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zclsyntax: handle case where functions are not allowed

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Previously this would panic.
This commit is contained in:
Martin Atkins 2017-06-05 07:31:09 -07:00
parent bca573d3d0
commit 0266334560
1 changed files with 12 additions and 0 deletions
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12
zcl/zclsyntax/expression.go
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@ -114,6 +114,18 @@ func (e *FunctionCallExpr) walkChildNodes(w internalWalkFunc) {
func (e *FunctionCallExpr) Value(ctx *zcl.EvalContext) (cty.Value, zcl.Diagnostics) {
var diags zcl.Diagnostics
if ctx == nil || ctx.Functions == nil {
return cty.DynamicVal, zcl.Diagnostics{
{
Severity: zcl.DiagError,
Summary: "Function calls not allowed",
Detail: "Functions may not be called here.",
Subject: &e.NameRange,
Context: e.Range().Ptr(),
},
}
}
f, exists := ctx.Functions[e.Name]
if !exists {
avail := make([]string, 0, len(ctx.Functions))