Remove the need for parens in `vector (routine ...) table` type.
Chris Pressey
7 years ago
| 9 | 9 |
* Implements the "union rule for trashes" when analyzing `if` blocks.
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| 10 | 10 |
* Even if we `goto` another routine, we can't trash an output.
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| 11 | 11 |
* `static` storage locations local to routines can now be defined within routines.
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|
12 |
* Small grammar change that obviates the need for parentheses in the type expression
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|
13 |
`vector (routine ...) table`.
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| 12 | 14 |
* Fixed bug where `trash` was not marking the location as being virtually altered.
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| 13 | 15 |
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| 14 | 16 |
0.11
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| 66 | 66 |
### And at some point...
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| 67 | 67 |
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| 68 | 68 |
* `const`s that can be used in defining the size of tables, etc.
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| 69 | |
* Remove the need for `forward` and `vector () table` (make grammar changes)
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69 |
* Remove the need for `forward` (lots of backpatching)
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| 70 | 70 |
* Tests, and implementation, ensuring a routine can be assigned to a vector of "wider" type
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| 71 | 71 |
* Check that the buffer being read or written to through pointer, appears in approporiate inputs or outputs set.
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| 72 | 72 |
(Associate each pointer with the buffer it points into.)
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| 73 | 73 |
* `static` pointers -- currently not possible because pointers must be zero-page, thus `@`, thus uninitialized.
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|
74 |
* Question the value of the "consistent initialization" principle for `if` statement analysis.
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| 74 | 75 |
* `interrupt` routines -- to indicate that "the supervisor" has stored values on the stack, so we can trash them.
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| 75 | 76 |
* Error messages that include the line number of the source code.
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| 76 | 77 |
* Add absolute addressing in shl/shr, absolute-indexed for add, sub, etc.
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| 536 | 536 |
Program ::= {TypeDefn} {Defn} {Routine}.
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| 537 | 537 |
TypeDefn::= "typedef" Type Ident<new>.
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| 538 | 538 |
Defn ::= Type Ident<new> [Constraints] (":" Literal | "@" LitWord).
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| 539 | |
Type ::= "(" Type ")" | TypeExpr ["table" TypeSize].
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|
539 |
Type ::= TypeTerm ["table" TypeSize].
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| 540 | 540 |
TypeExpr::= "byte"
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| 541 | 541 |
| "word"
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| 542 | 542 |
| "buffer" TypeSize
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| 543 | 543 |
| "pointer"
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| 544 | |
| "vector" Type
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544 |
| "vector" TypeTerm
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| 545 | 545 |
| "routine" Constraints
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546 |
| "(" Type ")"
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| 546 | 547 |
.
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| 547 | 548 |
TypeSize::= "[" LitWord "]".
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| 548 | 549 |
Constrnt::= ["inputs" LocExprs] ["outputs" LocExprs] ["trashes" LocExprs].
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| 86 | 86 |
word table[256] actor_delta
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| 87 | 87 |
word delta
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| 88 | 88 |
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| 89 | |
vector (logic_routine) table[256] actor_logic
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89 |
vector logic_routine table[256] actor_logic
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| 90 | 90 |
vector logic_routine dispatch_logic
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| 91 | 91 |
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| 92 | 92 |
byte table[32] press_fire_msg: "PRESS`FIRE`TO`PLAY"
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| 135 | 135 |
return size
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| 136 | 136 |
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| 137 | 137 |
def defn_type(self):
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|
138 |
type_ = self.defn_type_term()
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|
139 |
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|
140 |
if self.scanner.consume('table'):
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|
141 |
size = self.defn_size()
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|
142 |
type_ = TableType(type_, size)
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|
143 |
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|
144 |
return type_
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|
145 |
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146 |
def defn_type_term(self):
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| 138 | 147 |
type_ = None
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| 139 | 148 |
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| 140 | 149 |
if self.scanner.consume('('):
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| 147 | 156 |
elif self.scanner.consume('word'):
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| 148 | 157 |
type_ = TYPE_WORD
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| 149 | 158 |
elif self.scanner.consume('vector'):
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| 150 | |
type_ = self.defn_type()
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|
159 |
type_ = self.defn_type_term()
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| 151 | 160 |
if not isinstance(type_, RoutineType):
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| 152 | 161 |
raise SyntaxError("Vectors can only be of a routine, not %r" % type_)
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| 153 | 162 |
type_ = VectorType(type_)
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| 165 | 174 |
if type_name not in self.typedefs:
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| 166 | 175 |
raise SyntaxError("Undefined type '%s'" % type_name)
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| 167 | 176 |
type_ = self.typedefs[type_name]
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| 168 | |
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| 169 | |
if self.scanner.consume('table'):
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| 170 | |
size = self.defn_size()
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| 171 | |
type_ = TableType(type_, size)
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| 172 | 177 |
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| 173 | 178 |
return type_
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| 174 | 179 |
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