19989253606

Committed 06 Dec 2025 01:35PM UTC coverage: 84.457% (+1.4%) from 83.044%

Build # 19989253606

Build Type

Pull #801

github

Committed by

schnellerhase

Commit Message

Revert for demos, cwd more important than coverage

Pull Request Pull Request #801: Add `numba` backend

Run Details

340 of 368 new or added lines in 22 files covered. (92.39%)

6 existing lines in 3 files now uncovered.

4059 of 4806 relevant lines covered (84.46%)

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79.7

/ffcx/codegeneration/numba/implementation.py

# Copyright (C) 2025 Chris Richardson
#
# This file is part of FFCx. (https://www.fenicsproject.org)
#
# SPDX-License-Identifier:    LGPL-3.0-or-later
"""Numba implementation for output."""

import ffcx.codegeneration.lnodes as L


def build_initializer_lists(values):
    """Build list of values."""
    arr = "["
    if len(values.shape) == 1:
        return "[" + ", ".join(str(v) for v in values) + "]"
    elif len(values.shape) > 1:
        arr += ",\n".join(build_initializer_lists(v) for v in values)
    arr += "]"
    return arr


class Formatter:
    """Implementation for numba output backend."""

    def __init__(self, scalar) -> None:
        """Initialise."""
        self.scalar_type = scalar

    def format_section(self, section: L.Section) -> str:
        """Format a section."""
        # add new line before section
        comments = "# ------------------------ \n"
        comments += "# Section: " + section.name + "\n"
        comments += "# Inputs: " + ", ".join(w.name for w in section.input) + "\n"
        comments += "# Outputs: " + ", ".join(w.name for w in section.output) + "\n"
        declarations = "".join(self.format(s) for s in section.declarations)

        body = ""
        if len(section.statements) > 0:
            body = "".join(self.format(s) for s in section.statements)

        body += "# ------------------------ \n"
        return comments + declarations + body

    def format_statement_list(self, slist: L.StatementList) -> str:
        """Format a list of statements."""
        output = ""
        for s in slist.statements:
            output += self.format(s)
        return output

    def format_comment(self, c: L.Comment) -> str:
        """Format a comment."""
        return "# " + c.comment + "\n"

    def format_array_decl(self, arr: L.ArrayDecl) -> str:
        """Format an array declaration."""
        if arr.symbol.dtype == L.DataType.SCALAR:
            dtype = "A.dtype"
        elif arr.symbol.dtype == L.DataType.REAL:
            dtype = "coordinate_dofs.dtype"
        elif arr.symbol.dtype == L.DataType.INT:
            dtype = "np.int32"
        symbol = self.format(arr.symbol)
        if arr.values is None:
            return f"{symbol} = np.empty({arr.sizes}, dtype={dtype})\n"
        elif arr.values.size == 1:
            return f"{symbol} = np.full({arr.sizes}, {arr.values[0]}, dtype={dtype})\n"
        av = build_initializer_lists(arr.values)
        av = "np.array(" + av + f", dtype={dtype})"
        return f"{symbol} = {av}\n"

    def format_array_access(self, arr: L.ArrayAccess) -> str:
        """Format array access."""
        array = self.format(arr.array)
        idx = ", ".join(self.format(ix) for ix in arr.indices)
        return f"{array}[{idx}]"

    def format_multi_index(self, index: L.MultiIndex) -> str:
        """Format a multi-index."""
        return self.format(index.global_index)

    def format_variable_decl(self, v: L.VariableDecl) -> str:
        """Format a variable declaration."""
        sym = self.format(v.symbol)
        val = self.format(v.value)
        return f"{sym} = {val}\n"

    def format_nary_op(self, oper: L.NaryOp) -> str:
        """Format a n argument operation."""
        # Format children
        args = [self.format(arg) for arg in oper.args]

        # Apply parentheses
        for i in range(len(args)):
            if oper.args[i].precedence >= oper.precedence:
                args[i] = "(" + args[i] + ")"

        # Return combined string
        return f" {oper.op} ".join(args)

    def format_binary_op(self, oper: L.BinOp) -> str:
        """Format a binary operation."""
        # Format children
        lhs = self.format(oper.lhs)
        rhs = self.format(oper.rhs)

        # Apply parentheses
        if oper.lhs.precedence >= oper.precedence:
            lhs = f"({lhs})"
        if oper.rhs.precedence >= oper.precedence:
            rhs = f"({rhs})"

        # Return combined string
        return f"{lhs} {oper.op} {rhs}"

    def format_neg(self, val: L.Neg) -> str:
        """Format unary negation."""
        arg = self.format(val.arg)
        return f"-{arg}"

    def format_not(self, val: L.Not) -> str:
        """Format not operation."""
        arg = self.format(val.arg)
        return f"not({arg})"

    def format_andor(self, oper: L.And | L.Or) -> str:
        """Format and or or operation."""
        # Format children
        lhs = self.format(oper.lhs)
        rhs = self.format(oper.rhs)

        # Apply parentheses
        if oper.lhs.precedence >= oper.precedence:
            lhs = f"({lhs})"
        if oper.rhs.precedence >= oper.precedence:
            rhs = f"({rhs})"

        opstr = {"||": "or", "&&": "and"}[oper.op]

        # Return combined string
        return f"{lhs} {opstr} {rhs}"

    def format_literal_float(self, val: L.LiteralFloat) -> str:
        """Format a literal float."""
        return f"{val.value}"

    def format_literal_int(self, val: L.LiteralInt) -> str:
        """Format a literal int."""
        return f"{val.value}"

    def format_for_range(self, r: L.ForRange) -> str:
        """Format a loop over a range."""
        begin = self.format(r.begin)
        end = self.format(r.end)
        index = self.format(r.index)
        output = f"for {index} in range({begin}, {end}):\n"
        b = self.format(r.body).split("\n")
        for line in b:
            output += f"    {line}\n"
        return output

    def format_statement(self, s: L.Statement) -> str:
        """Format a statement."""
        return self.format(s.expr)

    def format_assign(self, expr: L.Assign) -> str:
        """Format assignment."""
        rhs = self.format(expr.rhs)
        lhs = self.format(expr.lhs)
        return f"{lhs} {expr.op} {rhs}\n"

    def format_conditional(self, s: L.Conditional) -> str:
        """Format a conditional."""
        # Format children
        c = self.format(s.condition)
        t = self.format(s.true)
        f = self.format(s.false)

        # Apply parentheses
        if s.condition.precedence >= s.precedence:
            c = "(" + c + ")"
        if s.true.precedence >= s.precedence:
            t = "(" + t + ")"
        if s.false.precedence >= s.precedence:
            f = "(" + f + ")"

        # Return combined string
        return f"({t} if {c} else {f})"

    def format_symbol(self, s: L.Symbol) -> str:
        """Format a symbol."""
        return f"{s.name}"

    def format_mathfunction(self, f: L.MathFunction) -> str:
        """Format a math function."""
        function_map = {
            "ln": "log",
            "acos": "arccos",
            "asin": "arcsin",
            "atan": "arctan",
            "atan2": "arctan2",
            "acosh": "arccosh",
            "asinh": "arcsinh",
            "atanh": "arctanh",
        }
        function = function_map.get(f.function, f.function)
        args = [self.format(arg) for arg in f.args]
        if "bessel" in function:
            return "0"
        if function == "erf":
            return f"math.erf({args[0]})"
        argstr = ", ".join(args)
        return f"np.{function}({argstr})"

    impl = {
        "StatementList": format_statement_list,
        "Comment": format_comment,
        "Section": format_section,
        "ArrayDecl": format_array_decl,
        "ArrayAccess": format_array_access,
        "MultiIndex": format_multi_index,
        "VariableDecl": format_variable_decl,
        "ForRange": format_for_range,
        "Statement": format_statement,
        "Assign": format_assign,
        "AssignAdd": format_assign,
        "Product": format_nary_op,
        "Sum": format_nary_op,
        "Add": format_binary_op,
        "Sub": format_binary_op,
        "Mul": format_binary_op,
        "Div": format_binary_op,
        "Neg": format_neg,
        "Not": format_not,
        "LiteralFloat": format_literal_float,
        "LiteralInt": format_literal_int,
        "Symbol": format_symbol,
        "Conditional": format_conditional,
        "MathFunction": format_mathfunction,
        "And": format_andor,
        "Or": format_andor,
        "NE": format_binary_op,
        "EQ": format_binary_op,
        "GE": format_binary_op,
        "LE": format_binary_op,
        "GT": format_binary_op,
        "LT": format_binary_op,
    }

    def format(self, s: L.LNode) -> str:
        """Format output."""
        name = s.__class__.__name__
        try:
            return self.impl[name](self, s)  # type: ignore
        except KeyError:
            raise RuntimeError("Unknown statement: ", name)

1	# Copyright (C) 2025 Chris Richardson
2	#
3	# This file is part of FFCx. (https://www.fenicsproject.org)
4	#
5	# SPDX-License-Identifier: LGPL-3.0-or-later
6	"""Numba implementation for output."""
7
8	import ffcx.codegeneration.lnodes as L	1✔
9
10
11	def build_initializer_lists(values):	1✔
12	"""Build list of values."""
13	arr = "["	1✔
14	if len(values.shape) == 1:	1✔
15	return "[" + ", ".join(str(v) for v in values) + "]"	1✔
16	elif len(values.shape) > 1:	1✔
17	arr += ",\n".join(build_initializer_lists(v) for v in values)	1✔
18	arr += "]"	1✔
19	return arr	1✔
20
21
22	class Formatter:	1✔
23	"""Implementation for numba output backend."""
24
25	def __init__(self, scalar) -> None:	1✔
26	"""Initialise."""
27	self.scalar_type = scalar	1✔
28
29	def format_section(self, section: L.Section) -> str:	1✔
30	"""Format a section."""
31	# add new line before section
32	comments = "# ------------------------ \n"	1✔
33	comments += "# Section: " + section.name + "\n"	1✔
34	comments += "# Inputs: " + ", ".join(w.name for w in section.input) + "\n"	1✔
35	comments += "# Outputs: " + ", ".join(w.name for w in section.output) + "\n"	1✔
36	declarations = "".join(self.format(s) for s in section.declarations)	1✔
37
38	body = ""	1✔
39	if len(section.statements) > 0:	1✔
40	body = "".join(self.format(s) for s in section.statements)	1✔
41
42	body += "# ------------------------ \n"	1✔
43	return comments + declarations + body	1✔
44
45	def format_statement_list(self, slist: L.StatementList) -> str:	1✔
46	"""Format a list of statements."""
47	output = ""	1✔
48	for s in slist.statements:	1✔
49	output += self.format(s)	1✔
50	return output	1✔
51
52	def format_comment(self, c: L.Comment) -> str:	1✔
53	"""Format a comment."""
54	return "# " + c.comment + "\n"	1✔
55
56	def format_array_decl(self, arr: L.ArrayDecl) -> str:	1✔
57	"""Format an array declaration."""
58	if arr.symbol.dtype == L.DataType.SCALAR:	1✔
59	dtype = "A.dtype"	1✔
60	elif arr.symbol.dtype == L.DataType.REAL:	1✔
61	dtype = "coordinate_dofs.dtype"	1✔
NEW 62	elif arr.symbol.dtype == L.DataType.INT:	×
NEW 63	dtype = "np.int32"	×
64	symbol = self.format(arr.symbol)	1✔
65	if arr.values is None:	1✔
NEW 66	return f"{symbol} = np.empty({arr.sizes}, dtype={dtype})\n"	×
67	elif arr.values.size == 1:	1✔
68	return f"{symbol} = np.full({arr.sizes}, {arr.values[0]}, dtype={dtype})\n"	1✔
69	av = build_initializer_lists(arr.values)	1✔
70	av = "np.array(" + av + f", dtype={dtype})"	1✔
71	return f"{symbol} = {av}\n"	1✔
72
73	def format_array_access(self, arr: L.ArrayAccess) -> str:	1✔
74	"""Format array access."""
75	array = self.format(arr.array)	1✔
76	idx = ", ".join(self.format(ix) for ix in arr.indices)	1✔
77	return f"{array}[{idx}]"	1✔
78
79	def format_multi_index(self, index: L.MultiIndex) -> str:	1✔
80	"""Format a multi-index."""
81	return self.format(index.global_index)	1✔
82
83	def format_variable_decl(self, v: L.VariableDecl) -> str:	1✔
84	"""Format a variable declaration."""
85	sym = self.format(v.symbol)	1✔
86	val = self.format(v.value)	1✔
87	return f"{sym} = {val}\n"	1✔
88
89	def format_nary_op(self, oper: L.NaryOp) -> str:	1✔
90	"""Format a n argument operation."""
91	# Format children
92	args = [self.format(arg) for arg in oper.args]	1✔
93
94	# Apply parentheses
95	for i in range(len(args)):	1✔
96	if oper.args[i].precedence >= oper.precedence:	1✔
97	args[i] = "(" + args[i] + ")"	1✔
98
99	# Return combined string
100	return f" {oper.op} ".join(args)	1✔
101
102	def format_binary_op(self, oper: L.BinOp) -> str:	1✔
103	"""Format a binary operation."""
104	# Format children
105	lhs = self.format(oper.lhs)	1✔
106	rhs = self.format(oper.rhs)	1✔
107
108	# Apply parentheses
109	if oper.lhs.precedence >= oper.precedence:	1✔
110	lhs = f"({lhs})"	1✔
111	if oper.rhs.precedence >= oper.precedence:	1✔
112	rhs = f"({rhs})"	1✔
113
114	# Return combined string
115	return f"{lhs} {oper.op} {rhs}"	1✔
116
117	def format_neg(self, val: L.Neg) -> str:	1✔
118	"""Format unary negation."""
119	arg = self.format(val.arg)	1✔
120	return f"-{arg}"	1✔
121
122	def format_not(self, val: L.Not) -> str:	1✔
123	"""Format not operation."""
NEW 124	arg = self.format(val.arg)	×
NEW 125	return f"not({arg})"	×
126
127	def format_andor(self, oper: L.And \| L.Or) -> str:	1✔
128	"""Format and or or operation."""
129	# Format children
NEW 130	lhs = self.format(oper.lhs)	×
NEW 131	rhs = self.format(oper.rhs)	×
132
133	# Apply parentheses
NEW 134	if oper.lhs.precedence >= oper.precedence:	×
NEW 135	lhs = f"({lhs})"	×
NEW 136	if oper.rhs.precedence >= oper.precedence:	×
NEW 137	rhs = f"({rhs})"	×
138
NEW 139	opstr = {"\|\|": "or", "&&": "and"}[oper.op]	×
140
141	# Return combined string
NEW 142	return f"{lhs} {opstr} {rhs}"	×
143
144	def format_literal_float(self, val: L.LiteralFloat) -> str:	1✔
145	"""Format a literal float."""
146	return f"{val.value}"	1✔
147
148	def format_literal_int(self, val: L.LiteralInt) -> str:	1✔
149	"""Format a literal int."""
150	return f"{val.value}"	1✔
151
152	def format_for_range(self, r: L.ForRange) -> str:	1✔
153	"""Format a loop over a range."""
154	begin = self.format(r.begin)	1✔
155	end = self.format(r.end)	1✔
156	index = self.format(r.index)	1✔
157	output = f"for {index} in range({begin}, {end}):\n"	1✔
158	b = self.format(r.body).split("\n")	1✔
159	for line in b:	1✔
160	output += f" {line}\n"	1✔
161	return output	1✔
162
163	def format_statement(self, s: L.Statement) -> str:	1✔
164	"""Format a statement."""
165	return self.format(s.expr)	1✔
166
167	def format_assign(self, expr: L.Assign) -> str:	1✔
168	"""Format assignment."""
169	rhs = self.format(expr.rhs)	1✔
170	lhs = self.format(expr.lhs)	1✔
171	return f"{lhs} {expr.op} {rhs}\n"	1✔
172
173	def format_conditional(self, s: L.Conditional) -> str:	1✔
174	"""Format a conditional."""
175	# Format children
NEW 176	c = self.format(s.condition)	×
NEW 177	t = self.format(s.true)	×
NEW 178	f = self.format(s.false)	×
179
180	# Apply parentheses
NEW 181	if s.condition.precedence >= s.precedence:	×
NEW 182	c = "(" + c + ")"	×
NEW 183	if s.true.precedence >= s.precedence:	×
NEW 184	t = "(" + t + ")"	×
NEW 185	if s.false.precedence >= s.precedence:	×
NEW 186	f = "(" + f + ")"	×
187
188	# Return combined string
NEW 189	return f"({t} if {c} else {f})"	×
190
191	def format_symbol(self, s: L.Symbol) -> str:	1✔
192	"""Format a symbol."""
193	return f"{s.name}"	1✔
194
195	def format_mathfunction(self, f: L.MathFunction) -> str:	1✔
196	"""Format a math function."""
197	function_map = {	1✔
198	"ln": "log",
199	"acos": "arccos",
200	"asin": "arcsin",
201	"atan": "arctan",
202	"atan2": "arctan2",
203	"acosh": "arccosh",
204	"asinh": "arcsinh",
205	"atanh": "arctanh",
206	}
207	function = function_map.get(f.function, f.function)	1✔
208	args = [self.format(arg) for arg in f.args]	1✔
209	if "bessel" in function:	1✔
NEW 210	return "0"	×
211	if function == "erf":	1✔
NEW 212	return f"math.erf({args[0]})"	×
213	argstr = ", ".join(args)	1✔
214	return f"np.{function}({argstr})"	1✔
215
216	impl = {	1✔
217	"StatementList": format_statement_list,
218	"Comment": format_comment,
219	"Section": format_section,
220	"ArrayDecl": format_array_decl,
221	"ArrayAccess": format_array_access,
222	"MultiIndex": format_multi_index,
223	"VariableDecl": format_variable_decl,
224	"ForRange": format_for_range,
225	"Statement": format_statement,
226	"Assign": format_assign,
227	"AssignAdd": format_assign,
228	"Product": format_nary_op,
229	"Sum": format_nary_op,
230	"Add": format_binary_op,
231	"Sub": format_binary_op,
232	"Mul": format_binary_op,
233	"Div": format_binary_op,
234	"Neg": format_neg,
235	"Not": format_not,
236	"LiteralFloat": format_literal_float,
237	"LiteralInt": format_literal_int,
238	"Symbol": format_symbol,
239	"Conditional": format_conditional,
240	"MathFunction": format_mathfunction,
241	"And": format_andor,
242	"Or": format_andor,
243	"NE": format_binary_op,
244	"EQ": format_binary_op,
245	"GE": format_binary_op,
246	"LE": format_binary_op,
247	"GT": format_binary_op,
248	"LT": format_binary_op,
249	}
250
251	def format(self, s: L.LNode) -> str:	1✔
252	"""Format output."""
253	name = s.__class__.__name__	1✔
254	try:	1✔
255	return self.impl[name](self, s) # type: ignore	1✔
NEW 256	except KeyError:	×
NEW 257	raise RuntimeError("Unknown statement: ", name)	×

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