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Text File | 1992-11-29 | 3.1 KB | 77 lines | [TEXT/MSET] |
- STRING -- : name
- A standard class. This class is changed radically from Neon! We now keep
- two offsets into a string - POS and LIM. POS marks the "current" position,
- and LIM the "current" end. Most string operations operate on the substring
- delimited by POS and LIM, which we call the active part of the string. We
- also keep the size of the string (the real size, that is) in an ivar, so
- that we can get it quickly without a system call. See also class string+.
- STRING+ -- : name
- A standard class, subclass of string. Provides many extensions.
-
-
- " Standard delimiter.
- & -- n : char
- Leave ascii value of next char in stream. Same as ascii.
- ." Will print to the console text delimited by ".
- ASCII -- n : char
- Leave ascii value of next char in stream. Same as &.
- BL -- 32 A constant.
- BLANKS addr n --
- Fills memory with blanks (ascii 32) starting at addr for n bytes.
- RET -- 13
- A constant, returns ascii value of a carriage return character.
- ," -- Add text till " to the dictionary.
- ,"STR" -- Adds text delimited by " at the start and end.
-
-
- STRING COMPARISONS
-
- CASE? -- b
- A value. True if case to be significant in comparisons done by CMPSTR and
- string+ objects (does not affect string objects).
- CMPSTR addr1 len1 addr2 len2 -- n
- Compares 2 strings. Case is significant if CASE? is set to true. Returns:
- -1 if first string low, 0 if strings are equal, 1 if first string high. We
- assume the lengths are both less than 64K.
- $= addr1 len1 addr2 len2 -- result
- Compares string1 to string2, both given as the first byte of text (addr)
- and the number of bytes to compare (len). Essentially used to do
- alphabetical sorts with a being less than b and so forth, but note that a
- (ascii 97) still is "less than" B (ascii 66). Although A will be less than
- a. Result = -1 if string1 is less than string2, = 0 if strings are equal,
- = 1 if string 1 is greater than string2. A Toolbox call to IUMagString.
- See IM for complete detail.
- S= addr1 len1 addr2 len2 -- b
- Case sensitive string comparison, true if equal.
-
-
- PASCAL TYPE COUNTED STRINGS
-
- >STR255 addr1 len addr2 -- addr2
- Converts text beginning at addr1 for len characters to a str255 type string
- at addr2.
- BUF255 -- addr A 256-byte buffer for str255 operations.
- COUNT str255 -- addr len
- Converts a Pascal type string ( str255 ) to the addr len format.
- STR255 addr len -- ^buf255
- Converts text beginning at addr for len characters to a str255 type string
- at buf255, leaving the addr of buf255. Note that you should use the string
- right away as the next call to str255 will overwrite the buffer.
-
-
- STRING CONSTANTS
-
- SCON -- : name text
- Defines a string constant. Change from Neon: the first nonblank char after
- the name of the SCON is the delimiter. So " can be used as usual, but
- anything else can be used instead, e.g.: scon <name> /string containing "
- as non-delimiter/ Example: scon myscon "test"
- INSTEAD c-old c-new --
- May be used just after a SCON is defined. Within the SCON, it replaces any
- occurrences of c-old with c-new. This operation is useful for creating
- SCONs containing special characters such as tab.
-
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