mirror of
https://develop.openfoam.com/Development/openfoam.git
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e6697edb52
- previously simply reused the scan token, which works fine for
non-nested tokenizations but becomes too fragile with nesting.
Now changed to use tagged unions that can be copied about
and still retain some rudimentary knowledge of their types,
which can be manually triggered with a destroy() call.
- provide an 'identifier' non-terminal as an additional catch
to avoid potential leakage on parsing failure.
- adjust lemon rules and infrastructure:
- use %token to predefine standard tokens.
Will reduce some noise on the generated headers by retaining the
order on the initial token names.
- Define BIT_NOT, internal token rename NOT -> LNOT
- handle non-terminal vector values.
Support vector::x, vector::y and vector::z constants
- permit fieldExpr access to time().
Probably not usable or useful for an '#eval' expression,
but useful for a Function1.
- provisioning for hooks into function calls. Establishes token
names for next commit(s).
83 lines
2.3 KiB
Plaintext
83 lines
2.3 KiB
Plaintext
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#-----------------------------------*- m4 -*-----------------------------------
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# ========= |
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# \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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# \\ / O peration |
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# \\ / A nd | www.openfoam.com
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# \\/ M anipulation |
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#------------------------------------------------------------------------------
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# Copyright (C) 2019 OpenCFD Ltd.
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#------------------------------------------------------------------------------
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# License
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# This file is part of OpenFOAM, distributed under GPL-3.0-or-later.
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#
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# Description
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# Various "boilerplate" parser methods (C++)
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#
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# Requires
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# IOmanip.H
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#------------------------------------------------------------------------------
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#------------------------------------------------------------------------------
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# parser_code_static_methods(clsName)
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#
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# Description
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# Emit common parser static methods
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# `tokenName`
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# `printTokenNames`
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# `printRules`
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#
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# Note
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# Array access uses `*(array + i)` to avoid [] square brackets,
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# which may be used for m4 quoting, unless we switched back to `' !!
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#
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# Example
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# parser_code_static_methods(Foam::expressions::fieldExpr::parser)
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#
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#------------------------------------------------------------------------------
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define([parser_code_static_methods],
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[dnl
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Foam::word $1::tokenName(int i)
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{
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#ifndef NDEBUG
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if (i > 0 && unsigned(i) < (sizeof(yyTokenName) / sizeof(char*)))
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{
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return *(yyTokenName + i);
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}
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return "<invalid>";
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#else
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return "";
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#endif
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}
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void $1::printTokenNames(Ostream& os)
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{
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#ifndef NDEBUG
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const unsigned nElem(sizeof(yyTokenName) / sizeof(char*));
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for (unsigned i = 1; i < nElem; ++i) // start = 1 (skip termination token)
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{
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os << *(yyTokenName + i) << nl;
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}
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#endif
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}
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void $1::printRules(Ostream& os)
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{
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#ifndef NDEBUG
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const unsigned nElem(sizeof(yyRuleName) / sizeof(char*));
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// Easy way to count number of digits
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const unsigned width(std::to_string(nElem).length());
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for (unsigned i = 0; i < nElem; ++i)
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{
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os << setw(width) << i << ": " << *(yyRuleName + i) << nl;
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}
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#endif
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}]
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)
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#------------------------------------------------------------------------------
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divert(0)dnl
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