Class: Highway::Compiler::Analyze::Analyzer

Inherits:
Object
  • Object
show all
Defined in:
lib/highway/compiler/analyze/analyzer.rb

Overview

This class is responsible for semantic analysis of a parse tree. This is the second phase of the compiler.

Instance Method Summary collapse

Constructor Details

#initialize(registry:, interface:) ⇒ Analyzer

Initialize an instance.

Parameters:



23
24
25
26
 
# File 'lib/highway/compiler/analyze/analyzer.rb', line 23

def initialize(registry:, interface:)
  @registry = registry
  @interface = interface
end

Instance Method Details

#analyze(parse_tree:) ⇒ Highway::Compiler::Analyze::Tree::Root

Analyze the parse tree.

The semantic analyzer validates the parse tree in terms of content, performs segmentation of values and resolves steps against the registry.

The semantic analyzer produces a semantic tree which is then used by build phase to generate a manifest.

Parameters:

Returns:



40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
 
# File 'lib/highway/compiler/analyze/analyzer.rb', line 40

def analyze(parse_tree:)

  sema_tree = Analyze::Tree::Root.new()

  sema_tree.add_stage(index: 0, name: "bootstrap", policy: :normal, )
  sema_tree.add_stage(index: 1, name: "test", policy: :normal)
  sema_tree.add_stage(index: 2, name: "deploy", policy: :normal)
  sema_tree.add_stage(index: 3, name: "report", policy: :always)

  sema_tree.default_preset = "default"

  validate_preset_names(parse_tree: parse_tree)
  validate_variable_names(parse_tree: parse_tree)
  validate_variable_values(parse_tree: parse_tree)
  validate_step_names(parse_tree: parse_tree)
  validate_step_parameter_values(parse_tree: parse_tree)

  resolve_variables(parse_tree: parse_tree, sema_tree: sema_tree)
  resolve_steps(parse_tree: parse_tree, sema_tree: sema_tree)

  validate_variable_references(sema_tree: sema_tree)

  sema_tree

end