mirror of
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attr
This commit is contained in:
Irmen de Jong
parent
18526469ed
commit
9b68722df3
@ -6,170 +6,187 @@ Written by Irmen de Jong (irmen@razorvine.net)
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License: GNU GPL 3.0, see LICENSE
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"""
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from typing import List, Set
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import attr
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from ply.yacc import yacc
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from .symbols import SourceRef, AstNode
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from typing import Union
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from .symbols import SourceRef
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from .lexer import tokens, lexer, find_tok_column # get the lexer tokens. required.
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start = "start"
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@attr.s(cmp=False, slots=True, frozen=False)
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class AstNode:
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sourceref = attr.ib(type=SourceRef)
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@property
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def lineref(self) -> str:
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return "src l. " + str(self.sourceref.line)
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def print_tree(self) -> None:
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def tostr(node: AstNode, level: int) -> None:
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if not isinstance(node, AstNode):
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return
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indent = " " * level
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name = getattr(node, "name", "")
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print(indent, node.__class__.__name__, repr(name))
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try:
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variables = vars(node).items()
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except TypeError:
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return
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for name, value in variables:
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if isinstance(value, AstNode):
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tostr(value, level + 1)
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if isinstance(value, (list, tuple, set)):
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if len(value) > 0:
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elt = list(value)[0]
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if isinstance(elt, AstNode) or name == "nodes":
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print(indent, " >", name, "=")
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for elt in value:
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tostr(elt, level + 2)
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tostr(self, 0)
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@attr.s(cmp=False)
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class Module(AstNode):
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def __init__(self, nodes: List[AstNode], sourceref: SourceRef) -> None:
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super().__init__(sourceref)
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self.nodes = nodes or []
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nodes = attr.ib(type=list)
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@attr.s(cmp=False)
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class Directive(AstNode):
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def __init__(self, name: str, args, sourceref: SourceRef) -> None:
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super().__init__(sourceref)
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self.name = name
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self.args = args or []
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class Block(AstNode):
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def __init__(self, name: str, address, scope, sourceref: SourceRef) -> None:
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super().__init__(sourceref)
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self.name = name
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self.address = address
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self.scope = scope
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name = attr.ib(type=str)
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args = attr.ib(type=list, default=attr.Factory(list))
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@attr.s(cmp=False)
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class Scope(AstNode):
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def __init__(self, nodes: List[AstNode], sourceref: SourceRef) -> None:
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super().__init__(sourceref)
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self.nodes = nodes
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nodes = attr.ib(type=list)
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@attr.s(cmp=False)
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class Block(AstNode):
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scope = attr.ib(type=Scope)
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name = attr.ib(type=str, default=None)
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address = attr.ib(type=int, default=None)
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@attr.s(cmp=False)
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class Label(AstNode):
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def __init__(self, name: str, sourceref: SourceRef) -> None:
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super().__init__(sourceref)
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self.name = name
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name = attr.ib(type=str)
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@attr.s(cmp=False)
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class Register(AstNode):
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def __init__(self, name: str, sourceref: SourceRef) -> None:
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super().__init__(sourceref)
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self.name = name
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name = attr.ib(type=str)
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@attr.s(cmp=False)
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class PreserveRegs(AstNode):
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def __init__(self, registers, sourceref: SourceRef) -> None:
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super().__init__(sourceref)
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self.registers = registers
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registers = attr.ib(type=str)
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@attr.s(cmp=False)
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class Assignment(AstNode):
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def __init__(self, lhs, rhs, sourceref: SourceRef) -> None:
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super().__init__(sourceref)
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self.lhs = lhs
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self.rhs = rhs
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left = attr.ib() # type: Union[str, TargetRegisters, Dereference]
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right = attr.ib()
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@attr.s(cmp=False)
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class AugAssignment(Assignment):
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def __init__(self, lhs, operator: str, rhs, sourceref: SourceRef) -> None:
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super().__init__(lhs, rhs, sourceref)
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self.operator = operator
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operator = attr.ib(type=str)
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@attr.s(cmp=False)
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class SubCall(AstNode):
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def __init__(self, target, preserveregs, arguments, sourceref: SourceRef) -> None:
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super().__init__(sourceref)
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self.target = target
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self.preserveregs = preserveregs
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self.arguments = arguments
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target = attr.ib()
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preserve_regs = attr.ib()
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arguments = attr.ib()
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@attr.s(cmp=False)
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class Return(AstNode):
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def __init__(self, valueA, valueX, valueY, sourceref: SourceRef) -> None:
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super().__init__(sourceref)
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self.valueA = valueA
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self.valueX = valueX
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self.valueY = valueY
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value_A = attr.ib(default=None)
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value_X = attr.ib(default=None)
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value_Y = attr.ib(default=None)
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@attr.s(cmp=False)
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class TargetRegisters(AstNode):
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def __init__(self, registers: List[str], sourceref: SourceRef) -> None:
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super().__init__(sourceref)
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self.registers = registers
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registers = attr.ib(type=list)
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def add_register(self, register) -> None:
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def add(self, register: str) -> None:
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self.registers.append(register)
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@attr.s(cmp=False)
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class InlineAssembly(AstNode):
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def __init__(self, assembly: str, sourceref: SourceRef) -> None:
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super().__init__(sourceref)
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self.assembly = assembly
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assembly = attr.ib(type=str)
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@attr.s(cmp=False)
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class VarDef(AstNode):
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def __init__(self, name: str, vartype, datatype, value, sourceref: SourceRef) -> None:
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super().__init__(sourceref)
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self.name = name
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self.vartype = vartype
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self.datatype = datatype
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self.value = value
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name = attr.ib(type=str)
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vartype = attr.ib()
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datatype = attr.ib()
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value = attr.ib(default=None)
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@attr.s(cmp=False, slots=True)
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class Datatype(AstNode):
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def __init__(self, name: str, dimension, sourceref: SourceRef) -> None:
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super().__init__(sourceref)
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self.name = name
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self.dimension = dimension
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name = attr.ib(type=str)
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dimension = attr.ib(type=list, default=None)
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@attr.s(cmp=False)
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class Subroutine(AstNode):
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def __init__(self, name: str, paramspec, resultspec, code, sourceref: SourceRef) -> None:
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super().__init__(sourceref)
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self.name = name
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self.paramspec = paramspec
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self.resultspec = resultspec
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self.code = code
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name = attr.ib(type=str)
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param_spec = attr.ib()
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result_spec = attr.ib()
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scope = attr.ib(type=Scope, default=None)
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address = attr.ib(type=int, default=None)
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def __attrs_post_init__(self):
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if self.scope is not None and self.address is not None:
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raise ValueError("subroutine must have either a scope or an address, not both")
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@attr.s(cmp=False)
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class Goto(AstNode):
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def __init__(self, target, ifstmt, condition, sourceref: SourceRef) -> None:
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super().__init__(sourceref)
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self.target = target
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self.ifstmt = ifstmt
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self.condition = condition
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target = attr.ib()
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if_stmt = attr.ib(default=None)
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condition = attr.ib(default=None)
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@attr.s(cmp=False)
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class Dereference(AstNode):
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def __init__(self, location, datatype, sourceref: SourceRef) -> None:
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super().__init__(sourceref)
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self.location = location
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self.datatype = datatype
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location = attr.ib()
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datatype = attr.ib()
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@attr.s(cmp=False, slots=True)
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class CallTarget(AstNode):
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def __init__(self, target, address_of: bool, sourceref: SourceRef) -> None:
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super().__init__(sourceref)
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self.target = target
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self.address_of = address_of
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target = attr.ib()
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address_of = attr.ib(type=bool)
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@attr.s(cmp=False, slots=True)
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class CallArgument(AstNode):
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def __init__(self, name: str, value, sourceref: SourceRef) -> None:
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super().__init__(sourceref)
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self.name = name
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self.value = value
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value = attr.ib()
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name = attr.ib(type=str, default=None)
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@attr.s(cmp=False)
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class UnaryOp(AstNode):
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def __init__(self, operator, operand, sourceref: SourceRef) -> None:
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super().__init__(sourceref)
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self.operator = operator
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self.operand = operand
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operator = attr.ib(type=str)
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operand = attr.ib()
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@attr.s(cmp=False, slots=True)
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class Expression(AstNode):
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def __init__(self, lhs, operator, rhs, sourceref: SourceRef) -> None:
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super().__init__(sourceref)
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self.lhs = lhs
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self.operator = operator
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self.rhs = rhs
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left = attr.ib()
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operator = attr.ib(type=str)
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right = attr.ib()
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def p_start(p):
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@ -178,7 +195,7 @@ def p_start(p):
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| module_elements
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"""
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if p[1]:
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p[0] = Module(p[1], _token_sref(p, 1))
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p[0] = Module(nodes=p[1], sourceref=_token_sref(p, 1))
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def p_module(p):
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@ -207,9 +224,9 @@ def p_directive(p):
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| DIRECTIVE directive_args ENDL
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"""
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if len(p) == 2:
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p[0] = Directive(p[1], None, _token_sref(p, 1))
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p[0] = Directive(name=p[1], sourceref=_token_sref(p, 1))
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else:
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p[0] = Directive(p[1], p[2], _token_sref(p, 1))
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p[0] = Directive(name=p[1], args=p[2], sourceref=_token_sref(p, 1))
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def p_directive_args(p):
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@ -236,21 +253,21 @@ def p_block_name_addr(p):
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"""
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block : BITINVERT NAME INTEGER endl_opt scope
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"""
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p[0] = Block(p[2], p[3], p[5], _token_sref(p, 1))
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p[0] = Block(name=p[2], address=p[3], scope=p[5], sourceref=_token_sref(p, 1))
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def p_block_name(p):
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"""
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block : BITINVERT NAME endl_opt scope
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"""
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p[0] = Block(p[2], None, p[4], _token_sref(p, 1))
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p[0] = Block(name=p[2], scope=p[4], sourceref=_token_sref(p, 1))
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def p_block(p):
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"""
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block : BITINVERT endl_opt scope
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"""
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p[0] = Block(None, None, p[3], _token_sref(p, 1))
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p[0] = Block(scope=p[3], sourceref=_token_sref(p, 1))
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def p_endl_opt(p):
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@ -265,7 +282,7 @@ def p_scope(p):
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"""
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scope : '{' scope_elements_opt '}'
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"""
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p[0] = Scope(p[2], _token_sref(p, 1))
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p[0] = Scope(nodes=p[2], sourceref=_token_sref(p, 1))
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def p_scope_elements_opt(p):
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@ -304,28 +321,28 @@ def p_label(p):
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"""
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label : LABEL
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"""
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p[0] = Label(p[1], _token_sref(p, 1))
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p[0] = Label(name=p[1], sourceref=_token_sref(p, 1))
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def p_inlineasm(p):
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"""
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inlineasm : INLINEASM ENDL
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"""
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p[0] = InlineAssembly(p[1], _token_sref(p, 1))
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p[0] = InlineAssembly(assembly=p[1], sourceref=_token_sref(p, 1))
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def p_vardef(p):
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"""
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vardef : VARTYPE type_opt NAME ENDL
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"""
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p[0] = VarDef(p[3], p[1], p[2], None, _token_sref(p, 1))
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p[0] = VarDef(name=p[3], vartype=p[1], datatype=p[2], sourceref=_token_sref(p, 1))
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def p_vardef_value(p):
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"""
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vardef : VARTYPE type_opt NAME IS expression
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"""
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p[0] = VarDef(p[3], p[1], p[2], p[5], _token_sref(p, 1))
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p[0] = VarDef(name=p[3], vartype=p[1], datatype=p[2], value=p[5], sourceref=_token_sref(p, 1))
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def p_type_opt(p):
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@ -335,9 +352,9 @@ def p_type_opt(p):
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| empty
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"""
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if len(p) == 5:
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p[0] = Datatype(p[1], p[3], _token_sref(p, 1))
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p[0] = Datatype(name=p[1], dimension=p[3], sourceref=_token_sref(p, 1))
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elif len(p) == 2:
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p[0] = Datatype(p[1], None, _token_sref(p, 1))
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p[0] = Datatype(name=p[1], sourceref=_token_sref(p, 1))
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def p_dimensions(p):
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@ -364,7 +381,13 @@ def p_subroutine(p):
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"""
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subroutine : SUB NAME '(' sub_param_spec ')' RARROW '(' sub_result_spec ')' subroutine_body ENDL
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"""
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p[0] = Subroutine(p[1], p[3], p[7], p[9], _token_sref(p, 1))
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body = p[10]
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if isinstance(body, Scope):
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p[0] = Subroutine(name=p[2], param_spec=p[4], result_spec=p[8], scope=body, sourceref=_token_sref(p, 1))
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elif isinstance(body, int):
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p[0] = Subroutine(name=p[2], param_spec=p[4], result_spec=p[8], address=body, sourceref=_token_sref(p, 1))
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else:
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raise TypeError("subroutine_body", p.slice)
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def p_sub_param_spec(p):
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@ -457,14 +480,14 @@ def p_incrdecr(p):
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incrdecr : assignment_target INCR
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| assignment_target DECR
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"""
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p[0] = UnaryOp(p[2], p[1], _token_sref(p, 1))
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p[0] = UnaryOp(operator=p[2], operand=p[1], sourceref=_token_sref(p, 1))
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def p_call_subroutine(p):
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"""
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subroutine_call : calltarget preserveregs_opt '(' call_arguments_opt ')'
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"""
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p[0] = SubCall(p[1], p[2], p[4], _token_sref(p, 1))
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p[0] = SubCall(target=p[1], preserve_regs=p[2], arguments=p[4], sourceref=_token_sref(p, 1))
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def p_preserveregs_opt(p):
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@ -479,7 +502,7 @@ def p_preserveregs(p):
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"""
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preserveregs : PRESERVEREGS
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"""
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p[0] = PreserveRegs(p[1], _token_sref(p, 1))
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p[0] = PreserveRegs(registers=p[1], sourceref=_token_sref(p, 1))
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def p_call_arguments_opt(p):
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@ -508,9 +531,9 @@ def p_call_argument(p):
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| NAME IS expression
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"""
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if len(p) == 2:
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p[0] = CallArgument(None, p[1], _token_sref(p, 1))
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p[0] = CallArgument(value=p[1], sourceref=_token_sref(p, 1))
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elif len(p) == 4:
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p[0] = CallArgument(p[1], p[3], _token_sref(p, 1))
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p[0] = CallArgument(name=p[1], value=p[3], sourceref=_token_sref(p, 1))
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def p_return(p):
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@ -521,41 +544,41 @@ def p_return(p):
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| RETURN expression ',' expression ',' expression
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"""
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if len(p) == 2:
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p[0] = Return(None, None, None, _token_sref(p, 1))
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p[0] = Return(sourceref=_token_sref(p, 1))
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elif len(p) == 3:
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p[0] = Return(p[2], None, None, _token_sref(p, 1))
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p[0] = Return(value_A=p[2], sourceref=_token_sref(p, 1))
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elif len(p) == 5:
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p[0] = Return(p[2], p[4], None, _token_sref(p, 1))
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p[0] = Return(value_A=p[2], value_X=p[4], sourceref=_token_sref(p, 1))
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elif len(p) == 7:
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p[0] = Return(p[2], p[4], p[6], _token_sref(p, 1))
|
||||
p[0] = Return(value_A=p[2], value_X=p[4], value_Y=p[6], sourceref=_token_sref(p, 1))
|
||||
|
||||
|
||||
def p_register(p):
|
||||
"""
|
||||
register : REGISTER
|
||||
"""
|
||||
p[0] = Register(p[1], _token_sref(p, 1))
|
||||
p[0] = Register(name=p[1], sourceref=_token_sref(p, 1))
|
||||
|
||||
|
||||
def p_goto(p):
|
||||
"""
|
||||
goto : GOTO calltarget
|
||||
"""
|
||||
p[0] = Goto(p[2], None, None, _token_sref(p, 1))
|
||||
p[0] = Goto(target=p[2], sourceref=_token_sref(p, 1))
|
||||
|
||||
|
||||
def p_conditional_goto_plain(p):
|
||||
"""
|
||||
conditional_goto : IF GOTO calltarget
|
||||
"""
|
||||
p[0] = Goto(p[3], p[1], None, _token_sref(p, 1))
|
||||
p[0] = Goto(target=p[3], if_stmt=p[1], sourceref=_token_sref(p, 1))
|
||||
|
||||
|
||||
def p_conditional_goto_expr(p):
|
||||
"""
|
||||
conditional_goto : IF expression GOTO calltarget
|
||||
"""
|
||||
p[0] = Goto(p[4], p[1], p[2], _token_sref(p, 1))
|
||||
p[0] = Goto(target=p[4], if_stmt=p[1], condition=p[2], sourceref=_token_sref(p, 1))
|
||||
|
||||
|
||||
def p_calltarget(p):
|
||||
@ -566,16 +589,16 @@ def p_calltarget(p):
|
||||
| dereference
|
||||
"""
|
||||
if len(p) == 2:
|
||||
p[0] = CallTarget(p[1], False, _token_sref(p, 1))
|
||||
p[0] = CallTarget(target=p[1], address_of=False, sourceref=_token_sref(p, 1))
|
||||
elif len(p) == 3:
|
||||
p[0] = CallTarget(p[2], True, _token_sref(p, 1))
|
||||
p[0] = CallTarget(target=p[2], address_of=True, sourceref=_token_sref(p, 1))
|
||||
|
||||
|
||||
def p_dereference(p):
|
||||
"""
|
||||
dereference : '[' dereference_operand ']'
|
||||
"""
|
||||
p[0] = Dereference(p[2][0], p[2][1], _token_sref(p, 1))
|
||||
p[0] = Dereference(location=p[2][0], datatype=p[2][1], sourceref=_token_sref(p, 1))
|
||||
|
||||
|
||||
def p_dereference_operand(p):
|
||||
@ -600,14 +623,14 @@ def p_assignment(p):
|
||||
assignment : assignment_target IS expression
|
||||
| assignment_target IS assignment
|
||||
"""
|
||||
p[0] = Assignment(p[1], p[3], _token_sref(p, 1))
|
||||
p[0] = Assignment(left=p[1], right=p[3], sourceref=_token_sref(p, 1))
|
||||
|
||||
|
||||
def p_aug_assignment(p):
|
||||
"""
|
||||
aug_assignment : assignment_target AUGASSIGN expression
|
||||
"""
|
||||
p[0] = AugAssignment(p[1], p[2], p[3], _token_sref(p, 1))
|
||||
p[0] = AugAssignment(left=p[1], operator=p[2], right=p[3], sourceref=_token_sref(p, 1))
|
||||
|
||||
|
||||
precedence = (
|
||||
@ -632,28 +655,28 @@ def p_expression(p):
|
||||
| expression EQUALS expression
|
||||
| expression NOTEQUALS expression
|
||||
"""
|
||||
p[0] = Expression(p[1], p[2], p[3], _token_sref(p, 1))
|
||||
p[0] = Expression(left=p[1], operator=p[2], right=p[3], sourceref=_token_sref(p, 1))
|
||||
|
||||
|
||||
def p_expression_uminus(p):
|
||||
"""
|
||||
expression : '-' expression %prec UNARY_MINUS
|
||||
"""
|
||||
p[0] = UnaryOp(p[1], p[2], _token_sref(p, 1))
|
||||
p[0] = UnaryOp(operator=p[1], operand=p[2], sourceref=_token_sref(p, 1))
|
||||
|
||||
|
||||
def p_expression_addressof(p):
|
||||
"""
|
||||
expression : BITAND symbolname %prec UNARY_ADDRESSOF
|
||||
"""
|
||||
p[0] = UnaryOp(p[1], p[2], _token_sref(p, 1))
|
||||
p[0] = UnaryOp(operator=p[1], operand=p[2], sourceref=_token_sref(p, 1))
|
||||
|
||||
|
||||
def p_unary_expression_bitinvert(p):
|
||||
"""
|
||||
expression : BITINVERT expression
|
||||
"""
|
||||
p[0] = UnaryOp(p[1], p[2], _token_sref(p, 1))
|
||||
p[0] = UnaryOp(operator=p[1], operand=p[2], sourceref=_token_sref(p, 1))
|
||||
|
||||
|
||||
def p_expression_group(p):
|
||||
@ -663,7 +686,7 @@ def p_expression_group(p):
|
||||
p[0] = p[2]
|
||||
|
||||
|
||||
def p_expression_ass_rhs(p):
|
||||
def p_expression_expr_value(p):
|
||||
"""expression : expression_value"""
|
||||
p[0] = p[1]
|
||||
|
||||
@ -694,13 +717,12 @@ def p_target_registers(p):
|
||||
| target_registers ',' register
|
||||
"""
|
||||
if len(p) == 2:
|
||||
p[0] = TargetRegisters([p[1]], _token_sref(p, 1))
|
||||
p[0] = TargetRegisters(registers=[p[1]], sourceref=_token_sref(p, 1))
|
||||
else:
|
||||
p[1].add_register(p[3])
|
||||
p[1].add(p[3])
|
||||
p[0] = p[1]
|
||||
|
||||
|
||||
|
||||
def p_empty(p):
|
||||
"""empty :"""
|
||||
pass
|
||||
|
||||
Loading…
Reference in New Issue
Block a user