| Commit message (Collapse) | Author | Age |
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Every other operation has a three-letter name, so this change makes
the operation names more consistent.
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If an operator requires an integer value but instead receives a list
value that contains a single integer, that integer will be extracted
and used instead.
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The <dbg> operator previously only showed the value on the top of the
stack, but now it will list every value.
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The <fnd> operator returns the index of the first element in a list
with the given value.
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The <nth> operator extracts the nth integer from a list.
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The <dbg> operator will print the value that is currently at the top of
the expression stack as an info-level log message, to help with
debugging complex expressions.
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Massive improvement. Label references can be used anywhere in the
program, with the program being assembled repeatedly until all labels
have stabilised. The bytecode stage will just be a tiny stage tacked
onto the end, rather than the old bytecode stage that would resolve
labels and expressions.
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This is a more memorable name, and can be implemented for lists in the
future as well.
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The <abs> operator returns the absolute value of an integer.
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The <tal> operator returns the number of set bits in the binary
representation of an integer. For negative numbers, only a single sign
bit is counted in the result.
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The <len> operator returns the width of an integer in bits, using the
same calculation as for packing an integer into a bit field.
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The language is now more general, the code is better structured, error
reporting is more detailed, and many new language features have
been implemented:
- conditional blocks
- first-class strings
- more expression operators
- binary literals
- negative values
- invocations in constant expressions
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