107 lines
3.0 KiB
Python
107 lines
3.0 KiB
Python
import triplayacc as yacc
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import triplalex as lex
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import syntax
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from pathlib import Path
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from graphviz import Source
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import matplotlib.pyplot as plt
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import matplotlib.image as mpimg
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import os
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import matplotlib
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matplotlib.use("TkAgg")
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def render_ast_from_string(dot_string: str):
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# Set DPI for PNG
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os.environ["GV_FILE_DPI"] = "300"
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src = Source(dot_string, format="png", engine="dot")
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png_path = src.render(cleanup=True)
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img = mpimg.imread(png_path)
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fig = plt.figure(figsize=(12, 12))
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fig.canvas.manager.window.wm_title("TRIPLA AST Viewer")
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plt.imshow(img)
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plt.axis("off")
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plt.show()
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def pretty_print(node, indent=0):
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prefix = " " * indent
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print(f"{prefix}{type(node).__name__}:")
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for key, value in node.__dict__.items():
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if isinstance(value, syntax.EXPRESSION):
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pretty_print(value, indent + 4)
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elif isinstance(value, list):
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print(f"{prefix} {key}: [")
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for element in value:
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if isinstance(element, syntax.EXPRESSION):
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pretty_print(element, indent + 4)
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else:
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print(" " * (indent + 4) + str(element))
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print(f"{prefix} ]")
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else:
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print(f"{prefix} {key}: {value}")
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def prompt_choice(prompt: str, options: list) -> int:
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print(prompt)
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for i, opt in enumerate(options, 1):
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print(f" {i}. {opt}")
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while True:
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try:
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s = input(f"Enter choice (1-{len(options)}): ").strip()
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idx = int(s) - 1
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if 0 <= idx < len(options):
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return idx
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except Exception:
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pass
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print(f"Invalid. Enter a number between 1-{len(options)}.")
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def prompt_yesno(question: str, default="y"):
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s = input(f"{question} (y/n) [{default}]: ").strip().lower()
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if not s:
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s = default
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return s.startswith("y")
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def search_programs():
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base = Path(__file__).parent / "triplaprograms"
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if not base.exists():
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return []
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return sorted([f for f in base.glob("*.tripla")])
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if __name__ == "__main__":
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print("\nTRIPLA Parser Tool")
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while True:
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choice = prompt_choice("\nSelect action:", ["Parse .tripla", "Exit"])
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if choice == 1:
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print("\nBye Bye.")
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break
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programs = search_programs()
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if not programs:
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print("\nNo .tripla files found.")
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continue
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idx = prompt_choice("\nSelect program to parse:", [p.name for p in programs])
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path = programs[idx]
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source = path.read_text()
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ast = yacc.parser.parse(source)
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# Pretty print
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if prompt_yesno("\nPretty-print AST?"):
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print("")
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pretty_print(ast)
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# Show AST graph
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if prompt_yesno("Display AST diagram?"):
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dot_str = ast.to_dot()
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render_ast_from_string(dot_str)
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print("Rendered AST diagram.") |