diff options
Diffstat (limited to 'hclwrite/ast_expression.go')
| -rw-r--r-- | hclwrite/ast_expression.go | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/hclwrite/ast_expression.go b/hclwrite/ast_expression.go index 854e716..073c308 100644 --- a/hclwrite/ast_expression.go +++ b/hclwrite/ast_expression.go @@ -21,6 +21,29 @@ func newExpression() *Expression { } } +// NewExpressionRaw constructs an expression containing the given raw tokens. +// +// There is no automatic validation that the given tokens produce a valid +// expression. Callers of thus function must take care to produce invalid +// expression tokens. Where possible, use the higher-level functions +// NewExpressionLiteral or NewExpressionAbsTraversal instead. +// +// Because NewExpressionRaw does not interpret the given tokens in any way, +// an expression created by NewExpressionRaw will produce an empty result +// for calls to its method Variables, even if the given token sequence +// contains a subslice that would normally be interpreted as a traversal under +// parsing. +func NewExpressionRaw(tokens Tokens) *Expression { + expr := newExpression() + // We copy the tokens here in order to make sure that later mutations + // by the caller don't inadvertently cause our expression to become + // invalid. + copyTokens := make(Tokens, len(tokens)) + copy(copyTokens, tokens) + expr.children.AppendUnstructuredTokens(copyTokens) + return expr +} + // NewExpressionLiteral constructs an an expression that represents the given // literal value. // |