128 lines
5.3 KiB
Bash
Executable File
128 lines
5.3 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Checks the manuals against the code.
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#
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# Documentation goes stale quietly. An instruction added without a table row, or a count
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# in a heading that nobody updated, is wrong in a way nothing notices until somebody
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# trusts it. Everything here is a claim the manuals make that can be settled by looking
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# at the source, so it is settled every time the tests run.
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#
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# Written by Anachronaut
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set -u
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ROOT="$(cd "$(dirname "$0")/.." && pwd)"
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cd "$ROOT" || exit 1
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python3 - <<'PY'
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import re
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import sys
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problems = []
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def read(path):
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return open(path).read()
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pm = read("SplitBit Programming Manual.md")
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am = read("SplitBit Assembler Manual.md")
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asmc = read("Source/Assembler/assembly.c")
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util = read("Source/Assembler/Assm-util.c")
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# ---- Every instruction has a row, and every row is an instruction ----
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#
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# A mnemonic begins with a letter, which is what keeps the offset and size columns of the
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# other tables in these manuals out of it.
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documented = {(int(m.group(1), 16), m.group(2))
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for m in re.finditer(r'^\|\s*([0-9A-F]{2})\s*\|\s*([A-Z][A-Z0-9]*)\s*\|', pm, re.M)}
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implemented = {(int(m.group(1), 16), m.group(2))
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for m in re.finditer(r'\{0x([0-9A-Fa-f]{2}),\s*"([A-Z0-9]+)"\}', asmc)}
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for opcode, name in sorted(implemented - documented):
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problems.append("%s (0x%02X) is implemented and not in the manual" % (name, opcode))
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for opcode, name in sorted(documented - implemented):
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problems.append("%s (0x%02X) is in the manual and not implemented" % (name, opcode))
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# ---- The counts in the group headings ----
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body = asmc[asmc.index("Instruction instruction_set[]"):asmc.index("int num_instructions")]
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actual = {}
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group = None
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for line in body.split("\n"):
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heading = re.match(r'\s*// (.+?) Operations:', line)
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if heading:
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group = heading.group(1)
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actual.setdefault(group, 0)
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if re.search(r'\{0x[0-9A-Fa-f]{2},', line) and group:
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actual[group] += 1
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for m in re.finditer(r'^### (.+?) Operations: (\d+) Instructions?$', pm, re.M):
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name, claimed = m.group(1), int(m.group(2))
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# The manual's headings are wordier than the source's comments, so match on the start.
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match = [v for k, v in actual.items() if name.startswith(k)]
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if not match:
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problems.append("the manual has a group called \"%s\" that the source does not" % name)
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elif match[0] != claimed:
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problems.append("the manual says %s has %d instructions, and it has %d"
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% (name, claimed, match[0]))
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# ---- Every directive the assembler knows is written down ----
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for directive in sorted(set(re.findall(r'"(#[A-Za-z]+)"', util))):
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if directive not in am:
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problems.append("%s is a directive and is not in the Assembler Manual" % directive)
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# ---- Every routine the manual promises exists ----
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for library, names in [("Programs/Libraries/sbfs.asm", re.findall(r'\| (sbfs[A-Za-z]+) \|', pm))]:
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defined = set(re.findall(r'^([a-zA-Z][A-Za-z0-9]*):', read(library), re.M))
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for name in names:
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if name not in defined:
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problems.append("the manual lists %s, which %s does not define" % (name, library))
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# ---- The worked example still assembles to the bytes the manual prints ----
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#
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# The hello world program and the hex dump beside it are two claims about the same thing,
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# and nothing but this keeps them agreeing.
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import os
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import subprocess
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import tempfile
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source = pm.split("### Example Program: Hello World")[1].split("```")[1]
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claimed = pm.split("assembled and dumped as hex:")[1].split("```")[1].split()
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with tempfile.TemporaryDirectory() as work:
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asm = os.path.join(work, "hello.asm")
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binary = os.path.join(work, "hello.bin")
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open(asm, "w").write(source)
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built = subprocess.run(["./Assembler", asm, "-o", binary],
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capture_output=True)
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if built.returncode != 0:
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problems.append("the hello world program in the manual no longer assembles")
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else:
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actual = ["%02x" % b for b in open(binary, "rb").read()]
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if [c.lower() for c in claimed] != actual:
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problems.append("the hex dump in the manual is not what that program assembles to"
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" now: it prints %d bytes and the assembler makes %d"
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% (len(claimed), len(actual)))
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# ---- The Assembler Manual's worked programs still assemble ----
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for heading in ["## An Example SplitBit Assembly Program:",
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"## An Example Using More Than One Data Pointer:",
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"## An Example Using Interrupts:"]:
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if heading not in am:
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problems.append("the Assembler Manual has lost its \"%s\" section" % heading.strip("# :"))
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continue
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example = am.split(heading)[1].split("```")[1]
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with tempfile.TemporaryDirectory() as work:
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asm = os.path.join(work, "example.asm")
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open(asm, "w").write(example)
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built = subprocess.run(["./Assembler", "-I", "Programs/Libraries", asm,
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"-o", os.path.join(work, "example.bin")],
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capture_output=True)
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if built.returncode != 0:
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problems.append("the example under \"%s\" no longer assembles"
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% heading.strip("# :"))
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if problems:
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print("The manuals and the code disagree:")
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for p in problems:
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print(" " + p)
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sys.exit(1)
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print("The manuals agree with the code.")
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PY
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