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-rw-r--r--tools/snippets_translate/converter.py101
1 files changed, 66 insertions, 35 deletions
diff --git a/tools/snippets_translate/converter.py b/tools/snippets_translate/converter.py
index 77250a857..92c89bdf6 100644
--- a/tools/snippets_translate/converter.py
+++ b/tools/snippets_translate/converter.py
@@ -50,6 +50,31 @@ from handlers import (handle_array_declarations, handle_casts, handle_class,
from parse_utils import dstrip, get_indent, remove_ref
+VOID_METHOD_PATTERN = re.compile(r"^ *void *[\w\_]+(::)?[\w\d\_]+\(")
+QT_QUALIFIER_PATTERN = re.compile(r"Q[\w]+::")
+TERNARY_OPERATOR_PATTERN = re.compile(r"^.* \? .+ : .+$")
+COUT_PATTERN = re.compile("^ *(std::)?cout")
+FOR_PATTERN = re.compile(r"^ *for *\(")
+FOREACH_PATTERN = re.compile(r"^ *foreach *\(")
+ELSE_PATTERN = re.compile(r"^ *}? *else *{?")
+ELSE_REPLACEMENT_PATTERN = re.compile(r"}? *else *{?")
+CLASS_PATTERN = re.compile(r"^ *class ")
+STRUCT_PATTERN = re.compile(r"^ *struct ")
+DELETE_PATTERN = re.compile(r"^ *delete ")
+PUBLIC_PATTERN = re.compile(r"^public:$")
+PRIVATE_PATTERN = re.compile(r"^private:$")
+VAR1_PATTERN = re.compile(r"^[a-zA-Z0-9]+(<.*?>)? [\w\*\&]+(\(.*?\))? ?(?!.*=|:).*$")
+VAR2_PATTERN = re.compile(r"^[a-zA-Z0-9]+(<.*?>)? [\w]+::[\w\*\&]+\(.*\)$")
+VAR3_PATTERN = re.compile(r"^[a-zA-Z0-9]+(<.*?>)? [\w\*]+ *= *[\w\.\"\']*(\(.*?\))?")
+VAR4_PATTERN = re.compile(r"\w+ = [A-Z]{1}\w+")
+CONSTRUCTOR_PATTERN = re.compile(r"^ *\w+::\w+\(.*?\)")
+ARRAY_VAR_PATTERN = re.compile(r"^[a-zA-Z0-9]+(<.*?>)? [\w\*]+\[?\]? * =? *\{")
+RETURN_TYPE_PATTERN = re.compile(r"^[a-zA-Z0-9]+(<.*?>)? [\w]+::[\w\*\&]+\(.*\)$")
+FUNCTION_PATTERN = re.compile(r"^[a-zA-Z0-9]+(<.*?>)? [\w\*\&]+\(.*\)$")
+ITERATOR_PATTERN = re.compile(r"(std::)?[\w]+<[\w]+>::(const_)?iterator")
+SCOPE_PATTERN = re.compile(r"[\w]+::")
+
+
def snippet_translate(x):
## Cases which are not C++
@@ -64,15 +89,16 @@ def snippet_translate(x):
x = x[:-1]
# Remove lines with only '{' or '}'
- if x.strip() == "{" or x.strip() == "}":
+ xs = x.strip()
+ if xs == "{" or xs == "}":
return ""
# Skip lines with the snippet related identifier '//!'
- if x.strip().startswith("//!"):
+ if xs.startswith("//!"):
return x
# handle lines with only comments using '//'
- if x.lstrip().startswith("//"):
+ if xs.startswith("//"):
x = x.replace("//", "#", 1)
return x
@@ -144,11 +170,11 @@ def snippet_translate(x):
x = handle_keywords(x, "throw", "raise")
# handle 'void Class::method(...)' and 'void method(...)'
- if re.search(r"^ *void *[\w\_]+(::)?[\w\d\_]+\(", x):
+ if VOID_METHOD_PATTERN.search(x):
x = handle_void_functions(x)
# 'Q*::' -> 'Q*.'
- if re.search(r"Q[\w]+::", x):
+ if QT_QUALIFIER_PATTERN.search(x):
x = x.replace("::", ".")
# handle 'nullptr'
@@ -156,77 +182,79 @@ def snippet_translate(x):
x = x.replace("nullptr", "None")
## Special Cases Rules
-
+ xs = x.strip()
# Special case for 'main'
- if x.strip().startswith("int main("):
+ if xs.startswith("int main("):
return f'{get_indent(x)}if __name__ == "__main__":'
- if x.strip().startswith("QApplication app(argc, argv)"):
+ if xs.startswith("QApplication app(argc, argv)"):
return f"{get_indent(x)}app = QApplication([])"
# Special case for 'return app.exec()'
- if x.strip().startswith("return app.exec"):
+ if xs.startswith("return app.exec"):
return x.replace("return app.exec()", "sys.exit(app.exec())")
# Handle includes -> import
- if x.strip().startswith("#include"):
+ if xs.startswith("#include"):
x = handle_include(x)
return dstrip(x)
- if x.strip().startswith("emit "):
+ if xs.startswith("emit "):
x = handle_emit(x)
return dstrip(x)
# *_cast
if "_cast<" in x:
x = handle_casts(x)
+ xs = x.strip()
# Handle Qt classes that needs to be removed
x = handle_useless_qt_classes(x)
# Handling ternary operator
- if re.search(r"^.* \? .+ : .+$", x.strip()):
+ if TERNARY_OPERATOR_PATTERN.search(xs):
x = x.replace(" ? ", " if ")
x = x.replace(" : ", " else ")
+ xs = x.strip()
# Handle 'while', 'if', and 'else if'
# line might end in ')' or ") {"
- if x.strip().startswith(("while", "if", "else if", "} else if")):
+ if xs.startswith(("while", "if", "else if", "} else if")):
x = handle_conditions(x)
return dstrip(x)
- elif re.search("^ *}? *else *{?", x):
- x = re.sub(r"}? *else *{?", "else:", x)
+ elif ELSE_PATTERN.search(x):
+ x = ELSE_REPLACEMENT_PATTERN.sub("else:", x)
return dstrip(x)
# 'cout' and 'endl'
- if re.search("^ *(std::)?cout", x) or ("endl" in x) or x.lstrip().startswith("qDebug()"):
+ if COUT_PATTERN.search(x) or ("endl" in x) or xs.startswith("qDebug()"):
x = handle_cout_endl(x)
return dstrip(x)
# 'for' loops
- if re.search(r"^ *for *\(", x.strip()):
+ if FOR_PATTERN.search(xs):
return dstrip(handle_for(x))
# 'foreach' loops
- if re.search(r"^ *foreach *\(", x.strip()):
+ if FOREACH_PATTERN.search(xs):
return dstrip(handle_foreach(x))
# 'class' and 'structs'
- if re.search(r"^ *class ", x) or re.search(r"^ *struct ", x):
+ if CLASS_PATTERN.search(x) or STRUCT_PATTERN.search(x):
if "struct " in x:
x = x.replace("struct ", "class ")
return handle_class(x)
# 'delete'
- if re.search(r"^ *delete ", x):
+ if DELETE_PATTERN.search(x):
return x.replace("delete", "del")
# 'public:'
- if re.search(r"^public:$", x.strip()):
+ if PUBLIC_PATTERN.search(xs):
return x.replace("public:", "# public")
# 'private:'
- if re.search(r"^private:$", x.strip()):
+ if PRIVATE_PATTERN.search(xs):
return x.replace("private:", "# private")
# For expressions like: `Type var`
@@ -242,9 +270,9 @@ def snippet_translate(x):
# At the end we skip methods with the form:
# QStringView Message::body()
# to threat them as methods.
- if (re.search(r"^[a-zA-Z0-9]+(<.*?>)? [\w\*\&]+(\(.*?\))? ?(?!.*=|:).*$", x.strip())
- and x.strip().split()[0] not in ("def", "return", "and", "or")
- and not re.search(r"^[a-zA-Z0-9]+(<.*?>)? [\w]+::[\w\*\&]+\(.*\)$", x.strip())
+ if (VAR1_PATTERN.search(xs)
+ and xs.split()[0] not in ("def", "return", "and", "or")
+ and not VAR2_PATTERN.search(xs)
and ("{" not in x and "}" not in x)):
# FIXME: this 'if' is a hack for a function declaration with this form:
@@ -261,7 +289,7 @@ def snippet_translate(x):
# QSome thing = b(...)
# float v = 0.1
# QSome *thing = ...
- if (re.search(r"^[a-zA-Z0-9]+(<.*?>)? [\w\*]+ *= *[\w\.\"\']*(\(.*?\))?", x.strip())
+ if (VAR3_PATTERN.search(xs)
and ("{" not in x and "}" not in x)):
left, right = x.split("=", 1)
var_name = " ".join(left.strip().split()[1:])
@@ -272,23 +300,23 @@ def snippet_translate(x):
# layout = QVBoxLayout
# so we need to add '()' at the end if it's just a word
# with only alpha numeric content
- if re.search(r"\w+ = [A-Z]{1}\w+", x.strip()) and not x.strip().endswith(")"):
+ if VAR4_PATTERN.search(xs) and not xs.endswith(")"):
x = f"{x.rstrip()}()"
return dstrip(x)
# For constructors, that we now the shape is:
# ClassName::ClassName(...)
- if re.search(r"^ *\w+::\w+\(.*?\)", x.strip()):
+ if CONSTRUCTOR_PATTERN.search(xs):
x = handle_constructors(x)
return dstrip(x)
# For base object constructor:
# : QWidget(parent)
if (
- x.strip().startswith(": ")
+ xs.startswith(": ")
and ("<<" not in x)
and ("::" not in x)
- and not x.strip().endswith(";")
+ and not xs.endswith(";")
):
return handle_constructor_default_values(x)
@@ -297,27 +325,30 @@ def snippet_translate(x):
# type var_name[] = {...
# type var_name {...
# if re.search(r"^[a-zA-Z0-9]+(<.*?>)? [\w\*]+\[\] * = *\{", x.strip()):
- if re.search(r"^[a-zA-Z0-9]+(<.*?>)? [\w\*]+\[?\]? * =? *\{", x.strip()):
+ if ARRAY_VAR_PATTERN.search(xs):
x = handle_array_declarations(x)
+ xs = x.strip()
# Methods with return type
# int Class::method(...)
# QStringView Message::body()
- if re.search(r"^[a-zA-Z0-9]+(<.*?>)? [\w]+::[\w\*\&]+\(.*\)$", x.strip()):
+ if RETURN_TYPE_PATTERN.search(xs):
# We just need to capture the 'method name' and 'arguments'
x = handle_methods_return_type(x)
+ xs = x.strip()
# Handling functions
# By this section of the function, we cover all the other cases
# So we can safely assume it's not a variable declaration
- if re.search(r"^[a-zA-Z0-9]+(<.*?>)? [\w\*\&]+\(.*\)$", x.strip()):
+ if FUNCTION_PATTERN.search(xs):
x = handle_functions(x)
+ xs = x.strip()
# if it is a C++ iterator declaration, then ignore it due to dynamic typing in Python
# eg: std::vector<int> it;
# the case of iterator being used inside a for loop is already handed in handle_for(..)
# TODO: handle iterator initialization statement like it = container.begin();
- if re.search(r"(std::)?[\w]+<[\w]+>::(const_)?iterator", x):
+ if ITERATOR_PATTERN.search(x):
x = ""
return x
@@ -325,7 +356,7 @@ def snippet_translate(x):
# 'Namespace*::' -> 'Namespace*.'
# TODO: In the case where a C++ class function is defined outside the class, this would be wrong
# but we do not have such a code snippet yet
- if re.search(r"[\w]+::", x):
+ if SCOPE_PATTERN.search(x):
x = x.replace("::", ".")
# General return for no special cases
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-31 19:45:35 +0000