Jesse D. McDonald
960d7917c9
Enforce that all structures have types derived from 'structure'.
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Take advantage of this invariant to simplify struct type checks elsewhere.
Group (meta)structure definition with basic types.
2012-07-14 13:47:03 -05:00
Jesse D. McDonald
9e4286b49e
Refactor (define) parser to work in (let), (lambda), (begin), etc.
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Add support for (fix=), (list), (and), (or), (cond), (when), and (unless).
Fix a mapper bug which could assign the same frame var to separate variables.
Update make-struct primitive for new structure type layout.
Change primitives to use #% as prefix instead of just %.
Add primitive operations for comparing byte-strings.
2012-07-14 13:45:54 -05:00
Jesse D. McDonald
6dd02a5d6e
Stop reading at EOF, and signal an error when EOF occurs inside a string.
2012-07-14 13:43:32 -05:00
Jesse D. McDonald
32952e9aa4
Add (empty) write barriers in preparation for more advanced GC.
2012-07-14 13:43:03 -05:00
Jesse D. McDonald
ca8d68c023
Add automatic dependency tracking to the build rules.
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Move optional extension modules (e.g. mod_io.c) into mods/ subdir.
Fix missing #include in reader.c.
2012-07-14 13:42:30 -05:00
Jesse D. McDonald
ec306ef31f
Adjust indirect form (#i"path") to be relative to the current file.
2012-07-14 13:42:16 -05:00
Jesse D. McDonald
6254044280
Add #i"pathname" syntax for reading values from modular input files.
2012-07-14 13:42:14 -05:00
Jesse D. McDonald
e18863c3ad
Simplify number reader; eliminates potentially invalid double-ungetc().
2012-07-14 13:42:00 -05:00
Jesse D. McDonald
912a620c5a
Add some error-handling to cat.rla. Add support for #! lines.
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Also fix an off-by-one error in the column counter and suppress GC stats.
2012-07-14 13:41:52 -05:00
Jesse D. McDonald
b74f0cddda
Adjust number-reader to allow 'negative zero' FP values.
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Also add builtins for NaN and +/- infinity, and bytecodes for classification.
2012-07-14 13:40:52 -05:00
Jesse D. McDonald
aa461c8574
Add basic support for reading floating-point values.
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No guarantees are made as to the precision.
2012-07-14 13:40:50 -05:00
Jesse D. McDonald
c1ac1323bf
Check for errors when opening program file.
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Add a debug assertion in the reader to catch bugs like the last one.
2012-07-14 13:40:29 -05:00
Jesse D. McDonald
8e34feea0b
Fix an order-of-operations bug in finalize_placeholders().
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The bug would have prevented the resolution of multiple levels of links.
2012-07-14 13:40:24 -05:00
Jesse D. McDonald
9f0dc52934
Improve number-reading in preparation for supporting floating-point.
2012-07-14 13:40:21 -05:00
Jesse D. McDonald
902c489b90
Resolve all placeholders before patching. Allows direct links (#0=#=0).
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Definitions and references can be made in any order.
Cyclic placeholders resolve to #<undefined>, as do ones without definitions.
2012-07-14 13:40:17 -05:00
Jesse D. McDonald
48eb22d15b
Update reader to fix corner-cases in the placeholder/back-reference system.
2012-07-14 13:40:16 -05:00
Jesse D. McDonald
0404777049
Fix interaction between comments and whitespace in the reader.
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Add support for fixnums in binary (0b), octal (0), and hexadecimal (0x).
Minor changes to the example input program to improve readability.
2012-07-14 13:40:11 -05:00
Jesse D. McDonald
c01f0838f1
Misc. reader improvements, plus ability to run *.rla directly.
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Fix tree_replace() to handle recursive data structures.
Fix some other minor bugs in the reader and interpreter.
Implement comment-escapes in the string parser, for more readable input.
Allow input program files (*.rla) to be invoked directly, with arguments.
Add a simple string->number converter as a builtin function.
2012-07-14 13:38:48 -05:00
Jesse D. McDonald
439491a80e
Support negative fixnums in input, and perform some extra validation.
2012-07-14 13:38:45 -05:00
Jesse D. McDonald
449b0cf478
Implement fixed-function reader for getting data into the interpreter.
2012-07-14 13:38:44 -05:00
Jesse D. McDonald