Function and constructor middleware diagrams

Function and constructor middleware

Start with how the application begins, then follow data between its folders. Open an operation to see its decisions, calls, failures and cleanup. Its explanation supplies the exact contract and linked dependencies.

This view includes 4 application source files. Package and interface boundaries show checked contracts; their runtime implementations are not expanded. The views describe the checked program, not desired requirements or a recorded execution.

Where execution begins

Providers

Console is provided by SystemConsole. The same instance is shared. Logger is provided by ConsoleLogger. The same instance is shared.

Startup

It prints describe with label "value" and x 6 using injected Logger for logger and Console for console. If this work raises ValidationError, it prints "rejected". It sets greeter to a Greeter with name "AugScript" using injected Logger for _logger. It prints greeter.greet using injected Logger for logger and Console for console. source

It tries to call describe with x -1 and label "invalid" using injected Logger for logger and Console for console. If this work raises ValidationError, it prints "rejected". source

Data flow

100%

Mermaid source

flowchart TD
    n0["app"]
    n1["interceptors"]
    n2["logging"]
    n3["Startup"]
    n1 -->|"Logger.log(message)"| n2
    n3 -->|"Greeter(name) / Greeter.greet + 1 more → Greeter / string"| n0

Package boundaries

app package calls

100%

Mermaid source

flowchart LR
    n0["August libraries"]
    n1["app"]
    n1 -->|"Console.write(value)"| n0

logging package calls

100%

Mermaid source

flowchart LR
    n0["August libraries"]
    n1["logging"]
    n1 -->|"Console.write(value)"| n0

Follow the data

Each row opens the complete operations and call sites behind one pair of logical units. A grouped arrow records calls between those units; connected arrows need not belong to the same execution path.

From	To	Operations	Read
app	August libraries	1	Inputs, results and call sites
interceptors	logging	1	Inputs, results and call sites
logging	August libraries	1	Inputs, results and call sites
Startup	app	3	Inputs, results and call sites

Data crossing these boundaries (6 contracts)

app → August libraries

1 operation, 1 site

Console.write · interface dispatch

Inputs: value: int. Result: void.

Caller or entry	Evidence
describe	Call site · Caller explanation

interceptors → logging

1 operation, 2 sites

Logger.log · interface dispatch

Inputs: message: string. Result: void.

Caller or entry	Evidence
Audit.around	Call site · Caller explanation
Audit.around	Call site · Caller explanation

logging → August libraries

1 operation, 1 site

Console.write · interface dispatch

Inputs: value: string. Result: void.

Caller or entry	Evidence
ConsoleLogger.log	Call site · Caller explanation

Startup → app

3 operations, 4 sites

Greeter

Inputs: name: string. Result: Greeter.

Caller or entry	Evidence
Startup	Call site · Caller explanation

Greeter.greet

No caller-supplied inputs. Result: string.

Caller or entry	Evidence
Startup	Call site · Caller explanation

describe

Inputs: x: int, label: string. Result: string.

Caller or entry	Evidence
Startup	Call site · Caller explanation
Startup	Call site · Caller explanation

Open a module

Module	Read
app.aug	Flow and sequences · Explanation
interceptors.aug	Flow and sequences · Explanation
logging.aug	Flow and sequences · Explanation
main.aug	Flow and sequences · Explanation

These are static call boundaries, not a request trace. Interface implementations and foreign internals stop at their checked contracts. Dotted arrows defer a callback or browser action. Imports alone do not imply a call.