ackandClaude Fable 5.1
760fda5470
Assembled from klammertext-dev ed13dfaa5b7a. kpy/klammertext.cpp is a CPython extension module giving a Python script an instance of the Machine class -- ktext in-process, set up through the same functions the command uses. Errors map one-to-one to Python exceptions under the C++ names; an @eval's Python exception is chained as __cause__. Built by make -C mac, found through PYTHONPATH (env/runtime.env sets it), tested by tst/kpy_test.sh. Three engine changes came with it: Error::message(), set_command_state(), and the @eval error report carrying its traceback. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Uv7KWxafinDPraswEf4GsC
102 lines
3.3 KiB
C++
102 lines
3.3 KiB
C++
#pragma once
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#include <string>
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#include "locator.h"
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inline std::string command_name { "Command executed on the command line" };
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inline std::string command_pathname { "Pathname of command executed on the command line" };
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class Error : std::exception {
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public:
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Error(const std::string& error_type, const std::string& description,
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const Locator& locator = Locator())
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: m_type(error_type)
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, m_desc(description)
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, m_loc(locator)
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{}
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// The report text as the commands print it -- the header naming the
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// command and the error kind, the location when there is one, and the
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// description justified to 80 columns -- WITHOUT colour or the
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// surrounding newlines. print_message() writes exactly this to stderr;
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// the Python binding (kpy/) makes it the exception's str(), which is
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// why the two are one function: an error reads the same from a script
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// as from ktext. const: the former print_message mutated m_desc.
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std::string message(const std::string& epilog="") const;
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void print_message(const std::string& epilog="");
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std::string m_type {};
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std::string m_desc {};
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Locator m_loc; // {};
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};
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class Parsing_error : public Error {
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public:
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explicit Parsing_error(
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const std::string& description, const Locator& locator=Locator())
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: Error("parsing", description, locator) {};
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};
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class File_error : public Error {
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public:
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explicit File_error(
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const std::string& description, const Locator& locator=Locator())
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: Error("file", description, locator) {};
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};
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class Target_error : public Error {
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public:
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explicit Target_error(
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const std::string& description, const Locator& locator=Locator())
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: Error("target", description, locator) {};
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};
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class Klammerset_error : public Error {
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public:
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explicit Klammerset_error(
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const std::string& description, const Locator& locator=Locator())
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: Error("klammerset", description, locator) {};
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};
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class Definition_error : public Error {
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public:
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explicit Definition_error(
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const std::string& description, const Locator& locator=Locator())
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: Error("definition", description, locator) {};
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};
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class Argument_error : public Error {
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public:
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explicit Argument_error(
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const std::string& description, const Locator& locator=Locator())
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: Error("argument", description, locator) {};
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};
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class Environment_error : public Error {
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public:
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explicit Environment_error(
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const std::string& description, const Locator& locator=Locator())
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: Error("environment", description, locator) {};
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};
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// Klammer application nested deeper than the engine's limit. Raised by the
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// depth guard in Machine::apply_klammer(); without it a klammer that applies
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// itself (directly or through a cycle) exhausts the C++ stack and the process
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// dies with SIGSEGV and no diagnostic at all.
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class Recursion_error : public Error {
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public:
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explicit Recursion_error(
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const std::string& description, const Locator& locator=Locator())
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: Error("recursion", description, locator) {};
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};
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class Internal_error : public Error {
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public:
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explicit Internal_error(
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const std::string& description, const Locator& locator=Locator())
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: Error("internal", description, locator) {};
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};
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