示例#1
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func (cp *compiler) literal(n *parse.Primary, msg string) string {
	switch n.Type {
	case parse.Bareword, parse.SingleQuoted, parse.DoubleQuoted:
		return n.Value
	default:
		cp.errorf(n.Begin(), msg)
		return "" // not reached
	}
}
示例#2
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func (cp *compiler) primary(n *parse.Primary) valuesOp {
	switch n.Type {
	case parse.Bareword, parse.SingleQuoted, parse.DoubleQuoted:
		return literalStr(n.Value)
	case parse.Variable:
		qname := n.Value[1:]
		if !cp.registerVariableGet(qname) {
			cp.errorf(n.Begin(), "variable %s not found", n.Value)
		}
		return variable(qname, n.Begin())
	// case parse.Wildcard:
	case parse.ErrorCapture:
		op := cp.chunk(n.Chunk)
		return func(ec *evalCtx) []Value {
			return []Value{Error{ec.peval(op)}}
		}
	case parse.OutputCapture:
		return cp.outputCapture(n)
	case parse.List:
		op := cp.array(n.List)
		return func(ec *evalCtx) []Value {
			return []Value{NewList(op(ec)...)}
		}
	case parse.Lambda:
		return cp.lambda(n)
	case parse.Map:
		return cp.map_(n)
	case parse.Braced:
		return cp.braced(n)
	default:
		// XXX: Primary types not yet implemented are just treated as
		// barewords. Should report parser bug of bad PrimaryType after they
		// have been implemented.
		return literalStr(n.SourceText())
		// panic("bad PrimaryType; parser bug")
	}
}
示例#3
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func (cp *compiler) primary(n *parse.Primary) ValuesOp {
	switch n.Type {
	case parse.Bareword, parse.SingleQuoted, parse.DoubleQuoted:
		return literalStr(n.Value)
	case parse.Variable:
		qname := n.Value
		if !cp.registerVariableGet(qname) {
			cp.errorf(n.Begin(), "variable %s not found", n.Value)
		}
		return variable(qname, n.Begin())
	case parse.Wildcard:
		vs := []Value{GlobPattern{[]glob.Segment{
			wildcardToSegment(n.SourceText())}}}
		return func(ec *EvalCtx) []Value {
			return vs
		}
	case parse.Tilde:
		cp.errorf(n.Begin(), "compiler bug: Tilde not handled in .compound")
		return literalStr("~")
	case parse.ErrorCapture:
		op := cp.chunk(n.Chunk)
		return func(ec *EvalCtx) []Value {
			return []Value{Error{ec.PEval(op)}}
		}
	case parse.OutputCapture:
		return cp.outputCapture(n)
	case parse.List:
		op := cp.array(n.List)
		return func(ec *EvalCtx) []Value {
			return []Value{NewList(op(ec)...)}
		}
	case parse.Lambda:
		return cp.lambda(n)
	case parse.Map:
		return cp.map_(n)
	case parse.Braced:
		return cp.braced(n)
	default:
		cp.errorf(n.Begin(), "bad PrimaryType; parser bug")
		return literalStr(n.SourceText())
	}
}
示例#4
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func (cp *compiler) bracedOp(n *parse.Primary) ValuesOp {
	return ValuesOp{cp.braced(n), n.Begin(), n.End()}
}
示例#5
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func (cp *compiler) map_Op(n *parse.Primary) ValuesOp {
	return ValuesOp{cp.map_(n), n.Begin(), n.End()}
}
示例#6
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func (cp *compiler) lambdaOp(n *parse.Primary) ValuesOp {
	return ValuesOp{cp.lambda(n), n.Begin(), n.End()}
}
示例#7
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func (cp *compiler) outputCaptureOp(n *parse.Primary) ValuesOp {
	return ValuesOp{cp.outputCapture(n), n.Begin(), n.End()}
}
示例#8
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func (cp *compiler) primaryOp(n *parse.Primary) ValuesOp {
	return ValuesOp{cp.primary(n), n.Begin(), n.End()}
}