complete the skeleton of dquotes.subx

Still some failing tests:
  - emit-string-literal-data doesn't ignore metadata when computing the
    length of literal strings
  - emit-string-literal-data doesn't handle escape sequences

One issue doesn't have a failing test:
  - emit-metadata doesn't handle string literals containing '/'

All these open issues involve a common design question: how to parse a
'word' that includes a string literal that may include spaces.

For everything else I know words can't contain spaces and datums can't
contain slashes. But for string literals things are tougher.

1 files changed, 101 insertions, 3 deletions

diff --git a/subx/066print-int.subx b/subx/066print-int.subx
index 0715b414..1280f348 100644
--- a/subx/066print-int.subx
+++ b/subx/066print-int.subx
@@ -6,7 +6,7 @@
 # . 1-3 bytes   3 bits              2 bits          3 bits        3 bits      3 bits        2 bits      2 bits      0/1/2/4 bytes   0/1/2/4 bytes
 
 #? Entry:  # run a single test, while debugging
-#?     e8/call test-print-int32-buffered/disp32
+#?     e8/call test-print-int32/disp32
 #?     # syscall(exit, Num-test-failures)
 #?     8b/copy                         0/mod/indirect  5/rm32/.disp32            .             .           3/r32/EBX   Num-test-failures/disp32          # copy *Num-test-failures to EBX
 #?     b8/copy-to-EAX  1/imm32/exit
@@ -171,8 +171,97 @@ test-print-byte-buffered:
     # . end
     c3/return
 
+print-int32:  # f : (address stream), n : int -> <void>
+    # pseudocode:
+    #  write(f, "0x")
+    #  ECX = 28
+    #  while true
+    #    if (ECX < 0) break
+    #    EAX = n >> ECX
+    #    EAX = EAX & 0xf
+    #    append-byte(f, AL)
+    #    ECX -= 4
+    #
+    # . prolog
+    55/push-EBP
+    89/copy                         3/mod/direct    5/rm32/EBP    .           .             .           4/r32/ESP   .               .                 # copy ESP to EBP
+    # . save registers
+    50/push-EAX
+    51/push-ECX
+    # ECX = 28
+    b9/copy-to-ECX  0x1c/imm32
+$print-int32:print-hex-prefix:
+    # write(f, "0x")
+    # . . push args
+    68/push  "0x"/imm32
+    ff          6/subop/push        1/mod/*+disp8   5/rm32/EBP    .           .             .           .           8/disp8         .                 # push *(EBP+8)
+    # . . call
+    e8/call  write/disp32
+    # . . discard args
+    81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               8/imm32           # add to ESP
+$print-int32:loop:
+    # if (ECX < 0) break
+    81          7/subop/compare     3/mod/direct    1/rm32/ECX    .           .             .           .           .               0/imm32           # compare ECX
+    7c/jump-if-lesser  $print-int32:end/disp8
+    # EAX = n >> ECX
+    8b/copy                         1/mod/*+disp8   5/rm32/EBP    .           .             .           0/r32/EAX   0xc/disp8       .                 # copy *(EBP+12) to EAX
+    d3/>>ECX    5/subop/pad-zeroes  3/mod/direct    0/rm32/EAX    .           .             .           .           .               .                 # shift EAX right by ECX bits, padding zeroes
+    # EAX = to-hex-char(AL)
+    25/and-EAX  0xf/imm32
+    e8/call  to-hex-char/disp32
+    # append-byte(f, AL)
+    # . . push args
+    50/push-EAX
+    ff          6/subop/push        1/mod/*+disp8   5/rm32/EBP    .           .             .           .           8/disp8         .                 # push *(EBP+8)
+    # . . call
+    e8/call  append-byte/disp32
+    # . . discard args
+    81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               8/imm32           # add to ESP
+    # ECX -= 4
+    81          5/subop/subtract    3/mod/direct    1/rm32/ECX    .           .             .           .           .               4/imm32           # subtract from ECX
+    eb/jump  $print-int32:loop/disp8
+$print-int32:end:
+    # . restore registers
+    59/pop-to-ECX
+    58/pop-to-EAX
+    # . epilog
+    89/copy                         3/mod/direct    4/rm32/ESP    .           .             .           5/r32/EBP   .               .                 # copy EBP to ESP
+    5d/pop-to-EBP
+    c3/return
+
+test-print-int32:
+    # - check that print-int32 prints the hex textual representation
+    # setup
+    # . clear-stream(_test-stream)
+    # . . push args
+    68/push  _test-stream/imm32
+    # . . call
+    e8/call  clear-stream/disp32
+    # . . discard args
+    81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               4/imm32           # add to ESP
+    # print-int32(_test-stream, 0x8899aa)
+    # . . push args
+    68/push  0x8899aa/imm32
+    68/push  _test-stream/imm32
+    # . . call
+    e8/call  print-int32/disp32
+    # . . discard args
+    81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               8/imm32           # add to ESP
+    # check-stream-equal(_test-stream, "0x008899aa", msg)
+    # . . push args
+    68/push  "F - test-print-int32"/imm32
+    68/push  "0x008899aa"/imm32
+    68/push  _test-stream/imm32
+    # . . call
+    e8/call  check-stream-equal/disp32
+    # . . discard args
+    81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               0xc/imm32         # add to ESP
+    # . end
+    c3/return
+
 print-int32-buffered:  # f : (address buffered-file), n : int -> <void>
     # pseudocode:
+    #  write-buffered(f, "0x")
     #  ECX = 28
     #  while true
     #    if (ECX < 0) break
@@ -189,6 +278,15 @@ print-int32-buffered:  # f : (address buffered-file), n : int -> <void>
     51/push-ECX
     # ECX = 28
     b9/copy-to-ECX  0x1c/imm32
+$print-int32-buffered:print-hex-prefix:
+    # write-buffered(f, "0x")
+    # . . push args
+    68/push  "0x"/imm32
+    ff          6/subop/push        1/mod/*+disp8   5/rm32/EBP    .           .             .           .           8/disp8         .                 # push *(EBP+8)
+    # . . call
+    e8/call  write-buffered/disp32
+    # . . discard args
+    81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               8/imm32           # add to ESP
 $print-int32-buffered:loop:
     # if (ECX < 0) break
     81          7/subop/compare     3/mod/direct    1/rm32/ECX    .           .             .           .           .               0/imm32           # compare ECX
@@ -271,10 +369,10 @@ test-print-int32-buffered:
 #?     # . . discard args
 #?     81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               8/imm32           # add to ESP
 #?     # }}}
-    # check-stream-equal(_test-stream, "008899aa", msg)
+    # check-stream-equal(_test-stream, "0x008899aa", msg)
     # . . push args
     68/push  "F - test-print-int32-buffered"/imm32
-    68/push  "008899aa"/imm32
+    68/push  "0x008899aa"/imm32
     68/push  _test-stream/imm32
     # . . call
     e8/call  check-stream-equal/disp32