tools/perf/util/demangle-java.c

Source file repositories/reference/linux-study-clean/tools/perf/util/demangle-java.c

File Facts

System
Linux kernel
Corpus path
tools/perf/util/demangle-java.c
Extension
.c
Size
4291 bytes
Lines
204
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: implementation source
Status
source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

switch (*q) {
		case 'L':
			if (mode == MODE_PREFIX || mode == MODE_TYPE) {
				if (mode == MODE_TYPE) {
					if (narg)
						rlen += scnprintf(buf + rlen, maxlen - rlen, ", ");
					narg++;
				}
				if (mode == MODE_PREFIX)
					mode = MODE_CLASS;
				else
					mode = MODE_CTYPE;
			} else
				buf[rlen++] = *q;
			break;
		case 'B':
		case 'C':
		case 'D':
		case 'F':
		case 'I':
		case 'J':
		case 'S':
		case 'Z':
			if (mode == MODE_TYPE) {
				if (narg)
					rlen += scnprintf(buf + rlen, maxlen - rlen, ", ");
				rlen += scnprintf(buf + rlen, maxlen - rlen, "%s", base_types[*q - 'A']);
				while (array--)
					rlen += scnprintf(buf + rlen, maxlen - rlen, "[]");
				array = 0;
				narg++;
			} else
				buf[rlen++] = *q;
			break;
		case 'V':
			if (mode == MODE_TYPE) {
				rlen += scnprintf(buf + rlen, maxlen - rlen, "void");
				while (array--)
					rlen += scnprintf(buf + rlen, maxlen - rlen, "[]");
				array = 0;
			} else
				buf[rlen++] = *q;
			break;
		case '[':
			if (mode != MODE_TYPE)
				goto error;
			array++;
			break;
		case '(':
			if (mode != MODE_FUNC)
				goto error;
			buf[rlen++] = *q;
			mode = MODE_TYPE;
			break;
		case ')':
			if (mode != MODE_TYPE)
				goto error;
			buf[rlen++] = *q;
			narg = 0;
			break;
		case ';':
			if (mode != MODE_CLASS && mode != MODE_CTYPE)
				goto error;
			/* safe because at least one other char to process */
			if (isalpha(*(q + 1)) && mode == MODE_CLASS)
				rlen += scnprintf(buf + rlen, maxlen - rlen, ".");
			if (mode == MODE_CLASS)
				mode = MODE_FUNC;
			else if (mode == MODE_CTYPE)
				mode = MODE_TYPE;
			break;
		case '/':
			if (mode != MODE_CLASS && mode != MODE_CTYPE)
				goto error;
			rlen += scnprintf(buf + rlen, maxlen - rlen, ".");
			break;
		default :
			buf[rlen++] = *q;
		}
	}
	buf[rlen] = '\0';
	return buf;
error:
	return NULL;
}

/*
 * Demangle Java function signature (openJDK, not GCJ)
 * input:
 * 	str: string to parse. String is not modified

Annotation

Implementation Notes