harn-stdlib 0.8.21

Embedded Harn standard library source catalog
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
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
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188

/** render_workflow_prompt_asset. */
pub fn render_workflow_prompt_asset(path, bindings = nil) {
  return render_prompt("std/workflow/prompts/" + path, bindings ?? {})
}

/** workflow_stage_prompt. */
pub fn workflow_stage_prompt(bindings) {
  return render_workflow_prompt_asset("stage.harn.prompt", bindings)
}

/** workflow_verification_context_intro. */
pub fn workflow_verification_context_intro() {
  return render_workflow_prompt_asset("verification_context_intro.harn.prompt", {})
}

fn __workflow_escape_prompt_text(text) {
  return to_string(text ?? "").replace("&", "&amp;").replace("<", "&lt;").replace(">", "&gt;")
}

fn __workflow_artifact_title(artifact) {
  let title = artifact?.title
  if title != nil {
    return title
  }
  return to_string(artifact?.kind ?? "") + " " + to_string(artifact?.id ?? "")
}

fn __workflow_artifact_body(artifact) {
  let text = artifact?.text
  if text != nil {
    return text
  }
  let data = artifact?.data
  if data != nil {
    return json_stringify(data)
  }
  return ""
}

fn __workflow_render_artifact_xml(artifact) {
  let title = __workflow_artifact_title(artifact)
  let source = artifact?.source ?? "unknown"
  let freshness = artifact?.freshness ?? "normal"
  return "<artifact>\n"
    + "<title>"
    + __workflow_escape_prompt_text(title)
    + "</title>\n"
    + "<kind>"
    + __workflow_escape_prompt_text(artifact?.kind ?? "")
    + "</kind>\n"
    + "<source>"
    + __workflow_escape_prompt_text(source)
    + "</source>\n"
    + "<freshness>"
    + __workflow_escape_prompt_text(freshness)
    + "</freshness>\n"
    + "<priority>"
    + to_string(artifact?.priority ?? 0)
    + "</priority>\n"
    + "<body>\n"
    + __workflow_artifact_body(artifact)
    + "\n</body>\n"
    + "</artifact>"
}

fn __workflow_render_artifact_json(artifact) {
  return json_stringify(
    {
      id: artifact?.id,
      kind: artifact?.kind,
      title: __workflow_artifact_title(artifact),
      source: artifact?.source,
      freshness: artifact?.freshness,
      priority: artifact?.priority,
      text: __workflow_artifact_body(artifact),
    },
  )
}

/** workflow_render_artifacts_context. */
pub fn workflow_render_artifacts_context(artifacts = nil, policy = nil) {
  let render = policy?.render
  var parts = []
  for artifact in artifacts ?? [] {
    if render == "json" {
      parts = parts.push(__workflow_render_artifact_json(artifact))
    } else {
      parts = parts.push(__workflow_render_artifact_xml(artifact))
    }
  }
  return join(parts, "\n\n")
}

fn __workflow_push_optional_field(out, name, value) {
  if value == nil {
    return out
  }
  return out + "<" + name + ">" + __workflow_escape_prompt_text(value) + "</" + name + ">\n"
}

fn __workflow_push_int_field(out, name, value) {
  if value == nil {
    return out
  }
  return out + "<" + name + ">" + to_string(value) + "</" + name + ">\n"
}

fn __workflow_push_string_list(out, name, values) {
  if len(values ?? []) == 0 {
    return out
  }
  var result = out + "<" + name + ">\n"
  for value in values {
    result = result + "- " + __workflow_escape_prompt_text(value) + "\n"
  }
  return result + "</" + name + ">\n"
}

fn __workflow_push_checks(out, checks) {
  if len(checks ?? []) == 0 {
    return out
  }
  var result = out + "<checks>\n"
  for check in checks {
    result = result + "- " + __workflow_escape_prompt_text(check?.kind ?? "")
      + ": "
      + __workflow_escape_prompt_text(check?.value ?? "")
    if check?.note != nil {
      result = result + " (" + __workflow_escape_prompt_text(check.note) + ")"
    }
    result = result + "\n"
  }
  return result + "</checks>\n"
}

fn __workflow_render_contract(contract) {
  var out = "\n<contract>\n"
  out = __workflow_push_optional_field(out, "source_node", contract?.source_node)
  out = __workflow_push_optional_field(out, "summary", contract?.summary)
  out = __workflow_push_optional_field(out, "command", contract?.command)
  out = __workflow_push_int_field(out, "expect_status", contract?.expect_status)
  out = __workflow_push_optional_field(out, "assert_text", contract?.assert_text)
  out = __workflow_push_optional_field(out, "expect_text", contract?.expect_text)
  out = __workflow_push_string_list(out, "required_identifiers", contract?.required_identifiers ?? [])
  out = __workflow_push_string_list(out, "required_paths", contract?.required_paths ?? [])
  out = __workflow_push_string_list(out, "required_text", contract?.required_text ?? [])
  out = __workflow_push_checks(out, contract?.checks ?? [])
  out = __workflow_push_string_list(out, "notes", contract?.notes ?? [])
  return out + "</contract>"
}

/** workflow_render_verification_context. */
pub fn workflow_render_verification_context(contracts = nil) {
  if len(contracts ?? []) == 0 {
    return ""
  }
  var out = workflow_verification_context_intro() + "\n"
  for contract in contracts {
    out = out + __workflow_render_contract(contract)
  }
  return out
}

fn __workflow_stage_label(label) {
  let trimmed = trim(label ?? "")
  if trimmed == "" {
    return "Task"
  }
  return trimmed
}

/** workflow_prepare_stage_prompt. */
pub fn workflow_prepare_stage_prompt(config = nil) {
  let opts = config ?? {}
  let rendered_context = opts?.rendered_context
    ?? workflow_render_artifacts_context(opts?.artifacts ?? [], opts?.context_policy ?? {})
  let rendered_verification = opts?.rendered_verification
    ?? workflow_render_verification_context(opts?.verification_contracts ?? [])
  let prompt = workflow_stage_prompt(
    {
      label: __workflow_escape_prompt_text(__workflow_stage_label(opts?.task_label)),
      instructions: trim(opts?.task ?? ""),
      verification: trim(rendered_verification),
      context: trim(rendered_context),
    },
  )
  return {prompt: prompt, rendered_context: rendered_context, rendered_verification: rendered_verification}
}