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61 lines
1.3 KiB
Go
61 lines
1.3 KiB
Go
package parser
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import (
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"github.com/osteele/liquid/expressions"
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)
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// ASTNode is a node of an AST.
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type ASTNode interface {
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SourceLocation() SourceLoc
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SourceText() string
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}
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// ASTBlock represents a {% tag %}…{% endtag %}.
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type ASTBlock struct {
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Token
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syntax BlockSyntax
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Body []ASTNode // Body is the nodes before the first branch
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Clauses []*ASTBlock // E.g. else and elseif w/in an if
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}
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// ASTRaw holds the text between the start and end of a raw tag.
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type ASTRaw struct {
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Slices []string
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sourcelessNode
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}
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// ASTTag is a tag {% tag %} that is not a block start or end.
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type ASTTag struct {
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Token
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}
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// ASTText is a text span, that is rendered verbatim.
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type ASTText struct {
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Token
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}
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// ASTObject is an {{ object }} object.
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type ASTObject struct {
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Token
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Expr expressions.Expression
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}
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// ASTSeq is a sequence of nodes.
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type ASTSeq struct {
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Children []ASTNode
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sourcelessNode
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}
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// It shouldn't be possible to get an error from one of these node types.
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// If it is, this needs to be re-thought to figure out where the source
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// location comes from.
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type sourcelessNode struct{}
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func (n *sourcelessNode) SourceLocation() SourceLoc {
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panic("unexpected call on sourceless node")
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}
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func (n *sourcelessNode) SourceText() string {
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panic("unexpected call on sourceless node")
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}
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