From 8975d167c849f54664be8d5da418cd909694d26f Mon Sep 17 00:00:00 2001 From: _ov4 Date: Tue, 20 Oct 2026 11:04:06 +0000 Subject: feat(library): add experimental string CHR function Co-Authored-By: Claude Opus 5.5 --- tests/library/exp-string/expected.txt | 4 ++++ tests/library/exp-string/notes.md | 2 ++ tests/library/exp-string/program.cps | 8 ++++++++ 3 files changed, 14 insertions(+) (limited to 'tests/library/exp-string') diff --git a/tests/library/exp-string/expected.txt b/tests/library/exp-string/expected.txt index 88c9a2f..0680cf2 100644 --- a/tests/library/exp-string/expected.txt +++ b/tests/library/exp-string/expected.txt @@ -35,3 +35,7 @@ ABC 65:65 0:0:0 255 +AZ +65 +1:0 +65:255 diff --git a/tests/library/exp-string/notes.md b/tests/library/exp-string/notes.md index f360410..7eddda1 100644 --- a/tests/library/exp-string/notes.md +++ b/tests/library/exp-string/notes.md @@ -17,3 +17,5 @@ LCASE converts AbC@19 to abc@19 without modifying the source. Its CHAR overload UCASE converts AbC@19 to ABC@19 without modifying the source. Its CHAR overload returns CHAR H for h or H and preserves @, as in guide section 5.5. Empty length stays zero; two leading NULs survive conversion and letters after them still become ABC. ASC returns 65 for CHAR A and the first byte of ABCDEFGH, zero for empty strings or NUL, and 255 for a byte with all eight bits set. These byte-code functions are compiler/library extensions. + +CHR codes 65 and 90 concatenate to AZ; converting A to a code and back preserves 65. Code zero produces one retained NUL byte. Taking the low eight bits gives 65 for 321 and 255 for -1. diff --git a/tests/library/exp-string/program.cps b/tests/library/exp-string/program.cps index dfa5b47..e789e54 100644 --- a/tests/library/exp-string/program.cps +++ b/tests/library/exp-string/program.cps @@ -45,6 +45,7 @@ CALL CheckMid() CALL CheckLCase() CALL CheckUCase() CALL CheckAsc() +CALL CheckChr() PROCEDURE CheckLeft() DECLARE Letters : _EXP_STRING((C_STRING)"ABCDEFGH") @@ -115,3 +116,10 @@ PROCEDURE CheckAsc() OUTPUT _EXP_STRING_ASC(Empty), ":", _EXP_STRING_ASC(Nuls), ":", _EXP_STRING_ASC('\0') OUTPUT _EXP_STRING_ASC(High) ENDPROCEDURE + +PROCEDURE CheckChr() + CALL _EXP_STRING_OUTPUT(_EXP_STRING_CHR(65) & _EXP_STRING_CHR(90)) + OUTPUT _EXP_STRING_ASC(_EXP_STRING_CHR(_EXP_STRING_ASC('A'))) + OUTPUT _EXP_STRING_LENGTH(_EXP_STRING_CHR(0)), ":", _EXP_STRING_ASC(_EXP_STRING_CHR(0)) + OUTPUT _EXP_STRING_ASC(_EXP_STRING_CHR(321)), ":", _EXP_STRING_ASC(_EXP_STRING_CHR(-1)) +ENDPROCEDURE -- cgit v1.3.1-4-g156e