processing.cpp/scripts/stress-test.py at v0.2.3 · processing-cpp/processing.cpp

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#!/usr/bin/env python3

"""

Runs CppMode's full parser/pipeline stress-test suite.

Works no matter where you put this file (project root, scripts/,

wherever) -- it finds the real CppMode checkout by walking up looking

for mode.properties, rather than assuming its own location is the root.

Before running the suite, it writes a small set of known-good fixed/new

files into place (the corrected Scrollbar.pde example, and 5 new-user

edge-case fixtures: blank template, only-setup, only-draw, empty file,

comment-only file). This means a single plain run does everything --

nothing else needs to be created or copy-pasted by hand. Pass --no-write

to skip this step if you'd rather manage those files yourself.

Then it compiles the standalone tools/cpp-parser/ project and runs it

against every real example sketch under examples/, in four layers:

1. ParserCorpusSweep -- parse-only check (fastest, no g++ needed)

2. RealCorpusStressTest -- full pipeline + g++ against a hand-built,

deliberately narrow Processing API stub.

A non-zero fail count here is EXPECTED and

not a sign of a problem -- see Layer 3.

3. RealHeaderStressTest -- full pipeline + g++ against the REAL

Processing.h/Processing_api.h headers

(needs libglfw3-dev + libglew-dev installed;

auto-skipped with a clear message if not

found, not a hard failure). This is the

layer whose fail count should be at or near

zero.

4. RealHeaderStressTest again, against new-user edge cases (the blank

template, partial sketches) instead of the real example corpus.

Same real-headers requirement as Layer 3.

Usage:

stress-test.py

stress-test.py --quick (skip layers 3/4, no GLFW3/GLEW needed)

stress-test.py --no-write (skip writing the known-good fixtures)

"""

import os

import shutil

import subprocess

import sys

# ──────────────────────────────────────────────────────────────────────

# Root detection: walk up from this script's own location looking for

# mode.properties (CppMode's real top-level marker file), rather than

# assuming this script's own directory IS the project root. Works

# whether this file lives at the project root or in scripts/.

def find_cppmode_root():

here = os.path.dirname(os.path.abspath(__file__))

candidate = here

for _ in range(5):

if os.path.isfile(os.path.join(candidate, "mode.properties")):

return candidate

parent = os.path.dirname(candidate)

if parent == candidate:

break

candidate = parent

print(f"ERROR: could not find CppMode's mode.properties by walking up from {here}.")

print("This script needs to live somewhere inside a real CppMode checkout")

print("(either at the project root, or in scripts/, examples/, tools/, etc.)")

sys.exit(1)

CPPMODE_DIR = find_cppmode_root()

CPP_PARSER_DIR = os.path.join(CPPMODE_DIR, "tools", "cpp-parser")

EXAMPLES_DIR = os.path.join(CPPMODE_DIR, "examples")

SRC_DIR = os.path.join(CPPMODE_DIR, "src")

OUT_DIR = os.path.join(CPP_PARSER_DIR, "out")

CORPUS_DIR = "/tmp/cppmode_stress_corpus"

# Known-good fixed/new files, written into place by default. Pass

# --no-write to skip this step.

# NOTE: src/java/Parser.java and src/java/CodeGen.java are NOT written

# here -- they're large, hand-maintained files delivered separately.

# If Layer 3 shows Pie_Chart.pde / Game_Of_Life.pde / Characters_Strings.pde

# / Scrollbar.pde failing (or CRASHing), those two files are out of date;

# this script can't fix that for you, only flag it.

FILES_TO_WRITE = {

"examples/Topics/gui/Scrollbar/Scrollbar.pde": '''/**

* Scrollbar.

* Move the scrollbars left and right to change the positions of the images.

//True if a mouse button was pressed while no other button was.

boolean firstMousePress = false;

HScrollbar* hs1, * hs2; // Two scrollbars

PImage* img1 = nullptr;

PImage* img2 = nullptr; // Two images to load

void setup() {

size(640, 360);

noStroke();

hs1 = new HScrollbar(0, height/2-8, width, 16, 16);

hs2 = new HScrollbar(0, height/2+8, width, 16, 16);

// Load images

img1 = loadImage("seedTop.jpg");

img2 = loadImage("seedBottom.jpg");

}

void draw() {

background(255);

// Get the position of the img1 scrollbar

// and convert to a value to display the img1 image

float img1Pos = hs1->getPos()-width/2;

fill(255);

image(img1, width/2-img1->width/2 + img1Pos*1.5, 0);

// Get the position of the img2 scrollbar

// and convert to a value to display the img2 image

float img2Pos = hs2->getPos()-width/2;

fill(255);

image(img2, width/2-img2->width/2 + img2Pos*1.5, height/2);

hs1->update();

hs2->update();

hs1->display();

hs2->display();

stroke(0);

line(0, height/2, width, height/2);

//After it has been used in the sketch, set it back to false

if (firstMousePress) {

firstMousePress = false;

}

void mousePressed() {

if (!firstMousePress) {

firstMousePress = true;

}

class HScrollbar {

int swidth, sheight; // width and height of bar

float xpos, ypos; // x and y position of bar

float spos, newspos; // x position of slider

float sposMin, sposMax; // max and min values of slider

int loose; // how loose/heavy

boolean over; // is the mouse over the slider?

boolean locked;

float ratio;

HScrollbar (float xp, float yp, int sw, int sh, int l) {

swidth = sw;

sheight = sh;

int widthtoheight = sw - sh;

ratio = (float)sw / (float)widthtoheight;

xpos = xp;

ypos = yp-sheight/2;

spos = xpos + swidth/2 - sheight/2;

newspos = spos;

sposMin = xpos;

sposMax = xpos + swidth - sheight;

loose = l;

}

void update() {

if (overEvent()) {

over = true;

} else {

over = false;

}

if (firstMousePress && over) {

locked = true;

}

if (!_mousePressed) {

locked = false;

}

if (locked) {

newspos = constrain(mouseX-sheight/2, sposMin, sposMax);

}

if (abs(newspos - spos) > 1) {

spos = spos + (newspos-spos)/loose;

}

float constrain(float val, float minv, float maxv) {

return min(max(val, minv), maxv);

}

boolean overEvent() {

if (mouseX > xpos && mouseX < xpos+swidth &&

mouseY > ypos && mouseY < ypos+sheight) {

return true;

} else {

return false;

}

void display() {

noStroke();

fill(204);

rect(xpos, ypos, swidth, sheight);

if (over || locked) {

fill(0, 0, 0);

} else {

fill(102, 102, 102);

}

rect(spos, ypos, sheight, sheight);

}

float getPos() {

// Convert spos to be values between

// 0 and the total width of the scrollbar

return spos * ratio;

}

''',

"tools/cpp-parser/fixtures/new-user-edge-cases/blank_template.pde": '''// Full C++ STL is available without any #include.

// See https://processing-cpp.github.io/libraries

void setup() {

// put your setup code here, to run once:

}

void draw() {

// put your main code here, to run repeatedly:

}

''',

"tools/cpp-parser/fixtures/new-user-edge-cases/only_setup.pde": '''void setup() {

size(400, 400);

}

''',

"tools/cpp-parser/fixtures/new-user-edge-cases/only_draw.pde": '''void draw() {

background(0);

}

''',

"tools/cpp-parser/fixtures/new-user-edge-cases/completely_empty.pde": "",

"tools/cpp-parser/fixtures/new-user-edge-cases/just_a_comment.pde": "// nothing here yet\n",

}

def write_known_good_files():

print("=" * 70)

print("STEP 0: writing known-good fixed/new files into place")

print("=" * 70)

for rel_path, content in FILES_TO_WRITE.items():

full_path = os.path.join(CPPMODE_DIR, rel_path)

os.makedirs(os.path.dirname(full_path), exist_ok=True)

with open(full_path, "w") as f:

f.write(content)

print(f" wrote {rel_path} ({len(content)} bytes)")

print()

# Compile + run the 4-layer suite.

def run(cmd, cwd=None, check=True):

print(f"$ {' '.join(cmd)}")

result = subprocess.run(cmd, cwd=cwd)

if check and result.returncode != 0:

print(f"FAILED (exit code {result.returncode}): {' '.join(cmd)}")

sys.exit(result.returncode)

return result.returncode

def find_java_sources(*subdirs):

files = []

for sub in subdirs:

base = os.path.join(CPP_PARSER_DIR, sub)

for root, _, names in os.walk(base):

for name in names:

if name.endswith(".java"):

files.append(os.path.join(root, name))

return files

def compile_parser_project():

if not os.path.isdir(os.path.join(CPP_PARSER_DIR, "src", "main")):

print(f"ERROR: {CPP_PARSER_DIR}/src/main not found.")

print("Is tools/cpp-parser/ actually present and complete?")

sys.exit(1)

sources = find_java_sources("src/main", "src/test")

if not sources:

print(f"ERROR: no .java files found under {CPP_PARSER_DIR}/src/")

sys.exit(1)

print(f"Compiling {len(sources)} Java source files...")

os.makedirs(OUT_DIR, exist_ok=True)

run(["javac", "-d", OUT_DIR] + sources)

def gather_real_corpus():

if os.path.isdir(CORPUS_DIR):

shutil.rmtree(CORPUS_DIR)

os.makedirs(CORPUS_DIR)

if not os.path.isdir(EXAMPLES_DIR):

print(f"ERROR: examples directory not found at {EXAMPLES_DIR}")

sys.exit(1)

count = 0

for root, _, names in os.walk(EXAMPLES_DIR):

for name in names:

if name.endswith(".pde"):

shutil.copy(os.path.join(root, name), CORPUS_DIR)

count += 1

if count == 0:

print(f"ERROR: no .pde files found under {EXAMPLES_DIR}")

sys.exit(1)

print(f"Gathered {count} real example sketches into {CORPUS_DIR}")

return count

def has_real_headers():

"""True if libglfw3-dev/libglew-dev are installed -- checked via

pkg-config first, falling back to a direct header existence check."""

for pkg in ("glfw3", "glew"):

result = subprocess.run(["pkg-config", "--exists", pkg],

stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)

if result.returncode != 0:

candidates = {

"glfw3": ["/usr/include/GLFW/glfw3.h", "/usr/local/include/GLFW/glfw3.h"],

"glew": ["/usr/include/GL/glew.h", "/usr/local/include/GL/glew.h"],

}

if not any(os.path.exists(p) for p in candidates[pkg]):

return False

return True

def run_parser_sweep_layer():

print()

print("=" * 70)

print("LAYER 1: ParserCorpusSweep (parse-only, no g++ needed)")

print("=" * 70)

run(["java", "-cp", OUT_DIR, "cppmode.parser.ParserCorpusSweep", CORPUS_DIR],

cwd=CPP_PARSER_DIR, check=False)

def run_stub_pipeline_layer(quick):

print()

print("=" * 70)

print("LAYER 2: RealCorpusStressTest (full pipeline + g++, narrow stub)")

print("=" * 70)

if quick:

print("Skipped (--quick).")

return

if has_real_headers():

print("Skipped: real headers (libglfw3-dev/libglew-dev) are available,")

print("so Layer 3 already gives the real, trustworthy signal -- this")

print("layer's deliberately tiny, hand-written API stub only ever")

print("covers a small slice of the real Processing API, so its g++")

print("failures (RGB, PI, PShape, etc. \"not declared\") are EXPECTED")

print("noise, not real problems, and just distract from Layer 3's")

print("answer. Pass --force-layer-2 to run it anyway.")

if "--force-layer-2" not in sys.argv:

return

run(["java", "-cp", OUT_DIR, "cppmode.parser.RealCorpusStressTest", CORPUS_DIR],

cwd=CPP_PARSER_DIR, check=False)

def run_real_header_layer(quick):

print()

print("=" * 70)

print("LAYER 3: RealHeaderStressTest (full pipeline + g++, REAL Processing.h)")

print("=" * 70)

if quick:

print("Skipped (--quick).")

return

if not has_real_headers():

print("Skipped: libglfw3-dev and/or libglew-dev not found.")

print("Install them to run this layer, e.g. on Debian/Ubuntu:")

print(" sudo apt-get install libglfw3-dev libglew-dev")

print("On Arch:")

print(" sudo pacman -S glfw glew")

return

fixtures_stub = os.path.join(CPP_PARSER_DIR, "fixtures", "extracted_real_api_stub.h")

if not os.path.exists(fixtures_stub):

print(f"Skipped: {fixtures_stub} not found.")

print("This file is expected alongside the other tools/cpp-parser/fixtures/.")

return

# cwd=CPP_PARSER_DIR is required: RealCorpusStressTest/RealHeaderStressTest

# both read "fixtures/extracted_real_api_stub.h" as a path relative to

# the JVM's working directory, not relative to this script's location.

run(["java", "-cp", OUT_DIR, "cppmode.parser.RealHeaderStressTest", CORPUS_DIR, SRC_DIR],

cwd=CPP_PARSER_DIR, check=False)

def run_new_user_edge_cases_layer(quick):

print()

print("=" * 70)

print("LAYER 4: new-user edge cases (blank template, partial sketches)")

print("=" * 70)

edge_cases_dir = os.path.join(CPP_PARSER_DIR, "fixtures", "new-user-edge-cases")

if not os.path.isdir(edge_cases_dir):

print(f"Skipped: {edge_cases_dir} not found.")

return

if quick:

print("Skipped (--quick) -- this layer also needs real headers.")

return

if not has_real_headers():

print("Skipped: libglfw3-dev and/or libglew-dev not found (same requirement as Layer 3).")

return

run(["java", "-cp", OUT_DIR, "cppmode.parser.RealHeaderStressTest", edge_cases_dir, SRC_DIR],

cwd=CPP_PARSER_DIR, check=False)

def run_stress_cases_layer():

"""

Layer 5: the ever-growing adversarial stress-cases/ folder.

Pure parser + codegen, no g++ and no real headers needed, so this

always runs regardless of --quick or GLFW3/GLEW availability -- it's

cheap and should never be skipped.

Each .cpp file under tools/cpp-parser/stress-cases/ declares its own

expectation via a "// EXPECT: PASS" or "// EXPECT: FAIL" header

comment. PASS files that fail are real regressions (nonzero exit).

FAIL files that start passing are reported but not treated as

failures -- just a sign that file's header may be worth updating.

To add a new adversarial case: drop a new .cpp file in

tools/cpp-parser/stress-cases/ with an EXPECT header and a short

explanation of what it's probing. No code changes needed -- it's

picked up automatically next run.

"""

print()

print("=" * 70)

print("LAYER 5: stress-cases (ever-growing adversarial parser fixtures)")

print("=" * 70)

stress_cases_dir = os.path.join(CPP_PARSER_DIR, "stress-cases")

if not os.path.isdir(stress_cases_dir):

print(f"Skipped: {stress_cases_dir} not found.")

return

run(["java", "-cp", OUT_DIR, "cppmode.parser.StressCasesRunner", stress_cases_dir],

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