| 1 | ;; |
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| 2 | ;; NeuroML substrate semantics. |
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| 3 | ;; |
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| 4 | ;; Copyright 2008 Ivan Raikov and the Okinawa Institute of Science and Technology |
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| 5 | ;; |
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| 6 | ;; This program is free software: you can redistribute it and/or |
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| 7 | ;; modify it under the terms of the GNU General Public License as |
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| 8 | ;; published by the Free Software Foundation, either version 3 of the |
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| 9 | ;; License, or (at your option) any later version. |
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| 10 | ;; |
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| 11 | ;; This program is distributed in the hope that it will be useful, but |
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| 12 | ;; WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 14 | ;; General Public License for more details. |
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| 15 | ;; |
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| 16 | ;; A full copy of the GPL license can be found at |
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| 17 | ;; <http://www.gnu.org/licenses/>. |
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| 18 | ;; |
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| 19 | |
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| 20 | (require-extension srfi-1) |
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| 21 | (require-extension srfi-4) |
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| 22 | (require-extension srfi-13) |
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| 23 | (require-extension srfi-14) |
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| 24 | (require-extension datatype) |
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| 25 | (require-extension vector-lib) |
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| 26 | (require-extension environments) |
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| 27 | (require-extension digraph) |
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| 28 | (require-extension graph-bfs) |
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| 29 | (require-extension graph-cycles) |
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| 30 | (require-extension mathh) |
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| 31 | (require-extension lolevel) |
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| 32 | |
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| 33 | (include "mathh-constants") |
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| 34 | |
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| 35 | (define-extension nemo-core) |
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| 36 | |
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| 37 | (declare (export make-nemo-core nemo:error nemo:warning |
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| 38 | nemo:env-copy nemo-intern nemo:quantity? |
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| 39 | eval-nemo-system-decls |
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| 40 | TSCOMP ASGN CONST PRIM)) |
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| 41 | |
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| 42 | ;-------------------- |
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| 43 | ; Message routines |
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| 44 | ; |
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| 45 | ; |
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| 46 | |
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| 47 | (define (nemo:warning x . rest) |
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| 48 | (let loop ((port (open-output-string)) (objs (cons x rest))) |
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| 49 | (if (null? objs) |
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| 50 | (begin |
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| 51 | (newline port) |
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| 52 | (print-error-message (get-output-string port) |
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| 53 | (current-error-port) "nemo warning")) |
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| 54 | (begin (display (car objs) port) |
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| 55 | (display " " port) |
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| 56 | (loop port (cdr objs)))))) |
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| 57 | |
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| 58 | (define (nemo:error x . rest) |
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| 59 | (let ((port (open-output-string))) |
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| 60 | (if (port? x) |
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| 61 | (begin |
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| 62 | (display "[" port) |
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| 63 | (display (port-name x) port) |
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| 64 | (display "] " port))) |
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| 65 | (let loop ((objs (if (port? x) rest (cons x rest)))) |
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| 66 | (if (null? objs) |
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| 67 | (begin |
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| 68 | (newline port) |
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| 69 | (error 'nemo (get-output-string port))) |
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| 70 | (let ((obj (car objs))) |
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| 71 | (if (procedure? obj) |
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| 72 | (with-output-to-port port obj) |
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| 73 | (begin |
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| 74 | (display obj port) |
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| 75 | (display " " port))) |
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| 76 | (loop (cdr objs))))))) |
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| 77 | |
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| 78 | (define (rhs? x) (or (symbol? x) (number? x) (and (list? x) (every rhs? x)))) |
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| 79 | |
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| 80 | (define (transition? x) |
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| 81 | (match x (('-> a b x) (and (symbol? a) (symbol? b) (rhs? x))) |
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| 82 | (else #f))) |
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| 83 | |
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| 84 | (define-datatype nemo:quantity nemo:quantity? |
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| 85 | (SYSNAME (name symbol?)) |
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| 86 | (ASGN (name symbol?) (value number?) (rhs rhs?) ) |
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| 87 | (CONST (name symbol?) (value number?)) |
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| 88 | (TSCOMP (name symbol?) (initial rhs?) |
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| 89 | (open (lambda (x) (or (symbol? x) (and (list? x) (every symbol? x) )))) |
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| 90 | (transitions (lambda (x) (and (list? x) (every transition? x)))) |
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| 91 | (power integer?)) |
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| 92 | (PRIM (name symbol?) (value identity)) |
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| 93 | (EXTERNAL (local-name symbol?) (name symbol?) (namespace (lambda (x) (or (not x) (symbol? x))))) |
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| 94 | (DISPATCH (value procedure?)) |
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| 95 | (EXPORTS (lst (lambda (x) (and (list? x) (every symbol? x))))) |
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| 96 | (COMPONENT (name symbol?) (type symbol?) (lst (lambda (x) (and (list? x) (every symbol? x))))) |
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| 97 | ) |
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| 98 | |
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| 99 | (define (nemo-intern sym) |
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| 100 | (string->symbol (string-append "#" (symbol->string sym)))) |
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| 101 | |
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| 102 | (define (lookup-def k lst . rest) |
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| 103 | (let-optionals rest ((default #f)) |
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| 104 | (let ((v (alist-ref k lst))) |
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| 105 | (if v (first v) default)))) |
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| 106 | |
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| 107 | (define (make-nemo-core . alst) |
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| 108 | |
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| 109 | ;; floating point precision (single or double; default is double) |
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| 110 | (define fptype (lookup-def 'fpprec alst 'double)) |
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| 111 | (define fpvector-type |
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| 112 | (lookup-def 'fpvector-type alst (if (equal? fptype 'single) 'f32vector 'f64vector))) |
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| 113 | (define fpvector? |
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| 114 | (lookup-def 'fpvector? alst (if (equal? fptype 'single) f32vector? f64vector?))) |
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| 115 | (define fpvector |
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| 116 | (lookup-def 'fpvector alst (if (equal? fptype 'single) f32vector f64vector))) |
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| 117 | (define fpvector-ref |
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| 118 | (lookup-def 'fpvector-ref alst (if (equal? fptype 'single) f32vector-ref f64vector-ref))) |
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| 119 | (define fpvector-set! |
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| 120 | (lookup-def 'fpvector-set! alst (if (equal? fptype 'single) f32vector-set! f64vector-set!))) |
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| 121 | |
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| 122 | |
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| 123 | (define builtin-fns |
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| 124 | `(+ - * / pow neg abs atan asin acos sin cos exp ln |
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| 125 | sqrt tan cosh sinh tanh hypot gamma lgamma log10 log2 log1p ldexp cube |
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| 126 | > < <= >= = and or round ceiling floor max min |
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| 127 | fpvector-ref)) |
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| 128 | |
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| 129 | (define (add-primitives! env) |
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| 130 | (for-each (lambda (n b fms rt) |
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| 131 | (let ((fb (extend-procedure b `((rt ,rt) (formals ,fms))))) |
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| 132 | (environment-extend! env n fb))) |
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| 133 | builtin-fns |
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| 134 | (list fp+ fp- fp* fp/ expt fpneg |
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| 135 | abs atan asin acos sin cos exp log sqrt tan |
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| 136 | cosh sinh tanh hypot gamma lgamma log10 log2 log1p ldexp |
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| 137 | (lambda (x) (* x x x)) |
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| 138 | fp> fp< fp<= fp>= fp= |
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| 139 | (lambda (x y) (and x y)) (lambda (x y) (or x y)) |
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| 140 | round ceiling floor fpmax fpmin |
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| 141 | fpvector-ref) |
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| 142 | `((,fptype ,fptype) (,fptype ,fptype) (,fptype ,fptype) (,fptype ,fptype) |
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| 143 | (,fptype ,fptype) (,fptype) |
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| 144 | (,fptype) (,fptype) (,fptype) (,fptype) (,fptype) (,fptype) (,fptype) |
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| 145 | (,fptype) (,fptype) (,fptype) |
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| 146 | (,fptype) (,fptype) (,fptype) (,fptype) (,fptype) (,fptype) (,fptype) |
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| 147 | (,fptype) (,fptype) (,fptype) |
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| 148 | (,fptype) |
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| 149 | (bool bool) (bool bool) (bool bool) (bool bool) (bool bool) (bool bool) (bool bool) |
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| 150 | (,fptype) (,fptype) (,fptype) (,fptype ,fptype) (,fptype ,fptype) |
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| 151 | (,fpvector-type integer) ) |
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| 152 | `(,fptype ,fptype ,fptype ,fptype |
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| 153 | ,fptype ,fptype |
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| 154 | ,fptype ,fptype ,fptype ,fptype ,fptype ,fptype ,fptype |
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| 155 | ,fptype ,fptype ,fptype |
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| 156 | ,fptype ,fptype ,fptype ,fptype ,fptype ,fptype ,fptype |
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| 157 | ,fptype ,fptype ,fptype |
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| 158 | ,fptype |
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| 159 | bool bool bool bool bool bool bool |
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| 160 | ,fptype ,fptype ,fptype ,fptype ,fptype |
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| 161 | ,fptype ) |
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| 162 | )) |
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| 163 | |
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| 164 | (define (add-constants! env) |
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| 165 | (for-each (lambda (n b) (environment-extend! env n b)) |
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| 166 | `(E 1/E E^2 E^PI/4 LOG2E LOG10E LN2 LN3 LNPI LN10 1/LN2 1/LN10 PI PI/2 |
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| 167 | PI/4 1/PI 2/PI 2/SQRTPI SQRTPI PI^2 DEGREE SQRT2 1/SQRT2 SQRT3 SQRT5 |
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| 168 | SQRT10 CUBERT2 CUBERT3 4THRT2 GAMMA1/2 GAMMA1/3 GAMMA2/3 PHI LNPHI |
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| 169 | 1/LNPHI EULER E^EULER SIN1 COS1 ZETA3) |
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| 170 | (list E 1/E E^2 E^PI/4 LOG2E LOG10E LN2 LN3 LNPI LN10 1/LN2 1/LN10 PI PI/2 |
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| 171 | PI/4 1/PI 2/PI 2/SQRTPI SQRTPI PI^2 DEGREE SQRT2 1/SQRT2 SQRT3 SQRT5 |
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| 172 | SQRT10 CUBERT2 CUBERT3 4THRT2 GAMMA1/2 GAMMA1/3 GAMMA2/3 PHI LNPHI |
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| 173 | 1/LNPHI EULER E^EULER SIN1 COS1 ZETA3))) |
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| 174 | |
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| 175 | |
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| 176 | (define (enumdeps expr) |
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| 177 | (let loop ((expr expr) (ax (list)) (lbs (list))) |
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| 178 | (match expr |
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| 179 | (('let bs e) (let let-loop ((bs bs) (ax ax) (lbs lbs)) |
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| 180 | (if (null? bs) (loop e ax lbs) |
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| 181 | (let ((x (first (car bs))) |
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| 182 | (ex (second (car bs)))) |
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| 183 | (let* ((lbs1 (cons x lbs)) |
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| 184 | (ax1 (loop ex ax lbs))) |
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| 185 | (let-loop (cdr bs) ax1 lbs1)))))) |
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| 186 | |
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| 187 | ((s . es) (if (symbol? s) (fold (lambda (e ax) (loop e ax lbs)) ax es) |
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| 188 | (fold (lambda (e ax) (loop e ax lbs)) ax (cons s es)))) |
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| 189 | (id (if (and (symbol? id) (not (member id lbs))) (cons id ax) ax))))) |
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| 190 | |
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| 191 | |
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| 192 | (define (binop-fold op lst) |
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| 193 | (if (null? lst) lst |
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| 194 | (match lst |
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| 195 | ((x) x) |
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| 196 | ((x y) `(,op ,x ,y)) |
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| 197 | ((x y . rest) `(,op (,op ,x ,y) ,(binop-fold op rest))) |
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| 198 | ((x . rest) `(,op ,x ,(binop-fold op rest)))))) |
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| 199 | |
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| 200 | |
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| 201 | ;; if argument is constant, return the negative of that constant, |
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| 202 | ;; otherwise return `(neg ,expr) |
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| 203 | (define (negate expr) |
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| 204 | (if (number? expr) (- expr) |
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| 205 | `(neg ,expr))) |
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| 206 | |
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| 207 | ;; 1. make sure all constants in an expression are flonums |
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| 208 | ;; 2. fold expressions like (+ a b c d) into nested binops |
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| 209 | (define (make-normalize-expr arity-check) |
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| 210 | (lambda (expr) |
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| 211 | (let recur ((expr expr)) |
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| 212 | (match expr |
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| 213 | (('let bs e) (let ((normalize-bnd (lambda (x) `(,(first x) ,(recur (second x)))))) |
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| 214 | `(let ,(map normalize-bnd bs) ,(recur e)))) |
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| 215 | (('if c t e) `(if ,(recur c) ,(recur t) ,(recur e))) |
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| 216 | (('+ . es) (binop-fold '+ (map recur es))) |
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| 217 | (('- . es) (let ((es1 (map recur es))) |
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| 218 | (binop-fold '+ (cons (car es1) (map negate (cdr es1)))))) |
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| 219 | (('* . es) (binop-fold '* (map recur es))) |
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| 220 | (('/ . es) (binop-fold '/ (map recur es))) |
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| 221 | (('fix n) n) |
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| 222 | ((s . es) (begin |
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| 223 | (arity-check s es) |
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| 224 | (cons s (map recur es)))) |
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| 225 | (x (if (number? x) (exact->inexact x) x)))))) |
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| 226 | |
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| 227 | (define (make-base-env) |
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| 228 | (let ((env (make-environment #t))) |
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| 229 | (add-primitives! env) |
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| 230 | (add-constants! env) |
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| 231 | env)) |
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| 232 | |
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| 233 | (define (make-const-env nemo-env) |
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| 234 | (let ((env (make-base-env))) |
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| 235 | (environment-for-each nemo-env |
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| 236 | (lambda (sym en) |
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| 237 | (cond ((nemo:quantity? en) |
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| 238 | (cases nemo:quantity en |
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| 239 | (CONST (name value) |
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| 240 | (environment-extend! env name value)) |
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| 241 | (PRIM (name value) |
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| 242 | (environment-extend! env name value)))) |
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| 243 | ((procedure? en) |
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| 244 | (environment-extend! env sym en))))) |
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| 245 | env)) |
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| 246 | |
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| 247 | (define (system name) |
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| 248 | (let ((env (make-base-env)) |
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| 249 | (name (if (symbol? name) name (string->symbol name)))) |
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| 250 | (environment-extend! env (nemo-intern 'dispatch) (DISPATCH nemo-dispatch)) |
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| 251 | (environment-extend! env (nemo-intern 'name) (SYSNAME name)) |
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| 252 | (environment-extend! env (nemo-intern 'exports) (EXPORTS (list))) |
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| 253 | (environment-extend! env (nemo-intern 'toplevel) (COMPONENT 'toplevel 'toplevel (list))) |
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| 254 | env)) |
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| 255 | |
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| 256 | (define (add-external! nemo-env) |
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| 257 | (lambda (sym typ) |
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| 258 | (match typ |
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| 259 | ('output |
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| 260 | (begin |
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| 261 | (if (not (environment-has-binding? nemo-env sym)) |
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| 262 | (nemo:error 'add-external! ": exported quantity " sym " is not defined")) |
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| 263 | (let* ((exports-sym (nemo-intern 'exports)) |
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| 264 | (exports (environment-ref nemo-env exports-sym))) |
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| 265 | (cases nemo:quantity exports |
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| 266 | (EXPORTS (lst) (environment-set! nemo-env exports-sym (EXPORTS (cons sym lst)))) |
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| 267 | (else (nemo:error 'add-external! ": invalid exports entry " exports)))))) |
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| 268 | |
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| 269 | (('input sym lsym ns) |
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| 270 | (let ((lsym (or lsym sym))) |
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| 271 | |
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| 272 | (if (environment-has-binding? nemo-env lsym) |
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| 273 | (nemo:error 'add-import! ": import symbol " lsym " is already defined")) |
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| 274 | |
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| 275 | ((env-extend! nemo-env) lsym '(external) 'none `(name ,sym) `(namespace ,ns)))) |
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| 276 | |
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| 277 | ))) |
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| 278 | |
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| 279 | |
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| 280 | (define (make-arity-check nemo-env) |
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| 281 | (lambda (s args) |
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| 282 | (let ((op (environment-ref nemo-env s))) |
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| 283 | (if (extended-procedure? op) |
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| 284 | (let* ((fd (procedure-data op)) |
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| 285 | (fms (lookup-def 'formals fd))) |
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| 286 | (if (not (= (length fms) (length args))) |
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| 287 | (nemo:error 'eval-expr "procedure " s |
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| 288 | " called with incorrect number of arguments: " |
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| 289 | args))))))) |
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| 290 | |
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| 291 | (define (env-extend! nemo-env) |
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| 292 | (lambda (name type initial . alst) |
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| 293 | (let* ((sym (if (symbol? name) name (string->symbol name))) |
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| 294 | (arity-check (make-arity-check nemo-env)) |
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| 295 | (normalize-expr (make-normalize-expr arity-check))) |
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| 296 | (if (environment-has-binding? nemo-env sym) |
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| 297 | (nemo:error 'env-extend! ": quantity " sym " already defined") |
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| 298 | (match type |
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| 299 | (('external) (let ((ns (lookup-def 'namespace alst)) |
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| 300 | (external-name (lookup-def 'name alst))) |
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| 301 | (environment-extend! nemo-env sym (EXTERNAL name external-name ns )))) |
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| 302 | |
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| 303 | (('prim) (let* ((rhs (lookup-def 'rhs alst)) |
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| 304 | (val (if (and rhs (procedure? initial) ) |
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| 305 | (extend-procedure initial rhs) |
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| 306 | initial))) |
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| 307 | (environment-extend! nemo-env sym (PRIM name val )))) |
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| 308 | |
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| 309 | (('const) (begin |
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| 310 | (if (not (number? initial)) |
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| 311 | (nemo:error 'env-extend! ": constant definitions require numeric value")) |
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| 312 | (environment-extend! nemo-env sym (CONST name initial)))) |
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| 313 | |
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| 314 | (('tscomp) (begin |
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| 315 | (let ((power (or (lookup-def 'power alst) 1)) |
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| 316 | (transitions (map (lambda (t) |
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| 317 | `(-> ,(second t) ,(third t) ,(normalize-expr (fourth t )))) |
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| 318 | (or (alist-ref 'transitions alst) (list)))) |
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| 319 | (open (lookup-def 'open alst))) |
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| 320 | (if (null? transitions) |
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| 321 | (nemo:error 'env-extend! |
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| 322 | ": transition state complex definitions require a transition scheme")) |
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| 323 | (if (not open) |
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| 324 | (nemo:error 'env-extend! ": state complex definitions require open state")) |
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| 325 | (if (not (integer? power)) |
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| 326 | (nemo:error 'env-extend! |
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| 327 | ": definition for state " sym |
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| 328 | " requires an integer power (" power " was given)")) |
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| 329 | (let ((en (TSCOMP name initial open transitions power))) |
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| 330 | (environment-extend! nemo-env sym en))))) |
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| 331 | |
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| 332 | (('asgn) (let ((rhs (lookup-def 'rhs alst))) |
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| 333 | (if (not (eq? initial 'none)) |
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| 334 | (nemo:error 'env-extend! |
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| 335 | ": state function definitions must have initial value of '(none)")) |
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| 336 | (if (not rhs) |
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| 337 | (nemo:error 'env-extend! ": state function definitions require an equation")) |
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| 338 | (environment-extend! nemo-env sym (ASGN name 0.0 (normalize-expr rhs))))) |
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| 339 | |
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| 340 | (else (begin |
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| 341 | (environment-extend! nemo-env sym `(,type (name ,sym) . ,initial)))) |
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| 342 | ))))) |
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| 343 | |
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| 344 | (define (infer nemo-env ftenv body) |
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| 345 | (let recur ((expr body) (lb (list))) |
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| 346 | (match expr |
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| 347 | (('if c t e) |
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| 348 | (let ((ct (recur c lb)) |
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| 349 | (tt (recur t lb)) |
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| 350 | (et (recur e lb))) |
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| 351 | (and ct tt et |
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| 352 | (begin |
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| 353 | (if (not (equal? ct 'bool)) |
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| 354 | (nemo:error 'infer "if condition type must be boolean")) |
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| 355 | (if (equal? tt et) tt |
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| 356 | (nemo:error 'infer "type mismatch in if statement: then = " tt |
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| 357 | " else = " et)))))) |
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| 358 | (('let bs e) |
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| 359 | (let* ((rlb (lambda (x) (recur x lb))) |
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| 360 | (tbs (map rlb (map second bs))) |
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| 361 | (lb1 (append (zip (map first bs) tbs) lb))) |
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| 362 | (recur e lb1))) |
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| 363 | |
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| 364 | ((s . es) |
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| 365 | (let* ((f (environment-ref nemo-env s)) |
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| 366 | (lst (procedure-data f))) |
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| 367 | (and lst |
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| 368 | (let ((rt (lookup-def 'rt lst)) |
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| 369 | (fms (lookup-def 'formals lst))) |
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| 370 | (and rt fms |
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| 371 | (begin |
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| 372 | (for-each (lambda (x ft) |
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| 373 | (if (and (symbol? x) (not (environment-includes? ftenv x))) |
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| 374 | (environment-extend! ftenv x ft))) |
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| 375 | es fms) |
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| 376 | (let* ((rlb (lambda (x) (recur x lb))) |
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| 377 | (ets (map rlb es))) |
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| 378 | (and (every identity ets) |
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| 379 | (every (lambda (xt ft) (equal? xt ft)) ets fms) |
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| 380 | rt)))))))) |
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| 381 | |
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| 382 | (id (cond ((symbol? id) (or (lookup-def id lb) (environment-ref ftenv id))) |
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| 383 | ((number? id) fptype) |
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| 384 | ((boolean? id) 'bool) |
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| 385 | ((fpvector? id) fpvector-type) |
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| 386 | (else #f)))))) |
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| 387 | |
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| 388 | |
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| 389 | (define (defun! nemo-env) |
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| 390 | (define arity-check (make-arity-check nemo-env)) |
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| 391 | (define normalize-expr (make-normalize-expr arity-check)) |
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| 392 | |
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| 393 | (lambda (name formals body) |
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| 394 | (let ((base-env (make-base-env)) |
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| 395 | (sym (if (symbol? name) name (string->symbol name)))) |
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| 396 | (letrec ((enumconsts |
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| 397 | (lambda (lb) |
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| 398 | (lambda (expr ax) |
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| 399 | (match expr |
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| 400 | (('let bs e) (let ((ec (enumconsts (append (map first bs) lb)))) |
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| 401 | (ec e (fold ec ax (map second bs))))) |
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| 402 | (('if . es) (fold (enumconsts lb) ax es)) |
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| 403 | ((s . es) (if (symbol? s) (cons s (fold (enumconsts lb) ax es)) ax)) |
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| 404 | (s (cond |
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| 405 | ((and (symbol? s) (not (member s lb)) (environment-includes? base-env s)) |
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| 406 | (cons s ax) ) |
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| 407 | ((and (symbol? s) (not (member s lb))) |
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| 408 | (nemo:error 'defun ": quantity " s " not defined")) |
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| 409 | (else ax)))))))) |
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| 410 | (if (environment-has-binding? nemo-env sym) |
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| 411 | (nemo:error 'defun! ": quantity " sym " already defined") |
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| 412 | (let* ((body (normalize-expr body)) |
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| 413 | (consts (delete-duplicates ((enumconsts formals) body (list)))) |
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| 414 | (fc `(lambda (base-env) |
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| 415 | (let ,(map (lambda (v) `(,v (environment-ref base-env ',v))) consts) |
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| 416 | (lambda ,formals ,body)))) |
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| 417 | (f ((eval fc) base-env))) |
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| 418 | |
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| 419 | (let* ((ftenv (make-environment)) |
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| 420 | (rt (infer nemo-env ftenv body)) |
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| 421 | (ftypes (filter-map (lambda (x) (and (environment-includes? ftenv x) |
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| 422 | (environment-ref ftenv x))) |
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| 423 | formals)) |
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| 424 | (ef (extend-procedure f `((rt ,rt) (formals ,ftypes) (vars ,formals) |
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| 425 | (body ,body) (consts ,consts))))) |
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| 426 | (environment-extend! nemo-env sym ef)))))))) |
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| 427 | |
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| 428 | (define (symbol-list? lst) |
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| 429 | (and (list? lst) (every symbol? lst))) |
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| 430 | |
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| 431 | (define (extended nemo-env) |
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| 432 | (filter-map (lambda (sym) |
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| 433 | (let ((x (environment-ref nemo-env sym))) |
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| 434 | (and (not (nemo:quantity? x)) (not (procedure? x)) |
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| 435 | (match x |
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| 436 | (((? symbol-list?) ('name name) . rest) `(,sym ,x)) |
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| 437 | (else #f))))) |
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| 438 | (environment-symbols nemo-env))) |
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| 439 | |
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| 440 | |
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| 441 | (define (extended-with-tag nemo-env tag) |
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| 442 | (filter-map (lambda (sym) |
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| 443 | (let ((x (environment-ref nemo-env sym))) |
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| 444 | (and (not (nemo:quantity? x)) (not (procedure? x)) |
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| 445 | (match x |
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| 446 | (((? (lambda (x) (equal? x tag))) ('name name) . rest) |
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| 447 | `(,sym ,x)) |
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| 448 | (else #f))))) |
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| 449 | (environment-symbols nemo-env))) |
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| 450 | |
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| 451 | |
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| 452 | (define (components nemo-env) |
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| 453 | (filter-map (lambda (sym) |
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| 454 | (let ((x (environment-ref nemo-env sym))) |
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| 455 | (and (nemo:quantity? x) |
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| 456 | (cases nemo:quantity x |
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| 457 | (COMPONENT (name type lst) `(,name ,type ,sym)) |
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| 458 | (else #f))))) |
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| 459 | (environment-symbols nemo-env))) |
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| 460 | |
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| 461 | |
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| 462 | (define (component-symbols nemo-env sym) |
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| 463 | (let ((x (environment-ref nemo-env sym))) |
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| 464 | (and (nemo:quantity? x) |
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| 465 | (cases nemo:quantity x |
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| 466 | (COMPONENT (name type lst) lst) |
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| 467 | (else #f))))) |
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| 468 | |
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| 469 | |
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| 470 | (define (component-exports nemo-env sym) |
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| 471 | (let ((all-exports (cases nemo:quantity (environment-ref nemo-env (nemo-intern 'exports)) |
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| 472 | (EXPORTS (lst) lst)))) |
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| 473 | (let ((x (environment-ref nemo-env sym))) |
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| 474 | (and (nemo:quantity? x) |
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| 475 | (cases nemo:quantity x |
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| 476 | (COMPONENT (name type lst) |
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| 477 | (filter-map (lambda (x) ((lambda (x) (and x (car x))) (member x all-exports))) lst)) |
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| 478 | (else #f)))))) |
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| 479 | |
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| 480 | (define (component-subcomps nemo-env sym) |
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| 481 | (define (component-type x) |
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| 482 | (cases nemo:quantity x |
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| 483 | (COMPONENT (name type lst) type) |
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| 484 | (else #f))) |
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| 485 | (define (component-name x) |
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| 486 | (cases nemo:quantity x |
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| 487 | (COMPONENT (name type lst) name) |
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| 488 | (else #f))) |
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| 489 | (let ((en (environment-ref nemo-env sym))) |
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| 490 | (and (nemo:quantity? en) |
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| 491 | (cases nemo:quantity en |
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| 492 | (COMPONENT (name type lst) |
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| 493 | (filter-map |
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| 494 | (lambda (s) |
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| 495 | (let ((x (environment-ref nemo-env s))) |
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| 496 | (and (iscomp? x) `(,(component-type x) ,(component-name x) ,s)))) lst)) |
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| 497 | (else #f))))) |
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| 498 | |
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| 499 | (define (component-extend! nemo-env) |
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| 500 | (lambda (comp-name sym) |
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| 501 | (let ((x (environment-ref nemo-env comp-name))) |
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| 502 | (if (nemo:quantity? x) |
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| 503 | (cases nemo:quantity x |
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| 504 | (COMPONENT (name type lst) |
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| 505 | (let ((en1 (COMPONENT name type (delete-duplicates (append lst (list sym)))))) |
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| 506 | (environment-set! nemo-env comp-name en1))) |
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| 507 | (else (nemo:error 'component-extend! ": invalid component " comp-name))) |
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| 508 | (nemo:error 'component-extend! ": invalid component " comp-name))))) |
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| 509 | |
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| 510 | |
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| 511 | (define (exports nemo-env) |
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| 512 | (cases nemo:quantity (environment-ref nemo-env (nemo-intern 'exports)) |
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| 513 | (EXPORTS (lst) lst))) |
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| 514 | |
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| 515 | |
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| 516 | (define (imports nemo-env) |
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| 517 | (filter-map (lambda (sym) |
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| 518 | (let ((x (environment-ref nemo-env sym))) |
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| 519 | (and (nemo:quantity? x) |
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| 520 | (cases nemo:quantity x |
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| 521 | (EXTERNAL (local-name name namespace) (list local-name name namespace)) |
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| 522 | (else #f))))) |
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| 523 | (environment-symbols nemo-env))) |
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| 524 | |
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| 525 | |
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| 526 | (define (consts nemo-env) |
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| 527 | (filter-map (lambda (sym) |
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| 528 | (let ((x (environment-ref nemo-env sym))) |
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| 529 | (and (nemo:quantity? x) |
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| 530 | (cases nemo:quantity x |
|---|
| 531 | (CONST (name value) (list name value) ) |
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| 532 | (else #f))))) |
|---|
| 533 | (environment-symbols nemo-env))) |
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| 534 | |
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| 535 | |
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| 536 | |
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| 537 | (define (states nemo-env) |
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| 538 | (fold (lambda (sym ax) |
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| 539 | (let ((x (environment-ref nemo-env sym))) |
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| 540 | (if (nemo:quantity? x) |
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| 541 | (cases nemo:quantity x |
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| 542 | (TSCOMP (name initial open transitions power) |
|---|
| 543 | (let ((ss (delete-duplicates (append (map second transitions) |
|---|
| 544 | (map third transitions))))) |
|---|
| 545 | (append ss ax))) |
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| 546 | (else ax)) |
|---|
| 547 | ax))) |
|---|
| 548 | (list) (environment-symbols nemo-env))) |
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| 549 | |
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| 550 | |
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| 551 | (define (stcomps nemo-env) |
|---|
| 552 | (fold (lambda (sym ax) |
|---|
| 553 | (let ((x (environment-ref nemo-env sym))) |
|---|
| 554 | (if (nemo:quantity? x) |
|---|
| 555 | (cases nemo:quantity x |
|---|
| 556 | (TSCOMP (name initial open transitions power) |
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| 557 | (cons name ax)) |
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| 558 | (else ax)) |
|---|
| 559 | ax))) |
|---|
| 560 | (list) (environment-symbols nemo-env))) |
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| 561 | |
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| 562 | |
|---|
| 563 | (define (asgns nemo-env) |
|---|
| 564 | (filter-map (lambda (sym) |
|---|
| 565 | (let ((x (environment-ref nemo-env sym))) |
|---|
| 566 | (and (nemo:quantity? x) |
|---|
| 567 | (cases nemo:quantity x |
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| 568 | (ASGN (name value rhs) name) |
|---|
| 569 | (else #f))))) |
|---|
| 570 | (environment-symbols nemo-env))) |
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| 571 | |
|---|
| 572 | |
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| 573 | (define (defuns nemo-env) |
|---|
| 574 | (filter-map (lambda (sym) |
|---|
| 575 | (let ((x (environment-ref nemo-env sym))) |
|---|
| 576 | (and (procedure? x) (not (member sym builtin-fns)) (list sym x)))) |
|---|
| 577 | (environment-symbols nemo-env))) |
|---|
| 578 | |
|---|
| 579 | (define (toplevel nemo-env) |
|---|
| 580 | (cases nemo:quantity (environment-ref nemo-env (nemo-intern 'toplevel)) |
|---|
| 581 | (COMPONENT (name type lst) `(,type ,lst)))) |
|---|
| 582 | |
|---|
| 583 | (define (exam nemo-env) |
|---|
| 584 | (lambda (name) |
|---|
| 585 | (let ((sym (if (symbol? name) name (string->symbol name))) |
|---|
| 586 | (out (current-output-port))) |
|---|
| 587 | (if (not (environment-has-binding? nemo-env sym)) |
|---|
| 588 | (nemo:error 'exam ": quantity " sym " is not defined") |
|---|
| 589 | (let ((x (environment-ref nemo-env sym))) |
|---|
| 590 | (cases nemo:quantity x |
|---|
| 591 | (PRIM (name value) |
|---|
| 592 | (begin |
|---|
| 593 | (fprintf out "~a: compiled cnemo primitive\n" name) |
|---|
| 594 | (fprintf out " value: ~a\n" value))) |
|---|
| 595 | |
|---|
| 596 | (TSCOMP (name initial open transitions power) |
|---|
| 597 | (begin |
|---|
| 598 | (fprintf out "~a: transition state complex\n" name) |
|---|
| 599 | (fprintf out " initial value: ~a\n" initial))) |
|---|
| 600 | |
|---|
| 601 | (CONST (name value) |
|---|
| 602 | (begin |
|---|
| 603 | (fprintf out "~a: constant\n" name) |
|---|
| 604 | (fprintf out " value: ~a\n" value))) |
|---|
| 605 | |
|---|
| 606 | (ASGN (name value rhs) |
|---|
| 607 | (begin |
|---|
| 608 | (fprintf out "~a: state function\n" name) |
|---|
| 609 | (fprintf out " value: ~a\n" value))) |
|---|
| 610 | |
|---|
| 611 | (else (nemo:error 'exam name ": unknown type of quantity")))))))) |
|---|
| 612 | |
|---|
| 613 | |
|---|
| 614 | (define (eval-const nemo-env expr) |
|---|
| 615 | (let* ((arity-check (make-arity-check nemo-env)) |
|---|
| 616 | (normalize-expr (make-normalize-expr arity-check))) |
|---|
| 617 | (let ((expr1 (normalize-expr expr))) |
|---|
| 618 | (exact->inexact (eval expr1 (make-const-env nemo-env)))))) |
|---|
| 619 | |
|---|
| 620 | |
|---|
| 621 | (define (iscomp? x) |
|---|
| 622 | (cond ((nemo:quantity? x) |
|---|
| 623 | (cases nemo:quantity x |
|---|
| 624 | (COMPONENT (name type lst) #t) |
|---|
| 625 | (else #f))) |
|---|
| 626 | (else #f))) |
|---|
| 627 | |
|---|
| 628 | (define (isdep? x) |
|---|
| 629 | (cond ((nemo:quantity? x) |
|---|
| 630 | (cases nemo:quantity x |
|---|
| 631 | (ASGN (name value rhs) #t) |
|---|
| 632 | (else #f))) |
|---|
| 633 | ((and (list? x) (every pair? (cdr x))) (alist-ref 'dep? (cdr x))) |
|---|
| 634 | (else #f))) |
|---|
| 635 | |
|---|
| 636 | |
|---|
| 637 | (define (isstate? x) |
|---|
| 638 | (and (nemo:quantity? x) |
|---|
| 639 | (cases nemo:quantity x |
|---|
| 640 | (TSCOMP (name initial open transitions) #t) |
|---|
| 641 | (else #f)))) |
|---|
| 642 | |
|---|
| 643 | |
|---|
| 644 | (define (qrhs x) |
|---|
| 645 | (and (nemo:quantity? x) |
|---|
| 646 | (cases nemo:quantity x |
|---|
| 647 | (TSCOMP (name initial open transitions) |
|---|
| 648 | (begin |
|---|
| 649 | (map cadddr transitions))) |
|---|
| 650 | (ASGN (name value rhs) rhs) |
|---|
| 651 | (else #f)))) |
|---|
| 652 | |
|---|
| 653 | |
|---|
| 654 | (define (sysname nemo-env) |
|---|
| 655 | (cases nemo:quantity (environment-ref nemo-env (nemo-intern 'name)) |
|---|
| 656 | (SYSNAME (name) name))) |
|---|
| 657 | |
|---|
| 658 | |
|---|
| 659 | ;; create equation dependency graph |
|---|
| 660 | (define (make-eqng nemo-env) |
|---|
| 661 | (let* ((sysname (sysname nemo-env)) |
|---|
| 662 | (g (make-digraph sysname (string-append (symbol->string sysname) |
|---|
| 663 | " equation dependency graph"))) |
|---|
| 664 | (add-node! (g 'add-node!)) |
|---|
| 665 | (add-edge! (g 'add-edge!)) |
|---|
| 666 | (nemo-list (filter (lambda (sym) (let ((x (environment-ref nemo-env sym))) |
|---|
| 667 | (or (isstate? x) (isdep? x)))) |
|---|
| 668 | (environment-symbols nemo-env))) |
|---|
| 669 | (nemo-ids (list-tabulate (length nemo-list) identity)) |
|---|
| 670 | (name->id-map (zip nemo-list nemo-ids))) |
|---|
| 671 | (let-values (((state-list asgn-list) |
|---|
| 672 | (partition (lambda (sym) (isstate? (environment-ref nemo-env sym))) |
|---|
| 673 | nemo-list))) |
|---|
| 674 | |
|---|
| 675 | ;; insert equations in the dependency graph |
|---|
| 676 | (for-each (lambda (i n) (add-node! i n)) nemo-ids nemo-list) |
|---|
| 677 | ;; create dependency edges in the graph |
|---|
| 678 | (for-each (lambda (e) |
|---|
| 679 | (match e ((ni . nj) (begin |
|---|
| 680 | (let ((i (car (alist-ref ni name->id-map))) |
|---|
| 681 | (j (car (alist-ref nj name->id-map)))) |
|---|
| 682 | (add-edge! (list i j (format "~A=>~A" ni nj)))))) |
|---|
| 683 | (else (nemo:error 'make-eqng ": invalid edge " e)))) |
|---|
| 684 | (fold (lambda (qsym ax) |
|---|
| 685 | (let* ((q (environment-ref nemo-env qsym)) |
|---|
| 686 | (rhs (qrhs q))) |
|---|
| 687 | (if rhs |
|---|
| 688 | (let* ((deps (filter (if (isstate? q) |
|---|
| 689 | (lambda (sym) |
|---|
| 690 | (and (let ((x (environment-ref nemo-env sym))) |
|---|
| 691 | (and (isdep? x) (not (eq? sym qsym)))))) |
|---|
| 692 | (lambda (sym) |
|---|
| 693 | (and (let ((x (environment-ref nemo-env sym))) |
|---|
| 694 | (isdep? x))))) |
|---|
| 695 | (enumdeps rhs))) |
|---|
| 696 | (edges (map (lambda (d) (cons d qsym)) deps))) |
|---|
| 697 | (if edges (append edges ax) ax)) |
|---|
| 698 | ax))) |
|---|
| 699 | (list) nemo-list)) |
|---|
| 700 | (let ((cycles (graph-cycles-fold g (lambda (cycle ax) (cons cycle ax)) (list)))) |
|---|
| 701 | (if (null? cycles) (list state-list asgn-list g) |
|---|
| 702 | (nemo:error 'make-eqng ": equation cycle detected: " (car cycles))))))) |
|---|
| 703 | |
|---|
| 704 | |
|---|
| 705 | ;; given a graph, create a partial ordering based on BFS distance from root |
|---|
| 706 | (define (graph->bfs-dist-poset g) |
|---|
| 707 | (define node-info (g 'node-info)) |
|---|
| 708 | |
|---|
| 709 | (let-values (((dists dmax) (graph-bfs-dist g ((g 'roots))))) |
|---|
| 710 | (let loop ((poset (make-vector (fx+ 1 dmax) (list))) |
|---|
| 711 | (i (fx- (s32vector-length dists) 1))) |
|---|
| 712 | (if (fx>= i 0) |
|---|
| 713 | (let* ((c (s32vector-ref dists i)) |
|---|
| 714 | (info (node-info i))) |
|---|
| 715 | (vector-set! poset c (cons (cons i info) (vector-ref poset c))) |
|---|
| 716 | (loop poset (fx- i 1))) |
|---|
| 717 | (begin |
|---|
| 718 | poset))))) |
|---|
| 719 | |
|---|
| 720 | |
|---|
| 721 | (define (make-eval-poset nemo-env eqposet) |
|---|
| 722 | (vector-map |
|---|
| 723 | (lambda (i lst) |
|---|
| 724 | (filter-map (lambda (id+sym) |
|---|
| 725 | (let* ((sym (cdr id+sym)) |
|---|
| 726 | (x (environment-ref nemo-env sym))) |
|---|
| 727 | (and (nemo:quantity? x) |
|---|
| 728 | (cases nemo:quantity x |
|---|
| 729 | (TSCOMP (name initial open transitions) |
|---|
| 730 | (let ((rs (map cadddr transitions))) |
|---|
| 731 | (list 'ts sym rs))) |
|---|
| 732 | (ASGN (name value rhs) |
|---|
| 733 | (list 'a sym rhs)) |
|---|
| 734 | (else nemo:error 'make-eval-poset |
|---|
| 735 | ": invalid quantity in equation poset: " sym))))) |
|---|
| 736 | lst)) |
|---|
| 737 | eqposet)) |
|---|
| 738 | |
|---|
| 739 | (define (eval-expr env) |
|---|
| 740 | (lambda (expr) |
|---|
| 741 | (let ((val (match expr |
|---|
| 742 | (('if c t f) |
|---|
| 743 | (let ((ee (eval-expr env))) |
|---|
| 744 | (condition-case |
|---|
| 745 | (if (ee c) (ee t) (ee f)) |
|---|
| 746 | [var () |
|---|
| 747 | (nemo:error 'eval-expr " exception in " expr ": \n" |
|---|
| 748 | (lambda () (print-error-message var)))]))) |
|---|
| 749 | |
|---|
| 750 | ((s . es) |
|---|
| 751 | (condition-case |
|---|
| 752 | (let ((op (environment-ref env s)) |
|---|
| 753 | (args (map (eval-expr env) es))) |
|---|
| 754 | (if (extended-procedure? op) |
|---|
| 755 | (let* ((fd (procedure-data op)) |
|---|
| 756 | (vs (lookup-def 'vars fd))) |
|---|
| 757 | (if (not (= (length vs) (length args))) |
|---|
| 758 | (nemo:error 'eval-expr "procedure " s |
|---|
| 759 | " called with incorrect number of arguments")))) |
|---|
| 760 | (apply op args)) |
|---|
| 761 | [var () |
|---|
| 762 | (nemo:error 'eval-expr " exception in " expr ": \n" |
|---|
| 763 | (lambda () (print-error-message var)))])) |
|---|
| 764 | |
|---|
| 765 | (s |
|---|
| 766 | (cond ((symbol? s) (environment-ref env s)) |
|---|
| 767 | ((number? s) s) |
|---|
| 768 | (else (nemo:error 'eval-expr "unknown expression " s))))))) |
|---|
| 769 | val))) |
|---|
| 770 | |
|---|
| 771 | |
|---|
| 772 | (define (depgraph nemo-env) |
|---|
| 773 | (match-let (((state-list asgn-list g) (make-eqng nemo-env))) g)) |
|---|
| 774 | |
|---|
| 775 | (define (depgraph* nemo-env) |
|---|
| 776 | (match-let (((state-list asgn-list g) (make-eqng nemo-env))) |
|---|
| 777 | (list state-list asgn-list g))) |
|---|
| 778 | |
|---|
| 779 | |
|---|
| 780 | ;; Dispatcher |
|---|
| 781 | (define (nemo-dispatch selector) |
|---|
| 782 | (case selector |
|---|
| 783 | ((add-external!) add-external!) |
|---|
| 784 | ((defun!) defun!) |
|---|
| 785 | ((depgraph) depgraph) |
|---|
| 786 | ((depgraph*) depgraph*) |
|---|
| 787 | ((depgraph->bfs-dist-poset) graph->bfs-dist-poset) |
|---|
| 788 | ((eval-const) eval-const) |
|---|
| 789 | ((env-extend!) env-extend!) |
|---|
| 790 | ((exam) exam) |
|---|
| 791 | ((make-const-env) make-const-env) |
|---|
| 792 | ((system) system) |
|---|
| 793 | ((sysname) sysname) |
|---|
| 794 | ((asgns) asgns) |
|---|
| 795 | ((states) states) |
|---|
| 796 | ((stcomps) stcomps) |
|---|
| 797 | ((defuns) defuns) |
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| 798 | ((consts) consts) |
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| 799 | ((exports) exports) |
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| 800 | ((imports) imports) |
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| 801 | ((toplevel) toplevel) |
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| 802 | ((components) components) |
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| 803 | ((component-symbols) component-symbols) |
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| 804 | ((component-exports) component-exports) |
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| 805 | ((component-subcomps) component-subcomps) |
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| 806 | ((component-extend!) component-extend!) |
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| 807 | ((extended) extended) |
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| 808 | ((extended-with-tag) extended-with-tag) |
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| 809 | (else |
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| 810 | (nemo:error 'selector ": unknown message " selector " sent to an nemo-core object")))) |
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| 811 | |
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| 812 | nemo-dispatch) |
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| 813 | |
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| 814 | (define nemo:env-copy environment-copy) |
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| 815 | |
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| 816 | (define qcounter 0) |
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| 817 | |
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| 818 | (define (qname prefix) |
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| 819 | (let ((v qcounter)) |
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| 820 | (set! qcounter (+ 1 qcounter)) |
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| 821 | (string->symbol (string-append (->string prefix) (number->string v))))) |
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| 822 | |
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| 823 | (define (eval-nemo-system-decls nemo-core name sys declarations) |
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| 824 | (define (eval-const x) (and x ((nemo-core 'eval-const) sys x))) |
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| 825 | (let loop ((ds declarations) (qs (list)) (top #t)) |
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| 826 | (if (null? ds) |
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| 827 | (let ((qs (reverse qs))) |
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| 828 | (if top (let* ((top-syms ((nemo-core 'component-symbols ) sys (nemo-intern 'toplevel))) |
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| 829 | (top-syms1 (append qs top-syms))) |
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| 830 | (environment-set! sys (nemo-intern 'toplevel) (COMPONENT 'toplevel 'toplevel top-syms1)))) |
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| 831 | qs) |
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| 832 | (let ((decl (car ds))) |
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| 833 | (let ((qs1 (match decl |
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| 834 | ;; imported quantities |
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| 835 | (('input . lst) |
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| 836 | (cond ((every (lambda (x) (or (symbol? x) (list? x))) lst) |
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| 837 | (fold (lambda (x ax) |
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| 838 | (match x |
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| 839 | ((? symbol?) |
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| 840 | (((nemo-core 'add-external!) sys) x `(input ,x ,x #f)) |
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| 841 | (cons x ax)) |
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| 842 | ((id1 'as x1) |
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| 843 | (((nemo-core 'add-external!) sys) x `(input ,id1 ,x1 #f)) |
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| 844 | (cons x1 ax)) |
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| 845 | ((id1 'from n1) |
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| 846 | (((nemo-core 'add-external!) sys) x `(input ,id1 ,id1 ,n1)) |
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| 847 | (cons id1 ax)) |
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| 848 | ((id1 'as x1 'from n1) |
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| 849 | (((nemo-core 'add-external!) sys) x `(input ,id1 ,x1 ,n1)) |
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| 850 | (cons x1 ax)) |
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| 851 | )) |
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| 852 | qs lst)) |
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| 853 | (else (nemo:error 'eval-nemo-system-decls |
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| 854 | "import statement must be of the form: " |
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| 855 | "input id1 [as x1] ... ")))) |
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| 856 | |
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| 857 | ;; exported quantities |
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| 858 | (('output . lst) |
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| 859 | (cond ((every symbol? lst) |
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| 860 | (for-each (lambda (x) (((nemo-core 'add-external!) sys) x 'output)) lst) |
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| 861 | qs) |
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| 862 | (else (nemo:error 'eval-nemo-system-decls |
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| 863 | "export statement must be of the form: " |
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| 864 | "output id1 ... ")))) |
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| 865 | |
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| 866 | ;; constant during integration |
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| 867 | (('const id '= expr) |
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| 868 | (cond ((and (symbol? id) (or (number? expr) (list? expr))) |
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| 869 | (let ((val (eval-const expr))) |
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| 870 | (((nemo-core 'env-extend!) sys) id '(const) val) |
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| 871 | (cons id qs))) |
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| 872 | (else (nemo:error 'eval-nemo-system-decls |
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| 873 | "constant declarations must be of the form: " |
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| 874 | "const id = expr")))) |
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| 875 | |
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| 876 | ;; state transition complex |
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| 877 | (('state-complex (id . alst) ) |
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| 878 | (cond ((and (symbol? id) (list? alst)) |
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| 879 | (let ((initial (eval-const (lookup-def 'initial alst))) |
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| 880 | (power (eval-const (lookup-def 'power alst)))) |
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| 881 | (apply ((nemo-core 'env-extend!) sys) |
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| 882 | (cons* id '(tscomp) initial `(power ,power) alst))) |
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| 883 | (cons id qs)) |
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| 884 | (else (nemo:error 'eval-nemo-system-decls |
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| 885 | "state complex declarations must be of the form: " |
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| 886 | "state-complex (id ...)")))) |
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| 887 | |
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| 888 | ;; algebraic assignment |
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| 889 | ((id '= expr) |
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| 890 | (cond ((and (symbol? id) (or (symbol? expr) (number? expr) (list? expr))) |
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| 891 | (((nemo-core 'env-extend!) sys) id '(asgn) 'none `(rhs ,expr)) |
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| 892 | (cons id qs)) |
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| 893 | (else (nemo:error 'eval-nemo-system-decls |
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| 894 | "algebraic declarations must be of the form: " |
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| 895 | "id = expr")))) |
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| 896 | |
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| 897 | ;; user-defined function |
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| 898 | (('defun id idlist expr) |
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| 899 | (cond ((and (symbol? id) (list? idlist) (every symbol? idlist) (list? expr)) |
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| 900 | (((nemo-core 'defun!) sys) id idlist expr) |
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| 901 | (cons id qs)) |
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| 902 | (else (nemo:error 'eval-nemo-system-decls |
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| 903 | "function declarations must be of the form: " |
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| 904 | "defun id (arg1 arg2 ...) expr")))) |
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| 905 | |
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| 906 | ;; compiled primitives |
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| 907 | (('prim id value) |
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| 908 | (cond ((symbol? id) (((nemo-core 'env-extend!) sys) id '(prim) value)) |
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| 909 | (else (nemo:error 'eval-nemo-system-decls |
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| 910 | "prim declarations must be of the form: " |
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| 911 | "prim id value")))) |
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| 912 | |
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| 913 | (('component ('type typ) ('name name) . lst) |
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| 914 | (let* ((cqs (loop lst (list) #f)) |
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| 915 | (sym (qname "comp")) |
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| 916 | (comp (COMPONENT name typ cqs))) |
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| 917 | (environment-set! sys sym comp) |
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| 918 | (cons sym qs))) |
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| 919 | |
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| 920 | |
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| 921 | (('component ('type typ) . lst) |
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| 922 | (let* ((sym (qname "comp")) |
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| 923 | (cqs (loop lst (list) #f)) |
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| 924 | (comp (COMPONENT sym typ cqs))) |
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| 925 | (environment-set! sys sym comp) |
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| 926 | (cons sym qs))) |
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| 927 | |
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| 928 | |
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| 929 | (('sysname name) (if (symbol? name) |
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| 930 | (environment-set! sys (nemo-intern 'name) (SYSNAME name)) |
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| 931 | (nemo:error 'eval-nemo-system-decls |
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| 932 | "system name must be a symbol"))) |
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| 933 | |
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| 934 | (('const . _) |
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| 935 | (nemo:error 'eval-nemo-system-decls "constant declarations must be of the form: " |
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| 936 | "const id = expr")) |
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| 937 | |
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| 938 | ((id '= . _) |
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| 939 | (nemo:error 'eval-nemo-system-decls "algebraic equations must be of the form: " |
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| 940 | "id = expr")) |
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| 941 | |
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| 942 | (('state-complex . _) |
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| 943 | (nemo:error 'eval-nemo-system-decls |
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| 944 | "state complex declarations must be of the form: " |
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| 945 | "state-complex (id ...)")) |
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| 946 | |
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| 947 | (('defun . _) |
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| 948 | (nemo:error 'eval-nemo-system-decls "function declarations must be of the form: " |
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| 949 | "defun id (arg1 arg2 ...) expr")) |
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| 950 | |
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| 951 | (('prim . _) |
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| 952 | (nemo:error 'eval-nemo-system-decls "prim declarations must be of the form: " |
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| 953 | "prim id value")) |
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| 954 | |
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| 955 | (('component . _) |
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| 956 | (nemo:error 'eval-nemo-system-decls "invalid component: " decl)) |
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| 957 | |
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| 958 | (('sysname . _) |
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| 959 | (nemo:error 'eval-nemo-system-decls "system name must be of the form (sysname name)")) |
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| 960 | |
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| 961 | ;; anything that doesn't match is possibly |
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| 962 | ;; declarations recognized by the nemo extension |
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| 963 | ;; modules |
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| 964 | ((tag . lst) |
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| 965 | (if (symbol? tag) |
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| 966 | (match-let (((typ name alst) |
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| 967 | (let loop ((lst lst) (ax (list tag))) |
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| 968 | (if (null? lst) |
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| 969 | (list (list (car (reverse ax))) #f (cdr (reverse ax))) |
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| 970 | (begin |
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| 971 | (match lst |
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| 972 | (((? symbol?) . rest) |
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| 973 | (loop (cdr lst) (cons (car lst) ax))) |
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| 974 | (((x . rest)) |
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| 975 | (if (and (symbol? x) (every list? rest)) |
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| 976 | (list (reverse ax) x rest) |
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| 977 | (list (reverse ax) #f lst))) |
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| 978 | (else (list (reverse ax) #f lst)))))))) |
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| 979 | |
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| 980 | (let ((name (or name (qname tag)))) |
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| 981 | (((nemo-core 'env-extend!) sys) name typ alst) |
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| 982 | (cons name qs))) |
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| 983 | (nemo:error 'eval-nemo-system-decls "extended declarations must be of the form: " |
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| 984 | "declaration (name (properties ...)"))) |
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| 985 | ))) |
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| 986 | |
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| 987 | |
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| 988 | (loop (cdr ds) qs1 top))) |
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| 989 | )) |
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| 990 | sys) |
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