class

Hace::PatternRule

Inherits YAML::Serializable::Strict < YAML::Serializable < Reference < Object

A template rule that synthesizes concrete tasks for dependencies not covered by explicit tasks, mirroring make's pattern rules ("%.o: %.c"). Patterns live in the Hacefile under a top-level patterns: key and are expanded at load time, before the task graph is built.

Constructors

new(ctx : YAML::ParseContext, node : YAML::Nodes::Node)

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new(commands : String, outputs : Array(String) = [] of String, dependencies : Array(String) = [] of String, shell : String | Nil = nil)

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new(*, __context_for_yaml_serializable ctx : YAML::ParseContext, __node_for_yaml_serializable node : YAML::Nodes::Node)

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Instance methods

commands

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commands=(commands : String)

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dependencies

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dependencies=(dependencies : Array(String))

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dependencies_for(stem : String) : Array(String)

Dependencies with '%' placeholders replaced by stem. Dependencies without a placeholder pass through unchanged.

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match_stem(name : String) : String | Nil

The stem with which name matches this pattern's output, or nil when there is no match. Empty stems are rejected so "%.o" does not match a file literally named ".o".

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outputs

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outputs=(outputs : Array(String))

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shell

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shell=(shell : String | Nil)

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validate!(index : Int32) : Nil

Structural checks that YAML parsing cannot express. Raises with a message identifying the offending pattern.

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