mirror of
https://github.com/pmret/papermario.git
synced 2024-11-08 20:12:30 +01:00
608 lines
18 KiB
Python
Executable File
608 lines
18 KiB
Python
Executable File
#! /usr/bin/python3
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from sys import argv, stdin, stderr
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from lark import Lark, exceptions, Tree, Transformer, Visitor, v_args, Token
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from lark.visitors import Discard
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import traceback
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def eprint(*args, **kwargs):
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print(*args, file=stderr, **kwargs)
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#write_buf = ""
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def write(s):
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#global write_buf
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#write_buf += s
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print(s, end="")
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ANSI_RED = "\033[1;31;40m"
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ANSI_RESET = "\u001b[0m"
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def pairs(seq):
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i = iter(seq)
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prev = next(i)
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for item in i:
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yield prev, item
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prev = item
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script_parser = Lark(r"""
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block: "{" NEWLINE* (stmt STMT_SEP)* NEWLINE* "}"
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?stmt: call
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| label ":" -> label_decl
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| "goto" label -> label_goto
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| if_stmt
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| "return" -> return_stmt
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| "break" -> break_stmt
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| "sleep" expr -> sleep_stmt
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| "spawn" expr -> spawn_stmt
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| "await" expr -> await_stmt
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| lhs "=" "spawn" expr -> spawn_set_stmt
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| lhs set_op expr -> set_stmt
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| lhs ":=" expr -> set_const_stmt
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| bind_stmt
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| bind_set_stmt
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| "unbind" -> unbind_stmt
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| "group" expr -> set_group
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| suspend_stmt
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| resume_stmt
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| kill_stmt
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| loop_stmt
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| loop_until_stmt
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call: CNAME "(" [expr ("," expr)* [","]] ")"
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if_stmt: "if" expr if_op expr block ["else" block]
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?if_op: "==" -> if_op_eq
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| "!=" -> if_op_ne
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suspend_stmt: "suspend" control_type expr ("," control_type expr)* [","]
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resume_stmt: "resume" control_type expr ("," control_type expr)* [","]
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kill_stmt: "kill" control_type expr ("," control_type expr)* [","]
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?control_type: "group" -> control_type_group
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| "others" -> control_type_others
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| ["script"] -> control_type_script
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bind_stmt: "bind" expr "to" expr expr
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bind_set_stmt: lhs "=" "bind" expr "to" expr expr
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loop_stmt: "loop" [expr] block
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loop_until_stmt: "loop" block "until" expr if_op expr
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?expr: c_const_expr
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| ESCAPED_STRING
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| SIGNED_INT
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| DECIMAL
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| HEX_INT
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| CNAME
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?lhs: c_const_expr
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?set_op: "=" -> set_op_eq
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| "+=" -> set_op_add
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| "-=" -> set_op_sub
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| "*=" -> set_op_mul
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| "/=" -> set_op_div
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| "%=" -> set_op_mod
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c_const_expr: c_const_expr_internal
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c_const_expr_internal: "(" (c_const_expr_internal | NOT_PARENS)+ ")"
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NOT_PARENS: /[^()]+/
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STMT_SEP: (NEWLINE+ | ";")
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label: /[a-zA-Z0-9_]+/
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%import common.CNAME
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%import common.SIGNED_INT
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%import common.DECIMAL
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%import common.HEXDIGIT
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%import common.ESCAPED_STRING
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HEX_INT: ["+"|"-"] "0x" HEXDIGIT+
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LINE_COMMENT: "//" /[^\n]*/ NEWLINE
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%ignore LINE_COMMENT
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%import common.WS_INLINE
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%import common.NEWLINE
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%ignore WS_INLINE
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""", start="block", propagate_positions=True)#, parser="lalr", cache=True)
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class BaseCmd():
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def __init__(self, *args, **kwargs):
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self.args = args
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self.meta = kwargs.get("meta", None)
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self.context = [RootCtx()]
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def add_context(self, ctx):
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if not isinstance(ctx, CmdCtx):
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raise Exception()
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self.context.insert(0, ctx)
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# must be overloaded
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def opcode():
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raise Exception()
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def to_bytecode(self):
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return [ self.opcode(), len(self.args), *self.args ]
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def __str__(self):
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return f"Cmd({self.opcode():02X}, {', '.join(map(str, self.args))})"
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class Cmd(BaseCmd):
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def __init__(self, opcode, *args, **kwargs):
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super().__init__(*args, **kwargs)
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self._opcode = opcode
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def opcode(self):
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return self._opcode
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class BreakCmd(BaseCmd):
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def __init__(self, **kwargs):
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super().__init__(**kwargs)
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def opcode(self):
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for ctx in self.context:
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opcode = ctx.break_opcode(self.meta)
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if opcode:
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return opcode
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def __str__(self):
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return "BreakCmd"
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class CmdCtx():
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def break_opcode(self, meta):
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pass
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class RootCtx(CmdCtx):
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def break_opcode(self, meta):
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return 0x01
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class IfCtx(CmdCtx):
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pass
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class SwitchCtx(CmdCtx):
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def break_opcode(self, meta):
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return 0x22
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class LoopCtx(CmdCtx):
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def break_opcode(self, meta):
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return 0x07
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class LoopUntilCtx(CmdCtx):
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def break_opcode(self, meta):
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raise CompileError("breaking out of a loop..until is not supported (hint: use a label)", meta)
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class CompileError(Exception):
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def __init__(self, message, meta):
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super().__init__(message)
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self.meta = meta
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def is_fixed_var(v):
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if type(v) == int:
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if v <= -250000000:
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return False
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elif v <= -220000000:
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return True
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return False
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class LabelAllocation(Visitor):
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def __init__(self):
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super().__init__()
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self.labels = []
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def label_decl(self, tree):
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name = tree.children[0].children[0]
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if name in self.labels:
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raise CompileError(f"label `{name}' already declared", tree.meta)
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self.labels.append(name)
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def gen_label(self):
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self.labels.append("$generated")
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return len(self.labels) - 1
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@v_args(tree=True)
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class Compile(Transformer):
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SIGNED_INT = str
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HEX_INT = str
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def transform(self, tree):
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self.alloc = LabelAllocation()
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self.alloc.visit_topdown(tree)
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return super().transform(tree)
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def CNAME(self, name):
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return f"(Bytecode)(&{name})"
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def ESCAPED_STRING(self, str_with_quotes):
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return f"(Bytecode)({str_with_quotes})"
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NOT_PARENS = str
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def c_const_expr_internal(self, tree):
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return f"({' '.join(tree.children)})"
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def c_const_expr(self, tree):
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return f"(Bytecode){tree.children[0]}"
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def DECIMAL(self, v):
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# fixed-point
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return int((float(v) * 1024) - 230000000)
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def block(self, tree):
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# flatten children list
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flat = []
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for node in tree.children:
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if type(node) == list:
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flat += node
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elif isinstance(node, BaseCmd):
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flat.append(node)
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elif isinstance(node, Token) and (node.value.startswith("\n") or node.value == ";"):
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pass
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else:
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raise Exception(f"block statment {type(node)} is not a BaseCmd: {node}")
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return flat
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def call(self, tree):
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# TODO: type checking etc
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return Cmd(0x43, *tree.children, meta=tree.meta)
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def if_stmt(self, tree):
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a, op, b, block = tree.children
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for cmd in block:
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if isinstance(cmd, BaseCmd):
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cmd.add_context(IfCtx())
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return [ Cmd(op, a, b, meta=tree.meta), *block, Cmd(0x13) ]
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def if_op_eq(self, tree): return 0x0A
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def if_op_ne(self, tree): return 0x0B
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def loop_stmt(self, tree):
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expr = tree.children.pop(0) if len(tree.children) > 1 else 0
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block = tree.children[0]
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for cmd in block:
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if isinstance(cmd, BaseCmd):
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cmd.add_context(LoopCtx())
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return [ Cmd(0x05, expr, meta=tree.meta), *block, Cmd(0x06) ]
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# loop..until pseudoinstruction
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def loop_until_stmt(self, tree):
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block, a, op, b = tree.children
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for cmd in block:
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if isinstance(cmd, BaseCmd):
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cmd.add_context(LoopUntilCtx())
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label = self.alloc.gen_label()
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return [
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Cmd(0x03, label, meta=tree.meta), # label:
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*block,
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Cmd(op, a, b, meta=tree.meta), # if a op b
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Cmd(0x04, label, meta=tree.meta), # goto label
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Cmd(0x13, meta=tree.meta), # end if
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]
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def return_stmt(self, tree):
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return Cmd(0x02, meta=tree.meta)
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def break_stmt(self, tree):
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return BreakCmd(meta=tree.meta)
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def set_group(self, tree):
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return Cmd(0x4D, tree.children[0], meta=tree.meta)
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def suspend_stmt(self, tree):
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commands = []
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for opcodes, expr in pairs(tree.children):
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if not "suspend" in opcodes:
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raise CompileError(f"`suspend {opcodes['__control_type__']}' not supported", meta=tree.meta)
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commands.append(Cmd(opcodes["suspend"], expr, meta=tree.meta))
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return commands
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def resume_stmt(self, tree):
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commands = []
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for opcodes, expr in pairs(tree.children):
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if not "resume" in opcodes:
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raise CompileError(f"`resume {opcodes['__control_type__']}' not supported", meta=tree.meta)
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commands.append(Cmd(opcodes["resume"], expr, meta=tree.meta))
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return commands
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def kill_stmt(self, tree):
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commands = []
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for opcodes, expr in pairs(tree.children):
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if not "kill" in opcodes:
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raise CompileError(f"`kill {opcodes['__control_type__']}' not supported", meta=tree.meta)
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commands.append(Cmd(opcodes["kill"], expr, meta=tree.meta))
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return commands
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def control_type_group(self, tree):
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return {
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"__control_type__": "group",
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"suspend": 0x4F,
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"resume": 0x50,
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}
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def control_type_others(self, tree):
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return {
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"__control_type__": "others",
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"suspend": 0x51,
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"resume": 0x52,
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}
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def control_type_script(self, tree):
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return {
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"__control_type__": "script",
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"suspend": 0x53,
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"resume": 0x54,
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"kill": 0x49,
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}
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def sleep_stmt(self, tree):
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return Cmd(0x08, tree.children[0], meta=tree.meta)
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def bind_stmt(self, tree):
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script, trigger, target = tree.children
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return Cmd(0x47, script, trigger, target, 1, 0, meta=tree.meta)
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def bind_set_stmt(self, tree):
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ret, script, trigger, target = tree.children
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return Cmd(0x47, script, trigger, target, 1, ret, meta=tree.meta)
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def unbind_stmt(self, tree):
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return Cmd(0x48, meta=tree.meta)
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def spawn_stmt(self, tree):
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return Cmd(0x44, tree.children[0], meta=tree.meta)
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def spawn_set_stmt(self, tree):
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lhs, script = tree.children
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return Cmd(0x45, script, lhs, meta=tree.meta)
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def await_stmt(self, tree):
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return Cmd(0x46, tree.children[0], meta=tree.meta)
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def set_stmt(self, tree):
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lhs, opcodes, rhs = tree.children
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if is_fixed_var(rhs):
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opcode = opcodes.get("float", None)
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if not opcode:
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raise CompileError(f"operation `{opcodes['__op__']}' not supported for floats", tree.meta)
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else:
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opcode = opcodes.get("int", None)
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if not opcode:
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raise CompileError(f"operation `{opcodes['__op__']}' not supported for ints", tree.meta)
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return Cmd(opcode, lhs, rhs)
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def set_const_stmt(self, tree):
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lhs, rhs = tree.children
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return Cmd(0x25, lhs, rhs)
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def set_op_eq(self, tree):
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return {
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"__op__": "=",
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"int": 0x24,
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"float": 0x26,
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}
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def set_op_add(self, tree):
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return {
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"__op__": "+",
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"int": 0x27,
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"float": 0x2C,
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}
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def set_op_sub(self, tree):
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return {
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"__op__": "-",
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"int": 0x28,
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"float": 0x2D,
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}
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def set_op_mul(self, tree):
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return {
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"__op__": "*",
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"int": 0x29,
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"float": 0x2E,
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}
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def set_op_div(self, tree):
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return {
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"__op__": "/",
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"int": 0x2A,
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"float": 0x2F,
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}
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def set_op_mod(self, tree):
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return {
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"__op__": "%",
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"int": 0x2B,
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}
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def label_decl(self, tree):
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label = tree.children[0]
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return Cmd(0x03, label, meta=tree.meta)
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def label_goto(self, tree):
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label = tree.children[0]
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return Cmd(0x04, label, meta=tree.meta)
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def label(self, tree):
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name = tree.children[0]
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if name in self.alloc.labels:
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return self.alloc.labels.index(name)
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raise CompileError(f"label `{name}' is undeclared", tree.meta)
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def compile_script(s):
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tree = script_parser.parse(s)
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#eprint(tree.pretty())
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commands = Compile().transform(tree)
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# add RETURN END if no explicit END (top-level `break') was given
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if next((cmd for cmd in commands if cmd.opcode() == 0x01), None) == None:
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commands += (Cmd(0x02), Cmd(0x01))
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return commands
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def read_until_closing_paren(depth=1, lex_strings=False):
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text = ""
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in_string = False
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string_escape = False
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while True:
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char = stdin.read(1)
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if len(char) == 0:
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# EOF
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return text
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if string_escape == True:
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string_escape = False
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elif char == "(" and not in_string:
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depth += 1
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elif char == ")" and not in_string:
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depth -= 1
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if depth == 0:
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break
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elif char == '"' and lex_strings:
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in_string = not in_string
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elif char == "\\" and in_string:
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string_escape = True
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text += char
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return text
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def read_line():
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line = ""
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while True:
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char = stdin.read(1)
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if len(char) == 0:
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# EOF
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return line
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if char == "\n":
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break
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line += char
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return line
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def gen_line_map(source, source_line_no = 1):
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line_map = {}
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output = ""
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output_line_no = 1
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for line in source.splitlines(True):
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if line[0] == "#":
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parts = line[2:-1].split(" ")
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source_line_no = int(parts[0])
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else:
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line_map[output_line_no] = source_line_no
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output += line
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output_line_no += 1
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source_line_no += 1
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return output, line_map
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# Expects output from C preprocessor on argv
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if __name__ == "__main__":
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line_no = 1
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char_no = 1
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file_info = []
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error = False
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macro_name = "" # captures recent UPPER_CASE identifier
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prev_char = ""
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while True:
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char = stdin.read(1)
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if len(char) == 0:
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# EOF
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write(macro_name)
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break
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if char == "#" and (prev_char == "\n" or prev_char == ""):
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# cpp line/file marker
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line = read_line()
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line_split = line[1:].split(" ")
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line_no = int(line_split[0])
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file_info = line_split[1:]
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write("#" + line + "\n")
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elif char == "(":
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filename = file_info[0][1:-1]
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# SCRIPT(...)
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if macro_name == "SCRIPT":
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script_source, line_map = gen_line_map(read_until_closing_paren(lex_strings=True), source_line_no=line_no)
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try:
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commands = compile_script(script_source)
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write("{\n")
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for command in commands:
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if command.meta:
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write(f"# {line_map[command.meta.line]} {file_info[0]}\n")
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write(" ")
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for word in command.to_bytecode():
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if type(word) == str:
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write(word)
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elif type(word) == int:
|
|
write(f"0x{word & 0xFFFFFFFF:X}")
|
|
else:
|
|
raise Exception(f"{command}.to_bytecode() gave {type(word)} {word}")
|
|
write(", ")
|
|
write("\n")
|
|
write("}")
|
|
except exceptions.UnexpectedEOF as e:
|
|
eprint(f"{filename}:{line_no}: {ANSI_RED}error{ANSI_RESET}: unterminated SCRIPT(...) macro")
|
|
error = True
|
|
except exceptions.UnexpectedCharacters as e:
|
|
line = line_map[e.line]
|
|
char = script_source[e.pos_in_stream]
|
|
allowed = e.allowed
|
|
|
|
eprint(f"{filename}:{line}: {ANSI_RED}script parse error{ANSI_RESET}: unexpected `{char}', expected {' or '.join(allowed)}")
|
|
eprint(e.get_context(script_source))
|
|
|
|
error = True
|
|
except exceptions.UnexpectedToken as e:
|
|
line = line_map[e.line]
|
|
|
|
eprint(f"{filename}:{line}: {ANSI_RED}script parse error{ANSI_RESET}: unexpected `{e.token}'")
|
|
eprint(e.get_context(script_source))
|
|
|
|
error = True
|
|
except exceptions.VisitError as e:
|
|
if type(e.orig_exc) == CompileError:
|
|
line = line_map[e.orig_exc.meta.line]
|
|
eprint(f"{filename}:{line}: {ANSI_RED}script compile error{ANSI_RESET}: {e.orig_exc}")
|
|
else:
|
|
eprint(f"{filename}:{line_no}: {ANSI_RED}internal script transform error{ANSI_RESET}")
|
|
traceback.print_exc()
|
|
error = True
|
|
except CompileError as e:
|
|
line = line_map[e.meta.line]
|
|
eprint(f"{filename}:{line}: {ANSI_RED}script compile error{ANSI_RESET}: {e}")
|
|
error = True
|
|
except Exception as e:
|
|
eprint(f"{filename}:{line_no}: {ANSI_RED}internal script compilation error{ANSI_RESET}")
|
|
traceback.print_exc()
|
|
error = True
|
|
|
|
line_no += script_source.count("\n")
|
|
write(f"\n# {line_no} {file_info[0]}\n")
|
|
else:
|
|
# leave non-macro in source
|
|
write(macro_name + char)
|
|
|
|
macro_name = ""
|
|
elif char == "_" or (char >= 'A' and char <= 'Z'):
|
|
macro_name += char
|
|
else:
|
|
write(macro_name + char)
|
|
macro_name = ""
|
|
|
|
if char == "\n":
|
|
char_no = 0
|
|
line_no += 1
|
|
|
|
char_no += 1
|
|
prev_char = char
|
|
|
|
if error:
|
|
exit(1)
|
|
else:
|
|
exit(0)
|