70 lines
1.4 KiB
ReStructuredText
70 lines
1.4 KiB
ReStructuredText
Command Line
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============
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Cling has its own command line, which looks like any other Unix shell. The
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emacs-like command line editor is what we call interactive command line or
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interactive shell.
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Once we start Cling it automatically includes several header files and its own
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runtime universe. Thus it creates the minimal environment for the user to start.
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Grammar
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-------
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Cling is capable to parse everything that `Clang <https://clang.llvm.org/>`_ can
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do. In addition, Cling can parse some interpreter-specific C++ extensions.
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Metaprocessor
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-------------
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Cling Metaprocessor provides convenient and easy to use interface for changing
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the interpreter’s internal state or for executing handy commands. Cling provides
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the following metaprocessor commands:
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**syntax: .(command)**, where command is:
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.. code:: bash
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x filename.cxx
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loads filename and calls void filename() if defined;
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.. code:: bash
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L library | filename.cxx
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loads library or filename.cxx;
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.. code:: bash
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printAST
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(DEBUG ONLY) shows the abstract syntax tree after each processed entity;
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.. code:: bash
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I path
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adds an include path;
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.. code:: bash
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.@
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Cancels the multiline input;
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.. code:: bash
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.dynamicExtensions
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Turns on cling's dynamic extensions. This in turn enables the dynamic lookup and
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the late resolving of the identifier. With that option cling tries to heal the
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compile-time failed lookups at runtime.
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