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13 lines
779 B
C
13 lines
779 B
C
#ifndef CONTEXT_FLAGS_H
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#define CONTEXT_FLAGS_H
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// The grammar permits certain statements which are syntactically invalid, (a) because it's awkward to handle
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// there, and (b) because we get far better control over error messages here (vs. 'syntax error').
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// The following flags are used as the CST is built from the AST for CST-build-time validation.
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#define IN_BINDABLE 0x0100 // boundvars are only OK inside a bindable, e.g. (recursively) inside a for-loop
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#define IN_BREAKABLE 0x0200 // break/continue are only OK (recursively) inside for/while/do-while
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#define IN_BEGIN_OR_END 0x0400 // $stuff is not OK (recursively) inside begin/end
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#define IN_MLR_FILTER 0x0800 // mlr filter takes only a single boolean; no @-vars; no looping; etc.
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#endif // CONTEXT_FLAGS_H
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