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-rw-r--r--utils/ipc/mojo/public/tools/mojom/mojom/parse/parser.py108
1 files changed, 65 insertions, 43 deletions
diff --git a/utils/ipc/mojo/public/tools/mojom/mojom/parse/parser.py b/utils/ipc/mojo/public/tools/mojom/mojom/parse/parser.py
index b3b803d6..1dffd98b 100644
--- a/utils/ipc/mojo/public/tools/mojom/mojom/parse/parser.py
+++ b/utils/ipc/mojo/public/tools/mojom/mojom/parse/parser.py
@@ -1,8 +1,11 @@
-# Copyright 2014 The Chromium Authors. All rights reserved.
+# Copyright 2014 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Generates a syntax tree from a Mojo IDL file."""
+# Breaking parser stanzas is unhelpful so allow longer lines.
+# pylint: disable=line-too-long
+
import os.path
import sys
@@ -33,7 +36,7 @@ class ParseError(Error):
# We have methods which look like they could be functions:
# pylint: disable=R0201
-class Parser(object):
+class Parser:
def __init__(self, lexer, source, filename):
self.tokens = lexer.tokens
self.source = source
@@ -111,7 +114,8 @@ class Parser(object):
| union
| interface
| enum
- | const"""
+ | const
+ | feature"""
p[0] = p[1]
def p_attribute_section_1(self, p):
@@ -140,12 +144,19 @@ class Parser(object):
p[0].Append(p[3])
def p_attribute_1(self, p):
- """attribute : NAME EQUALS evaled_literal
- | NAME EQUALS NAME"""
- p[0] = ast.Attribute(p[1], p[3], filename=self.filename, lineno=p.lineno(1))
+ """attribute : name_wrapped EQUALS identifier_wrapped"""
+ p[0] = ast.Attribute(p[1],
+ p[3][1],
+ filename=self.filename,
+ lineno=p.lineno(1))
def p_attribute_2(self, p):
- """attribute : NAME"""
+ """attribute : name_wrapped EQUALS evaled_literal
+ | name_wrapped EQUALS name_wrapped"""
+ p[0] = ast.Attribute(p[1], p[3], filename=self.filename, lineno=p.lineno(1))
+
+ def p_attribute_3(self, p):
+ """attribute : name_wrapped"""
p[0] = ast.Attribute(p[1], True, filename=self.filename, lineno=p.lineno(1))
def p_evaled_literal(self, p):
@@ -161,11 +172,11 @@ class Parser(object):
p[0] = eval(p[1])
def p_struct_1(self, p):
- """struct : attribute_section STRUCT NAME LBRACE struct_body RBRACE SEMI"""
+ """struct : attribute_section STRUCT name_wrapped LBRACE struct_body RBRACE SEMI"""
p[0] = ast.Struct(p[3], p[1], p[5])
def p_struct_2(self, p):
- """struct : attribute_section STRUCT NAME SEMI"""
+ """struct : attribute_section STRUCT name_wrapped SEMI"""
p[0] = ast.Struct(p[3], p[1], None)
def p_struct_body_1(self, p):
@@ -180,11 +191,24 @@ class Parser(object):
p[0].Append(p[2])
def p_struct_field(self, p):
- """struct_field : attribute_section typename NAME ordinal default SEMI"""
+ """struct_field : attribute_section typename name_wrapped ordinal default SEMI"""
p[0] = ast.StructField(p[3], p[1], p[4], p[2], p[5])
+ def p_feature(self, p):
+ """feature : attribute_section FEATURE NAME LBRACE feature_body RBRACE SEMI"""
+ p[0] = ast.Feature(p[3], p[1], p[5])
+
+ def p_feature_body_1(self, p):
+ """feature_body : """
+ p[0] = ast.FeatureBody()
+
+ def p_feature_body_2(self, p):
+ """feature_body : feature_body const"""
+ p[0] = p[1]
+ p[0].Append(p[2])
+
def p_union(self, p):
- """union : attribute_section UNION NAME LBRACE union_body RBRACE SEMI"""
+ """union : attribute_section UNION name_wrapped LBRACE union_body RBRACE SEMI"""
p[0] = ast.Union(p[3], p[1], p[5])
def p_union_body_1(self, p):
@@ -197,7 +221,7 @@ class Parser(object):
p[1].Append(p[2])
def p_union_field(self, p):
- """union_field : attribute_section typename NAME ordinal SEMI"""
+ """union_field : attribute_section typename name_wrapped ordinal SEMI"""
p[0] = ast.UnionField(p[3], p[1], p[4], p[2])
def p_default_1(self, p):
@@ -209,8 +233,7 @@ class Parser(object):
p[0] = p[2]
def p_interface(self, p):
- """interface : attribute_section INTERFACE NAME LBRACE interface_body \
- RBRACE SEMI"""
+ """interface : attribute_section INTERFACE name_wrapped LBRACE interface_body RBRACE SEMI"""
p[0] = ast.Interface(p[3], p[1], p[5])
def p_interface_body_1(self, p):
@@ -233,8 +256,7 @@ class Parser(object):
p[0] = p[3]
def p_method(self, p):
- """method : attribute_section NAME ordinal LPAREN parameter_list RPAREN \
- response SEMI"""
+ """method : attribute_section name_wrapped ordinal LPAREN parameter_list RPAREN response SEMI"""
p[0] = ast.Method(p[2], p[1], p[3], p[5], p[7])
def p_parameter_list_1(self, p):
@@ -255,7 +277,7 @@ class Parser(object):
p[0].Append(p[3])
def p_parameter(self, p):
- """parameter : attribute_section typename NAME ordinal"""
+ """parameter : attribute_section typename name_wrapped ordinal"""
p[0] = ast.Parameter(
p[3], p[1], p[4], p[2], filename=self.filename, lineno=p.lineno(3))
@@ -271,8 +293,7 @@ class Parser(object):
"""nonnullable_typename : basictypename
| array
| fixed_array
- | associative_array
- | interfacerequest"""
+ | associative_array"""
p[0] = p[1]
def p_basictypename(self, p):
@@ -297,18 +318,16 @@ class Parser(object):
p[0] = "rcv<%s>" % p[3]
def p_associatedremotetype(self, p):
- """associatedremotetype : PENDING_ASSOCIATED_REMOTE LANGLE identifier \
- RANGLE"""
+ """associatedremotetype : PENDING_ASSOCIATED_REMOTE LANGLE identifier RANGLE"""
p[0] = "rma<%s>" % p[3]
def p_associatedreceivertype(self, p):
- """associatedreceivertype : PENDING_ASSOCIATED_RECEIVER LANGLE identifier \
- RANGLE"""
+ """associatedreceivertype : PENDING_ASSOCIATED_RECEIVER LANGLE identifier RANGLE"""
p[0] = "rca<%s>" % p[3]
def p_handletype(self, p):
"""handletype : HANDLE
- | HANDLE LANGLE NAME RANGLE"""
+ | HANDLE LANGLE name_wrapped RANGLE"""
if len(p) == 2:
p[0] = p[1]
else:
@@ -342,14 +361,6 @@ class Parser(object):
"""associative_array : MAP LANGLE identifier COMMA typename RANGLE"""
p[0] = p[5] + "{" + p[3] + "}"
- def p_interfacerequest(self, p):
- """interfacerequest : identifier AMP
- | ASSOCIATED identifier AMP"""
- if len(p) == 3:
- p[0] = p[1] + "&"
- else:
- p[0] = "asso<" + p[2] + "&>"
-
def p_ordinal_1(self, p):
"""ordinal : """
p[0] = None
@@ -366,15 +377,14 @@ class Parser(object):
p[0] = ast.Ordinal(value, filename=self.filename, lineno=p.lineno(1))
def p_enum_1(self, p):
- """enum : attribute_section ENUM NAME LBRACE enum_value_list \
- RBRACE SEMI
- | attribute_section ENUM NAME LBRACE nonempty_enum_value_list \
- COMMA RBRACE SEMI"""
+ """enum : attribute_section ENUM name_wrapped LBRACE enum_value_list RBRACE SEMI
+ | attribute_section ENUM name_wrapped LBRACE \
+ nonempty_enum_value_list COMMA RBRACE SEMI"""
p[0] = ast.Enum(
p[3], p[1], p[5], filename=self.filename, lineno=p.lineno(2))
def p_enum_2(self, p):
- """enum : attribute_section ENUM NAME SEMI"""
+ """enum : attribute_section ENUM name_wrapped SEMI"""
p[0] = ast.Enum(
p[3], p[1], None, filename=self.filename, lineno=p.lineno(2))
@@ -396,9 +406,9 @@ class Parser(object):
p[0].Append(p[3])
def p_enum_value(self, p):
- """enum_value : attribute_section NAME
- | attribute_section NAME EQUALS int
- | attribute_section NAME EQUALS identifier_wrapped"""
+ """enum_value : attribute_section name_wrapped
+ | attribute_section name_wrapped EQUALS int
+ | attribute_section name_wrapped EQUALS identifier_wrapped"""
p[0] = ast.EnumValue(
p[2],
p[1],
@@ -407,7 +417,7 @@ class Parser(object):
lineno=p.lineno(2))
def p_const(self, p):
- """const : attribute_section CONST typename NAME EQUALS constant SEMI"""
+ """const : attribute_section CONST typename name_wrapped EQUALS constant SEMI"""
p[0] = ast.Const(p[4], p[1], p[3], p[6])
def p_constant(self, p):
@@ -422,10 +432,16 @@ class Parser(object):
# TODO(vtl): Make this produce a "wrapped" identifier (probably as an
# |ast.Identifier|, to be added) and get rid of identifier_wrapped.
def p_identifier(self, p):
- """identifier : NAME
- | NAME DOT identifier"""
+ """identifier : name_wrapped
+ | name_wrapped DOT identifier"""
p[0] = ''.join(p[1:])
+ # Allow 'feature' to be a name literal not just a keyword.
+ def p_name_wrapped(self, p):
+ """name_wrapped : NAME
+ | FEATURE"""
+ p[0] = p[1]
+
def p_literal(self, p):
"""literal : int
| float
@@ -458,6 +474,12 @@ class Parser(object):
# TODO(vtl): Can we figure out what's missing?
raise ParseError(self.filename, "Unexpected end of file")
+ if e.value == 'feature':
+ raise ParseError(self.filename,
+ "`feature` is reserved for a future mojom keyword",
+ lineno=e.lineno,
+ snippet=self._GetSnippet(e.lineno))
+
raise ParseError(
self.filename,
"Unexpected %r:" % e.value,
generated by cgit v1.2.1 (git 2.18.0) at 2024-05-06 19:44:00 +0000