5f4e6a86d5
This PR updates the formatting of, and adds explanations for, "unknown identifier" errors as well as "failed to infer type" errors for binders and definitions. It attempts to ameliorate some of the confusion encountered in #1592 by modifying the wording of the "header is elaborated before body is processed" note and adding further discussion and examples of this behavior in the corresponding error explanation.
27 lines
829 B
Text
27 lines
829 B
Text
macroStack.lean:4:5-4:6: error(lean.unknownIdentifier): Unknown identifier `x`
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macroStack.lean:8:6-8:7: error: Unknown identifier `x`
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with resulting expansion
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binrel% GT.gt✝ x 0
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while expanding
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x > 0
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while expanding
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(x > 0)
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while expanding
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if h : (x > 0) then 1 else 0
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macroStack.lean:11:9-11:15: error: invalid use of `(<- ...)`, must be nested inside a 'do' expression
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macroStack.lean:17:0-17:6: error: failed to synthesize
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HAdd Nat String ?m
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Hint: Additional diagnostic information may be available using the `set_option diagnostics true` command.
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with resulting expansion
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binop% HAdd.hAdd✝ (x + x✝) x✝¹
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while expanding
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(x + x✝) + x✝¹
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while expanding
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foo!(x + x✝)
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while expanding
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foo!(x + x✝) < 1
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while expanding
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if foo!(x + x✝) < 1 then true✝ else false✝
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while expanding
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bla! x
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