
[[eq? op let*] [compile/let* source]]
[[eq? op λ] [compile/λ source]]
[[eq? op λ*] [compile/λ* source]]
[[eq? op μ] [compile/μ source]]
[[eq? op μ*] [compile/μ* source]]
[[eq? op ω] [compile/ω source]]
[[eq? op if] [compile/if source]]
[[eq? op try] [compile/try source]]
[[eq? op cond] [compile/cond source]]
[[eq? op and] [compile/and source]]
[[eq? op or] [compile/or source]]
[[eq? op while] [compile/while source]]
[[eq? op quote] source ]
[#t [throw [list :unknown-special-form "The compiler does not know the current special form, please fix the compiler!" [car source]]]]
]]
[[macro? op] [compile/macro op source]]
[[procedure? op] [compile/procedure op source]]
[[pair? op] [compile/procedure/arg source]]
[[numeric? op] [compile/procedure/arg source]]
[[arr? op] [compile/procedure/arg source]]
[[string? op] [compile/procedure/arg source]]
[[tree? op] [compile/procedure/arg source]]
[#t source]]
]
]
[set! compile [lambda [source new-environment new-verbose]
[when-not new-environment [set! new-environment [current-closure]]]
[when-not new-verbose [set! new-verbose #f]]
[set! environment new-environment]
[set! verbose new-verbose]
[compile* source]
]]
]
[defun compile/forms [source-raw]
"Compile multiple forms, evaluation the results in a temporary environment, so we can make use of macros we just defined"
[def source #nil]
[def source-next source-raw]
[def environment [object]]
[def passes 0]
[def max-passes 100]
[defun try-again [source]
[set! source-next [cons source source-next]]
]
[while source-next
[set! source source-next]
[set! source-next #nil]
[while source
[try [lambda [err] [cond [[eq? [car err] :unresolved-procedure] [try-again [car source]]]
[[eq? [car err] :runtime-macro] [try-again [car source]]]
[#t [throw err]]]]
[def compiled-form [compile [car source] environment #t]]
[apply environment `[[eval* ~compiled-form]]]
]
[set! source [cdr source]]
]
[set! source-next [reverse source-next]]
[if [> [set! passes [+ 1 passes]] max-passes] [throw [list :too-many-passes "The compiler couldn't produce a valid result in a 100 passes, probably something wrong with the code."]]]
]
[compile source-raw environment]
]
[def defmacro [μ [name args ...body]
[list 'def name [compile [cons 'μ [cons args ...body]] [current-closure]]]
]]
[defmacro defun [name args ...body]
[list 'def name [compile [cons 'λ [cons args ...body]] [current-closure]]]
]
[defmacro \ [...body]
"Define a λ with the self-hosting Nujel compiler"
[compile [cons 'λ ...body] [current-closure]]
]
[defmacro eval [expr]
"Compile, Evaluate and then return the result of EXPR"
`[eval* [compile ~expr [current-closure]]]
]
[defmacro +1 [v]
`[+ 1 ~v]
]
[defun optimize/code/rest [code]
[if [pair? code]
[cons [optimize/code [car code]]
[optimize/code/rest [cdr code]]]
code]
]
[defun optimize/code [code]
[if [pair? code]
[if [and [symbol? [car code]] [resolves? [car code]]]
[cons [resolve [car code]]
[optimize/code/rest [cdr code]]]
[cons [optimize/code [car code]]
[optimize/code/rest [cdr code]]]]
code]
]
[defun optimize! [fun]
"Optimize FUN via mutation"
[if [lambda? fun]
[closure! fun @[:code [optimize/code [[closure fun] :code]]]]
#f]
]
[defun optimize-all! []
"Return a list of all lambdas in CTX"
[for-each optimize! [filter lambda? [map resolve [symbol-table]]]]
]
[defun bench-while []
[def i 0]
[while [< i 10,000,000]
[set! i [+ 1 i]]
]
[println i]
i
]
[optimize-all!]
