sourceafEfan::EfanErr.fan

using afPlastic::SrcCodeErr
using afPlastic::SrcCodeSnippet

** As thrown by Efan.
const class EfanErr : Err {
    new make(Str msg := "", Err? cause := null) : super(msg, cause) {}
}

** Thrown when the efan template can not be parsed.
const class EfanParserErr : EfanErr, SrcCodeErr {
    const override SrcCodeSnippet   srcCode
    const override Int              errLineNo
    private const  Int              linesOfPadding

    internal new make(SrcCodeSnippet srcCode, Int errLineNo, Str errMsg, Int linesOfPadding) : super(errMsg) {
        this.srcCode = srcCode
        this.errLineNo = errLineNo
        this.linesOfPadding = linesOfPadding
    }
    
    override Str toStr() {
        print(msg, linesOfPadding)
    }
}

** Thrown when the generated efan code can not be compiled.
const class EfanCompilationErr : EfanErr, SrcCodeErr {
    const override SrcCodeSnippet   srcCode
    const override Int              errLineNo
    private const  Int              linesOfPadding

    internal new make(SrcCodeSnippet srcCode, Int errLineNo, Str errMsg, Int linesOfPadding, Err cause) : super(errMsg, cause) {
        this.srcCode = srcCode
        this.errLineNo = errLineNo
        this.linesOfPadding = linesOfPadding
    }
    
    override Str toStr() {
        print(msg, linesOfPadding)
    }
}

** Wraps any Errs thrown when rendering from an `EfanRenderer` instance. 
const class EfanRuntimeErr : EfanErr, SrcCodeErr {
    const override SrcCodeSnippet   srcCode
    const override Int              errLineNo
    private const  Int              linesOfPadding

    internal new make(SrcCodeSnippet srcCode, Int errLineNo, Str errMsg, Int linesOfPadding, Err cause) : super(errMsg, cause) {
        this.srcCode = srcCode
        this.errLineNo = errLineNo
        this.linesOfPadding = linesOfPadding
    }
    
    override Str toStr() {
        print(msg, linesOfPadding)
    }
}